CN114518311B - Visual simulation device capable of controlling coarse single-crack seepage and application method thereof - Google Patents
Visual simulation device capable of controlling coarse single-crack seepage and application method thereof Download PDFInfo
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- CN114518311B CN114518311B CN202210154686.4A CN202210154686A CN114518311B CN 114518311 B CN114518311 B CN 114518311B CN 202210154686 A CN202210154686 A CN 202210154686A CN 114518311 B CN114518311 B CN 114518311B
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- 238000004088 simulation Methods 0.000 title claims abstract description 158
- 230000000007 visual effect Effects 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 86
- 239000011435 rock Substances 0.000 claims abstract description 22
- 238000003756 stirring Methods 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000011084 recovery Methods 0.000 claims abstract description 16
- 239000002699 waste material Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 42
- 239000000463 material Substances 0.000 claims description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000002474 experimental method Methods 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 12
- 238000005286 illumination Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 238000010586 diagram Methods 0.000 claims description 11
- 210000001503 joint Anatomy 0.000 claims description 11
- 238000012360 testing method Methods 0.000 claims description 11
- 238000011049 filling Methods 0.000 claims description 9
- 238000012546 transfer Methods 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 230000035515 penetration Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 11
- 238000011010 flushing procedure Methods 0.000 description 11
- 230000001276 controlling effect Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000005476 size effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
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Abstract
The invention relates to a visual controllable coarse single-crack seepage simulation device and a use method thereof, wherein the visual controllable coarse single-crack seepage simulation device comprises a doping stirring unit, a single-crack simulation unit and a waste liquid recovery unit, the single-crack simulation unit comprises an expansion conversion interface and a simulation box, at least four single-crack movable plates capable of adjusting inclination angles are arranged in the simulation box, the simulation box comprises front and rear transparent plates, at least three longitudinal guide rails for vertically sliding corresponding single-crack movable plates in the simulation box are correspondingly arranged on the inner side surfaces of the front and rear transparent plates, and sliding handles are arranged at the connection positions of the longitudinal guide rails and the single-crack movable plates; the at least four single-slit movable plates are arranged in the simulation box in an upper-lower two-group mode, a space surrounded by the upper-lower two-group single-slit movable plates and the front transparent plate and the rear transparent plate is a sealed cavity, and an inlet and an outlet of the sealed cavity are the inlet and the outlet of the simulation box. The method can simulate the influence of the penetration condition among rock cracks and the opening roughness on crack seepage under different environments of different types.
Description
Technical Field
The invention relates to the technical field of rock seepage, in particular to a visual controllable coarse single-crack seepage simulation device and an experimental method thereof.
Background
For microscopic studies of fractures, the water flow characteristics in bedrock fractures of simulated experimental studies of single fractures are related to many engineering practices, such as underground engineering geotechnical applications, hydropower engineering, petroleum reservoir development, mining and geothermal energy extraction and liquid waste treatment, single fractures being the basic unit of bedrock fractures, including complex fractures, three-dimensional fractures and fracture networks. Fracture surface roughness is subject to self-affine distribution, typically reducing a single fracture to a pair of smooth parallel plates, typically characterized by cubic law, that characterize water flow in the fracture medium, and models of smooth parallel plates appear to be overly simplified due to neglecting the effects of surface roughness, with some drawbacks based on cubic law of smooth parallel plates, such as overestimation of velocity and flow. In a single crack, when water flows through the coarse unit, the phenomena of backflow, streamline separation and original streamline path reattachment occur, so that the water flow resistance is increased. The included angle between the initial tangential direction and the streamline direction of the roughness unit can change the influence degree on the flow movement, and the larger the included angle is, the more severe the turbulence is. As the roughness unit density increases, the impact on the water flow increases and turbulence tends to be pronounced.
In order to facilitate analysis and research on microscopic single cracks in the rock, the rock cracks with different types and different openings are analyzed, and therefore the simulation device for visual controllable rough single crack seepage and the experimental method thereof are provided.
Disclosure of Invention
The invention aims to provide a visual simulation device for controllable rough single-fracture seepage and an experimental method thereof, so as to conveniently study various problems in rock fracture.
The invention aims at realizing the following technical scheme:
the utility model provides a visual controllable coarse single crack seepage flow's analogue means, includes spike mixing unit and single crack analogue unit, waste liquid recovery unit, and the three connects gradually, its characterized in that: the single-crack simulation unit comprises an expansion conversion interface (11) and a simulation box (15), wherein at least four single-crack movable plates (1504) capable of adjusting the inclination angle are arranged in the simulation box (15), the simulation box (15) comprises a front transparent plate and a rear transparent plate, at least three longitudinal guide rails (1502) for enabling the corresponding single-crack movable plates (1504) in the simulation box to slide up and down are correspondingly arranged on the inner side surfaces of the front transparent plate and the rear transparent plate, sliding handles (1503) are arranged at the connection positions of the longitudinal guide rails (1502) and the single-crack movable plates, and the sliding handles are positioned on the outer sides of the transparent plates and are used for adjusting the heights of the single-crack movable plates in the vertical direction; at least four single-slit movable plates are arranged in the simulation box in an upper-lower two-group mode, a space surrounded by the upper-lower two-group single-slit movable plates and the front transparent plate and the rear transparent plate is a sealed cavity, an inlet and an outlet of the sealed cavity are simulation box inlets and outlets, and the simulation box inlets and outlets are respectively connected with an expansion conversion interface (11) which can adapt to the opening change of the inlet and outlet.
The array type multiple fitting spiral interfaces 15043 are arranged on each single-slit movable plate surface and used for arranging spiral equivalent rough fittings 1506, sealing strips 15048 are arranged at the contact edges of each single-slit movable plate surface 1504 and the transparent plate, extension surfaces 15045 extending to one side are arranged on one edge of the single-slit movable plate surfaces perpendicular to the transparent plate, multiple movable plate surface bolt interfaces 15046 are uniformly arranged on the extension surfaces, and sealing connection is carried out between two adjacent single-slit movable plate surfaces in a group through a single-slit movable plate surface intermediate connection joint, so that relative rotation and sealing connection can be carried out on the two single-slit movable plate surfaces in the group.
The screw equivalent rough fitting 1506 is provided with bolts at the bottom, and rough units with different shapes and sizes are arranged at the top, and the rough units comprise hemispherical, square, triangular cone, plane or series sine curved surface types, and are used for changing the roughness of the cavity between the single-slit movable plates; each fitting screw interface 15043 on the single-slit movable plate 1504 is identical, and the bolt portions of all the screw equivalent rough fittings 1506 are of identical specifications and sizes, so that the screw equivalent rough fittings 1506 can be adapted to the fitting screw interfaces on the single-slit movable plate, and each top-shaped screw equivalent rough fitting 1506 also has different specifications, so as to simulate different roughness.
The middle connecting joint of the single-slit movable plate surfaces comprises a compression spring 15041, a rubber sealing strip 15042 and a rotary connecting bolt 15047, the outer sides of the connecting positions of two adjacent single-slit movable plate surfaces in the sealing cavity are rotationally connected through the rotary connecting bolt, the compression spring 15041 and the rubber sealing strip 15042 are arranged on the inner sides of the two adjacent single-slit movable plate surfaces, the compression spring 15041 is connected with the single-slit movable plate surfaces and the rubber sealing strip 15042, the contact positions of the two rubber sealing strips 15042 of the two adjacent single-slit movable plate surfaces are in smooth contact, and therefore the sealing performance in the sealing cavity is not affected due to the fact that the two rubber sealing strips can rotate, can be mutually propped against each other, and are regulated by the compression spring, so that the sealing state is always kept under tension; the rotary connecting bolt 15047, the rubber strip and the spring are arranged in a tight strip shape along the width direction of the single-slit movable plate surface.
The expansion conversion interface 11 comprises a front part connected with the pipeline conversion interface 10 and a rear part connected with an outlet or an inlet of the analog box, wherein the front part of the expansion conversion interface is of a structure with a middle part and two small ends, the front part is connected with the pipeline conversion interface in a rectangular shape, the front part is connected with the pipeline conversion interface through a corresponding bolt and is fixed together, the middle part and the tail end of the front part are connected together through flexible materials, and the middle part and the front end of the front part are connected together through rigid materials; the rear part of the expansion conversion interface 11 is made of flexible materials, a bolt interface is arranged at the tail end outlet of the rear part, and the tail end outlet is connected with an inlet and an outlet of the analog box through the corresponding bolt interface; the pipeline adapter is used for connecting the blending stirring unit and the waste liquid recovery unit with the single-fracture simulation unit.
The pipeline transfer port is characterized in that one end of the pipeline transfer port is a round port, one end of the pipeline transfer port is a square port, the round pipe portion is a rotary or clamping groove type pipeline connection round port, and the square pipeline portion is a bolt connection square port.
The flexible material at the rear part of the expansion conversion interface 11 is sleeved on an upper single-slit movable plate surface and a lower single-slit movable plate surface with the opening degree adjusted, a bolt interface at the tail end of the flexible material is fixed with a movable plate surface bolt interface on the extending surface of the single-slit movable plate surface and a bolt interface on the outermost longitudinal guide rail through bolts to form a closed interface, and at the moment, the extending surface on the single-slit movable plate surface is not positioned at the edge part and is positioned at the front part of the outer surface of the single-slit movable plate surface; when the number of the single-slit movable plates is even and is more than four, the two ends of the single-slit movable plates positioned at the middle position are respectively provided with a middle connecting joint, and the rotary connecting bolts of the middle connecting joints extend to the two ends to penetrate out of the corresponding longitudinal guide rails and are fixedly connected with the sliding handles through threads.
The mixing stirring unit comprises a water tank 1, a mixing tank 4, a mixing tank blanking switch 5, a blanking flow stabilizer 6 and a stirring chamber 8, wherein pipeline valves 2, a pressure pump 3 and a pipeline pressure display 7 are arranged in front of and behind the stirring chamber 8; the front and rear of the simulation box are provided with a front camera device 12 and a rear illumination device 13, and the output pipeline of the stirring chamber 8 is connected with the inlet of the simulation box through a pipeline conversion interface and an expansion conversion interface;
The waste liquid recovery unit comprises a waste liquid recovery box 17, the waste liquid recovery box 17 is connected with an analog box outlet through a corresponding pipeline pressure display 7, a pipeline valve 2, another pipeline conversion port 10 and an expansion conversion port 11, and the front camera equipment 12 and the rear illumination equipment 13 can slide on a corresponding horizontal guide rail 16 through corresponding guide rail rolling pulleys 18, so that the camera shooting range and the illumination condition can be adjusted; pressure sensors are respectively arranged at the inlet position, the middle position and the outlet position of the inner side of the front and/or rear plate surface of the simulation box, and all the pressure sensors and the camera equipment are connected with a computer.
The invention also provides a use method of the simulation device for visually controlling the rough single-crack seepage, which comprises the following steps:
step 1: obtaining single crack surfaces with different roughness of the plate by replacing spiral equivalent rough fittings with different types;
step 2: the sliding handles (1503) at different positions of the simulation box are adjusted, so that the position distance among a plurality of single-slit movable plate surfaces (1504) is changed, and single-slit surfaces with different openings and shapes are obtained;
step 3: different fracture flowing mediums are prepared by adjusting materials in the doping box (4), sand and stone or slurry can be selected or water can be selected to participate in the doping box (4), or the water tank switch is controlled to select water to prepare different flowing materials to enter the single fracture simulation device;
Step 4: the size of the inlet end, the inclination angle of the middle end and the size of the outlet end of the single-slit movable plate surface (1504) are adjusted by adjusting a sliding handle (1503) on a longitudinal guide rail of the simulation box (15);
step 5: the flow characteristics of the simulation box (15) between the single crack surfaces are monitored in real time under the display of the transparent plates at the front side and the rear side through the camera and the lighting equipment;
step 6: according to the size of the inlet and outlet of the analog box (15), the telescopic butting device formed by the expansion conversion interface of the inlet and outlet is adjusted to adapt to different opening size requirements.
The using method comprises an opening degree adjusting method and a roughness adjusting method, and the setting is carried out according to specific experimental requirements.
Compared with the prior art, the invention has the beneficial effects that
The visual simulation device for the controllable rough single-crack seepage and the experimental method thereof are relatively simple, the whole device is modularized, the usability is high, the device is suitable for various single-crack simulation experiments, the front and rear transparent plates of the simulation box, the lighting equipment and the video equipment are designed to observe the fluid in the cavity between the single-crack movable plates, the visual purpose is achieved, the front and rear transparent plates, the rear lighting and front camera device can be used for well observing the flow characteristics between the single-crack movable plates in the whole simulation process, the effect of the influence of the crack inside the rock on different scouring liquid or filling materials can be well analyzed and assisted to be understood, the implementation problem of the rock seepage problem and the solution can be well understood, the roughness can be better adjusted by selecting different spiral equivalent roughness accessories to be arranged at different positions of the plates, and the influence of the roughness on the crack seepage under different environments can be better simulated.
The invention discloses a visual simulation device for controlling rough single-fracture seepage, which is a simulation device for single-fracture seepage, which can easily adjust the fracture opening and further research the influence of the roughness of the fracture, and the device is not used for truly simulating the actual fracture of a diagenetic rock, belongs to an equivalent single-fracture simulation device, can change the conditions of the fracture opening, the shape, the roughness and the like, and can be used for performing a simulation experiment of plugging or fracture propping agent effect on the basis, so that the movement rule of fluid in the single fracture under different conditions can be better researched. The invention provides equivalent simulation equipment for single-crack simulation, and the core of the equipment is controllable simulation of single-crack opening degree, shape, single-crack cavity type and rough unit fluctuation, and the design of the single-crack simulation box is realized through the movement of at least four single-crack movable plate surfaces on six longitudinal guide rails and equivalent rough fittings.
The simulation device can be used for simulating experiments of the crack flow characteristics of the same crack shape under different roughness, experiments of simulating the crack flow characteristics of different types of single cracks under the same roughness, experiments of simulating plugging of different plugging materials on preset types of cracks (namely, experiments of adjusting the upper opening and the lower opening of a plate surface and changing different plugging materials to evaluate the plugging effect of the plugging materials on the cracks), experiments of simulating the erosion effect of different crack flushing fluids on the cracks and the like, is an experimental device for visually controlling the single cracks to different types of flushing mediums, different types of roughness and different types of cracks, can meet the requirement of experimental staff on the research and test of adjusting the crack types and the roughness thereof according to different crack parameters and simulating the flow characteristics of different crack flushing mediums in the cracks, equivalently evaluates the flow characteristics of simulated cracks under different conditions, and further evaluates the effects of crack types, crack flushing fluids, roughness and pressure according to the experimental effect of the cracks.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a simulation device for visualizing controllable rough single-fracture seepage in accordance with the present invention.
FIG. 2 is a schematic diagram of the installation structure of a single-crack movable plate surface and a longitudinal guide rail and a sliding handle in a simulation box in the visual controllable coarse single-crack seepage simulation device.
FIG. 3 is a schematic diagram of a single-slit movable panel of an embodiment of a simulation apparatus for visualizing controlled rough single-slit seepage in accordance with the present invention.
FIG. 4 is a schematic diagram of another view of a single-slit movable floor of an embodiment of a simulation apparatus for visualizing controlled rough single-slit seepage in accordance with the present invention.
Fig. 5 is an enlarged schematic view of the structure of the middle connecting part I of two adjacent single-slit movable panels inside the simulation box in fig. 2.
FIG. 6 is a schematic diagram of the mounting structure of a single-slit movable panel fitting screw interface and a screw equivalent rough fitting.
FIG. 7 is a schematic view of the structure of a screw equivalent rough fitting of different types according to the present invention.
FIG. 8 is a schematic diagram of an expansion conversion interface of an embodiment of a visual simulation apparatus for controlling rough single-crack seepage according to the present invention.
FIG. 9 is a schematic diagram of the pressure sensor mounting locations of a simulation apparatus for visualizing controlled rough single-slit seepage in accordance with the present invention.
In the figure: 1. the device comprises a water tank, 2, pipeline valves, 3, a pressure pump, 4, a blending box, 5, a blending box blanking switch, 6, a blanking flow stabilizer, 7, a pipeline pressure display, 8, a stirring chamber, 9 and a stirrer, 10, a pipeline conversion interface, 11 an expansion conversion interface, 12, a camera device, 13, a lighting device, 14 computers, 15 simulation boxes, 16, a horizontal guide rail, 17, a waste liquid recovery box and 18 guide rail rolling pulleys;
1502. longitudinal guide rails, 1503, sliding handles, 1504, single-slit movable plate surfaces, 1506, spiral equivalent rough fittings, 1507, single-slit analog inlet pressure sensors, 1508, single-slit analog middle port pressure sensors, 1509, single-slit analog outlet pressure sensors, 1510, single-slit analog plate upper left blocks, 1511, single-slit analog plate upper right blocks, 1501, single-slit analog plate lower left blocks, 1505, single-slit analog plate lower right blocks.
15061 bolts, 15062 metal shims, 15063 rubber shims, 15064 bolt sections,
15041 compression springs, 15042 rubber closure strips, 15043 fitting screw-on interfaces, 15044 extensions, 15045 extension planes, 15046 movable panel bolt-on interfaces, 15047 swivel connecting bolts, 15048 sealing strips,
1101, a bolt interface of the conversion interface, a front end with a large middle and small two ends of 1102,
1001 a bolt interface of a pipeline adapter.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
The invention discloses a visual controllable coarse single-crack seepage simulation device, which is shown in figures 1-7 and comprises a water tank 1, a pipeline valve 2, a pressure pump 3, a pipeline pressure display 7, a stirring chamber 8, a blending box 4, a blending box blanking switch 5, a blanking flow stabilizer 6, the stirring chamber 8, an expansion conversion interface 11 of an inlet and an outlet of the simulation box, the simulation box 15, a waste liquid recovery box 17, a front camera device 12, a rear illumination device 13 and a computer 14.
The whole equipment can be divided into three systems, and the first system is a stirring system and comprises a water tank 1, a blending box 4, a blending box blanking switch 5, a blanking flow stabilizer 6 and a stirring chamber 8, wherein a pipeline valve 2, a pressure pump 3 and a pipeline pressure display 7 are arranged in front of and behind the stirring chamber 8. The second system is an analog box 15, an expansion conversion interface 11 arranged at an analog box entrance, a front-mounted camera device 12 and a rear-mounted illumination device 13 arranged at the front and rear of the analog box, the first system is connected with the second system, the connection positions of the two are connected with the expansion conversion interface of the analog box entrance through a pipeline conversion interface, the expansion conversion interface of the analog box entrance is connected with the analog box entrance, the pipeline conversion interface 10 changes a circular pipeline into a rectangular channel opening matched with the expansion conversion interface 11 of the analog box entrance, the rear-mounted illumination device 13 is arranged at the rear of the analog box 15, and the front-mounted camera device 12 is arranged in front of the analog box 15. The third system comprises a waste liquid recovery tank 17, wherein the waste liquid recovery tank 17 is connected with an expansion conversion interface 11 of an outlet of the simulation tank through a corresponding pipeline pressure display 7, a pipeline valve 2 and another pipeline conversion interface 10, and the expansion conversion interface of the outlet of the simulation tank is connected with the outlet of the simulation tank. The front-mounted camera device 12 and the rear-mounted lighting device 13 can slide on the corresponding horizontal guide rail 16 through the corresponding guide rail rolling pulleys 18, the camera shooting range and the illumination condition can be adjusted, the front-mounted camera device and the rear-mounted lighting device can move in the horizontal direction through the guide rails and move in the vertical direction through the vertical sliding rails of the rods, and meanwhile the front-mounted camera device and the rear-mounted lighting device can rotate in the horizontal direction, so that an experimenter can conveniently monitor each position. The inlet position, the middle position and the outlet position of the inner side of the front and/or rear plate surface of the simulation box are respectively provided with a single-crack simulation inlet pressure sensor 1507, a single-crack simulation middle port pressure sensor 1508 and a single-crack simulation outlet pressure sensor 1509, the pressure sensors are also fixed at the middle position of the simulation box through sliding handles to monitor and analyze the inlet, the middle end and the outlet of the single-crack movable plate surface, all the pressure sensors and the camera equipment are connected with a computer, and the computer is used for collecting image data and observing the flowing state of liquid.
The pipeline transfer ports between the first system and the second system and between the second system and the third system are required to be changed from round pipelines to square pipelines, and the pipeline transfer ports are in common pipeline connection (rotary type or clamping groove type and the like) at round pipeline parts and are in bolt connection at square pipelines. For the connection of the expansion conversion interface between the analog box and the analog box gateway, since the opening at the single-slit movable plate 1504 is changed, it needs to be emphasized here that, since the expansion conversion interface is flexible near the single-slit open analog box, and only iron bolt openings are distributed around the interface, the connection between the expansion conversion interface and the analog box is sealed and fixed by a circle of bolts, gaskets, and the like.
The simulation box 15 comprises a front transparent plate, a rear transparent plate, at least six longitudinal guide rails 1502 with a certain interval width, four single-slit movable plate surfaces 1504, a plurality of spiral equivalent rough fittings 1506, a sliding handle 1503, a joint 1505 connected between the single-slit movable plate surfaces, a left side plate and a right side plate with holes, and an upper plate and a lower plate.
The front transparent plate, the rear transparent plate, the upper plate, the lower plate, the left side plate and the right side plate enclose a cuboid box body, three longitudinal guide rails are symmetrically arranged on opposite surfaces of the two transparent plates along the height direction respectively, six transparent plates are used for ensuring the visualization requirement, and the rear illumination equipment 13 and the front camera equipment 12 are allowed to be matched for use so as to finish capturing and observing seepage movement between single-slit movable plates. The invention can also be provided with no left and right side plates, at the moment, the upper plate, the lower plate, the front plate, the rear plate and the rear plate form a square channel, a plurality of single-slit movable plate surfaces are arranged, the number of the plurality of single-slit movable plate surfaces is at least four and is even, the plurality of single-slit movable plate surfaces are divided into an upper group and a lower group, and the two groups of single-slit movable plate surfaces, the front plate, the rear plate, the two expansion conversion interfaces 11 form a sealed channel for a slit scouring medium to circulate. When the number of the single-slit movable plates is increased, the number of the longitudinal guide rails is correspondingly increased, so that the height of each single-slit movable plate can be independently adjusted.
At least six longitudinal rails 1502 have a certain interval width, the longitudinal rails are provided with sliding grooves along the height direction, openings matched with the sliding grooves are also arranged at corresponding positions of the transparent plates provided with the longitudinal rails, and the longitudinal rails are arranged firstly to ensure that one end of each single-slit movable plate can move up and down freely, and secondly to ensure that a single-slit movable plate has a certain flexible space in local rotation, so that the situation that the single-slit movable plate can only move up and down in parallel is avoided. The horizontal distance between the adjacent longitudinal guide rails is the standard that a single-slit movable plate surface can be installed. The opening degree, distance, shape and the like of the upper plate and the lower plate of the simulated fracture can be adjusted under the guidance of six sliding longitudinal guide rails. In order to enable the single-slit simulation to flexibly move, it is noted that gaps between six longitudinal guide rails of the simulation box are large enough to ensure that four single-slit movable plate surfaces can locally rotate in the simulation box.
At least four single-slit movable plates 1504 with adjustable dip angles are arranged in the simulation box 15, sliding handles 1503 are arranged on at least six longitudinal guide rails 1502 at the connection positions of the single-slit movable plates 1504, and the sliding handles 1503 are positioned on the outer sides of the transparent plates. The sliding handles are used for sliding and fixing, extension parts 15044 are arranged on the end faces of two ends of each single-slit movable plate 1504 along the fluid flowing direction, the extension parts can slide up and down along the corresponding longitudinal guide rails under the action of the sliding handles, one ends of the extension parts, which extend out of the transparent plates, are provided with threads, the sliding handles are also provided with threads, the sliding handles are connected with the threads, the single-slit movable plates are fixed at any positions through screwing the threads, the heights of the single-slit movable plates are adjusted through unscrewing the threads, sealing treatment is arranged at the connection positions of the extension parts and the longitudinal guide rails, if openable sealing strips are arranged on sliding grooves of the longitudinal guide rails, the extension parts can penetrate through the sealing strips to be connected with the sliding handles, sealing strips at positions where the extension parts pass are opened, and sealing strips at positions where the extension parts do not pass are closed.
The array type multiple fitting spiral interfaces 15043 are arranged on each single-slit movable plate surface and are used for arranging spiral equivalent rough fittings 1506, sealing strips 15048 are arranged at the contact edges of each single-slit movable plate surface 1504 and the transparent plate, extension surfaces 15045 which are extended to one side are arranged on one edge of each single-slit movable plate surface perpendicular to the transparent plate, multiple movable plate surface bolt interfaces 15046 are uniformly arranged on the extension surfaces, four single-slit movable plate surfaces 1504 are respectively marked as an upper left single-slit simulation plate 1510, an upper right single-slit simulation plate 1511, a lower left single-slit simulation plate 1501 and a lower right single-slit simulation plate 1505, two single-slit movable plate surfaces in the four single-slit movable plate surfaces 1504 are in the first group, the two single-slit movable plate surfaces in the first group are in the second group, and the two single-slit movable plate surfaces in the first group are in sealing connection through a connecting joint in the middle of the single-slit movable plate surfaces, so that the two single-slit movable plate surfaces in the first group can be relatively rotated and in sealing connection, and each single-slit movable plate surface is fixed on a handle through a longitudinal slit 1502.
The screw equivalent rough fitting 1506 is provided with bolts at the bottom, and rough fittings with rough units of different shapes and sizes, such as hemispherical, square, triangular cone, planar or series sine curved surface types, can be manufactured at the top, so as to change the roughness of the cavity between the single-slit movable plates. All the bolt portions of the screw equivalent rough fitting 1506 are of the same size and are designed to fit the fitting screw interface on a single-slot deck, and each top-shaped screw equivalent rough fitting 1506 in the present invention also has different specifications and can simulate different roughness levels.
In the invention, each fitting spiral interface 15043 on the single-slit movable plate 1504 in the simulation box 15 is the same, spiral equivalent rough fittings 1506 can be connected to different fitting spiral interface positions, different types and sizes of spiral equivalent rough fittings 1506 can be replaced according to different simulation conditions, the spiral equivalent rough fittings 1506 can be manufactured according to the required slit types, and the spiral equivalent rough fittings with hemispherical, cube, triangular cone, series of sine curve types and the like are manufactured, and fit according to actual single-slit, size effect, different shape heads, and change the size and/or shape of the shape heads.
The basic shape of the screw equivalent rough fitting is shown in fig. 3, the bottom is a screw thread, the top is an arbitrary shape, and the fitting screw interface on the single-slit movable plate 1504 can be embedded into the screw thread on the upper part of the screw equivalent rough fitting and fixed by bolts 15061 under the action of two layers of gaskets (metal gasket 15062 and rubber gasket 15063). The top part is the key point of the spiral equivalent rough fitting, each fitting spiral interface 15043 on the single-slit movable plate 1504 can be provided with spiral equivalent rough fittings with different shapes according to the requirements, the bolt part of the spiral equivalent rough fitting 1506 is arranged outside a cavity surrounded by four single-slit movable plates, and the tops of the equivalent rough units with different shapes are arranged inside the cavity surrounded by four single-slit movable plates. For equivalent roughness, the invention is not an actual rock fracture, but a single fracture approximation simulation component.
For the size of the single-slit movable plate, the specific size of the single-slit movable plate is not limited, the ratio of the width to the length of each single-slit movable plate is preferably 1:2, the distance between two adjacent accessory screw interfaces is the unit width, two rows of accessory screw interfaces are arranged on the unit width, and the unit width can be adjusted according to the actual size of the simulation box and the size of the single-slit movable plate.
The sliding handles 1503, one end of each single-slit movable plate surface has two horizontal sliding handles which can be fixed on the longitudinal guide rail 1502, so that in order to change the height of each end of each single-slit movable plate surface, six two-two horizontal sliding handles can be adjusted at will, and then simulated single-slit channels with arbitrary shapes, different opening degrees and different slit cavities formed by four single-slit movable plate surfaces can be obtained.
The joint is connected in the middle of the single-slit movable plate surface, as shown in fig. 5, and is a schematic vertical section view of the joint position of two single-slit movable plate surfaces, in the design of the joint, the rotation requirement between two adjacent single-slit movable plate surfaces is met, and the sealing requirement of the inner cavity of the single-slit movable plate surfaces is also met. In fig. 5, the connecting and moving parts between two adjacent single-slit movable plates are shown, the outer half part of the outer side of the cavity of the single-slit movable plate can be kept to rotate by a common latch rotation design, for example, a hinge connection bolt 15047 is hinged and rotated, the inner half part close to the inner side of the cavity of the single-slit movable plate is provided with an inner side compression spring 15041 and a rubber sealing strip 15042, the inner side compression spring 15041 connects the single-slit movable plate and the rubber sealing strip 15042, and the contact positions of the two rubber sealing strips 15042 are smooth contact. The sealing performance in the cavity between the single-slit movable plates can be not influenced by rotation, the rubber sealing strips can be mutually propped against and regulated by the compression springs, so that the rubber sealing strips always maintain a tense sealing state. Because the single-slit movable plate surface has a width, the rotary connecting bolts 15047, the rubber strips and the springs are arranged in a compact strip shape along the width direction of the single-slit movable plate surface.
In the invention, two adjacent single-slit movable plates 1504 in the simulation box 15 are rotationally and hermetically connected together through the joint in the middle of the single-slit movable plates, so that the rotatability and the sealing performance are ensured.
The design purpose of the expansion conversion interface 11 is to adapt to the distance between the upper single-slit movable plate surface and the lower single-slit movable plate surface at the inlet and outlet of the single-slit simulation box, because the distance between the front transparent plate and the rear transparent plate of the simulation box is unchanged, only the size of the inlet and outlet is changed, but the sliding handle at one end of the longitudinal single-slit movable plate surface is controlled to be displaced, on the selected material, the part close to the inlet and outlet of the single-slit movable plate surface adopts flexible materials, thus even if the upper single-slit movable plate surface and the lower single-slit movable plate surface are adjusted to the maximum distance, the two single-slit movable plate surfaces can be butted to the inlet and outlet of the simulation box, one side of the flexible materials of the expansion conversion interface 11 at the inlet of the simulation box is connected with a rigid connection end surface, the end surface is provided with a bolt interface 1101 of the expansion conversion interface, the bolt interface 1101 is used for being fixed with the bolt interface of the movable plate surface on the extension surface of the upper single-slit movable plate surface and the lower single-slit movable plate surface, and the bolt interface on the longitudinal guide rail is also arranged along the height direction, so that the extension surface of the upper single-slit movable plate surface and the bolt interface on the longitudinal guide rail is just butted with the bolt interface 1101 of the expansion conversion interface at the inlet and outlet of the single-slit movable interface 11, and the expansion conversion interface is tightly connected through a gasket. The four sides of the rectangle where the bolt interface 1101 of the expansion conversion interface is located are not connected with each other, so that when the opening angle of the inlet is changed, the upper side and the lower side of the rectangle where the bolt interface 1101 of the expansion conversion interface is located can be changed independently, and the opening angle of the inlet is adapted to the change.
The expansion conversion interface 11 comprises a front part connected with the pipeline conversion interface 10 and a rear part connected with an outlet or an inlet of the analog box, the front part of the expansion conversion interface is of a structure with a middle size and two small ends, the front part is connected with the pipeline conversion interface in a rectangular shape, the front part is connected with the pipeline conversion interface through corresponding bolts, the middle and the tail end of the front part are connected together through flexible materials, the middle and the front end of the front part are connected together through rigid materials, the structure with the middle size and the two small ends can replace a manual pressurizing valve to simulate experiments before and after a crack is pressed in a balanced mode, meanwhile, slurry can be mixed locally again, and impact on a follow-up flexible structure is reduced. The rear part of the expansion conversion interface 11 is made of flexible materials, a bolt interface is arranged at the tail end outlet of the rear part, and is connected with an inlet and an outlet of the simulation box (namely, an opening opened by a single-slit movable plate surface, and the bolt interface is connected with the corresponding single-slit movable plate surface). If be equipped with the curb plate about the simulation case, open porose on the curb plate, can make flexible material stretch into, the flexible material's of whole in-process deformation that the trompil size can adapt to the upper and lower regulation of single crack activity face. The arrangement of the expansion conversion interface is unlike a common pipeline, so that the expansion conversion interface can enable the fluid to advance in a small range in a fluctuating way, on one hand, the fluid can be mixed into the single-fracture simulation box again, on the other hand, the structure of the conversion interface can be manually regulated to pressurize, the effect of balancing the pressure is achieved, and the effects of standby pressurizing equipment and buffering the fluid can be achieved.
In the invention, the flexible material at the rear part of the expansion conversion interface 11 is sleeved on an upper single-slit movable plate surface and a lower single-slit movable plate surface with the opening degree adjusted, the bolt interface at the tail end of the flexible material is fixed with the movable plate surface bolt interface 15046 on the extending surface of the single-slit movable plate surface and the bolt interface on the outermost longitudinal guide rail through bolts to form a closed interface, and at the moment, the extending surface on the single-slit movable plate surface is not positioned at the edge part and is positioned at the front part of the outer surface of the single-slit movable plate surface. When the number of the single-slit movable plates is an even number greater than 4, the two ends of the single-slit movable plates positioned at the middle position are respectively provided with a middle connecting joint, the rotating connecting bolts of the middle connecting joints extend to the two ends to penetrate through corresponding longitudinal guide rails and are fixedly connected with the sliding handles through threads, and the sliding handles at the positions can be adjusted to simultaneously adjust the two single-slit movable plates connected with the middle connecting joints to move up and down.
In the invention, the inlet and outlet of the analog box 15 are provided with expansion conversion interfaces with adjustable size, namely, the inlet end is connected with the expansion conversion interface 11 of the inlet of the analog box, and the outlet end is connected with the expansion conversion interface 11 of the outlet of the analog box. The interface is used for adapting to the access opening of the single-slit movable plate surface which is changed up and down, the part close to the simulation box is flexible, and the largest opening or outlet size of the single-slit movable plate surface can be butted to the greatest extent. The expansion conversion interface 11 can meet the distance between the upper single-slit movable plate surface and the lower single-slit movable plate surface on the inlet end and the outlet end of the maximum simulation box to the greatest extent, the rigid spiral interface is discontinuously arranged around the flexible material butt joint interface, the sealing material is matched for butt joint, one end of the expansion conversion interface is connected with the pipeline conversion interface 10, the other end of the expansion conversion interface is connected with the simulation inlet or outlet formed by opening the upper single-slit movable plate surface 1504 and the lower single-slit movable plate surface 1504, the middle part of the expansion conversion interface is made of the flexible material, and the expansion conversion interface can be freely and telescopically adjusted.
The working process of the invention is as follows: the water flows out of the water tank 1, the pipeline valve 2 is opened, the water flows through the pressure pump 3 and is sent to the stirring chamber 8 through the pipeline pressure display 7, meanwhile, the doping medium is stored in the doping tank 4, the doping tank blanking switch 5 is opened, the stirring mixed crack flushing (filling) material enters the stirring chamber through the blanking flow stabilizing device 6, the stirring mixed crack flushing (filling) material is pumped through the stirrer outlet switch by the other pressure pump, the stirring mixed crack flushing (filling) material enters the simulation tank through the pipeline pressure display 7 and the simulation tank inlet expansion conversion interface 11, the mixed crack flushing (filling) material flows between controllable single crack movable plates, the mixed crack flushing (filling) material flows out of the expansion conversion interface 11 at the outlet of the simulation tank, the mixed crack flushing (filling) material flows into the waste liquid recovery tank 17 through the corresponding pipeline valve and the pipeline pressure display, a front camera monitors the crack simulation plate fluid before the simulation tank, a rear lighting device is arranged behind the simulation tank, and the single crack pressure sensor 1507, the single crack pressure sensor 1508 and the single crack pressure sensor 1509 monitor the crack pressure in the single movable plate cavity.
The inclination angle is adjusted through each extension part of the single-slit movable plate surface, the extension parts can be clamped in the longitudinal sliding guide rails, meanwhile, the distance between the longitudinal guide rails is large enough, and the sliding handle can be fixed on the longitudinal guide rails in a screwing mode. Therefore, the inclination angles of the four single-slit movable plates, the shape in the cavity of the single-slit movable plate and the like can be changed by moving each end of the single-slit movable plate up and down on six longitudinal guide rails.
The opening degree adjusting method of the invention comprises the following steps:
step 1: and acquiring a rock mass fracture surface diagram of which the rock mass fracture surface is matched to be simulated, and determining the undulating shape according to a certain interval. The crack pattern is obtained by processing original rock microscopic images before an experiment, a certain section of crack is selected in a basic mode, the image roughness of the crack is processed, the crack pattern is one step to be completed before the experiment, the single crack simulation device performs the experiment on the premise that the processed single crack rough unit fluctuation characteristics are obtained, so that the shape, the inter-plate distance and the cavity characteristics of four single crack movable plates are adjusted, the spiral equivalent rough fittings of the fitting spiral interfaces on each single crack movable plate are selected, the arrangement is carried out according to the owned crack processing images, and the fluctuation shape is obtained by using the spiral equivalent rough fittings with different shapes to approximate the fluctuation characteristics of original actual cracks as far as possible.
Step 2: the sliding handles 1503 are adjusted according to the undulating shape of each position.
Step 3: the sliding handles 1503 on the front end longitudinal sliding rails 1502 of the single-slit movable plate 1504 in the simulation box 15 are longitudinally slid back and forth simultaneously, the front and back sliding handles are kept on the same horizontal plane, the middle end longitudinal sliding rails 1503 sliding handles longitudinally slide as required, and the rear end longitudinal sliding rails 1502 sliding handles longitudinally as required to adjust the shape of the four single-slit simulation movable plate 1504.
Step 4: the front inlet end and the rear inlet end of the simulation box 15 are connected with the expansion conversion interface 11 of the simulation box inlet and the expansion conversion interface 11 of the simulation box outlet are connected with the outlet end, and the expansion butt joint device prepared by flexible materials of the expansion conversion interface of the inlet and the outlet is adjusted to adapt to different size requirements according to the size of the inlet and the outlet of the simulation box 15.
Step 5: opening the front-mounted imaging equipment 12 of the simulation box, and simultaneously opening the front-mounted switch pipeline valve 2 of the simulation box, wherein a fluid test is formed inside the single-slit movable plate surfaces of the model;
step 6: the front-end camera 12 records the crack test of the simulation box 15, performs the test of the opening change of the crack by adjusting the sliding handles 1503 on the six longitudinal rails of the simulation box, and analyzes the data to draw a conclusion.
The roughness adjusting method of the invention comprises the following steps:
step 1: and acquiring a rock mass fracture surface diagram of which the rock mass fracture surface is matched to be simulated, and determining the coefficients of the undulating shape and the roughness according to a certain interval.
Step 2: and according to the required roughness coefficient requirements of different single cracks and equivalent simulation experiments, arranging required equivalent roughness spiral interface fittings at different positions and different intervals on two rows of spiral interfaces of the single-crack movable plate surface.
Step 3: where it is not necessary to highlight asperities, a flat equivalent screw interface fitting without highlighting may be used to fill the screw interface on the single-fracture active plate 1504 when simulating various types of non-asperity fractures, maintaining the closure of the simulated fracture surface cavity.
Step 4: the front inlet end and the rear inlet end of the simulation box 15 are connected with the expansion conversion interface 11 of the simulation box inlet and the expansion conversion interface 11 of the simulation box outlet are connected with the outlet end, and the expansion butt joint device prepared by flexible materials of the expansion conversion interface of the inlet and the outlet is adjusted to adapt to different size requirements according to the size of the inlet and the outlet of the simulation box 15.
Step 5: opening equipment in front of the simulation box, and simultaneously opening a switching pipeline valve 2 in front of the simulation box, wherein a fluid test is formed in the space between the single-slit movable plates of the model;
step 6: and (3) installing different equivalent spiral interface fittings on the single-slit movable plate surface of the simulation box through adjusting, testing the change of the roughness coefficient of the slit, and analyzing data to obtain a conclusion.
In the invention, the direction of the transparent plate is defined as the front-back direction, and the direction of the entrance is defined as the left-right direction.
The visual simulation device for controlling the rough single-crack seepage and the experimental method thereof are relatively simple, accessories are modularized, the usability is high, the visual simulation device is suitable for various types of single-crack simulation experiments, the front and rear transparent plates are utilized, the rear illumination and front camera device can well observe the flow characteristics among the movable plates of the single-crack in the whole simulation process, the influence effect of the cracks in the rock on different flushing liquids or filling materials can be well analyzed and assisted to understand, the problem of rock seepage and the implementation problem of a solution can be better understood, and the roughness can be better adjusted by changing the inclination angle between the plates of the single-crack simulation device and adjusting the simulated opening between the single-crack plates, and by selecting different equivalent spiral roughness accessories to be installed at different positions between the plates, the parameter variables can be better changed, and the influence of the rock crack seepage condition and the opening roughness on the seepage under different types of different environments can be better simulated.
Although the present disclosure describes embodiments, not every embodiment is described in terms of a single embodiment, and such description is for clarity only, and one skilled in the art will recognize that the embodiments described in the disclosure as a whole may be combined appropriately to form other embodiments that will be apparent to those skilled in the art.
While the invention has been described in detail with respect to the general description and specific embodiments thereof, it will be apparent to those skilled in the art that various modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
The invention is applicable to the prior art where it is not described.
Claims (3)
1. The utility model provides a visual controllable coarse single crack seepage flow's analogue means, includes spike mixing unit and single crack analogue unit, waste liquid recovery unit, and the three connects gradually, its characterized in that: the single-crack simulation unit comprises an expansion conversion interface (11) and a simulation box (15), wherein at least four single-crack movable plates (1504) capable of adjusting the inclination angle are arranged in the simulation box (15), the simulation box (15) comprises a front transparent plate and a rear transparent plate, at least three longitudinal guide rails (1502) for enabling the corresponding single-crack movable plates (1504) in the simulation box to slide up and down are correspondingly arranged on the inner side surfaces of the front transparent plate and the rear transparent plate, sliding handles (1503) are arranged at the connection positions of the longitudinal guide rails (1502) and the single-crack movable plates, and the sliding handles are positioned on the outer sides of the transparent plates and are used for adjusting the heights of the single-crack movable plates in the vertical direction; at least four single-slit movable plate surfaces are arranged in the simulation box in an upper-lower two-group mode, a space surrounded by the upper-lower two-group single-slit movable plate surfaces and the front transparent plate and the rear transparent plate is a sealed cavity, an inlet and an outlet of the sealed cavity are simulation box inlets and outlets, and the simulation box inlets and outlets are respectively connected with an expansion conversion interface (11) which can adapt to the opening change of the inlet and outlet;
The device comprises a transparent plate, a plurality of accessory screw interfaces, a sealing strip, a plurality of movable plate bolt interfaces, a plurality of movable plate interfaces and a plurality of movable plate interfaces, wherein the accessory screw interfaces are arranged on each single-slit movable plate and are used for arranging screw equivalent rough accessories, sealing strips are arranged at the contact edges of each single-slit movable plate and the transparent plate, an extending surface which extends to one side is arranged on one edge of the single-slit movable plate vertical to the transparent plate, and the movable plate interfaces are uniformly arranged on the extending surface;
the screw equivalent rough fitting is provided with bolts at the bottom, and rough units with different shapes and sizes are arranged at the top of the screw equivalent rough fitting, and the screw equivalent rough fitting comprises hemispherical, cube, triangular cone, plane or series sine curved surface types and is used for changing the roughness degree in a cavity between single-slit movable plates; the screw interfaces of all the fittings on the single-slit movable plate surface (1504) are the same, the bolt parts of all the screw equivalent rough fittings are of the same specification and size, the screw equivalent rough fittings can be matched with the screw interfaces of the fittings on the single-slit movable plate surface, the screw equivalent rough fittings with different top shapes also have different specifications, and different rough degrees can be simulated;
The front part of the expansion conversion interface is of a structure with a middle size and two small ends, the front part of the expansion conversion interface is connected with the pipeline conversion interface and is fixed with the pipeline conversion interface through corresponding bolts, the middle and tail ends of the front part are connected with each other through flexible materials, and the middle and front ends of the front part are connected with each other through rigid materials; the rear part of the expansion conversion interface is made of flexible materials, a bolt interface is arranged at the tail end outlet of the rear part, and the tail end outlet is connected with an inlet and an outlet of the analog box through the corresponding bolt interface; the pipeline adapter is used for connecting the blending stirring unit and the waste liquid recovery unit with the single-crack simulation unit;
the flexible material at the rear part of the expansion conversion interface is sleeved on an upper single-slit movable plate surface and a lower single-slit movable plate surface with the opening degree adjusted, a bolt interface at the tail end of the flexible material is fixed with a movable plate surface bolt interface on the extending surface of the single-slit movable plate surface and a bolt interface on the outermost longitudinal guide rail through bolts to form a closed interface, and at the moment, the extending surface on the single-slit movable plate surface is not positioned at the edge part and is positioned at the front part of the outer surface of the single-slit movable plate surface; when the number of the single-slit movable plates is an even number greater than four, the two ends of the single-slit movable plate positioned at the middle position are provided with middle connecting joints, and the rotary connecting bolts of the middle connecting joints extend to the two ends to penetrate through corresponding longitudinal guide rails and are fixedly connected with the sliding handles through threads;
The middle connecting joint of the single-slit movable plate surface comprises a compression spring, a rubber sealing strip and a rotary connecting bolt, the outer sides of the connecting positions of two adjacent single-slit movable plate surfaces in the sealing cavity are rotationally connected through the rotary connecting bolt, the compression spring and the rubber sealing strip are arranged on the inner sides of the connecting positions of the two adjacent single-slit movable plate surfaces, the contact positions of the two rubber sealing strips of the two adjacent single-slit movable plate surfaces are smooth contact, the sealing performance in the sealing cavity can be not influenced by rotation, the rubber sealing strips can abut against each other, and the sealing state is always kept in a tension sealing state by means of adjustment of the compression spring; the rotary connecting bolt, the rubber strip and the spring are closely arranged in a strip shape along the width direction of the single-slit movable plate surface;
the opening degree adjustment includes the steps of:
step 1: acquiring a rock mass fracture surface diagram of which the rock mass fracture surface is matched to be simulated, and determining the undulating shape according to a certain interval; the crack image is obtained by processing original rock microscopic images before an experiment, the basic mode is to select a certain section of crack, process the image roughness of the crack, and is one step to be completed before the experiment, the single crack simulation device performs the experiment on the premise that the processed single crack rough unit fluctuation characteristics are obtained, so that the shape, the inter-plate distance and the cavity characteristics of four single crack movable plate surfaces are adjusted, the spiral equivalent rough fitting of the fitting spiral interface on each single crack movable plate surface is selected, the arrangement is carried out according to the owned crack processing images, and the fluctuation shape is to approximate to the fluctuation characteristics of the original actual crack as far as possible through the spiral equivalent rough fitting with different shapes;
Step 2: adjusting the sliding handles (1503) according to the undulating shape of each position;
step 3: sliding handles (1503) on front-end longitudinal sliding rails (1502) of single-slit movable plates (1504) in a simulation box (15) longitudinally slide back and forth simultaneously, the front-end and back sliding handles are kept on the same horizontal plane, the middle-end longitudinal sliding rails (1503) sliding handles longitudinally slide as required, and the sliding handles of rear-end longitudinal sliding rails (1502) longitudinally slide as required to adjust the shape of four single-slit simulation movable plates (1504);
step 4: the front and rear inlet ends of the simulation box (15) are connected with an expansion conversion interface (11) of the inlet of the simulation box and the expansion conversion interface (11) of the outlet end of the simulation box, and the expansion butt joint device prepared by flexible materials of the expansion conversion interface of the inlet and outlet is adjusted to adapt to different size requirements according to the size of the inlet and outlet of the simulation box (15);
step 5: opening a front-mounted camera device (12) of the simulation box, and simultaneously opening a front-mounted switch pipeline valve (2) of the simulation box, wherein a fluid test is formed in the space between the single-slit movable plates of the model;
step 6: the front camera equipment (12) records a crack test of the simulation box (15), performs the crack opening change test by adjusting sliding handles (1503) on six longitudinal guide rails of the simulation box, and analyzes data to obtain a conclusion;
The roughness adjustment comprises the following steps:
step 1: acquiring a rock mass fracture surface diagram of which the rock mass fracture surface is matched to be simulated, and determining the coefficients of the undulating shape and the roughness according to a certain interval;
step 2: according to the requirements of roughness coefficients of different single cracks and equivalent simulation experiments, arranging required equivalent roughness spiral interface fittings at different positions and different intervals on two rows of spiral interfaces of a single-crack movable plate surface;
step 3: when various types of cracks without roughness are simulated, the non-protruding flat equivalent screw interface fittings are used for filling screw interfaces on a single-crack movable plate surface (1504) to keep the sealing performance of a simulated crack surface cavity;
step 4: the front and rear inlet ends of the simulation box (15) are connected with an expansion conversion interface (11) of the inlet of the simulation box and the expansion conversion interface (11) of the outlet end of the simulation box, and the expansion butt joint device prepared by flexible materials of the expansion conversion interface of the inlet and outlet is adjusted to adapt to different size requirements according to the size of the inlet and outlet of the simulation box (15);
step 5: starting equipment in front of the simulation box, and simultaneously starting a front-mounted switch pipeline valve (2) of the simulation box, wherein a fluid test is formed in the space between the single-slit movable plates of the model;
Step 6: different equivalent spiral interface fittings are installed on the single-slit movable plate surface of the simulation box through adjustment, a test of the change of the roughness coefficient of the slit is carried out, and data are analyzed to obtain a conclusion;
the application method of the simulation device for visual controllable rough single-crack seepage comprises the following steps:
step 1: obtaining single crack surfaces with different roughness of the plate by replacing spiral equivalent rough fittings with different types;
step 2: the sliding handles (1503) at different positions of the simulation box are adjusted, so that the position distance among a plurality of single-slit movable plate surfaces (1504) is changed, and single-slit surfaces with different openings and shapes are obtained;
step 3: different fracture flowing mediums are prepared by adjusting materials in the doping box (4), sand and stone or slurry can be selected or water can be selected to participate in the doping box (4), or the water tank switch is controlled to select water to prepare different flowing materials to enter the single fracture simulation device;
step 4: the size of the inlet end, the inclination angle of the middle end and the size of the outlet end of the single-slit movable plate surface (1504) are adjusted by adjusting a sliding handle (1503) on a longitudinal guide rail of the simulation box (15);
step 5: the flow characteristics of the simulation box (15) between the single crack surfaces are monitored in real time under the display of the transparent plates at the front side and the rear side through the camera and the lighting equipment;
Step 6: according to the size of the inlet and outlet of the analog box (15), the telescopic butting device formed by the expansion conversion interface of the inlet and outlet is adjusted to adapt to different opening size requirements.
2. A simulation device according to claim 1, wherein the pipe transfer port has a round port at one end and a square port at one end, the round port is a rotary or slot type pipe connection round port at the round pipe portion, and the square port is a bolt connection square port at the square pipe portion.
3. The simulation device according to claim 1, wherein the blending stirring unit comprises a water tank, a blending box blanking switch, a blanking flow stabilizer and a stirring chamber, and pipeline valves, a pressure pump and a pipeline pressure display are arranged in front of and behind the stirring chamber; the front and rear of the simulation box are provided with a front camera device and a rear illumination device, and an output pipeline of the stirring chamber is connected with an inlet of the simulation box through a pipeline conversion interface and an expansion conversion interface;
the waste liquid recovery unit comprises a waste liquid recovery box, the waste liquid recovery box is connected with an outlet of the simulation box through a corresponding pipeline pressure display, a pipeline valve, another pipeline conversion port and an expansion conversion port, and the front-mounted camera equipment and the rear-mounted illumination equipment can slide on corresponding horizontal guide rails through corresponding guide rail rolling pulleys so as to adjust the camera shooting range and the illumination condition; pressure sensors are respectively arranged at the inlet position, the middle position and the outlet position of the inner side of the front and/or rear plate surface of the simulation box, and all the pressure sensors and the camera equipment are connected with a computer.
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| CN115524261B (en) * | 2022-10-14 | 2023-09-19 | 山东科技大学 | Rock stratum grouting water plugging test device and method under mining coupling condition |
| CN116539813B (en) * | 2023-05-25 | 2024-04-09 | 西南石油大学 | Wall roughness adjustable crack medium microorganism mineralization shutoff model device |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105639989A (en) * | 2016-02-26 | 2016-06-08 | 殷昌（苏州）包装有限公司 | Vacuum pump cosmetic container |
| CN205941290U (en) * | 2016-07-15 | 2017-02-08 | 中国矿业大学 | Visual analog system of coarse fracture network seepage flow ration |
| CN108169457A (en) * | 2017-12-26 | 2018-06-15 | 山东大学 | A kind of visualization becomes aperture crack grouting rig for model test and application method |
| CN109883925A (en) * | 2019-03-27 | 2019-06-14 | 武汉大学 | The coarse crack of change aperture and preparation method thereof for visualized experiment |
| CN209145582U (en) * | 2018-11-15 | 2019-07-23 | 西南石油大学 | Coarse crack liquid-solid two-phase Radial Flow visual Simulation experimental provision |
| CN110469311A (en) * | 2019-08-28 | 2019-11-19 | 赣江新区澳博颗粒科技研究院有限公司 | The coarse fracture network visualization device of dynamic expansion under the conditions of a kind of simulation confining pressure |
| CN111504872A (en) * | 2020-04-16 | 2020-08-07 | 武汉大学 | Variable-opening detachable simulated crack test device and test method |
| CN111811995A (en) * | 2020-07-17 | 2020-10-23 | 中国地质大学（北京） | Visual test method and system for simulating coarse single-cross fracture multiphase seepage |
| CN112595644A (en) * | 2020-11-19 | 2021-04-02 | 昆明理工大学 | Model device and method for simulating rough and fluctuant crack surface and crack opening degree of rock mass |
| CN112649282A (en) * | 2020-12-30 | 2021-04-13 | 中国科学院武汉岩土力学研究所 | Method for inducing fault/crack activation under simulated stress disturbance condition |
| CN113533157A (en) * | 2021-07-02 | 2021-10-22 | 浙江大学 | Variable-opening detachable fracture device for visual experiment |
| CN114017069A (en) * | 2021-12-08 | 2022-02-08 | 河北工程大学 | Experimental method for simulating and analyzing grouting particle accumulation effect of fractured rock mass |
| CN114017070A (en) * | 2021-12-08 | 2022-02-08 | 河北工程大学 | Visualization device capable of being used for simulating grouting particle accumulation effect of fractured rock mass |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10689960B2 (en) * | 2015-11-19 | 2020-06-23 | Halliburton Energy Services, Inc. | Fracture network fluid flow simulation with systematic fracture orientation |
-
2022
- 2022-02-21 CN CN202210154686.4A patent/CN114518311B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105639989A (en) * | 2016-02-26 | 2016-06-08 | 殷昌（苏州）包装有限公司 | Vacuum pump cosmetic container |
| CN205941290U (en) * | 2016-07-15 | 2017-02-08 | 中国矿业大学 | Visual analog system of coarse fracture network seepage flow ration |
| CN108169457A (en) * | 2017-12-26 | 2018-06-15 | 山东大学 | A kind of visualization becomes aperture crack grouting rig for model test and application method |
| CN209145582U (en) * | 2018-11-15 | 2019-07-23 | 西南石油大学 | Coarse crack liquid-solid two-phase Radial Flow visual Simulation experimental provision |
| CN109883925A (en) * | 2019-03-27 | 2019-06-14 | 武汉大学 | The coarse crack of change aperture and preparation method thereof for visualized experiment |
| CN110469311A (en) * | 2019-08-28 | 2019-11-19 | 赣江新区澳博颗粒科技研究院有限公司 | The coarse fracture network visualization device of dynamic expansion under the conditions of a kind of simulation confining pressure |
| CN111504872A (en) * | 2020-04-16 | 2020-08-07 | 武汉大学 | Variable-opening detachable simulated crack test device and test method |
| CN111811995A (en) * | 2020-07-17 | 2020-10-23 | 中国地质大学（北京） | Visual test method and system for simulating coarse single-cross fracture multiphase seepage |
| CN112595644A (en) * | 2020-11-19 | 2021-04-02 | 昆明理工大学 | Model device and method for simulating rough and fluctuant crack surface and crack opening degree of rock mass |
| CN112649282A (en) * | 2020-12-30 | 2021-04-13 | 中国科学院武汉岩土力学研究所 | Method for inducing fault/crack activation under simulated stress disturbance condition |
| CN113533157A (en) * | 2021-07-02 | 2021-10-22 | 浙江大学 | Variable-opening detachable fracture device for visual experiment |
| CN114017069A (en) * | 2021-12-08 | 2022-02-08 | 河北工程大学 | Experimental method for simulating and analyzing grouting particle accumulation effect of fractured rock mass |
| CN114017070A (en) * | 2021-12-08 | 2022-02-08 | 河北工程大学 | Visualization device capable of being used for simulating grouting particle accumulation effect of fractured rock mass |
Non-Patent Citations (1)
| Title |
|---|
| 岩石断裂面曲折度影响下的粗糙单裂隙渗流规律;潘汝江;何翔;;辽宁工程技术大学学报(自然科学版);20200709(04);第17-22页 * |
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