CN217304821U - Visual test system for simulating multi-type single-crack grouting seepage - Google Patents
Visual test system for simulating multi-type single-crack grouting seepage Download PDFInfo
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Abstract
The utility model provides a visual test system of simulation polymorphic type single crack slip casting seepage flow, including water injection device, constant voltage gas injection device, the thick liquid jar, visual single crack seepage flow device, rotatory device and the computer of bearing, water injection device's delivery port passes through the water injection union coupling with the water filling port of thick liquid jar, the gas outlet of constant voltage gas injection device passes through the gas injection union coupling with the gas injection port of thick liquid jar, be provided with agitating unit in the thick liquid jar, visual single crack seepage flow device is installed on rotatory bearing device, the thick liquid export of thick liquid jar passes through the slip casting union coupling with visual single crack seepage flow device's slip casting mouth, be provided with the slip casting valve on the slip casting pipe, slurry flowmeter and slip casting pressure gauge, the computer respectively with visual single crack seepage flow device, slurry flowmeter and slip casting pressure gauge signal connection. The utility model discloses can truly accurately simulate the migration evolution process of thick liquid in the stratum crack, the overall process in the slip casting filling crack is filled to the more audio-visual observation, provides the platform for research slip casting shutoff stratum crack mechanism.
Description
Technical Field
The utility model relates to an engineering hydrodynamics test technical field, specific theory relates to a simulation polymorphic type list crack slip casting seepage visual test system.
Background
In mineral engineering, especially coal mining, under mining stress of a mining coal seam, even under superimposed stress of multi-coal seam mining, problems of mine pressure, gas, water burst and the like which accord with dynamic disasters are often caused. And the grouting has the functions of filling, reinforcing and reducing seepage. The high-pressure grouting is carried out on the broken rock mass in the coal seam overlying strata, and the cracks and the holes in the strata are subjected to grouting filling to form a firmer key layer, so that on one hand, harmful gas, water flow and the like from the upper part of the strata can be blocked, on the other hand, the rock cracks can be filled from the microcosmic aspect, the strength and the stability of the strata are improved, the working resistance of a support below is reduced, and the long-term stability of a roadway is realized.
However, in the current construction, the development state of the rock stratum fracture, the selection of grouting raw materials and the proportion of grout can greatly influence the grouting effect in the actual engineering, and the careless grouting can also aggravate the development of the rock stratum fracture, so that the collapse of a mine can be caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simulation polymorphic type list crack slip casting seepage visual test system, the utility model discloses migration evolution process of simulation thick liquid that can be true accurate in the rock stratum crack, the test result is closer to actual engineering than numerical simulation, and people also can be more audio-visual the overall process that the slip casting filled the crack, provides the platform of research for research slip casting shutoff rock stratum crack mechanism.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a visual test system for simulating multi-type single-crack grouting seepage comprises a water injection device, a constant-pressure gas injection device, a slurry tank, a visual single-crack seepage device, a rotary bearing device and a computer, wherein a water injection port and a gas injection port are formed in the top of the slurry tank, a slurry filling port with a sealing cover is formed in the upper side portion of the outer side wall of the slurry tank, a slurry outlet is formed in the bottom of the slurry tank, a water outlet of the water injection device is connected with the water injection port of the slurry tank through a water injection pipe, a gas outlet of the constant-pressure gas injection device is connected with the gas injection port of the slurry tank through a gas injection pipe, a stirring device is arranged in the slurry tank, the visual single-crack seepage device is installed on the rotary bearing device, the slurry outlet of the slurry tank is connected with the grouting port of the visual single-crack seepage device through a grouting pipe, and a grouting valve, a slurry flow meter and a grouting pipe are sequentially arranged on the grouting pipe along the liquid flowing direction, and the computer is respectively in signal connection with the visual single-fracture seepage device, the slurry flow meter and the grouting pressure meter.
The water injection device comprises a water tank, a water injection pump, a liquid flowmeter and a liquid pressure regulating valve, wherein a water outlet of the water tank is connected with a water inlet of the water injection pump through a water pumping pipe, a water outlet of the water injection pump is connected with a water injection port of the slurry tank through a water injection pipe, the liquid flowmeter and the liquid pressure regulating valve are sequentially arranged on the water injection pipe along the liquid flowing direction, and a computer is respectively in signal connection with the liquid flowmeter and the liquid pressure regulating valve.
The constant-pressure gas injection device comprises a gas pump, a pressure stabilizer, a gas flowmeter and a gas pressure regulating valve, wherein a gas outlet of the gas pump is connected with a gas injection port of the slurry tank through a gas injection pipe, the pressure stabilizer, the gas flowmeter and the gas pressure regulating valve are sequentially arranged on the gas injection pipe along the gas flowing direction, and a computer is respectively in signal connection with the gas flowmeter and the gas pressure regulating valve.
The visual single-crack seepage device comprises an acrylic cuboid block and a plurality of acrylic long slats, the acrylic cuboid block is horizontally arranged along the left-right direction, a cuboid crack channel which is through from left to right is arranged in the middle of the acrylic cuboid block along the left-right direction, a plurality of clamping strips which are arranged at intervals from front to back are uniformly formed on the front side part and the rear side part of the left end of the upper inner surface and the lower inner surface of the cuboid crack channel and the front side part and the rear side part of the right end of the upper inner surface and the lower inner surface of the cuboid crack channel, each clamping strip on the front side and each clamping strip on the rear side are respectively arranged in a one-to-one correspondence and front-to-back symmetry manner, a clamping groove for inserting the acrylic long slats is formed between every two adjacent clamping strips, the height of the acrylic long slats is the same as that of the crack channel, each acrylic long slat is vertically inserted into each corresponding clamping groove in the cuboid crack channel along the left-right direction, the lower surface middle part of the rectangular block of ya keli is seted up a plurality of and is controlled the interval setting and with the first through-hole of cuboid crack passageway intercommunication, screw interface is all installed in each first through-hole department, the screw interface connection that is left most has the thick liquid valve of arranging, pass through slip casting union coupling between the screw interface on the most right side and the thick liquid export of thick liquid jar, each screw interface connection in the middle has sampling valve or pressure sensor, the computer respectively with each pressure sensor signal connection.
The rotary bearing device comprises a rectangular steel frame, a bearing platform and a rotary disk, wherein the rectangular steel frame is horizontally arranged, the rectangular steel frame is formed by welding four square steel pipes end to end, the periphery of the bottom of the rectangular steel frame is fixedly supported on the ground through upright posts, the bearing platform is horizontally arranged in the rectangular steel frame and is a steel plate, the middle part of the front side and the middle part of the rear side of the bearing platform are both connected with rotating shafts horizontally arranged along the front and rear directions, the rotating shaft of the front side is rotatably connected to the steel pipe on the front side of the rectangular steel frame, the rotating shaft of the rear side is rotatably connected to the steel pipe on the rear side of the rectangular steel frame, the front end of the rotating shaft of the front side penetrates through the steel pipe on the front side of the rectangular steel frame, the rotary disk is vertically arranged along the left and right directions, the center of the rear side of the rotary disk is fixedly connected to the front end of the rotating shaft on the front side, angle scale lines are carved on the front side of the rotary disk, and a plurality of angle positioning holes are formed in a circumferential array on the rotary disk, the central angle between two adjacent angle locating holes is the same with the unit angle of angle scale mark, set up two on the front side steel pipe of rectangular steel frame about the interval and around the bolt hole of penetrating setting, left bolt hole corresponds about with left locating hole, the bolt hole on right side corresponds about with the locating hole on right side, all peg graft in the locating hole on left side and right side and have the locating pin, two locating pins correspond respectively and insert two bolt holes in, the middle part of plummer is the sunken integrated into one piece downwards has the cuboid recess the same with the cuboid block shape of ya keli cuboid, the cuboid block of ya keli inlays and establishes in the cuboid recess, the tank bottom middle part of cuboid recess is seted up the second through-hole of a plurality of and the upper and lower one-to-one correspondence of each first through-hole, each screw interface corresponds respectively downwards and passes each second through-hole.
By adopting the technical scheme, the visual test method for the single crack grouting seepage with variable width and roughness specifically comprises the following steps:
assembling the visual test system for simulating the multi-type single-fracture grouting seepage;
adding the slurry prepared according to the requirement into a slurry tank, and uniformly stirring by a stirring device;
thirdly, building a visual single-crack seepage device on the rotary bearing device according to the test requirements;
adjusting the inclination angle of the visual single-crack seepage device through the rotary bearing device;
injecting gas into the slurry tank through a constant-pressure gas injection device, so that the slurry in the slurry tank is injected into the visual single-crack seepage device, and observing and researching the migration process of the slurry;
and (VI) after the test is finished, cleaning the whole system through a water injection device and a constant-pressure gas injection device, so as to facilitate the next test.
The step (II) is specifically as follows: and opening the sealing cover, adding the slurry configured as required into the slurry tank through the slurry filling port, starting the stirring device to stir the slurry, preventing the slurry from depositing, starting the air pump, and setting the gas injection pressure to be higher than the required grouting pressure through the gas pressure regulating valve.
The step (III) is specifically as follows: selecting a corresponding number of acrylic strip plates according to the width of a crack required by a test, pasting a plurality of alloy sheets which are spaced from left to right on one side surface of the corresponding acrylic strip plate according to the roughness of the crack required by the test, forming protrusions with equal intervals for simulating rough cracks, and sequentially inserting the selected acrylic strip plates into corresponding clamping grooves corresponding to left and right in a cuboid crack channel from front and back sides of the cuboid crack channel in a middle arrangement mode to form the crack required by the test, wherein the one side surface of the acrylic strip plate pasted with the alloy sheets is used as the side surface of the right end of the crack, the left end and the right end of the cuboid crack channel are sealed by rubber films at the left end and the right end of the acrylic cuboid block, and the acrylic cuboid block is embedded in a cuboid groove at the middle part of a bearing table, and all the screw interfaces respectively penetrate through the second through holes one by one, then the screw interface at the leftmost side is connected with the slurry discharge valve, the screw interface at the rightmost side is connected with the slurry outlet of the slurry tank through a slurry injection pipe, and each screw interface in the middle is connected with a sampling valve or a pressure sensor according to the test requirement.
The step (IV) is specifically as follows: rotate the rotary disk to required angle, make the loading board drive the rectangular block of ya keli and rotate and transfer to required angle, use two locating pins to peg graft respectively in the locating hole on left side and right side again to two locating pins correspond respectively and insert two bolt holes, fix the rotary disk, so that carry out the crack seepage flow test under the different inclination.
The step (V) is specifically as follows: opening a grouting valve and a slurry discharging valve, injecting the slurry in a slurry tank into a crack in an acrylic cuboid block through a grouting pipe under the action of grouting pressure, carrying out seepage migration of the slurry in the crack from right to left, and discharging the slurry from the crack through the slurry discharging valve, so that the migration process of the slurry can be observed, if the pressure of the slurry in the seepage migration process needs to be measured, connecting each screw interface in the middle with a pressure sensor, respectively connecting a computer with each pressure sensor in a signal connection mode, monitoring the pressure value of the slurry in the seepage migration process in real time by each pressure sensor, monitoring the flow of the slurry in real time by a slurry flowmeter, analyzing and processing the pressure value and the flow of the slurry in the seepage migration process by the computer, further measuring the pressure change rule of the slurry in the seepage migration process, and sampling the slurry if necessary, then each screw interface in the middle just connects the sampling valve, through the sampling valve take a sample can, wherein can make the stable gas pressure that keeps in the plasma tank at the gas injection pressure of settlement through stabiliser and gas air-vent valve to realize the constant pressure slip casting function in the test process.
The step (six) is specifically as follows: after the test is finished, the grouting valve and the air pump are closed, the water injection pump is started, the water in the water tank is injected into the grout tank through the water injection pipe by the water injection pump to form a certain amount of clean water, then the water injection pump is closed, the stirring device stirs the clean water to further clean the interior of the grout tank, then the grouting valve and the air pump are opened, the clean water in the grout tank is injected into the cracks in the acrylic cuboid blocks through the grouting pipe and is completely discharged through the grout discharge valve, meanwhile, the air pump also completely blows out the residual clean water in the grouting pipe to avoid influencing the components of the grout in the next grouting test, the clean water can clean the grouting pipe and the interior of the cracks in the flowing process of the grouting pipe and the cracks, then the grouting valve and the air pump are closed, the water injection pump is started, the water in the water tank is injected into the grout tank through the water injection pipe by the water injection pump to form a certain amount of clean water, then the water injection pump is closed, the stirring device stirs the clean water to further clean the interior of the grout tank, and then opening the grouting valve and the air pump, injecting clean water in the grout tank into the cracks in the acrylic cuboid block through the grouting pipe and discharging all the clean water through the grout discharging valve, simultaneously blowing out all the residual clean water in the grouting pipe by the air pump, avoiding influencing grout components in the next grouting test, cleaning the grouting pipe and the cracks by the clean water in the flowing process in the grouting pipe and the cracks, repeating the operation for multiple times, cleaning the whole system and facilitating the next test.
The utility model discloses relative prior art has substantive characteristics and progress, specifically speaking, the utility model has the following beneficial effect:
(1) the utility model can realize the visual detection of the whole process of dynamic migration of the slurry in the process of grouting the cracks with different widths and different roughness, thereby exploring and analyzing the migration evolution law of the slurry in the cracks with different working conditions and obtaining a large amount of grouting seepage simulation test data;
(2) the method can be used for researching the coagulation and deposition rules of slurries with different materials and different proportions in the flowing process, and can provide effective and reliable parameters for numerical simulation of the engineering problems;
(3) this test is with low costs, and the cycle is short, and test system easy operation, the work load is little, can save a large amount of manpower and materials, through the utility model discloses can truly accurately simulate the migration evolution process of thick liquid in the rock stratum crack, the test result is closer to actual engineering than numerical simulation, and people also can be more audio-visual the overall process that the slip casting filled the crack, provides the platform for studying slip casting shutoff rock stratum crack mechanism.
Drawings
FIG. 1 is a schematic diagram of the visual test system for simulating multi-type single-crack grouting seepage of the utility model.
Fig. 2 is a schematic axial view of the single-slit visualized seepage device of the present invention.
Fig. 3 is a schematic bottom view of the single-slit visualized seepage device of the present invention.
Fig. 4 is a left side view of the visual single-fracture seepage device of the present invention.
Fig. 5 is a schematic structural view of the acrylic strip plate without gold flakes adhered thereto.
Fig. 6 is a schematic structural view of the acrylic strip plate to which the alloy sheet is attached according to the present invention.
Figure 7 is a front view of the rotary load bearing device of the present invention.
Fig. 8 is a top view of the assembly of the rotary bearing device and the acrylic cuboid block.
Fig. 9 is a sectional view taken along line a-a in fig. 8.
Detailed Description
The embodiments of the present invention will be further explained with reference to the drawings.
As shown in fig. 1-9, a visual test system for simulating multi-type single-crack grouting seepage comprises a water injection device, a constant-pressure gas injection device, a slurry tank 1, a visual single-crack seepage device 37, a rotary bearing device and a computer 2, wherein the top of the slurry tank 1 is provided with a water injection port 3 and a gas injection port 4, the upper side part of the outer side wall of the slurry tank 1 is provided with a slurry filling port 5 with a sealing cover, the bottom of the slurry tank 1 is provided with a slurry outlet 6, the water outlet of the water injection device is connected with the water injection port 3 of the slurry tank 1 through a water injection pipe 7, the gas outlet of the constant-pressure gas injection device is connected with the gas injection port 4 of the slurry tank 1 through a gas injection pipe 8, the slurry tank 1 is internally provided with a stirring device 9, the visual single-crack seepage device 37 is mounted on the rotary bearing device, the slurry outlet 6 of the slurry tank 1 is connected with the grouting port of the visual single-crack seepage device 37 through a grouting pipe 10, the grouting pipe 10 is sequentially provided with a grouting valve 11, a slurry flowmeter 12 and a grouting pressure gauge 13 along the liquid flowing direction, and the computer 2 is respectively in signal connection with the visual single-crack seepage device 37, the slurry flowmeter 12 and the grouting pressure gauge 13.
The water injection device comprises a water tank 14, a water injection pump 15, a liquid flowmeter 16 and a liquid pressure regulating valve 17, wherein a water outlet of the water tank 14 is connected with a water inlet of the water injection pump 15 through a water pumping pipe 18, a water outlet of the water injection pump 15 is connected with a water injection port 3 of the slurry tank 1 through a water injection pipe 7, the liquid flowmeter 16 and the liquid pressure regulating valve 17 are sequentially arranged on the water injection pipe 7 along the liquid flowing direction, and the computer 2 is respectively in signal connection with the liquid flowmeter 16 and the liquid pressure regulating valve 17.
The constant-pressure gas injection device comprises a gas pump 19, a pressure stabilizer 20, a gas flowmeter 21 and a gas pressure regulating valve 22, wherein a gas outlet of the gas pump 19 is connected with a gas injection port 4 of the slurry tank 1 through a gas injection pipe 8, the pressure stabilizer 20, the gas flowmeter 21 and the gas pressure regulating valve 22 are sequentially arranged on the gas injection pipe 8 along the gas flow direction, and the computer 2 is respectively in signal connection with the gas flowmeter 21 and the gas pressure regulating valve 22.
The visual single-crack seepage device 37 comprises an acrylic cuboid block 23 and a plurality of acrylic strip plates 24, wherein the acrylic cuboid block 23 is horizontally arranged along the left-right direction, a cuboid crack channel 25 which is through from left to right is arranged in the middle of the acrylic cuboid block 23 along the left-right direction, a plurality of clamping strips 26 which are arranged at intervals from front to back are uniformly formed on the front side part and the rear side part of the left end of the upper inner surface and the lower inner surface of the cuboid crack channel 25 and the front side part and the rear side part of the right end of the upper inner surface and the lower inner surface of the cuboid crack channel 25, each clamping strip 26 on the front side and each clamping strip 26 on the rear side are respectively arranged in a one-to-one correspondence and symmetrical manner from front to back, a clamping groove for inserting the acrylic strip plate 24 is formed between two adjacent clamping strips 26, the height of the acrylic strip plate 24 is the same as that of the cuboid crack channel 25, each acrylic strip plate 24 is respectively inserted into each clamping groove corresponding to left and right along the left direction in the cuboid crack channel 25 in a vertical correspondence, the lower surface middle part of rectangular block 23 of ya keli sets up the interval about a plurality of and the first through-hole 27 that communicates with cuboid crack passageway 25, screw interface is all installed to each first through-hole 27 department, leftmost screw interface connection has the mud valve of arranging, be connected through slip casting pipe 10 between the screw interface on rightmost side and the thick liquid export 6 of thick liquid jar 1, each screw interface connection in the middle of has sampling valve or pressure sensor, computer 2 respectively with each pressure sensor signal connection.
The rotary bearing device comprises a rectangular steel frame 28, a bearing table 29 and a rotary disc 30, wherein the rectangular steel frame 28 is horizontally arranged, the rectangular steel frame 28 is formed by welding four square steel pipes end to end, the periphery of the bottom of the rectangular steel frame 28 is fixedly supported on the ground through upright posts 31, the bearing table 29 is horizontally arranged in the rectangular steel frame 28, the bearing table 29 is a steel plate, the middle part of the front side edge and the middle part of the rear side edge of the bearing table 29 are both connected with rotating shafts 32 horizontally arranged along the front-rear direction, the rotating shafts 32 of the front side are rotatably connected on the front side steel pipes of the rectangular steel frame 28, the rotating shafts 32 of the rear side are rotatably connected on the rear side steel pipes of the rectangular steel frame 28, the front ends of the rotating shafts 32 of the front side penetrate through the front side steel pipes of the rectangular steel frame 28, the rotary disc 30 is vertically arranged along the left-right direction, the center of the rear side surface of the rotary disc 30 is fixedly connected at the front ends of the rotating shafts 32 of the front side, an angle scale mark 33 is carved on the front side surface of the rotating disc 30, a plurality of angle positioning holes 34 arranged in a circumferential array are arranged on the rotating disc 30, the central angle between two adjacent angle positioning holes 34 is the same as the unit angle of the angle scale mark 33, two bolt holes which are arranged at left and right intervals and are through in the front and back are arranged on a steel pipe on the front side of the rectangular steel frame 28, the bolt hole on the left side corresponds to the positioning hole on the left side in the left and right sides, the bolt hole on the right side corresponds to the positioning hole on the right side in the left and right sides, positioning pins 35 are inserted into the positioning holes on the left and right sides respectively, two positioning pins 35 are inserted into the two bolt holes respectively, a rectangular groove which is the same as the acrylic rectangular block 23 in shape is integrally formed in the middle of the bearing table 29 in a downward concave manner, the acrylic rectangular block 23 is embedded into the rectangular groove, a plurality of second through holes 36 which are one-to-one corresponding to-one from top to-bottom of each first through hole 27 are arranged in the middle of the rectangular groove, the screw ports respectively penetrate through the second through holes 36 one by one.
By adopting the technical scheme, the visual test method for the single crack grouting seepage with variable width and roughness specifically comprises the following steps:
assembling the visual test system for simulating the multi-type single-fracture grouting seepage;
adding the slurry prepared according to the requirement into the slurry tank 1, and uniformly stirring by a stirring device 9;
thirdly, a visual single-crack seepage device 37 is set up on the rotary bearing device according to the test requirements;
fourthly, adjusting the inclination angle of the visual single-fracture seepage device 37 through a rotary bearing device;
injecting gas into the slurry tank 1 through a constant-pressure gas injection device, so that the slurry in the slurry tank 1 is injected into the visual single-crack seepage device 37, and observing and researching the migration process of the slurry;
and (VI) after the test is finished, cleaning the whole system through a water injection device and a constant-pressure gas injection device, so as to facilitate the next test.
The step (II) is specifically as follows: the sealing cover is opened, the slurry prepared according to the requirement is added into the slurry tank 1 through the slurry filling port 5, the stirring device 9 is started to stir the slurry to prevent the slurry from depositing, the air pump 19 is started, and the air injection pressure is set to be higher than the required grouting pressure through the air pressure regulating valve 22.
The step (III) is specifically as follows: selecting a corresponding number of acrylic strip plates 24 according to the crack width required by the test, pasting a plurality of alloy sheets 38 which are spaced from left to right on one side surface of the corresponding acrylic strip plate 24 according to the crack roughness required by the test, forming protrusions with equal intervals for simulating rough cracks, and sequentially inserting the selected acrylic strip plates 24 into corresponding slots corresponding to left and right in a cuboid crack channel 25 from the front side and the back side of the cuboid crack channel 25 to form cracks required by the test, wherein one side surface of the acrylic strip plate 24 pasted with the alloy sheets 38 is used as the side surface of the crack, and then the left end and the right end of the acrylic cuboid block 23 are wrapped with rubber films to plug the left end and the right end of the crack channel 25, and then, the acrylic cuboid block 23 is embedded in a cuboid groove in the middle of the bearing table 29, so that the screw interfaces respectively penetrate through the second through holes 36 one by one, the leftmost screw interface is connected with the slurry discharge valve, the rightmost screw interface is connected with the slurry outlet 6 of the slurry tank 1 through the grouting pipe 10, and each screw interface in the middle is connected with a sampling valve or a pressure sensor according to test requirements.
The step (IV) is specifically as follows: rotate rotary disk 30 to required angle, make the loading board drive the rectangular cuboid block 23 of ya keli and rotate and transfer to required angle, use two locating pins 35 to peg graft respectively in the locating hole on left side and right side to two locating pins 35 correspond respectively and insert two bolt holes, fix rotary disk 30, so that carry out the crack seepage flow test under the different inclination.
The step (V) is specifically as follows: opening a grouting valve 11 and a slurry discharging valve, injecting the slurry in a slurry tank 1 into a crack in an acrylic cuboid block 23 through a grouting pipe 10 under the action of pressure injection pressure, carrying out seepage migration of the slurry in the crack from right to left, and discharging the slurry from the crack through the slurry discharging valve, so that the migration process of the slurry can be observed, if the pressure of the slurry in the seepage migration process needs to be measured, connecting each screw interface in the middle with a pressure sensor, respectively connecting a computer 2 with each pressure sensor in a signal connection mode, monitoring the pressure value of the slurry in the seepage migration process in real time by each pressure sensor, monitoring the flow of the slurry in real time by a slurry flowmeter 12, analyzing and processing the pressure value and the flow of the slurry in the seepage migration process by the computer 2, and further measuring the pressure change rule of the slurry in the seepage migration process, if need take a sample to the thick liquid, then each screw interface in the middle just connects the sampling valve, take a sample through the sampling valve can, wherein can make the stable gas pressure that keeps in the gas injection pressure of settlement in the thick liquid jar 1 through stabiliser 20 and gas air-vent valve 22 to realize constant pressure slip casting function in the experimentation.
The step (six) is specifically as follows: after the test is finished, the grouting valve 11 and the air pump 19 are closed, the water injection pump 15 is started, the water injection pump 15 injects a certain amount of clear water into the slurry tank 1 through the water injection pipe 7 by using water in the water tank 14, then the water injection pump 15 is closed, the stirring device 9 stirs the clear water to further clean the inside of the slurry tank 1, then the grouting valve 11 and the air pump 19 are opened, the clear water in the slurry tank 1 is injected into the cracks in the acrylic cuboid block 23 through the grouting pipe 10 and is completely discharged through the slurry discharge valve, meanwhile, the air pump 19 also completely blows out the residual clear water in the grouting pipe 10, the influence on the slurry components in the next grouting test is avoided, the clear water can clean the grouting pipe 10 and the inside of the cracks in the flowing process of the grouting pipe 10 and the cracks, then the grouting valve 11 and the air pump 19 are closed, the water injection pump 15 is started, the water injection pump 15 injects a certain amount of clear water into the slurry tank 1 through the water injection pipe 7 by using water in the water tank 14, then close water injection pump 15, agitating unit 9 stirs the clear water and then washs the inside of thick liquid jar 1, reopen slip casting valve 11 and air pump 19, pour into the crack in ya keli cuboid block 23 and all discharge through arranging the thick liquid valve with the clear water in the thick liquid jar 1 through slip casting pipe 10, air pump 19 also blows off the remaining clear water in the slip casting pipe 10 is whole simultaneously, avoid influencing the thick liquid composition when slip casting is experimental next time, the clear water can be to slip casting pipe 10 and the inside washing of crack in slip casting pipe 10 and the crack flow process, repeat above-mentioned operation so many times, wash whole system, be convenient for next test.
Sealed lid, screw interface, thick liquid valve, sample valve, pressure sensor and bolt hole are all not shown in the picture, and agitating unit 9 is current conventional technique, and concrete structure and theory of operation are no longer repeated, the utility model provides a control part is conventional technique, does not relate to new computer program.
The fracture with the maximum width required by the test is the cuboid fracture channel 25 into which the acrylic strip plate 24 is not inserted, and the width of the cavity inside the cuboid fracture channel 25 can be changed by inserting different numbers of acrylic strip plates 24, so that fractures with different widths are obtained.
The utility model discloses following beneficial effect has:
(1) the utility model can realize the visual detection of the whole process of dynamic migration of the slurry in the process of grouting the cracks with different widths and different roughness, thereby exploring and analyzing the migration evolution law of the slurry in the cracks with different working conditions and obtaining a large amount of grouting seepage simulation test data;
(2) the method can be used for researching the coagulation and deposition rules of slurries with different materials and different proportions in the flowing process, and can provide effective and reliable parameters for numerical simulation of the engineering problems;
(3) this test cost is low, and the cycle is short, and test system easy operation, the work load is little, can save a large amount of manpower and materials, through the utility model discloses migration evolution process of simulation thick liquid that can be true accurate in the stratum crack, the test result is more close actual engineering than numerical simulation, and people also can be more audio-visual the overall process that the slip casting filled the crack, and the platform of research is provided for studying slip casting shutoff stratum crack mechanism.
The above embodiments are only used for illustrating but not limiting the technical solution of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that; modifications and equivalents of the present invention may be made without departing from the spirit and scope of the invention, which is intended to be covered by the appended claims.
Claims (5)
1. The utility model provides a visual test system of single crack slip casting seepage flow of simulation polymorphic type which characterized in that: the device comprises a water injection device, a constant-pressure gas injection device, a slurry tank, a visual single-crack seepage device, a rotary bearing device and a computer, wherein a water injection port and a gas injection port are arranged at the top of the slurry tank, a slurry filling port with a sealing cover is arranged at the upper side part of the outer side wall of the slurry tank, a slurry outlet is arranged at the bottom of the slurry tank, a water outlet of the water injection device is connected with the water injection port of the slurry tank through a water injection pipe, a gas outlet of the constant-pressure gas injection device is connected with the gas injection port of the slurry tank through a gas injection pipe, a stirring device is arranged in the slurry tank, the visual single-crack seepage device is arranged on the rotary bearing device, the slurry outlet of the slurry tank is connected with the grouting port of the visual single-crack seepage device through a grouting pipe, a grouting valve, a slurry flowmeter and a grouting pressure gauge are sequentially arranged on the grouting pipe along the liquid flowing direction, and the computer is respectively connected with the visual single-crack seepage device, The slurry flowmeter is in signal connection with the grouting pressure gauge.
2. The visual test system for simulating the multi-type single-fracture grouting seepage of claim 1, wherein: the water injection device comprises a water tank, a water injection pump, a liquid flowmeter and a liquid pressure regulating valve, wherein a water outlet of the water tank is connected with a water inlet of the water injection pump through a water pumping pipe, a water outlet of the water injection pump is connected with a water injection port of the slurry tank through a water injection pipe, the liquid flowmeter and the liquid pressure regulating valve are sequentially arranged on the water injection pipe along the liquid flowing direction, and a computer is respectively in signal connection with the liquid flowmeter and the liquid pressure regulating valve.
3. The visual test system for simulating the multi-type single-fracture grouting seepage of claim 1, wherein: the constant-pressure gas injection device comprises a gas pump, a pressure stabilizer, a gas flowmeter and a gas pressure regulating valve, wherein a gas outlet of the gas pump is connected with a gas injection port of the slurry tank through a gas injection pipe, the pressure stabilizer, the gas flowmeter and the gas pressure regulating valve are sequentially arranged on the gas injection pipe along the gas flowing direction, and a computer is respectively in signal connection with the gas flowmeter and the gas pressure regulating valve.
4. The visual test system for simulating the multi-type single-fracture grouting seepage of claim 1, wherein: the visual single-crack seepage device comprises an acrylic cuboid block and a plurality of acrylic elongated plates, wherein the acrylic cuboid block is horizontally arranged along the left-right direction, a cuboid crack channel which is transparent left and right is arranged in the middle of the acrylic cuboid block along the left-right direction, a plurality of clamping strips which are arranged at intervals front and back are uniformly formed on the front side part and the back side part of the left end of the inner upper surface and the lower surface of the cuboid crack channel and the front side part and the back side part of the right end of the inner upper surface and the lower surface of the cuboid crack channel, each clamping strip on the front side and each clamping strip on the back side are respectively arranged in a one-to-one correspondence front-to-back symmetry manner, a clamping groove for splicing the acrylic elongated plates is formed between every two adjacent clamping strips, the height of the acrylic elongated plates is the same as that of the cuboid crack channel, each acrylic elongated plate is vertically and correspondingly inserted into each corresponding clamping groove left and right in the cuboid crack channel along the left-right direction, the lower surface middle part of the rectangular block of ya keli is seted up a plurality of and is controlled the interval setting and with the first through-hole of cuboid crack passageway intercommunication, screw interface is all installed in each first through-hole department, the screw interface connection that is left most has the thick liquid valve of arranging, pass through slip casting union coupling between the screw interface on the most right side and the thick liquid export of thick liquid jar, each screw interface connection in the middle has sampling valve or pressure sensor, the computer respectively with each pressure sensor signal connection.
5. The visual test system for simulating multi-type single-fracture grouting seepage according to claim 4, characterized in that: the rotary bearing device comprises a rectangular steel frame, a bearing platform and a rotary disk, wherein the rectangular steel frame is horizontally arranged, the rectangular steel frame is formed by welding four square steel pipes end to end, the periphery of the bottom of the rectangular steel frame is fixedly supported on the ground through upright posts, the bearing platform is horizontally arranged in the rectangular steel frame and is a steel plate, the middle part of the front side and the middle part of the rear side of the bearing platform are both connected with rotating shafts horizontally arranged along the front and rear directions, the rotating shaft of the front side is rotatably connected to the steel pipe on the front side of the rectangular steel frame, the rotating shaft of the rear side is rotatably connected to the steel pipe on the rear side of the rectangular steel frame, the front end of the rotating shaft of the front side penetrates through the steel pipe on the front side of the rectangular steel frame, the rotary disk is vertically arranged along the left and right directions, the center of the rear side of the rotary disk is fixedly connected to the front end of the rotating shaft on the front side, angle scale lines are carved on the front side of the rotary disk, and a plurality of angle positioning holes are formed in a circumferential array on the rotary disk, the central angle between two adjacent angle locating holes is the same with the unit angle of angle scale mark, set up two on the front side steel pipe of rectangular steel frame and control the bolt hole that the interval and front and back penetrating set up, left bolt hole corresponds about with left locating hole, the bolt hole on right side corresponds about with the locating hole on right side, all peg graft in the locating hole on left side and right side and have the locating pin, two locating pins correspond respectively and insert two bolt holes, the middle part of plummer is the downwardly concave integrated into one piece have with the cuboid recess that ya keli cuboid block shape is the same, the cuboid block of ya keli inlays and establishes in the cuboid recess, the second through-hole of a plurality of and the upper and lower one-to-one of each first through-hole is seted up at the tank bottom middle part of cuboid recess, each screw interface corresponds respectively downwards passes each second through-hole.
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| CN116481976A (en) * | 2023-06-21 | 2023-07-25 | 河北工业大学 | 3D printing variable-opening fractured rock mass grouting test system and method |
| CN116539813A (en) * | 2023-05-25 | 2023-08-04 | 西南石油大学 | Wall roughness adjustable fissure medium microorganism mineralization shutoff model and device |
| WO2023160725A1 (en) * | 2022-05-20 | 2023-08-31 | 河南理工大学 | Visualized test method which is for single fracture grouting seepage and in which width and roughness are variable |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023160725A1 (en) * | 2022-05-20 | 2023-08-31 | 河南理工大学 | Visualized test method which is for single fracture grouting seepage and in which width and roughness are variable |
| CN116539813A (en) * | 2023-05-25 | 2023-08-04 | 西南石油大学 | Wall roughness adjustable fissure medium microorganism mineralization shutoff model and device |
| CN116539813B (en) * | 2023-05-25 | 2024-04-09 | 西南石油大学 | Wall roughness adjustable crack medium microorganism mineralization shutoff model device |
| CN116481976A (en) * | 2023-06-21 | 2023-07-25 | 河北工业大学 | 3D printing variable-opening fractured rock mass grouting test system and method |
| CN116481976B (en) * | 2023-06-21 | 2023-09-26 | 河北工业大学 | 3D printing variable-opening fractured rock mass grouting test system and method |
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