CN212272284U - Multifunctional physical simulation experiment device for gas extraction drilling - Google Patents
Multifunctional physical simulation experiment device for gas extraction drilling Download PDFInfo
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- CN212272284U CN212272284U CN202021298620.5U CN202021298620U CN212272284U CN 212272284 U CN212272284 U CN 212272284U CN 202021298620 U CN202021298620 U CN 202021298620U CN 212272284 U CN212272284 U CN 212272284U
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Abstract
The utility model discloses a multifunctional physical simulation experiment device for gas extraction drilling, which comprises a main box body, loading modules, a gas-liquid filling module and a monitoring module, wherein each loading module comprises three groups of loading elements and three composite supporting plates, and the directions of the three groups of loading elements for applying loads are vertical to each other; the gas-liquid filling module can fill liquid and gas into similar materials. During the experiment, similar materials are filled in the main box body, water is filled into the similar materials through the gas-liquid filling module according to the stratum water content condition, the similar materials are loaded from three directions through the loading module, the pressure in the main box body is kept stable through the gas-liquid filling module, then the simulated extraction is carried out, and the damage process and the drilling life cycle parameters inside the similar materials in the experiment process are monitored through the monitoring module.
Description
Technical Field
The utility model relates to a coal seam gas is taken out and is adopted experimental facilities technical field, especially relates to a multi-functional physical simulation experimental apparatus of gas is taken out and is adopted drilling.
Background
Coal mine gas is one of main disasters for coal mine safety production and is clean energy. In recent years, with the increase of mining depth, gas disasters become more and more main factors influencing the safety production of coal mines, and gas extraction is a fundamental method for preventing and treating the gas disasters of mines.
Due to the fact that the coal seam is not perspective, the influence of the drill holes on a fracture structure in the coal seam cannot be visually observed in actual production, and therefore the arrangement distance and the drilling parameters among the extraction drill holes are difficult to accurately set, and the defects of hole string, unreasonable drill hole spacing and the like easily occur. At present, most mines enter a deep mining stage, pressure-relief and permeability-increasing drill holes such as hydraulic cutting, hydraulic cave building and gas phase pre-splitting are widely applied, the application effects of different pressure-relief and permeability-increasing measures are different under different geological conditions, if the influence effect of the pressure-relief and permeability-increasing measures on coal and rock masses cannot be accurately mastered, the arrangement construction is carried out simply by experience, the effect of twice the effort can be generated, and even the possibility of inducing rock burst can be caused. Most of the existing drilling simulation experiment devices for laboratories adopt a pressure head to directly load coal bodies, defects of uneven pressurization, crack generation and the like can occur, accurate triaxial loading can not be realized mostly, a corresponding monitoring method is relatively backward, and the accuracy and the reliability of experiment results are reduced.
Therefore, how to change the current situation that the coal body is unevenly pressurized and cracks are easily generated when the drilling simulation experiment device pressurizes the coal body in the prior art becomes a problem to be solved by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a multi-functional physical simulation experimental apparatus of gas drainage drilling to solve the problem that above-mentioned prior art exists, make simulation experiment device can stabilize the pressurization to the coal body, improve the experiment degree of accuracy.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides a multifunctional physical simulation experiment device for gas extraction drilling, which comprises a main box body, a loading module, a gas-liquid filling module and a monitoring module, wherein similar materials to be tested can be contained in the main box body, the main box body is provided with a box opening and a movable baffle plate, the box opening is communicated with an inner cavity of the main box body, the movable baffle plate is detachably connected with the main box body, and the movable baffle plate is arranged at the box opening; the loading modules comprise loading elements and composite supporting plates, the loading elements can apply loads to the composite supporting plates, the direction of the loads applied by the loading elements is perpendicular to the composite supporting plates, similar materials to be tested are located in a cavity defined by the composite supporting plates and the inner walls of the main box body, the number of the loading modules is three, and the directions of the loads applied by the three groups of the loading elements are perpendicular to each other in pairs; the gas-liquid filling module is communicated with an inner cavity of the main box body, the gas-liquid filling module can fill liquid and gas into similar materials, and the monitoring module can monitor parameters of a damage process and a drilling life cycle of the similar materials in an experiment process.
Preferably, the loading module further comprises a housing, the loading element is arranged in the housing, the housing is detachably connected with the main box body, an inner cavity of the housing is communicated with an inner cavity of the main box body, the loading element is loaded by hydraulic pressure, the loading element comprises a hydraulic cylinder, a hydraulic rod and a hydraulic head, the hydraulic cylinder is arranged on the housing, one end of the hydraulic rod is slidably connected with the hydraulic cylinder, the other end of the hydraulic rod is connected with the hydraulic head, the hydraulic rod can drive the hydraulic head to reciprocate, the hydraulic head can abut against the composite support plate, and a pressure displacement sensor is further arranged at a joint of the hydraulic rod and the hydraulic head;
a dustproof baffle is further arranged in the shell and arranged between the hydraulic cylinder and the hydraulic head, and the hydraulic rod can slidably penetrate through the dustproof baffle;
in each group of loading modules, the number of the loading elements is four, the four groups of loading elements are parallel, and the connecting lines are rectangular.
Preferably, three compound support plates are two by two offset and two by two perpendicular settings mutually, compound support plate's volume can be compressed under the pressure effect of two in addition compound support plate.
Preferably, the composite support plate is of a split structure, the composite support plate comprises main support plates and connecting plates, the connecting plates are slidably connected with the main support plates, the number of the main support plates and the number of the connecting plates are four, and the connecting plates can be connected with the adjacent main support plates;
the main supporting plate is provided with a sliding groove, the connecting plate is provided with a protruding part, the protruding part is slidably arranged in the sliding groove, an elastic piece is further arranged between the protruding part and the sliding groove, and the deformation direction of the elastic piece is parallel to the relative sliding direction of the protruding part and the sliding groove; the guide groove and the guide strip are arranged between the main support plate and the connecting plate, the guide strip is arranged on the connecting plate, the guide groove is positioned on the main support plate, the guide strip is slidably arranged on the guide groove, and the relative sliding direction of the guide strip and the guide groove is parallel to the relative sliding direction of the sliding groove and the protruding part.
Preferably, an inner support plate is arranged on one side, far away from the loading element, of the composite support plate, and the area of the inner support plate is smaller than that of the composite support plate.
Preferably, the gas-liquid filling module comprises a liquid storage tank, a gas storage bottle and a filling rod, the filling rod is of a hollow tubular structure, one end of the filling rod is communicated with the liquid storage tank and the gas storage bottle through a pipeline, and the other end of the filling rod extends into the inner cavity of the main box body; a flow sensor is arranged between the liquid storage tank and the filling rod, and a pressure sensor is arranged between the gas storage bottle and the filling rod.
Preferably, the injection rod is provided with a plurality of groups of small holes, the number of each group of small holes is a plurality, the plurality of groups of small holes are arranged at equal intervals along the axial direction of the injection rod, and the plurality of groups of small holes are arranged in a staggered manner.
Preferably, the movable baffle comprises an upper baffle, a middle baffle and a lower baffle which are arranged in parallel, the upper baffle and the lower baffle are the same in shape and are symmetrically arranged on two sides of the middle baffle, and the area of the middle baffle is smaller than that of the upper baffle and that of the lower baffle; the upper baffle, the middle baffle and the lower baffle are respectively connected with the main box body through bolts.
Preferably, the monitoring module comprises an acoustic emission monitoring unit, an ultrasonic monitoring unit and a simulation extraction unit.
The utility model discloses for prior art gain following technological effect: the utility model discloses a multifunctional physical simulation experiment device for gas extraction drilling, including a main box body, a loading module, a gas-liquid filling module and a monitoring module, wherein the main box body can contain similar materials to be tested, the main box body is provided with a box opening and a movable baffle plate, the box opening is communicated with an inner cavity of the main box body, the movable baffle plate is detachably connected with the main box body, and the movable baffle plate is arranged at the box opening; the loading modules comprise loading elements and composite supporting plates, the loading elements can apply loads to the composite supporting plates, the direction of the loads applied by the loading elements is perpendicular to the composite supporting plates, the similar materials to be tested are located in a cavity formed by the composite supporting plates and the inner walls of the main box body in a surrounding mode, the number of the loading modules is three, and the directions of the loads applied by the three groups of loading elements are perpendicular to each other in pairs; the gas-liquid filling module is communicated with an inner cavity of the main box body, the gas-liquid filling module can fill liquid and gas into similar materials, and the monitoring module can monitor the damage process and the drilling life cycle parameters inside the similar materials in the experiment process. When the device is used for carrying out experiments, similar materials are filled in the main box body, water is filled into the similar materials through the gas-liquid filling module according to the stratum water content condition, loads are applied to the similar materials from three directions through the loading module, the pressure in the main box body is kept stable through the gas-liquid filling module, then simulated extraction is carried out, and the monitoring module is used for monitoring the damage process and the drilling life cycle parameters inside the similar materials in the experiment process. The utility model discloses a multi-functional physical simulation experimental apparatus of gas drainage drilling utilizes gas-liquid filling module simulation coal body water content and gas pressure, and the loading module is by the even loading of three direction to similar material, improves the experimental result degree of accuracy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic structural view of the multifunctional physical simulation experiment device for gas extraction drilling of the utility model;
fig. 2 is a schematic diagram of a loading module of the multifunctional physical simulation experiment device for gas extraction drilling of the utility model;
fig. 3 is another schematic structural diagram of the loading module of the multifunctional physical simulation experiment device for gas extraction drilling of the utility model;
fig. 4 is a schematic diagram of a gas-liquid filling module of the multifunctional physical simulation experiment device for gas extraction drilling of the utility model;
FIG. 5 is a schematic connection diagram of the composite support plate of the multifunctional physical simulation experiment device for gas extraction drilling of the utility model;
FIG. 6 is a schematic structural view of the composite support plate of the multifunctional physical simulation experiment device for gas extraction drilling of the utility model;
fig. 7 is a schematic view of a monitoring module of the multifunctional physical simulation experiment device for gas extraction drilling of the utility model;
fig. 8 is a schematic structural diagram of the multifunctional physical simulation experiment device for gas extraction drilling at other angles;
the system comprises a main box body 1, an upper baffle 101, a middle baffle 102, a lower baffle 103, a base 104, a loading module 2, a shell 201, a hydraulic cylinder 202, a hydraulic rod 203, a hydraulic head 204, a pressure displacement sensor 205, a dustproof baffle 206, a gas-liquid filling module 3, a liquid storage tank 301, a gas storage bottle 302, a filling rod 303, a flow sensor 304, a pressure sensor 305, a high-pressure pump 306, a small hole 307, a monitoring module 4, an acoustic emission monitoring unit 401, an ultrasonic monitoring unit 402, a simulation extraction unit 403, a composite support plate 5, a main support plate 501, a connecting plate 502, a sliding groove 503, a protruding part 504, an elastic part 505, a guide strip 506, a guide groove 507 and an inner support plate 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a multi-functional physical simulation experimental apparatus of gas drainage drilling to solve the problem that above-mentioned prior art exists, make simulation experiment device can stabilize the pressurization to the coal body, improve the experiment degree of accuracy.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1-8, wherein fig. 1 is a schematic structural view of the multifunctional physical simulation experimental apparatus for gas extraction drilling of the present invention, fig. 2 is a schematic view of a loading module of the multifunctional physical simulation experimental apparatus for gas extraction drilling of the present invention, fig. 3 is another schematic structural view of the loading module of the multifunctional physical simulation experimental apparatus for gas extraction drilling of the present invention, fig. 4 is a schematic view of a gas-liquid filling module of the multifunctional physical simulation experimental apparatus for gas extraction drilling of the present invention, fig. 5 is a schematic view of a connection of a composite support plate of the multifunctional physical simulation experimental apparatus for gas extraction drilling of the present invention, fig. 6 is a schematic structural view of a composite support plate of the multifunctional physical simulation experimental apparatus for gas extraction drilling of the present invention, fig. 7 is a schematic view of a monitoring module of the multifunctional physical simulation experimental apparatus for gas extraction drilling of the present invention, fig. 8 is the utility model discloses a multifunctional physical simulation experiment device for gas drainage drilling's other angles's schematic structure diagram.
The utility model provides a multifunctional physical simulation experiment device for gas extraction drilling, which comprises a main box body 1, a loading module 2, a gas-liquid filling module 3 and a monitoring module 4, wherein similar materials to be tested can be contained in the main box body 1, the main box body 1 is provided with a box opening and a movable baffle plate, the box opening is communicated with the inner cavity of the main box body 1, the movable baffle plate is detachably connected with the main box body 1, and the movable baffle plate is arranged at the box opening; the loading modules 2 comprise loading elements and composite supporting plates 5, the loading elements can apply loads to the composite supporting plates 5, the direction of the loads applied by the loading elements is perpendicular to the composite supporting plates 5, similar materials to be tested are located in a cavity defined by the composite supporting plates 5 and the inner walls of the main box body 1, the number of the loading modules 2 is three, and the directions of the loads applied by the three groups of loading elements are perpendicular to each other; the gas-liquid filling module 3 is communicated with an inner cavity of the main box body 1, the gas-liquid filling module 3 can fill liquid and gas into similar materials, and the monitoring module 4 can monitor the damage process and the drilling life cycle parameters inside the similar materials in the experiment process.
Utilize the utility model discloses a multi-functional physical simulation experimental apparatus of gas drainage drilling, when testing, to filling similar material in the main tank body 1, according to the stratum moisture condition, utilize gas-liquid filling module 3 to add the water injection in to similar material, utilize loading module 2 to load the load from three direction to similar material, utilize gas-liquid filling module 3 to make 1 internal pressure of main tank body remain stable, simulate afterwards and take out, utilize monitoring module 4 to monitor the inside damage process of similar material and drilling life cycle's parameter in the experimentation. The utility model discloses a multi-functional physical simulation experimental apparatus of gas drainage drilling utilizes gas-liquid filling module 3 simulation coal body water content and gas pressure, and loading module 2 is by the even loading of three direction to similar material, improves the experimental result degree of accuracy.
Specifically, the loading module 2 further comprises a housing 201, a loading element is arranged in the housing 201, the housing 201 is detachably connected with the main box body 1, an inner cavity of the housing 201 is communicated with an inner cavity of the main box body 1, the loading element is loaded by hydraulic pressure, the loading element comprises a hydraulic cylinder 202, a hydraulic rod 203 and a hydraulic head 204, the hydraulic cylinder 202 is arranged on the housing 201, one end of the hydraulic rod 203 is slidably connected with the hydraulic cylinder 202, the other end of the hydraulic rod 203 is connected with the hydraulic head 204, the hydraulic rod 203 can drive the hydraulic head 204 to reciprocate, the hydraulic head 204 can be abutted against the composite support plate 5, and a pressure displacement sensor 205 is further arranged at the connection position of the hydraulic rod 203 and the hydraulic head 204; pneumatic cylinder 202, hydraulic stem 203 drive hydraulic ram 204 and exert load to composite support plate 5, and composite support plate 5 transmits the load for similar material, realizes the even, stable loading to similar material, improves experimental structure accuracy.
In order to prevent dust and other impurities from entering the hydraulic cylinder 202 to affect the normal operation of the hydraulic cylinder, a dust-proof baffle 206 is further arranged in the housing 201, the dust-proof baffle 206 is arranged between the hydraulic cylinder 202 and the hydraulic head 204, the hydraulic rod 203 slidably penetrates through the dust-proof baffle 206, and a through hole allowing the hydraulic rod 203 to pass through is formed in the dust-proof baffle 206.
In the present embodiment, in each group of loading modules 2, the number of the loading elements is four, and the four groups of loading elements are parallel and the connecting lines are rectangular, so that the loading is more uniform and stable.
More specifically, two of the three composite support plates 5 are abutted and two of the three composite support plates are vertically arranged, the volume of each composite support plate 5 can be compressed under the pressure action of the other two composite support plates 5, the volume of each composite support plate 5 can be compressed, and the composite support plates 5 are prevented from interfering when loading elements in three directions are loaded.
The composite supporting plate 5 is of a split structure, the composite supporting plate 5 comprises a main supporting plate 501 and connecting plates 502, the connecting plates 502 are slidably connected with the main supporting plate 501, the number of the main supporting plate 501 and the number of the connecting plates 502 are four, and the connecting plates 502 can be connected with the adjacent main supporting plates 501; the distance between two adjacent main backup pads 501 can be changed to connecting plate 502 and main backup pad 501 relative slip to this realization changes the purpose of composite support board 5 volume, and the gap between four main backup pads 501 is the cross, changes the relative position of main backup pad 501, connecting plate 502, can change composite support board 5's length of side, and when the loading element loading, two composite support board 5 can be compressed in addition, avoid composite support board 5 to influence the loading.
In order to enable the main support plate 501 and the connecting plate 502 to slide smoothly relative to each other, the main support plate 501 has a sliding slot 503, the connecting plate 502 has a protruding portion 504, the protruding portion 504 is slidably disposed in the sliding slot 503, an elastic member 505 is further disposed between the protruding portion 504 and the sliding slot 503, a deformation direction of the elastic member 505 is parallel to a relative sliding direction of the protruding portion 504 and the sliding slot 503, the elastic member 505 can be a spring, and the elastic member 505 is disposed to enable the connecting plate 502 to reset smoothly. Besides, a guide groove 507 and a guide bar 506 are further arranged between the main support plate 501 and the connecting plate 502, the guide bar 506 is arranged on the connecting plate 502, the guide groove 507 is located on the main support plate 501, the guide bar 506 is slidably arranged on the guide groove 507, the relative sliding direction of the guide bar 506 and the guide groove 507 is parallel to the relative sliding direction of the sliding groove 503 and the protruding portion 504, and the guide bar 506 and the guide groove 507 can limit the relative sliding direction of the connecting plate 502 and the main support plate 501 to avoid sliding dislocation.
In other embodiments of the present invention, the inner supporting plate 6 is disposed on the side of the composite supporting plate 5 away from the loading element, when the similar material is prevented from being filled, the similar material affects the relative sliding between the main supporting plate 501 and the connecting plate 502, the area of the inner supporting plate 6 is smaller than that of the composite supporting plate 5, and the inner supporting plate 6 is prevented from affecting the composite supporting plate 5 to be compressed.
Further, the gas-liquid filling module 3 comprises a liquid storage tank 301, a gas storage bottle 302 and a filling rod 303, the filling rod 303 is of a hollow tubular structure, one end of the filling rod 303 is communicated with the liquid storage tank 301 and the gas storage bottle 302 through a pipeline, the other end of the filling rod 303 extends into an inner cavity of the main tank body 1, water can be filled into the main tank body 1 through the filling rod 303, nitrogen is introduced for pressurization, the accuracy of a simulation experiment is improved, a flow sensor 304 is arranged between the liquid storage tank 301 and the filling rod 303, a pressure sensor 305 is arranged between the gas storage bottle 302 and the filling rod 303, the water filling amount and the pressure in the main tank body 1 are convenient to monitor, and in addition, a high-pressure pump 306 and a valve are arranged on the pipeline, so.
In order to improve the uniformity of water injection and gas injection into similar materials, a plurality of groups of small holes 307 are arranged on the injection rod 303, the number of each group of small holes 307 is a plurality, the plurality of groups of small holes 307 are arranged at equal intervals along the axial direction of the injection rod 303, the plurality of groups of small holes 307 are arranged in a staggered mode, injected water or nitrogen enters the main box body 1 through the small holes 307, the plurality of groups of small holes 307 are arranged in a staggered mode, water or nitrogen is injected into the similar materials in all directions of the injection rod 303, the injection uniformity is improved, and the accuracy of experimental results is further improved. In this embodiment, the number of the injection rods 303 is four, and the four injection rods 303 are arranged in parallel and the connection line is rectangular, so that the injection uniformity is further improved, and the experiment efficiency is improved.
Furthermore, the movable baffle comprises an upper baffle 101, a middle baffle 102 and a lower baffle 103 which are arranged in parallel, the upper baffle 101 and the lower baffle 103 are the same in shape and are symmetrically arranged on two sides of the middle baffle 102, and the area of the middle baffle 102 is smaller than that of the upper baffle 101 and the lower baffle 103; the upper baffle 101, the middle baffle 102 and the lower baffle 103 are respectively connected with the main box body 1 through bolts. After the loading module 2 is loaded to the target position, before the simulated drilling construction, the middle baffle plate 102 is disassembled to carry out the drilling construction, the middle baffle plate 102 is a tunnel space at the position of the simulated underground drilling construction, and the accuracy of the experiment is ensured to the maximum extent.
It should be noted that the base 104 is further disposed at the bottom of the main box 1, so as to improve the stability of the device.
Meanwhile, the monitoring module 4 comprises an acoustic emission monitoring unit 401, an ultrasonic monitoring unit 402 and a simulation extraction unit 403, the loading module 2 and the gas-liquid filling module 3 are connected with the monitoring module 4, and relevant parameters of the damage process and the drilling life cycle of the similar materials in the experiment process are monitored.
When the multifunctional physical simulation experiment device for gas extraction drilling is used for experiments, the method comprises the following steps:
the method comprises the following steps of firstly, carrying out self-checking on the multifunctional physical simulation experiment device for the gas extraction drill hole before an experiment, and ensuring that the device can normally work.
And step two, determining a similarity ratio according to the actual geological conditions of the simulation area, designing a corresponding model size, determining the proportion of similar materials according to the coal rock property parameter test, then configuring the similar materials, and filling the similar materials into the main box body 1 through the box body opening according to the geological condition survey result.
And step three, in the filling process of the similar material, according to the water content condition of the stratum, filling water with corresponding content into the similar material through the gas-liquid filling module 3.
And step four, connecting the movable baffle with the main box body 1 after the similar material filling and water injection operations are finished.
And fifthly, self-checking the multifunctional physical simulation experiment device for the gas extraction drill hole again, starting the loading module 2 after the self-checking is finished, setting each loading parameter, and stopping loading after the target value is reached.
And step six, calculating the target gas pressure in the multifunctional physical simulation experiment device for the gas extraction drill hole according to the gas pressure in the coal seam of the simulated target area, and starting the gas-liquid filling module 3 to keep the gas pressure in the multifunctional physical simulation experiment device for the gas extraction drill hole stable.
And step seven, opening the movable baffle to expose similar materials, applying drilling/pressure relief operation of an experimental drilling tool according to the made experimental design, monitoring process data by the monitoring module 4, and after drilling and fracturing construction are finished, timely sealing holes and performing extraction to simulate the extraction process.
And step eight, stopping extraction after the extraction time meets a target simulation extraction period, controlling the loading module 2 to return to an initial state, cleaning similar materials out of the main box body 1, and performing self-checking on the gas extraction drilling multifunctional physical simulation experiment device.
And step nine, analyzing and summarizing the data recorded by the monitoring module 4.
By utilizing the multifunctional physical simulation experiment device for gas extraction drilling, stable and accurate triaxial loading can be realized through the loading modules 2 in three directions; the gas-liquid filling module 3 achieves the conditions of preset gas pressure, moisture content and the like in an experiment through the filling rods 303 distributed in space, and more accurately simulates a stratum environment; the loading module 2 and the gas-liquid filling module 3 are connected with the monitoring module 4, so that high integration automation of the device is realized; the monitoring module 4 can realize whole-process monitoring and recording on the fracture in the experimental process and monitor key parameters such as concentration, flow and the like in the whole process of drilling extraction; in addition, the composite supporting plate 5 can be compressed, the structure is simple and reliable, and similar materials are hermetically loaded in the whole process; the utility model discloses an experimental apparatus can effectively use in the laboratory simulation experiment of multiple gas drainage drilling, and the simulation effect is better, convenient to popularize and use.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. The utility model provides a multi-functional physical simulation experimental apparatus of gas drainage drilling which characterized in that: the device comprises a main box body, a loading module, a gas-liquid filling module and a monitoring module, wherein similar materials to be tested can be contained in the main box body, the main box body is provided with a box body opening and a movable baffle plate, the box body opening is communicated with an inner cavity of the main box body, the movable baffle plate is detachably connected with the main box body, and the movable baffle plate is arranged at the box body opening; the loading modules comprise loading elements and composite supporting plates, the loading elements can apply loads to the composite supporting plates, the direction of the loads applied by the loading elements is perpendicular to the composite supporting plates, similar materials to be tested are located in a cavity defined by the composite supporting plates and the inner walls of the main box body, the number of the loading modules is three, and the directions of the loads applied by the three groups of the loading elements are perpendicular to each other in pairs; the gas-liquid filling module is communicated with an inner cavity of the main box body, the gas-liquid filling module can fill liquid and gas into similar materials, and the monitoring module can monitor parameters of a damage process and a drilling life cycle of the similar materials in an experiment process.
2. The multifunctional physical simulation experiment device for the gas extraction drill hole according to claim 1, characterized in that: the loading module further comprises a shell, the loading element is arranged in the shell, the shell is detachably connected with the main box body, the inner cavity of the shell is communicated with the inner cavity of the main box body, the loading element is loaded by hydraulic pressure, the loading element comprises a hydraulic cylinder, a hydraulic rod and a hydraulic head, the hydraulic cylinder is arranged on the shell, one end of the hydraulic rod is slidably connected with the hydraulic cylinder, the other end of the hydraulic rod is connected with the hydraulic head, the hydraulic rod can drive the hydraulic head to reciprocate, the hydraulic head can abut against the composite supporting plate, and a pressure displacement sensor is further arranged at the joint of the hydraulic rod and the hydraulic head;
a dustproof baffle is further arranged in the shell and arranged between the hydraulic cylinder and the hydraulic head, and the hydraulic rod can slidably penetrate through the dustproof baffle;
in each group of loading modules, the number of the loading elements is four, the four groups of loading elements are parallel, and the connecting lines are rectangular.
3. The multifunctional physical simulation experiment device for the gas extraction drill hole according to claim 2, characterized in that: three two counterbalance and two looks vertical settings of composite support board, composite support board's volume is two in addition composite support board's pressure effect can be compressed down.
4. The multifunctional physical simulation experiment device for the gas extraction drill hole according to claim 3, characterized in that: the composite supporting plate is of a split structure and comprises main supporting plates and connecting plates, the connecting plates are connected with the main supporting plates in a sliding mode, the number of the main supporting plates and the number of the connecting plates are four, and the connecting plates can be connected with the adjacent main supporting plates;
the main supporting plate is provided with a sliding groove, the connecting plate is provided with a protruding part, the protruding part is slidably arranged in the sliding groove, an elastic piece is further arranged between the protruding part and the sliding groove, and the deformation direction of the elastic piece is parallel to the relative sliding direction of the protruding part and the sliding groove; the guide groove and the guide strip are arranged between the main support plate and the connecting plate, the guide strip is arranged on the connecting plate, the guide groove is positioned on the main support plate, the guide strip is slidably arranged on the guide groove, and the relative sliding direction of the guide strip and the guide groove is parallel to the relative sliding direction of the sliding groove and the protruding part.
5. The multifunctional physical simulation experiment device for the gas extraction drill hole according to claim 4, characterized in that: an inner supporting plate is arranged on one side, far away from the loading element, of the composite supporting plate, and the area of the inner supporting plate is smaller than that of the composite supporting plate.
6. The multifunctional physical simulation experiment device for the gas extraction drill hole according to claim 1, characterized in that: the gas-liquid filling module comprises a liquid storage tank, a gas storage bottle and a filling rod, the filling rod is of a hollow tubular structure, one end of the filling rod is communicated with the liquid storage tank and the gas storage bottle through a pipeline, and the other end of the filling rod extends into an inner cavity of the main box body; a flow sensor is arranged between the liquid storage tank and the filling rod, and a pressure sensor is arranged between the gas storage bottle and the filling rod.
7. The multifunctional physical simulation experiment device for the gas extraction drill hole according to claim 6, characterized in that: the injection rod is provided with a plurality of groups of small holes, the number of each group of small holes is a plurality, the plurality of groups of small holes are arranged at equal intervals along the axial direction of the injection rod, and the plurality of groups of small holes are arranged in a staggered mode.
8. The multifunctional physical simulation experiment device for the gas extraction drill hole according to claim 1, characterized in that: the movable baffle comprises an upper baffle, a middle baffle and a lower baffle which are arranged in parallel, the upper baffle and the lower baffle are the same in shape and are symmetrically arranged on two sides of the middle baffle, and the area of the middle baffle is smaller than that of the upper baffle and that of the lower baffle; the upper baffle, the middle baffle and the lower baffle are respectively connected with the main box body through bolts.
9. The multifunctional physical simulation experiment device for the gas extraction drill hole according to claim 1, characterized in that: the monitoring module comprises an acoustic emission monitoring unit, an ultrasonic monitoring unit and a simulation extraction unit.
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| CN202021298620.5U CN212272284U (en) | 2020-07-06 | 2020-07-06 | Multifunctional physical simulation experiment device for gas extraction drilling |
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| CN202021298620.5U CN212272284U (en) | 2020-07-06 | 2020-07-06 | Multifunctional physical simulation experiment device for gas extraction drilling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648818A (en) * | 2020-07-06 | 2020-09-11 | 西安科技大学 | Multifunctional physical simulation experiment device for gas extraction drilling and use method |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111648818A (en) * | 2020-07-06 | 2020-09-11 | 西安科技大学 | Multifunctional physical simulation experiment device for gas extraction drilling and use method |
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