CN105807006B - Fissure-plane liquid flow simulating test method - Google Patents
Fissure-plane liquid flow simulating test method Download PDFInfo
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- CN105807006B CN105807006B CN201610289293.9A CN201610289293A CN105807006B CN 105807006 B CN105807006 B CN 105807006B CN 201610289293 A CN201610289293 A CN 201610289293A CN 105807006 B CN105807006 B CN 105807006B
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Abstract
The invention discloses a kind of fissure-plane liquid flow simulating test methods, including early-stage preparations, obtain section, scan section, trepanning, load test specimen, apply normal stress, water filling, it is same to organize other experiments, arrangement experimental data and etc., the test specimen wherein cut or cleaved is set in being loaded in the test box of inner box, and depth residing for the pressure simulation by normal direction, to provide a kind of fissure-plane liquid flow simulating test method, convenient for the depth of investigation, the influence that the parameters such as hydraulic pressure and fissure-plane pattern flow fissure-plane liquid, there is important theory value and Engineering Guidance meaning to disclosing the flowing of fissure-plane liquid to a deeper level.
Description
Technical field
The present invention relates to a kind of fissure-plane liquid flow simulating test methods, are mainly used for studying different fissure-planes to liquid
The influence of flowing.
Background technology
Currently, with the development of society, mineral resources and water resource under more and more complex geological conditions are detected and open
Hair, since geological conditions is extremely complex, the mechanics problem in recovery process is joined for reasonably selecting recovery method and its structure
Number, improve mining rate, rationally using resource, ensure that safety of workers operation and final increase economic efficiency all are particularly important
's.Due to the complexity of geological conditions, Computer Numerical Simulation can not be in the reflection actual conditions recovery process of complete and accurate
The influence of parameters.Therefore, analog simulation experiment is mostly used greatly at present to study the influence of parameters, convenient for utilizing scene
True physical entity, the more state of true and accurate simulation mineral products.However, there is no be directed to fissure-plane to liquid flow at present
The research of dynamic influence.
Invention content
Technical problem to be solved by the present invention lies in a kind of fissure-plane liquid flow simulating test method is provided, for grinding
Study carefully the influence that parameters and fissure-plane flow liquid.
Technical scheme is as follows：A kind of fissure-plane liquid flow simulating test method, includes the following steps,
Step 1: early-stage preparations, pillared test specimen is processed by rock mass sample；
Step 2: obtaining section, test specimen is laterally cut by way of compression shear, or by test specimen by way of splitting
It laterally splits disconnected；
Step 3: scanning section, is scanned the section of test specimen, obtains the three dimensional point cloud of section, and divided
Analysis；
Step 4: trepanning, mounting hole is opened up at the first half center of test specimen, the lower end perforation test specimen first half of mounting hole
The plane of disruption；
Step 5: loading test specimen, the test specimen of fracture is combined again, and be put into test box,
The test box includes upper cartridge body, lower box body and inner box, and the upper cartridge body and lower box body surround the box-like of sealing,
The inner box includes upper left shell, upper right shell, lower-left shell and bottom right shell, and the upper left shell and upper right shell are located in upper cartridge body,
The right and left of the upper cartridge body is equipped with the locating rod arranged in left-right direction, and the upper left shell hangs over corresponding with upper right shell
On the inner end of locating rod；The lower-left shell and bottom right shell are located in lower box body, and the lower-left shell and bottom right shell are located at upper left
The lower section of shell and upper right shell, there are the first gap between the upper left shell and lower-left shell, the upper right shell and bottom right shell it
Between there are the second gaps；Be provided with left hole road and right hole road in the test box lower box body, the left hole road and right hole road it is interior
Respectively with the first gap and the second gap area, the outer aperture in the left hole road and right hole road penetrates through the outer of test box in aperture
Wall；The test specimen is located in the chamber that upper left shell, upper right shell, lower-left shell and bottom right shell surround, and the first gap and the second seam
The fracture position of gap face test specimen；
It is fitted with compression bar on the upper cartridge body, is fixedly connected with positioned at upper left shell and upper right shell in the lower end of the compression bar
Between pressure head, the bottom surface of the pressure head and the top surface of test specimen offset, and is also fixedly connected with connector in the lower end of the pressure head, institute
It states connector to stretch into the mounting hole of test specimen, is used in combination bonding agent by connector outer wall and inner wall of the hole installing adhering and sealing；The connector,
Duct, the lower end of the inner orifice perforation connector in the upper duct, the outer aperture perforation pressure in upper duct are provided in pressure head and compression bar
The lateral wall of bar；
It is both provided with sealing ring between the compression bar and upper cartridge body, between compression bar and pressure head, between pressure head and connector；
Step 6: applying normal stress, pressure is applied to compression bar, makes test specimen by normal stress；
Step 7: water filling, from the outer aperture in upper duct with constant water pressure water filling, aperture outside left hole road and right hole road is monitored
Flow；Or from the outer aperture in left hole road and right hole road with constant water pressure water filling, in monitoring outside duct aperture flow；
Step 8: with other experiments are organized, change the pressure size applied to compression bar；Or when step 7 is outside upper duct
When the water filling of aperture, in change outside duct aperture constant water pressure；Or when step 7 is from left hole road and the water filling of right hole road, change
The constant water pressure in left hole road and right hole road；Or the test specimen of different section is chosen, it repeats the above steps；
Step 9: arranging experimental data.
Described method provide a kind of fissure-plane liquid flow simulating test method, compression bar is applied in step 6 pressure
Size can be with analog depth；When step 7 aperture water filling outside upper duct, water injection test can be simulated, convenient for the depth of investigation,
The influence of water injection pressure and fissure-plane to water filling；When step 7 is from left hole road and the water filling of right hole road, bailing test can be simulated,
Influence convenient for the depth of investigation, hydraulic pressure and fissure-plane to drawing water；To sum up, by studying single parameter or multiple parameters to taking out
Water, water filling influence, to disclose to a deeper level fissure-plane liquid flowing have important theory value and Engineering Guidance meaning.
The upper cartridge body includes rectangular box-like upper ledge and is fixed on the cover board of arch, the upper left shell and upper right shell
In the framework of upper ledge, the locating rod is also threaded through on the upper ledge of upper cartridge body.Upper cartridge body is set in this way, makes test specimen and inner box
The assembly of body is more convenient.
The lower box body includes rectangular box-like lower frame and is fixed on the bottom plate of lower frame bottom, the lower-left shell and bottom right shell
In the framework of lower frame, the left hole road and right hole road are opened on the lower frame of lower box body.Lower box body is set in this way, makes test specimen
It is more convenient with the assembly of inner box.
The test specimen is 100*100*100mm3Square.
Advantageous effect：The present invention carries out water filling and bailing test using the test box of built-in inner box to test specimen, to carry
A kind of fissure-plane liquid flow simulating test method is supplied, convenient for parameters such as research fissure-plane, depth, water injection pressures to fissure-plane
The influence of liquid flowing is anticipated to disclosing the flowing of fissure-plane liquid to a deeper level with important theory value and Engineering Guidance
Justice.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the A-A sectional views of Fig. 2.
It is marked in figure as follows：First gap 1, bottom plate 2, lower frame 3, upper ledge 4, cover board 5, compression bar 6, the second gap 7, locating rod
8, left hole road 9, right hole road 10, pressure head 12, connector 11, upper duct 13, upper left shell 14, upper right shell 15, lower-left shell 16 and bottom right shell
17。
It should be noted that：In description of the invention, noun of locality "front", "rear", "left", "right" in actual use to grasp
Make personnel station subject to the direction of visual lines and equipment oriented of Fig. 1 views namely a left side for Fig. 1 views is in present invention description
The right side of " left side ", Fig. 1 views is " right side " in present invention description, " rear ", Fig. 2 views in the upper description for the present invention of Fig. 2 views
It is lower for the present invention description in " preceding ".
Specific implementation mode
The embodiment of the present invention is described below in detail, the embodiment described example is shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
Figure description embodiment is exemplary, it is intended to be explained the present invention, and is not considered as limiting the invention.
In the description of the present invention, it should be noted that if any term "center", " transverse direction ", "upper", "lower", " preceding ",
The indicating positions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" and position relationship are based on attached
Orientation or positional relationship shown in figure is merely for convenience of the narration present invention and simplifies description, rather than indicates or imply and is signified
Device or element must have a particular orientation, with particular orientation construct and operate, the tool that should not be construed as limiting the invention
Body protection domain.In addition, being used for description purposes only if any term " first ", " second ", it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of technical characteristic.
In the present invention, except as otherwise clear stipulaties and restriction, if any term " assembling ", " connected ", " connection ", " fixation " etc.
Term should be gone to understand as broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can also
It is mechanical connection, can also be electrical connection；It can be directly connected, can also be to be connected by intermediary, can be two
It is connected inside element.For those of ordinary skills, above-mentioned term can be understood at this as the case may be
Concrete meaning in invention.
In invention, unless otherwise specified and limited, fisrt feature the "upper" of second feature or "lower" may include
First and second features are in direct contact, and can not also be in direct contact but by between them including the first and second features
In addition characterisation contact.Moreover, fisrt feature second feature " on ", " under " and " above " include fisrt feature in the second spy
Right over sign and oblique upper, or be only to indicate that fisrt feature level height is higher than the height of second feature.Fisrt feature is
Two features " on ", " under " and " following " include that fisrt feature is directly under or diagonally below the second feature, or is merely representative of
One characteristic level height is less than second feature.
Below in conjunction with the accompanying drawings, it is further described by the specific implementation mode to the present invention, makes the technology of the present invention
Scheme and advantage are clearer, clear.
Embodiment one：
As shown in Figure 1, Figure 2 and Figure 3, the present embodiment includes the following steps,
Step 1: early-stage preparations, process pillared test specimen, the preferably described test specimen of the present embodiment is 100* by rock mass sample
100*100mm3Square.Certainly, according to experiment needs, test specimen can also be the cylinder of diameter 100mm, high 100mm.
Step 2: obtaining section, test specimen is laterally cut by way of compression shear；
Step 3: scanning section, is scanned the section of test specimen, obtains the three dimensional point cloud of section, and divided
Analysis；
Step 4: trepanning, opens up mounting hole, the preferred mounting hole of the present embodiment is in aperture 10mm at the first half center of test specimen
Circular hole.The upper surface of the upper end perforation test specimen of the mounting hole, the plane of disruption of the lower end perforation test specimen first half of mounting hole；
Step 5: loading test specimen, the test specimen of fracture is combined again, and be put into test box, the test box includes
Upper cartridge body, lower box body and inner box, the upper cartridge body and lower box body surround the box-like of sealing.The upper cartridge body includes rectangular box-like
Upper ledge 4 and be fixed on the cover board 5 at the top of upper ledge 4, the lower box body includes rectangular box-like lower frame 3 and is fixed on 3 bottom of lower frame
The bottom plate 2 in portion.It is equipped with sealing between the cover board 5 and upper ledge 4, between upper ledge 4 and lower frame 3, between lower frame 3 and bottom plate 2
Circle.
The inner box includes upper left shell 14, upper right shell 15, lower-left shell 16 and bottom right shell 17, the upper left shell 14, upper right
The shape for the inner box intracoelomic cavity and test specimen that shell 15, lower-left shell 16 and bottom right shell 17 surround is adapted.The upper left shell 14 and upper right
Shell 15 is located in upper cartridge body, and the preferably described upper left shell 14 of the present embodiment and upper right shell 15 are located in the framework of upper ledge 4.On described
The right and left of box body is equipped with the locating rod 8 arranged in left-right direction, and the locating rod 8 is also threaded through the upper ledge of upper cartridge body
On 4, the upper left shell 14 is hung over upper right shell 15 on the inner end of corresponding locating rod 8.The present embodiment preferably coordinates with upper left shell 14
Locating rod 8 have front and back two, with upper right shell 15 coordinate locating rod 8 also have front and back two.The lower-left shell 16 and bottom right shell
17 are located in lower box body, and the preferably described lower-left shell 16 of the present embodiment and bottom right shell 17 are located in the framework of lower box body lower frame 3.It is described
Lower-left shell 16 and bottom right shell 17 are located at the lower section of upper left shell 14 and upper right shell 15, the upper left shell 14 and lower-left shell 16 it
Between there are the first gaps 1, there are the second gaps 7 between the upper right shell 15 and bottom right shell 17.In the test box lower box body
It is inside provided with left hole road 9 and right hole road 10, the left hole road 9 and right hole road 10 are opened on the lower frame 3 of lower box body.The left hole road
9 and the inner orifice in right hole road 10 be connected to respectively with the first gap 1 and the second gap 7, the exit orifice in the left hole road 9 and right hole road 10
Mouth penetrates through the outer wall of test box.The preferably described left hole road 9 of the present embodiment is located at the left front portion of test box lower frame 3, left hole road 9
Inner orifice is connected to the front in the first gap 1 section；After the preferably described right hole road 10 of the present embodiment is located at the right side of test box lower frame 3
Portion, the inner orifice in right hole road 10 are connected to the back in the second gap 7 section.The test specimen is located at upper left shell 14, upper right shell 15, lower-left
In the chamber that shell 16 and bottom right shell 17 surround, and the fracture position of 7 face test specimen of the first gap 1 and the second gap.
It is fitted with compression bar 6 on the upper cartridge body, is fixedly connected with positioned at upper left shell 14 and the right side in the lower end of the compression bar 6
Pressure head 12 between upper casing 15, the bottom surface of the pressure head 12 and the top surface of test specimen offset.It is also fixed in the lower end of the pressure head 12
It is connected with connector 11, the connector 11 stretches into the mounting hole of test specimen, and will be in 11 outer wall of connector and mounting hole by bonding agent
Wall adhering and sealing.Upper duct 13, the inner orifice perforation in the upper duct 13 are provided in the connector 11, pressure head 12 and compression bar 6
The lower end of connector 11, the lateral wall of the outer aperture perforation compression bar 6 in upper duct 13.Between the compression bar 6 and upper cartridge body, compression bar 6
It is both provided with sealing ring between pressure head 12, between pressure head 12 and connector 11.
Step 6: applying normal stress, pressure is applied to compression bar 6, makes test specimen by normal stress.
Step 7: water filling, from the outer aperture in upper duct 13 with constant water pressure water filling, outside monitoring left hole road 9 and right hole road 10
The flow in aperture.
Step 8: with other experiments are organized, change the pressure size applied to compression bar 6；Or change upper 13 outer aperture of duct
Constant water pressure；Or the test specimen of different section is chosen, it repeats the above steps.
Step 9: arranging experimental data.
Table one：
It chooses rock mass sample of the same race and is processed into test specimen, repetition experiment is carried out according to the following table,
By analyzing repeating experiment shown in table one, you can under the conditions of studying same fissure-plane, depth and water filling
Influence of the pressure to injection flow.
Embodiment two：
As shown in Figure 1, Figure 2 and Figure 3, the present embodiment includes the following steps,
Step 1: early-stage preparations, process pillared test specimen, the preferably described test specimen of the present embodiment is 100* by rock mass sample
The square of 100*100mm3.Certainly, according to experiment needs, test specimen can also be the cylinder of diameter 100mm, high 100mm.
Step 2: obtaining section, test specimen laterally split by way of splitting disconnected；
Step 3: scanning section, is scanned the section of test specimen, obtains the three dimensional point cloud of section, and divided
Analysis；
Step 4: trepanning, opens up mounting hole, the preferred mounting hole of the present embodiment is in aperture 10mm at the first half center of test specimen
Circular hole.The upper surface of the upper end perforation test specimen of the mounting hole, the plane of disruption of the lower end perforation test specimen first half of mounting hole；
Step 5: loading test specimen, the test specimen of fracture is combined again, and be put into test box, the test box includes
Upper cartridge body, lower box body and inner box, the upper cartridge body and lower box body surround the box-like of sealing.The upper cartridge body includes rectangular box-like
Upper ledge 4 and be fixed on the cover board 5 at the top of upper ledge 4, the lower box body includes rectangular box-like lower frame 3 and is fixed on 3 bottom of lower frame
The bottom plate 2 in portion.It is equipped with sealing between the cover board 5 and upper ledge 4, between upper ledge 4 and lower frame 3, between lower frame 3 and bottom plate 2
Circle.
The inner box includes upper left shell 14, upper right shell 15, lower-left shell 16 and bottom right shell 17, the upper left shell 14, upper right
The shape for the inner box intracoelomic cavity and test specimen that shell 15, lower-left shell 16 and bottom right shell 17 surround is adapted.The upper left shell 14 and upper right
Shell 15 is located in upper cartridge body, and the preferably described upper left shell 14 of the present embodiment and upper right shell 15 are located in the framework of upper ledge 4.On described
The right and left of box body is equipped with the locating rod 8 arranged in left-right direction, and the locating rod 8 is also threaded through the upper ledge of upper cartridge body
On 4, the upper left shell 14 is hung over upper right shell 15 on the inner end of corresponding locating rod 8.The present embodiment preferably coordinates with upper left shell 14
Locating rod 8 have front and back two, with upper right shell 15 coordinate locating rod 8 also have front and back two.The lower-left shell 16 and bottom right shell
17 are located in lower box body, and the preferably described lower-left shell 16 of the present embodiment and bottom right shell 17 are located in the framework of lower box body lower frame 3.It is described
Lower-left shell 16 and bottom right shell 17 are located at the lower section of upper left shell 14 and upper right shell 15, the upper left shell 14 and lower-left shell 16 it
Between there are the first gaps 1, there are the second gaps 7 between the upper right shell 15 and bottom right shell 17.In the test box lower box body
It is inside provided with left hole road 9 and right hole road 10, the left hole road 9 and right hole road 10 are opened on the lower frame 3 of lower box body.The left hole road
9 and the inner orifice in right hole road 10 be connected to respectively with the first gap 1 and the second gap 7, the exit orifice in the left hole road 9 and right hole road 10
Mouth penetrates through the outer wall of test box.The preferably described left hole road 9 of the present embodiment is located at the left front portion of test box lower frame 3, left hole road 9
Inner orifice is connected to the front in the first gap 1 section；After the preferably described right hole road 10 of the present embodiment is located at the right side of test box lower frame 3
Portion, the inner orifice in right hole road 10 are connected to the back in the second gap 7 section.The test specimen is located at upper left shell 14, upper right shell 15, lower-left
In the chamber that shell 16 and bottom right shell 17 surround, and the fracture position of 7 face test specimen of the first gap 1 and the second gap.
It is fitted with compression bar 6 on the upper cartridge body, is fixedly connected with positioned at upper left shell 14 and the right side in the lower end of the compression bar 6
Pressure head 12 between upper casing 15, the bottom surface of the pressure head 12 and the top surface of test specimen offset.It is also fixed in the lower end of the pressure head 12
It is connected with connector 11, the connector 11 stretches into the mounting hole of test specimen, and will be in 11 outer wall of connector and mounting hole by bonding agent
Wall adhering and sealing.Upper duct 13, the inner orifice perforation in the upper duct 13 are provided in the connector 11, pressure head 12 and compression bar 6
The lower end of connector 11, the lateral wall of the outer aperture perforation compression bar 6 in upper duct 13.Between the compression bar 6 and upper cartridge body, compression bar 6
It is both provided with sealing ring between pressure head 12, between pressure head 12 and connector 11.
Step 6: applying normal stress, pressure is applied to compression bar 6, makes test specimen by normal stress.
Step 7: from the outer aperture in left hole road 9 and right hole road 10 with constant water pressure water filling, 13 outer aperture of duct in monitoring
Flow.
Step 8: with other experiments are organized, change the pressure size applied to compression bar 6 or change left hole road 9 and right hole road
The constant water pressure in 10 outer apertures or the test specimen for choosing different section, repeat the above steps.
Step 9: arranging experimental data.
Table two：
It chooses rock mass sample of the same race and is processed into test specimen, repetition experiment is carried out according to the following table,
By analyzing repeating experiment shown in table two, you can study under same fissure-plane and hydraulic condition, depth
Influence to the flow that draws water.
Claims (3)
1. a kind of fissure-plane liquid flow simulating test method, it is characterised in that：Include the following steps,
Step 1: early-stage preparations, pillared test specimen is processed by rock mass sample；
Step 2: obtaining section, test specimen is laterally cut by way of compression shear, or by test specimen transverse direction by way of splitting
It splits disconnected；
Step 3: scanning section, is scanned the section of test specimen, obtains the three dimensional point cloud of section, and analyzed；
Step 4: trepanning, mounting hole, the fracture of the lower end perforation test specimen first half of mounting hole are opened up at the first half center of test specimen
Face；
Step 5: loading test specimen, the test specimen of fracture is combined again, and be put into test box,
The test box includes upper cartridge body, lower box body and inner box, and the upper cartridge body and lower box body surround the box-like of sealing, described
Inner box includes upper left shell, upper right shell, lower-left shell and bottom right shell, and the upper left shell and upper right shell are located in upper cartridge body, described
The right and left of upper cartridge body is equipped with the locating rod arranged in left-right direction, and the upper left shell hangs over corresponding positioning with upper right shell
On the inner end of bar；The lower-left shell and bottom right shell are located in lower box body, the lower-left shell and bottom right shell be located at upper left shell and
The lower section of upper right shell, there are the first gaps between the upper left shell and lower-left shell, are stayed between the upper right shell and bottom right shell
There is the second gap；Left hole road and right hole road, the inner orifice in the left hole road and right hole road are provided in the test box lower box body
Respectively with the first gap and the second gap area, the outer aperture in the left hole road and right hole road penetrates through the outer wall of test box；Institute
It states test specimen to be located in the chamber that upper left shell, upper right shell, lower-left shell and bottom right shell surround, and the first gap and the second gap face
The fracture position of test specimen；
It is fitted with compression bar on the upper cartridge body, is fixedly connected between upper left shell and upper right shell in the lower end of the compression bar
Pressure head, the bottom surface of the pressure head and the top surface of test specimen offset, and connector is also fixedly connected in the lower end of the pressure head, described to connect
Head stretches into the mounting hole of test specimen, is used in combination bonding agent by connector outer wall and inner wall of the hole installing adhering and sealing；In the connector, pressure head
Be provided with upper duct in compression bar, the lower end of the inner orifice perforation connector in the upper duct, the outer aperture perforation compression bar in upper duct
Lateral wall；
The upper cartridge body includes rectangular box-like upper ledge and is fixed on the cover board of arch, and the upper left shell and upper right shell are located at
In the framework of upper ledge, the locating rod is also threaded through on the upper ledge of upper cartridge body；
It is both provided with sealing ring between the compression bar and upper cartridge body, between compression bar and pressure head, between pressure head and connector；
Step 6: applying normal stress, pressure is applied to compression bar, makes test specimen by normal stress；
Step 7: water filling, from the outer aperture in upper duct with constant water pressure water filling, the stream in aperture outside left hole road and right hole road is monitored
Amount；Or from the outer aperture in left hole road and right hole road with constant water pressure water filling, in monitoring outside duct aperture flow；
Step 8: with other experiments are organized, change the pressure size applied to compression bar；Or when step 7 is from the outer aperture in upper duct
When water filling, in change outside duct aperture constant water pressure；Or when step 7 is from left hole road and the water filling of right hole road, change left hole
The constant water pressure in road and right hole road；Or the test specimen of different section is chosen, it repeats the above steps；
Step 9: arranging experimental data.
2. fissure-plane liquid flow simulating test method according to claim 1, it is characterised in that：The lower box body includes
Rectangular box-like lower frame and the bottom plate for being fixed on lower frame bottom, the lower-left shell and bottom right shell are located in the framework of lower frame, described
Left hole road and right hole road are opened on the lower frame of lower box body.
3. according to any fissure-plane liquid flow simulating test methods of claim 1-2, it is characterised in that：The test specimen
For 100*100*100mm3Square.
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| CN102419303B (en) * | 2011-08-15 | 2013-03-13 | 山东科技大学 | Crack grouting visualization tester under complex conditions |
| CN102735547B (en) * | 2012-07-05 | 2014-07-02 | 重庆大学 | Coal-rock hydraulic fracturing testing method under true triaxial state |
| CN102865064B (en) * | 2012-10-19 | 2015-03-25 | 河南理工大学 | Gas and water flow condition and effect simulation device of coal bed gas well discharging and mining process |
| CN102944665B (en) * | 2012-11-22 | 2015-10-21 | 武汉大学 | Be applicable to shear box and the test method of rock joint shear seepage coupling test |
| CN103033458A (en) * | 2012-12-24 | 2013-04-10 | 长江水利委员会长江科学院 | Indoor test system and test method for seepage characteristics of jointed rock mass |
| CN103089295B (en) * | 2013-01-23 | 2015-10-28 | 重庆大学 | Coal bed gas extraction test method in multiple seam unitized production process |
| CN103471923B (en) * | 2013-09-25 | 2015-04-08 | 中国地震局地壳应力研究所 | Rapid testing machine for multi-diameter rock core hydraulic fracturing tensile strength |
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