CN108896468B - Rock sample seepage flow detection device - Google Patents
Rock sample seepage flow detection device Download PDFInfo
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- CN108896468B CN108896468B CN201811119857.XA CN201811119857A CN108896468B CN 108896468 B CN108896468 B CN 108896468B CN 201811119857 A CN201811119857 A CN 201811119857A CN 108896468 B CN108896468 B CN 108896468B
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- 238000001514 detection method Methods 0.000 title claims abstract description 37
- 239000011435 rock Substances 0.000 title claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 163
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000011148 porous material Substances 0.000 claims description 14
- 238000012546 transfer Methods 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 description 12
- 238000012360 testing method Methods 0.000 description 9
- 239000012530 fluid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005325 percolation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002775 capsule Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a rock sample seepage detection device, which comprises an underframe and a detection table, wherein a first sealing plate and a second sealing plate are fixedly arranged on the detection table; the loading device comprises a third sealing plate and a fourth sealing plate; the support frame is positioned at the outer side of the detection table, a driving seat is arranged on the support frame, the top plate is fixed on the driving seat through a first connecting device capable of adjusting the height of the top plate relative to the detection table, the third sealing plate and the fourth sealing plate are fixed on the top plate through a second connecting device, and when the top plate is at the lowest position, the detection table, the first sealing plate, the second sealing plate, the third sealing plate, the fourth sealing plate and the top plate jointly form a closed sample accommodating cavity; the side face of the third sealing plate and the side face of the fourth sealing plate, which faces the sample accommodating cavity, are fixed with a loading elastic bag body, and the loading elastic bag body is connected with a pressurizing seepage device. The device for vertical loading and horizontal loading realizes linkage, can simplify the whole structure of the equipment, and has simple structure and low manufacturing cost.
Description
Technical Field
The invention relates to the field of geotechnical engineering measuring instruments, in particular to a rock sample seepage detection device.
Background
In recent years, with the mass construction of large-scale projects such as energy exploitation, nuclear waste disposal, hydraulic engineering, utilization of underground space and the like, the problem of rock seepage is increasingly focused, and in geotechnical projects such as mining, hydraulic and hydroelectric power, tunnel, slope reinforcement and the like, crack seepage has an important influence on the stability of the geotechnical projects. On one hand, rock mass cracks are one of the important reasons for causing underground engineering water damage, and on the other hand, the existence of the cracks also greatly reduces the strength of the rock mass. It is well known that the fluid pressure in the water-bearing pores changes the stress state in the rock mass because of the small compressibility of water, which is easy to transfer pressure. However, the deformation properties of the rock mass are significantly different from those of the fluid, so that the change of the stress field caused by the fluid pressure and the continuous change of the fluid stress caused by the dynamic property of the flowing groundwater have non-negligible influence on the deformation characteristics of the geologic body. Therefore, the research on the fracture mechanism and strength characteristics of the fractured rock mass has very important theoretical significance and practical engineering application value for the engineering and stabilization disciplines of the hydroelectric engineering geology. For rock materials, shear failure is the main failure mode, so research on the shear-percolation coupling failure mechanism of rock mass is of great importance to solve the problems.
The invention patent with application number 201511024868.6 discloses a two-dimensional rock sample fracture network seepage test device, which comprises: the upper part of the underframe is divided into a sample injection area and a test area, and a sliding rail is arranged between the sample injection area and the test area; the sealing mechanism is used for sealing the two-dimensional rock sample, and the four sides of the sealing mechanism are respectively provided with water permeable areas; the rock sample base can freely slide on the sliding rail and is used for conveying a two-dimensional rock sample placed horizontally to the test area from the sample injection area; the longitudinal loading mechanism is fixed above the test area of the underframe and is of a lifting structure as a whole; the lateral loading mechanism is fixed above the testing area of the underframe, and the whole lateral loading mechanism is of a lifting structure and is staggered with the longitudinal loading mechanism. Wherein the two-dimensional rock sample is square and provided with a fracture network; the longitudinal loading mechanism and the lateral loading mechanism are lifted when the two-dimensional rock sample is conveyed; after the two-dimensional rock sample is transported to the test area, the longitudinal loading mechanism and the lateral loading mechanism drop, applying longitudinal and lateral forces, respectively, to the two-dimensional rock sample transported to the test area. The experimental device can test the extended seepage, but has a complex structure and high manufacturing cost.
Disclosure of Invention
The invention aims to provide a rock sample seepage detection device with a simple and reasonable structure.
In order to solve the technical problems, the technical scheme of the invention is as follows: the rock sample seepage detection device comprises a bottom frame, wherein a detection table is arranged on the bottom frame, and a first sealing plate and a second sealing plate are fixedly arranged on the detection table; the device comprises a first sealing plate, a second sealing plate, a third sealing plate and a fourth sealing plate, wherein the first sealing plate is arranged in parallel with the second sealing plate; the device comprises a bottom frame, a supporting frame, a driving seat, a top plate, a first connecting device, a third sealing plate, a fourth sealing plate, a second connecting device, a first connecting device, a second connecting device, a third sealing plate, a second sealing plate, a third sealing plate, a fourth sealing plate and a third sealing plate, wherein the supporting frame is fixed on the bottom frame and is positioned at the outer side of the detection table; the side face, facing the sample accommodating cavity, of the third sealing plate and the fourth sealing plate is fixed with a loading elastic bag body, and the loading elastic bag body is connected with a pressurizing seepage device.
As an optimized technical scheme, the pressurizing seepage device comprises a pressure-stabilizing water supply device communicated with the inner cavity of the loading elastic bag body, wherein the loading elastic bag body is provided with a plurality of overflow valves, and the overflow valves are positioned on the side wall of the loading elastic bag body, which faces the sample accommodating cavity; the overflow valve is arranged in the through hole, and the overflow valve is connected with the overflow block; also comprises a seepage water recovery device.
As an optimized technical scheme, the seepage water recovery device comprises a pore plate fixed on the first sealing plate and the second sealing plate, a seepage groove is arranged on the detection table at the position corresponding to the pore plate, and the seepage groove is connected with a collecting pipe.
As a preferable technical scheme, the inner side surfaces of the first sealing plate and the second sealing plate are provided with connecting grooves, the pore plate is provided with connecting bosses matched with the connecting grooves, and the pore plate is arranged on the first sealing plate or the second sealing plate in a sliding way through the connecting bosses and the connecting grooves; the pore plate is uniformly provided with a plurality of horizontally extending water seepage holes, the water seepage holes penetrate through the pore plate, and a passing gap is formed between the pore plate and the first sealing plate or between the pore plate and the second sealing plate.
As an preferable technical scheme, the first connecting device comprises four hydraulic cylinders fixed on the driving seat, and telescopic rods of the hydraulic cylinders are fixedly connected with the top plate.
As the preferable technical scheme, the second connecting device comprises a driving motor fixed on the upper surface of the top plate, an output shaft of the driving motor is connected with a screw rod, a threaded sleeve is sleeved on the outer side of the screw rod, and a first bracket and a second bracket which are respectively connected with the third sealing plate and the fourth sealing plate are arranged on the threaded sleeve.
As a preferable technical scheme, the third sealing plate and the fourth sealing plate are connected in an L shape and are integrated; the first sealing plate and the second sealing plate are connected in an L shape, and the first sealing plate and the second sealing plate are integrated.
As a preferable technical scheme, one end of the third sealing plate far away from the fourth sealing plate and one end of the fourth sealing plate far away from the third sealing plate are provided with sealing parts, the sealing parts are in a C shape, one end of each sealing part is connected with the third sealing plate or the fourth sealing plate, the other end of each sealing part abuts against the outer side wall of the first sealing plate or the outer side wall of the second sealing plate, and the loading elastic bag body extends into the sealing parts.
As a preferable technical scheme, a transfer tray is arranged on the underframe at the outer side of the third sealing plate or the fourth sealing plate, and the upper surface of the transfer tray is flush with the upper surface of the detection table.
Due to the adoption of the technical scheme, the rock sample seepage detection device is used for realizing linkage of the vertical loading device and the horizontal loading device, and can simplify the whole structure of equipment, and has the advantages of simple structure and low manufacturing cost.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic diagram of the structure of the present invention prior to loading;
FIG. 4 is a schematic diagram of the loaded structure of the present invention;
FIG. 5 is an enlarged view of a portion of area A of FIG. 3;
fig. 6 is a schematic structural view of a seal member in the embodiment of the present invention.
Detailed Description
As shown in fig. 1 and 2, the rock sample seepage detection device comprises a bottom frame 1, wherein a detection table 2 is arranged on the bottom frame 1, and a first sealing plate 4 and a second sealing plate 12 are fixedly arranged on the detection table 2; the first sealing plate 4 and the second sealing plate 12 are connected in an L shape, and the first sealing plate 4 and the second sealing plate 12 are preferably perpendicular to each other, so that the processing and positioning sealing of samples are facilitated, and the first sealing plate 4 and the second sealing plate 12 are integrated in order to reduce the number of sealing elements and reduce the sealing requirement. As shown in fig. 3 and 4, the detection table is provided with a first plane 26 and a second plane 25, the first sealing plate 4 and the second sealing plate 12 are arranged on the first plane 26 and are in sealing connection, and due to the arrangement of the second plane 25, a gap between the first sealing plate 4 and the second sealing plate 12 and the working surface of the detection table 2 forms a seepage groove 16. The top of seepage groove 16 is equipped with orifice plate 17, as shown in fig. 5, and orifice plate 17 is towards be equipped with on the side of first closing plate 4 or second closing plate 12 connect boss 28, be equipped with on the medial surface of first closing plate 4 with second closing plate 12 connect groove 29, orifice plate 17 is through connect boss 28 with connect groove 29 slip setting is in on the first closing plate 4 or the second closing plate 12. The orifice plate 17 is uniformly provided with a plurality of horizontally extending water seepage holes 27, the water seepage holes 27 penetrate through the orifice plate 17, and a passing gap 29 is formed between the orifice plate 17 and the first sealing plate 4 or the second sealing plate 12.
Further comprising loading means comprising a third sealing plate 13 arranged in parallel with the first sealing plate 4 and a fourth sealing plate 8 arranged in parallel with the second sealing plate 12; the third sealing plate 13 and the fourth sealing plate 8 are integrated. Still wrap and fix support frame 3 on chassis 1, support frame 3 is located detect the outside of platform 2, be equipped with drive seat 5 on the support frame 3, still including being located drive seat 5 with detect the roof 11 that the level extends between the platform 2, roof 11 is through its relatively adjustable detect the high first connecting device of platform 2 and fix on the drive seat 5, first connecting device includes four fixes pneumatic cylinders 6 on the drive seat 5, the telescopic link of pneumatic cylinder 6 with roof 11 fixed connection.
The third sealing plate 13 and the fourth sealing plate 8 are fixed on the top plate 11 through a second connecting device, the second connecting device comprises a driving motor 23 fixed on the upper surface of the top plate 11, the driving motor is preferably a servo motor, and the adjustment accuracy of the positions of the third sealing plate 13 and the fourth sealing plate 8 relative to the top plate 11 is high. The output shaft of the driving motor 23 is connected with a screw rod, a threaded sleeve 24 is sleeved on the outer side of the screw rod, and a first support 22 and a second support 21 which are respectively connected with the third sealing plate 13 and the fourth sealing plate 8 are arranged on the threaded sleeve 24. When the top plate 11 is at the lowest position, the detection platform 2, the first sealing plate 4, the second sealing plate 12, the third sealing plate 13, the fourth sealing plate 8 and the top plate 11 form a closed sample accommodating cavity together; the side surfaces of the third sealing plate 13 and the fourth sealing plate 8 facing the sample accommodating cavity are fixedly provided with a loading elastic bag body 9; the loading elastic bag body is connected with a pressurizing seepage device, the pressurizing seepage device comprises a pressure-stabilizing water supply device communicated with the inner cavity 18 of the loading elastic bag body 9, and the pressure-stabilizing water supply device is provided with a water flow pressure-stabilizing device for continuously providing water flow with stable pressure for the inner cavity 18. The loading elastic bag body 9 is provided with a plurality of overflow valves 19, and the overflow valves 19 are positioned on the side wall of the loading elastic bag body 9 facing the sample accommodating cavity. The hydraulic pressure relief device further comprises a pressing block 20, the pressing block 20 is provided with a plurality of through holes corresponding to the positions of the relief valves 19, the relief valves 19 are partially connected with the loading elastic bag body 9, and the portions of the relief valves 9 extend out of the loading elastic bag body 9 and extend into the through holes.
When the rock sample is tested, the top plate 11 is lifted, the sample is clung to the orifice plates 17 of the first sealing plate 4 and the second sealing plate 12, then the top plate 11 is controlled to descend, in order to avoid the influence of the orifice plates 17 and the pressing blocks 20 on the loading of the top plate 11, the heights of the pressing blocks 20 and the pressing blocks 17 relative to the upper surface of the detection table 2 are slightly smaller than the heights of the top plate 11 relative to the upper surface of the detection table 2, and the difference between the two is larger than the deformation of the sample. After the top plate 11 is loaded, high-pressure water is filled into the loading elastic bag body 9 through the water inlet pipe 14, when the pressure in the loading elastic bag body 9 is smaller than the opening pressure of the overflow valve 19, the loading elastic bag body 9 is expanded, a better seal is formed between the loading elastic bag body 9 and a part connected with the loading elastic bag body, and mainly, a better seal is formed between the loading elastic bag body 9 and the detection table 2, the first sealing plate 4, the second sealing plate 12 and the top plate 11. And the top plate 11 is sealed with the first sealing plate 4 and the second sealing plate 12 by sealing strips. The high pressure water is not only loaded to the sample through the compact 20, but also provides high pressure water for the percolation experiment. Water seeping through the gap of the sample is collected at the first sealing plate 4 and the second sealing plate 12 and through the seepage recovery pipe 15.
In order to further ensure that the end of the third sealing plate 13 away from the fourth sealing plate 8 and the end of the fourth sealing plate 8 away from the third sealing plate 13 are provided with sealing members 30, the sealing members 30 are C-shaped, one end of each sealing member 30 is connected with the third sealing plate 13 or the fourth sealing plate 8, the other end of each sealing member 30 abuts against the outer side wall of the first sealing plate 4 or the second sealing plate 12, and the loading elastic capsule 9 extends into each sealing member 30.
In order to facilitate the placement of the sample, a transfer tray 10 is disposed on the chassis 1 outside the third sealing plate 13 or the fourth sealing plate 8, and the upper surface of the transfer tray 10 is flush with the upper surface of the detection table 2.
The foregoing has shown and described the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a rock sample seepage flow detection device, includes the chassis, be equipped with the detection platform on the chassis, its characterized in that: the detection table is fixedly provided with a first sealing plate and a second sealing plate; the device comprises a first sealing plate, a second sealing plate, a third sealing plate and a fourth sealing plate, wherein the first sealing plate is arranged in parallel with the second sealing plate; the device comprises a bottom frame, a supporting frame, a driving seat, a top plate, a first connecting device, a third sealing plate, a fourth sealing plate, a second connecting device, a first connecting device, a second connecting device, a third sealing plate, a second sealing plate, a third sealing plate, a fourth sealing plate and a third sealing plate, wherein the supporting frame is fixed on the bottom frame and is positioned at the outer side of the detection table; the side surfaces of the third sealing plate and the fourth sealing plate, which face the sample accommodating cavity, are fixed with a loading elastic bag body, and the loading elastic bag body is connected with a pressurizing seepage device;
the pressurizing seepage device comprises a pressure-stabilizing water supply device communicated with the inner cavity of the loading elastic bag body, a plurality of overflow valves are arranged on the loading elastic bag body, and the overflow valves are positioned on the side wall of the loading elastic bag body, which faces the sample accommodating cavity; the overflow valve is arranged in the through hole, and the overflow valve is connected with the overflow block; the device also comprises a seepage water recovery device;
the seepage water recovery device comprises an orifice plate fixed on the first sealing plate and the second sealing plate, a seepage groove is arranged on the detection table at the position corresponding to the orifice plate, and the seepage groove is connected with a collecting pipe;
the inner side surfaces of the first sealing plate and the second sealing plate are provided with connecting grooves, the pore plate is provided with connecting bosses matched with the connecting grooves, and the pore plate is arranged on the first sealing plate or the second sealing plate in a sliding manner through the connecting bosses and the connecting grooves; a plurality of horizontally extending water seepage holes are uniformly formed in the pore plate, the water seepage holes penetrate through the pore plate, and a passing gap is formed between the pore plate and the first sealing plate or the second sealing plate;
the first connecting device comprises four hydraulic cylinders fixed on the driving seat, and telescopic rods of the hydraulic cylinders are fixedly connected with the top plate.
2. A rock sample seepage detection device according to claim 1, wherein: the second connecting device comprises a driving motor fixed on the upper surface of the top plate, an output shaft of the driving motor is connected with a screw rod, a threaded sleeve is sleeved on the outer side of the screw rod, and a first bracket and a second bracket which are respectively connected with the third sealing plate and the fourth sealing plate are arranged on the threaded sleeve.
3. A rock sample seepage detection device according to any one of claims 1 to 2, wherein: the third sealing plate and the fourth sealing plate are connected in an L shape and are integrated; the first sealing plate and the second sealing plate are connected in an L shape, and the first sealing plate and the second sealing plate are integrated.
4. A rock sample seepage detection device according to claim 3, wherein: the one end that the third closing plate kept away from the fourth closing plate and the one end that the fourth closing plate kept away from the third closing plate are equipped with sealing member, sealing member is the C shape just sealing member's one end with the third closing plate or the fourth closing plate is connected, sealing member's the other end support first closing plate or on the lateral wall of second closing plate, loading elastic bag body to extend in the sealing member.
5. A rock sample seepage detection device according to claim 1, wherein: the chassis on the outer side of the third sealing plate or the fourth sealing plate is provided with a transfer tray, and the upper surface of the transfer tray is flush with the upper surface of the detection table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811119857.XA CN108896468B (en) | 2018-09-25 | 2018-09-25 | Rock sample seepage flow detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811119857.XA CN108896468B (en) | 2018-09-25 | 2018-09-25 | Rock sample seepage flow detection device |
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| CN108896468A CN108896468A (en) | 2018-11-27 |
| CN108896468B true CN108896468B (en) | 2023-10-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110286077B (en) * | 2019-07-20 | 2021-12-07 | 深圳市实瑞建筑技术有限公司 | Concrete impermeability detection device and method |
| CN111272823B (en) * | 2020-03-17 | 2022-08-23 | 中国地质科学院地球物理地球化学勘查研究所 | Rock resistivity measuring device |
| CN114383950B (en) * | 2022-01-11 | 2024-05-31 | 中国矿业大学 | In-situ experimental method for semi-solid loose body |
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