CN115032090A - Visual test system for roadway surrounding rock evolution process under action of non-uniform impact load - Google Patents
Visual test system for roadway surrounding rock evolution process under action of non-uniform impact load Download PDFInfo
- Publication number
- CN115032090A CN115032090A CN202210639106.0A CN202210639106A CN115032090A CN 115032090 A CN115032090 A CN 115032090A CN 202210639106 A CN202210639106 A CN 202210639106A CN 115032090 A CN115032090 A CN 115032090A
- Authority
- CN
- China
- Prior art keywords
- impact load
- test piece
- surrounding rock
- roadway
- evolution process
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 106
- 239000011435 rock Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000009471 action Effects 0.000 title claims abstract description 30
- 230000008569 process Effects 0.000 title claims abstract description 28
- 230000000007 visual effect Effects 0.000 title claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 21
- 230000003068 static effect Effects 0.000 claims abstract description 8
- 235000019687 Lamb Nutrition 0.000 claims abstract description 4
- 239000010720 hydraulic oil Substances 0.000 claims description 7
- 239000000523 sample Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 101150067113 prxl2a gene Proteins 0.000 claims 3
- 238000004891 communication Methods 0.000 claims 1
- 238000011161 development Methods 0.000 description 10
- 238000005065 mining Methods 0.000 description 7
- 239000003245 coal Substances 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- QOFFJEBXNKRSPX-ZDUSSCGKSA-N pemetrexed Chemical compound C1=N[C]2NC(N)=NC(=O)C2=C1CCC1=CC=C(C(=O)N[C@@H](CCC(O)=O)C(O)=O)C=C1 QOFFJEBXNKRSPX-ZDUSSCGKSA-N 0.000 description 3
- 229960005079 pemetrexed Drugs 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 125000003003 spiro group Chemical group 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0658—Indicating or recording means; Sensing means using acoustic or ultrasonic detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material 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 visual test system for a roadway surrounding rock evolution process under the action of non-uniform impact loads, which comprises a test piece box component, an impact load component for carrying out impact loads on a test piece in the test piece box component and a monitoring component for monitoring data of the test piece in the test piece box component, wherein the test piece box component comprises a box body and the test piece placed in the box body, and the impact load component comprises a plurality of impact load units distributed at the upper end, the left end and the right end of the test piece box component. According to the invention, each impact load unit can independently apply impact load or static load through the controller, and can also realize cooperative loading of a plurality of units, and meanwhile, the front high-strength transparent lamb plate and the rear high-strength transparent lamb plate can realize real-time monitoring of deformation of surrounding rock of the roadway when stress is applied, so that a visual test of the evolution process of the surrounding rock of the roadway under the action of non-uniform impact load is realized.
Description
Technical Field
The invention belongs to the technical field of stope surrounding rock deformation evolution test systems, and particularly relates to a visual test system for a roadway surrounding rock evolution process under the action of non-uniform impact loads.
Background
Along with the increase of the mining depth of a mine, deep mining can face the disturbance of high ground stress and impact dynamic load, so that the supporting requirement of the existing roadway supporting condition is difficult to meet, and further instability damage occurs, and a major disaster is caused. At present, the action mechanism of the impact load of deep mining on the roadway is lack of deep research, and the effective inversion can be realized by utilizing a similar material physical test, so that the development rule of the roadway surrounding rock under the action of the non-uniform impact load is necessary to be researched.
For the research of the evolution rule of the surrounding rock of the roadway under the action of the non-uniform impact load under the deep mining condition, scholars at home and abroad mainly adopt theoretical analysis methods such as mine pressure and the like to carry out a loading test on an ideal coal rock mass under the action of the uniform load, and can not embody a stress field of the non-uniform impact load generated by multi-azimuth elastic energy release of the coal rock mass possibly generated in the deep mining process, so that the deformation and damage characteristics of the surrounding rock of the roadway under the action of the deep non-uniform impact load can be scientifically and effectively researched, and the evolution rule of the deformation of the surrounding rock of the roadway under the action of the deep non-uniform impact load is very important. The research results are beneficial to the exploration of the deformation evolution mechanism of the surrounding rock of the roadway under the action of the deep impact load, the development of the deep roadway supporting technology is promoted, and the method has important significance for deep mining.
Disclosure of Invention
Objects of the invention
In order to overcome the defects, the invention aims to provide a visual test system for the evolution process of the surrounding rock of the roadway under the action of non-uniform impact load, so as to solve the technical problem.
(II) technical scheme
In order to achieve the purpose, the technical scheme provided by the application is as follows:
the utility model provides a visual test system of tunnel country rock evolution process under non-uniform impact load effect, includes test piece case subassembly, carries out impact load's impact load subassembly and monitoring test piece data's monitoring subassembly to test piece in the test piece case subassembly, test piece case subassembly includes the box and places the test piece in the box, the impact load subassembly includes that the several distributes in the impact load unit of the upper end of test piece case subassembly, left end and right-hand member, the loading pressure head of impact load unit passes the box and laminates with the test piece mutually, communicating tunnel around being equipped with on the test piece, the monitoring unit is including installing high frequency stress sensor, high frequency strain sensor, acoustic emission system and the digital speckle system on the test piece.
Preferably, the bottom spiro union of box is installed on the base, be equipped with on the inner wall of box with the corresponding pressure head recess of loading pressure head, the outside of pressure head recess is equipped with the through-hole that corresponds with flexible end, both sides all are equipped with high transparent perm board around the box, high transparent perm board is even to be divided into 4-12, and every all can dismouting alone is on high transparent perm board.
Preferably, the impact load assembly comprises an impact frame, the impact load unit comprises a hydraulic oil cylinder installed on the impact frame, the telescopic end of the hydraulic oil cylinder penetrates through the box body to be connected with the loading pressure head, and the impact load unit comprises a dynamic load actuator.
Preferably, a support rod is arranged between the impact frame and the box body.
Preferably, the upper end of the test piece box assembly is provided with 10-18 impact load units, the left end and the right end of the test piece box assembly are respectively provided with 2-8 impact load units, impact load or static load can be independently applied among the impact load units, and the loading strength provided by the impact load units is 0-50 MPa.
Preferably, the high-frequency stress sensor is paved in the test piece layer by layer when the test piece is paved, the high-frequency strain sensor is arranged on the surface of the roadway when the test piece is paved, and the high-frequency stress sensor and the high-frequency strain sensor are electrically connected with the high-frequency data acquisition system.
Preferably, the acoustic emission system comprises an acoustic emission probe installed on the high-intensity transparent perm plate, the digital speckle system comprises digital speckle targets, and the digital speckle targets are installed at the front end and the rear end of the test piece.
Preferably, the impact load unit, the high-frequency data acquisition system, the acoustic emission system and the digital speckle system are all electrically connected with the controller.
Has the beneficial effects that:
the invention discloses a visual test system for a surrounding rock evolution process of a roadway under the action of non-uniform impact loads, compared with the prior art, the system is provided with 16 impact load units at the top, 4 impact load units are respectively arranged on the left side and the right side, each impact load unit can independently apply impact loads or static loads through a controller, and can also realize the cooperative loading of a plurality of units, meanwhile, front and rear high-strength transparent pams can realize the real-time monitoring of deformation of the surrounding rock of the roadway when stress is applied, so that the visual test of the surrounding rock evolution process of the roadway under the action of the non-uniform impact loads can be realized, all loading units can provide the loading strength of 0-100 MPa, and various experimental data such as high-frequency stress, high-frequency displacement, crack development conditions, surface crack development and the like can be collected in real time.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a side view of an embodiment according to the present invention;
FIG. 3 is a top view of an embodiment according to the present invention;
FIG. 4 is a schematic view of a monitoring assembly of a test piece according to one embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings 1 to 4 in conjunction with the following detailed description. It is to be understood that these descriptions are only illustrative and are not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The invention provides a visual test system for a roadway surrounding rock evolution process under the action of non-uniform impact loads, which comprises a test piece box assembly, an impact load assembly for carrying out impact loads on a test piece in the test piece box assembly and a monitoring assembly for monitoring test piece data.
The test piece box subassembly includes box 11 and places test piece 4 in box 11, test piece 4 and the setting of box 11 clearance, the bottom spiro union of box 11 is installed on base 3, prevents that box 11 from producing the displacement when carrying out the impact load, be equipped with the pressure head recess corresponding with loading pressure head 9 on the inner wall of box 11, loading pressure head 9 places the inboard and the inner wall parallel and level of box 11 that make loading pressure head 9 in the pressure head recess, the outside of pressure head recess is equipped with the through-hole that corresponds with flexible end, both sides all are equipped with high transparent perm board 12 around the box, are convenient for observe the inside crack condition of developing of test piece 4, the even branch of high transparent perm board 12 is 4-12, and every all can be dismantled and adorned on high transparent perm board 12 alone, is convenient for install digital speckle target 20.
The impact load subassembly includes that the several distributes impact load unit 2 at the upper end of test piece box subassembly, left end and right-hand member, impact load unit 2's loading pressure head 9 passes box 11 and laminates mutually with test piece 4, test piece 4 includes rock mass 18, be equipped with coal seam 19 in the rock mass 18, communicating tunnel 17 around being equipped with in the coal seam 19, one side of tunnel 17 is equipped with collecting space area 15, be equipped with coal pillar 16 between collecting space area 15 and the tunnel 17.
The impact load assembly comprises an impact frame 1, the impact load unit 2 comprises a hydraulic oil cylinder 7 installed on the impact frame 1, the telescopic end of the hydraulic oil cylinder 7 penetrates through a box body 11 to be connected with a loading pressure head 9, and the impact load unit 2 comprises a dynamic load actuator 6. The loading device is characterized in that the loading pressure head 9 is driven to carry out static load or impact load on a test piece under the action of the hydraulic oil cylinder 7, a support rod 5 is arranged between the impact frame 1 and the box body 11, and the support rod 5 is used for supporting the box body 11.
The upper end of test piece case subassembly is equipped with 10-18 impact load units, the upper end of test piece case subassembly is equipped with 16 impact load units 2, the left and right sides both ends of test piece case subassembly are equipped with 2-8 impact load units 2 respectively, both ends are equipped with 4 impact load units 2 respectively about the test piece case subassembly, each can independently realize exerting impact load or static load between the impact load unit 2, the loading intensity that the impact load unit provided is 0-50 MPa.
The monitoring unit comprises a high-frequency stress sensor 14, a high-frequency strain sensor 13, an acoustic emission system and a digital speckle system which are arranged on the test piece. The high-frequency stress sensor 14 is paved in the test piece 3 layer by layer when the test piece 4 is paved, and is used for monitoring pressure change values of different positions in the test piece 3 when the impact load acts, the high-frequency strain sensor 13 is arranged on the surface of the roadway 17 when the test piece 4 is paved, is used for monitoring the surface displacement condition of the roadway 17 in the test piece 4 when the impact load acts, and the high-frequency stress sensor 14 and the high-frequency strain sensor 13 are electrically connected with a high-frequency data acquisition system. The acoustic emission system comprises an acoustic emission probe 21 arranged on the high-strength transparent Perm plate 12 and used for monitoring the crack development condition inside the test piece 4, the digital speckle system comprises digital speckle targets 20, and the digital speckle targets 20 are arranged on the surfaces of the test piece 4 at the front end and the rear end of the test piece 4 and used for monitoring the development condition of surrounding rock cracks of the front surface roadway 17 and the rear surface roadway 17.
The impact load unit, the high-frequency data acquisition system, the acoustic emission system and the digital speckle system are electrically connected with the controller. The controller is used for total control in the whole process, the automation degree is high, and the requirement on operators is low.
The invention discloses a use method of a visual test system for a roadway surrounding rock evolution process under the action of non-uniform impact loads, which specifically comprises the following steps:
a, laying a large-scale test piece, firstly testing the mechanical property of each layer of rock according to the engineering geological condition of a specific working condition, then starting laying after carrying out similar proportioning by using materials according to a similar principle, combining a bottom plate, left and right side plates and a rear side high-strength transparent perm plate 12 of a box body 11 of the test piece box component before laying, embedding a high-frequency stress sensor 14 and a high-frequency strain sensor 13 into the test piece 4 according to the requirement of a test scheme in the laying process of the test piece 4, gradually installing the front side high-strength transparent perm plate 12 along with the increase of the laying thickness, finally laying a large-size test piece which is 1m multiplied by 1m, and applying a certain static load to the top of the test piece after laying.
b, standing the processed test piece for one month, airing, after the test piece is dried thoroughly and stably, sequentially removing the high-strength transparent pemetrexed plates 12 on the front side and the rear side, mounting the digital speckle targets 20 when one test piece is removed, then mounting the high-strength transparent pemetrexed plates 12 to the original position, sequentially and circularly carrying out, fully arranging the digital speckle targets 20 on the front side and the rear side, and finally arranging the acoustic emission probes at the test designated positions of the high-strength transparent pemetrexed plates 12.
c, removing a pair of high-strength transparent pemer plates 12 corresponding to the front side and the rear side according to test requirements, then performing mechanical excavation, simulating a coal mining process, simultaneously controlling each impact load unit 2 through an impact load assembly, applying non-uniform impact load to the test piece 4, simultaneously monitoring and analyzing various test data such as high-frequency stress, high-frequency displacement, crack development conditions and surface crack development in real time through a monitoring assembly, and forming a test curve and a cloud chart.
The invention discloses a visual test system for a roadway surrounding rock evolution process under the action of non-uniform impact loads, compared with the prior art, the system is provided with 16 impact load units at the top, 4 impact load units are respectively arranged on the left side and the right side, each impact load unit can independently apply impact loads or static loads through a controller, and can also realize the cooperative loading of a plurality of units, meanwhile, front and rear high-strength transparent lamb plates can realize the real-time monitoring of the deformation of the roadway surrounding rock when stress is applied, so that the visual test of the roadway surrounding rock evolution process under the action of the non-uniform impact loads can be realized, all loading units can provide the loading strength of 0-100 MPa, and various experimental data such as high-frequency stress, high-frequency displacement, crack development conditions, surface crack development and the like can be acquired in real time.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a visual test system of tunnel country rock evolution process under non-equipartition impact load effect, a serial communication port, including test piece case subassembly, carry out impact load's impact load subassembly and monitoring test piece data's monitoring subassembly to the test piece in the test piece case subassembly, test piece case subassembly includes the box and places the test piece in the box, the impact load subassembly includes that the several distributes the impact load unit at the upper end of test piece case subassembly, left end and right-hand member, the loading pressure head of impact load unit passes the box and laminates mutually with the test piece, communicating tunnel around being equipped with on the test piece, monitoring unit is including installing high frequency stress sensor, high frequency strain sensor, acoustic emission system and the digital speckle system on the test piece.
2. The system for visually testing the evolution process of the surrounding rock of the roadway under the action of the non-uniform impact load as claimed in claim 1, wherein the bottom of the box body is installed on the base in a threaded manner, a pressure head groove corresponding to the loading pressure head is formed in the inner wall of the box body, a through hole corresponding to the telescopic end is formed in the outer side of the pressure head groove, the front side and the rear side of the box body are respectively provided with the high-transparency pamm plate, the high-transparency pamm plates are uniformly divided into 4-12 pieces, and each piece can be independently installed and removed on the high-transparency pamm plate.
3. The system for visually testing the evolution process of the surrounding rock of the roadway under the action of the non-uniform impact load as claimed in claim 1, wherein the impact load assembly comprises an impact frame, the impact load unit comprises a hydraulic oil cylinder installed on the impact frame, the telescopic end of the hydraulic oil cylinder penetrates through the box body to be connected with the loading pressure head, and the impact load unit comprises a dynamic load actuator.
4. The system for visually testing the evolution process of the surrounding rock of the roadway under the action of the non-uniform impact load as claimed in claim 3, wherein a support rod is arranged between the impact frame and the box body.
5. The system for visually testing the evolution process of the surrounding rock of the roadway under the action of the non-uniform impact load as claimed in claim 1, wherein 10-18 impact load units are arranged at the upper end of the test piece box assembly, 2-8 impact load units are respectively arranged at the left end and the right end of the test piece box assembly, the impact load units can independently apply the impact load or the static load, and the loading strength provided by the impact load units is 0-50 MPa.
6. The visual test system of roadway surrounding rock evolution process under action of non-uniform impact load according to claim 1, wherein the high-frequency stress sensor is laid in the test piece layer by layer when the test piece is laid, the high-frequency strain sensor is arranged on the surface of the roadway when the test piece is laid, and the high-frequency stress sensor is electrically connected with the high-frequency strain sensor and the high-frequency data acquisition system.
7. The system for visually testing the evolution process of the surrounding rock of the roadway under the action of the non-uniform impact load as claimed in claim 1, wherein the acoustic emission system comprises an acoustic emission probe installed on a high-strength transparent lamb plate, the digital speckle system comprises digital speckle targets, and the digital speckle targets are installed at the front end and the rear end of the test piece.
8. The system for the visual test of the evolution process of the surrounding rock of the roadway under the action of the non-uniform impact load according to the claims 1 to 7, wherein the impact load unit, the high-frequency data acquisition system, the acoustic emission system and the digital speckle system are electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210639106.0A CN115032090A (en) | 2022-06-07 | 2022-06-07 | Visual test system for roadway surrounding rock evolution process under action of non-uniform impact load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210639106.0A CN115032090A (en) | 2022-06-07 | 2022-06-07 | Visual test system for roadway surrounding rock evolution process under action of non-uniform impact load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115032090A true CN115032090A (en) | 2022-09-09 |
Family
ID=83123532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210639106.0A Pending CN115032090A (en) | 2022-06-07 | 2022-06-07 | Visual test system for roadway surrounding rock evolution process under action of non-uniform impact load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115032090A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062182A (en) * | 2014-05-16 | 2014-09-24 | 山东科技大学 | Testing system for evolution process of deep mining stress field |
| CN107478804A (en) * | 2017-08-11 | 2017-12-15 | 山东科技大学 | Simulate the non-uniform loading method of different zones coal body stress under mining influence |
| CN108643909A (en) * | 2018-04-19 | 2018-10-12 | 山东科技大学 | A kind of working face extraction tunnel initating optimization of region method |
| CN109490086A (en) * | 2018-12-24 | 2019-03-19 | 山东科技大学 | A kind of supporting roadway surrounding rock strength test device and strength determining method |
| CN114034623A (en) * | 2021-11-22 | 2022-02-11 | 山东科技大学 | Stress-seepage coupling evolution visualization system under action of non-uniform load |
| CN114323972A (en) * | 2021-12-07 | 2022-04-12 | 山东科技大学 | Three-dimensional dynamic and static load test system and method for simulating deep roadway excavation |
-
2022
- 2022-06-07 CN CN202210639106.0A patent/CN115032090A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062182A (en) * | 2014-05-16 | 2014-09-24 | 山东科技大学 | Testing system for evolution process of deep mining stress field |
| CN107478804A (en) * | 2017-08-11 | 2017-12-15 | 山东科技大学 | Simulate the non-uniform loading method of different zones coal body stress under mining influence |
| CN108643909A (en) * | 2018-04-19 | 2018-10-12 | 山东科技大学 | A kind of working face extraction tunnel initating optimization of region method |
| CN109490086A (en) * | 2018-12-24 | 2019-03-19 | 山东科技大学 | A kind of supporting roadway surrounding rock strength test device and strength determining method |
| CN114034623A (en) * | 2021-11-22 | 2022-02-11 | 山东科技大学 | Stress-seepage coupling evolution visualization system under action of non-uniform load |
| CN114323972A (en) * | 2021-12-07 | 2022-04-12 | 山东科技大学 | Three-dimensional dynamic and static load test system and method for simulating deep roadway excavation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108732024B (en) | Test system and test method for simulating water inrush of bottom plate under different ground stress conditions | |
| CN108386177B (en) | Real-time monitoring experiment system and method for three-dimensional multilayer multi-well fracturing support crack | |
| CN103353516B (en) | Large movable lateral uplifting composite lading slope physical model test apparatus | |
| CN104200734B (en) | A kind of method of inverting coal seam bottom water bursting | |
| CN105204088B (en) | Tectonic stress field simulation test device and method | |
| CN108007800B (en) | Model test device and test method for circular dynamic load soil body settlement | |
| US11921088B2 (en) | Thermal-stress-pore pressure coupled electromagnetic loading triaxial Hopkinson bar system and test method | |
| CN104297457B (en) | Three-dimensional grouting model test device and method | |
| CN104266913A (en) | Mining failure simulation test device for mine working face floor | |
| CN108204916B (en) | Shear-low temperature coupling experimental device and method for penetrating fracture | |
| CN104237024A (en) | Mine working face floor mining damage simulating experiment method | |
| CN108894779B (en) | Coal gas extraction borehole instability discrimination test device and method | |
| CN105319154A (en) | Tunnel seepage instability model test device and test method with ground pressure and water pressure controllable | |
| CN102680647B (en) | Coal-rock mass grouting reinforcement test bed and test method | |
| CN109001040B (en) | Rock fracturing simulator | |
| CN111141616A (en) | Experimental device and experimental method for simulating deformation of seam-net modified stratum casing | |
| CN104897467A (en) | True-triaxial loading and unloading rock stress relaxation test device and test method | |
| CN107727424B (en) | Geomechanical model experimental device and method for stability of bedding rock slope | |
| CN103868799A (en) | Rock mechanical characteristic analyzer for non-conventional oil-gas reservoir stratum | |
| CN204575356U (en) | A kind of based on coal-face supporting and the experimental provision moving frame dynamic similation | |
| CN107290224A (en) | Microwave heating equipment and experimental method for true triaxial hydraulic fracturing simulated experiment | |
| CN208636153U (en) | Simulate the pilot system of differently stress condition lower plate gushing water | |
| WO2020151091A1 (en) | Test device and method for simulating breakage of roof rock beam | |
| CN108414347B (en) | Multifunctional test system capable of simulating deep fault formation and crack development | |
| CN210720389U (en) | Tunnel excavation process analogue test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |