CN104568595A - Coal bed mining floor grouting infiltration-reducing simulation testing system - Google Patents

Coal bed mining floor grouting infiltration-reducing simulation testing system Download PDF

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Publication number
CN104568595A
CN104568595A CN201510009748.2A CN201510009748A CN104568595A CN 104568595 A CN104568595 A CN 104568595A CN 201510009748 A CN201510009748 A CN 201510009748A CN 104568595 A CN104568595 A CN 104568595A
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CN
China
Prior art keywords
water
grouting
subtracts
pressure
oozes
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Pending
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CN201510009748.2A
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Chinese (zh)
Inventor
路畅
郭惟嘉
尹立明
陈军涛
孙文斌
李杨杨
王林
孙熙震
张保良
江宁
王海龙
张士川
王其锋
赵金海
王荣发
毕成
尚晓龙
张涛
李金平
王学武
孔德志
谢正正
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Shandong University of Science and Technology
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Shandong University of Science and Technology
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Application filed by Shandong University of Science and Technology filed Critical Shandong University of Science and Technology
Priority to CN201510009748.2A priority Critical patent/CN104568595A/en
Publication of CN104568595A publication Critical patent/CN104568595A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a coal bed mining floor grouting infiltration-reducing simulation testing system, belonging to the field of the deep rock mass engineering technology. The coal bed mining floor grouting infiltration-reducing simulation testing system comprises a testing machine, a grouting system and a water pressurizing system, wherein the testing machine comprises loading mechanisms arranged in X, Y and Z directions of the testing machine, the telescopic shaft of the loading mechanism penetrates through the outer wall of the testing machine, the inner end of the telescopic shaft is fixedly connected with a pressurizing plate, the edge periphery of the pressurizing plate is wrapped by a rubber binding band, the grouting system is connected with the testing machine by a connecting plate, and the water pressurizing system is connected with the testing machine by a pressurized water feeding device of a hydraulic system. The coal bed mining floor grouting infiltration-reducing simulation testing system has reasonable design, can vividly simulate the coal bed mining grouting phenomenon in high-pressure underwater under a condition of three-dimensional stress loading, and can achieve the good effect.

Description

A kind of seam mining floor grouting subtracts and oozes simulation experiment system
Technical field
The invention belongs to deep rock mass engineering project technical field, be specifically related to a kind of seam mining floor grouting and subtract and ooze simulation experiment system.
Background technology
Along with superficial part coal seam resource exploitation totally, China's coal-mine has now proceeded to the epoch of deep mining.The complex environment that deep mining faces " three high disturbances ", the Water Inrush disaster that wherein high-ground stress, high artesian cause is one of major casualty of deep mining.The reason of Water Inrush formation of marine disasters is that high-ground stress and high artesian act on floor strata, causes floor crack band and piestic water conducting, and water body, to workplace seepage flow, forms water inrush channel.It is the effective means of colliery control water bursting disaster to the slip casting of seat earth rock stratum.Therefore, carry out floor strata slip casting and subtract the experimental study of oozing aspect, for correct understanding Water Inrush passage Formation rule and control Water Inrush disaster, significant.
At present, the research method for floor grouting technology has theoretical analysis, numerical simulation, field measurement and shop experiment.On-the-spot actual slip casting effect difficulty is larger to utilize theoretical analysis to predict; Engineering geology parameters needed for method for numerical simulation is often difficult to measure; The sample of the data that field measurement gathers often in specific geologic province, the comprehensive detection for macroscopic appearance needs perfect further.Experimental Method in Laboratory can the scene of Simulation of Complex more all sidedly actual, can observe Mechanics Phenomenon and rule, for instructing engineering site practice of construction to provide foundation, be a kind of important means of research floor grouting theory.
The rock stratum slurry injection technique of Chinese scholars to Geotechnical Engineering and mining engineering field all has research, relevant slip casting experimental facilities as a kind of for simulating slip casting reinforcement experiment device, coal and rock grouting and reinforcing testing table and test method under the pilot system of adopting coal seam bottom water bursting and method thereof, a kind of pressure-bearing river channels, three-dimensional visualization moves water slip casting model assay systems and test method thereof etc.But existing patent seldom provides the simulated environment close to actual complex geologic condition, especially less to the test simulation of actual rock stratum under three-dimensional stress constraint, this can affect the accuracy of conclusion (of pressure testing) to on-the-spot guidance to a certain extent.
Summary of the invention
For the above-mentioned technical matters existed in prior art, the present invention proposes a kind of seam mining floor grouting to subtract and ooze simulation experiment system, reasonable in design, overcome the deficiencies in the prior art, simulate the seam mining slip casting phenomenon under triaxiality loading and high artesian more realistically, there is good effect.
To achieve these goals, the present invention adopts following technical scheme:
A kind of seam mining floor grouting subtracts and oozes simulation experiment system, comprise test board, filling system and hydraulic pressure system, in described test board, there is pressure chamber, described test board be included in test board X to, the load maintainer that Y-direction and Z-direction are arranged, the telescopic shaft of described load maintainer is through the outer wall testing board, the inner of described telescopic shaft is fixed with increased pressure board, described increased pressure board perimeter is wrapped up by rubber edge cover strip, described rubber edge cover strip is fixed on increased pressure board by rubber setscrew, described rubber edge cover strip has elasticity, high pressure compression can be born and serve the effect of sealing, described filling system is connected with test board by web joint, described hydraulic pressure system is connected with test board by the pressurized water feeder of hydraulic pressure system.
Preferably, described filling system is made up of grout outlet, booster pump device, slip casting connecting pipe and slurries storing barrel, and described grout outlet, booster pump device, slip casting connecting pipe are connected successively with slurries storing barrel.
Preferably, described hydraulic pressure system is made up of water filling port, water pump, hydraulic connection tubes, water pressure gauge and pressurized water feeder, and described water filling port, water pump, hydraulic connection tubes, water pressure gauge are connected successively with pressurized water feeder.
Preferably, the outside of described load maintainer connects servo-drive system by conduit under fluid pressure.
Preferably, be provided with mounting table below described test board, described mounting table is provided with the baffle plate fixed head for placing some baffle plates, and described baffle plate fixed head two ends offer some fixed orifices, and described baffle plate is tempered glass small front apron.
Preferably, water tank is provided with below described test board, described water tank upper surface is provided with the apopore for providing with steady pressure current, hydraulic pressure sensor and water flow sensor is provided with below described water tank apopore, described hydraulic pressure sensor and water flow sensor are by circuit connection data acquisition system, described tank circumference is also provided with tank, and described tank is provided with freeing port.
Preferably, described pressure chamber is formed by increased pressure board and water tank, places test specimen in described pressure chamber.
Preferably, described test specimen is made up of coal seam analog material and rock stratum analog material.
Preferably, analog material both sides, coal seam in described test specimen are provided with crossheading, some slip casting pins are provided with in rock stratum analog material below the analog material of described coal seam, described slip casting pin is designed to the slip casting pin with different pore size and length, described slip casting pin is connected with crossheading Grouting Pipe, and described crossheading Grouting Pipe is connected with the grout outlet of filling system.
Preferably, be also provided with strain gauge, strain transducer and pore pressure gauge in the rock stratum analog material below the analog material of described coal seam, described strain gauge, strain transducer are connected by circuit with data acquisition system (DAS) with pore pressure gauge.
The Advantageous Effects that the present invention brings:
The present invention proposes a kind of seam mining floor grouting to subtract and ooze simulation experiment system, compared with prior art, the present invention has set up the increased pressure board of X to, Y-direction and Z-direction three directions, and devise increased pressure board perimeter and wrapped up by rubber edge cover strip, avoid the wall and corner effect of increased pressure board, utilize extruded rubber edge cover strip to achieve the sealing of coal seam analog material and rock stratum analog material simultaneously, therefore simulate the seam mining slip casting phenomenon under triaxiality loading and high artesian more realistically.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is that seam mining floor grouting of the present invention subtracts the structural representation oozing simulation experiment system.
Fig. 2 is that seam mining floor grouting of the present invention subtracts the structural representation after oozing simulation experiment system placement test specimen.
Fig. 3 is that seam mining floor grouting of the present invention subtracts the increased pressure board structural drawing oozing simulation experiment system three direction.
Fig. 4 is that seam mining floor grouting of the present invention subtracts and oozes the test board side view that simulation experiment system is provided with baffle plate fixed head.
Fig. 5 is that seam mining floor grouting of the present invention subtracts the test board side view being provided with baffle plate fixed head after oozing simulation experiment system placement test specimen.
Fig. 6 is that seam mining floor grouting of the present invention subtracts the slip casting schematic diagram oozing simulation experiment system test specimen.
In figure, 1-increased pressure board; 2-rubber edge cover strip; 3-load maintainer; 4-web joint; 5-grout outlet; 6-booster pump device; 7-slip casting connecting pipe; 8-slurries storing barrel; 9-water filling port; 10-water pump; 11-hydraulic connection tubes; 12-water pressure gauge; 13-pressurized water feeder; 14 conduit under fluid pressures; 15-baffle plate mounting table; 16-baffle plate fixed head; 17-water tank; 18-apopore; 19-coal seam analog material; 20-rock stratum analog material; 21-crossheading; 22-slip casting pin; 23-crossheading Grouting Pipe; 24-tank; 25-freeing port; 26-rubber setscrew; 27-baffle plate fixed orifice; 28-baffle plate screw hole; 29-baffle plate fixed screw; 30-tempered glass small front apron; 31-telescopic shaft; 32-open-off cut space.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
As shown in figs 1 to 6, a kind of seam mining floor grouting subtracts and oozes simulation experiment system, comprises test board, has pressure chamber, also comprise filling system and hydraulic pressure system in described test board.The load maintainer 3 that the X that described test board is included in test board is arranged in, Y-direction and Z-direction, the telescopic shaft 31 of described load maintainer 3 is through the outer wall testing board, the inner of described telescopic shaft 31 is fixed with increased pressure board 1, described increased pressure board 1 perimeter is wrapped up by rubber edge cover strip 2, and described rubber edge cover strip 2 is fixed on increased pressure board 1 by rubber setscrew 26.
Described filling system is connected with test board by web joint 4, and described hydraulic pressure system is connected with test board by the pressurized water feeder 13 of hydraulic pressure system.Described filling system is made up of grout outlet 5, booster pump device 6, slip casting connecting pipe 7 and slurries storing barrel 8, and described grout outlet 5, booster pump device 6, slip casting connecting pipe 7 are connected successively with slurries storing barrel 8.
Described hydraulic pressure system is made up of water filling port 9, water pump 10, hydraulic connection tubes 11, water pressure gauge 12 and pressurized water feeder 13, and described water filling port 9, water pump 10, hydraulic connection tubes 11, water pressure gauge 12 are connected successively with pressurized water feeder 13.
The outside of described load maintainer 3 connects servo-drive system by conduit under fluid pressure 14.Mounting table 15 is provided with below described test board, described mounting table 15 is provided with the baffle plate fixed head 16 for placing some tempered glass small front aprons 30, described baffle plate fixed head 16 two ends offer some fixed orifices 27, utilize baffle plate fixed screw 29 to be separately fixed on fixed orifice 27 by some tempered glass small front aprons 30.
Be provided with water tank 17 below described test board, described water tank 17 upper surface is provided with the apopore 18 for providing with steady pressure current, and described apopore 18 is uniformly distributed and is provided with 48.Be provided with hydraulic pressure sensor and water flow sensor below the apopore 18 of described water tank 17, described hydraulic pressure sensor and water flow sensor are by circuit connection data acquisition system, and described apopore 18 can provide constant water pressure, and such as hydraulic pressure load is 1.2MPa.In described water tank 17, water is color water, is convenient to observe piestic water and leads liter and percolation phenomenon.Also be provided with tank 24 around described water tank 17, described tank 24 is provided with freeing port 25.
Described pressure chamber is formed by increased pressure board 1 and water tank 17, and place test specimen in described pressure chamber, described test specimen is made up of coal seam analog material 19 and rock stratum analog material 20.Coal seam analog material 19 both sides in described test specimen are provided with crossheading 21, some slip casting pins 22 are provided with in rock stratum analog material 20 below described coal seam analog material 19, described slip casting pin 22 is designed to the slip casting pin 22 with different pore size and length, described slip casting pin 22 is connected with crossheading Grouting Pipe 23, and described crossheading Grouting Pipe 23 is connected with the grout outlet 5 of filling system.Also be provided with strain gauge, strain transducer and pore pressure gauge in rock stratum analog material 20 below described coal seam analog material 19, described strain gauge, strain transducer are connected by circuit with data acquisition system (DAS) with pore pressure gauge.
This kind of seam mining floor grouting subtracts the utilization process of oozing simulation experiment system, first utilizes baffle plate fixed screw 29 to be separately fixed on fixed orifice 27 by some tempered glass small front aprons 30.According to the combination of actual colliery formation lithology, lay coal seam analog material 19 and rock stratum analog material 20 by the layering of test board breach, coal seam analog material 19 is test specimen with the entirety of rock stratum analog material 20.Be rock stratum analog material 20 at water tank 17 upper surface.When having laid coal seam analog material 19, slip casting pin 22 is inserted in the rock stratum analog material 20 below coal seam along different angles and the degree of depth, each slip casting pin 22 connects crossheading Grouting Pipe 23, crossheading Grouting Pipe 23 connects the grout outlet 5 of filling system, utilizes filling system to be injected by slurries in the rock stratum analog material 20 of bottom; Secondly, plank is placed at crossheading 21 place, coal seam analog material 19 both sides.According to the overall height of test specimen, upwards increase successively and fix tempered glass small front apron 30, after test specimen is laid, utilizing baffle plate fixed screw 29 to be fixed on by large for tempered glass baffle plate on the baffle plate screw hole 28 of test board indentation, there, form complete obturator.Then the tempered glass small front apron 30 of coal seam analog material 19 respective layer is removed, and extract the plank at crossheading 21 place out, form open-off cut space 32.Utilize long iron plate to excavate coal seam analog material 19 from the place of open-off cut space 32, the large baffle plate of tempered glass settled by test board indentation, there is observed and then control production progress.Some fixed orifices 27 at baffle plate fixed head 16 two ends arrange intensive, can the tempered glass small front apron 30 of supporting differing heights, to adapt to the similar materials of different levels height distribution.
All around and upper and lower pressurized operation is carried out to load maintainer 3 pairs of test specimens of, Y-direction and Z-direction by X.Pressure is carried on test specimen uniformly by increased pressure board 1, add pressure while direction being subject to X, Y and Z tri-, advance along with increased pressure board 1 loads, between increased pressure board 1 can not Contact, the rubber edge cover strip 2 of increased pressure board 1 perimeter can extrude contact, avoid the wall and corner effect of the increased pressure board 1 in three directions, utilize extruded rubber edge cover strip 2 to achieve again the sealing of test specimen simultaneously.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited in above-mentioned citing, and the change that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement also should belong to protection scope of the present invention.

Claims (10)

1. a seam mining floor grouting subtracts and oozes simulation experiment system, comprise test board, in described test board, there is pressure chamber, it is characterized in that: also comprise filling system and hydraulic pressure system, described test board be included in test board X to, the load maintainer that Y-direction and Z-direction are arranged, the telescopic shaft of described load maintainer is through the outer wall testing board, the inner of described telescopic shaft is fixed with increased pressure board, described increased pressure board perimeter is wrapped up by rubber edge cover strip, described filling system is connected with test board by web joint, described hydraulic pressure system is connected with test board by the pressurized water feeder of hydraulic pressure system.
2. a kind of seam mining floor grouting according to claim 1 subtracts and oozes simulation experiment system, it is characterized in that: described filling system is made up of grout outlet, booster pump device, slip casting connecting pipe and slurries storing barrel, described grout outlet, booster pump device, slip casting connecting pipe are connected successively with slurries storing barrel.
3. a kind of seam mining floor grouting according to claim 1 subtracts and oozes simulation experiment system, it is characterized in that: described hydraulic pressure system is made up of water filling port, water pump, hydraulic connection tubes, water pressure gauge and pressurized water feeder, and described water filling port, water pump, hydraulic connection tubes, water pressure gauge are connected successively with pressurized water feeder.
4. a kind of seam mining floor grouting according to claim 1 subtracts and oozes simulation experiment system, it is characterized in that: the outside of described load maintainer connects servo-drive system by conduit under fluid pressure.
5. a kind of seam mining floor grouting according to claim 1 subtracts and oozes simulation experiment system, it is characterized in that: below described test board, be provided with mounting table, described mounting table is provided with the baffle plate fixed head for placing some baffle plates, and described baffle plate fixed head two ends offer some fixed orifices.
6. a kind of seam mining floor grouting according to claim 1 subtracts and oozes simulation experiment system, it is characterized in that: below described test board, be provided with water tank, described water tank upper surface is provided with the apopore for providing with steady pressure current, hydraulic pressure sensor and water flow sensor is provided with below described water tank apopore, described hydraulic pressure sensor and water flow sensor are by circuit connection data acquisition system, described tank circumference is also provided with tank, and described tank is provided with freeing port.
7. a kind of seam mining floor grouting according to claim 6 subtracts and oozes simulation experiment system, it is characterized in that: described pressure chamber is formed by increased pressure board and water tank, places test specimen in described pressure chamber.
8. a kind of seam mining floor grouting according to claim 7 subtracts and oozes simulation experiment system, it is characterized in that: described test specimen is made up of alternatively distributed coal seam analog material and rock stratum analog material.
9. a kind of seam mining floor grouting according to claim 8 subtracts and oozes simulation experiment system, it is characterized in that: the analog material both sides, coal seam in described test specimen are provided with crossheading, some slip casting pins are provided with in rock stratum analog material below the analog material of described coal seam, described slip casting pin is connected with crossheading Grouting Pipe, and described crossheading Grouting Pipe is connected with the grout outlet of filling system.
10. a kind of seam mining floor grouting according to claim 8 subtracts and oozes simulation experiment system, it is characterized in that: be also provided with strain gauge, strain transducer and pore pressure gauge in the rock stratum analog material below the analog material of described coal seam, described strain gauge, strain transducer are connected by circuit with data acquisition system (DAS) with pore pressure gauge.
CN201510009748.2A 2015-01-09 2015-01-09 Coal bed mining floor grouting infiltration-reducing simulation testing system Pending CN104568595A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104865177A (en) * 2015-06-18 2015-08-26 重庆大学 Large-scale bi-dimensional fractured rock mass shearing seepage meter
CN105137048A (en) * 2015-09-28 2015-12-09 北京建筑大学 Stratum grouting simulation system
CN105372390A (en) * 2015-10-27 2016-03-02 山东大学 Three-dimensional grouting testing device and testing method
CN105716950A (en) * 2016-03-29 2016-06-29 山东科技大学 Strip coal pillar stability testing device and testing method
CN106814016A (en) * 2016-12-29 2017-06-09 华北科技学院 The analogy method of slurry filling imitation device
CN107389898A (en) * 2017-07-24 2017-11-24 西安科技大学 Dynamic current Flooding in Borehole consolidation grouting Diffusion Law visual Simulation experimental provision and method
CN108444885A (en) * 2018-04-03 2018-08-24 山东大学 Tunnel fills structure seepage flow, erosion and stress coupling instability Mechanism experimental rig and method
CN108918249A (en) * 2018-08-20 2018-11-30 山东科技大学 Coal-bed flooding wetting, which influences to adopt, acts lower coal deformation test method
CN108952718A (en) * 2018-07-09 2018-12-07 安徽理工大学 A kind of slip casting recovery method suitable for inclined seam
CN110132523A (en) * 2019-06-11 2019-08-16 中国科学院寒区旱区环境与工程研究所 A kind of air fairing of dust storm wind-tunnel
CN111006951A (en) * 2019-11-14 2020-04-14 湖南大学 Indoor grouting test device and simulated grouting test method

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104865177B (en) * 2015-06-18 2017-10-24 重庆大学 A kind of two-dimentional crack rock shearing seepage instrument of large scale
CN104865177A (en) * 2015-06-18 2015-08-26 重庆大学 Large-scale bi-dimensional fractured rock mass shearing seepage meter
CN105137048A (en) * 2015-09-28 2015-12-09 北京建筑大学 Stratum grouting simulation system
CN105372390A (en) * 2015-10-27 2016-03-02 山东大学 Three-dimensional grouting testing device and testing method
CN105716950A (en) * 2016-03-29 2016-06-29 山东科技大学 Strip coal pillar stability testing device and testing method
CN105716950B (en) * 2016-03-29 2018-05-29 山东科技大学 Strip coal pillar stabilizing test device and test method
CN106814016A (en) * 2016-12-29 2017-06-09 华北科技学院 The analogy method of slurry filling imitation device
CN107389898A (en) * 2017-07-24 2017-11-24 西安科技大学 Dynamic current Flooding in Borehole consolidation grouting Diffusion Law visual Simulation experimental provision and method
CN108444885A (en) * 2018-04-03 2018-08-24 山东大学 Tunnel fills structure seepage flow, erosion and stress coupling instability Mechanism experimental rig and method
CN108952718A (en) * 2018-07-09 2018-12-07 安徽理工大学 A kind of slip casting recovery method suitable for inclined seam
CN108918249A (en) * 2018-08-20 2018-11-30 山东科技大学 Coal-bed flooding wetting, which influences to adopt, acts lower coal deformation test method
CN108918249B (en) * 2018-08-20 2020-07-10 山东科技大学 Coal body deformation test method under coal seam water injection wetting influence mining action
CN110132523A (en) * 2019-06-11 2019-08-16 中国科学院寒区旱区环境与工程研究所 A kind of air fairing of dust storm wind-tunnel
CN110132523B (en) * 2019-06-11 2020-05-05 中国科学院西北生态环境资源研究院 Air rectifying device of wind sand wind tunnel
CN111006951A (en) * 2019-11-14 2020-04-14 湖南大学 Indoor grouting test device and simulated grouting test method

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