CN115184239A - Visual test device and method for fractured coal rock mass permeation grouting - Google Patents
Visual test device and method for fractured coal rock mass permeation grouting Download PDFInfo
- Publication number
- CN115184239A CN115184239A CN202210835530.2A CN202210835530A CN115184239A CN 115184239 A CN115184239 A CN 115184239A CN 202210835530 A CN202210835530 A CN 202210835530A CN 115184239 A CN115184239 A CN 115184239A
- Authority
- CN
- China
- Prior art keywords
- grouting
- rock mass
- coal rock
- slurry
- barrel
- 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
- 239000011435 rock Substances 0.000 title claims abstract description 71
- 239000003245 coal Substances 0.000 title claims abstract description 64
- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 230000000007 visual effect Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000002002 slurry Substances 0.000 claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 238000012544 monitoring process Methods 0.000 claims abstract description 20
- 239000004568 cement Substances 0.000 claims abstract description 19
- 239000000700 radioactive tracer Substances 0.000 claims abstract description 18
- 238000009792 diffusion process Methods 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 238000010998 test method Methods 0.000 claims abstract description 9
- JKYKXTRKURYNGW-UHFFFAOYSA-N 3,4-dihydroxy-9,10-dioxo-9,10-dihydroanthracene-2-sulfonic acid Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C(O)=C(O)C(S(O)(=O)=O)=C2 JKYKXTRKURYNGW-UHFFFAOYSA-N 0.000 claims abstract description 7
- RGCKGOZRHPZPFP-UHFFFAOYSA-N alizarin Chemical compound C1=CC=C2C(=O)C3=C(O)C(O)=CC=C3C(=O)C2=C1 RGCKGOZRHPZPFP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 235000012730 carminic acid Nutrition 0.000 claims abstract description 7
- 230000008093 supporting effect Effects 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 210000004911 serous fluid Anatomy 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000011268 mixed slurry Substances 0.000 claims description 3
- 239000012466 permeate Substances 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 239000004417 polycarbonate Substances 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 238000004154 testing of material Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 230000008595 infiltration Effects 0.000 claims 6
- 238000001764 infiltration Methods 0.000 claims 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005065 mining Methods 0.000 description 7
- 239000011440 grout Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Images
Classifications
-
- 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
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N2013/003—Diffusion; diffusivity between liquids
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Fluid Mechanics (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a visual test device and a test method for fractured coal rock mass permeation grouting, and relates to the technical field of rock mass visual tests, wherein the device comprises a fully transparent grouting barrel, the lower end of the fully transparent grouting barrel is connected with a base, the upper end of the fully transparent grouting barrel is provided with a sealing pressure head and a loading hollow pressure head, the periphery of the sealing pressure head is provided with a sealing ring, and the top of the sealing pressure head is provided with an exhaust pipe and an exhaust valve; the electric cement mixing station, the controllable high-pressure pneumatic grouting pump and the digital display type multi-information monitoring system are communicated with a grouting conveying hole in the base and a grouting hole in the base through a high-pressure-resistant grouting pipe and a flange plate; and (3) adopting a high-speed camera to observe the diffusion form and the whole process of the slurry containing non-radioactive tracers such as alizarin red or carmine and the like in the full-transparent grouting barrel in the crushed coal rock body in real time. The device has the advantages of transparency, visibility, reasonable structure, simple manufacture, low cost, safe operation and reliable use.
Description
The invention discloses a divisional application of a visual test device for fractured coal and rock mass permeation grouting and a test method thereof, wherein the application number of a master case is 201810343965.9, and the application date is 2018.04.17.
Technical Field
The invention relates to the technical field of rock mass visualization tests, in particular to a visual test device and a visual test method for permeation grouting of a broken coal rock mass.
Background
With the increase of energy demand and the continuous increase of mining intensity of national economic development, shallow resources are increasingly reduced, the mining depth of coal mines is continuously increased, and domestic and foreign mines are in a deep resource mining state successively. With the increase of the mining depth of a mine, factors such as deterioration of geological conditions, increase of crushed or loose coal rock mass, increase of raw rock stress and mining stress and the like aggravate the intensity of the development of the mine pressure of the roadway, so that surrounding rocks of the roadway are softened or the crushing degree is more and more serious; meanwhile, the anchoring property of the anchor rod (cable) in broken or loose coal rock mass is poor (the anchoring force of the anchor rod and the anchor cable is small, and the anchor cable is easy to fall off), so that the supporting effect of the anchor rod and the anchor cable on the roadway is not ideal, and the problem of surrounding rock control of the deep roadway is increasingly prominent. Particularly, with the continuous improvement of the mining mechanization degree, the working face is longer and longer, the cross section size of the gate is larger and larger, the roof of the working face is pushed to the top in a large area or the roof is greatly sunk in the mining process, so that a press (a fully mechanized hydraulic support is blocked and cannot be pushed) and a long-distance rib is formed, the performance of equipment efficiency and the improvement of productivity are restricted, and the safe and efficient production of a mine is seriously influenced. In general, the reasonable control of broken or loose coal rock mass has long been an unsolved technical problem in underground coal mine excavation engineering. A large number of indoor tests and engineering practices show that after grouting, slurry can fill and compact cracks or pores or fracture surfaces and the like in a broken or loose coal rock body through extrusion or osmosis, and the broken or loose coal rock body is cemented again through the cementing action of the slurry to form a complete body (grouting stone body) capable of bearing again; the grouting can improve the stress state of the surrounding rock of the roadway, improve the self-bearing capacity of the broken or loose surrounding rock and the overall stability of the surrounding rock of the roadway, and is an effective technical means for reinforcing broken or loose coal rock mass.
Generally, grouting is a method for reinforcing rock-soil body to improve its physical and mechanical properties by injecting a curable slurry (cement slurry, chemical slurry, etc.) into the pores or cracks of the rock-soil body through a grouting hole (or a grouting pipe) under pressure, and serves to reinforce and prevent seepage. The grouting test mainly comprises an indoor grouting test and a field grouting test, and the indoor grouting simulation test is an indispensable important method for researching the grouting diffusion and reinforcement mechanism of the medium of the fractured coal rock mass. At present, due to the influence of various factors such as test conditions, test objects and the like, although parameters such as grouting pressure, grouting amount, diffusion range and the like can be obtained to a certain extent by the conventional grouting test device, the conventional grouting test device is basically a closed device manufactured by processing high-strength steel, and the flowing form and the diffusion process of slurry in the crushed coal rock mass cannot be observed in real time at all; in addition, in the existing grouting test device, a single grouting pipe is basically adopted for carrying out osmotic compaction or high-pressure fracturing grouting, so that the slurry is not uniformly diffused, and the slurry is easy to block and overflow. Therefore, the development of a visual test device for simulating the diffusion process of the slurry in the crushed coal rock mass medium under the pressure-bearing condition, a slurry uniform and stable permeation device and a slurry uniform and stable permeation method are necessary, and a test foundation can be provided for analyzing the flow diffusion rule of the slurry in the crushed coal rock mass and disclosing the grouting reinforcement mechanism of the crushed coal rock mass.
Disclosure of Invention
The invention aims to provide a visual grouting test device and a visual grouting test method for fractured coal rock mass, and provides the visual grouting test device which is reasonable in structure, simple to manufacture, low in cost, safe to operate and reliable to use, aiming at the fractured coal rock mass, soil bodies, sand bodies and other loose media.
In order to achieve the purpose, the invention provides the following scheme:
a visual test device for seepage grouting of a fractured coal rock mass comprises a base, a controllable high-pressure pneumatic grouting pump, an electric cement mixing station, a digital display type multi-information monitoring system and a fully transparent grouting barrel; the fully transparent grouting barrel is used for accommodating the crushed coal rock mass sample;
the lower end of the fully transparent grouting barrel is connected with the base; the upper end of the fully transparent grouting barrel is connected with a supporting steel plate; the supporting steel plate and the base are connected with a high-strength bolt into a whole through a supporting rod;
the inner wall of the upper end of the fully transparent grouting barrel is provided with a slidable sealing pressure head; the upper part of the sealing pressure head is provided with a loading hollow pressure head, the top surface of the sealing pressure head is provided with an exhaust pipe, and an exhaust valve extending into the loading hollow pressure head is arranged in the exhaust pipe;
the inner wall of the lower end of the fully transparent grouting barrel is provided with a slurry permeating plate; a plurality of slurry outlet holes are formed in the slurry permeating plate; the base is provided with a grouting conveying hole and a base grouting hole which are mutually connected;
the electric cement mixing station is communicated with the controllable high-pressure pneumatic grouting pump and the digital display type multi-information monitoring system through high-pressure-resistant grouting pipes; the diffusion state and the whole process of the slurry in the fully transparent grouting barrel in the crushed coal rock body are observed in real time by adopting a high-speed camera; the serous fluid contains a non-radioactive tracer, the content of the non-radioactive tracer is 1-5% of the total mass of the serous fluid, and the non-radioactive tracer adopts alizarin red or carmine.
Optionally, the diameter of the base is 300-500 mm, and the thickness of the base is 20-50 mm.
Optionally, the fully transparent grouting barrel is made of special-grade armored polycarbonate, the inner diameter of the fully transparent grouting barrel is 100-200 mm, the wall thickness of the fully transparent grouting barrel is 10-30 mm, and the height of the fully transparent grouting barrel is 200-300 mm.
Optionally, the digital display type multivariate information monitoring system is connected with the grouting conveying hole through a flange plate;
the digital display type multivariate information monitoring system comprises a flow sensor, a density sensor and a pressure sensor.
Optionally, sealing rings are arranged at the edges of the upper surface and the lower surface of the sealing pressure head and the upper surface and the lower surface of the slurry permeating plate;
the loading hollow pressure head is internally provided with a hollow structure, and the periphery of the loading hollow pressure head is provided with a sealing ring.
Optionally, the diameter of the pulp permeating plate is 100-200 mm, and the thickness and height of the pulp permeating plate are 20-40 mm;
the diameter of the pulp outlet hole is 8-12 mm, the circumferential and radial distance of the pulp outlet control is 10-20 mm, and the pulp outlet holes are distributed on the pulp permeating plate for 5-8 circles in a quincunx manner.
Optionally, an annular notch is formed in the base, and the lower end of the fully transparent grouting barrel is inserted into the annular notch.
In order to achieve the purpose, the invention also provides the following technical scheme:
a test method based on a visual test device for fractured coal rock mass permeation grouting comprises the following steps:
putting the crushed coal rock mass sample into a fully transparent grouting barrel, connecting a hydraulic material testing machine with a loading hollow pressure head, starting a testing device, applying a set axial pressure to the crushed coal rock mass sample through a sealing pressure head, and discharging gas in the crushed coal rock mass sample into the loading hollow pressure head through an exhaust pipe and an exhaust valve in the process of applying the set axial pressure;
cement, water and a non-radioactive tracer agent in a certain proportion are placed into an electric cement mixing station for mixing, the uniformly mixed slurry is conveyed into a grouting conveying hole of a base and a base grouting hole through a controllable high-pressure pneumatic grouting pump, a digital display type multi-information monitoring system, a high-pressure resistant grouting pipe and a flange plate, and the slurry is uniformly grouted into the crushed coal rock sample through a slurry outlet hole in a slurry permeable plate;
the flow, density and grouting pressure of the slurry are monitored in real time through a digital display type multi-information monitoring system, and a high-speed camera is adopted to observe the diffusion form and the whole process of the slurry containing the non-radioactive tracer in the full-transparent grouting barrel in the broken coal rock mass in real time.
Optionally, the assay method further comprises:
in the process of grouting the fractured coal rock mass sample, the pressure stabilization control of multistage grouting pressure is carried out through the controllable high-pressure pneumatic grouting pump, so that the slurry can uniformly and stably permeate into the fractured coal rock mass sample.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a visual test device and a visual test method for permeation grouting of a crushed coal rock mass. The visual test device can also be used for simulating the grouting diffusion rule of loose media such as soil bodies, sand bodies, soil-rock mixtures and the like under the compaction grouting condition, analyzing the grouting reinforcement effect and observing the diffusion form and process of slurry in the grouting process in real time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other structural schematic diagrams according to these drawings without inventive labor.
FIG. 1 is a schematic structural diagram of a visual test device for permeation grouting of a fractured coal rock mass according to the invention.
Description of the drawings:
the method comprises the following steps of 1-an electric cement mixing station, 2-a controllable high-pressure pneumatic grouting pump, 3-a digital display type multivariate information monitoring system, 4-a high-pressure-resistant grouting pipe, 5-a flange plate, 6-a base, 7-a grouting conveying hole, 8-a base grouting hole, 9-a mortar permeating plate, 10-a mortar outlet hole, 11-a fully transparent grouting barrel, 12-a crushed coal rock sample, 13-a sealing pressure head, 14-a sealing ring, 15-an exhaust pipe, 16-an exhaust valve, 17-a loading hollow pressure head, 18-a supporting steel plate, 19-a high-strength bolt, 20-a supporting rod and 21-a high-speed camera.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in figure 1, the visual test device for permeation grouting of fractured coal and rock mass comprises a base 6, a controllable high-pressure pneumatic grouting pump 2, an electric cement mixing station 1, a digital display type multi-information monitoring system 3 and a fully transparent grouting barrel 11; the fully transparent grouting barrel 11 is used for accommodating a crushed coal rock mass sample 12.
The lower end of the fully transparent grouting barrel 11 is connected with the base 6; the upper end of the fully transparent grouting barrel 11 is connected with a supporting steel plate; the supporting steel plate 18 and the base are connected with a high-strength bolt 19 into a whole through a supporting rod 20.
The inner wall of the upper end of the fully transparent grouting barrel 11 is provided with a slidable sealing pressure head 13; and a loading hollow pressure head 17 is arranged at the upper part of the sealing pressure head 13, an exhaust pipe 15 is arranged on the top surface of the sealing pressure head 13, and an exhaust valve 16 extending into the loading hollow pressure head is arranged in the exhaust pipe 15. And sealing rings 14 are arranged at the edges of the upper surface and the lower surface of the sealing pressure head 13 and the pulp permeating plate 9.
The inner wall of the lower end of the fully transparent grouting barrel is provided with a slurry permeating plate 9; a plurality of slurry outlet holes 10 are formed in the slurry permeating plate 9; the base 6 is provided with a grouting conveying hole 7 and a base grouting hole 8 which are mutually connected.
The electric cement mixing station 1 is communicated with the controllable high-pressure pneumatic grouting pump 2 and the digital display type multi-information monitoring system 3 through a high-pressure resistant grouting pipe 4; the diffusion state and the whole process of the slurry in the full transparent grouting barrel 11 in the crushed coal rock mass are observed in real time by adopting a high-speed camera 21; the serous fluid contains a non-radioactive tracer, the content of the non-radioactive tracer is 1-5% of the total mass of the serous fluid, and the non-radioactive tracer adopts alizarin red or carmine.
The digital display type multivariate information monitoring system is connected with the grouting delivery hole through a flange plate 5.
In the embodiment, the base 6, the slurry permeating plate 9, the sealing pressure head 13 and the loading hollow pressure head 17 are all made of high-strength steel (the material specification is Q355-460). The diameter of the base is 300-500 mm, and the thickness (height) is 20-50 mm; the full transparent grouting barrel 11 is made of special grade armored polycarbonate, the inner diameter of the full transparent grouting barrel is 100-200 mm, the wall thickness is 10-30 mm, and the height is 200-300 mm; the strength grade of the high-strength bolt 19 is 8.8-10.9, and the diameter of the bolt hole is 20-26 mm; the width of the annular notch of the base 6 is 10-30 mm, and the depth is 10-20 mm; the diameter of the base grouting hole is 10-20 mm; the diameter of the pulp permeating plate 9 is 100-200 mm, the thickness (height) is 20-40 mm, the diameter of the pulp outlet hole is 8-12 mm, the circumferential and radial distance is 10-20 mm, and the pulp permeating plate can be arranged for 5-8 circles in a quincunx shape; the diameter of the sealing pressure head is 100-200 mm, the thickness (height) is 20-40 mm, the diameter of the loading hollow pressure head 17 is 90-190 mm, and the thickness (height) is 100-150 mm. The exhaust pipe 15 is made of seamless steel pipe, the diameter is 8-10 mm, the wall thickness is 2-3 mm, and the length is 10-15 mm.
In the embodiment, the diameter of the high-pressure resistant grouting pipe 4 is 20-30 mm, and the wall thickness is 3-6 mm; the digital display type multivariate information monitoring system 3 comprises a flow (flow velocity) sensor, a density sensor, a pressure sensor and the like, wherein the measuring range of the flow (flow velocity) sensor is 0-1L/min, the resolution is 0.001L/min, and the error is +/-0.1%; the range of the pressure sensor is 1-10 MPa, the resolution is 0.01MPa, and the error is +/-0.1%; the measuring range of the density sensor is 0 to 1g/cm 3 Resolution of 0.001g/cm 3 The error is. + -. 0.1%. Controllable heightThe grouting pressure of the pneumatic grouting pump is 1-10 MPa, the pressure stabilizing time is 10-30 min, and the capacity of the electric cement mixing station is 10-30L; the cement is made of ordinary portland cement material, the strength grade is 32.5-42.5, and the mass ratio (water-cement ratio) of the cement to the water is 0.6-1.0; the participation amount of non-radioactive tracers such as alizarin red or carmine is 1-5% of the total mass of the serous fluid; the above parameters can be properly adjusted according to the actual engineering conditions.
The visual test method for permeation grouting of the fractured coal rock mass by adopting the test device comprises the following steps:
the method comprises the following steps: the method comprises the steps of putting a crushed coal rock mass sample 12 into a fully transparent grouting barrel 11, connecting a hydraulic material testing machine with a loading hollow pressure head 17, starting the testing machine, applying set axial pressure to the crushed coal rock mass sample 11 through a sealing pressure head 13, and discharging gas in the crushed coal rock mass sample 11 into the loading hollow pressure head 17 through an exhaust pipe 10 and an exhaust valve 16 in the process of applying the axial pressure.
Step two: cement, water and a proper amount of non-radioactive tracer in a certain proportion are placed into an electric cement mixing plant 1 to be mixed, uniformly mixed slurry containing non-radioactive tracer such as alizarin red or carmine can be conveyed into a grouting conveying hole 7 and a base grouting hole 8 of a base 1 through a controllable high-pressure pneumatic grouting pump 2, a digital display type multi-information monitoring system 3, a high-pressure-resistant grouting pipe 4 and a flange plate 5, and grouting can be uniformly carried out on a crushed coal rock sample 11 through a grout outlet 10 in a permeable plate 9.
In the process of grouting the crushed coal rock mass sample 12, the controllable high-pressure pneumatic grouting pump 2 can be used for performing multistage grouting pressure stabilization control, so that the grout can uniformly and stably permeate into the crushed coal rock mass sample 12, and the grouting test is prevented from being terminated due to uneven diffusion, grout blockage and grout overflow; the flow (flow velocity), density and grouting pressure of the slurry are monitored in real time through the digital display type multi-information monitoring system 3, and the diffusion form and the whole process of the slurry containing non-radioactive tracers such as alizarin red or carmine and the like in the full transparent grouting barrel 11 in the broken coal rock body are observed in real time by adopting a high-speed camera 21.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. The visual test device for the seepage grouting of the fractured coal rock mass is characterized by comprising a base, a controllable high-pressure pneumatic grouting pump, an electric cement mixing station, a digital display type multi-element information monitoring system and a fully transparent grouting barrel; the fully transparent grouting barrel is used for accommodating the crushed coal rock mass sample;
the lower end of the fully transparent grouting barrel is connected with the base; the upper end of the fully transparent grouting barrel is connected with a supporting steel plate; the supporting steel plate and the base are connected with a high-strength bolt into a whole through a supporting rod;
the inner wall of the upper end of the fully transparent grouting barrel is provided with a slidable sealing pressure head; the upper part of the sealing pressure head is provided with a loading hollow pressure head, the top surface of the sealing pressure head is provided with an exhaust pipe, and an exhaust valve extending into the loading hollow pressure head is arranged in the exhaust pipe;
the inner wall of the lower end of the fully transparent grouting barrel is provided with a slurry permeating plate; a plurality of pulp outlet holes are formed in the pulp permeating plate; the base is provided with a grouting conveying hole and a base grouting hole which are mutually connected;
the electric cement mixing station is communicated with the controllable high-pressure pneumatic grouting pump and the digital display type multi-information monitoring system through high-pressure-resistant grouting pipes; the diffusion state and the whole process of the slurry in the fully transparent grouting barrel in the crushed coal rock body are observed in real time by adopting a high-speed camera; the serous fluid contains a non-radioactive tracer, the content of the non-radioactive tracer is 1-5% of the total mass of the serous fluid, and the non-radioactive tracer adopts alizarin red or carmine.
2. The visual test device for infiltration grouting of fractured coal and rock mass according to claim 1, wherein the diameter of the base is 300-500 mm, and the thickness of the base is 20-50 mm.
3. The visual test device for the infiltration grouting of fractured coal and rock masses according to claim 1, wherein the fully transparent grouting barrel is made of special-grade armored polycarbonate, the inner diameter of the fully transparent grouting barrel is 100-200 mm, the wall thickness of the fully transparent grouting barrel is 10-30 mm, and the height of the fully transparent grouting barrel is 200-300 mm.
4. The visual test device for the infiltration grouting of fractured coal and rock masses according to claim 1, wherein the digital display type multivariate information monitoring system is connected with a grouting conveying hole through a flange plate;
the digital display type multivariate information monitoring system comprises a flow sensor, a density sensor and a pressure sensor.
5. The visual test device for fractured coal and rock mass permeation grouting according to claim 1, wherein sealing rings are arranged at the edges of the upper surface and the lower surface of the sealing pressure head and the slurry permeation plate;
the loading hollow pressure head is internally provided with a hollow structure, and the periphery of the loading hollow pressure head is provided with a sealing ring.
6. The visual test device for the permeation grouting of the fractured coal rock mass according to claim 1, wherein the diameter of the slurry permeating plate is 100-200 mm, and the thickness and height of the slurry permeating plate are 20-40 mm;
the diameter of the pulp outlet hole is 8-12 mm, the circumferential and radial distance of the pulp outlet control is 10-20 mm, and the pulp outlet holes are distributed on the pulp permeable plate for 5-8 circles in a quincunx manner.
7. The visual testing device for the infiltration and grouting of the fractured coal rock mass according to claim 1, wherein the base is provided with an annular notch, and the lower end of the fully transparent grouting barrel is inserted into the annular notch.
8. A test method based on the visual test device for fractured coal rock mass infiltration grouting of any one of claims 1 to 7, wherein the test method comprises the following steps:
putting the crushed coal rock mass sample into a fully transparent grouting barrel, connecting a hydraulic material testing machine with a loading hollow pressure head, starting a testing device, applying a set axial pressure to the crushed coal rock mass sample through a sealing pressure head, and discharging gas in the crushed coal rock mass sample into the loading hollow pressure head through an exhaust pipe and an exhaust valve in the process of applying the set axial pressure;
cement, water and a non-radioactive tracer agent in a certain proportion are placed into an electric cement mixing station for mixing, the uniformly mixed slurry is conveyed into a grouting conveying hole of a base and a base grouting hole through a controllable high-pressure pneumatic grouting pump, a digital display type multi-information monitoring system, a high-pressure resistant grouting pipe and a flange plate, and the slurry is uniformly grouted into the crushed coal rock sample through a slurry outlet hole in a slurry permeable plate;
the flow, density and grouting pressure of the slurry are monitored in real time through a digital display type multi-information monitoring system, and the diffusion form and the whole process of the slurry containing the non-radioactive tracer in the full-transparent grouting barrel in the broken coal rock body are observed in real time by adopting a high-speed camera.
9. The testing method of the visual testing device for the infiltration and grouting of the fractured coal rock mass according to claim 8, characterized by further comprising the following steps:
in the process of grouting the broken coal rock mass sample, the controllable high-pressure pneumatic grouting pump is used for performing pressure stabilization control on multistage grouting pressure, so that the slurry can uniformly and stably permeate the broken coal rock mass sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210835530.2A CN115184239A (en) | 2018-04-17 | 2018-04-17 | Visual test device and method for fractured coal rock mass permeation grouting |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810343965.9A CN108444888A (en) | 2018-04-17 | 2018-04-17 | A kind of fractured coal and rock osmotic grouting visual test device and its test method |
| CN202210835530.2A CN115184239A (en) | 2018-04-17 | 2018-04-17 | Visual test device and method for fractured coal rock mass permeation grouting |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810343965.9A Division CN108444888A (en) | 2018-04-17 | 2018-04-17 | A kind of fractured coal and rock osmotic grouting visual test device and its test method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115184239A true CN115184239A (en) | 2022-10-14 |
Family
ID=63200102
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210835530.2A Pending CN115184239A (en) | 2018-04-17 | 2018-04-17 | Visual test device and method for fractured coal rock mass permeation grouting |
| CN201810343965.9A Pending CN108444888A (en) | 2018-04-17 | 2018-04-17 | A kind of fractured coal and rock osmotic grouting visual test device and its test method |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810343965.9A Pending CN108444888A (en) | 2018-04-17 | 2018-04-17 | A kind of fractured coal and rock osmotic grouting visual test device and its test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN115184239A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117147315A (en) * | 2023-09-05 | 2023-12-01 | 焦作煤业（集团）新乡能源有限公司 | Grouting reinforcement simulation experiment device and method for coal mine fault fracture zone |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406289B (en) * | 2018-10-12 | 2021-03-30 | 河南理工大学 | Test method for secondary grouting reinforcement bearing characteristic of fractured rock mass |
| CN109297872B (en) * | 2018-11-30 | 2023-05-02 | 山东科技大学 | Isotope tracking technology-based induced penetration grouting test device and test method |
| CN109342275B (en) * | 2018-12-07 | 2021-01-08 | 中煤科工集团西安研究院有限公司 | Visual crack grouting test device and method for simulating multiple main control variables |
| CN109541182A (en) * | 2018-12-28 | 2019-03-29 | 山东科技大学 | A kind of Visual retrieval crack grouting simulation test device and test method |
| CN110031369A (en) * | 2019-05-22 | 2019-07-19 | 中国水利水电第八工程局有限公司 | The underwater slurry shield mud film of bad ground forms simulator and analogy method |
| CN110261202A (en) * | 2019-07-25 | 2019-09-20 | 泉州装备制造研究所 | A kind of grouting sample preparation device |
| CN111413208B (en) * | 2020-04-17 | 2022-10-28 | 太原理工大学 | Test device and test method for dynamic and static loading infrared observation of fractured coal rock mass |
| CN111487163B (en) * | 2020-04-21 | 2022-11-29 | 重庆大学 | Novel variable-load pressurizing grouting test device for fractured coal and rock mass |
| CN111505237A (en) * | 2020-05-28 | 2020-08-07 | 太原理工大学 | Residual coal re-mining broken coal rock mass grouting modification test device and test method |
| CN111766190B (en) * | 2020-07-01 | 2021-01-29 | 中国科学院地质与地球物理研究所 | Visual test system for simulating grouting and seepage process of fractured rock mass |
| CN112067508A (en) * | 2020-09-11 | 2020-12-11 | 中国矿业大学 | Simulation device and simulation method for diffusion of overlying strata isolation grouting filling slurry |
| CN114018707A (en) * | 2021-11-12 | 2022-02-08 | 中国地质大学（北京） | Pressure grouting test device and method for fractured rock mass in caving zone |
| CN114397238A (en) * | 2022-01-24 | 2022-04-26 | 中国矿业大学 | Coal-rock mass three-dimensional visual grouting test device and use method |
| CN114814094B (en) * | 2022-04-13 | 2024-03-01 | 西安科技大学 | Visual experiment device and experiment method for simulating gas drilling and hole sealing |
| CN115478570B (en) * | 2022-09-16 | 2024-03-26 | 三峡大学 | Visual experimental device and method for simulating grouting effect of seepage-proof curtain |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5646957B2 (en) * | 2010-11-08 | 2014-12-24 | 三井造船株式会社 | Fluid flow visualization device and visualization method |
| CN103712863B (en) * | 2014-01-07 | 2016-03-09 | 东北石油大学 | Based on the device and method of Study on Catastrophe Theory pressure break Rock Damage and crack propagation |
| CN104450621B (en) * | 2014-09-30 | 2018-10-19 | 首都医科大学附属北京口腔医院 | WDR63 genes are in mescenchymal stem cell bone to the regulation and control method with tooth into atomization |
| CN105181932B (en) * | 2015-09-09 | 2017-03-22 | 中国矿业大学 | Visualized grouting test device and test method of fractured rock mass |
| CN106885759B (en) * | 2017-03-28 | 2019-11-19 | 山东大学 | A kind of visualization sand bed with saturated dynamic water osmotic grouting experimental rig and method |
| CN107525541B (en) * | 2017-08-04 | 2020-01-10 | 中国矿业大学 | Low-permeability coal-rock mass splitting permeation coupling grouting test device and method |
| CN107740690B (en) * | 2017-11-07 | 2019-05-10 | 张成富 | A kind of inter-well test method using solid tracers |
-
2018
- 2018-04-17 CN CN202210835530.2A patent/CN115184239A/en active Pending
- 2018-04-17 CN CN201810343965.9A patent/CN108444888A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117147315A (en) * | 2023-09-05 | 2023-12-01 | 焦作煤业（集团）新乡能源有限公司 | Grouting reinforcement simulation experiment device and method for coal mine fault fracture zone |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108444888A (en) | 2018-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115184239A (en) | Visual test device and method for fractured coal rock mass permeation grouting | |
| CN102705005B (en) | Technology for plugging water bursting in mine by directional diversion grouting | |
| CN107246267B (en) | Vertical shaft wall structure in bad stratum, construction device and construction method | |
| CN107525541B (en) | Low-permeability coal-rock mass splitting permeation coupling grouting test device and method | |
| CN111305877B (en) | Construction method for strong rockburst section tunnel in high-altitude area | |
| CN107191188B (en) | Bedrock section bad aquifer positioning and targeting grouting vertical shaft wall structure, construction device and construction method | |
| CN102587859A (en) | Technology for blocking mine water bursting through backflow grouting | |
| CN114233385B (en) | Treatment method for mud-bursting water of inclined shaft | |
| CN113236117B (en) | Water control method for southwest corrosion stratum shaft by ground and underground combined grouting | |
| CN108915690B (en) | Novel method for preventing water gushing of vertical shaft well wall in vertical shaft aquifer tunneling | |
| CN105002915A (en) | Construction method of steel casing guard wall of manual hole digging pile | |
| CN215718763U (en) | Shield constructs end reinforced structure | |
| Sun et al. | Capsule‐Bag‐Type Sealing Technology for Gas Drainage Boreholes and Its Application | |
| CN110644440B (en) | Method for forming groove on anti-seepage wall of dam plug body | |
| CN111441775B (en) | Rapid grouting arching reinforcement method before excavation of tunnel in stratum with poor groutability and difficult self-stabilization | |
| CN113464150A (en) | Shield end reinforcing structure and reinforcing construction method | |
| CN109519176B (en) | Mining tunnel grouting reinforcement method and structure for water-rich granite residual soil stratum | |
| CN113217036A (en) | Post-grouting construction method for tunnel structure at water burst section of fault fracture zone | |
| RU2431747C1 (en) | Procedure for development of multi-pay oil deposit | |
| CN110644438A (en) | Pretreatment method for grooving construction of anti-seepage wall of dam plug body | |
| CN114198104B (en) | Long-distance coal pillar plugging and reinforcing method | |
| CN114716214B (en) | Water burst grouting material for deep-buried high-pressure water-rich tunnel and water plugging and reinforcing application method thereof | |
| CN113153318B (en) | Grouting reinforcement device and grouting reinforcement method for earth-rock mixture stratum | |
| CN111074897B (en) | Concrete pouring pipe device and method for preventing concrete from segregation | |
| CN219509641U (en) | Messy image branch fork type karst cave processing structure penetrating through parallel tunnel column |
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 |