CN114805728A - Polymer chemical coal rock mass reinforcing agent for coal mine and injection method thereof - Google Patents
Polymer chemical coal rock mass reinforcing agent for coal mine and injection method thereof Download PDFInfo
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- CN114805728A CN114805728A CN202210480202.5A CN202210480202A CN114805728A CN 114805728 A CN114805728 A CN 114805728A CN 202210480202 A CN202210480202 A CN 202210480202A CN 114805728 A CN114805728 A CN 114805728A
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- 238000002347 injection Methods 0.000 title claims abstract description 139
- 239000007924 injection Substances 0.000 title claims abstract description 139
- 239000012744 reinforcing agent Substances 0.000 title claims abstract description 56
- 239000003245 coal Substances 0.000 title claims abstract description 46
- 239000011435 rock Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000000126 substance Substances 0.000 title claims abstract description 17
- 229920000642 polymer Polymers 0.000 title claims abstract description 14
- 238000000926 separation method Methods 0.000 claims abstract description 57
- 238000003860 storage Methods 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 37
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 230000003068 static effect Effects 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 22
- 239000002002 slurry Substances 0.000 claims description 21
- 239000011148 porous material Substances 0.000 claims description 19
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical group CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000003054 catalyst Substances 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 9
- 239000011440 grout Substances 0.000 claims description 9
- 206010010904 Convulsion Diseases 0.000 claims description 8
- 230000036461 convulsion Effects 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 7
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- 229920005862 polyol Polymers 0.000 claims description 6
- 150000003077 polyols Chemical class 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 5
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 5
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 claims description 5
- 235000012239 silicon dioxide Nutrition 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 229920001228 polyisocyanate Polymers 0.000 claims description 3
- 239000005056 polyisocyanate Substances 0.000 claims description 3
- 239000012466 permeate Substances 0.000 claims description 2
- 239000003607 modifier Substances 0.000 claims 2
- 238000005728 strengthening Methods 0.000 claims 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 abstract 2
- 238000000605 extraction Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 7
- 238000007569 slipcasting Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/109—Esters; Ether-esters of carbonic acid, e.g. R-O-C(=O)-O-R
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/006—Lining anchored in the rock
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a polymer chemical coal rock mass reinforcing agent for coal mines and an injection method thereof, wherein the injection method comprises the following steps: s1: firstly, moving a storage vehicle to a working area, and respectively injecting a component A and a component B into a material storage cavity A and a material storage cavity B; s3: conveying the raw materials in the material storage cavity A and the material storage cavity B to a static mixer through a second conveying pipe and a first conveying pipe by a pump; s4: the motor is started, the bottom of the guide pillar drives the fan assembly to rotate through the second bevel gear transmission assembly, gas inside the hole channel is pumped out from the air pumping groove and the air pumping hole, meanwhile, the guide pillar drives the transversely-distributed separation columns on the injection rod to rotate through the first bevel gear transmission assembly, and air in the hole channel partitioned by the plugging air bag ring is sucked. The polymer chemical coal rock mass reinforcing agent for the coal mine and the injection method thereof realize subarea injection and diffusion, and simultaneously extract the internal air in real time, thereby avoiding bubbles and improving the strength of the coal rock mass.
Description
Technical Field
The invention relates to the technical field of coal rock mass reinforcement, in particular to a high-molecular chemical coal rock mass reinforcing agent for coal mines and an injection method thereof.
Background
In the coal mining process, receive geological structure, primary crack and mining pressure can form broken coal rock mass, arouse the circumstances such as caving and roof fall of work area easily, influence exploitation safety, seriously restrict the exploitation progress, to the reinforcement of coal rock mass, prior art adopts the slip casting technology, through to the inside injection reinforcing agent of coal rock mass, treat to consolidate the coal rock mass after the infiltration inflation, but current coal rock mass reinforcing agent and injection method have following problem when using:
among the prior art, insert the injection pole into the pore canal of drilling in advance and carry out the slip casting operation usually, the reinforcing agent is extruded by the injection pole front end and is stretched gradually to whole pore canal and gap in, inconvenient realization segmentation slip casting operation, it is less to result in the palirrhea thick liquid in shallow part and middle part easily, cause the thick liquid diffusion uneven, there is the condition of weak face, there is the air in pore canal and the gap simultaneously, among the prior art, inconvenient discharging inside air in the slip casting, the bubble appears easily, seriously influence the internal strength, be difficult to reach anticipated effect.
Aiming at the problems, innovative design is urgently needed on the basis of the original coal and rock mass reinforcing agent and the injection method thereof.
Disclosure of Invention
The invention aims to provide a polymer chemical coal rock mass reinforcing agent for a coal mine and an injection method thereof, and aims to solve the problems that the coal rock mass reinforcing agent and the injection method thereof proposed by the background technology are inconvenient to realize sectional grouting operation and discharge internal air during grouting.
In order to achieve the purpose, the invention provides the following technical scheme: a method for injecting a polymer chemical coal rock mass reinforcing agent for coal mines comprises the following steps:
s1: firstly, moving a storage vehicle to a working area, respectively injecting an A component and a B component into an A material storage cavity and a B material storage cavity, drilling the rock wall of the working area, then inserting an injection rod into the drilled hole, and enabling a top plate to be propped against the inner wall of the hole;
s2: before injection, the movable toothed ring is rotated, the movable toothed ring drives the screw rod to rotate through the transfer gear and the guide toothed sleeve, so that the sealing strip is pushed to move in the gas transmission groove, gas is input into the plugging air bag ring through the gas transmission pipe, the plugging air bag ring is expanded to be in contact with the inner wall of the pore channel, the plugging air bag ring is matched with the grout stopping plug and the tray to fix the injection rod, and the pore channel is sealed into a plurality of areas through the plugging air bag ring;
s3: the raw materials in the material storage cavity A and the material storage cavity B are conveyed to a static mixer through a second conveying pipe and a first conveying pipe by a pump to realize instant mixing, and then are input into a pore channel through an injection rod and an injection hole, the injection hole at the top is not blocked, and the injection hole at the lower part is sequentially blocked by baffle plates with gradually improved hardness, so that a reinforcing agent is matched with a plugging air bag ring to realize subarea conveying, and the reinforcing agent penetrates into a peripheral crack from inside to outside along with the continuous conveying of the reinforcing agent to realize expansion and filling reinforcement;
s4: when the reinforcing agent is injected, a motor is started, the motor drives a separation column to rotate in a top plate, the rotation of the separation column utilizes centrifugal force to throw out a centrifugal blocking block, so that an air exhaust hole is opened, the motor drives a guide column to rotate in an air exhaust groove through a fluted disc and a movable tooth sleeve, the bottom of the guide column drives a fan assembly to rotate through a second bevel gear transmission assembly, further, the rotation of the fan assembly can be utilized to pump air in a hole channel out of the air exhaust groove and the air exhaust hole, the guide column drives the separation column which is transversely distributed on an injection rod to rotate through a first bevel gear transmission assembly, air in the hole channel of a blocked airbag ring area is sucked, the reinforcing agent is thrown away under the action of the centrifugal force and cannot enter the air exhaust hole, along with the entering of the reinforcing agent, the air is extruded into the air exhaust hole, the motor stops running after the injection is finished, and the centrifugal blocking block resets under the action of a spring to block the air exhaust hole, the air-permeable reinforcing agent is convenient to use next time, and the internal air is pumped out under the condition that the normal use of the reinforcing agent is not influenced;
in the above step S1, a material storage cavity a and a material storage cavity B are respectively formed inside the storage cart, the material storage cavity a and the material storage cavity B are respectively connected with a second delivery pipe and a first delivery pipe through a delivery pump, the second delivery pipe and the first delivery pipe are connected with an injection rod through a static mixer, the lower end of the injection rod is sleeved with a slurry stop plug and a tray, the slurry stop plug is located above the tray, an injection hole is formed outside the injection rod, a baffle is fixed in the injection hole at the lower part, a plugging air bag ring is sleeved outside the injection rod, the inner wall of the plugging air bag ring is communicated with the air conveying groove through an air pipe, the air conveying groove is formed inside the injection rod, a movable toothed ring is sleeved at the bottom of the injection rod in an embedded manner and located below the tray, and the movable toothed ring is connected with the guide toothed sleeve through a transfer gear, the transfer gear is embedded and rotatably installed inside the side edge of the injection rod, the guide gear sleeve is sleeved on the screw, the screw is mounted in the gas transmission groove in a bearing mode, the screw is sleeved with the sealing strip in a threaded mode, the top of the injection rod is embedded and fixed with the motor, the output end of the motor is connected with the separation column, the separation column is mounted at the top of the injection rod in a bearing mode, the top of the separation column is connected with the top plate in a bearing mode, the output shaft of the motor is connected with the movable gear sleeve through a fluted disc in a meshing mode, the movable gear sleeve is sleeved on the guide column, the guide column is mounted in the gas extraction groove in a bearing mode, the gas extraction groove is formed inside the injection rod, the middle of the guide column is connected with the other separation column through the first conical tooth transmission assembly, the separation column transversely penetrates through the sealing and rotatably mounted on the outer side of the middle of the injection rod, and the bottom of the guide column is connected with the fan assembly through the second conical tooth transmission assembly, and the fan assembly is located the inside of the bottom of the injection rod protruding opening position to the fan assembly is located between tray and the movable toothed ring, the inside and the avris of separation column link up and have seted up the induced draft hole, and the induced draft hole link up with the air exhaust groove mutually, and there is centrifugal shutoff piece in the outside in induced draft hole through spring coupling.
Preferably, the separation blade adopts rubber materials to have four in the equal angular distribution of injection hole, and the separation blade is fan-shaped structural design to four separation blade cross sectional area sums are equal to the cross sectional area of filling hole, block the filling hole through the separation blade, make the thick liquid can be from interior to exterior segmentation injection.
Preferably, the sealing strip is attached to and slides in the air conveying groove through the screw rod, the distribution positions of the sealing strip correspond to the distribution positions of the plugging air bag rings, the plugging air bag rings are distributed on the injection rod at equal intervals, the air conveying groove is matched with the plugging air bag rings and distributed in the injection rod in a partitioned mode, the sealing strip is driven by the screw rod to move, air is pressed into the corresponding plugging air bag rings, the injection rod is fixed through the plurality of plugging air bag rings, and meanwhile the pore channel is partitioned.
Preferably, the top of the injection rod and the injection rod share the same central axis, the separation columns are distributed on the side edges of the injection rod at equal angles, the top parts of the injection rods are transversely distributed from the exhaust holes in the columns, the exhaust holes in the separation columns on the side edges of the injection rods are longitudinally distributed, the separation columns rotate, and the slurry hole air is separated by the aid of centrifugal force.
Preferably, centrifugal shutoff piece passes through the spring and in the downthehole elastic sliding of convulsions, and the equal angular distribution of convulsions hole on the separation post to the inner of centrifugal shutoff piece is that the inner of round platform shape structure and convulsions hole pastes mutually, and the outer end of centrifugal shutoff piece is that the inner wall of disc structure and convulsions hole opening part pastes mutually in addition, and the centrifugation post rotates the back, and centrifugal shutoff piece is got rid of to the outside, and the cooperation fan assembly takes the air out, and the thick liquid is detained outside by centrifugal force simultaneously, can not take out with it.
Preferably, the reinforcing agent is composed of a component A and a component B in a volume ratio of 1:1, wherein the component A is composed of the following raw materials:
polyether polyol: 75 to 96 percent;
catalyst: 0.4% -0.9%;
reinforcing agent: 5% -10%;
modifying agent: 2 to 7 percent;
the component B is polyisocyanate.
Preferably, the component A is prepared by mixing polyether polyol, a catalyst, a reinforcing agent and a modifying agent, the catalyst is triethylamine, the reinforcing agent is silicon dioxide, the modifying agent is propenyl diglycol carbonate, the component A and the component B are mixed to realize swelling, and the strength after swelling is improved.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention is provided with a subarea grouting mechanism, wherein plugging air bag rings are sleeved on the outer side of an injection rod at equal intervals and matched with the rotation of a movable gear ring, a screw rod is driven by a transfer gear and a guide gear sleeve to rotate so as to drive a sealing strip to move in an air conveying groove, air in the air conveying groove is extruded into the plugging air bag rings through the air conveying pipe, the injection rod is fixed in a pore passage by utilizing the expanded plugging air bag rings, the pore passage is divided into a plurality of injection areas by utilizing the plugging air bag rings, and grouting is performed on the injection areas from multiple directions by matching with injection holes distributed at equal angles, so that grout moves in a small range, the grout can uniformly enter gaps to expand, the situation that little backflow grout in the shallow part and the middle part is generated when the grout is injected into the end part of the whole injection rod is avoided, and further internal reinforcement operation of a coal rock mass is realized through uniform grouting and expansion and solidification, and the grout overflows from the injection hole at the top part, the lower injection hole is shielded by a baffle plate, and after the upper slurry is injected, the lower slurry is injected again, so that the flow dispersion caused by synchronous injection is avoided, and meanwhile, the hardness of the lower baffle plate is gradually increased, so that the blocking of the slurry in a subarea injection manner is facilitated, and a foundation is provided for the subarea injection;
2. the invention is provided with the air real-time extraction mechanism, the motor drives the upper separation column to operate, the motor drives the guide column to rotate through the fluted disc and the movable tooth sleeve, so that the guide column can drive the separation column in the middle to rotate through the first bevel gear transmission component, meanwhile, the guide column drives the fan component to rotate through the second bevel gear transmission component, so as to realize air extraction operation, the centrifugal blocking block moves outwards under the action of centrifugal force during the rotation of the separation column, so that an air extraction hole is opened, meanwhile, the separation column can throw away nearby slurry during the rotation, so as to prevent the slurry from entering the air extraction hole, along with the injection of the slurry, the air is extruded to the vicinity of the separation column, the air in a duct can be extracted in real time by utilizing the weight difference between the slurry and the air and matching with the rotation of the fan component, the injection of the slurry can not be influenced, the operation is simple, and the bubbles formed by the slurry and the internal air can be effectively avoided, the compactness after expansion is improved, and the resistance of the coal rock mass is improved;
3. according to the invention, triethylamine, silicon dioxide and propenyl diglycol carbonate are added into the raw materials, the viscosity of the reinforcing agent is improved by using the triethylamine with higher activity, the reinforcing agent is convenient to be in close contact with gaps and ducts, the compactness of the reinforcing agent after expansion is improved by using the silicon dioxide, the compression resistance is improved, the propenyl diglycol carbonate is modified and used, the breaking strength, the elastic modulus, the tensile strength and the like are improved, and the stability of the coal rock mass is further improved;
4. to sum up, this application is through the district slip casting in the pore, take out in real time of cooperation air for the thick liquid evenly gets into in the gap, avoid appearing the bubble simultaneously, in the physical measure, improve the stability of consolidating agent inflation solidification back coal rock mass, simultaneously on the chemical measure, improve the viscosity and the intensity of curing agent itself, utilize the dual improvement of physics and chemistry, improve the support intensity of consolidating agent to coal rock mass, improve the security in the ore way, whole easy operation simultaneously, used equipment is less, the energy saving, the on-the-spot swift operation of being convenient for.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a schematic side sectional view of the plugging balloon ring of the present invention;
FIG. 3 is a schematic top sectional view of a plugging balloon ring according to the present invention;
FIG. 4 is a schematic side view of the baffle of the present invention;
FIG. 5 is a schematic side sectional view of the injection rod of the present invention;
FIG. 6 is an enlarged view of the structure at A in FIG. 5 according to the present invention;
FIG. 7 is an enlarged view of the structure at B in FIG. 5 according to the present invention;
FIG. 8 is a schematic top view of a cross-sectional structure of the injection rod of the present invention.
In the figure: 1. a material storage vehicle; 2. a material storage cavity A; 3. a material B storage cavity; 4. an injection rod; 5. a static mixer; 6. a first feed delivery pipe; 7. a second delivery pipe; 8. a grout stopping plug; 9. a tray; 10. an injection hole; 11. a baffle plate; 12. plugging the air bag ring; 121. a gas delivery pipe; 13. a movable toothed ring; 14. a transfer gear; 15. a screw; 16. a gas transmission groove; 17. a gear guide sleeve; 18. a sealing strip; 19. a motor; 20. a separation column; 21. a top plate; 22. a fluted disc; 23. an air exhaust groove; 24. a guide post; 241. a first bevel gear drive assembly; 25. a movable gear sleeve; 26. a second bevel gear assembly; 27. a fan assembly; 28. a suction hole; 29. a spring; 30. and (4) centrifuging the plugging block.
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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides a technical solution: a macromolecule chemical coal rock mass reinforcing agent for coal mines and an injection method thereof are disclosed, wherein a storage trolley 1, a material storage cavity A2, a material storage cavity B3, an injection rod 4, a static mixer 5, a first delivery pipe 6, a second delivery pipe 7, a slurry stop plug 8, a tray 9, an injection hole 10, a baffle plate 11, a plugging air bag ring 12, an air pipe 121, a movable toothed ring 13, a transfer gear 14, a screw 15, an air conveying groove 16, a guide toothed sleeve 17, a sealing strip 18, a motor 19, a separation column 20, a top plate 21, a fluted disc 22, an air extraction groove 23, a guide column 24, a first bevel gear transmission component 241, a movable toothed sleeve 25, a second bevel gear transmission component 26, a fan component 27, an air exhaust hole 28, a spring 29 and a centrifugal plugging block 30 are arranged on the material storage trolley;
example 1
Referring to fig. 1-4, the implantation method includes the following steps:
s1: firstly, moving a storage vehicle 1 to a working area, respectively injecting an A component and a B component into an A material storage cavity 2 and a B material storage cavity 3, drilling the rock wall of the working area, then inserting an injection rod 4 into the drilled hole, and enabling a top plate 21 to be propped against the inner wall of the hole;
s2: before injection, the movable toothed ring 13 is rotated, the movable toothed ring 13 drives the screw rod 15 to rotate through the transfer gear 14 and the guide toothed sleeve 17, so that the sealing strip 18 is pushed to move in the gas transmission groove 16, gas is input into the plugging air bag ring 12 through the gas transmission pipe 121, the plugging air bag ring 12 is expanded to be in contact with the inner wall of the pore canal, the injection rod 4 is fixed by the plugging air bag ring 12 in cooperation with the grout stop plug 8 and the tray 9, and the pore canal is sealed into a plurality of areas through the plugging air bag ring 12;
s3: raw materials in a material storage cavity A2 and a material storage cavity B3 are conveyed to a static mixer 5 through a second conveying pipe 7 and a first conveying pipe 6 by a pump to realize instant mixing, and then are input into a pore channel through an injection rod 4 and an injection hole 10, the injection hole 10 at the top is not shielded, and the injection hole 10 at the bottom is blocked by a baffle plate 11 with gradually improved hardness in sequence, so that a reinforcing agent is matched with a plugging air bag ring 12 to realize subarea conveying, and the reinforcing agent is continuously conveyed to permeate into peripheral cracks from inside to outside to realize expansion and filling reinforcement;
s4: when the reinforcing agent is injected, the motor 19 is started, the motor 19 drives the separation column 20 to rotate in the top plate 21, the rotation of the separation column 20 utilizes centrifugal force to throw out the centrifugal blocking block 30, so that the air suction hole 28 is opened, meanwhile, the motor 19 drives the guide column 24 to rotate in the air suction groove 23 through the fluted disc 22 and the movable toothed sleeve 25, the bottom of the guide column 24 drives the fan component 27 to rotate through the second bevel gear transmission component 26, further, the air in the pore passage of the blocked ring 12 is sucked by the rotation of the fan component 27, the air in the pore passage is pumped out from the air suction groove 23 and the air suction hole 28, meanwhile, the guide column 24 drives the separation column 20 transversely distributed on the injection rod 4 to rotate through the first bevel gear transmission component 241, the air in the pore passage of the blocked ring 12 is sucked, meanwhile, under the action of the centrifugal force, the reinforcing agent is thrown away and cannot enter the air suction hole 28, and along with the entering of the reinforcing agent, the air is extruded into the air suction hole 28, after the injection is finished, the motor 19 stops running, the centrifugal plugging block 30 resets under the action of the spring 29 to plug the air suction hole 28, so that the next use is facilitated, and the internal air is sucked away under the condition that the normal use of the reinforcing agent is not influenced;
in the above step, the inside of the S1 storage cart 1 is respectively provided with an a material storage cavity 2 and a B material storage cavity 3, the a material storage cavity 2 and the B material storage cavity 3 are respectively connected with a second conveying pipe 7 and a first conveying pipe 6 through a conveying pump, the second conveying pipe 7 and the first conveying pipe 6 are connected with an injection rod 4 through a static mixer 5, the lower end position of the injection rod 4 is sleeved with a slurry stop plug 8 and a tray 9, the slurry stop plug 8 is positioned above the tray 9, the outer side of the injection rod 4 is provided with an injection hole 10, a baffle 11 is fixed in the lower injection hole 10, the outer part of the injection rod 4 is sleeved with a plugging air bag ring 12, the inner wall of the plugging air bag ring 12 is communicated with an air conveying groove 16 through an air conveying pipe 121, the air conveying groove 16 is opened inside the injection rod 4, the bottom position of the injection rod 4 is sleeved with a movable toothed ring 13 in an embedded manner, and the movable toothed ring 13 is positioned below the tray 9, the movable gear ring 13 is connected with a guide gear sleeve 17 through a transfer gear 14, the transfer gear 14 is installed inside the side edge of the injection rod 4 in an embedded and rotating mode, the guide gear sleeve 17 is sleeved on a screw rod 15, the screw rod 15 is installed in an air transmission groove 16 in a bearing mode, sealing strips 18 are sleeved on the screw rod 15 in a threaded mode, four blocking pieces 11 are distributed in the injection hole 10 at equal angles through rubber materials, the blocking pieces 11 are designed to be fan-shaped structures, the sum of the cross-sectional areas of the four blocking pieces 11 is equal to the cross-sectional area of the injection hole 10, the sealing strips 18 slide in the air transmission groove 16 in an attached mode through the screw rod 15, the distribution positions of the sealing strips 18 correspond to the distribution positions of the plugging air bag rings 12, the plugging air bag rings 12 are distributed on the injection rod 4 at equal intervals, and the positions of the air transmission groove 16 matched with the plugging air bag rings 12 are distributed in the injection rod 4 in a regional mode;
the reinforcing agent is composed of a component A and a component B in a volume ratio of 1:1, wherein the component A is composed of the following raw materials:
polyether polyol: 75 to 96 percent;
catalyst: 0.4% -0.9%;
reinforcing agent: 5% -10%;
modifying agent: 2 to 7 percent;
the component B is polyisocyanate.
The component A is prepared by mixing polyether polyol, a catalyst, a reinforcing agent and a modifying agent, wherein the catalyst is triethylamine, the reinforcing agent is silicon dioxide, the modifying agent is propenyl diglycol carbonate, the bonding strength, the breaking strength, the elastic modulus and the tensile strength of the reinforcing agent are improved through the matching of the catalyst, the reinforcing agent and the modifying agent, and meanwhile, the partitioned injection of slurry is realized through the use of a plurality of plugging air bag rings 12 and the blocking of blocking pieces 11, the flowing space of the slurry is reduced, the permeation effect of the slurry is improved, and the uneven diffusion of the slurry in shallow areas and at the breaking positions is avoided;
example 2
Referring to fig. 1 and 5-8, a motor 19 is fixed on the top of the injection rod 4 in an embedded manner, an output end of the motor 19 is connected with a separation column 20, the separation column 20 is bearing-mounted on the top of the injection rod 4, a top plate 21 is bearing-connected to the top of the separation column 20, a movable gear sleeve 25 is engaged and connected to an output shaft of the motor 19 through a gear plate 22, the movable gear sleeve 25 is sleeved on a guide column 24, the guide column 24 is bearing-mounted in an air extraction groove 23, the air extraction groove 23 is opened inside the injection rod 4, the middle position of the guide column 24 is connected with another separation column 20 through a first bevel gear transmission component 241, the separation column 20 transversely penetrates through and is hermetically and rotatably mounted on the outer side of the middle of the injection rod 4, the bottom of the guide column 24 is connected with a fan component 27 through a second bevel gear transmission component 26, and the fan component 27 is located inside a protruding opening position at the bottom of the injection rod 4, and the fan assembly 27 is located between the tray 9 and the movable toothed ring 13, the inside and the side of the separation column 20 are through-equipped with the air exhaust hole 28, the air exhaust hole 28 is through-connected with the air exhaust groove 23, and the outside of the air exhaust hole 28 is connected with the centrifugal block-sealing block 30 through the spring 29, the separation column 20 is on the top of the injection rod 4 and the injection rod 4 share the central axis, and the separation column 20 is on the side of the injection rod 4 equiangularly distributed, and the air exhaust hole 28 on the separation column 20 on the top of the injection rod 4 is transversely distributed, and the air exhaust hole 28 on the separation column 20 on the side of the injection rod 4 is longitudinally distributed, the centrifugal block-sealing block 30 elastically slides in the air exhaust hole 28 through the spring 29, and the air exhaust hole 28 equiangularly distributed on the separation column 20, and the inner end of the centrifugal block-sealing block 30 is in a truncated cone-shaped structure and is attached to the inner end of the air exhaust hole 28, and the outer end of the centrifugal block-sealing block 30 is in a disc-shaped structure and attached to the inner wall at the opening of the air exhaust hole 28, through the rotation of horizontal and vertical separation post 20, when pouring into the thick liquid, the air is extruded to separation post 20 department, utilizes the centrifugal force that separation post 20 rotated the production, gets rid of centrifugal shutoff piece 30 and thick liquid to the outside on the one hand, and on the other hand, cooperation fan assembly 27's operation is taken out the air of low quality, realizes deriving in real time of air, avoids inside production bubble.
Those not described in detail in this specification are prior art to the public, and in the description of the present invention, "plurality" means two or more unless otherwise stated; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (7)
1. A method for injecting polymer chemical coal rock mass reinforcing agent for coal mine is characterized in that: the injection method comprises the following steps:
s1: firstly, moving a storage vehicle (1) to a working area, respectively injecting an A component and a B component into an A material storage cavity (2) and a B material storage cavity (3), drilling the rock wall of the working area, then inserting an injection rod (4) into the drilled hole channel, and propping a top plate (21) against the inner wall of the hole channel;
s2: before injection, the movable toothed ring (13) is rotated, the movable toothed ring (13) drives a screw rod (15) to rotate through a transfer gear (14) and a guide toothed sleeve (17), so that a sealing strip (18) is pushed to move in an air conveying groove (16), air is conveyed into the plugging air bag ring (12) through an air conveying pipe (121), the plugging air bag ring (12) is expanded to be in contact with the inner wall of a pore canal, the plugging air bag ring (12) is matched with a grout stop plug (8) and a tray (9) to fix an injection rod (4), and the pore canal is sealed into a plurality of areas through the plugging air bag ring (12);
s3: raw materials in the material storage cavity A (2) and the material storage cavity B (3) are conveyed to a static mixer (5) through a second conveying pipe (7) and a first conveying pipe (6) by a pump to realize instant mixing, and then are input into a pore channel through an injection rod (4) and an injection hole (10), the injection hole (10) at the top is not shielded, and the injection hole (10) at the bottom is sequentially blocked by baffle plates (11) with gradually improved hardness, so that a reinforcing agent is matched with a plugging air bag ring (12) to realize subarea conveying, and the reinforcing agent is continuously conveyed to permeate into peripheral cracks from inside to outside to realize expansion and filling reinforcement;
s4: when the reinforcing agent is injected, a motor (19) is started, the motor (19) drives a separation column (20) to rotate in a top plate (21), the separation column (20) rotates to throw out a centrifugal blocking block (30) by centrifugal force, so that an air suction hole (28) is opened, the motor (19) drives a guide column (24) to rotate in an air suction groove (23) through a fluted disc (22) and a movable toothed sleeve (25), the bottom of the guide column (24) drives a fan assembly (27) to rotate through a second bevel gear transmission assembly (26), further, the rotation of the fan assembly (27) can be utilized to suck air in a duct from the air suction groove (23) and the air suction hole (28), and meanwhile, the guide column (24) drives the separation column (20) which is transversely distributed on an injection rod (4) to rotate through a first bevel gear transmission assembly (241) to suck air in the duct which is partitioned by a blocked air bag ring (12), meanwhile, under the action of centrifugal force, the reinforcing agent is thrown away and cannot enter the air suction hole (28), air is extruded into the air suction hole (28) along with the entering of the reinforcing agent, the motor (19) stops running after the injection is finished, the centrifugal plugging block (30) resets under the action of the spring (29) to plug the air suction hole (28), the next use is facilitated, and the internal air is sucked away under the condition that the normal use of the reinforcing agent is not influenced;
in the step S1, an A material storage cavity (2) and a B material storage cavity (3) are respectively arranged inside the storage cart (1), the A material storage cavity (2) and the B material storage cavity (3) are respectively connected with a second conveying pipe (7) and a first conveying pipe (6) through a conveying pump, the second conveying pipe (7) and the first conveying pipe (6) are connected with an injection rod (4) through a static mixer (5), a slurry stop plug (8) and a tray (9) are sleeved at the lower end of the injection rod (4), the slurry stop plug (8) is positioned above the tray (9), an injection hole (10) is arranged on the outer side of the injection rod (4), a separation blade (11) is fixed in the injection hole (10), a plugging air bag ring (12) is sleeved outside the injection rod (4), and the inner wall of the plugging air bag ring (12) is communicated with an air conveying groove (16) through an air conveying pipe (121), and the gas transmission groove (16) is arranged in the injection rod (4), the bottom of the injection rod (4) is provided with a movable toothed ring (13) in an embedded manner, the movable toothed ring (13) is positioned below the tray (9), the movable toothed ring (13) is connected with a gear guide sleeve (17) through a transfer gear (14), the transfer gear (14) is installed in the side edge of the injection rod (4) in an embedded manner, the gear guide sleeve (17) is sleeved on a screw (15), a bearing of the screw (15) is installed in the gas transmission groove (16), a sealing strip (18) is sleeved on the screw (15) in a threaded manner, the top of the injection rod (4) is fixed with a motor (19) in an embedded manner, the output end of the motor (19) is connected with a separation column (20), the bearing of the separation column (20) is installed on the top of the injection rod (4), and the bearing of the top of the separation column (20) is connected with a top plate (21), the output shaft of the motor (19) is connected with a movable gear sleeve (25) through a fluted disc (22) in a meshing manner, the movable gear sleeve (25) is sleeved on a guide post (24), the guide post (24) is mounted in an air exhaust groove (23) in a bearing manner, the air exhaust groove (23) is arranged in the injection rod (4), the middle position of the guide post (24) is connected with another separation column (20) through a first bevel gear transmission component (241), the separation column (20) transversely penetrates through and is rotatably mounted on the outer side of the middle part of the injection rod (4) in a sealing manner, the bottom of the guide post (24) is connected with a fan component (27) through a second bevel gear transmission component (26), the fan component (27) is positioned in the position of the protruded opening at the bottom of the injection rod (4), the fan component (27) is positioned between a tray (9) and a movable gear ring (13), and an air exhaust hole (28) is formed in the inner part and the lateral side of the separation column (20) in a penetrating manner, and the air exhaust hole (28) is communicated with the air exhaust groove (23), and the outside of the air exhaust hole (28) is connected with a centrifugal plugging block (30) through a spring (29).
2. The injection method of the polymer chemical coal rock mass reinforcing agent for the coal mine according to claim 1, characterized in that: the four baffle plates (11) are made of rubber materials and distributed in the injection hole (10) at equal angles, the baffle plates (11) are designed to be of a fan-shaped structure, and the sum of the cross-sectional areas of the four baffle plates (11) is equal to the cross-sectional area of the injection hole (10).
3. The injection method of the polymer chemical coal rock mass reinforcing agent for the coal mine according to claim 1, characterized in that: the sealing strips (18) are attached and slide in the air conveying grooves (16) through screws (15), the distribution positions of the sealing strips (18) correspond to the distribution positions of the plugging air bag rings (12), the plugging air bag rings (12) are distributed on the injection rod (4) at equal intervals, and the positions of the air conveying grooves (16) matched with the plugging air bag rings (12) are distributed in the injection rod (4) in a partitioned mode.
4. The injection method of the polymer chemical coal rock mass reinforcing agent for the coal mine according to claim 1, characterized in that: the separation column (20) and the injection rod (4) share the same central axis at the top of the injection rod (4), the separation column (20) is distributed on the side of the injection rod (4) at equal angles, the air exhaust holes (28) on the separation column (20) at the top of the injection rod (4) are distributed transversely, and the air exhaust holes (28) on the separation column (20) at the side of the injection rod (4) are distributed longitudinally.
5. The injection method of the polymer chemical coal rock mass reinforcing agent for the coal mine according to claim 1, characterized in that: centrifugal shutoff piece (30) pass through spring (29) elastic sliding in convulsions hole (28), and convulsions hole (28) equidistance distribution on separation post (20) to the inner of centrifugal shutoff piece (30) is the inner of round platform shape structure and convulsions hole (28) and pastes mutually, and the outer end of centrifugal shutoff piece (30) is the inner wall of disc structure and convulsions hole (28) opening part and pastes mutually moreover.
6. The polymer chemical coal rock mass strengthening agent used in the injection method of the polymer chemical coal rock mass strengthening agent for coal mines according to any one of claims 1 to 5, characterized in that: the reinforcing agent is composed of a component A and a component B in a volume ratio of 1:1, wherein the component A is composed of the following raw materials:
polyether polyol: 75 to 96 percent;
catalyst: 0.4% -0.9%;
reinforcing agent: 5% -10%;
modifying agent: 2% -7%;
the component B is polyisocyanate.
7. The polymer chemical coal rock mass reinforcing agent for coal mines as claimed in claim 6, wherein: the component A is prepared by mixing polyether polyol, a catalyst, a reinforcing agent and a modifier, wherein the catalyst is triethylamine, the reinforcing agent is silicon dioxide, and the modifier is propenyl diglycol carbonate.
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| CN113882356A (en) * | 2021-10-14 | 2022-01-04 | 中铁隆工程集团有限公司 | Ground grouting reinforcement construction process |
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| US20070000841A1 (en) * | 2003-09-11 | 2007-01-04 | R3 Pump Technologies, Llc | Directing fluid flow in remediation and other applications |
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