CN114805728B - 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
- Publication number
- CN114805728B CN114805728B CN202210480202.5A CN202210480202A CN114805728B CN 114805728 B CN114805728 B CN 114805728B CN 202210480202 A CN202210480202 A CN 202210480202A CN 114805728 B CN114805728 B CN 114805728B
- Authority
- CN
- China
- Prior art keywords
- injection
- reinforcing agent
- air
- injection rod
- coal
- 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.)
- Active
Links
Classifications
-
- 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 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
Abstract
The application discloses a macromolecular chemical coal-rock mass reinforcing agent for a coal mine 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: 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 pumping; s4: starting the motor, driving the fan assembly to rotate through the second bevel gear transmission assembly at the bottom of the guide pillar, extracting gas in the pore canal from the air extraction groove and the air extraction hole, and simultaneously driving the separation columns transversely distributed on the injection rod to rotate through the first bevel gear transmission assembly by the guide pillar to absorb air in the pore canal of the blocked air bag ring partition. The macromolecular chemical coal-rock mass reinforcing agent for the coal mine and the injection method thereof realize regional injection and diffusion, simultaneously extract internal air in real time, avoid air bubbles and improve the strength of coal-rock mass.
Description
Technical Field
The application relates to the technical field of coal and rock mass reinforcement, in particular to a polymer chemical coal and rock mass reinforcing agent for a coal mine and an injection method thereof.
Background
In the coal mining process, broken coal rock mass is formed by geological structure, primary cracks and mining pressure, the conditions of ledge, roof fall and the like of a working area are easily caused, mining safety is influenced, mining progress is severely restricted, a grouting process is adopted in the prior art for reinforcing the coal rock mass, reinforcing agents are injected into the coal rock mass, the coal rock mass is reinforced after permeation expansion, but the following problems exist in the existing coal rock mass reinforcing agents and injection methods thereof:
in the prior art, the injection rod is inserted into a pre-drilled hole to perform grouting operation, the reinforcing agent is extruded from the front end of the injection rod to gradually spread into the whole hole channel and the gap, the segmented grouting operation is inconvenient to realize, the slurry which is easy to flow back in the shallow part and the middle part is less, the slurry is unevenly diffused, the situation of weak surfaces exists, air exists in the hole channel and the gap, in the prior art, the air in the hole channel and the gap is inconvenient to discharge during grouting, air bubbles are easy to appear, the internal strength is seriously influenced, and the expected effect is difficult to achieve.
Aiming at the problems, innovative design is urgently needed on the basis of the original coal rock mass reinforcing agent and the injection method thereof.
Disclosure of Invention
The application aims to provide a polymer chemical coal-rock mass reinforcing agent for a coal mine and an injection method thereof, which are used for solving the problems that the coal-rock mass reinforcing agent and the injection method thereof are inconvenient to realize sectional grouting operation and simultaneously inconvenient to discharge internal air during grouting in the prior art.
In order to achieve the above purpose, the present application provides the following technical solutions: an injection method of a macromolecular chemical coal-rock mass reinforcing agent for a coal mine, which 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 a drilled hole, and propping a top plate 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 gear guide 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 canal, the injection rod is fixed by the plugging air bag ring in combination with the slurry stop plug and the tray, and the pore canal 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, instant mixing is realized, then an injection rod and an injection hole are input into a pore canal, the uppermost injection hole is not shielded, and the injection hole below is blocked by a blocking sheet with gradually increased hardness in sequence, so that the reinforcing agent is matched with a sealing airbag ring to realize partition conveying, and along with continuous conveying of the reinforcing agent, expansion, filling and reinforcement are realized by penetrating into a peripheral crack from inside to outside;
s4: when the reinforcing agent is injected, the motor is started, the motor drives the separation column to rotate in the top plate, the centrifugal plugging block is thrown out by the rotation of the separation column by utilizing the centrifugal force, so that the air suction hole is opened, meanwhile, the motor drives the guide column to rotate in the air suction groove through the fluted disc and the movable toothed sleeve, the bottom of the guide column drives the fan assembly to rotate through the second conical tooth transmission assembly, the air in the pore canal can be pumped out from the air suction groove and the air suction hole by utilizing the rotation of the fan assembly, meanwhile, the guide column drives the separation column transversely distributed on the injection rod to rotate through the first conical tooth transmission assembly, air in the pore canal of the blocked air bag ring is sucked, meanwhile, the reinforcing agent is thrown away under the action of the centrifugal force, cannot enter the air suction hole, and is extruded into the air suction hole along with the entering of the reinforcing agent, the operation of the motor is stopped after the injection, and the centrifugal plugging block is reset to the air suction hole under the action of the spring, so that the next use is facilitated, and the inside air is pumped out under the condition that the normal use of the reinforcing agent is not influenced;
in the step S1, an A material storage cavity and a B material storage cavity are respectively arranged in the storage trolley, the A material storage cavity and the B material storage cavity are respectively connected with a second conveying pipe and a first conveying pipe through a conveying pump, the second conveying pipe and the first conveying pipe are connected with an injection rod through a static mixer, a slurry stop plug and a tray are sleeved at the lower end of the injection rod, the slurry stop plug is positioned above the tray, an injection hole is arranged at the outer side of the injection rod, a baffle is fixed in the injection hole at the lower part, a sealing air bag ring is sleeved outside the injection rod, the inner wall of the sealing air bag ring is communicated with an air conveying groove through an air conveying pipe, the air conveying groove is arranged in the injection rod, a movable toothed ring is sleeved at the bottom of the injection rod and is positioned below the tray, the movable toothed ring is connected with a guide toothed sleeve through a transfer gear, the transfer gear is embedded and rotatably arranged in the side edge of the injection rod, the guide tooth sleeve is sleeved on the screw rod, the screw rod bearing is arranged in the gas transmission groove, the screw rod is provided with a sealing strip in a threaded sleeve manner, the top of the injection rod is embedded and fixedly provided with a motor, the output end of the motor is connected with a separation column, the separation column bearing is arranged at the top of the injection rod, the top bearing of the separation column is connected with a top plate, the output shaft of the motor is connected with a movable tooth sleeve in meshed manner through a fluted disc, the movable tooth sleeve is sleeved on the guide column, the guide column bearing is arranged in the gas extraction groove, the gas extraction groove is arranged in the injection rod, the middle position of the guide column is connected with another separation column through a first bevel gear transmission component, the separation column transversely penetrates and is rotatably arranged at the outer side of the middle of the injection rod, the bottom of the guide column is connected with a fan component through a second bevel gear transmission component, and the fan assembly is located inside the protruding opening position of injection rod bottom to the fan assembly is located between tray and the movable ring gear, the inside and the avris of spliced pole link up and have seted up the exhaust vent, and exhaust vent link up with the air extraction groove mutually, and the outside of exhaust vent has centrifugal shutoff piece through spring coupling.
Preferably, the baffle plates are made of rubber materials and distributed at equal angles in the injection hole, the baffle plates are of a fan-shaped structure, the sum of the cross-sectional areas of the four baffle plates is equal to the cross-sectional area of the injection hole, and the baffle plates are used for blocking the injection hole, so that slurry can be injected from inside to outside in a segmented mode.
Preferably, the sealing strip is in fit sliding in the gas transmission groove through the screw rod, the distribution position of the sealing strip corresponds to the distribution position of the plugging air bag rings, the plugging air bag rings are distributed on the injection rod at equal intervals, the positions of the gas transmission groove matched with the plugging air bag rings are distributed in the injection rod, the sealing strip is driven by the screw rod to move, gas is pressed into the corresponding plugging air bag rings, the injection rod is fixed through the plugging air bag rings, and meanwhile, the pore channels are partitioned.
Preferably, the separation column is arranged at the top of the injection rod and is concentric with the injection rod, the separation column is arranged at the side edge of the injection rod at equal angles, the air suction holes on the separation column at the top of the injection rod are transversely distributed, the air suction holes on the separation column at the side edge of the injection rod are longitudinally distributed, and the rotation of the separation column separates the slurry hole air by utilizing the action of centrifugal force.
Preferably, the centrifugal plugging block elastically slides in the air suction hole through a spring, the air suction hole is distributed on the separation column at equal angles, the inner end of the centrifugal plugging block is of a circular table-shaped structure and is attached to the inner end of the air suction hole, the outer end of the centrifugal plugging block is of a disc-shaped structure and is attached to the inner wall of the opening of the air suction hole, after the centrifugal column rotates, the centrifugal plugging block is thrown to the outside and is matched with the fan assembly to suck air, and meanwhile slurry is retained outside by centrifugal force and cannot be sucked out along with the centrifugal force.
Preferably, the reinforcing agent consists of an A component and a B component in a volume of 1:1, wherein the A component consists of the following raw materials:
polyether polyol: 75% -96%;
catalyst: 0.4 to 0.9 percent;
reinforcing agent: 5% -10%;
and (3) a modifier: 2% -7%;
the component B is polyisocyanate.
Preferably, 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, expansion is realized by mixing the component A and the component B, and the strength after expansion is improved.
Compared with the prior art, the application has the beneficial effects that:
1. according to the application, the partition grouting mechanism is arranged, the blocking air bag rings are sleeved at equal intervals on the outer side of the grouting rod, the sealing strip can be driven to move in the air conveying groove by the rotation of the movable toothed ring in cooperation with the rotation of the movable toothed ring, the sealing strip can be driven to move in the air conveying groove, air in the air conveying groove is extruded into the blocking air bag ring through the air conveying pipe, the grouting rod is fixed in the pore canal by utilizing the expanded blocking air bag rings, meanwhile, the pore canal is divided into a plurality of grouting areas by utilizing the plurality of blocking air bag rings, and grouting is carried out in the grouting areas in a plurality of directions by matching with injection holes distributed at equal angles, so that slurry can move in a small range, the slurry can conveniently and uniformly enter the gaps to expand, the reverse flow of the shallow part and the middle part is less when the slurry is injected into the end part of the whole grouting rod, the slurry is prevented from being uniformly injected and solidified, the internal reinforcing operation of the coal rock is realized, the slurry overflows from the uppermost injection hole through the baffle plate in the lower part, after the slurry is injected in the upper part, the grouting is carried out again, the lower slurry is prevented from dispersing the flow, and the lower slurry is gradually increased in the grouting area by the baffle plate in the injection direction, the grouting holes are beneficial to the partition injection holes;
2. according to the application, the air real-time extraction mechanism is arranged, the motor drives the upper separation column to operate, meanwhile, the motor drives the guide column to rotate through the fluted disc and the movable toothed sleeve, so that the guide column can drive the middle separation column to rotate through the first conical tooth transmission assembly, meanwhile, the guide column drives the fan assembly to rotate through the second conical tooth transmission assembly, the air extraction operation is realized, the centrifugal plugging block moves outwards under the action of centrifugal force in the rotation process of the separation column, so that the air extraction hole is opened, meanwhile, when the separation column rotates, the slurry nearby can be thrown away, the slurry is prevented from entering the air extraction hole, along with the injection of the slurry, the air is extruded nearby the separation column, the air can be extracted in real time by utilizing the difference of the weight of the slurry and the air and the rotation of the fan assembly, the injection of the slurry is not influenced, the operation is simple, the slurry and the air inside can be effectively prevented from forming bubbles, the improvement of compactness after the expansion is facilitated, and the resistance of the coal rock mass is improved;
3. according to the application, the triethylamine, the silicon dioxide and the propenyl diglycol carbonate are added into the raw materials, the triethylamine with higher activity is used for improving the viscosity of the reinforcing agent, so that the reinforcing agent is convenient to be in close contact with gaps and pore channels, the silicon dioxide is used for improving the compactness of the reinforcing agent after expansion, the pressure resistance is improved, and meanwhile, the propenyl diglycol carbonate is used for modification, so that the fracture strength, the elastic modulus, the tensile strength and the like are improved, and the stability of a coal rock mass is further improved;
4. in summary, the grouting device ensures that the slurry uniformly enters the gap by carrying out regional grouting in the pore canal and matching with the real-time extraction of air, avoids air bubbles, improves the stability of the coal and rock mass after the reinforcing agent is expanded and solidified in physical measures, improves the viscosity and strength of the curing agent in chemical measures, improves the supporting strength of the reinforcing agent on the coal and rock mass by utilizing the dual improvements of physics and chemistry, improves the safety in the mine canal, has simple integral operation, uses less equipment, saves energy and is convenient for on-site and quick operation.
Drawings
FIG. 1 is a schematic view of the present application in a front cross-section;
FIG. 2 is a schematic side sectional view of a plugging air bag ring according to the present application;
FIG. 3 is a schematic top view of a cross-sectional structure of a plugging balloon ring according to the present application;
FIG. 4 is a schematic side view of a baffle according to the present application;
FIG. 5 is a schematic side sectional view of an injection rod according to the present application;
FIG. 6 is an enlarged schematic view of the structure of FIG. 5A according to the present application;
FIG. 7 is an enlarged schematic view of the structure of FIG. 5B according to the present application;
FIG. 8 is a schematic top view of an injection rod according to the present application.
In the figure: 1. a storage vehicle; 2. a material storage cavity A; 3. a material storage cavity B; 4. an injection rod; 5. a static mixer; 6. a first feed delivery tube; 7. a second feed delivery tube; 8. a grout stop plug; 9. a tray; 10. an injection hole; 11. a baffle; 12. plugging the air sac ring; 121. a gas pipe; 13. a movable toothed ring; 14. a transfer gear; 15. a screw; 16. a gas transmission groove; 17. a tooth guiding sleeve; 18. a sealing strip; 19. a motor; 20. a separation column; 21. a top plate; 22. fluted disc; 23. an air extraction groove; 24. a guide post; 241. a first bevel gear drive assembly; 25. a movable tooth sleeve; 26. a second bevel gear drive assembly; 27. a fan assembly; 28. an air suction hole; 29. a spring; 30. and (5) centrifuging the plugging block.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1-8, the present application provides a technical solution: the high polymer chemical coal-rock mass reinforcing agent for the coal mine and the injection method thereof are characterized in that a storage vehicle 1, an A material storage cavity 2, a B material storage cavity 3, an injection rod 4, a static mixer 5, a first conveying pipe 6, a second conveying pipe 7, a slurry stop plug 8, a tray 9, an injection hole 10, a baffle plate 11, a blocking air bag ring 12, an air conveying pipe 121, a movable toothed ring 13, a transfer gear 14, a screw 15, an air conveying groove 16, a tooth guide sleeve 17, a sealing strip 18, a motor 19, a separation column 20, a top plate 21, a fluted disc 22, an air suction groove 23, a guide column 24, a first bevel gear transmission assembly 241, a movable tooth sleeve 25, a second bevel gear transmission assembly 26, a fan assembly 27, an air suction hole 28, a spring 29 and a centrifugal blocking block 30;
example 1
Referring to fig. 1-4, the implantation method comprises the steps of:
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 a drilled hole, and propping a top plate 21 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 gear guide 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 matched with the slurry 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: the raw materials in the material storage cavity A2 and the material storage cavity B3 are conveyed to the static mixer 5 by pumping through the second conveying pipe 7 and the first conveying pipe 6, instant mixing is realized, then the raw materials are conveyed into a pore canal by the injection rod 4 and the injection hole 10, the uppermost injection hole 10 is not shielded, the lower injection hole 10 is blocked by the baffle 11 with gradually increased hardness in sequence, so that the reinforcing agent is matched with the blocking airbag ring 12 to realize partition conveying, and along with continuous conveying of the reinforcing agent, expansion and filling reinforcement are realized in peripheral cracks from inside to outside;
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 centrifugal plugging block 30 is thrown out by the rotation of the separation column 20 by utilizing centrifugal force, so that the air suction hole 28 is opened, meanwhile, the motor 19 drives the guide pillar 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 pillar 24 drives the fan assembly 27 to rotate through the second conical tooth transmission assembly 26, and then the air in the pore channel can be pumped out of the air suction groove 23 and the air suction hole 28 by utilizing the rotation of the fan assembly 27, meanwhile, the guide pillar 24 drives the separation column 20 transversely distributed on the injection rod 4 to rotate through the first conical tooth transmission assembly 241, so that air in the pore channel partitioned by the plugged air bag ring 12 is sucked, and meanwhile, the reinforcing agent cannot enter the air suction hole 28 under the action of centrifugal force, the air is extruded into the air suction hole 28, the motor 19 is stopped to operate after the injection is finished, the centrifugal plugging block 30 is reset to plug the air suction hole 28 under the action of the spring 29, and the normal air is conveniently used under the condition that the use of the reinforcing agent is not influenced;
in the above steps, the material storage cavity 2 and the material storage cavity 3 are respectively arranged in the material storage vehicle 1 in the step S1, the material storage cavity 2 and the material storage cavity 3 in the material storage vehicle are respectively connected with the second material conveying pipe 7 and the first material conveying pipe 6 through the conveying pump, the second material conveying pipe 7 and the first material conveying pipe 6 are connected with the injection rod 4 through the static mixer 5, the slurry stop plug 8 and the tray 9 are sleeved at the lower end position of the injection rod 4, the slurry stop plug 8 is positioned above the tray 9, the injection hole 10 is arranged at the outer side of the injection rod 4, the baffle plate 11 is fixed in the injection hole 10 at the lower part, the sealing air bag ring 12 is sleeved outside the injection rod 4, the inner wall of the sealing air bag ring 12 is communicated with the air conveying groove 16 through the air conveying pipe 121, the air conveying groove 16 is arranged in the injection rod 4, the movable toothed ring 13 is sleeved at the bottom position of the injection rod 4, the movable toothed ring 13 is positioned below the tray 9, the movable toothed ring 13 is connected with a toothed guiding sleeve 17 through a transfer gear 14, the transfer gear 14 is embedded and rotatably arranged in the side edge of the injection rod 4, the toothed guiding sleeve 17 is sleeved on a screw rod 15, the screw rod 15 is arranged in a gas transmission groove 16 in a bearing manner, sealing strips 18 are sleeved on the screw rod 15 in a threaded manner, four sealing strips 11 are distributed in the injection hole 10 at equal angles by adopting rubber materials, the sum of the cross sectional areas of the four sealing strips 11 is equal to the cross sectional area of the injection hole 10, the sealing strips 18 are in fit sliding in the gas transmission groove 16 through the screw rod 15, the distribution position of the sealing strips 18 corresponds to the distribution position of the sealing airbag rings 12, the sealing airbag rings 12 are distributed on the injection rod 4 at equal intervals, and the positions of the gas transmission grooves 16 matched with the sealing airbag rings 12 are distributed in the injection rod 4 in a partition manner;
the reinforcing agent consists of a component A and a component B in a volume of 1:1, wherein the component A consists of the following raw materials:
polyether polyol: 75% -96%;
catalyst: 0.4 to 0.9 percent;
reinforcing agent: 5% -10%;
and (3) a modifier: 2% -7%;
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 cooperation of the catalyst, the reinforcing agent and the modifying agent, and meanwhile, the blocking of the blocking air bag rings 12 is matched through the use of a plurality of blocking air bag rings 11, so that the partition injection of slurry is realized, the slurry flowing space is reduced, the permeation effect of the slurry is improved, and the uneven diffusion of the slurry in shallow areas and at the interrupt positions is avoided;
example 2
Referring to fig. 1 and 5-8, a motor 19 is embedded and fixed at the top of an injection rod 4, an output end of the motor 19 is connected with a separation column 20, the separation column 20 is installed at the top of the injection rod 4 in a bearing manner, the top bearing of the separation column 20 is connected with a top plate 21, a movable tooth sleeve 25 is connected to an output shaft of the motor 19 in a meshing manner through a tooth disc 22, the movable tooth sleeve 25 is sleeved on a guide column 24, the guide column 24 is installed in a suction groove 23 in a bearing manner, the suction groove 23 is arranged in the injection rod 4, the middle position of the guide column 24 is connected with another separation column 20 through a first bevel gear assembly 241, the separation column 20 transversely penetrates through and is rotatably installed at the outer side of the middle of the injection rod 4 in a sealing manner, the bottom of the guide column 24 is connected with a fan assembly 27 through a second bevel gear assembly 26, the fan assembly 27 is positioned in the position of a protruding out of an opening at the bottom of the injection rod 4, the fan assembly 27 is positioned between the tray 9 and the movable toothed ring 13, the air suction holes 28 are arranged in the separating column 20 in a penetrating way on the inner side and the side, the air suction holes 28 are communicated with the air suction grooves 23, the centrifugal blocking blocks 30 are connected to the outer parts of the air suction holes 28 through springs 29, the separating column 20 is concentric with the injecting rod 4 at the top of the injecting rod 4, the separating column 20 is distributed at the side of the injecting rod 4 at the same angle, the air suction holes 28 on the separating column 20 at the top of the injecting rod 4 are transversely distributed, the air suction holes 28 on the separating column 20 at the side of the injecting rod 4 are longitudinally distributed, the centrifugal blocking blocks 30 elastically slide in the air suction holes 28 through springs 29, the air suction holes 28 are distributed on the separating column 20 at the same angle, the inner ends of the centrifugal blocking blocks 30 are in a round table structure and are attached to the inner ends of the air suction holes 28, the outer ends of the centrifugal blocking blocks 30 are in a disc structure and are attached to the inner walls at the opening positions of the air suction holes 28, through the rotation of horizontal and vertical separation post 20, when injecting the thick liquid, the air is extruded to separation post 20 department, utilizes the centrifugal force that separation post 20 rotated and produced, on the one hand gets rid of centrifugal shutoff piece 30 and thick liquid outside, on the other hand, cooperates the operation of fan unit 27, draws out low-quality air, realizes the real-time derivation of air, avoids inside bubble that produces.
What has not been described in detail in this specification is prior art that is well known to those skilled in the art, and in the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application. 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 application, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Although the present application has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present application.
Claims (7)
1. A method for injecting a macromolecular chemical coal-rock mass reinforcing agent for a coal mine is characterized by comprising the following steps: 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 a drilled hole, and propping a top plate (21) 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 gear guide 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 plugging air bag ring (12) is matched with the slurry stop plug (8) and the tray (9) to fix the injection rod (4), and the pore canal is sealed into a plurality of areas through the plugging air bag ring (12);
s3: the raw materials in the material storage cavity A (2) and the material storage cavity B (3) are conveyed to the static mixer (5) through the second conveying pipe (7) and the first conveying pipe (6) by pumping, instant mixing is achieved, then the raw materials are conveyed into a pore canal by the injection rod (4) and the injection hole (10), the uppermost injection hole (10) is not shielded, the lower injection hole (10) is blocked by the blocking piece (11) with gradually increased hardness in sequence, so that the reinforcing agent is matched with the blocking airbag ring (12) to achieve partition conveying, and along with continuous conveying of the reinforcing agent, expansion, filling and reinforcement are achieved by penetrating into a peripheral crack from inside to outside;
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 centrifugal blocking block (30) is thrown out by the rotation of the separation column (20) through centrifugal force, 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 tooth sleeve (25), the bottom of the guide column (24) drives the fan assembly (27) through the second conical tooth transmission assembly (26), the fan assembly (27) can be further utilized to rotate, air in the pore channel can be pumped out from the air suction groove (23) and the air suction hole (28) through the rotation of the fan assembly (27), meanwhile, the guide column (24) drives the separation column (20) transversely distributed on the injection rod (4) through the first conical tooth transmission assembly (241), air in the pore channel partitioned by the air bag ring (12) is sucked, meanwhile, the reinforcing agent cannot enter the air suction hole (28) under the action of centrifugal force, the reinforcing agent is extruded into the air suction hole (28), the air suction hole (28) is stopped after the air suction hole (28) is extruded, and the normal operation of the air suction hole (28) is stopped under the action of the suction hole (28), and the normal blocking is not influenced, and the normal air blocking is blocked under the condition;
in the step S1, an A material storage cavity (2) and a B material storage cavity (3) are respectively formed in the storage vehicle (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 position of the injection rod (4), the slurry stop plug (8) is positioned above the tray (9), an injection hole (10) is formed in the outer side of the injection rod (4), a baffle plate (11) is fixed in the injection hole (10) at the lower part, a blocking ring (12) is sleeved outside the injection rod (4), the inner wall of the blocking ring (12) is communicated with a conveying groove (16) through a conveying pipe (121), the conveying groove (16) is formed in the injection rod (4), a tooth ring (13) is arranged at the lower end position of the injection rod (4), a tooth ring (13) is embedded in the tooth ring (13) through a movable tooth ring (13), the tooth ring (13) is movably connected with the tooth ring (13), the transfer gear (14) is embedded and rotatably arranged in the injection rod (4), the guide tooth sleeve (17) is sleeved on the screw rod (15), the screw rod (15) is arranged in the gas transmission groove (16) in a bearing way, the screw rod (15) is sleeved with the sealing strip (18) in a threaded way, the motor (19) is embedded and fixed at the top of the injection rod (4), the output end of the motor (19) is connected with the separation column (20), the separation column (20) is arranged at the top of the injection rod (4) in a bearing way, the top bearing of the separation column (20) is connected with the top plate (21), the movable tooth sleeve (25) is connected on the output shaft of the motor (19) in a meshed way through the fluted disc (22), the movable tooth sleeve (25) is sleeved on the guide column (24), the guide column (24) is arranged in the air suction groove (23) in a bearing way, the middle position of the guide column (24) is connected with the other separation column (20) through the first conical transmission component (241), the separation column (20) is connected with the middle part of the injection rod (24) through the first conical transmission component (27), the middle part of the separation column (24) is arranged at the bottom of the second conical transmission component (24) in a rotating way, the middle part of the fan (27) is connected with the middle part of the fan (27), and fan assembly (27) are located the inside of injection pole (4) bottom protrusion open position to fan assembly (27) are located between tray (9) and movable ring gear (13), interior and the avris of separating post (20) link up and have seted up exhaust vent (28), and exhaust vent (28) link up with air extraction groove (23), and the outside of exhaust vent (28) is connected with centrifugal shutoff piece (30) through spring (29).
2. The method for injecting the polymer chemical coal-rock mass reinforcing agent for the coal mine according to claim 1, wherein the method comprises the following steps: the baffle plates (11) are made of rubber materials and distributed in the injection hole (10) at equal angles, the baffle plates (11) are of a fan-shaped structure design, 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 method for injecting the polymer chemical coal-rock mass reinforcing agent for the coal mine according to claim 1, wherein the method comprises the following steps: the sealing strips (18) are adhered and slide in the air conveying grooves (16) through the screw rods (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 partitioning mode.
4. The method for injecting the polymer chemical coal-rock mass reinforcing agent for the coal mine according to claim 1, wherein the method comprises the following steps: the separation column (20) is arranged at the top of the injection rod (4) and is concentric with the injection rod (4), the separation column (20) is distributed at the side edge of the injection rod (4) at equal angles, the air draft holes (28) on the separation column (20) at the top of the injection rod (4) are transversely distributed, and the air draft holes (28) on the separation column (20) at the side edge of the injection rod (4) are longitudinally distributed.
5. The method for injecting the polymer chemical coal-rock mass reinforcing agent for the coal mine according to claim 1, wherein the method comprises the following steps: the centrifugal plugging block (30) elastically slides in the air suction hole (28) through the spring (29), the air suction hole (28) is distributed on the separation column (20) at equal angles, the inner end of the centrifugal plugging block (30) is of a truncated cone-shaped structure and is attached to the inner end of the air suction hole (28), and the outer end of the centrifugal plugging block (30) is of a disc-shaped structure and is attached to the inner wall of the opening of the air suction hole (28).
6. The method for injecting the polymer chemical coal-rock mass reinforcing agent for the coal mine according to any one of claims 1 to 5, wherein: the used macromolecular chemical coal rock mass reinforcing agent consists of a component A and a component B, wherein the volume of the component A is 1:1, and the component A consists of the following raw materials:
polyether polyol: 75% -96%;
catalyst: 0.4 to 0.9 percent;
reinforcing agent: 5% -10%;
and (3) a modifier: 2% -7%;
the component B is polyisocyanate.
7. The method for injecting the polymer chemical coal-rock mass reinforcing agent for the coal mine, which is characterized by comprising the following steps of: 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, and the modifying agent is propenyl diglycol carbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210480202.5A CN114805728B (en) | 2022-05-05 | 2022-05-05 | Polymer chemical coal-rock mass reinforcing agent for coal mine and injection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210480202.5A CN114805728B (en) | 2022-05-05 | 2022-05-05 | Polymer chemical coal-rock mass reinforcing agent for coal mine and injection method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114805728A CN114805728A (en) | 2022-07-29 |
| CN114805728B true CN114805728B (en) | 2023-09-15 |
Family
ID=82512108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210480202.5A Active CN114805728B (en) | 2022-05-05 | 2022-05-05 | Polymer chemical coal-rock mass reinforcing agent for coal mine and injection method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114805728B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105001397A (en) * | 2015-05-21 | 2015-10-28 | 淄博润义金环保新材料科技有限公司 | Tunnel strengthening polyurethane material and preparation method thereof |
| CN106243307A (en) * | 2016-08-14 | 2016-12-21 | 邢延团 | A kind of mining macromolecule reinforcement material, filing provision and reinforcement means |
| CN110172973A (en) * | 2019-05-23 | 2019-08-27 | 上海长凯岩土工程有限公司 | A kind of grouting method of combined steel tube pile structure |
| CN113090218A (en) * | 2021-05-17 | 2021-07-09 | 重庆工程职业技术学院 | Coal mine permeable hole plugging device and plugging method thereof |
| CN113882356A (en) * | 2021-10-14 | 2022-01-04 | 中铁隆工程集团有限公司 | Ground grouting reinforcement construction process |
| KR102351566B1 (en) * | 2021-06-16 | 2022-01-13 | 이돈 | Device for boring and grouting |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070000841A1 (en) * | 2003-09-11 | 2007-01-04 | R3 Pump Technologies, Llc | Directing fluid flow in remediation and other applications |
| US20210324258A1 (en) * | 2020-02-14 | 2021-10-21 | Laurence E. Allen, III | Protection of Structures with Subterranean Injection of Lignocellulosic Solids |
-
2022
- 2022-05-05 CN CN202210480202.5A patent/CN114805728B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105001397A (en) * | 2015-05-21 | 2015-10-28 | 淄博润义金环保新材料科技有限公司 | Tunnel strengthening polyurethane material and preparation method thereof |
| CN106243307A (en) * | 2016-08-14 | 2016-12-21 | 邢延团 | A kind of mining macromolecule reinforcement material, filing provision and reinforcement means |
| CN110172973A (en) * | 2019-05-23 | 2019-08-27 | 上海长凯岩土工程有限公司 | A kind of grouting method of combined steel tube pile structure |
| CN113090218A (en) * | 2021-05-17 | 2021-07-09 | 重庆工程职业技术学院 | Coal mine permeable hole plugging device and plugging method thereof |
| KR102351566B1 (en) * | 2021-06-16 | 2022-01-13 | 이돈 | Device for boring and grouting |
| CN113882356A (en) * | 2021-10-14 | 2022-01-04 | 中铁隆工程集团有限公司 | Ground grouting reinforcement construction process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114805728A (en) | 2022-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109695575B (en) | Non-liquid-filling centrifugal pump | |
| CN114805728B (en) | Polymer chemical coal-rock mass reinforcing agent for coal mine and injection method thereof | |
| CN108361060A (en) | Coal mine backspin mixes Self-expansion type gas extraction borehole rapid hole sealing device and method | |
| CN111889723A (en) | Over-and-under type drilling equipment | |
| CN108265769B (en) | Seamless grooving machine for thin-wall continuous wall and construction process thereof | |
| CN115492618A (en) | Anchor rod trolley construction equipment and construction process thereof | |
| CN210460617U (en) | Automatic dosing and adjusting injection device for oil production well | |
| CN114458170A (en) | Highway engineering road surface drilling system | |
| CN210002388U (en) | vacuum preloading drain pipe application device | |
| CN110538506B (en) | Transparent soil pore liquid recovery device and recovery method | |
| CN220565210U (en) | Grouting device for coal mine geological water shutoff | |
| CN212690009U (en) | Sand mixing port assembly and sand mixing truck | |
| CN220599703U (en) | Gasbag dado formula drill bit diversion rectangle shallow hole bores machine | |
| SU1193268A1 (en) | Method of isolating absorption formations | |
| CN220599701U (en) | Synchronous telescopic and turning rectangular shallow hole drill for air sac wall protection type drill bit | |
| CN219175240U (en) | Abandoned pumping well grouting sealing filling device | |
| CN220726275U (en) | Hydraulic fracturing equipment for pushing working face | |
| CN113266302B (en) | Double-liquid grouting hole packer | |
| CN211215954U (en) | Spraying device for coal mining | |
| RU2726086C1 (en) | Method of waterproofing well annular space and composition of grouting mixture for its implementation | |
| CN220599702U (en) | Balloon wall protection type drill bit turning rectangular deep hole drilling machine | |
| CN220226971U (en) | Device for filling ceramsite concrete in cavity of cave-collapse in cavity roof in construction of TBM tunnel | |
| CN216240638U (en) | Slag charge on-site utilization system for full-face vertical shaft tunneling machine | |
| CN220580954U (en) | Drill bit diversion rectangular shallow hole drill machine suitable for soil stratum | |
| CN216224047U (en) | Pneumatic agitator of useless emulsified oil |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |