Polluted coal well sleeve valve pipe grouting device

Abstract

The utility model discloses a polluted coal well sleeve valve pipe grouting device, which relates to the technical field of geotechnical engineering grouting, and comprises a pretreatment dewatering mechanism and a sleeve valve pipe inner cylinder arranged in the pretreatment dewatering mechanism, the pretreatment dewatering mechanism comprises a sleeve valve pipe outer cylinder, first drilling threads are fixedly installed on the outer side of the sleeve valve pipe outer cylinder, water conveying holes are formed in the sleeve valve pipe outer cylinder at equal intervals in the vertical direction, filter screens are fixed in the water conveying holes, and the filter screens are fixedly connected with the water conveying holes. When soil grouting is carried out, the water content of soil is firstly monitored, then grouting reinforcement is carried out on an area with the highest water content, water conveying of the soil is carried out through the water conveying holes in the sleeve valve pipe outer cylinder, pore water in the soil enters the sleeve valve pipe outer cylinder through the water conveying holes, and then grouting reinforcement is carried out. And pore water is discharged, so that the effect of reducing the soil moisture content is achieved.

Description

A grouting device for sleeve valve pipes in contaminated coal mines Technical Field

[0001] This utility model relates to the field of grouting technology in geotechnical engineering, specifically to a sleeve valve pipe grouting device for contaminated coal mines. Background Technology

[0002] Sleeve valve grouting is an economical and practical grouting process. Its greatest advantage is its strong adaptability and convenience. It is widely used in road reinforcement, building correction and foundation reinforcement, and seepage prevention and plugging projects. Sleeve valve grouting in coal mines is a common technology for underground strata reinforcement and seepage prevention in coal mines. Grout is injected into coal seam fissures or loose strata through sleeve valves to improve foundation stability, control water inflow, or prevent collapse.

[0003] Publication No. CN113832977B discloses a grouting structure for a sleeve valve tube. A sleeve is fitted over a first and second elastic ring that undergoes elastic deformation after being compressed. The outer diameter of the sleeve is smaller than the inner diameter of the sleeve valve tube, leaving a gap between the sleeve and the sleeve valve tube. This gap allows air pressure to pass through the upper and lower ends of the sleeve inside the sleeve valve tube, facilitating the insertion or removal of the sleeve from the sleeve valve tube. This also facilitates the insertion or removal of the grouting head within the sleeve. After the grouting head is positioned at a suitable depth, its position is fixed, and the sleeve is removed from between the sleeve valve tube and the grouting head. This allows the first and second elastic rings to partially recover their elastic deformation and abut against the inner wall of the sleeve valve tube, thus elastically sealing the space between the sleeve valve tube and the grouting head. However, this patent still has the following problems in practical use:

[0004] While the sleeve valve grouting structure can achieve layered grouting of soil layers at different depths, it requires drilling before inserting the sleeve valve and injecting casing material, making the operation cumbersome. Before grouting, the soil moisture content needs to be monitored, as different areas have different moisture contents. Grouting should be carried out on areas with higher moisture content first. When the soil moisture content is high, it may cause difficulties in grout diffusion and reduce the soil reinforcement effect. In soils with high moisture content, the pores are occupied by water, making it difficult for the grout to effectively split and diffuse, thus limiting the reinforcement range. Pre-treatment to reduce water content in soils with high moisture content is not possible, thereby affecting the grouting effect in that area.

[0005] Therefore, a grouting device for sleeve valve pipes in contaminated coal mines is proposed to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this utility model is to provide a grouting device for sleeve valve pipes in contaminated coal mines, in order to solve the problems mentioned in the background art, which require drilling before inserting the sleeve valve pipe and injecting casing material, making the operation cumbersome. Before grouting the soil, the soil moisture content needs to be monitored. Different areas have different moisture contents, so grouting should be carried out on areas with higher moisture content first. When the soil moisture content is high, it may lead to difficulties in grout diffusion and reduce the soil reinforcement effect. In soils with high moisture content, the pores are occupied by water, making it difficult for the grout to effectively split and diffuse, resulting in a limited reinforcement range. It is also impossible to pre-treat and dewater the soil with high moisture content, thus affecting the grouting effect in that area.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a sleeve valve pipe grouting device for contaminated coal mines, including a pretreatment dewatering mechanism and a sleeve valve pipe inner cylinder installed inside the pretreatment dewatering mechanism;

[0008] The top of the pretreatment precipitation mechanism is equipped with a reinforcing support mechanism, and the outside of the reinforcing support mechanism is equipped with a reinforcing bending blade.

[0009] Also includes:

[0010] The pretreatment precipitation mechanism includes a sleeve valve tube outer cylinder, and a first drilled thread is fixedly installed on the outer side of the sleeve valve tube outer cylinder;

[0011] The sleeve valve tube outer cylinder has water inlet holes at equal intervals at the top and bottom, and a filter screen is fixed inside the water inlet holes.

[0012] Among them, the outer cylinder of the sleeve valve pipe has a grouting hole at the bottom near the water inlet, and the diameter of the grouting hole is larger than that of the water inlet.

[0013] Preferably, a telescopic sleeve is fixedly installed on the top and bottom of the outer cylinder of the sleeve valve tube near the grouting hole. A spring fixing plate is fixedly installed on one side of the inner side of the telescopic sleeve. A spring telescopic rod is fixedly installed on the outer side of the spring fixing plate. A connecting spring is fixedly installed on the outer side of the spring fixing plate near the spring telescopic rod. Telescopic sliding blocks are fixedly installed at the ends of the spring telescopic rod and the connecting spring.

[0014] Preferably, the telescopic sliding block is slidably connected to the telescopic sleeve, a telescopic connecting rod is fixedly installed on the side of the telescopic sliding block away from the connecting spring, the telescopic connecting rod is slidably connected to the telescopic sleeve, a grouting sealing block is fixedly installed at the end of the telescopic connecting rod, the grouting sealing block is fitted and connected to the grouting hole, and an injection hole is opened on the outer side of the bottom of the sleeve valve tube inner cylinder.

[0015] Preferably, a connecting protrusion is fixedly installed at the bottom center of the inner cylinder of the sleeve valve tube, and a top stop plug and a bottom stop plug are fixedly installed at the top and bottom of the inner cylinder of the sleeve valve tube near the injection hole, respectively. The top stop plug and the bottom stop plug are in close contact with the inner wall of the outer cylinder of the sleeve valve tube, and cleaning spiral blades are symmetrically installed between the top stop plug and the bottom stop plug.

[0016] Preferably, a water guide pipe and a vent pipe are fixedly installed on the inner sides of the top and bottom grout stoppers, respectively. A water pumping end is fixedly installed at the bottom of both the water guide pipe and the vent pipe. A water pumping hole is opened at the top of both the water guide pipe and the vent pipe near the top of the top grout stopper. A bottom fixing block is fixedly installed at the bottom of the sleeve valve tube outer cylinder. A connecting block is rotatably connected at the top center of the bottom fixing block. A connecting slot is opened on the top inner side of the connecting block. The connecting block is engaged with the connecting protrusion through the connecting slot.

[0017] Preferably, the bottom fixing block has an unfolding groove around its interior, the bottom of the connecting block is fixedly mounted with a top bevel gear, the top bevel gear is meshed with bottom bevel gears around its perimeter, one side of each of the four bottom bevel gears is fixedly mounted with an unfolding threaded rod, the outer side of the unfolding threaded rod is threadedly connected with an unfolding threaded sleeve, the bottom of the unfolding threaded sleeve is fixedly mounted with an unfolding fixing pin, the unfolding fixing pin is slidably connected to the bottom fixing block through the unfolding groove, the bottom of the bottom fixing block is fixedly mounted with a drilling bit, and the outer side of the drilling bit is fixedly mounted with a second drilling thread.

[0018] Preferably, the reinforcement support mechanism includes a mounting top plate, a first through hole is provided at the center of the mounting top plate, the mounting top plate is fixedly mounted on the top of the sleeve valve tube outer cylinder, a drilling coupling is fixedly mounted on the top outer side of the mounting top plate, a drilling connection groove is provided inside the drilling coupling, and a reinforcement rotating disk is rotatably connected to the bottom outer side of the mounting top plate.

[0019] Preferably, a second through hole is provided at the center of the interior of the reinforced rotating disk, and a reinforced rotating rod is rotatably connected to all four sides of the reinforced rotating disk near the second through hole. A reinforced sliding sleeve is rotatably connected to the bottom of the reinforced rotating rod, and a reinforced sliding rod is slidably connected inside the reinforced sliding sleeve. A reinforced spring is fixedly installed on one side of the reinforced sliding sleeve, and a reinforced sliding disk is fixedly installed on the outer side of both the reinforced sliding rod and the reinforced spring.

[0020] Preferably, a third through groove is provided at the center of the interior of the reinforced sliding disc, a reinforced bending blade is fixedly installed at the bottom of the reinforced sliding sleeve, a reinforced tip is fixedly installed at the end of the reinforced bending blade, and a vertical soil-breaking blade is provided on the outer side of the reinforced bending blade.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: This contaminated coal mine sleeve valve grouting device monitors the soil moisture content before grouting, then reinforces the area with the highest moisture content. Drilling is performed using the second drilling thread on the outside of the drill bit and the first drilling thread on the outside of the sleeve valve tube, directly inserting the sleeve valve tube into the soil. This eliminates the need for separate insertion of the sleeve valve tube, preventing damage to the borehole wall when the drill bit is pulled out or the sleeve valve tube is inserted in soft soil, which could lead to borehole collapse and reduce the subsequent grouting effect. Water is also supplied to the soil through the water delivery holes inside the sleeve valve tube. This system allows pore water from the soil to enter the outer cylinder of the sleeve valve tube through the water inlet. An external water pump connected to the water pipe, along with the vent pipe, pumping end, and pumping hole, balances the pressure inside and outside the outer cylinder of the sleeve valve tube, facilitating the raising and lowering of the inner cylinder for layered grouting. Simultaneously, the raising and lowering of the inner cylinder allows the collected pore water to be discharged, reducing soil moisture content. The vertical soil-breaking blade on the outside of the reinforced bending blade breaks up the soil, while the reinforcing tip is inserted into the soil to further reinforce the entire device, thus improving the stability of the sleeve valve tube grouting. The specific details are as follows:

[0022] 1. By setting up a pre-treatment precipitation mechanism, the soil moisture content can be monitored before grouting, and grouting reinforcement can be carried out on the area with the highest moisture content. Drilling operations are performed using the second drilling thread on the outside of the drill bit and the first drilling thread on the outside of the sleeve valve tube. The sleeve valve tube is directly drilled into the soil without the need for separate insertion. This avoids damage to the inner wall of the borehole when the drill bit is pulled out or the sleeve valve tube is inserted in soft soil, which could lead to borehole collapse and reduce the subsequent grouting effect. Shell material can be injected when the sleeve valve tube is drilled into the soil. After injection, water is supplied to the soil through the water inlet inside the outer cylinder of the sleeve valve tube. Pore water in the soil enters the inner cylinder of the sleeve valve tube through the water inlet. An external water pump connected to the water pipe, along with the vent pipe, pumping end, and pumping hole, balances the pressure inside and outside the outer cylinder of the sleeve valve tube, facilitating the raising and lowering of the inner cylinder to achieve layered grouting. Simultaneously, the raising and lowering of the inner cylinder allows the collected pore water to be discharged, thus reducing the soil moisture content. After reducing the soil moisture content, the injection hole at the end of the inner cylinder of the sleeve valve tube is moved to the injection port. At the grouting hole, top and bottom grout stop plugs are used to seal the grouting area, thereby increasing the grouting pressure and improving the grouting effect. Under the action of grouting pressure, the grouting sealing block can be pushed open, and the soil interior can be squeezed to a certain extent, allowing pore water to enter the inner cylinder of the sleeve valve pipe through the water delivery hole. By continuously extracting the pore water, the soil grouting effect is improved. When the extracted water contains a large amount of grout, it indicates that the grouting of this area is complete, and the injection hole can be moved to grouting holes at different heights in a timely manner, thereby achieving layered grouting, saving grouting materials, and improving efficiency. The high grouting effect is achieved by rotating the bottom fixed block to drive the top grout stop plug, the bottom grout stop plug, and the cleaning spiral blade. The cleaning spiral blade can clean the inner wall of the sleeve valve tube outer cylinder, improving the grouting effect of the sleeve valve tube outer cylinder. Before grouting, the sleeve valve tube inner cylinder is rotated by rotating the connecting protrusion and the connecting slot at the top of the connecting card block. This causes the sleeve valve tube inner cylinder to drive the connecting protrusion and the connecting card block to rotate. At the same time, the top bevel gear drives the bottom bevel gear and the unfolding threaded rod to rotate, causing the unfolding threaded sleeve to drive the unfolding fixed nail to move relative to each other. The unfolding fixed nail is then inserted into the soil, thereby improving the stability of the sleeve valve tube grouting.

[0023] 2. By setting up a reinforcement support mechanism, it is possible to connect the drilling equipment with the drilling coupling on the top of the mounting plate, thereby drilling and grouting the soil through the outer cylinder of the sleeve valve pipe and the drilling bit, reducing grouting steps and improving grouting efficiency. At the same time, by utilizing the rotating connection between the mounting plate and the second through hole, the reinforcement sliding disc does not rotate when the outer cylinder of the sleeve valve pipe rotates. When the reinforcement sliding disc contacts the top of the soil, under the action of pressure, the reinforcement sliding disc moves upward. Under the action of the reinforcement rotating rod, the reinforcement sliding sleeve can slide relative to the outside of the reinforcement sliding rod, while driving the reinforcement bending blade to move relative to the outside. The vertical soil-breaking blade on the outside of the reinforcement bending blade breaks the soil, and the reinforcement tip is inserted into the soil to further reinforce the entire device, thereby improving the stability of the sleeve valve pipe grouting. Attached Figure Description

[0024] Figure 1 is a schematic diagram of the overall three-dimensional structure of this utility model;

[0025] Figure 2 is a three-dimensional structural schematic diagram of the pretreatment precipitation mechanism in this utility model;

[0026] Figure 3 is a schematic diagram of the three-dimensional planar structure of the outer cylinder of the sleeve valve tube of this utility model;

[0027] Figure 4 is a schematic diagram of the three-dimensional planar structure of the telescopic sleeve in this utility model;

[0028] Figure 5 is a three-dimensional structural diagram of the inner cylinder of the sleeve valve tube of this utility model;

[0029] Figure 6 is an enlarged structural schematic diagram of region A in Figure 5 of this utility model;

[0030] Figure 7 is a three-dimensional structural diagram of the bottom fixing block in this utility model;

[0031] Figure 8 is a three-dimensional structural diagram of the unfolded fixing nail in this utility model;

[0032] Figure 9 is a three-dimensional structural diagram of the reinforcement support mechanism in this utility model;

[0033] Figure 10 is a three-dimensional structural diagram of the drilled coupling in this utility model;

[0034] Figure 11 is a schematic diagram of the three-dimensional planar structure of the reinforced sliding disk in this utility model.

[0035] In the diagram: 1. Pre-treatment precipitation mechanism; 101. Outer cylinder of sleeve valve pipe; 102. First drilled hole thread; 103. Water delivery hole; 104. Grouting hole; 105. Telescopic sleeve; 106. Spring fixing plate; 107. Spring telescopic rod; 108. Connecting spring; 109. Telescopic sliding block; 110. Telescopic connecting rod; 111. Grouting sealing block; 112. Inner cylinder of sleeve valve pipe; 113. Injection hole; 114. Connecting protrusion; 115. Top grout stop plug; 116. Bottom grout stop plug; 117. Cleaning spiral blade; 118. Water guide pipe; 119. Vent pipe; 120. Pumping end; 121. Pumping hole; 122. Bottom fixing block; 123. Connecting clip; 124. Connecting clip 125. Groove; 126. Top bevel gear; 127. Bottom bevel gear; 128. Threaded rod; 129. Threaded sleeve; 130. Fixing pin; 131. Drill bit; 132. Second drill thread; 2. Reinforced support mechanism; 201. Mounting top plate; 202. First through hole; 203. Drill coupling; 204. Drill connecting groove; 205. Reinforced rotating disk; 206. Second through hole; 207. Reinforced rotating rod; 208. Reinforced sliding sleeve; 209. Reinforced sliding rod; 210. Reinforced spring; 211. Reinforced sliding disk; 212. Third through groove; 213. Reinforced bending blade; 214. Reinforced tip; 215. Vertical soil breaking blade. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Please refer to Figures 1-6 and 11. This utility model provides the following technical solution: a grouting device for a sleeve valve pipe in a contaminated coal mine, comprising a pretreatment dewatering mechanism 1 and an inner sleeve valve pipe cylinder 112 installed inside the pretreatment dewatering mechanism 1. A reinforcing support mechanism 2 is provided at the top of the pretreatment dewatering mechanism 1, and a reinforcing bending blade 213 is provided on the outer side of the reinforcing support mechanism 2. The pretreatment dewatering mechanism 1 includes an outer sleeve valve pipe cylinder 101, with a first drilled thread 102 fixedly installed on the outer side of the outer sleeve valve pipe cylinder 101. Water delivery holes 103 are equidistantly spaced at the top and bottom of the outer sleeve valve pipe cylinder 101, and a filter screen is fixed inside each water delivery hole 103. A grouting hole 104 is provided at the bottom of the outer sleeve valve pipe cylinder 101 near the water delivery hole 103. The aperture of hole 104 is larger than that of water inlet 103. Telescopic sleeves 105 are fixedly installed at the top and bottom of the outer sleeve 101 near the grouting hole 104. A spring fixing plate 106 is fixedly installed on one side of the inner side of the telescopic sleeve 105. A spring telescopic rod 107 is fixedly installed on the outer side of the spring fixing plate 106. A connecting spring 108 is fixedly installed on the outer side of the spring fixing plate 106 near the spring telescopic rod 107. Telescopic sliding blocks 109 are fixedly installed at the ends of both the spring telescopic rod 107 and the connecting spring 108. The telescopic sliding blocks 109 are slidably connected to the telescopic sleeve 105. A telescopic connecting rod 110 is fixedly installed on the side of the telescopic sliding block 109 away from the connecting spring 108. The telescopic connecting rod 110 is slidably connected to the telescopic sleeve 105. A grouting sealing block 111 is fixedly installed at the end of the telescopic connecting rod 110. The grouting sealing block 111 is fitted and connected to the grouting hole 104. An injection hole 113 is opened on the outer side of the bottom of the inner cylinder 112 of the sleeve valve tube. A connecting protrusion 114 is fixedly installed at the center of the bottom of the inner cylinder 112 of the sleeve valve tube. A top grout stop plug 115 and a bottom grout stop plug 116 are fixedly installed at the top and bottom of the inner cylinder 112 near the injection hole 113, respectively. The top grout stop plug 115 and the bottom grout stop plug 116 are fitted and connected to the inner wall of the outer cylinder 101 of the sleeve valve tube. A cleaning spiral blade 117 is symmetrically installed between the top grout stop plug 115 and the bottom grout stop plug 116. A water guide pipe 118 and a water guide pipe 117 are fixedly installed on the inner sides of the top grout stop plug 115 and the bottom grout stop plug 116, respectively. A pumping end 120 is fixedly installed at the bottom of the vent pipe 119, the water guide pipe 118, and the vent pipe 119. During soil grouting, the soil moisture content is monitored first, and then grouting is performed on the area with the highest moisture content. Drilling is carried out using the second drilling thread 132 on the outside of the drill bit 131 and the first drilling thread 102 on the outside of the sleeve valve tube outer cylinder 101. The sleeve valve tube outer cylinder 101 is directly drilled into the soil without the need for separate insertion of the sleeve valve tube. This avoids damage to the inner wall of the hole when the drill bit is pulled out or the sleeve valve tube is inserted in soft soil, which could lead to hole collapse and reduce the subsequent grouting effect. When the sleeve valve tube outer cylinder 101 is drilled into the soil, casing material can be injected. After injection...Soil water is supplied through the water inlet 103 inside the outer sleeve of the sleeve valve pipe 101, allowing pore water in the soil to enter the interior of the outer sleeve valve pipe 101. An external water pump connected to the water pipe 118, along with the vent pipe 119, the pumping end 120, and the pumping hole 121, balances the pressure inside and outside the outer sleeve valve pipe 101, facilitating the lifting and lowering of the inner sleeve valve pipe 112, thereby achieving the purpose of layered grouting.

[0038] Please refer to Figures 3-8. Both the water guide pipe 118 and the vent pipe 119 have water extraction holes 121 near the top of the top grout stop plug 115. A bottom fixing block 122 is fixedly installed at the bottom of the sleeve valve pipe outer cylinder 101. A connecting block 123 is rotatably connected to the top center of the bottom fixing block 122. A connecting groove 124 is provided on the inner side of the top of the connecting block 123. The connecting block 123 engages with the connecting protrusion 114 through the connecting groove 124. An unfolding groove 125 is provided around the inside of the bottom fixing block 122. A top bevel gear 126 is fixedly installed at the bottom of the connecting block 123. Bottom bevel gears 127 are meshed around the top bevel gear 126. One side of each of the four bottom bevel gears 127... All are fixedly installed with unfolding threaded rods 128. An unfolding threaded sleeve 129 is threadedly connected to the outer side of the unfolding threaded rod 128. An unfolding fixing pin 130 is fixedly installed at the bottom of the unfolding threaded sleeve 129. The unfolding fixing pin 130 is slidably connected to the bottom fixing block 122 via an unfolding slide groove 125. A drilling bit 131 is fixedly installed at the bottom of the bottom fixing block 122. A second drilling thread 132 is fixedly installed on the outer side of the drilling bit 131. By moving the inner cylinder 112 of the sleeve valve tube up and down, the collected pore water can be discharged, thereby reducing the soil moisture content. After reducing the soil moisture content, the injection hole 113 at the end of the inner cylinder 112 of the sleeve valve tube is moved to the grouting hole 104, and the top grout stop plug is used. 115 and the bottom grout stopper 116 seal the grouting area, thereby increasing the grouting pressure and improving the grouting effect. Under the action of the grouting pressure, the grouting sealing block 111 can be pushed open, and at the same time, the soil interior can be squeezed to a certain extent, allowing pore water to enter the interior of the sleeve valve pipe outer cylinder 101 through the water delivery hole 103. By continuously extracting the pore water, the soil grouting effect is improved. When the extracted water contains a large amount of grouting liquid, it indicates that the grouting of this area has been completed, and the injection hole 113 can be moved to the grouting hole 104 at different heights in a timely manner, thereby realizing layered grouting, saving grouting materials while improving the grouting effect. The top grout stopper is driven by rotating the bottom fixing block 122. The rotation of plug 115, bottom grout stop plug 116, and cleaning spiral blade 117 can clean the inner wall of the sleeve valve tube outer cylinder 101 using the cleaning spiral blade 117, improving the grouting effect of the sleeve valve tube outer cylinder 101. Before grouting, the sleeve valve tube inner cylinder 112 is rotated by utilizing the engagement feature of the connecting protrusion 114 and the top connecting groove 124 of the connecting block 123. This causes the sleeve valve tube inner cylinder 112 to drive the connecting protrusion 114 and the connecting block 123 to rotate. At the same time, the top bevel gear 126 drives the bottom bevel gear 127 and the unfolding threaded rod 128 to rotate, causing the unfolding threaded sleeve 129 to drive the unfolding fixing nail 130 to move relative to each other, inserting the unfolding fixing nail 130 into the soil, thereby improving the stability of the sleeve valve tube grouting.

[0039] Please refer to Figures 1 and 9-11. The reinforcing support mechanism 2 includes a mounting top plate 201. A first through hole 202 is formed at the center of the mounting top plate 201. The mounting top plate 201 is fixedly mounted on the top of the sleeve valve tube outer cylinder 101. A drilled coupling 203 is fixedly mounted on the top outer side of the mounting top plate 201. A drilled connecting groove 204 is formed inside the drilled coupling 203. A reinforcing rotating disk 205 is rotatably connected to the bottom outer side of the mounting top plate 201. A second through hole 206 is formed at the center of the reinforcing rotating disk 205. A reinforcing rotating disk 205 is rotatably connected to a reinforcing rotating rod 207 around its perimeter near the second through hole 206. A reinforcing sliding sleeve 208 is rotatably connected to the bottom of the reinforcing rotating rod 207. A reinforcing sliding rod 209 is slidably connected inside the reinforcing sliding sleeve 208. A reinforcing spring 210 is fixedly installed on one side of the reinforcing sliding sleeve 208. A reinforcing sliding disk 211 is fixedly installed on the outer sides of both the reinforcing sliding rod 209 and the reinforcing spring 210. A third through groove 212 is formed at the center of the interior of the reinforcing sliding disk 211. A reinforcing bending blade 213 is fixedly installed at the bottom, and a reinforcing tip 214 is fixedly installed at the end of the reinforcing bending blade 213. A vertical soil-breaking blade 215 is opened on the outer side of the reinforcing bending blade 213. It is connected to the drilling equipment through the drilling coupling 203 on the top of the mounting plate 201, so as to perform soil drilling and grouting through the sleeve valve pipe outer cylinder 101 and the drilling bit 131, reducing the grouting process and improving the grouting efficiency. At the same time, taking advantage of the rotatable connection between the mounting plate 201 and the second through hole 206, the reinforcing sliding is strengthened when the sleeve valve pipe outer cylinder 101 rotates. The moving disc 211 does not rotate. When the reinforcing sliding disc 211 contacts the top of the soil, it moves upward under pressure. Under the action of the reinforcing rotating rod 207, the reinforcing sliding sleeve 208 slides relative to the outside of the reinforcing sliding rod 209, while driving the reinforcing bending blade 213 to move relative to the outside. The vertical soil-breaking blade 215 on the outside of the reinforcing bending blade 213 breaks the soil, and the reinforcing tip 214 is inserted into the soil to further reinforce the entire device, thereby improving the stability of the sleeve valve pipe grouting.

[0040] Working Principle: Before using this type of contaminated coal mine sleeve valve pipe grouting device, it is necessary to check the overall condition of the device to ensure normal operation. As shown in Figures 1-11, firstly, the drilling coupling 203 on the top of the mounting plate 201 is used to connect with the drilling equipment, thereby drilling and grouting the soil through the sleeve valve pipe outer cylinder 101 and the drilling bit 131, reducing grouting steps and improving grouting efficiency. At the same time, taking advantage of the rotatable connection between the mounting plate 201 and the second through hole 206, the sleeve valve pipe outer cylinder 101 is reinforced and slid when rotating. The moving disc 211 does not rotate. When the reinforcing sliding disc 211 contacts the top of the soil, it moves upward under pressure. Under the action of the reinforcing rotating rod 207, the reinforcing sliding sleeve 208 slides relative to the outside of the reinforcing sliding rod 209, while driving the reinforcing bending blade 213 to move relative to the outside. The vertical soil-breaking blade 215 on the outside of the reinforcing bending blade 213 breaks the soil, and the reinforcing tip 214 is inserted into the soil to further reinforce the entire device, thereby improving the stability of the sleeve valve pipe grouting.

[0041] Secondly, during soil grouting, the soil moisture content is monitored first, and then grouting is carried out on the area with the highest moisture content. Drilling is performed using the second drilling thread 132 on the outside of the drill bit 131 and the first drilling thread 102 on the outside of the sleeve valve tube outer cylinder 101. The sleeve valve tube outer cylinder 101 is directly drilled into the soil without the need for separate insertion of the sleeve valve tube. This avoids damage to the inner wall of the hole when the drill bit is pulled out or the sleeve valve tube is inserted in soft soil, which could lead to hole collapse and reduce the subsequent grouting effect. When the sleeve valve tube outer cylinder 101 is drilled into the soil, casing material can be injected. After injection, water is transported to the soil through the water inlet 103 inside the sleeve valve tube outer cylinder 101, allowing pore water in the soil to pass through. Water hole 103 enters the interior of sleeve valve tube outer cylinder 101. It is connected to water pipe 118 via an external water pump. Under the action of vent pipe 119, water pumping end 120 and water pumping hole 121, it can not only balance the pressure inside and outside of sleeve valve tube outer cylinder 101, but also facilitate the lifting and lowering of sleeve valve tube inner cylinder 112 to achieve the purpose of layered grouting. At the same time, the lifting and lowering of sleeve valve tube inner cylinder 112 can discharge the collected pore water, thereby reducing the soil moisture content. After reducing the soil moisture content, the injection hole 113 at the end of sleeve valve tube inner cylinder 112 is moved to grouting hole 104. The grouting area is sealed by top grout stop plug 115 and bottom grout stop plug 116, thereby increasing the grouting pressure and improving the grouting effect.

[0042] Finally, under the action of grouting pressure, the grouting sealing block 111 can be pushed open, and at the same time, the soil interior can be squeezed to a certain extent, allowing pore water to enter the interior of the sleeve valve pipe outer cylinder 101 through the water delivery hole 103. By continuously extracting the pore water, the soil grouting effect is improved. When the extracted water contains a large amount of grouting liquid, it indicates that the grouting of this area has been completed. The injection hole 113 can be moved to the grouting hole 104 at different heights in a timely manner, thereby realizing layered grouting, saving grouting materials and improving the grouting effect. By rotating the bottom fixing block 122, the top grout stop plug 115, the bottom grout stop plug 116 and the cleaning spiral are driven. Rotating the blade 117 allows for cleaning of the inner wall of the sleeve valve tube outer cylinder 101, improving the grouting effect. Before grouting, the sleeve valve tube inner cylinder 112 is rotated by utilizing the engagement feature of the connecting protrusion 114 and the connecting slot 124 at the top of the connecting block 123. This causes the sleeve valve tube inner cylinder 112 to rotate, driving the connecting protrusion 114 and the connecting block 123 to rotate. Simultaneously, the top bevel gear 126 drives the bottom bevel gear 127 and the unfolding threaded rod 128 to rotate, causing the unfolding threaded sleeve 129 to move relative to the unfolding fixing nail 130, inserting the unfolding fixing nail 130 into the soil, thereby improving the stability of the sleeve valve tube grouting.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A grouting device for a sleeve valve pipe in a contaminated coal mine, comprising a pretreatment dewatering mechanism (1) and a sleeve valve pipe inner cylinder (112) installed inside the pretreatment dewatering mechanism (1); a reinforcing support mechanism (2) is provided on the top of the pretreatment dewatering mechanism (1), and a reinforcing bending blade (213) is provided on the outside of the reinforcing support mechanism (2); characterized in that, Also includes: The pretreatment precipitation mechanism (1) includes a sleeve valve tube outer cylinder (101), and a first drilled thread (102) is fixedly installed on the outer side of the sleeve valve tube outer cylinder (101); wherein, water delivery holes (103) are equally spaced at the top and bottom of the sleeve valve tube outer cylinder (101), and a filter screen is fixed inside the water delivery hole (103); wherein, a grouting hole (104) is opened at the bottom of the sleeve valve tube outer cylinder (101) near the water delivery hole (103), and the diameter of the grouting hole (104) is larger than that of the water delivery hole (103).

2. The grouting device for a sleeve valve pipe in a contaminated coal mine according to claim 1, characterized in that: The sleeve valve tube outer cylinder (101) is fixedly installed with a telescopic sleeve (105) at the top and bottom near the grouting hole (104). A spring fixing plate (106) is fixedly installed on one side inside the telescopic sleeve (105). A spring telescopic rod (107) is fixedly installed on the outside of the spring fixing plate (106). A connecting spring (108) is fixedly installed on the outside of the spring fixing plate (106) near the spring telescopic rod (107). Telescopic sliding blocks (109) are fixedly installed at the ends of the spring telescopic rod (107) and the connecting spring (108).

3. The grouting device for a sleeve valve pipe in a contaminated coal mine according to claim 2, characterized in that: The telescopic sliding block (109) is slidably connected to the telescopic sleeve (105). A telescopic connecting rod (110) is fixedly installed on the side of the telescopic sliding block (109) away from the connecting spring (108). The telescopic connecting rod (110) is slidably connected to the telescopic sleeve (105). A grouting sealing block (111) is fixedly installed at the end of the telescopic connecting rod (110). The grouting sealing block (111) is fitted and connected to the grouting hole (104). An injection hole (113) is opened on the outer side of the bottom of the sleeve valve tube inner cylinder (112).

4. A grouting device for a sleeve valve pipe in a contaminated coal mine according to claim 3, characterized in that: A connecting protrusion (114) is fixedly installed at the bottom center of the inner cylinder (112) of the sleeve valve tube. A top stop plug (115) and a bottom stop plug (116) are fixedly installed at the top and bottom of the inner cylinder (112) near the injection hole (113), respectively. The top stop plug (115) and the bottom stop plug (116) are in close contact with the inner wall of the outer cylinder (101) of the sleeve valve tube. A cleaning spiral blade (117) is symmetrically installed between the top stop plug (115) and the bottom stop plug (116).

5. A grouting device for a sleeve valve pipe in a contaminated coal mine according to claim 4, characterized in that: Water guide pipe (118) and air vent pipe (119) are fixedly installed on the inner sides of the top grout stop plug (115) and the bottom grout stop plug (116), respectively. A water pumping end (120) is fixedly installed at the bottom of the water guide pipe (118) and the air vent pipe (119). A water pumping hole (121) is opened on the top of the water guide pipe (118) and the air vent pipe (119) near the top of the top grout stop plug (115). A bottom fixing block (122) is fixedly installed at the bottom of the sleeve valve tube outer cylinder (101). A connecting block (123) is rotatably connected to the top center position of the bottom fixing block (122). A connecting slot (124) is opened on the inner side of the top of the connecting block (123). The connecting block (123) is engaged with the connecting protrusion (114) through the connecting slot (124).

6. A grouting device for a sleeve valve pipe in a contaminated coal mine according to claim 5, characterized in that: The bottom fixing block (122) has an unfolding groove (125) around its interior. The bottom of the connecting block (123) is fixedly installed with a top bevel gear (126). The top bevel gear (126) is meshed with bottom bevel gears (127) around its perimeter. An unfolding threaded rod (128) is fixedly installed on one side of each of the four bottom bevel gears (127). An unfolding threaded sleeve (129) is threadedly connected to the outer side of the unfolding threaded rod (128). An unfolding fixing nail (130) is fixedly installed at the bottom of the unfolding threaded sleeve (129). The unfolding fixing nail (130) is slidably connected to the bottom fixing block (122) through the unfolding groove (125). A drilling bit (131) is fixedly installed at the bottom of the bottom fixing block (122). A second drilling thread (132) is fixedly installed on the outer side of the drilling bit (131).

7. A grouting device for a sleeve valve pipe in a contaminated coal mine according to claim 1, characterized in that: The reinforcement support mechanism (2) includes a mounting top plate (201), a first through hole (202) is provided at the center of the mounting top plate (201), the mounting top plate (201) is fixedly installed on the top of the sleeve valve tube outer cylinder (101), a drilling coupling (203) is fixedly installed on the top outer side of the mounting top plate (201), a drilling connection groove (204) is provided inside the drilling coupling (203), and a reinforcement rotating disk (205) is rotatably connected to the bottom outer side of the mounting top plate (201).

8. A grouting device for a sleeve valve pipe in a contaminated coal mine according to claim 7, characterized in that: The reinforced rotating disk (205) has a second through hole (206) at its center. Reinforced rotating rods (207) are rotatably connected around the reinforced rotating disk (205) near the second through hole (206). A reinforced sliding sleeve (208) is rotatably connected to the bottom of the reinforced rotating rod (207). A reinforced sliding rod (209) is slidably connected inside the reinforced sliding sleeve (208). A reinforced spring (210) is fixedly installed on one side of the reinforced sliding sleeve (208). A reinforced sliding disk (211) is fixedly installed on the outer side of both the reinforced sliding rod (209) and the reinforced spring (210).

9. A grouting device for a sleeve valve pipe in a contaminated coal mine according to claim 8, characterized in that: The reinforcing sliding disc (211) has a third through groove (212) at its internal center. The bottom of the reinforcing sliding sleeve (208) is fixedly installed with a reinforcing bending blade (213). The end of the reinforcing bending blade (213) is fixedly installed with a reinforcing tip (214). The outside of the reinforcing bending blade (213) is provided with a vertical soil-breaking blade (215).

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