A dam-building filling device for solidifying waste rock pile and a dam-building method

Abstract

The present invention discloses a dam filling device for solidifying a gangue pile, comprising a support frame, a filling bin fixedly installed on the top of the support frame, a telescopic injection pipe fixedly installed on the top of the filling bin, a pressure plate fixedly installed on the bottom of the telescopic injection pipe, a linkage rod fixedly installed on the top of the pressure plate, a piston head fixedly installed on the bottom of the linkage rod, a piston cylinder fixedly sleeved on the outside of the filling bin, a movable gear fixedly installed on the bottom of the piston head, an acceleration gear movably connected on the outside of the filling bin, and a limited support plate fixedly installed on the outside of the filling bin, so that the coolant in the inner cavity of the cooling bin can circulate to the inner cavity of the heat absorbing pipe, thereby realizing cooling of the material through the heat absorbing pipe, avoiding the material from becoming unstable due to high temperature during the filling process. The present invention also discloses a dam building method for solidifying a gangue pile, and the gangue stockpile yard formed has the advantages of being solid and safe, and greatly avoids the problem of large safety hazards in traditional gangue stacking.

Description

Technical Field

[0001] The invention belongs to the technical field of dam-building filling devices, and in particular relates to a dam-building filling device for solidified gangue piles and a dam-building method. Background Art

[0002] Gangue is a stone mixed in the coal mine. As the coal mine is mined, gangue will also be mined. After being mined, gangue is often piled up. However, due to the characteristics of gangue itself, it will generate heat when it comes into contact with water or air. When there is a lot of heated gangue, it may cause spontaneous combustion. In addition, the gangue pile is too loose, causing the bottom of the gangue pile to come into contact with a large amount of air. If the bottom spontaneously combusts, it will be difficult to extinguish the fire and it is easy to cause collapse accidents, posing a major safety hazard. Summary of the invention

[0003] The first object of the present invention is to provide a dam filling device for solidifying a waste rock pile to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dam-building filling device for solidifying a gangue pile, comprising a support frame, a filling bin is fixedly installed on the top of the support frame, a telescopic injection pipe is fixedly installed on the top of the filling bin, a pressure plate is fixedly installed on the bottom end of the telescopic injection pipe, a linkage rod is fixedly installed on the top of the pressure plate, a piston head is fixedly installed on the bottom end of the linkage rod, a piston cylinder is fixedly sleeved on the outer side of the filling bin, a movable gear is fixedly installed on the bottom end of the piston head, an acceleration gear is movably connected to the outer side of the filling bin, a limiting support plate is fixedly installed on the outer side of the filling bin, a conveying roller is movably connected to the inner cavity of the limiting support plate, a transmission gear is fixedly installed on the side of the conveying roller away from the filling bin, a heat absorption pipe is fixedly installed on the inner cavity of the filling bin, a movable hose is fixedly installed on the middle part of the heat absorption pipe, a cooling bin is fixedly installed on the outer side of the filling bin, and a heat sink is fixedly sleeved on the side of the cooling bin away from the filling bin.

[0005] Preferably, the bottom end of the piston cylinder is fixedly connected to a connecting tube, the top of the connecting tube is fixedly installed with a resistance airbag, the top of the filling bin is fixedly installed with a blocking bin, the inner cavity of the blocking bin is provided with a fixing plate, and the top of the blocking bin is provided with a control valve.

[0006] Preferably, a servo motor is fixedly mounted on the top of the filling bin, and a stirring rod is fixedly sleeved on the output shaft of the servo motor, and the stirring rod is located below the pressing plate.

[0007] Preferably, a fixing ring is fixedly installed on the outer side of the stuffing bin, the piston cylinder is fixedly sleeved in the inner cavity of the fixing ring, the bottom end of the stuffing bin is fixedly connected to a delivery pump, and the output end of the delivery pump is fixedly sleeved with a stuffing pipe.

[0008] Preferably, the acceleration gear consists of a large gear and a small gear, the large gear is meshed with the transmission gear, and the small gear is meshed with the movable gear.

[0009] Preferably, the heat absorption tube is S-shaped, located at the bottom of the inner cavity of the filling bin, the heat absorption tube is connected with the inner cavity of the cooling bin, the movable hose is located in the inner cavity of the limiting support plate and is squeezed by the conveying roller, a circular hole is opened at the bottom end of the piston cylinder, and the piston head and the movable gear are fixedly connected by a round rod passing through the circular hole.

[0010] Preferably, there are two fixing plates, which are respectively located on the left and right sides of the inner cavity of the blocking chamber. The fixing plates support the resistance airbag, and the bottom of the inner cavity of the piston cylinder is connected with the inner cavity of the resistance airbag through a connecting tube.

[0011] Preferably, the bottom end of the linkage rod is a telescopic rod, the telescopic rod is fixedly connected to the pressure plate, and the heat sink is located in the inner cavity of the cooling chamber.

[0012] Preferably, the separated gangue is partially crushed and ground, water is added to mix it into a slurry, which is loaded into a filling device, a curing agent is added, and the gangue slurry is used as a filling material to build a dam, so that the internal gangue pile is isolated from the outside, and a batch of uncrushed gangue is poured outside the gangue slurry, and then the gangue slurry is used to build a dam outside the gangue pile, and so on. After the site is closed, grouting is performed once above the gangue pile;

[0013] When adding curing agent, first input the material from the telescopic injection tube into the inner cavity of the filling bin and locate it at the bottom of the pressure plate. At this time, the material squeezes the pressure plate so that the pressure plate can rise, and the pressure plate drives the linkage rod to move, and the linkage rod drives the piston head in the inner cavity of the piston cylinder to move, and the piston head extracts the air at the bottom of the inner cavity of the piston cylinder, and the extracted air is discharged from the resistance airbag and enters the inner cavity of the piston cylinder along the transmission gear, thereby changing the volume of the resistance airbag. When the material is added, there is less material in the inner cavity of the filling bin, the distance moved by the piston head is shorter, and the volume of the resistance airbag is larger. When there is more material in the inner cavity of the filling bin, the distance moved by the piston head is longer, and the volume of the resistance airbag is smaller. At this time, the control valve is started to input the curing agent into the inner cavity of the blocking bin, and the curing agent is blocked by the resistance airbag. When the volume of the resistance airbag is different, the amount of curing agent entering the inner cavity of the filling bin in the same time is also different.

[0014] The coolant in the inner cavity of the stuffing tube cools down the material in the inner cavity of the stuffing bin. When the pressure plate moves, it drives the piston head to move, and the piston head drives the movable gear to move. The movable gear meshes with the acceleration gear, thereby driving the transmission gear to rotate. When the transmission gear rotates, it drives the stuffing tube to squeeze the coolant in the inner cavity of the servo motor and the stuffing tube. The negative pressure in the inner cavity of the servo motor causes the coolant in the inner cavity of the stuffing tube and the stirring rod to circulate, and the coolant is dissipated through the fixed ring.

[0015] Then, the servo motor is started to drive the stirring rod to rotate and stir the material and the curing agent to make them fully mixed. When the mixing is completed, the filling pipe is started to extract the material from the inner cavity of the filling bin and fill it through the filling pipe.

[0016] The specific steps of forming a waste rock dump are:

[0017] Step 1, installing the filling device outside the set gangue stockpile;

[0018] Step 2, pouring a batch of mined and separated gangue around the stockpile to form a gangue wall;

[0019] Step 3, crushing and grinding a part of the mined gangue, then adding water to mix into a slurry, then loading it into a filling device, adding a curing agent, and preparing a slurry with a concentration of less than 1 kg / l of solidified matter; wherein, the weight ratio of the slurry gangue: slurry curing agent is 10:1;

[0020] Step 4, injecting the slurry prepared in step 3 into the waste rock wall formed in step 2 through a filling pipe, and filling the slurry into the gaps in the waste rock wall. The height of the waste rock wall and the particle size of the waste rock are controlled so that the slurry can fully penetrate from the upper part of the waste rock wall to the bottom of the waste rock wall to form a waste rock dam;

[0021] Step 5, repeating the above steps 2-4 on the upper part of the waste rock dam formed in step 4 to form a waste rock dam of a desired height;

[0022] Step 6, pouring a batch of mined and separated gangue into the gangue dump surrounded by the gangue dam, passing the slurry prepared in step 3 through the filling pipe to the upper part of the gangue in the gangue dump, filling the dam, and filling the slurry into the gaps in the gangue pile. After solidification, a solidified layer is also formed on the upper part of the gangue pile, isolating the internal gangue pile from the outside, and forming a dense gangue stockpile base;

[0023] Step 7, repeating the processes of steps 5 and 6 in sequence on the upper part of the dense waste rock stockpile base formed in step 6, after cumulative solidification layer by layer, each layer of waste rock stockpile base retreats relative to the next layer of waste rock stockpile base, forming a trapezoidal structure and dense waste rock stockpile base.

[0024] Step 8: Lay the slope greening base layer on the upper part of the base and the slope of the gangue stockpile yard to build a green gangue stockpile yard.

[0025] Preferably, in step 7, a water storage pond is reserved or artificially created on the upper part of the uppermost waste rock stockpile base, or other exposed parts of the waste rock stockpile base, as a source of water for land irrigation, collecting rainwater or well water for irrigation or spraying for dust removal.

[0026] It should be noted that this plan is also applicable to the treatment of other solid wastes.

[0027] The beneficial effects of the present invention are as follows:

[0028] 1. The present invention blocks the waste rock pile and builds a dam through slurry, so as to achieve better greening. Since the waste rock pile is isolated from the external air, no dust is generated and the safety is improved. The mud material is transported to the inner cavity of the filling bin through the telescopic injection pipe and is located at the bottom of the pressure plate. At this time, the pressure plate is squeezed by the mud to drive the pressure plate to rise. When the pressure plate rises, it drives the linkage rod to drive the piston head to rise, thereby driving the movable gear to move. When the movable gear moves, it drives the acceleration gear meshing with it to rotate, and then drives the transmission gear to rotate, so that the transmission gear rotates to squeeze the movable hose, so that the coolant in the inner cavity of the heat absorption tube circulates, and the heat absorption tube, the movable hose, and the cooling bin are in a sealed state, so that the coolant in the inner cavity of the cooling bin can circulate to the inner cavity of the heat absorption tube, thereby realizing the cooling of the material through the heat absorption tube, avoiding the instability of the material due to the high temperature during the filling process.

[0029] 2. The present invention drives the piston head to move in the inner cavity of the piston cylinder through the linkage rod, and the air in the inner cavity of the piston cylinder is extracted. The extracted air is discharged from the resistance airbag and enters the bottom end of the piston cylinder along the connecting pipe. When the feeding is completed, the control valve is started and the opening time is fixed, so that the curing agent enters from the blocking bin. When the material in the inner cavity of the filling bin and the bottom end of the pressure plate is less, the air extracted from the resistance airbag is relatively small, and the volume of the resistance airbag is larger, so that the blocking area of ​​the curing agent is relatively large, and then the amount of curing agent entering the inner cavity of the filling bin is less. On the contrary, when there is more material, the volume of the resistance airbag is smaller, and the amount of curing agent entering is more, thereby achieving that within the same adding time, the amount of curing agent can be determined according to the amount of filling each time, so that there is no need to calculate the amount each time separately, thereby improving the filling efficiency.

[0030] 3. The present invention starts the servo motor at the top of the filling bin to drive the stirring rod to rotate, thereby stirring the material and curing agent in the inner cavity of the filling bin through the rotation of the stirring rod, so that the filling can proceed normally, and then the stirring rod is located below the pressure plate to prevent the pressure plate from affecting the normal use of the stirring rod.

[0031] 4. The present invention adopts the above-mentioned technical solution of preparing gangue into slurry for transportation and solidifying gangue for damming. The results of several actual tests and trials show that compared with the existing technology, it has the advantages of simple and practical construction facilities and treatment methods, high efficiency in gangue treatment, low cost, greatly reduced environmental pollution, convenient transportation, and the formed gangue stockpile is solid and safe. It greatly avoids the contact of the gangue pile with a large amount of air during traditional gangue stacking. If the bottom spontaneously ignites, it is difficult to extinguish the fire, and it is easy to cause collapse accidents, posing a major safety hazard. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structural connection of the present invention;

[0033] Figure 2 This is a schematic diagram of the connection of the filling bin structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the piston-cylinder connection structure of the present invention;

[0035] Figure 4 This is a schematic diagram of the connection of the cooling chamber structure of the present invention;

[0036] Figure 5 This is a schematic diagram of the servo motor connection structure of the present invention.

[0037] Figure 6 This is a diagram showing the effect of building a dam with waste rock in an embodiment of the present invention.

[0038] In the figure: 1. support frame; 2. filling bin; 3. telescopic injection pipe; 4. pressure plate; 5. linkage rod; 6. piston head; 7. piston cylinder; 8. movable gear; 9. acceleration gear; 10. limit support plate; 11. conveying roller; 12. heat absorption pipe; 13. movable hose; 14. cooling bin; 15. heat sink; 16. connecting pipe; 17. resistance airbag; 18. blocking bin; 19. fixing plate; 20. control valve; 21. conveying pump; 22. filling pipe; 23. servo motor; 24. stirring rod; 25. fixing ring; 26. transmission gear. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figures 1 to 5As shown, the embodiment of the present invention provides a dam filling device for solidifying a waste rock pile, comprising a support frame 1, a filling bin 2 is fixedly installed on the top of the support frame 1, a telescopic injection pipe 3 is fixedly installed on the top of the filling bin 2, a pressing plate 4 is fixedly installed on the bottom end of the telescopic injection pipe 3, a linkage rod 5 is fixedly installed on the top of the pressing plate 4, a piston head 6 is fixedly installed on the bottom end of the linkage rod 5, a piston cylinder 7 is fixedly sleeved on the outside of the filling bin 2, a movable gear 8 is fixedly installed on the bottom end of the piston head 6, an acceleration gear 9 is movably connected to the outside of the filling bin 2, a limited support plate 10 is fixedly installed on the outside of the filling bin 2, a conveying roller 11 is movably connected to the inner cavity of the limited support plate 10, a transmission gear 26 is fixedly installed on the side of the conveying roller 11 away from the filling bin 2, a heat absorption pipe 12 is fixedly installed on the inner cavity of the filling bin 2, a movable hose 13 is fixedly installed on the middle part of the heat absorption pipe 12, a cooling bin 14 is fixedly installed on the outside of the filling bin 2, and a heat sink 15 is fixedly sleeved on the side of the cooling bin 14 away from the filling bin 2;

[0041] The working principle and beneficial effects of the above technical solution are as follows: the mud material is transported to the filling bin 2 at the bottom of the pressure plate 4 through the telescopic injection pipe 3. At this time, the pressure plate 4 is squeezed by the mud, driving the pressure plate 4 to rise. When the pressure plate 4 rises, it drives the linkage rod 5, and then drives the piston head 6 to rise, thereby driving the movable gear 8 to move. When the movable gear 8 moves, it drives the acceleration gear 9 meshing with it to rotate, and then drives the transmission gear 26 to rotate. The rotation of the transmission gear 26 squeezes the movable hose 13, so that the coolant in the inner cavity of the heat absorption tube 12 circulates. Since the heat absorption tube 12, the movable hose 13, and the cooling bin 14 are in a sealed state, the coolant in the inner cavity of the cooling bin 14 can circulate to the inner cavity of the heat absorption tube 12, thereby realizing the cooling of the material through the heat absorption tube 12, avoiding the instability of the material due to the high temperature during the filling process.

[0042] like Figure 2 As shown, in one embodiment, the bottom end of the piston cylinder 7 is fixedly connected with a connecting pipe 16, the top end of the connecting pipe 16 is fixedly installed with a resistance airbag 17, the top end of the filling chamber 2 is fixedly installed with a blocking chamber 18, the inner cavity of the blocking chamber 18 is provided with a fixing plate 19, and the top end of the blocking chamber 18 is provided with a control valve 20;

[0043] The working principle and beneficial effects of the above technical solution are as follows: when the piston head 6 is driven by the linkage rod 5 to move in the inner cavity of the piston cylinder 7, the air in the inner cavity of the piston cylinder 7 is extracted, and the extracted air is discharged from the resistance airbag 17 and enters the bottom end of the piston cylinder 7 along the connecting pipe 16. When the feeding is completed, the control valve 20 is started and the opening time is fixed, so that the curing agent enters from the blocking bin 18. When there is less material in the inner cavity of the filling bin 2 and the bottom end of the pressure plate 4, the air extracted from the resistance airbag 17 is relatively small, and the volume of the resistance airbag 17 is relatively large, so that the blocking area of ​​the curing agent is relatively large, and then the amount of curing agent entering the inner cavity of the filling bin 2 is relatively small. On the contrary, when there is more material, the volume of the resistance airbag 17 is smaller, and the amount of curing agent entering is relatively large, thereby achieving that within the same addition time, the amount of curing agent can be determined according to the amount of filling each time, so that there is no need to calculate the amount each time separately, thereby improving the filling efficiency.

[0044] In this embodiment, the curing agent used is HJW01 type clay slurry curing agent.

[0045] like Figure 5 As shown, in one embodiment, a servo motor 23 is fixedly mounted on the top of the filling bin 2, and a stirring rod 24 is fixedly sleeved on the output shaft of the servo motor 23, and the stirring rod 24 is located below the pressing plate 4;

[0046] The working principle and beneficial effects of the above technical solution are as follows: through the servo motor 23 at the top of the filling bin 2, the servo motor 23 is started to drive the stirring rod 24 to rotate, so that the material and curing agent in the inner cavity of the filling bin 2 are stirred by the rotation of the stirring rod 24, so that the filling can proceed normally, and then the stirring rod 24 is located below the pressure plate 4, thereby preventing the pressure plate 4 from affecting the normal use of the stirring rod 24.

[0047] like Figure 5 As shown, in one embodiment, a fixing ring 25 is fixedly installed on the outer side of the filling bin 2, the piston cylinder 7 is fixedly sleeved in the inner cavity of the fixing ring 25, the bottom end of the filling bin 2 is fixedly connected to a delivery pump 21, and the output end of the delivery pump 21 is fixedly sleeved with a filling pipe 22;

[0048] The working principle and beneficial effects of the above technical solution are as follows: the piston cylinder 7 is supported and fixed by the fixing ring 25 on the outside of the stuffing bin 2, so that the piston cylinder 7 can be fixed for use, and then the delivery pump 21 fixedly connected to the bottom end of the stuffing bin 2 is started to discharge the material in the inner cavity of the stuffing bin 2, and then the stuffing is filled through the stuffing pipe 22.

[0049] like Figure 3 As shown, in one embodiment, the acceleration gear 9 is composed of a large gear and a small gear, the large gear is meshed with the transmission gear 26, and the small gear is meshed with the movable gear 8;

[0050] The working principle and beneficial effects of the above technical solution are as follows: the small gear is meshed with the movable gear 8, and when the movable gear 8 drives the small gear to rotate one circle, the large gear also rotates one circle, but at this time, the large gear is meshed with the transmission gear 26, and the transmission gear 26 needs to rotate multiple circles when the large gear rotates one circle, so that the conveying roller 11 rotates, thereby circulating the water inside the heat absorption tube 12.

[0051] like Figure 3 As shown, in one embodiment, the heat absorption tube 12 is S-shaped, the heat absorption tube 12 is located at the bottom of the inner cavity of the filling bin 2, the heat absorption tube 12 is connected with the inner cavity of the cooling bin 14, the movable hose 13 is located in the inner cavity of the limiting support plate 10 and is squeezed by the conveying roller 11, and a round hole is opened at the bottom end of the piston cylinder 7, and the piston head 6 and the movable gear 8 are fixedly connected by a round rod passing through the round hole;

[0052] The working principle and beneficial effects of the above technical solution are as follows: the heat absorption tube 12 is S-shaped, so that the heat absorption tube 12 can contact with more materials, so that more materials can be cooled, thereby avoiding dangerous situations caused by the movement of materials, and then the heat absorption tube 12 is connected with the inner cavity of the cooling bin 14, so that the coolant with a lower temperature in the inner cavity of the cooling bin 14 is replaced by the coolant with a higher temperature in the inner cavity of the heat absorption tube 12, thereby avoiding the situation where the coolant in the inner cavity of the heat absorption tube 12 is continuously at a high temperature and cannot be effectively cooled.

[0053] like Figure 2 As shown, in one embodiment, there are two fixing plates 19, which are respectively located on the left and right sides of the inner cavity of the blocking chamber 18, and the fixing plates 19 support the resistance airbag 17. The bottom of the inner cavity of the piston cylinder 7 is connected with the inner cavity of the resistance airbag 17 through the connecting pipe 16;

[0054] The working principle and beneficial effects of the above technical solution are as follows: two fixing plates 19 are respectively located on the left and right sides of the inner cavity of the blocking chamber 18, so that the resistance airbag 17 can be supported by the fixing plates 19, thereby preventing the resistance airbag 17 from being displaced in the inner cavity of the blocking chamber 18.

[0055] like Figure 2 As shown, in one embodiment, the bottom end of the linkage rod 5 is a telescopic rod, the telescopic rod is fixedly connected to the pressing plate 4, and the heat sink 15 is located in the inner cavity of the cooling chamber 14;

[0056] The working principle and beneficial effects of the above technical solution are as follows: the bottom end of the linkage rod 5 is a telescopic rod, so that the pressure plate 4 can drive the linkage rod 5 to move only after it rises to a certain height, and then the heat sink 15 is located in the inner cavity of the cooling chamber 14, so that the heat sink 15 can contact the coolant in the inner cavity of the cooling chamber 14, thereby absorbing the heat absorbed by the coolant in the inner cavity of the cooling chamber 14 and dissipating the heat.

[0057] like Figure 1 As shown, in one embodiment, a part of the mined gangue is crushed and ground, then water is added to mix it into a slurry, then it is loaded into a filling device, a curing agent is added, and then the gangue slurry is used to fill and build a dam to isolate the internal gangue pile from the outside, and then a batch of gangue piles are poured outside the gangue slurry, and then the gangue slurry is used to build a dam outside the gangue pile, and so on. After the site is closed, grouting is performed once on the top of the gangue pile;

[0058] When adding curing agent, firstly, the material is inputted from the telescopic injection tube 3 into the inner cavity of the filling bin 2, and is located at the bottom end of the pressing plate 4. At this time, the pressing plate 4 can be lifted up by the squeezing of the material on the pressing plate 4, and the pressing plate 4 drives the linkage rod 5 to move, and the linkage rod 5 drives the piston head 6 in the inner cavity of the piston cylinder 7 to move, and the piston head 6 extracts the air at the bottom end of the inner cavity of the piston cylinder 7, and the extracted air is discharged from the resistance airbag 17 and enters the inner cavity of the piston cylinder 7 along the transmission gear 26, so that the volume of the resistance airbag 17 changes. When the material is added, the material in the inner cavity of the filling bin 2 is less, the distance moved by the piston head 6 is shorter, and the volume of the resistance airbag 17 is larger. When the material in the inner cavity of the filling bin 2 is more, the distance moved by the piston head 6 is longer, and the volume of the resistance airbag 17 is smaller. At this time, the control valve 20 is started to input the curing agent into the inner cavity of the blocking bin 18, and the curing agent is blocked by the resistance airbag 17. When the volume of the resistance airbag 17 is different, the amount of curing agent entering the inner cavity of the filling bin 2 in the same time is also different;

[0059] The coolant in the inner cavity of the stuffing tube 22 is used to cool the material in the inner cavity of the stuffing bin 2. When the pressing plate 4 moves, the piston head 6 is driven to move, and the piston head 6 drives the movable gear 8 to move. The movable gear 8 is meshed with the acceleration gear 9, thereby driving the transmission gear 26 to rotate. When the transmission gear 26 rotates, it drives the stuffing tube 22 to squeeze the coolant in the inner cavity of the servo motor 23 and the stuffing tube 22. The negative pressure in the inner cavity of the servo motor 23 causes the coolant in the inner cavity of the stuffing tube 22 and the stirring rod 24 to circulate, and the coolant is dissipated through the fixing ring 25.

[0060] Then, the servo motor 23 is started to drive the stirring rod 24 to rotate and stir the material and the curing agent to make them fully mixed. When the mixing is completed, the filling pipe 22 is started to extract the material from the inner cavity of the filling bin 2 and fill it through the filling pipe 22.

[0061] This embodiment provides a process of building a gangue dam and piling materials in a valley formed between two mountains. The specific steps of forming a gangue piling yard are as follows:

[0062] Step 1, installing the filling device described in the embodiment of the present invention outside the set gangue stockpile yard according to the design requirements;

[0063] Step 2, pouring a batch of mined and separated gangue around the stockpile to form a gangue wall;

[0064] Step 3, crushing and grinding a part of the mined gangue, then adding water to mix into a slurry, then loading it into a packing device, adding HJW01 clay slurry curing agent, and preparing a slurry with a concentration of less than 1kg / l of solidified material; wherein, the weight ratio of slurry gangue: slurry curing agent is 10:1;

[0065] Step 4, injecting the slurry prepared in step 3 into the waste rock wall formed in step 2 through the filling pipe 22, and filling the slurry into the gaps in the waste rock wall, and controlling the height of the waste rock wall and the particle size of the waste rock so that the slurry can fully penetrate from the upper part of the waste rock wall to the bottom of the waste rock wall to form a waste rock dam;

[0066] Step 5, repeating the above steps 2-4 on the upper part of the waste rock dam formed in step 4 to form a waste rock dam of a desired height;

[0067] Step 6, pouring a batch of mined and separated gangue into the gangue dump surrounded by the gangue dam, passing the slurry prepared in step 3 through the filling pipe 22 to the upper part of the gangue in the gangue dump, and filling the dam, the slurry is filled into the gaps in the gangue pile, and after solidification, a solidified layer is also formed on the upper part of the gangue pile, isolating the internal gangue pile from the outside, and forming a dense gangue stockpile base;

[0068] Step 7, repeating the processes of steps 5 and 6 in sequence on the upper part of the dense waste rock stockpile base formed in step 6, after cumulative solidification layer by layer, each layer of waste rock stockpile base retreats relative to the next layer of waste rock stockpile base, forming a trapezoidal structure and dense waste rock stockpile base.

[0069] In this embodiment, a water storage pond and a water channel are reserved on the upper part of the base of the uppermost layer of the waste rock stockpile.

[0070] Step 8, laying the slope greening base layer on the upper part of the base and the slope of the gangue stockpile to build a gangue stockpile that meets environmental protection requirements. The greening base layer can adopt the current conventional greening plan. In this embodiment, the greening base layer of the slope of the base of the gangue stockpile includes a mixture of soil, flower and grass seeds, fertilizers, soil adhesives, soil stabilizers, and plant straws, a supporting mesh bag, a plastic film, a skeleton net, and fixed anchor nails; the supporting mesh bag is filled with a mixture of soil, grass seeds, fertilizers, soil adhesives, soil stabilizers, and plant straws, and a mesh bag zipper is made around the supporting mesh bag. Several supporting mesh bags filled with a mixture of soil, grass seeds, fertilizers, soil adhesives, soil stabilizers, and plant straws are interconnected by the mesh bag zipper. The bottom surface of the bag body of the supporting mesh bag is compositely connected with a plastic film, and the top surface is connected with a skeleton. A net is provided, and several fixing anchors are screw-type fixing anchors that penetrate and fix the supporting net bag, the plastic film and the skeleton net, and several hooks are installed on the skeleton net to hook the supporting net bag filled with soil, grass seeds, fertilizers, soil adhesives, soil stabilizers, and a mixture of plant straws. In this embodiment, the weight ratio of the soil, grass seeds, fertilizers, soil adhesives, soil stabilizers and plant straws in the mixture is 1000 parts of soil, 6 parts of alfalfa seeds, 3 parts of creeper seeds, 100 parts of special fertilizer for greening, 0.2 parts of soil adhesives, 0.1 parts of soil stabilizers, and the plant straws are 120 parts of crushed wheat straws and 150 parts of corn straws.

[0071] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dam filling device for solidifying a gangue pile, comprising a support frame (1), characterized in that: A stuffing bin (2) is fixedly mounted on the top of the support frame (1), a telescopic injection tube (3) is fixedly mounted on the top of the stuffing bin (2), a pressure plate (4) is fixedly mounted on the bottom of the telescopic injection tube (3), a linkage rod (5) is fixedly mounted on the top of the pressure plate (4), a piston head (6) is fixedly mounted on the bottom of the linkage rod (5), a piston cylinder (7) is fixedly sleeved on the outside of the stuffing bin (2), a movable gear (8) is fixedly mounted on the bottom of the piston head (6), an acceleration gear (9) is movably connected to the outside of the stuffing bin (2), and the stuffing bin (2) is movably connected to the outside of the stuffing bin (2). A limit support plate (10) is fixedly mounted on the outer side of the material bin (2); a conveying roller (11) is movably connected to the inner cavity of the limit support plate (10); a transmission gear (26) is fixedly mounted on the side of the conveying roller (11) away from the filling bin (2); a heat absorption pipe (12) is fixedly mounted on the inner cavity of the filling bin (2); a movable hose (13) is fixedly mounted on the middle part of the heat absorption pipe (12); a cooling bin (14) is fixedly mounted on the outer side of the filling bin (2); and a heat sink (15) is fixedly mounted on the side of the cooling bin (14) away from the filling bin (2); The bottom end of the piston cylinder (7) is fixedly connected to a connecting pipe (16), the top end of the connecting pipe (16) is fixedly mounted with a resistance airbag (17), the top end of the filling chamber (2) is fixedly mounted with a blocking chamber (18), the inner cavity of the blocking chamber (18) is provided with a fixing plate (19), and the top end of the blocking chamber (18) is provided with a control valve (20); The heat absorption tube (12) is S-shaped and is located at the bottom of the inner cavity of the filling bin (2). The heat absorption tube (12) is connected to the inner cavity of the cooling bin (14). The movable hose (13) is located in the inner cavity of the limiting support plate (10) and is squeezed by the conveying roller (11). A circular hole is formed at the bottom end of the piston cylinder (7), and the piston head (6) and the movable gear (8) are fixedly connected by a round rod passing through the circular hole.

2. The damming filling device for solidifying gangue heap according to claim 1, characterized in that: A servo motor (23) is fixedly mounted on the top of the filling bin (2), and a stirring rod (24) is fixedly sleeved on the output shaft of the servo motor (23), wherein the stirring rod (24) is located below the pressing plate (4).

3. The damming filling device for solidifying gangue heap according to claim 2, characterized in that: A fixing ring (25) is fixedly mounted on the outer side of the stuffing bin (2), the piston cylinder (7) is fixedly sleeved in the inner cavity of the fixing ring (25), the bottom end of the stuffing bin (2) is fixedly connected to a delivery pump (21), and the output end of the delivery pump (21) is fixedly sleeved with a stuffing pipe (22).

4. The damming filling device for solidifying gangue heap according to claim 3, characterized in that: The acceleration gear (9) is composed of a large gear and a small gear, the large gear is meshed with the transmission gear (26), and the small gear is meshed with the movable gear (8).

5. The damming filling device for solidifying gangue heap according to claim 4, characterized in that: There are two fixing plates (19) in total. The two fixing plates (19) are respectively located on the left and right sides of the inner cavity of the blocking chamber (18). The fixing plates (19) support the resistance airbag (17). The bottom of the inner cavity of the piston cylinder (7) is connected to the inner cavity of the resistance airbag (17) via a connecting tube (16).

6. The dam-building filling device for solidifying gangue heap according to claim 5, characterized in that: The bottom end of the linkage rod (5) is a telescopic rod, the telescopic rod is fixedly connected to the pressure plate (4), and the heat sink (15) is located in the inner cavity of the cooling chamber (14).

7. A dam-building method for solidifying a waste rock pile, characterized in that: A portion of the mined gangue is crushed and ground, water is added to mix it into a slurry, and then it is loaded into the dam filling device according to claim 6, a curing agent is added, and then the gangue slurry is used as a filling material to build a dam, the internal gangue pile is isolated from the outside, and a batch of gangue piles are poured outside the gangue slurry, and then the gangue slurry is used to build a dam outside the gangue pile, and so on. After the site is closed, grouting is performed once on the top of the gangue pile, and a gangue stockpile is formed after greening; When adding the curing agent, the material is firstly inputted from the telescopic injection tube (3) into the inner cavity of the filling chamber (2) and located at the bottom end of the pressing plate (4). At this time, the pressing plate (4) is pressed by the material, so that the pressing plate (4) can rise, and the pressing plate (4) drives the linkage rod (5) to move, and the linkage rod (5) drives the piston head (6) in the inner cavity of the piston cylinder (7) to move, and the piston head (6) extracts the air at the bottom end of the inner cavity of the piston cylinder (7). The extracted air is discharged from the resistance airbag (17) and enters the inner cavity of the piston cylinder (7) along the connecting tube (16), thereby making the resistance airbag (17) ) changes in volume. When the material is added, the material in the inner cavity of the filling bin (2) is less, the distance moved by the piston head (6) is shorter, and the volume of the resistance airbag (17) is larger. When the material in the inner cavity of the filling bin (2) is more, the distance moved by the piston head (6) is longer, and the volume of the resistance airbag (17) is smaller. At this time, the control valve (20) is started to input the curing agent into the inner cavity of the blocking bin (18), and the curing agent is blocked by the resistance airbag (17). When the volume of the resistance airbag (17) is different, the amount of curing agent entering the inner cavity of the filling bin (2) in the same time is also different; The material in the inner cavity of the filling bin (2) is cooled by the cooling liquid in the inner cavity of the heat absorption tube (12). When the pressure plate (4) moves, the piston head (6) is driven to move. The piston head (6) drives the movable gear (8) to move. The movable gear (8) meshes with the acceleration gear (9), thereby driving the transmission gear (26) to rotate. The rotation of the transmission gear (26) squeezes the movable hose (13), so that the cooling liquid in the inner cavity of the heat absorption tube (12) circulates. Since the heat absorption tube (12), the movable hose (13) and the cooling bin (14) are in a sealed state, the cooling liquid in the inner cavity of the cooling bin (14) can circulate to the inner cavity of the heat absorption tube (12), thereby achieving cooling of the material through the heat absorption tube (12); Then, the servo motor (23) is started to drive the stirring rod (24) to rotate and stir the material and the curing agent to fully mix them. When the mixing is completed, the filling pipe (22) is started to draw the material from the inner cavity of the filling bin (2) and fill it through the filling pipe (22).

8. A dam-building method for solidifying a waste rock pile according to claim 7, characterized in that: The specific steps of forming a waste rock dump are: Step 1, installing the filling device outside the set gangue stockpile; Step 2, pouring a batch of mined and separated gangue around the stockpile to form a gangue wall; Step 3, crushing and grinding a part of the mined gangue, then adding water to mix into a slurry, then loading it into a packing device, adding a curing agent, and preparing a slurry with a concentration of less than 1 kg / L of solidified matter; wherein, the weight ratio of the slurry gangue: slurry curing agent is 10:1; Step 4, injecting the slurry prepared in step 3 into the waste rock wall formed in step 2 through a filling pipe (22), and filling the slurry into the gaps in the waste rock wall. The height of the waste rock wall and the particle size of the waste rock are controlled so that the slurry can fully penetrate from the upper part of the waste rock wall to the bottom of the waste rock wall, thereby forming a waste rock dam; Step 5, repeating the above steps 2-4 on the upper part of the waste rock dam formed in step 4 to form a waste rock dam of a desired height; Step 6, pouring a batch of mined and separated gangue into the gangue dump surrounded by the gangue dam, and filling the slurry prepared in step 3 into the upper part of the gangue in the gangue dump through the filling pipe (22), and carrying out filling damming. The slurry is filled into the gaps in the gangue pile, and after solidification, a solidified layer is also formed on the upper part of the gangue pile, isolating the internal gangue pile from the outside, and forming a dense gangue pile material field matrix; Step 7, repeating the processes of steps 5 and 6 in sequence on the upper part of the dense waste rock stockpile base formed in step 6, after cumulative solidification layer by layer, each layer of waste rock stockpile base retreats relative to the next layer of waste rock stockpile base, to form a trapezoidal structure and dense waste rock stockpile base; Step 8: Lay the slope greening base layer on the upper part of the base and the slope of the gangue stockpile yard to build a green gangue stockpile yard.

9. A dam-building method for solidifying a waste rock pile according to claim 8, characterized in that: In step 7, a water storage pond is reserved or artificially created on the upper part of the uppermost waste rock stockpile base, or other exposed parts of the waste rock stockpile base, as a water source for land irrigation, collecting rainwater or well water for irrigation or spraying dust removal.

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