Medium-length hole drift filling mining method and filling device

Abstract

The invention relates to the technical field of filling mining, in particular to a medium-length hole drift filling mining method and a filling device.The medium-length hole drift filling mining method comprises the following steps that firstly, an upper-layer rock drilling linked roadway and a lower-layer ore removal linked roadway are constructed, the two layers serve as a stoping unit, the upper layer is mined firstly, a drilling and blasting method is adopted for construction when the upper layer is mined, and the lower layer is mined; the supporting form is full-section anchor net shotcrete supporting; 2, when the upper layer rock drilling drift is constructed to the designed position, cutting groove construction is conducted, and the cutting groove is constructed through a drilling and blasting method; thirdly, after construction of the cutting groove is completed, a vertical hole is constructed; and 4, after two layers are stoped, filling is conducted through a filling device. According to the device, through the arrangement of the net laying assembly, the net pieces play a role in connecting solidified tailings or cement mortar, so that the situation that the tailings or the cement mortar cracks after being solidified and cracks and collapses is further avoided, and the internal stability of the goaf after filling is improved.

Description

Technical Field

[0001] The invention relates to the field of filling mining, and in particular to a medium-deep hole approach filling mining method and a filling device. Background Art

[0002] Medium-deep hole approach and filling mining method is a commonly used underground mining method, which is suitable for deposits with thick ore bodies, high ore grades and good surrounding rock conditions. This method achieves efficient and safe ore mining through medium-deep hole drilling and approach excavation combined with filling technology.

[0003] When mining is carried out using the approach-fill mining method, filling the goaf with filling technology is a traditional Chinese medicine step to ensure mining safety. When filling the goaf, if the filling material is not filled completely inside the goaf, so that the goaf after filling still has the risk of collapse, it will still cause safety hazards in the mining process. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a medium-deep hole entry filling mining method and a filling device.

[0005] In a first aspect, the present invention provides a medium-long hole entry filling mining method, comprising the following steps:

[0006] Step 1: First construct the upper layer rock drilling tunnel and the lower layer mining tunnel, and take the two layers as a mining unit. First, mine the upper layer. The upper layer is mined by drilling and blasting method, and the support form is full-section anchor mesh spraying support;

[0007] Step 2: When the upper layer rock drilling access is constructed to the designed position, the cutting groove is constructed by drilling and blasting method;

[0008] Step 3: After the cutting slot is completed, construct the vertical hole, and after the entire access road is filled, proceed to the next access road in the mining order;

[0009] Step 4: After the two layers are mined, the filling is performed by a filling device;

[0010] Step 5: After all the upper and lower layers of this mining site are mined and filled, the layers are raised to the upper two layers, and the construction technology is the same as that of the lower layers.

[0011] In a second aspect, a filling device for a medium-deep hole approach filling mining method is provided, the filling device comprising:

[0012] The sliding frame is slidably installed on the top of the goaf through a slide rail;

[0013] The box body is slidably installed on the top of the goaf through a slide rail and is detachably connected to the sliding frame through a switching assembly;

[0014] A driving assembly, installed at the top of the goaf, for driving the box to reciprocate inside the goaf;

[0015] A conveying assembly is installed inside the box body and is used to convey tailings or cement mortar after external mixing to the inside of the goaf;

[0016] A mesh laying assembly is installed inside the sliding frame and is used to lay mesh sheets at intervals when the box moves to transport tailings or cement mortar;

[0017] The staff fixes the stone slabs at the opening of the goaf to seal the goaf, leaving only the opening for the sliding frame to perform the filling operation, thereby preventing the filling tailings or cement mortar from flowing out;

[0018] The slide rail is installed on the top of the goaf, and then the box and the sliding frame are installed on the top of the goaf through the slide rail. After starting, the driving component can drive the box to move, thereby realizing the driving of the box. When the box and the sliding frame are connected through the switching component, the driving component drives the box to move synchronously. When the connection between the box and the sliding frame is cancelled, the driving component drives the box to move independently;

[0019] When the sliding frame moves, it can drive the mesh laying assembly to move synchronously, so that the mesh laying assembly can lay the mesh during the movement, so that the mesh is laid inside the goaf;

[0020] When the box moves, it can drive the conveying assembly to move, and the conveying assembly conveys the tailings or cement mortar to the inside of the goaf, so that the tailings or cement mortar accumulates inside the goaf;

[0021] When transporting tailings or cement mortar to the inside of the goaf for accumulation, the mesh is transported at intervals so that the tailings or cement mortar are stacked back and forth with the mesh in the middle after solidification, so that the mesh plays a connecting role for the solidified tailings or cement mortar, thereby further avoiding the occurrence of cracks and collapse of the tailings or cement mortar after solidification, which is beneficial to improve the internal stability of the goaf after filling.

[0022] Preferably, the drive assembly comprises:

[0023] A first motor is fixed to the outside of the goaf through a fixing plate;

[0024] Four synchronous wheels are symmetrically mounted on the top of the inner wall of the goaf and the bottom of the fixed plate for rotation;

[0025] A synchronous chain belt is installed outside the four synchronous wheels, one side of the synchronous chain belt is fixedly connected to the box body, and the other side passes through the box body;

[0026] After the first motor is started, the output shaft drives the synchronous wheel connected to it to rotate, and the synchronous wheel drives the synchronous chain belt to drive, and the synchronous chain belt pulls the box body during the transmission, thereby realizing the driving of the box body;

[0027] Two synchronous chains can be provided, and the two synchronous chains are fixed in different directions with the box. When the synchronous wheel drives the synchronous chain to transmit, the two synchronous chains have the same driving direction on the box, thereby generating driving force at two positions on the box. The two positions have the same driving direction on the box, which is conducive to driving the box to move stably.

[0028] Preferably, the conveying assembly comprises:

[0029] Two telescopic chambers are symmetrically arranged on two sides of the box;

[0030] Two telescopic frames are respectively slidably mounted inside the two telescopic chambers, and the tops of the two telescopic frames are penetrated with a feeding port, and the tops of the two telescopic frames are penetrated with a feeding port;

[0031] Two groups of first cylinders are installed inside the box, and the two groups of first cylinders are used to push the two telescopic frames to move respectively;

[0032] A conveying inner cavity is provided inside the box body, and when the telescopic frame is pushed out, the conveying inner cavity is aligned with the loading port;

[0033] A delivery pipe is installed below the slide rail through a support frame sliding support, one end of the delivery pipe is connected to the delivery inner cavity, and the other end of the delivery pipe is connected to an external tailings or cement mortar pumping mechanism;

[0034] When the first cylinder is started, it can push the corresponding telescopic frame to move through the telescopic rod, so that the two groups of first cylinders can push the telescopic frames on both sides to extend respectively. When the telescopic frames are extended, the discharge port is exposed, and the loading port is aligned with the conveying inner cavity, so that the tailings or cement mortar inside the conveying inner cavity enters the interior of the telescopic frame through the loading port and is then discharged from the discharge port, and as the box moves, the tailings or cement mortar can be discharged while moving, which is beneficial to evenly laying the tailings or cement mortar inside the goaf, and is beneficial to stacking the tailings or cement mortar and the mesh in layers, which is beneficial to improving the stability of the tailings or cement mortar after filling the goaf.

[0035] Preferably, the web laying assembly comprises:

[0036] A first inner cavity and a second inner cavity are symmetrically opened inside the sliding frame;

[0037] A mesh sheet is stacked inside the first inner cavity and the second inner cavity;

[0038] A flip plate, flipped and mounted on the side wall of the second inner cavity;

[0039] An auxiliary mechanism is installed inside the sliding frame, and one end of the mesh is driven by the auxiliary mechanism to be transported outward, and the auxiliary mechanism is also used to drive one end of the mesh to move vertically;

[0040] The mesh can be stacked and stored inside the first inner cavity and the second inner cavity, and the flip plate can facilitate the placement of the mesh. After the auxiliary mechanism is started, one end of the mesh is pulled to transport the mesh outward, so that the mesh is stacked inside the goaf after being transported outward, so that the mesh can be stacked with tailings or cement mortar, which is beneficial to improve the stability of the goaf after the tailings or cement mortar is filled;

[0041] The position of the auxiliary mechanism inside the moving frame can be adjusted. When the auxiliary mechanism is located between the first inner cavity and the second inner cavity, the first inner cavity and the second inner cavity are separated. The mesh is supported by a first transmission roller provided inside for rolling, so as to adjust the conveying track of the mesh. The end of the mesh is conveyed directly below the sliding frame, which is beneficial for the mesh to be staggered with the telescopic frame during laying, and is beneficial for preventing the tailings or cement mortar conveyed on the telescopic frame from adhering to the mesh during the falling process, resulting in uneven laying of the tailings or cement mortar.

[0042] When the auxiliary mechanism is located on the side of the first inner cavity and the second inner cavity facing away from the flip plate, the first inner cavity and the second inner cavity can be set to be connected. At this time, when replenishing the stacked meshes inside the first inner cavity and the second inner cavity, the interior of the first inner cavity and the second inner cavity can be directly replenished, which is beneficial to improve the efficiency of replenishing the meshes.

[0043] Preferably, the auxiliary mechanism comprises:

[0044] A lifting box is installed inside the sliding frame through a lifting frame;

[0045] Two second transmission rollers are rotatably mounted inside the lifting box;

[0046] A transmission mechanism is installed on the top of the lifting box and is used to drive the two second transmission rollers to rotate, so that one end of the mesh passes through between the two second transmission rollers and is driven to be transported outward;

[0047] Multiple groups of threaded sleeves, two of which form a group, and the threaded sleeves in the same group are symmetrically rotatably mounted on both ends of the rotating piece of the lifting frame;

[0048] A plurality of bidirectional screws are arranged at the middle gap of the rotating piece of the lifting frame, and the bidirectional screws are threadedly connected with the threaded sleeve;

[0049] A fixing frame, wherein the threaded sleeve of the same group is slidably mounted inside one of the fixing frames, and a third motor for driving the bidirectional screw to rotate is fixed at the end of the fixing frame;

[0050] After the third motor is started, it drives the bidirectional screw connected to it to rotate through the output shaft. After the bidirectional screw rotates, it drives the threaded sleeve threadedly connected to it to move. It should be noted that the thread directions at both ends of the bidirectional screw are symmetrical, thereby driving the threaded sleeves at both ends to move toward each other, thereby pushing the rotating piece of the lifting frame to flip toward the middle, thereby pushing the lifting frame to push the lifting box downward, and vice versa, driving the lifting box upward, thereby playing a vertical driving role for the lifting box, so that the lifting box always maintains a constant distance from the top of the tailings or cement mortar laid inside the goaf, which is beneficial to the stable laying of the mesh and to improving the stability of the filling inside the goaf.

[0051] Preferably, the mesh comprises:

[0052] A plurality of pipes, wherein the pipes are divided into transverse pipes and longitudinal pipes, and the transverse pipes and the longitudinal pipes are cross-connected and connected to form the mesh;

[0053] A plurality of circular holes are respectively opened in a linear array on the side walls of the transverse tube and the longitudinal tube;

[0054] A plurality of isolation nets are arranged corresponding to the circular holes one by one and fixed inside the corresponding circular holes;

[0055] A plurality of wax blocks are arranged corresponding to the circular holes one by one and fixed inside the corresponding circular holes;

[0056] The arrangement of several pipelines enables air flow inside the mesh to form a connection. When tailings or cement mortar is laid, the wax block and the isolation net isolate the tailings or cement mortar, which helps to prevent the tailings or cement mortar from entering the inside of the pipeline. After the tailings or cement mortar is laid, high-temperature air is input into the inside of the pipeline. The high-temperature air melts the wax block, causing the wax block to melt into liquid and be discharged along the pipeline. At this time, the isolation net is exposed. When wastewater is generated in the tailings or cement mortar, it can flow out along the pipeline. When cracks are caused by uneven moisture on the inner wall of the tailings or cement mortar, water can also be injected through the pipeline, which helps to make the tailings or cement mortar solidify evenly during the solidification process and reduce the generation of cracks. At the same time, by conveying airflow into the pipeline, the airflow inside the tailings or cement mortar can be driven to flow, so that airflow flows on the surface and inside of the tailings or cement mortar to accelerate solidification, which is beneficial to the uniform solidification of the tailings or cement mortar to reduce the generation of cracks, thereby helping to improve the stability of the filling inside the goaf.

[0057] Preferably, the mesh further comprises:

[0058] A box body, fixed between the longitudinal tubes and connected with all the longitudinal tubes;

[0059] A temperature sensor is installed inside the box body and is used to detect the temperature inside the mesh;

[0060] A humidity sensor is installed inside the box body and is used to detect the humidity inside the mesh;

[0061] The temperature sensor and humidity sensor are installed inside the box body, and the box body is arranged at intervals. The temperature sensor and humidity sensor can detect the temperature and humidity inside the tailings or cement mortar, which is beneficial to adjust according to the temperature and humidity inside the tailings or cement mortar to promote the uniform solidification of the tailings or cement mortar and reduce the generation of cracks.

[0062] Preferably, it also includes:

[0063] A tension scale fixed inside the second inner cavity;

[0064] A clamping claw is fixed to the bottom of the tension scale, and the other end of the mesh is clamped and fixed by the clamping claw;

[0065] The plug sleeve and the plug pin are respectively fixed to the two ends of the mesh;

[0066] When the mesh is exhausted, the power of the mesh delivery pulls the clamp, and the clamp pulls the tension scale, so that the tension scale detects the tension. When the tension scale detects the tension, an alarm is issued, thereby reminding the staff that the mesh is exhausted. The staff can then connect the new mesh to the exhausted mesh through the plug-in connection of the plug sleeve and the plug pin, and place the new mesh into the second inner cavity, thereby replenishing the mesh.

[0067] Preferably, the switching component comprises:

[0068] Two second cylinders are symmetrically fixed inside the mounting grooves opened at both ends of the box;

[0069] Two limit blocks are respectively fixed to the ends of the telescopic rods of the two second cylinders;

[0070] Two limiting grooves are respectively formed on the side walls of the sliding frame adjacent to the limiting block, the limiting grooves and the limiting block are adapted to each other, and the edges of the limiting grooves and the limiting block are both provided with inclined surfaces;

[0071] When the second cylinder is started, the limit block can be pushed into the limit groove through the telescopic rod, so that the sliding frame is connected to the box body, so that when the box body moves, it can drive the sliding frame to move. When the second cylinder is started to retract the telescopic rod, the limit block is moved out from the inside of the limit groove, thereby releasing the connection between the sliding frame and the box body, so that the box body can move freely to lay tailings or cement mortar, until the tailings or cement mortar are laid to a certain thickness, it drives the sliding frame to move synchronously to lay the mesh.

[0072] Compared with the prior art, the present invention has the following beneficial effects:

[0073] 1. The present invention arranges the mesh assembly so that the mesh plays a connecting role for the solidified tailings or cement mortar, thereby further avoiding the occurrence of cracks and collapse of the tailings or cement mortar after solidification, which is beneficial to improving the internal stability of the goaf after filling.

[0074] 2. The present invention provides an auxiliary mechanism so that the lifting box always maintains a constant distance from the top of the tailings or cement mortar laid inside the goaf, which is beneficial to the stable laying of the mesh and to improving the stability of the filling inside the goaf.

[0075] 3. The present invention reminds the staff that the mesh is exhausted by setting a tension scale. The staff can then connect a new mesh to the exhausted mesh through the plug-in connection of the plug sleeve and the plug pin, and place the new mesh into the second inner cavity, thereby replenishing the mesh. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] Figure 1 It is a schematic diagram of the method flow of the present invention.

[0077] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0078] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0079] Figure 4 For the present invention Figure 2 Schematic diagram of the enlarged structure at point B in the middle.

[0080] Figure 5 The structure of the present invention after the overall section is schematically shown. Figure 1 .

[0081] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at point C in the middle.

[0082] Figure 7 The structure of the present invention after the overall section is schematically shown. Figure 2 .

[0083] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at D in the middle.

[0084] Fig. 9 It is a schematic structural diagram of the mesh of the present invention after sectioning.

[0085] Fig.10 For the present invention Fig. 9 Schematic diagram of the enlarged structure at E in the middle.

[0086] In the figure: 1, goaf; 101, stone slab; 2, sliding frame; 201, slide rail; 202, box; 301, first motor; 302, fixed plate; 303, synchronous wheel; 304, synchronous chain belt; 4, telescopic frame; 401, telescopic cavity; 402, first cylinder; 403, unloading port; 404, loading port; 405, conveying cavity; 406, conveying pipe; 407, support frame; 5, mesh; 501, first cavity; 502, second cavity; 503, first transmission roller; 504, turning Rotating plate; 6. Lifting box; 601. Second transmission roller; 602. First gear; 603. Second motor; 604. Second gear; 605. Synchronous belt; 7. Lifting frame; 701. Bidirectional screw; 702. Third motor; 703. Fixed frame; 704. Threaded sleeve; 8. Isolation net; 9. Wax block; 1001. Plug sleeve; 1002. Plug pin; 11. Box body; 1201. Limit block; 1202. Second cylinder; 1203. Limit groove; 13. Tension scale; 1301. Clamp. DETAILED DESCRIPTION

[0087] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0088] like Figure 1 A medium-deep hole entry filling mining method is shown, comprising the following steps:

[0089] Step 1: First construct the upper layer rock drilling tunnel and the lower layer mining tunnel, and take the two layers as a mining unit. First, mine the upper layer. The upper layer is mined by drilling and blasting method, and the support form is full-section anchor mesh spraying support;

[0090] Step 2: When the upper layer rock drilling access is constructed to the designed position, the cutting groove is constructed by drilling and blasting method;

[0091] Step 3: After the cutting slot is completed, construct the vertical hole, and after the entire access road is filled, proceed to the next access road in the mining order;

[0092] Step 4: After the two layers are mined, the filling is performed by a filling device;

[0093] Step 5: After all the upper and lower layers of this mining site are mined and filled, the layers are raised to the upper two layers, and the construction technology is the same as that of the lower layers.

[0094] like Figures 2 to 10 A filling device for a medium-deep hole approach filling mining method is shown, the filling device comprising:

[0095] The sliding frame 2 is slidably mounted on the top of the goaf 1 through the slide rail 201;

[0096] The box body 202 is slidably installed on the top of the goaf 1 through the slide rail 201, and is detachably connected to the sliding frame 2 through a switching assembly;

[0097] A driving assembly is installed at the top of the goaf 1 and is used to drive the box 202 to reciprocate inside the goaf 1;

[0098] The conveying assembly is installed inside the box 202 and is used to convey the tailings or cement mortar after mixing outside to the inside of the goaf 1;

[0099] The mesh laying assembly is installed inside the sliding frame 2 and is used to lay the mesh 5 at intervals when the box 202 moves to transport tailings or cement mortar;

[0100] When adopting the approach filling mining method for mining, filling the goaf with filling technology is a traditional Chinese medicine step to ensure mining safety. When filling the goaf, if the filling material is not filled perfectly inside the goaf, the goaf after filling still has the risk of collapse, which will still cause safety hazards in the mining process;

[0101] This embodiment of the present invention can solve the above problems. The specific implementation method is as follows: the staff fixes the stone plate 101 at the opening of the goaf 1 to close the goaf 1, so that the opening of the goaf 1 only leaves the opening for the sliding frame 2 to perform the filling operation, thereby preventing the filling tailings or cement mortar from flowing out;

[0102] The slide rail 201 is installed on the top of the goaf, and then the box 202 and the sliding frame 2 are installed on the top of the goaf through the slide rail 201. After starting, the driving component can drive the box 202 to move, thereby realizing the driving of the box 202. When the box 202 and the sliding frame 2 are connected through the switching component, the driving component drives the box 202 and drives the sliding frame 2 to move synchronously. When the connection between the box 202 and the sliding frame 2 is cancelled, the driving component drives the box 202 to move independently;

[0103] When the sliding frame 2 moves, it can drive the mesh laying assembly to move synchronously, so that the mesh laying assembly can lay the mesh 5 during the movement, so that the mesh 5 is laid inside the goaf 1;

[0104] When the box 202 moves, it can drive the conveying assembly to move, and the conveying assembly conveys the tailings or cement mortar to the inside of the goaf 1, so that the tailings or cement mortar accumulates inside the goaf 1;

[0105] When conveying tailings or cement mortar to the inside of goaf 1 for accumulation, mesh 5 is conveyed at intervals, so that the tailings or cement mortar are stacked back and forth with mesh 5 in the middle after solidification, so that mesh 5 plays a connecting role for the solidified tailings or cement mortar, thereby further avoiding the occurrence of cracks and collapse of tailings or cement mortar after solidification, which is beneficial to improve the internal stability of goaf 1 after filling.

[0106] As an optional embodiment, the driving component includes:

[0107] The first motor 301 is fixed to the outside of the goaf 1 through a fixing plate 302;

[0108] Four synchronous wheels 303 are symmetrically mounted on the top of the inner wall of the goaf 1 and the bottom of the fixed plate 302;

[0109] A synchronous chain belt 304 is installed outside the four synchronous wheels 303, one side of the synchronous chain belt 304 is fixedly connected to the box body 202, and the other side passes through the box body 202;

[0110] After the first motor 301 is started, the output shaft drives the synchronous wheel 303 connected thereto to rotate, and the synchronous wheel 303 drives the synchronous chain belt 304 to drive, and the synchronous chain belt 304 pulls the box body 202 during the transmission, thereby realizing the driving of the box body 202;

[0111] Two synchronous chains 304 can be provided, and the two synchronous chains 304 are fixed in different directions with the box body 202. When the synchronous wheel 303 drives the synchronous chain belt 304 to transmit, the two synchronous chain belts 304 have the same driving direction on the box body 202, thereby generating driving forces at two positions on the box body 202. The driving directions of the two positions on the box body 202 are the same, which is conducive to driving the box body 202 to move stably.

[0112] As an optional embodiment, the conveying component includes:

[0113] Two telescopic chambers 401 are symmetrically arranged on two sides of the box body 202;

[0114] Two telescopic frames 4 are slidably mounted inside the two telescopic chambers 401, respectively. A material discharge port 403 is formed through the top of the two telescopic frames 4, and a material loading port 404 is formed through the top of the two telescopic frames 4.

[0115] Two groups of first cylinders 402 are installed inside the box 202, and the two groups of first cylinders 402 are used to push the two telescopic frames 4 to move respectively;

[0116] The conveying inner cavity 405 is opened inside the box body 202. When the telescopic frame 4 is pushed out, the conveying inner cavity 405 is aligned with the loading port 404;

[0117] The delivery pipe 406 is installed below the slide rail 201 through a support frame 407 for sliding support. One end of the delivery pipe 406 is connected to the delivery inner cavity 405, and the other end of the delivery pipe 406 is connected to an external tailings or cement mortar pumping mechanism.

[0118] The external tailings or cement mortar pumping mechanism transports the tailings or cement mortar to the interior of the transport cavity 405 through the transport pipe 406;

[0119] When the first cylinder 402 is started, it can push the corresponding telescopic frame 4 to move through the telescopic rod, so that the two groups of first cylinders 402 can push the telescopic frames 4 on both sides to extend respectively. When the telescopic frame 4 is extended, the discharge port 403 is exposed, and the loading port 404 is aligned with the conveying inner cavity 405, so that the tailings or cement mortar inside the conveying inner cavity 405 enters the interior of the telescopic frame 4 through the loading port 404 and is then discharged from the discharge port 403, and as the box body 202 moves, it can discharge the tailings or cement mortar while moving, which is beneficial to evenly lay the tailings or cement mortar inside the goaf 1, and is beneficial to stack the tailings or cement mortar and the mesh 5 in layers, which is beneficial to improve the stability of the goaf 1 after the tailings or cement mortar is filled.

[0120] As an optional embodiment, the web laying assembly includes:

[0121] The first inner cavity 501 and the second inner cavity 502 are symmetrically opened inside the sliding frame 2;

[0122] The mesh 5 is stacked inside the first inner cavity 501 and the second inner cavity 502;

[0123] The flip plate 504 is flipped and mounted on the side wall of the second inner cavity 502;

[0124] The auxiliary mechanism is installed inside the sliding frame 2. One end of the mesh 5 is driven by the auxiliary mechanism to be transported outward. The auxiliary mechanism is also used to drive one end of the mesh 5 to move vertically.

[0125] The mesh 5 can be stacked and stored inside the first inner cavity 501 and the second inner cavity 502, and the flip plate 504 can facilitate the placement of the mesh 5. After the auxiliary mechanism is started, one end of the mesh 5 is pulled to transport the mesh 5 outward, so that the mesh 5 is stacked inside the goaf 1 after being transported outward, so that the mesh 5 can be stacked with tailings or cement mortar, which is beneficial to improve the stability of the goaf 1 after the tailings or cement mortar is filled;

[0126] The position of the auxiliary mechanism inside the movable frame 2 can be adjusted. When the auxiliary mechanism is located between the first inner cavity 501 and the second inner cavity 502, the first inner cavity 501 and the second inner cavity 502 are separated. The mesh 5 is supported by the first transmission roller 503 provided inside for rolling, so as to adjust the conveying track of the mesh 5. The end of the mesh 5 is conveyed to be located directly below the sliding frame 2, which is conducive to staggering the distance between the mesh 5 and the telescopic frame 4 during laying, and is conducive to preventing the tailings or cement mortar transported on the telescopic frame 4 from adhering to the mesh 5 during the falling process, resulting in uneven laying of the tailings or cement mortar.

[0127] When the auxiliary mechanism is located on the side of the first inner cavity 501 and the second inner cavity 502 facing away from the flip plate 504, the first inner cavity 501 and the second inner cavity 502 can be set to be connected. At this time, when replenishing the stacked meshes 5 inside the first inner cavity 501 and the second inner cavity 502, the interior of the first inner cavity 501 and the second inner cavity 502 can be directly replenished, which is beneficial to improve the efficiency of replenishing the meshes 5.

[0128] As an optional embodiment, the auxiliary mechanism includes:

[0129] The lifting box 6 is installed inside the sliding frame 2 through the lifting frame 7;

[0130] Two second transmission rollers 601 are both rotatably mounted inside the lifting box 6;

[0131] The transmission mechanism is installed on the top of the lifting box 6 and is used to drive the two second transmission rollers 601 to rotate, and one end of the mesh 5 passes through between the two second transmission rollers 601 and is driven to be transported outward;

[0132] Multiple groups of threaded sleeves 704, two threaded sleeves 704 form a group, and the threaded sleeves 704 in the same group are symmetrically rotatably mounted on both ends of the rotating piece of the lifting frame 7;

[0133] A plurality of bidirectional screws 701 are arranged at the middle gap of the rotating piece of the lifting frame 7, and the bidirectional screws 701 are threadedly connected with the threaded sleeve 704;

[0134] A fixing frame 703, a threaded sleeve 704 of the same group is slidably mounted inside a fixing frame 703, and a third motor 702 is fixed at the end of the fixing frame 703 to drive the bidirectional screw 701 to rotate;

[0135] As an optional embodiment, the transmission mechanism includes:

[0136] The second motor 603 is fixed on the top of the lifting box 6, and the second gear 604 is fixed to the end of the output shaft of the second motor 603;

[0137] A first gear 602 is fixed to an end of one of the second transmission rollers 601;

[0138] A synchronous belt 605 is transmission-connected to the outside of the first gear 602 and the second gear 604;

[0139] When the second motor 603 is started, the output shaft drives the second gear 604 connected thereto to rotate. After the second gear 604 rotates, the first gear 602 is driven to rotate through the synchronous belt 605. After the first gear 602 rotates, the second transmission roller 601 connected thereto is driven to rotate. Thus, the mesh 5 is conveyed by the rotation of the second transmission roller 601, and the conveyed mesh 5 moves downward for stacking.

[0140] After the third motor 702 is started, it drives the bidirectional screw 701 connected to it to rotate through the output shaft. After the bidirectional screw 701 rotates, it drives the threaded sleeve 704 threadedly connected to it to move. It should be noted that the thread directions at both ends of the bidirectional screw 701 are symmetrical, thereby driving the threaded sleeves 704 at both ends to move towards each other, thereby pushing the rotating piece of the lifting frame 7 to flip toward the middle, thereby pushing the lifting frame 7 to push the lifting box 6 to move downward, and vice versa, driving the lifting box 6 to move upward, thereby playing a role of vertical driving the lifting box 6, so that the lifting box 6 always maintains a constant distance from the top of the tailings or cement mortar laid inside the goaf 1, which is beneficial to the stable laying of the mesh 5 and to improving the stability of the filling inside the goaf 1.

[0141] As an optional embodiment, the mesh 5 includes:

[0142] A plurality of pipes, the pipes are divided into transverse pipes and longitudinal pipes, and the transverse pipes and longitudinal pipes are cross-connected to form a mesh 5;

[0143] A plurality of circular holes are respectively provided in a linear array on the side walls of the transverse tube and the longitudinal tube;

[0144] A plurality of isolation nets 8 are arranged corresponding to the circular holes and fixed inside the corresponding circular holes;

[0145] A plurality of wax blocks 9 are arranged corresponding to the circular holes and fixed inside the corresponding circular holes;

[0146] The arrangement of several pipelines enables air flow inside the mesh 5 to form a connection. When the tailings or cement mortar is laid, the wax block 9 and the isolation net 8 isolate the tailings or cement mortar, which is beneficial to prevent the tailings or cement mortar from entering the inside of the pipeline. After the tailings or cement mortar is laid, high-temperature air is input into the inside of the pipeline. The high-temperature air melts the wax block 9, so that the wax block 9 melts into liquid and is discharged along the pipeline. At this time, the isolation net 8 is exposed. When wastewater is generated in the tailings or cement mortar, it can flow out along the pipeline. When the uneven moisture on the inner wall of the tailings or cement mortar causes cracks, water can also be injected through the pipeline, which is beneficial to make the tailings or cement mortar solidify evenly during the solidification process and reduce the generation of cracks. At the same time, by conveying airflow into the pipeline, the airflow inside the tailings or cement mortar can be driven to flow, so that there is airflow on the surface and inside of the tailings or cement mortar to accelerate solidification, which is beneficial to the uniform solidification of the tailings or cement mortar to reduce the generation of cracks, thereby helping to improve the stability of the filling inside the goaf 1.

[0147] As an optional embodiment, the mesh 5 further includes:

[0148] The box body 11 is fixed between the longitudinal tubes and communicated with all the longitudinal tubes;

[0149] A temperature sensor is installed inside the box body 11 and is used to detect the temperature inside the mesh 5;

[0150] A humidity sensor is installed inside the box body 11 and is used to detect the humidity inside the mesh 5;

[0151] The temperature sensor and the humidity sensor are installed inside the box body 11, and the box body 11 is arranged at intervals. The temperature sensor and the humidity sensor can detect the temperature and humidity inside the tailings or cement mortar, which is beneficial to adjust according to the temperature and humidity inside the tailings or cement mortar to promote the uniform solidification of the tailings or cement mortar and reduce the generation of cracks.

[0152] As an optional embodiment, it also includes:

[0153] A tension scale 13, fixed inside the second inner cavity 502;

[0154] The clamping jaw 1301 is fixed to the bottom of the tension scale 13, and the other end of the mesh 5 is clamped and fixed by the clamping jaw 1301;

[0155] The plug sleeve 1001 and the plug pin 1002 are fixed to the two ends of the mesh 5 respectively;

[0156] When the mesh 5 is exhausted, the power transmitted by the mesh 5 pulls the clamp 1301, and the clamp 1301 pulls the tension scale 13, so that the tension scale 13 detects the tension. When the tension scale 13 detects the tension, an alarm is issued, thereby reminding the staff that the mesh 5 is exhausted. The staff can then connect the new mesh 5 to the exhausted mesh 5 through the plug-in connection between the plug sleeve 1001 and the plug pin 1002, and place the new mesh 5 into the second inner cavity 502, thereby replenishing the mesh 5.

[0157] As an optional embodiment, the switching component includes:

[0158] Two second cylinders 1202 are symmetrically fixed inside the mounting grooves opened at both ends of the box body 202;

[0159] Two limit blocks 1201 are respectively fixed to the ends of the telescopic rods of the two second cylinders 1202;

[0160] Two limiting grooves 1203 are respectively formed on the side walls of the sliding frame 2 adjacent to the limiting block 1201. The limiting grooves 1203 and the limiting block 1201 are adapted to each other, and the edges of the limiting grooves 1203 and the limiting block 1201 are both provided with inclined surfaces;

[0161] When the second cylinder 1202 is started, the limit block 1201 can be pushed into the limit groove 1203 through the telescopic rod, so that the sliding frame 2 is connected to the box body 202, so that when the box body 202 moves, it can drive the sliding frame 2 to move. When the second cylinder 1202 is started to retract the telescopic rod, the limit block 1201 is moved out from the inside of the limit groove 1203, thereby releasing the connection between the sliding frame 2 and the box body 202, so that the box body 202 can move freely to lay tailings or cement mortar, until the tailings or cement mortar are laid to a certain thickness, driving the sliding frame 2 to move synchronously to lay the mesh 5.

[0162] The working principle of the present invention is as follows: the staff fixes the stone slab 101 at the opening of the goaf 1 to seal the goaf 1, so that only the opening of the goaf 1 is left for filling operation through the opening of the sliding frame 2, thereby preventing the filling tailings or cement mortar from flowing out;

[0163] The slide rail 201 is installed on the top of the goaf, and then the box 202 and the sliding frame 2 are installed on the top of the goaf through the slide rail 201. After starting, the driving component can drive the box 202 to move, thereby realizing the driving of the box 202. When the box 202 and the sliding frame 2 are connected through the switching component, the driving component drives the box 202 and drives the sliding frame 2 to move synchronously. When the connection between the box 202 and the sliding frame 2 is cancelled, the driving component drives the box 202 to move independently;

[0164] When the sliding frame 2 moves, it can drive the mesh laying assembly to move synchronously, so that the mesh laying assembly can lay the mesh 5 during the movement, so that the mesh 5 is laid inside the goaf 1;

[0165] When the box 202 moves, it can drive the conveying assembly to move, and the conveying assembly conveys the tailings or cement mortar to the inside of the goaf 1, so that the tailings or cement mortar accumulates inside the goaf 1;

[0166] When conveying tailings or cement mortar to the inside of goaf 1 for accumulation, mesh 5 is conveyed at intervals, so that the tailings or cement mortar are stacked back and forth with mesh 5 in the middle after solidification, so that mesh 5 plays a connecting role for the solidified tailings or cement mortar, thereby further avoiding the occurrence of cracks and collapse of tailings or cement mortar after solidification, which is beneficial to improve the internal stability of goaf 1 after filling.

[0167] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A medium-deep hole entry filling mining method, characterized in that: The following steps are involved: Step 1: First construct the upper layer rock drilling tunnel and the lower layer mining tunnel, and take the two layers as a mining unit. First, mine the upper layer. The upper layer is mined by drilling and blasting method, and the support form is full-section anchor mesh spraying support; Step 2: When the upper layer rock drilling access is constructed to the designed position, the cutting groove is constructed by drilling and blasting method; Step 3: After the cutting slot is completed, construct the vertical hole, and after the entire access road is filled, proceed to the next access road in the mining order; Step 4: After the two layers are mined, the filling is performed by a filling device; Step 5: After all the upper and lower layers of this mining site are mined and filled, the layers are raised to the upper two layers, and the construction technology is the same as that of the lower layers.

2. A filling device for a medium-long hole access filling mining method, suitable for a medium-long hole access filling mining method according to claim 1, characterized in that: The filling device comprises: A sliding frame (2) is slidably mounted on the top of the goaf (1) via a sliding rail (201); The box body (202) is slidably mounted on the top of the goaf (1) via a slide rail (201) and is detachably connected to the sliding frame (2) via a switching assembly; A driving assembly, installed at the top of the goaf (1), used to drive the box (202) to reciprocate inside the goaf (1); A conveying assembly is installed inside the box (202) and is used to convey tailings or cement mortar after mixing from the outside to the inside of the goaf (1); The mesh laying assembly is installed inside the sliding frame (2) and is used to lay the mesh sheets (5) at intervals when the box (202) moves to transport tailings or cement mortar.

3. The filling device of the medium-long hole entry filling mining method according to claim 2 is characterized in that: The drive assembly comprises: A first motor (301) is fixed to the outside of the goaf (1) via a fixing plate (302); Four synchronous wheels (303) are symmetrically mounted on the top of the inner wall of the goaf (1) and the bottom of the fixed plate (302); A synchronous chain belt (304) is transmission-mounted outside the four synchronous wheels (303); one side of the synchronous chain belt (304) is fixedly connected to the box body (202), and the other side passes through the box body (202).

4. The filling device of the medium-long hole entry filling mining method according to claim 2 is characterized in that: The conveying assembly comprises: Two telescopic chambers (401) are symmetrically arranged on two sides of the box body (202); Two telescopic frames (4) are respectively slidably mounted inside the two telescopic chambers (401); the tops of the two telescopic frames (4) are both provided with a material discharge port (403); the tops of the two telescopic frames (4) are both provided with a material loading port (404); Two groups of first cylinders (402) are installed inside the box (202), and the two groups of first cylinders (402) are respectively used to push the two telescopic frames (4) to move; A conveying inner cavity (405) is provided inside the box body (202), and when the telescopic frame (4) is pushed out, the conveying inner cavity (405) is aligned with the loading port (404); The delivery pipe (406) is installed below the slide rail (201) through a support frame (407) for sliding support. One end of the delivery pipe (406) is connected to the delivery inner cavity (405), and the other end of the delivery pipe (406) is connected to an external tailings or cement mortar pumping mechanism.

5. The filling device of the medium-long hole entry filling mining method according to claim 2 is characterized in that: The web laying assembly comprises: The first inner cavity (501) and the second inner cavity (502) are symmetrically arranged inside the sliding frame (2); A mesh sheet (5) is stacked inside the first inner cavity (501) and the second inner cavity (502); A flip plate (504) flipped and mounted on the side wall of the second inner cavity (502); An auxiliary mechanism is installed inside the sliding frame (2), and one end of the mesh (5) is driven by the auxiliary mechanism to be transported outward. The auxiliary mechanism is also used to drive one end of the mesh (5) to move vertically.

6. The filling device of the medium-long hole entry filling mining method according to claim 5 is characterized in that: The auxiliary mechanism includes: A lifting box (6) is installed inside the sliding frame (2) via a lifting frame (7); Two second transmission rollers (601) are both rotatably mounted inside the lifting box (6); A transmission mechanism is installed on the top of the lifting box (6) and is used to drive the two second transmission rollers (601) to rotate, so that one end of the mesh sheet (5) passes through between the two second transmission rollers (601) and is driven to be transported outward; A plurality of groups of threaded sleeves (704), two of the threaded sleeves (704) form a group, and the threaded sleeves (704) in the same group are symmetrically rotatably mounted on the two ends of the rotating piece of the lifting frame (7); A plurality of bidirectional screw rods (701) are arranged at the middle gap of the rotating piece of the lifting frame (7), and the bidirectional screw rods (701) are threadedly connected to the threaded sleeve (704); The fixing frame (703) and the threaded sleeve (704) of the same group are slidably mounted inside one of the fixing frames (703), and a third motor (702) for driving the bidirectional screw (701) to rotate is fixed at the end of the fixing frame (703).

7. The filling device of the medium-long hole entry filling mining method according to claim 5 is characterized in that: The mesh (5) comprises: A plurality of pipes, the pipes are divided into transverse pipes and longitudinal pipes, the transverse pipes and the longitudinal pipes are cross-connected to form the mesh (5); A plurality of circular holes are respectively opened in a linear array on the side walls of the transverse tube and the longitudinal tube; A plurality of isolation nets (8) are arranged one by one corresponding to the circular holes and fixed inside the corresponding circular holes; A plurality of wax blocks (9) are arranged corresponding to the circular holes one by one and fixed inside the corresponding circular holes.

8. The filling device of the medium-long hole entry filling mining method according to claim 7 is characterized in that: The mesh (5) further comprises: A box body (11) is fixed between the longitudinal tubes and communicated with all the longitudinal tubes; A temperature sensor, installed inside the box body (11), for detecting the temperature inside the mesh (5); A humidity sensor is installed inside the box body (11) and is used to detect the humidity inside the mesh (5).

9. The filling device of the medium-long hole entry filling mining method according to claim 5 is characterized in that: Also includes: A tension scale (13), fixed inside the second inner cavity (502); A clamping claw (1301) is fixed to the bottom of the tension scale (13), and the other end of the mesh sheet (5) is clamped and fixed by the clamping claw (1301); The plug sleeve (1001) and the plug pin (1002) are respectively fixed to the two ends of the mesh sheet (5).

10. The filling device of the medium-long hole entry filling mining method according to claim 2 is characterized in that: The switching component comprises: Two second cylinders (1202) are symmetrically fixed inside mounting grooves opened at two ends of the box body (202); Two limit blocks (1201) are respectively fixed to the ends of the telescopic rods of the two second cylinders (1202); Two limiting grooves (1203) are respectively provided on the side walls of the sliding frame (2) adjacent to the limiting block (1201); the limiting grooves (1203) and the limiting block (1201) are adapted to each other, and the edges of the limiting grooves (1203) and the limiting block (1201) are both provided with inclined surfaces.

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