Hard rock mine mechanized mining filling roadway

Abstract

The utility model relates to the technical field of mining production, in particular to a filling roadway for mechanized mining of a hard rock mine, and aims to solve the problem that the overall efficiency of tunneling mining is affected due to the fact that the roadway is affected by more access roads, lack of a filling return air shaft, short access roads and the like when non-blasting mining is carried out on a non-coal mine by adopting a conventional drilling and blasting mode at present. According to the roadway, the mining filling roadway is arranged, parallel and continuous operation of the roadway is guaranteed, the situation that the mining filling operation position frequently changes along with the drift position is avoided, through air flow is formed through air inlet, air return and the mining filling roadway, the mining length is increased, continuous ore conveying is achieved through the belt conveyor, and the matching degree between mining and conveying is improved; after the mining machine excavates, the filling retaining wall support moves forwards, after the mining machine excavates to the air inlet roadway, the mining machine and the belt conveyor are withdrawn along the mining roadway, meanwhile, the filling retaining wall is built in the filling roadway behind the filling retaining wall support, and therefore rapid and efficient filling operation is achieved.

Description

A mechanized mining backfill roadway for hard rock mines Technical Field

[0001] This utility model relates to the field of mining production technology, specifically to a mechanized mining backfill roadway for hard rock mines. Background Technology

[0002] Currently, most non-coal mines still use the drill-and-blast method for mining and tunneling operations, which generally suffers from low efficiency and high labor intensity. With the continuous advancement of technology, mechanical mining and tunneling equipment suitable for hard rock ore bodies is increasingly being used in non-coal mines. Currently, non-coal mine non-blasting mechanical mining mainly utilizes cantilever roadheaders for access mining, which has several problems with its application. Specifically, non-coal mine roadway mining relies primarily on access mining. When there are many access routes, the roadheader needs to frequently change locations between them, significantly reducing the ore extraction efficiency. Post-mining backfilling operations also require changing backfilling spaces based on the access route location, greatly increasing the difficulty of mining scheduling and management. At the same time, the number and location of backfilling return air shafts in the upper layers of the ore body are relatively fixed. When there are no backfilling return air shafts in the access route, the ventilation effect of access mining is poor, and the working face cannot form a through-flow. In addition, the access route length is relatively short, resulting in frequent changes of the mining working face, which is not conducive to the matching of belt conveyor systems. This leads to low efficiency and discontinuity when using loaders and mine cars to transport ore. Summary of the Invention

[0003] This invention provides a mechanized mining backfill roadway for hard rock mines to solve the problems mentioned above.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A mechanized mining backfill roadway for hard rock mines includes an intake airway and a return airway. A segmented roadway is provided between the intake airway and the return airway. A mining roadway is also provided between the intake airway and the return airway. A backfill roadway is provided between the mining roadway and the segmented roadway. An equipment transfer chamber is provided on the side of the return airway. A backfill retaining wall support is also movably and horizontally connected to the side of the return airway. A backfill baffle is also provided on the side of the backfill roadway.

[0006] Furthermore, a filling return air shaft is provided on one side of the filling air roadway, and an ore chute is provided on the other side of the filling air roadway. An air door is also provided in the return air roadway between the ore chute and the segmented roadway.

[0007] Furthermore, the mining roadway is fixedly equipped with a filling retaining wall on its side, and a belt conveyor is also installed inside the mining roadway.

[0008] Furthermore, the side of the return air tunnel is hinged and fixed with a mounting base for the reverse push-moving frame cylinder and the tensioning frame cylinder, and the piston rods of the reverse push-moving frame cylinder and the tensioning frame cylinder are detachably connected to the filling retaining wall support.

[0009] This utility model has the following beneficial effects:

[0010] This utility model provides a mechanized mining and filling roadway for hard rock mines. By setting up the mining and filling roadway, it ensures parallel and continuous operation, avoids frequent changes in the mining and filling operation position with the approach position, and forms a through-flow through the intake, return, and mining and filling roadways, extending the mining length. Then, a belt conveyor is used to realize continuous ore transportation, improving the coordination between mining and transportation. After the mining machine has finished mining, the filling retaining wall support moves forward. After the mining machine has mined to the intake airway, the mining machine and belt conveyor are withdrawn along the mining roadway. At the same time, a filling retaining wall is constructed in the filling roadway behind the filling retaining wall support, thereby realizing fast and efficient filling operation. This solves the problem that the overall efficiency of tunneling and mining is affected by the large number of approaches, lack of filling and return air shafts, and short approach lengths when using conventional drill and blast methods for non-coal mining without blasting. Attached Figure Description

[0011] Figure 1 is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 is a schematic diagram of the AA cross-section of the overall structure of this utility model.

[0013] The meanings of the reference numerals in the attached figures are as follows:

[0014] 101. Intake airway; 102. Return airway; 103. Mining roadway; 104. Filling roadway; 105. Equipment transfer chamber; 106. Sectional roadway; 107. Filling return air shaft; 108. Ore pass; 201. Ore body; 202. Filling body; 203. Filling retaining wall; 204. Air door; 301. Mining machine; 302. Filling retaining wall support; 303. Belt conveyor; 401. Back-pushing frame cylinder; 402. Tensioning frame cylinder; 403. Filling baffle; 404. Hinge connection point. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0016] As shown in Figures 1-2, a mechanized mining backfill roadway for hard rock mines includes an intake airway 101 and a return airway 102. A segmented roadway 106 is provided between the intake airway 101 and the return airway 102. A mining roadway 103 is provided between the intake airway 101 and the return airway 102. A backfill roadway 104 is provided between the mining roadway 103 and the segmented roadway 106. An equipment transfer chamber 105 is provided on the side of the return airway 102. A backfill retaining wall support 302 is also movably and horizontally connected to the side of the return airway 102. A backfill baffle 403 is also provided on the side of the backfill roadway 104.

[0017] The return air roadway 102 is located on one side of the filling roadway 104 and has a filling return air shaft 107. The return air roadway 102 is located on the other side of the filling roadway 104 and has an ore chute 108. An air door 204 is also provided in the return air roadway 102 between the ore chute 108 and the segment roadway 106.

[0018] A filling retaining wall 203 is fixedly installed on the side of the mining roadway 103, and a belt conveyor 303 is also installed inside the mining roadway 103.

[0019] The side of the return airway 102 is hinged and fixed with a fixed seat for the reverse push moving frame cylinder 401 and the tension moving frame cylinder 402, and the piston rods of the reverse push moving frame cylinder 401 and the tension moving frame cylinder 402 are detachably connected to the filling retaining wall support 302.

[0020] The intake airway 101 and return airway 102 are excavated into the ore body 201 from the surrounding rock, perpendicular to the ore body 201. After entering the ore body 201, the mining roadway 103 is excavated between the intake airway 101 and the return airway 102. The equipment transfer chamber 105 is excavated on the side of the mining roadway 103 near the return airway 102. The equipment transfer chamber 105 is mainly used by the mobile roller cutter hard rock mining machine 301 to cut the ore body 201 at one end of the return airway 102 in the equipment transfer chamber 105 after mining is completed, forming a new mining face.

[0021] The intake airway 101 and return airway 102 are excavated parallel to the ore body 201 from the segmented airway 106 outside the ore body 201. When there is only one intake airway segmented airway 106, both the intake airway 101 and return airway 102 are excavated from the segmented airway 106 to the ore body 201. The return airway 102 passes through the pre-reserved filling return air shaft 107 of the previous layer. After the mining roadway 103 is formed, the return airway 102 and the segmented airway 106 are connected. Two air doors are set between 06. When there are two segmented roadways 106, namely one intake roadway 106 and one return roadway 106, the intake roadway 101 and the return roadway 102 are excavated from the intake roadway 106 and the return roadway 102 to the ore body 201 respectively. At this time, the position of the return roadway 102 is not restricted by the position of the upper layer filling return air shaft 107. An ore chute 108 is set on one side of the return air roadway 102.

[0022] The filling retaining wall support 302 is arranged in the mining roadway 103. A mobile roller cutter hard rock mining machine 301 and a telescopic belt conveyor 303 are arranged below the filling retaining wall support 302. A telescopic belt conveyor 303 is also installed in the return air roadway 102 to transfer ore 201 to the ore pass 108.

[0023] The filling retaining wall support 302 is an improved version of the support shield support. The base is equipped with a reverse push moving frame cylinder 401 and a tension moving frame cylinder 402. The reverse push moving frame cylinder 401 pushes the filling body 202 on one side of the filling roadway 104 to move the filling retaining wall support 302 forward. After the tension moving frame cylinder 402 extends forward, it is fixed in the middle of the hard rock mining machine 301. After the tension moving frame cylinder 402 retracts, it moves the filling retaining wall support 302 forward.

[0024] A filling baffle 403 is provided at the tail of the filling retaining wall support 302. Its height is the same as that of the mining roadway 103 and the filling roadway 104. The bottom of the filling baffle 403 is hinged to the base of the filling retaining wall support 302.

[0025] In practical application, the mobile rotary cutter hard rock mining machine 301 enters the equipment transfer chamber 105 from the return airway 102, and mines the ore body 201 in the parallel mining roadway 103. The ore body 201 is loaded onto the tail section of the hard rock mining machine 301 and then transferred to the belt conveyor 303 in the return airway 102 via a telescopic belt conveyor 303 before being transported out of the mining area. After the hard rock mining machine 301 has finished mining, the filling retaining wall support 302 moves forward. After the hard rock mining machine 301 reaches the intake airway 101, it retracts along the mining roadway 103 along with the telescopic belt conveyor 301. Simultaneously, filling retaining walls 203 are constructed at both ends of the filling roadway 104 behind the filling retaining wall support 302, thus completing the filling operation. In one step, after the hard rock mining machine 301 has finished mining, when the filling retaining wall support 302 moves forward, the filling retaining wall support 302 lowers its height, and at the same time the filling baffle 403 tilts towards the filling roadway 104 and lowers its height. When the hard rock mining machine 301 is mining, a filling retaining wall 203 is set between the filling retaining wall support 302 and the filling body 202 on one side of the return air roadway 102. Depending on the length of the filling roadway 104, a stage filling retaining wall 203 is set in the filling roadway 104 and filled in sections, or a filling retaining wall 203 is set on one side of the intake air roadway 101 and filled all at once. In order to prevent the filling material from leaking from between the filling baffles 403 of the filling retaining wall support 302, a leak-proof filter cloth material should be laid along the filling baffles 403 before filling.

Claims

1. A mechanized mining backfill roadway for hard rock mines, comprising an intake airway (101) and a return airway (102), wherein a segmented roadway (106) is provided between the intake airway (101) and the return airway (102), characterized in that: A mining roadway (103) is provided between the intake roadway (101) and the return roadway (102). A filling roadway (104) is provided between the mining roadway (103) and the segmented roadway (106). An equipment transfer chamber (105) is provided on the side of the return roadway (102). A filling retaining wall support (302) is also movably and horizontally connected to the side of the return roadway (102). A filling baffle (403) is also provided on the side of the filling roadway (104).

2. A mechanized mining and filling roadway for hard rock mines according to claim 1, characterized in that: The return air roadway (102) is located on one side of the filling roadway (104) and has a filling return air shaft (107). The return air roadway (102) is located on the other side of the filling roadway (104) and has an ore chute (108). An air door (204) is also provided in the return air roadway (102) between the ore chute (108) and the segmented roadway (106).

3. The mechanized mining backfill roadway for hard rock mines according to claim 1, characterized in that: The side of the mining roadway (103) is fixedly equipped with a filling retaining wall (203), and a belt conveyor (303) is also provided inside the mining roadway (103).

4. A mechanized mining and filling roadway for hard rock mines according to claim 2, characterized in that: The side of the return airway (102) is hinged and fixed with the mounting bases of the reverse push-moving frame cylinder (401) and the stretching frame cylinder (402), and the piston rods of the reverse push-moving frame cylinder (401) and the stretching frame cylinder (402) are detachably connected to the filling retaining wall support (302).

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