Stope structure of triangular ore body under inclined stope for stoping perpendicular to ore body trend

Abstract

The utility model discloses a stope structure of a triangular ore body under an inclined stope for stoping perpendicular to the ore body trend, and relates to the technical field of mining, the stope structure comprises an ore body stope, the ore body stope is provided with a plurality of rock drilling roadways, the bottommost layer of the ore body stope is provided with an ore removal access road, the tail end of each rock drilling roadway is provided with a cutting gate way, and the cutting gate way is provided with a plurality of rock drilling roadways. Each cutting roadway is provided with a cutting raise, the cutting roadways are communicated with the rock drilling roadway through the cutting raise, a filling air return roadway is further arranged between the cutting raise and the rock drilling roadway, and the cutting raise is provided with a lower triangular ore block. According to the utility model, the fine mining of the stope along the upper and lower boundary lines of the ore body can be realized, the other ore bodies can be mined except the peach-shaped ore pillars which are arranged for the ore removal roadway in a layering manner at the bottom, and the surrounding rock waste rocks are not mixed theoretically, so that the effects of zero dilution and low loss are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mining, in particular to a mining field structure of a triangular ore body under an inclined mining field for mining vertically to the ore body direction. Background Art

[0002] When grooving at the end of the mining area, the upper part of the cutting shaft is located on the upper wall of the ore body, and penetrates the ore body and surrounding rock for mining the upper triangular block. The drilling height is equal to the boundary between the ore body and the surrounding rock. The lower wall adopts positive row drilling and blasting with the same segment height to improve the recovery rate of the ore.

[0003] However, in the process of implementing the above technical solutions, it was found that there are at least the following technical problems: in the prior art, although the recovery rate has been considered to be improved, the ore depletion rate has not been reduced, and a method with low engineering investment to simultaneously reduce the ore depletion rate and loss rate has not been found. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a mining field structure of a triangular ore body under an inclined mining field with a vertical ore body direction for mining, which solves the technical problem that although the prior art has considered improving the recovery rate, it has failed to reduce the ore depletion rate, and has also failed to find a method with low engineering investment to simultaneously reduce the ore depletion rate and loss rate.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A mining structure of a lower triangular ore body in an inclined mining area for mining in a vertical direction of the ore body, comprising an ore body mining area, wherein a plurality of rock drilling tunnels are opened in the ore body mining area, a mine exit route is arranged at the lowest layer of the ore body mining area, a cutting level tunnel is opened at the end of each rock drilling tunnel, each cutting level tunnel is opened with a cutting skylight, the cutting level tunnels are connected to the rock drilling tunnels through the cutting skylight, a filling return air tunnel is also opened between the cutting skylight and the rock drilling tunnel, a lower triangular ore block is arranged on the cutting skylight, a drill hole is arranged on the lower triangular ore block, a cutting groove is blasted on the cutting skylight, and the ore is discharged from the ore body mining area through the mine exit route.

[0007] Preferably, the cutting patios located below and above are staggered, and each of the cutting patios is distributed at both ends of the cutting lane.

[0008] Preferably, each of the rock drilling tunnels is provided with an upper triangular ore block, and each of the rock drilling tunnels is provided with a stope upper wall boundary.

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

[0010] 1. In the above mining method, a cutting groove is first formed in the triangular ore block of the lower plate by cutting the skylight, and then a free surface is created for positive row blasting by collapsing the triangular ore block of the lower plate. Compared with first forming the cutting groove along the direction of the ore body for positive row blasting, the time for forming the cutting groove is reduced and the production capacity is improved.

[0011] 2. The above mining method can realize the refined mining of the ore body along the upper and lower boundary lines of the ore body. Except for the peach-shaped ore pillars left in the bottom layer for the mining tunnel, the rest of the ore body can be mined, and in theory, no surrounding rock waste rock can be mixed in, achieving the effect of zero depletion and low loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0013] Figure 1 This is the stope structure layout diagram of the utility model;

[0014] Figure 2 This is the structural diagram of the lower triangular ore block of the utility model;

[0015] Figure 3 This is the front view of the lower triangular ore block of the utility model;

[0016] Figure 4 This is the plan view of the lower triangular ore block of the utility model;

[0017] Figure 5 This is a drilling distribution structure diagram of the utility model.

[0018] Legend: 1. Rock drilling tunnel; 2. Cutting shaft; 3. Cutting level tunnel; 4. Mine exit route; 5. Filling return air tunnel; 6. Lower triangular ore block; 7. Drilling hole; 8. Cutting groove; 9. Upper triangular ore block; 10. Boundary of the upper wall of the mining area. DETAILED DESCRIPTION

[0019] The embodiment of the present application provides a mining field structure of a triangular ore body in an inclined mining field for mining perpendicular to the direction of the ore body, which effectively solves the technical problem in the prior art that, although the improvement of the recovery rate has been considered, the ore depletion rate has not been reduced, and a method with low engineering investment to simultaneously reduce the ore depletion rate and the loss rate has not been found. In the mining method of the present application, a cutting groove 8 is first formed in the triangular ore block in the lower plate by cutting the shaft 2, and then a free surface is created for positive blasting by collapsing the triangular ore block in the lower plate. Compared with first forming the cutting groove 8 along the direction of the ore body for positive blasting, the time for forming the cutting groove 8 is reduced and the production capacity is improved. Example

[0020] like Figure 1-5 The technical solution in the embodiment of the present application is to effectively solve the technical problem that, although the prior art considers improving the recovery rate, it fails to reduce the ore depletion rate, and fails to find a method with low engineering investment to simultaneously reduce the ore depletion rate and loss rate. The overall idea is as follows: a mining field structure of a triangular ore body under an inclined mining field with a vertical ore body strike recovery, including an ore body mining field, a plurality of rock drilling tunnels 1 are opened in the ore body mining field, a mine access road 4 is provided at the bottom layer of the ore body mining field, a cutting level tunnel 3 is opened at the end of each rock drilling tunnel 1, and each A cutting shaft 2 is opened in each cutting tunnel 3, and the cutting tunnel 3 is connected with the rock drilling tunnel 1 through the cutting shaft 2. When mining is carried out, after the stope is divided along the vertical ore body direction, the stope is divided into layers, and a rock drilling tunnel 1 is excavated in each layer along the vertical ore body direction, and then a mine exit route 4 is arranged at the lowest layer of the stope according to the bucket turning radius of the mining shovel to prepare for mining, and a cutting tunnel 3 is excavated at the end of each layer rock drilling tunnel 1, and each layer cutting tunnel 3 excavates a cutting shaft 2 to lead to the rock drilling tunnel 1 of the previous layer;

[0021] A filling return air lane 5 is also provided between the cutting rise 2 and the rock drilling roadway 1. If the cutting rise 2 fails to align with the rock drilling roadway 1 of the previous layer, the filling return air lane 5 is excavated to connect the cutting rise 2 and the rock drilling roadway 1;

[0022] A lower triangular block 6 is provided on the cutting rise 2, a drill hole 7 is provided on the lower triangular block 6, a cutting groove 8 is blasted on the cutting rise 2, upward fan-shaped drill holes 7 are arranged in the lower triangular block 6 along the cutting level road 3 based on the formed cutting rise 2, the first row of drill holes 7 are blasted using the cutting rise 2 as a free surface and compensation space to form the cutting groove 8, the lower triangular block 6 is mined using the cutting groove 8 as a free surface and compensation space, and then the space formed by the mining of the lower triangular block 6 is used to perform backward mining along the rock drilling roadway 1 by forward discharge blasting, and the ore is mined through the mining access road 4;

[0023] The ore body mining field is mined through the mining access road 4, and the cutting skylights 2 located below and above are staggered. Each cutting skylight 2 is distributed at both ends of the cutting level tunnel 3. An upper triangular ore block 9 is provided on each rock drilling tunnel 1. A stope upper plate boundary 10 is provided on each rock drilling tunnel 1. The lowest cutting skylight 2 and the upper cutting skylight 2 are staggered in the horizontal direction and are distributed at both ends of the cutting level tunnel 3. When the cutting skylight 2 can connect the upper and lower rock drilling tunnels 1, the filling return air tunnel 5 may not be provided. When the cutting skylight 2 cannot directly connect the upper and lower rock drilling tunnels 1, a filling return air tunnel 5 is required on the upper The return air tunnel 5 is filled by layered excavation, and the construction of the cutting groove 8 is carried out in sections from the uppermost section to the lower section; the cutting shaft 2 is used as a free surface and compensation space, and the boreholes 7 are divided into multiple groups according to the number and blasting volume. Segmented delayed detonation is set between the groups, and the cutting groove 8 is formed by multiple segmented detonations. After each blasting, the slag is removed by a forklift and transported out through the cutting level tunnel 3 and the rock drilling tunnel 1. The cutting groove 8 is used as a free surface, and the multiple rows of boreholes 7 in the lower triangular block 6 are divided into several groups for multiple blasting. The rows of boreholes 7 in the group are blasted with segmented delay, and the blasting order is from the end close to the cutting shaft 2 to the other end of the cutting shaft 2.

[0024] In view of the problems existing in the prior art, the utility model provides a mining field structure of a triangular ore body in an inclined mining field for mining vertically in the direction of the ore body. In the mining method of the present application, a cutting groove 8 is first formed in the triangular ore block in the lower plate by cutting a shaft 2, and then a free surface is created for positive blasting by collapsing the triangular ore block in the lower plate. Compared with first forming the cutting groove 8 along the direction of the ore body for positive blasting, the time for forming the cutting groove 8 is reduced and the production capacity is improved.

[0025] Working principle:

[0026] When mining is carried out, after the mining field is divided along the vertical ore body strike, the mining field is divided into layers, and a rock drilling tunnel 1 is excavated in each layer along the vertical ore body strike direction, and then a mining access road 4 is arranged in the lowest layer of the mining field according to the bucket turning radius of the mining shovel to prepare for mining, and a cutting level tunnel 3 is excavated at the end of each layer rock drilling tunnel 1, and each layer cutting level tunnel 3 excavates a cutting shaft 2 to lead to the rock drilling tunnel 1 of the previous layer. If the cutting shaft 2 fails to align with the rock drilling tunnel 1 of the previous layer, the excavation filling return air tunnel 5 is connected through, and based on the formed cutting shaft 2, upward fan-shaped drill holes 7 are arranged in the lower triangular ore block 6 along the cutting level tunnel 3, and the first row of drill holes 7 are blasted using the cutting shaft 2 as a free surface and compensation space to form a cutting groove 8, and the lower triangular ore block 6 is mined using the cutting groove 8 as a free surface and compensation space, and then the space formed by the mining of the lower triangular ore block 6 is used to recover the lower triangular ore block 6 through the forward discharge blasting backward mining along the rock drilling tunnel 1, and the ore is discharged through the mining access road 4;

[0027] The lowermost cutting shaft 2 and the upper cutting shaft 2 are arranged in a staggered manner in the horizontal direction and are distributed at the two ends of the cutting level tunnel 3. When the cutting shaft 2 can connect the upper and lower rock drilling tunnels 1, the filling return air tunnel 5 may not be set. When the cutting shaft 2 cannot directly connect the upper and lower rock drilling tunnels 1, it is necessary to dig and fill the return air tunnel 5 in the upper layer. The cutting groove 8 is constructed from the uppermost section to the lower section. The cutting shaft 2 is used as a free surface and compensation space. The boreholes 7 are divided into multiple groups according to the number and blasting volume. Segmented delayed detonation is set between the groups. The cutting groove 8 is formed by multiple segmented detonations. After each blasting, the slag is discharged by a forklift and transported out through the cutting level tunnel 3 and the rock drilling tunnel 1. The cutting groove 8 is used as a free surface to classify the multiple rows of boreholes 7 in the lower triangular block 6 into several groups for multiple blasting. The rows of boreholes 7 in the group are blasted with segmented delayed detonation. The blasting sequence is from the end close to the cutting shaft 2 to the other end of the cutting shaft 2.

[0028] After each blasting, the ore is transported out through the cutting level tunnel 3 and the rock drilling tunnel 1 by a forklift, and the free surface generated by the mining of the lower triangular block 6 is utilized to mine from the upper layer to the lower layer. By drilling fan-shaped drill holes 7 in the rock drilling tunnel 1, the ore is mined backwards from the inside to the outside from the free surface generated by the mining of the lower triangular block 6. The internal ore is transported out through the mine exit route 4 and the adjacent rock drilling tunnel 1, and fan-shaped drill holes 7 are drilled along the rock drilling tunnel 1 starting from the adjacent cutting groove 8. When the above-mentioned rock drilling tunnel 1 enters the upper triangular block 9 of the mining area, the drill hole 7 is only close to the upper wall boundary 10 of the mining area.

[0029] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A stope structure of a triangular ore body under an inclined stope for mining vertically along the ore body, comprising an ore body stope, characterized in that: The ore body mining field is provided with a plurality of rock drilling tunnels (1), and a mine exit access (4) is provided at the lowest layer of the ore body mining field; Wherein, a cutting tunnel (3) is provided at the end of each rock drilling tunnel (1), and each cutting tunnel (3) is provided with a cutting skylight (2), and the cutting tunnel (3) is connected to the rock drilling tunnel (1) via the cutting skylight (2).

2. The stope structure of a triangular ore body under an inclined stope for vertical ore body recovery as claimed in claim 1, characterized in that: A filling return air lane (5) is also provided between the cutting skylight (2) and the rock drilling lane (1); Wherein, a lower triangular ore block (6) is provided on the cutting skylight (2).

3. The stope structure of a triangular ore body under an inclined stope for vertical ore body recovery as claimed in claim 2, characterized in that: The lower triangular ore block (6) is provided with a drill hole (7); Wherein, a cutting groove (8) is blasted on the cutting skylight (2).

4. The stope structure of a triangular ore body under an inclined stope for vertical ore body recovery as claimed in claim 3, characterized in that: The ore body mining field is used to mine the ore through a mining access road (4).

5. The stope structure of a triangular ore body under an inclined stope for vertical ore body recovery as claimed in claim 4, characterized in that: The cutting shafts (2) located below and above are staggered, and each of the cutting shafts (2) is distributed at both ends of the cutting lane (3).

6. The stope structure of a triangular ore body under an inclined stope for vertical ore body recovery as claimed in claim 5, characterized in that: Each of the rock drilling tunnels (1) is provided with an upper triangular ore block (9), and each of the rock drilling tunnels (1) is provided with a stope upper wall boundary (10).

Images