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Upward spacing admission passage filling mining method

A technology of approach filling and mining method, which is applied in the direction of filling, ground mining, mining equipment, etc., and can solve problems such as stope mining work interruption, restriction, and reduction of ore block production capacity

Inactive Publication Date: 2005-11-09
HEBEI HAN XING INST OF MINE & METALLURGY DESIGN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the first stage of cement filling and maintenance takes a long time, the stope mining work is interrupted and the production capacity of ore blocks is reduced, which limits the application of this method

Method used

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  • Upward spacing admission passage filling mining method
  • Upward spacing admission passage filling mining method
  • Upward spacing admission passage filling mining method

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Embodiment Construction

[0028] Supporting is undoubtedly required to excavate roadways in unstable ore bodies for mining operations. The support of the first phase recovery approach is temporary. When the primary cemented filling is completed, the role of temporary support will disappear. Temporary support is helpless waste. In order to avoid this waste, it should be considered that the primary support can be utilized by the primary filling.

[0029] The present invention also needs to carry out necessary support in order to ensure the safety of the first-phase mining operation. There are various support methods, building walls and setting up sheds is a simple and practical support method, and can be a part of the first-stage filling. With the formation of the first-stage mining approach, walls and roofs were built on its two sides. In the first phase of goaf, cemented filling is not used, but dry filling is adopted. The wall and the filling in the wall form the filling body, which supports the ...

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Abstract

This invention discloses an upward spacing admission passage filling mining method. Its feature is that horizontal working type and dry filling are used in this method. The horizontal working type is that filling and coal winning work horizontal. When first period filled is back working, the second extracting route from the other end of the ore block. When second dry filling is backing to the other end of the block, the first extracting route of up layer is route from the other end of the block. Or first period filled is back working, the firs period of up layer extracting drift tailgate from the other end of the ore block. When up layer first dry filling is backing to the other end of the block, the second extracting route of up layer is route from the other end of the block. The first dry type filling is that supporting wall is built on two side of the route, steel dropper is pre-buried and filling is consolidated from inner part. Productive capacity can be increased by using this invention, filling cost can be reduced, and back production safety can be ensured. It is propitious to the mine of unstable ore and rock, low ore value and large productive capacity.

Description

technical field [0001] The invention relates to the design of an underground mining method, which is an improvement of the upward interval filling method. Background technique [0002] The upward interval approach filling method is a mining method that starts from the bottom up and uses multiple roadways to extract and fill at intervals. The recovery work is divided into two phases. The first-stage mining is carried out under the protection of the adjacent unmined approach as the ore pillar; the second-stage mining is carried out under the protection of the filling body formed by the filled first-stage mining approach (mined-out area) . [0003] Due to the low height of the goaf formed by the mining approach, the exposed area of ​​the roof is small, which can effectively ensure the safety of the mining operation; the mining with multiple roadways has a large production capacity; the strength of the filling body is not very high, so the filling cost It is relatively low; t...

Claims

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Application Information

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IPC IPC(8): E21C41/16
Inventor 苗刚
Owner HEBEI HAN XING INST OF MINE & METALLURGY DESIGN
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