Pre-set space filling mining method without top column and bottom column

Abstract

The invention discloses a pre-set space filling mining method without a top column and a bottom column. In the pre-set space filling mining method, the self-bearing capability of top and bottom plates and a surrounding rock is sufficiently utilized, and a filling manner of a pre-set space is used for filling a goaf in an allowable exposure area range of a stope; after the recovery of the stope is finished, a bottom structure is recycled immediately and high-strength concrete filling materials are used for filling a bottom plate region to be used as an artificial top column for exploiting an ore body of a next middle section; a barren rock cementing filling material is used for filling the goaf; the filling height and the filling volume are determined according to actual conditions of a goaf shape and the surrounding rock stability; the pre-set space and the goaf are in an incomplete top tight filling state. The pre-set space filling mining method is particularly suitable for mining underground mines by adopting the filling mining method under the conditions that raw materials are lacked or the raw materials are in short supply, and has the characteristics of being safe to work, high in production efficiency, low in ore loss, low in mining cost and the like.

Description

technical field [0001] The invention relates to a filling mining method for underground mines, in particular to a filling mining method without leaving a preset space for top and bottom pillars, which is suitable for the lack of filling materials or insufficient supply of underground mines, and the roof and floor of the ore body are relatively stable. Mining of inclined or sharply inclined ore bodies. Background technique [0002] The filling mining method can effectively solve the problems of goaf treatment and ground pressure management in underground mines, and provides a guarantee for safe mining in mines. High disadvantages reduce the economic benefits of mines, especially some mines are facing a lack of filling raw materials, which leads to a delay or stop of filling work, so that the goaf cannot be filled in time, which not only affects the smooth mining of adjacent ore bodies, but also affects the safety of mines. Production has left a major safety hazard. Content...

AI Technical Summary

Problems solved by technology

[0002] The filling mining method can effectively solve the problems of goaf treatment and ground pressure management in underground mines, and provides a guarantee for safe mining in mines. High disadvantages reduce the economic benefits of mines, especially some mines are facing a lack of filling raw materials, which leads to a delay or stop of filling work, so that the goaf cannot be filled in time, which not only affects the smooth mining of adjacent ore bodies, but also affects the safety of mines. Production has left a major safety hazard

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