一种高大采空区内存窿矿的膏体预固结回收方法

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CN116498321BActive Publication Date: 2026-07-17UNIV OF SCI & TECH BEIJING +1

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner: UNIV OF SCI & TECH BEIJING
Filing Date: 2023-05-26
Publication Date: 2026-07-17

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Abstract

本发明提供一种高大采空区内存窿矿的膏体预固结回收方法，属于采矿技术领域。该方法将每个中段的存窿矿石回收至不可出后，随下一中段顶柱崩落至下一中段，直到下放至下部有15～20m安全厚度来布置辅助工程的存窿堆放层，在存窿矿石上部采空区充填低强度膏体料浆，充填至存窿矿石边界最高点附近，当低强度膏体料浆固结后，再充填20～30m安全厚度的高强度膏体料浆，将上部采空区与存窿矿进行分割，然后在存窿矿堆下部的矿柱内施工出矿堑沟，对存窿矿石由中间向两侧后退式回收，最后对矿柱采用后退式回收或进路式充填回收。本发明最大程度地回收了矿产资源，保证了矿房回采作业的安全性，对高大采空区进行了有效治理，防止了地表塌陷，具有多方面的突出优势。

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