刀柱式采空区遗留资源长壁综放复采关键技术及应用

doi:10.11799/ce202604003

煤炭工程 ›› 2026, Vol. 58 ›› Issue (4): 19-25.doi: 10.11799/ce202604003

刀柱式采空区遗留资源长壁综放复采关键技术及应用

袁光明，张学亮

1. 重庆工程职业技术学院，重庆 402260
2. 煤炭工业规划设计研究院有限公司，北京 100120

收稿日期:2025-04-17 修回日期:2025-06-25 出版日期:2026-04-10 发布日期:2026-05-12
通讯作者: 张学亮 E-mail:zhang123xp@aliyun.com

Key technology and application of longwall top coal caving re-mining for residual resources in wedge pillar goaf #br#

Received:2025-04-17 Revised:2025-06-25 Online:2026-04-10 Published:2026-05-12

摘要/Abstract

摘要：

针对刀柱式采空区遗留资源赋存情况不明、安全高效回收难度大的技术现状，以晋城矿区大桥矿为工程背景，系统研究了刀柱式采空区遗留资源长壁综放复采技术的适应性。首先，分析了单个刀柱的强度-尺寸效应，构建了刀柱式采空区煤柱群-顶板力学模型，研究了煤柱群-顶板系统的整体稳定性；其次，基于刀柱采空区遗留资源赋存特征探测分析，明确了复采工作面直接顶为散体结构、基本顶为块体结构，支架-围岩相互作用关系属于给定载荷状态，并据此构建了块体-散体顶板条件下的支护强度计算模型。现场回采验证表明，支架工作阻力满足回采要求，与理论计算相吻合；矿压显现整体可控，瓦斯非均衡涌出处于安全范围内，工作面资源回收率达到93.4%。研究结果验证了所提技术的合理性与科学性，可为同类刀柱采空区复采提供技术借鉴。

关键词:

刀柱式采空区, 复采, 煤柱稳定性, 矿压显现, 弱胶结顶板, 围岩控制

Abstract:

In response to the unclear situation of residual resources in the goaf of the Daqiao mine and the difficulty of safe and efficient recovery, this paper studied the adaptability of longwall fully mechanized mining of residual resources in the goaf of the Daqiao mine. The strength size effect of a single cutting column was analyzed, and a mechanical model of the coal column group roof system in the goaf was constructed. The stability of the entire coal column group roof system in the goaf of the Daqiao mine was studied; Based on the detection and analysis of coal seam characteristics, it is believed that the top of the double mining face in the goaf of the cutter column is a loose structure, and the basic top is a block structure. The interaction relationship between the support and the surrounding rock belongs to the given load state. A calculation model for the support strength under the action of the block loose roof is constructed; On site mining verification shows that the working resistance of the support meets the needs of mining, which is consistent with theoretical calculations. The mining pressure is controllable, and the gas emission is within a safe range. The resource recovery rate of the working face has reached 93.4%, verifying its rationality and scientificity.

中图分类号:

TD823

袁光明, 张学亮.

刀柱式采空区遗留资源长壁综放复采关键技术及应用 [J]. 煤炭工程, 2026, 58(4): 19-25.

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刀柱式采空区遗留资源长壁综放复采关键技术及应用

Key technology and application of longwall top coal caving re-mining for residual resources in wedge pillar goaf #br#

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