Stability evaluation and protection technology of waterproof segment pillar with fully-mechanized caving of ultra-thick coal seam

HE Tuan; MAO De-binge; HUANG Zhi-zeng; SUN Xiao-dong; ZHANG Xue-liang

doi:10.16285/j.rsm.2017.04.028

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Stability evaluation and protection technology of waterproof segment pillar with fully-mechanized caving of ultra-thick coal seam

更新时间：2026-06-25

- Stability evaluation and protection technology of waterproof segment pillar with fully-mechanized caving of ultra-thick coal seam
- Vol. 38, Issue 4, Pages: 1148-1153(2017)
- 作者机构：
  
  1. 天地科技股份有限公司开采设计事业部
  2. 煤炭科学研究总院开采设计分院
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2017.04.028
  CLC： TD822.3
- Published：2017
- 稿件说明：
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[1]何团,毛德兵,黄志增,孙晓冬,张学亮.特厚煤层区段防水煤柱稳定性评价及保护技术研究[J].岩土力学,2017,38(04):1148-1153.

HE Tuan, MAO De-binge, HUANG Zhi-zeng, et al. Stability evaluation and protection technology of waterproof segment pillar with fully-mechanized caving of ultra-thick coal seam[J]. 2017, 38(4): 1148-1153.
[1]何团,毛德兵,黄志增,孙晓冬,张学亮.特厚煤层区段防水煤柱稳定性评价及保护技术研究[J].岩土力学,2017,38(04):1148-1153. DOI： 10.16285/j.rsm.2017.04.028.

HE Tuan, MAO De-binge, HUANG Zhi-zeng, et al. Stability evaluation and protection technology of waterproof segment pillar with fully-mechanized caving of ultra-thick coal seam[J]. 2017, 38(4): 1148-1153. DOI： 10.16285/j.rsm.2017.04.028.

摘要

留设合理宽度的区段煤柱是确保特厚煤层综放工作面顺利接续和安全回采的关键。为确保芦子沟煤矿3107特厚煤层综放工作面仰斜开采过程中

双侧采空煤柱能够稳定承载并有效隔水

分析区段煤柱覆岩结构特征

建立区段煤柱应力计算模型

理论计算了双侧采空煤柱应力

结合数值模拟及理论分析手段对煤柱稳定性进行综合评价。通过实施科学合理的深孔爆破切缝卸压方案

降低了3107工作面采动应力对煤柱的影响

优化了煤柱应力环境

提高了煤柱稳定性

保证了3107工作面的安全回采。研究结果对类似开采条件下的区段煤柱宽度确定及坚硬顶板条件下煤柱卸压具有一定意义。

Abstract

It is the key to ensure smooth connection and safe mining of fully-mechanized top coal caving face by setting a reasonable segment pillar width.To guarantee the stability and effective water resisting capacity of bilateral segment pillar

an analytical model is established to calculate pillar stress.Pillar stability is assessed by means of numerical simulation and a borehole camera.The reasonable scheme of cutting top blasting successfully reduces the effect of mining-induced stress on the pillars in the vicinity of the3107 working face

accomplishes pillar stress optimization

and ensures safe mining.The study has a certain significance for determining the width of coal pillar and stress release of segment pillar with hard roof under similar mining conditions.

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