煤炭工程 ›› 2016, Vol. 48 ›› Issue (7): 86-88.doi: 10.11799/ce201607027

• 研究探讨 • 上一篇    下一篇

超高水充填沿空留巷矿压显现规律研究

赵庆民1,刘晓宁2   

  1. 1. 山东能源淄博矿业集团有限责任公司
    2. 山西安煤矿业设计工程有限公司采矿设计室
  • 收稿日期:2015-04-20 修回日期:2015-05-26 出版日期:2016-07-10 发布日期:2016-07-22
  • 通讯作者: 刘晓宁 E-mail:cumtlxn@foxmail.com

Research on Rules of Mine Pressure for Backfill Mining and Entry Retaining with Superhigh-water Material

  • Received:2015-04-20 Revised:2015-05-26 Online:2016-07-10 Published:2016-07-22

摘要: 结合充填开采留巷的实际情况,对超高水材料充填开采留巷围岩运动及控制机理进行了分析。采用数值模拟采空区充填率为70%、80%、90%的留巷围岩活动规律,得出随着采空区充填率的提高,充填开采留巷围岩应力逐渐降低、围岩变形逐渐减小。针对试验工作面的实际情况进行了包式充填沿空留巷的工程实践,现场实测超高水材料充填开采留巷顶底板移近量在60mm以内、两帮移近量在30mm以内,巷旁包式充填体的支承压力小于2.5MPa,能够实现长时间使用的要求,可为类似地质条件下的超高水充填留巷提供技术参考。

关键词: 超高水材料, 沿空留巷, 矿压显现规律, 包式充填

Abstract: Preliminary analysis of rules and control mechanism of surrouding rock movement of backfill mining and entry retaining with super-high-water material is made combined with the actual application situation of this technology. Adopting numerical simulation to simulate the rules of surrounding rock movement of backfill mining and entry retaining for goaf filling rate of 70%, 80% and 90%, it shows the stress and deformation of surrounding rock decrease reduces with the increase of goaf filling rate.The application in experimental working face has been made that the roof and floor convergence of roadway is within 60 mm, and the deformation of roadway’s sides is within 30 mm in field measurement, the support pressure of bag filling body is less than 2.5MPa, so it can be used for a long time so as to provide technical reference for the similar situation.

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