煤炭工程 ›› 2015, Vol. 47 ›› Issue (9): 65-67.doi: 10.11799/ce201509022

• 生产技术 • 上一篇    下一篇

任楼矿Ⅱ5112工作面压架原因分析及防治措施

卢振龙   

  1. 天地科技股份有限公司开采设计事业部采矿技术研究所
  • 收稿日期:2015-05-18 修回日期:2015-08-03 出版日期:2015-09-11 发布日期:2015-10-09
  • 通讯作者: 卢振龙 E-mail:flyingdragon.lu@163.com

The reason analysis and prevention of support break-off at Ⅱ5112 working face in Renlou coal mine

  • Received:2015-05-18 Revised:2015-08-03 Online:2015-09-11 Published:2015-10-09

摘要: 针对皖北煤电任楼矿Ⅱ5112工作面顶板含水条件下,工作面在过地质构造区域发生大范围压架的问题,采用现场实测、理论分析等方法,分析得到了工作面发生压架的7个原因:顶板粉砂岩厚度增加、地质条件复杂、采高较低(1.2~1.5m)、管理不到位、安全阀开启值设定不合理、顶板含水推进速度慢。研究采取了控制采高至1.8~2.0m,支架安全阀开启值调整至38.3MPa,周期来压期间加快推进度至3.5m以上,加强矿压和水文观测数据分析及预警,加强现场管理等措施。实践表明,初撑力水平提高至24~26MPa,顶板下沉量减少了5~10cm,顶板控制效果显著,压架事故得到有效遏制。

关键词: 压架, 综采工作面, 防治措施, 顶板控制

Abstract: Ⅱ5112 working face of RenLou Coal Mine in Wanbei Coal and Electricity Corporation was under roof water conditions,when it reached the geologicstructure area,a large range of support break-off accidents occured.To this problem,the paper use the field measurement and theoretical analysis to find out the reasons about support break-off,as follows:the thickness increase of roof siltstone,the complex geological conditions,the low mining height(1.2-1.5m),the ineffective management,the unreasonable set pressure of safety valves,and the slow pushing velocity.By means of the theory and practice, it put forwards a series of measures that managers in coalmine should strengthen the management in face,develop the mine pressure and water level monitoring early-warning,and carray out the reasonable control of the working face mining height.

Key words: support break-off, fully-mechanized face, prevention measures

中图分类号: