煤炭工程 ›› 2013, Vol. 45 ›› Issue (10): 80-82.doi: 10.11799/ce201310027

• 研究探讨 • 上一篇    下一篇

大柳塔煤矿52304综采面过沟谷地形矿压显现实测

高浩然,朱卫兵,王路军,鞠金峰,张文柯   

  1. 中国矿业大学(徐州)
  • 收稿日期:2012-10-13 修回日期:2012-12-01 出版日期:2013-10-10 发布日期:2013-10-24
  • 通讯作者: 高浩然 E-mail:ghr200@163.com

In situ measurement on ground pressure behaviors of Full Mechanized Working Face crossing gully terrain in Daliuta Mine

  • Received:2012-10-13 Revised:2012-12-01 Online:2013-10-10 Published:2013-10-24

摘要:

针对大柳塔煤矿5-2煤三盘区 7m大采高首采面过沟谷地形时是否发生动载矿压的问题,采用关键层位置判别方法对52304综采面过沟谷地形阶段的主关键层位置进行了判别,结果表明过沟谷地形阶段的主关键层未被侵蚀,其较完整且距5-2煤层较远,预计不会发生动载矿压,并得到实际开采的验证。实测结果表明:52304工作面过沟谷地形上坡段时周期来压步距平均为13.97m,支架循环末阻力平均16723kN,动载系数1.51,矿压显现正常。

关键词: 沟谷地形, 大采高, 关键层, 矿压显现

Abstract:

According to the problem of the strong ground pressure behaviors will or will not appear when 7m mining height Working Face crossing gully terrain in Daliuta Mine, Key Strata Position discriminant method was adopted, the result show that in the gully terrain area the primary key stratum was not eroded, its integrated and far from 5-2 coal seam. It predict that strong ground pressure behaviors will not appear and for the verification of the actual mining. The In situ measurement result show that during the Working Face crossing the uphill of gully terrain the average periodic weighting length is 13.97m, average cycle end support resistant is 16723kN, dynamic load coefficient is 1.51, ground pressure behaviors appear normal.

Key words: gully terrain, large mining height, key stratum, ground pressure behavior