煤矿安全2017，Vol.48Issue(z1)：24-28,5.DOI:10.13347/j.cnki.mkaq.2017.S1.006
综采工作面末采及回撤矿压显现规律与顶板控制技术
Strata Behaviors Laws of End-mining and Withdrawing of Fully Mechanized Coal Mining Face and Roof Control Technology
韩龙1
作者信息
- 1. 神华神东煤炭集团有限责任公司生产管理部,陕西神木719315
- 折叠
摘要
Abstract
End-mining of fully mechanized coal mining in Shendong Mining Area uses auxiliary lane multi-channel retraction technology.Through the research of strata behaviors laws in end mining stage and support retraction stage,the paper proposes end-mining isobaric pressure roof control technology.This paper takes 22303 fully mechanized coal mining face in Bulianta Coal Mine as an example.Studies show that a certain size of isobaric coal pillar needs to be reserved by calculation to stop mining and yielding before the interconnection of fully mechanized mining face end mining.Basic roof is fracture and turns to form stable masonry beam structure when the working face is pressed;the main retraction channel will not be pressed during the connection period,which can ensure the safety of support retreat.If the working face is still without pressure after yielding,the working face is in a state of pressure during the retraction period;it needs to strengthen the support of withdrawal channel to prevent the accident of supports crushing.关键词
综采工作面末采/支架回撤/矿压显现/等压/顶板控制Key words
end-mining of fully mechanized working face/support retraction/strata behaviors/isobaric/root control分类
矿业与冶金引用本文复制引用
韩龙..综采工作面末采及回撤矿压显现规律与顶板控制技术[J].煤矿安全,2017,48(z1):24-28,5.
