松软煤层回采工作面应力集中带特征研究

Soft Coal Mining Face with the Characteristics of the Stress Concentration

由于采掘的影响,让原本处于平衡状态的煤层应力又重新分布,并且在工作面前方形成了一定宽度的应力集中带。在应力集中带内,瓦斯难以排放,对安全生产构成威胁。文章通过对松软煤层回采工作面前方煤体垂直应力的现场实测,找到了回采工作面应力集中带的大致范围,并发现应力集中带较前人所研究的离煤壁距离更远,通过整理分析资料,讨论产生这种情况的原因。为更好的掌握松软煤层应力集中带提供科学依据。

Due to the influence of mining,let originally in balance of coal seam stress distribution,and again in front of the formed some of the width of the stress concentration belt.In the stress concentration belt inside,gas emissions,hard to production safety threat.This article through to soft coal seam mining coal extracion ahead of the vertical stress in-situ measurement and found stoping face the stress concentration belt of approximate scope,and found that the stress concentration belt than previous research from coal surface distance is farther,by sorting out and analyzing data,discuss produce the reasons why.For better control soft coal seam the stress concentration belt provides scientific basis.