煤矿安全2017，Vol.48Issue(4)：59-62,4.DOI:10.13347/j.cnki.mkaq.2017.04.016
采空区下特厚煤层首采综放工作面顶板断裂的微震监测研究
Micro Seismic Monitoring Research on Roof Fracture at the First Fully Mechanized Mining Face in Special Thick Coal Seam Under Goaf
邓维元 1康天合1
作者信息
- 1. 太原理工大学采矿工艺研究所,山西太原030024
- 折叠
摘要
Abstract
In view of the characteristics of complex pressure features and lack of engineering examples at the first fully mechanized face in special thick seam under goaf,taking Xiegou Coal Mine 23103 fully-mechanized working face as the background,we use high-precision micro seismic monitoring technology to study the roof fracture and its evolution process.Results show that the high energy micro seismic events at coal face occur in front of the coal wall of 80 m,and the events distributed in the high roof (from 30 m to 70 m) have obvious periodicity;the periodic fracture and sinking of high roof make the low roof (0 to 30 m) occur persistent rupture in front of the coal wall of 30 m;goaf micro seismic events are more distributed behind the coal wall within the scope of 0 to 30 m,and more focused on the material lane near to coal wall;No.8 coal goaf above the roof of 70 m has no obvious seismic events.关键词
采空区下/特厚煤层/综放开采/微震监测/顶板断裂Key words
under goaf/special thick coal seam/fully-mechanized caving mining/micro-seismic monitoring/roof fracture分类
矿业与冶金引用本文复制引用
邓维元,康天合..采空区下特厚煤层首采综放工作面顶板断裂的微震监测研究[J].煤矿安全,2017,48(4):59-62,4.
