东胜煤田纳林河矿区冲击地压致灾原因分析研究
Analysis and Research on the Causes of Disasters Caused by Rock Burst in Nalinhe Mining Area of Dongsheng Coalfield
翟强1
作者信息
- 1. 鄂尔多斯市营盘壕煤炭有限公司,内蒙古 鄂尔多斯 017300
- 折叠
摘要
纳林河矿区是东胜煤田近年来开发的深部区域,普遍存在冲击地压自然灾害.以营盘壕煤矿为例,剖析矿井上部岩层、煤层冲击倾向性和地应力,对采掘工作面应力变化、来压步距、大能量事件进行了分析,总结了矿区大埋深、厚煤层、上部巨厚岩层组合条件下冲击地压发生机理,主要致灾因素为原岩高应力、沿空煤体破坏失稳,加之联络巷交叉点、背斜构造等叠加影响,总结了纳林河矿区冲击地压的特点,为该矿区的冲击地压防治提供参考.
Abstract
Nalinhe mining area is a deep area developed by Dongsheng Coalfield in recent years,and there are widespread natural disasters of rock burst existing.Taking Yingpanhao Coal Mine as an example,this paper analyzes the rock strata,coal seam impact tendency,and geostress in the upper part of the mine.The stress changes,pressure step distance,and high-energy events in the mining and excavation working face are analyzed.The occurrence mechanism of rock burst under the combined conditions of large burial depth,thick coal seams,and upper extremely thick rock strata in the mining area is summarized.The main disaster causing factors are high stress in the original rock,failure and instability of the coal body along goaf,combined with the superimposed influence of cross points of connecting roadways,anticline structures and so on.The characteristics of rock burst in Nalinhe mining area are summarized,providing reference for the prevention and control of rock burst in this mining area.
关键词
纳林河矿区/冲击地压/致灾分析Key words
Nalinhe mining area/rock burst/disaster-caused analysis引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据