摘要
以陕西省小庄煤矿为研究背景,利用数值模拟与现场实测相结合的研究手段,分析了深埋特厚煤层采动影响范围以及对邻近巷道的影响,研究表明:深埋特厚煤层回采过程中工作面前方支承压力影响范围达到60m,在5～17m处出现应力增高区;工作面侧方支承压力在7～13m处出现应力增高区;受采动影响后邻近巷道塑性区呈不对称分布,靠近回采工作面一侧围岩破坏范围大于较远一侧围岩破坏范围。研究成果可为相似环境下巷道支护、煤层开采提供指导。
Taking Xiaozhuang Coal Mine in Shaanxi Province as the research background,using research methods that combine numerical simulation with on-site measurement,we analyze the influence scope of deep mining of extremely thick coal seams and its impact on adjacent roadways. Research shows: in the deep-buried and extremely thick coal seam, the supporting pressure in front of the working face reaches 60 m,and the stress increasing zone appears at 5 ~ 17 m. Support stress at the side of working face appears stress increase zone at 7 ~ 13 m;after the impact of mining,the plastic zone near the roadway is asymmetrically distributed. The destruction of surrounding rock near the working face is greater than the destruction of surrounding rock on the far side. The research results can provide guidance for roadway support and coal seam mining under similar circumstances.
作者
任建喜
张卫军
张琨
景帅
REN Jian-xi;ZHANG Wei-jun;ZHANG Kun;JING Shuai(Xi’an University of Science and Technology,Xi’an 710054,China)
出处
《煤炭工程》
北大核心
2019年第1期77-81,共5页
Coal Engineering
基金
国家自然科学基金项目资助(11872299
11802230)
陕西省科技计划项目资助(2016XT-04
2016XT-25
2017GY-156
2018JQ5122)
关键词
深埋特厚煤层
采动应力
支承压力
邻近巷道
塑性区变化
数值模拟
deep-buried thick coal seam
mining impact
support pressure
adjacent roadways
plastic zone change
numerical simulation
