摘要
为了研究河流下综放工作面开采的覆岩破坏特征,防止突水溃沙,以山西某矿综采工作面的相关地质条件为背景,应用FLAC3D建立数值模拟模型,对工作面覆岩应力分布和塑性屈服区发育特征进行分析,得出了该工作面两侧煤柱附近出现应力集中,中部覆岩出现卸压区,覆岩导水裂隙带发育最大高度62 m。
In order to grasp the overburden failure development features of fully mechanized caving under river,preventing water bursting sand inrush,based on the relevant geological conditions of mechanized mining face in Shanxi Province,determine rock and boundary parameters,engineering geological model is established by FLAC3 Dto analyze overburden stress distribution and characteristics of plastic yield zone,the results show that stress concentration occurs near both sides of coal pillar and central overburden appeared pressure released area,height of water flowing fractured zone is 62 m.
出处
《煤炭技术》
CAS
北大核心
2014年第9期163-165,共3页
Coal Technology
基金
国家自然科学基金资助项目(41272343)
关键词
覆岩破坏
应力分布
数值模拟
导水裂隙带
overburden failure
stress distribution
numerical simulation
water flowing fractured zone
