动压影响下掘进工作面支护方案优化设计及其应用  

Optimal design and application of supporting scheme for driving face under dynamic pressure

作　　者：宁泽北 NING Zebei(Baigou coal industry Co.,LTD,Shanxi Yangcheng Yangtai Group,Yangcheng 048100,China)

机构地区：[1]山西阳城阳泰集团白沟煤业有限公司,山西阳城048100

出　　处：《煤矿现代化》2024年第6期26-31,共6页Coal Mine Modernization

摘　　要：为有效降低对掘煤巷掘进工作面受到相邻采煤工作面的回采动压影响,减小巷道失修变形工程量,通过理论计算后优化了锚杆、锚索的支护参数,并采用数值模拟计算分析的方法,从无支护条件下的围岩塑性区域分布规律、补强支护后的围岩塑性区域分布规律和巷道垂直方向上的应力分布情况等方面开展模拟论证。经过实践效果应用检验,结合测站采集数据分析,对掘巷道顶板移近量为142 mm,较优化前降低了72.4%;底板移近量为51 mm,较优化前降低84.3%;煤柱帮移近量为106 mm,较优化前降低77.1%;回采帮移近量为58 mm,较优化前降低98.7%,取得较好的支护改造效果。In order to effectively reduce the impact of mining dynamic pressure on the coal mining face of the coal mining roadway and reduce the amount of roadway disrepair and deformation,the supporting parameters of bolt and cable are optimized after theoretical calculation,and numerical simulation calculation and analysis are adopted.The distribution law of surrounding rock plastic region without support,the distribution law of surrounding rock plastic region after reinforcement support and the stress distribution in the vertical direction of roadway are simulated and demonstrated.Through the practical effect application test,combined with the data collected from the measuring station analysis,the roof displacement of the excavation roadway is 142mm,which is reduced by 72.4%compared with before optimization.Base plate approximation is 51mm,which is reduced by 84.3%compared with before optimization.The nearness of coal pillar is 106mm,which is 77.1%lower than before optimization.The displacement of stoping wall is 58mm,which is 98.7%lower than that before optimization,and the support reconstruction effect is better.

关 键 词：保护煤柱 对掘巷道 支护工艺 数值模拟 

分 类 号：TD353[矿业工程—矿井建设]