摘要
为确定神树畔煤矿3煤采区区段煤柱合理尺寸,采用理论分析和数值模拟相结合的方法对区段煤柱大小、垂直应力、支撑压力分布规律进行研究,研究结果表明:理论分析得出煤柱宽10 m时垂直应力值为7.83 MPa;数值模拟得出煤柱合理尺寸为10 m,垂直应力7.34 MPa;综上,对比分析得出煤柱合理留设宽度为10 m。
In order to determine the reasonable size of coal pillars in No.3 coal seam of Shenshuban Coal Mine,the size, vertical stress and support pressure distribution of coal pillars in Shenshuban Coal Mine were studied by theoretical analysis and numerical simulation. The results showed that the vertical stress value is 7. 83 MPa when the width of coal pillars is 10 m, and the reasonable size of coal pillars is 10 m and the vertical stress is 7. 34 MPa by numerical simulation. To sum up, the reasonable width of coal pillar is 10 m by comparative analysis.
作者
罗宇恩
LUO Yu-en(Xi'an University of Science and Technology, Xi'an,Shanxi, 710054)
出处
《煤炭科技》
2019年第4期27-29,46,共4页
Coal Science & Technology Magazine
关键词
区段煤柱
双拱力学模型
垂直应力
数值模拟
塑性区
section coal pillar
mechanical model of double arch
vertical stress
numerical simulation
plastic zone
