摘要
为了解决长平煤矿大采高工作面区段煤柱留设的合理尺寸问题,以长平煤矿4 305工作面为例,采用有限差分程序对不同工况下煤柱应力场分布规律进行了仿真研究。得出了煤柱应力分布呈＂马鞍型＂和弹性核演化过程中煤柱尺寸的相应范围,与理论计算结果相比较,确定长平矿大采高工作面的煤柱尺寸为30~40 m,为矿井下一步煤层开采区段煤柱合理留设提供了依据。
In order to solve the reasonable size problem of section coal pillar of big mining high face in chang ping coal mine,according to 4305 face,the finite difference procedure was used to simulate the evolution rule of stress field in coal pillar under different sizes.Pillar size values of interval with stress state of Saddle type and different elastic nuclear distribution were given.Compared with the theoretical calculation result,the reasonable coal pillar size of big mining face in chang-ping coal mine is from 30 meters to 40 meters.It provides an important basis to the following coal seam mining in design of width of section coal pillar.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2011年第5期645-648,共4页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金资助项目(51174106)
关键词
长平煤矿
大采高
区段煤柱
数值模拟
FLAC3D
支承压力
弹性核
煤柱宽度
chang-ping mine
big mining height
section coal pillar
numerical simulation
FLAC3D
bearing pressure
elasticity centralized distribution
coal pillar width
