摘要
为解决孤岛综放工作面沿空掘巷小煤柱宽度确定的难题,以鲍店煤矿103上05(2)孤岛工作面地质情况为工程背景,首先通过力学模型对孤岛综放工作面的沿空掘巷煤柱宽度进行分析计算,确定煤柱宽度应大于2.22 m。然后运用数值模拟研究了不同煤柱宽度下的巷道变形规律,最终确定煤柱宽度为4 m。
In order to solve the problem of determining the width of narrow coal pillar on gob-side entry at island fully mechanized caving face,the geological situation of Baodian coal mine 103~05 ~ face was regarded as the engineering background, firstly, the coal pillar width of gob-side entry driving in fully mechanized caving face is calculated and analyzed by mechanical model,the width of the coal pillar was determined to be 2.22 m at least,secondly,the deformation laws of surrounding rock deformation with different widths of narrow coal pillar were researched by using numerical analysis; the reasonable width of narrow coal pillar in Baodian coal mine can be determined about 4 m.
作者
臧传伟
孙景涛
ZANG Chuan-wei SUN Jing-tao(College of Mining and Safety Egineering, Shangdong University of Science and Technology, Qingdao266590, Chin)
出处
《煤炭技术》
北大核心
2017年第5期26-27,共2页
Coal Technology
关键词
孤岛工作面
沿空掘巷
煤柱宽度
island coal face
entry driving along goaf
width of narrow coal pillar
