Research on unsymmetrical loading effect induced by the secondary mining in the coal pillar

摘要：

The coal pillar is usually subject to mining influence on both sides.The loading distribution on coal pillar is unsymmetrical under the unilateral influence.lts own bearing characteristic is closely related to the surrounding rock structure.To determine the width of the pillar in coal mine, the dynamic stability of the pillar should be taken into account besides the consideration of the maximum static loading capacity. Theoretical calculating formula of the plastic zone of the coal pillar induced by one-sided mining is presented according to the limiting equilibrium theory in this paper. The unsymmetrical loading effect during the advancing process of the mining is analyzed through the field monitoring by the deployment of the stress sensors in the pillar along the longitudinal direction. The method to determine the proper width of the coal pillar is presented at last.

关键词： width of the coal pillar mine stress monitoring unsymmetrical loading influence by mining

作者: Xie Xing-zhi Fan Zhi-zhong Huang Zhi-zeng Xu Gang

作者单位: Coal Mining & Designing Branch,China Coal Research Institute,Beijing 100013,China Department of Coal Mining & Designing, Tiandi Science & Technology Co.Ltd., Beijing 100013, China

会议类型: 国际会议

会议名称: The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)

会议地点: 北京

会议语种:英文

页码: 745-750

在线出版日期: 2011-10-27（万方平台首次上网日期，不代表论文的发表时间）