Non-harmonious deformation controlling of gob-side entry in thin coal seam under dynamic pressure
Non-harmonious deformation controlling of gob-side entry in thin coal seam under dynamic pressure
复制标题
动压作用下薄煤层沿空巷道非和谐变形控制
DOI：
10.1016/j.jrmge.2014.05.001
复制
发表时间：
2014-06-01
影响因子：
7.3
通讯作者：
Zang, Chuanwei
中科院分区：
文献类型：
--
作者：
Fan, Kegong;Liang, Hongguang;Zang, Chuanwei
动压下沿空留巷与邻近采空区上覆岩层移动后沿空留巷的表现完全不同。沿空留巷受邻近工作面开采影响，顶板侧向结构将发生剧烈调整。因此，应认真考虑沿采空区窄煤柱的变形破坏特征。根据薄煤层动压沿空留巷资料，提出了窄煤柱加固措施。此外，还提出了围岩结构的非协调控制和沿空留巷变形的非平衡，以避免潜在的破坏。现场实践表明，该方法能较好地解决动压沿空留巷的支护问题，可推广应用于其他类似采矿情况。(C)中科院岩土力学研究所2014年。爱思唯尔B.V.制作和主办。保留所有权利。
The behavior of gob-side entry under dynamic pressure is totally different from the one driven after the movement of overlying strata above the adjacent coalface goaf. The gob-side entry will experience severe roof lateral structural adjustments caused by adjacent coalface mining. Thus the deformation and failure characteristics of narrow coal pillar along the gob should be carefully considered. On the basis of the data of the gob-side entry obtained in a thin coal seam under dynamic pressure, the measures to reinforce the narrow coal pillar are put forward. In addition, the non-harmonious controlling of the rock structures and non-equilibrium gob-side entry deformation is proposed to avoid potential failure. Field practices show that the supporting problems of the gob-side entry under dynamic pressure can be well addressed, which could be used in other similar mining cases. (C) 2014 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting by Elsevier B.V. All rights reserved.