煤矿安全2019，Vol.50Issue(11)：228-231,4.DOI:10.13347/j.cnki.mkaq.2019.11.053
露天煤矿端帮张裂缝对边坡稳定性的影响
Influence of End Slope with a Tensile Fracture on Slope Stability in Open-pit Coal Mine
摘要
Abstract
In order to ensure the safety and reliability of the open-pit coal mine end slope with a tensile fracture, the influence on slope stability of the developing degree of the fracture is studied. It is concluded that the occurrence of a tensile fracture will lead to a significant reduction in the safety factor of the slope. As the increase of fracture depth, the displacement of the monitoring points will also increase, and the safety factor will always decrease. The magnitude of the change is decreasing. According to the characteristics of slope sliding failure, it is found that the length of the shear failure section of the lower part of the sliding body is also increased due to the increase of the fracture depth. Therefore, the range of the rock mass during the shear is increased, so the shear resistance of the lower rock mass is improved. At last, according to the current working conditions, some suggestions are proposed for the west end to prevent the crack from extending to the lower rock layer, it is suggested that GPS monitoring should be carried out in the control area of the crack on the end wall to monitor the dynamic change of the slope in real time.关键词
露天煤矿/拉裂缝/边坡稳定性/数值模拟/边坡防护Key words
open-pit mine/ tensile fracture/ slope stability/ numerical simulation/ slope protection分类
矿业与冶金引用本文复制引用
陈爽,吴榕真,韩流,李新鹏..露天煤矿端帮张裂缝对边坡稳定性的影响[J].煤矿安全,2019,50(11):228-231,4.基金项目
国家重点研发计划资助项目(2016YFC0501103) （2016YFC0501103）
国家自然科学基金青年科学基金资助项目(51804298) （51804298）
国家自然科学基金面上资助项目(51774271) （51774271）
