露天采矿技术2024，Vol.39Issue(4)：15-19,5.DOI:10.13235/j.cnki.ltcm.2024.04.004
岩质边坡卸荷条件下变形破坏演化研究
Study on deformation and failure evolution of rock slope under unloading conditions
田志鹏1
作者信息
- 1. 新疆天池能源有限责任公司,新疆 昌吉 831100
- 折叠
摘要
Abstract
In order to explore the deformation and failure characteristics of slope with different height under excavation and unloading conditions,taking the geological characteristics of Jiangjungebi No.1 Open-pit Mine as an example,the characteristics of crack propagation and slip deformation under excavation and unloading are analyzed by using borehole observation and displacement monitoring.The deformation and failure laws of 200 m and 400 m rock slopes were investigated by using similar simulated bottom friction tests,and the fracture development and horizontal displacement evolution laws were analyzed under the conditions of excavation relief.The results show that the 200 m rock slope causes tensile cracks under the action of gravity,and the cracks extend under the traction of the lateral slope body.After the cracks are connected,a sliding failure mode is formed.The fracture failure mode is mainly compressive crack caused by tensile shear compound failure type.The deformation and failure of 400 m slope is divided into upper and lower parts.The deformation and failure trend of the upper part is the same as that of the 200 m slope.The deformation of the lower part is mainly caused by cracks caused by pressure relief and relaxation,and the sliding failure form is formed under the pushing and pulling action of the upper slope.关键词
岩质边坡/边坡变形/开挖卸荷/相似模拟/边坡稳定性/位移监测Key words
rock slope/slope deformation/excavation unloading/analog simulation/slope stability/displacement monitoring分类
矿业与冶金引用本文复制引用
田志鹏..岩质边坡卸荷条件下变形破坏演化研究[J].露天采矿技术,2024,39(4):15-19,5.
