摘要
为研究开挖蓄水对边坡上部重要建(构)筑物的影响,利用物理实验探究开挖和蓄水过程中边坡岩体的应力、变形、地表沉降以及孔隙水压力的变化情况,对开挖扰动以及蓄水的作用下边坡体与断层构造带变形、破坏特征及其规律进行分析。研究结果表明:开挖会导致岩体应力重新分布,近坡面应力变化较大,开挖时上盘岩体在自重力的作用下会沿断层破碎带产生相对错动。蓄水初期,边坡坡体表面受到动静水压力作用产生压密变形,内部孔隙水压力升高,边坡向临空向变形,坡顶出现沉降趋势。实验结果可为高陡露天煤矿滑坡防控提供理论参考。
In order to investigate the effects of important buildings and structures on the upper part of the slope under excavation and water storage,physical experiments are used to explore the changes of stress,deformation,surface settlement and pore water pressure of the slope rock mass in the process of excavation and water storage.Meanwhile,deformation,failure characteristics and laws of the slope and fault tectonic zone under excavation and water storage are analyzed.The results shows that excavation will lead to the redistribution of the stress of the rock mass,the stress of slope surface will change greatly,and the upper wall rock mass will have a relative dislocation trend along the fault fracture zone under the action of self-gravity during excavation.At the initial period of water storage,the surface is compacted by the dynamic and static water pressure,the internal pore water pressure increased,the slope is deformed to the free side,and also settlement trend appears at the top.The results can provide a basis for the prevention and control of landslides in high and steep open-pit coal mines.
作者
费晓欧
缪海宾
陆丹丹
FEI Xiaoou;MIAO Haibin;LU Dandan(School of Civil Engineering,Liaoning Petrochemical University,Fushun 113001,China;State Key Laboratory of Disaster Prevention and Ecology Protection in Open-pit Coal Mines,China Coal Technology and Engineering Group Shenyang Research Institute,Fushun 113122,China;School of Mechanics and Engineering,Liaoning Technical University,Fuxin 123000,China)
出处
《辽宁工程技术大学学报(自然科学版)》
北大核心
2025年第2期166-174,共9页
Journal of Liaoning Technical University (Natural Science)
基金
国家重点研发计划项目(2021YFC3001901)。
关键词
边坡稳定性
开挖卸荷
坡体变形
沉降
滑坡
slope stability
excavation and unloading
slope deformation
sedimentation
landslide
