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金宝铁矿南帮顺倾边坡滑坡机理研究及治理工程实践
- 柴利蒙|孙东东|杨天鸿|邓文学|蓝秋华|李金多
- 作者单位：
- 东北大学资源与土木工程学院|东北大学资源与土木工程学院|东北大学资源与土木工程学院|东北大学资源与土木工程学院|新疆金宝矿业有限责任公司|东北大学资源与土木工程学院
基金项目：
- 国家自然科学基金项目（U1903216）;国家重点研发计划项目（2017YFC1503101，2016YFC0801602）
详细信息：
- 作者简介：
- 柴利蒙（1994—），男，河南洛阳人，硕士研究生，研究方向为边坡破坏机理及稳定性；沈阳市和平区文化巷3号，东北大学资源与土木工程学院，110819；E-mail：1017299133@qq.com
- 通讯作者：
- E-mail：yangtianhong@mail.neu.edu.cn，024-83671626
- PDF下载
Study on landslide mechanism and treatment engineering practice of south consequent slope in Jinbao Iron Mine
- English Author：
- School of Resources and Civil Engineering,Northeastern University|School of Resources and Civil Engineering,Northeastern University|School of Resources and Civil Engineering,Northeastern University|School of Resources and Civil Engineering,Northeastern University|Xinjiang Jinbao Mining Co.,Ltd.|School of Resources and Civil Engineering,Northeastern University
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
金宝铁矿南帮边坡边坡角为65°~70°，属于陡倾层状岩质边坡，岩性条件差、节理构造发育，近年来发生多次滑坡事故，严重影响矿山的安全生产。利用数字钻孔摄像技术进行了结构面钻孔摄像勘查，获取统计区优势结构面的倾向、倾角；并进行历史滑坡典型剖面的数值模拟，结合矿山地质资料，分析其滑坡机理和滑坡模式；选取与滑坡区域邻近处于临界状态且地质条件类似的滑坡风险区，对滑坡区域和滑坡风险区采用长锚索锚杆与格构梁相配合的加固措施，并通过数值模拟验证加固方案的可行性。研究得到了金宝铁矿南帮顺倾层状岩质边坡的滑坡模式为下部剪切上部拉裂的切层破坏，并给出了针对性的边坡治理方案，可为类似露天矿顺倾层状边坡的维护提供借鉴。
关键词:
露天开采；顺倾边坡；滑坡机理；边坡加固；数值模拟
Abstract:
The south slope of Jinbao Iron Mine dips 65° to 70°.It is mainly a steep layered rock slope with poor lithologic conditions and a well-developed jointed structure.Many landslide accidents have taken place in recent years,seriously affecting the safe production of mines.The digital borehole camera technology is used to carry out the borehole camera survey of the structural plane to obtain the inclination and dip angle of the dominant structural plane in the statistical area.Besides,numerical simulation of typical historical landslide profiles is carried out,and with the help of mine geological data,the landslide mechanism and landslide model are analyzed.In the case study of risk zones that are adjacent to the landslide zones,at the brink of landslide,and have similar geological conditions with the histori-cal landslides,the reinforcement measures of long bolt assisted by lattice beam are advised to the landslide zones and risk zones,and the feasibility of the reinforcement scheme is verified by numerical simulation.According to the experiment,the landslide mechanism of consequent layered rock slope in the soulh of Jinbao Iron Mine is concluded to be the fracture failure of upper part shearing and lower part tension,and the corresponding slope treatment scheme is given,which can provide references for the maintenance of similar open-pit steep layered rock slopes.
Keywords:
open-pit mining;consequent slope;landslide mechanism;slope reinforcement;numerical simulation