摘要
扎拉水电站厂后超高边坡普遍发生倾倒变形,对厂区枢纽选址和建筑物布置方案影响很大,需要准确评价这种特殊边坡的稳定性及其危害程度。采用综合勘察手段查明了倾倒变形边坡岩体工程地质特性,提出工程地质分区新原则。结合物理模拟、数值计算、稳定性和崩落计算等方法研究边坡破坏模式,初步建立了倾倒变形边坡稳定性评价体系。设计专业人员根据地质分析成果,将前期厂址进行了调整,确保了工程及施工安全,并开创了我国在倾倒变形边坡岩体中建设调压室的先例。
It was required to evaluate stability and harmfulness of high toppling slopes that were widely occurred behind the plant house of Lazha Hydropower Station in Tibet,as they severely influenced layout of the dam site and buildings of the power station.We adopted comprehensive survey methods to study the geological characteristics of these toppling slopes,and proposed new geological zoning principle.An stability evaluation system of the toppling slope was established preliminarily by analyzing the slope failure modes through physical and numerical simulations,stability and falling calculations.Based on this,the engineers adjusted the site of power house,which ensures the safety of the project and the construction process and create a precedent that surge chamber was arranged in rock of the toppling slope.
作者
黄振伟
肖东佑
HUANG Zhenwei;XIAO Dongyou(Changjiang Survey,Planning,Design and Research,Co.,Ltd,Wuhan 430010,China)
出处
《人民长江》
北大核心
2019年第12期90-94,156,共6页
Yangtze River
基金
国家重点研发计划项目(2018YFC1505006)
