Chunan Tang   

Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates

Main positions: President of international exchange committee of the Chinese Society of Rock Mechanics and Engineering CSRME
Other Post: Vice President of the Chinese Society of Rock Mechanics and Engineering CSRME

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Language:English

Paper Publications

Title of Paper:基于渐进微震损伤效应的蓄水期库岸稳定性分析

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Date of Publication:2019-03-28

Journal:人民长江

Included Journals:PKU

Volume:50

Issue:3

Page Number:151-155

ISSN No.:1001-4179

Key Words:边坡稳定;水库蓄水;微震监测;微震损伤效应;渐进性损伤;大岗山水电站

Abstract:大岗山水电站自2014年12月开始蓄水,至2015年11月库区水位从975 m升至1 130 m.水电站右岸边坡地质条件复杂,发育有辉绿岩脉、卸荷裂隙带和断层等不良地质体,降低了岩体性状,使右岸边坡在蓄水期存在局部或整体失稳的风险.通过对右岸边坡实施微震监测,获得了蓄水过程中右岸边坡微破裂的演化规律.结合微震监测信息,应用三维岩石真实破裂过程分析方法(RFPA3D-Centrifuge)计算蓄水期右岸边坡在渐进性微震损伤效应下安全系数随库水位升高的变化过程.经计算,边坡安全系数随库水位升高而降低,库水位升高对边坡稳定性有不利影响.最终安全系数为1.76,满足规范要求,说明蓄水过程中边坡处于稳定状态.

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