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:锦屏二级水电站施工排水洞岩爆数值模拟

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Date of Publication:2009-09-01

Volume:Vol.39

Page Number:284-289

Key Words:水电站;应力分布;数值模拟;深埋隧洞;排水洞岩爆

Abstract:岩爆是一种极为复杂的动力失稳现象。在深埋隧洞的勘察设计和施工过程中,高地应力及其诱发的频繁岩爆,是影响隧道洞室稳定的重要因素之一。作为四川雅砻江锦屏二级水电站的重要的临时工程,施工排水洞在进入埋深1600m后就发生多次岩爆,严重制约了工程的进展,为了研究岩爆发生机理与高地应力之间的关系以及更好地预测岩爆在隧洞内发生的位置,运用渐进破坏过程数值分析软件RFPA对施工排水洞进行初步的应力分析,得出与现场实测相吻合的初始地应力拟合曲线。同时,隧洞开挖引起应力重分布而产生的围岩破坏的数值模拟也很好的印证了现场发生的岩爆情况,表明基于渐进破坏过程数值分析的RFPA可以真实地模拟高地应力下岩爆机理。

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