溪洛渡水电站地下厂房岩体工程实践

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摘要溪洛渡超大型地下洞室群玄武岩组内层间与层内错动带使得围岩非连续性和各向异性损伤问题突出，采用损伤弹塑性理论对围岩稳定性进行分析，以良好的施工组织与工艺水平对潜在的不稳定区域和地质缺陷部位实施精细化光面爆破，严格控制围岩的开挖损伤并保证岩梁等的优良成型。针对关键部位和地质缺陷部位进行补强加固并实施安全监测，利用现阶段监测成果对围岩稳定性预测进行检验，并对实际围岩安全性进行评价。针对典型复杂地下洞室的地质条件、稳定性分析、开挖与支护程序、安全监测成果分析等岩体工程实践环节的回顾，在设计理念和工程实施方面提出一些见解，可为类似超大地下工程实际提供直接借鉴。

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关键词 ：岩石力学, 地下洞室, 围岩稳定性, 溪洛渡水电站

Abstract：The underground powerhouses′ rock masses at Xiluodu hydropower station are discontinuous and anisotropic damage influenced by the inner beddings of the basalt. The elasto-plastic damage theory is used to analyze the stability of surrounding rock. A good construction organization and technological are executed to control the rock excavation damage in order to ensure the rock beam forming. Moreover，the safety monitoring feedback is implemented for the location of geological defects，and the monitoring results are used to estimate the surrounding rock stability. Through reviewing the rock mass engineering practice process of a typical underground powerhouse such as the complex geological conditions，stability analysis，excavation and support procedures，and safety monitoring analysis，a number of insights for the design concept and implementation of the project are put forward，which can provide direct reference for the giant underground powerhouse engineering.

Key words： rock mechanics underground powerhouse stability of surrounding rock Xiluodu hydropower station

收稿日期: 2010-04-29

引用本文:

樊启祥1，2，王义锋2 . 溪洛渡水电站地下厂房岩体工程实践[J]. 岩石力学与工程学报, 2011, 30(S1): 2986-2993.
FAN Qixiang1，2，WANG Yifeng2. A CASE STUDY OF ROCK MASS ENGINEERING OF UNDERGROUND POWERHOUSE AT XILUODU HYDROPOWER STATION. , 2011, 30(S1): 2986-2993.

链接本文:

http://www.rockmech.org/CN/Y2011/V30/IS1/2986

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