| 糯扎渡地下厂房开挖围岩变形及支护应力监测 |
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| 引用本文： | 傅萌,陈华,胡昆. 糯扎渡地下厂房开挖围岩变形及支护应力监测[J]. 人民长江, 2012, 43(4): 80-82 |
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| 作者姓名： | 傅萌 陈华 胡昆 |
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| 作者单位： | 长江勘测规划设计有限责任公司工程建设与监理公司,湖北武汉,430010 |
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| 摘 要： | 为了掌握糯扎渡电站地下厂房的开挖质量，开挖施工期间，针对地质情况和开挖设计方案，在厂房顶拱和边墙等典型部位布置了8个主要监测断面，对围岩应力、变形进行监测。监测成果表明：地下厂房开挖方式和支护体系设计合理，厂房顶拱和边墙岩壁光爆和预裂效果好，开挖对围岩变形影响小，桥机运行后，岩壁梁锚杆应力与岩壁间裂缝未显著增加。
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| 关 键 词： | 开挖施工 围岩变形 安全监测 地下厂房 糯扎渡水电站 |
Monitoring of surrounding rock deformation and support stress during excavation of Nouzadu underground power house |
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| FU Meng , CHEN Hua , HU Kun. Monitoring of surrounding rock deformation and support stress during excavation of Nouzadu underground power house[J]. Yangtze River, 2012, 43(4): 80-82 |
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| Authors: | FU Meng CHEN Hua HU Kun |
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| Affiliation: | (Construction and Supervision Company,Changjiang Institute of Survey,Planning,Design and Research,Wuhan 430010,China) |
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| Abstract: | In order to control the excavation quality of Nouzadu underground power house,in the construction,8 main monitoring cross-sections were arranged at the typical locations such as crest arch and side wall of power house to monitor the surrounding rock stress and deformation.The monitoring results show that the excavation method and support system are reasonable,good effects of smooth blasting and pre-split control for the crest arch and side wall are obtained;after operation,the excavation has small influence on the surrounding rock deformation,and no obvious increase of bolts stress of rock beam and cracks between the rock walls is observed. |
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| Keywords: | excavation construction surrounding rock deformation safety monitoring underground power house Nouzadu Hydropower Station |
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