官地地下厂房洞室群施工期围岩位移特征分析

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (750 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要对官地水电站地下厂房洞室群施工期围岩位移特征进行分析，以主厂房为例，研究结构面对位移的影响和位移随时间曲线的变化规律。分析表明：地下厂房围岩位移为0～20 mm，位移较大部位出现在主厂房边墙中上部和岩锚梁部位。开挖揭露量级较大部位的位移主要受到错动带控制，施工期洞室最大位移达到61.49 mm，结构面附近的张开位移是该部位的主要位移。锚杆和锚索对围岩位移起到很好的约束作用。位移主要发生在开挖施工期间，且随开挖过程表现出典型的阶跃上升特征；开挖施工结束后围岩位移收敛速度较快，围岩位移的时效特征不显著，洞室群稳定状况良好。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：地下工程, 施工期, 地下洞室群, 安全监测, 围岩位移, 错动带

Abstract：Based on the monitoring data of Guandi hydropower station underground powerhouse chambers during the construction period，displacement characteristics of surrounding rock are analyzed. Taking the generator chamber for example，research focuses on the structure face impact of the displacement and variation of the displacement-time curve. The research results show that the displacement of the rock mass is normally less than 20 mm. The larger displacement positions concentrate in the rock-anchored beam site and the middle and upper positions of generator chamber upstream side walls. Excavation exposed the larger displacement magnitude positions are controlled by the fault zone. The maximum displacement of construction period is 61.49 mm. The opening displacement of the structure face is the main displacement of the measuring point. Anchor bolts and anchor ropes restricted the rock displacement well. Displacement generate mainly during the excavation period，and display a typical characteristic step rise with the excavation process. When excavation completed，the surrounding rock mass deformation reduce quickly. The time characteristic of the surrounding rock displacement is not noticeable. The stability of the cavities is good.

Key words： underground engineering construction period underground cavities safety monitoring displacement of surrounding rock mass fault zone

收稿日期: 2012-04-14

引用本文:

高春玉1，2，邓建辉1，2，魏进兵1，2. 官地地下厂房洞室群施工期围岩位移特征分析[J]. 岩石力学与工程学报, 2012, 31(s2): 3911-3919.
GAO Chunyu1，2，DENG Jianhui1，2，WEI Jinbing1，2. ANALYSIS OF SURROUNDING ROCK DISPLACEMENT CHARACTERISTICS DURING CONSTRUCTION IN GUANDI UNDERGROUND POWERHOUSE CHAMBERS. , 2012, 31(s2): 3911-3919.

链接本文:

http://www.rockmech.org/CN/Y2012/V31/Is2/3911

[2]	黄达，黄润秋，张永兴. 断层位置及强度对地下洞室围岩稳定性影响[J]. 土木建筑与环境工程，2009，31(2)：68-73.(HUANG Da，HUANG Runqiu，ZHANG Yongxing. Analysis of influence of fault location and strength on deformation and stress distribution of surrounding rocks of large underground openings[J]. Journal of Civil，Architectural and Environmental Engineering，2009，31(2)：68-73.(in Chinese))
[5]	王俤剀，彭琦，汤荣，等. 地下厂房岩锚梁裂缝成因分析[J]. 岩石力学与工程学报，2007，26(10)：2 125-2 129.(WANG Dikai，PENG Qi，TANG Rong，et al. Causes analysis of cracking of rock-bolted crane girder in an underground powerhouse[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(10)：2 125- 2 129.(in Chinese)) " target="_blank">
[8]	董志宏，丁秀丽，卢波，等. 大型地下洞室考虑开挖卸荷效应的位移反分析[J]. 岩土力学，2008，29(6)：1 562-1 568.(DONG Zhihong，DING Xiuli，LU Bo，et al. Displacement back analysis of rock mechanical parameters of large-scale underground powerhouse with unloading surrounding rock mass[J]. Rock and Soil Mechanics，2008，29(6)：1 562-1 568.(in Chinese)) " target="_blank">
[3]	冷先伦，盛谦，朱泽奇，等. 遍布节理对地下洞室群围岩稳定性的影响研究[J]. 土木工程学报，2009，42(9)：96-103.(LENG Xianlun，SHENG Qian，ZHU Zeqi，et al. Effect of ubiquitous joints on the stability of surrounding rock mass of multiple underground caverns[J]. China Civil Engineering Journal，2009，42(9)：96-103.(in Chinese)) " target="_blank">
[6]	杨林德，颜建平，王悦照，等. 围岩变形的时效特征与预测的研究[J]. 岩石力学与工程学报，2005，24(2)：212-216.(YANG Linde，YAN Jianping，WANG Yuezhao，et al. Study on time-dependent properties and deformation prediction of surrounding rock[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(2)：212-216.(in Chinese))
[9]	王依山，刘永胜，张成柏，等. 地下厂房不良地质交叉洞段施工的研究与应用[J]. 东北水利水电，2010，(10)：20-23.(WANG Yisham，LIU Yongsheng，ZHANG Chengbai，et al. Study and application with bad geology on cross tunnel section construction for underground powerhouse[J]. Water Resources and Hydropower of Northeast，2010，(10)：20-23.(in Chinese)) " target="_blank">
[1]	晏长根，刘彤，伍法权. 复杂条件下大型地下洞室群的变形稳定性分析[J]. 工程地质学报，2008，16(1)：84-88.(YAN Changgen，LIU Tong，WU Faquan. Deformation and stability analysis of large-scale underground cavity group under complicated geological conditions[J]. Journal of Engineering Geology，2008，16(1)：84-88.(in Chinese))
[4]	彭琦，王俤剀，邓建辉，等. 地下厂房围岩变形特征分析[J]. 岩石力学与工程学报，2007，26(12)：2 583-2 587.(PENG Qi，WANG Dikai，DENG Jianhui，et al. Analysis of surrounding rock deformation characteristics in underground powerhouse[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(12)：2 583-2 587.(in Chinese)) " target="_blank">
[7]	李宁，段小强，陈方方，等. 围岩松动圈的弹塑性位移反分析方法探索[J]. 岩石力学与工程学报，2006，25(7)：1 304-1 308.(LI Ning，DUAN Xiaoqiang，CHEN Fangfang，et al. A back analysis method for elastoplastic displacement of broken rock zone around tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(7)：1 304-1 308.(in Chinese)) " target="_blank">
[10]	黄秋香，邓建辉，苏鹏云，等. 瀑布沟水电站地下厂房洞室群施工期围岩位移特征分析[J]. 岩石力学与工程学报，2011，30(增1)：3 032-3 042.(HUANG Qiuxiang，DENG Jianhui，SU Pengyun，et al. Analysis of surrounding rock displacement character during construction in Pubugou hydropower station underground powerhouse chambers[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(Supp.1)：3 032-3 042.(in Chinese)) " target="_blank">