[1]王俊,赵建军,瞿生军,等.卸荷条件下高边坡大规模开挖的“地质-力学”响应研究——以西藏如美水电站右坝肩为例[J].水文地质工程地质,2018,45(04):37.[doi:10.16030/j.cnki.issn.1000-3665.2018.04.06]
 WANG Jun,ZHAO Jianjun,QU Shengjun,et al.A study of the geological-mechanical response during large-scale excavation of high slope under unloading condition:exemplified by the right abutment of the Tibet Rumei Hydropower Station[J].Hydrogeology & Engineering Geology,2018,45(04):37.[doi:10.16030/j.cnki.issn.1000-3665.2018.04.06]
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卸荷条件下高边坡大规模开挖的“地质-力学”响应研究——以西藏如美水电站右坝肩为例()
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《水文地质工程地质》[ISSN:1000-3665/CN:11-2202/P]

卷:
45卷
期数:
2018年04期
页码:
37
栏目:
工 程 地 质
出版日期:
2018-07-15

文章信息/Info

Title:
A study of the geological-mechanical response during large-scale excavation of high slope under unloading condition:exemplified by the right abutment of the Tibet Rumei Hydropower Station
文章编号:
1000-3665(2018)04-0037-08
作者:
王俊1赵建军1 瞿生军2 廖芸婧3 汪果1 樊奇1
1.成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川 成都610059;2.江苏省工程勘测研究院有限责任公司,江苏 扬州225000;3.国网四川省电力公司宜宾电公司,四川 宜宾644000
Author(s):
WANG Jun1ZHAO Jianjun1 QU Shengjun2 LIAO Yunjing3 WANG Guo1 FAN Qi1
1.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection/Chengdu University of Technology, Chengdu,Sichuan610059, China; 2.Research Institute to Engineering Survey of Jiangsu Province, Yangzhou, Jiangsu225000, China; 3.Yibin Electric Power Supply Company of Power Companies in Sichuan Province, Yibin ,Sichuan644000, China
关键词:
如美水电站卸荷条件岩质高边坡大规模开挖变形响应
Keywords:
Rumei Hydropower Station unloading condition high rock slope large scale excavation deformation response
分类号:
TU457
DOI:
10.16030/j.cnki.issn.1000-3665.2018.04.06
文献标志码:
A
摘要:
以西藏如美水电站近700 m开挖边坡为例,通过现场卸荷的详细调查,对复杂地质条件下的岩质高边坡大规模开挖离散元模拟的变形响应进行了研究,得出此类边坡在卸荷条件下开挖后的变形响应过程、基本规律及地质-力学模式。模拟结果表明:高边坡大规模开挖之后,边坡的变形与开挖部位具有较强的联系,开挖面上部往往变形较大;边坡主要以浅表部碎裂岩体及深部的“滑移-拉裂”地质-力学响应为主导模式;边坡变形与开挖之后岩石卸荷有必然联系。随着开挖的继续,随着开挖面越来越远,坡体下部变形逐渐衰减,变形主要向开挖面上部累积,最终趋于稳定的响应特征。
Abstract:
The excavation slope of the Rumei Hydropower Station in Tibet (about 700 m high) is taken as an example in this paper. Through the detailed site investigation of the unloading, a study of the distinct element modeling deformation response of the large scale excavation is carried out on high rock slopes under complex geological conditions. This distinct element modeling gives the deformation response process, the basic laws and geology mechanics model of the slope under unloading conditions. The simulation results show that after the large scale excavation of the high slope, the deformation of the high slope has a strong connection with the position, and the upper part of the excavation face tends to have large deformation. The dominant modes of slope deformation are mainly the cataclastic rock mass in the shallow surface and the geological and mechanical response of slipping tension fracture in the deep part. There is a close relationship between the slope deformation and the rock unloading after excavation. With the excavation progresses, the slope deformation increases with the excavation, the deformation of the lower part gradually decreases, and the deformation mainly accumulates on the upper part of the excavation, and finally tends to be stable.

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备注/Memo

备注/Memo:
收稿日期: 2017-10-31; 修订日期: 2018-03-30
基金项目: 中国华能集团科技项目(HNKJ16-H15)经费支持;国家科技支撑计划(2015BAK09B01);国家创新研究群体科学基金(41521002);国家重点基础研究计划(973)资助项目(2013CB733202)
第一作者: 王俊(1993-),女,硕士研究生,主要从事工程地质方面的研究工作。E-mail:872234497@qq.com
更新日期/Last Update: 2018-07-15