Study on unloading relaxation characteristics of foundation rock mass in middle ground-stress region

被引：0
|
作者：
Zhao, Yong [1 ]
Xu, Mo [1 ]
Qin, Limao [2 ]
Guo, Jian [1 ]
Zhu, Kejun [3 ]
机构：
[1] State Key Lab. of Geoharzards Prevention and Geoenvironment Protection, Chengdu Univ. of Technol., Chengdu 610059, China
[2] Faculty of Geosciences and Environmental Eng., Southwest Jiaotong Univ., Chengdu 610031, China
[3] Chendu Hydroelectric Investigation and Design Inst., Hydropower Consulting Group, Chengdu 610072, China
来源：
Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition) | 2014年 / 46卷 / 03期
关键词：
Foundations - Hydroelectric power plants - Rocks - Rock mechanics - Unloading - Hydroelectric power;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In order to reveal the unloading relaxation characteristics of foundation rock mass after excavation in the middle-ground stress region, supplement the unloading relaxation theory of hydropower projects in western China, and provide scientific basis for the latter engineering treatment measures of Dagangshan hydropower station, the Dagangshan hydropower station was studied. Based on the study of geological background conditions and relying on field investigation and a large number of exploration drillings, geophysical exploration technics, hole camera technique, et al., the characteristics of foundation rock mass after excavation in the middle-ground stress region were discussed, including the supergene and the endogenous unloading relaxation phenomenon, which assume the fissures opening, rock mass loosening and entirety relaxation, but without any new rock failure. Meanwhile, the unloading relaxation characteristics of foundation rock mass were markedly controlled by the structure of rock mass in the middle ground-stress area.
引用
收藏
页码：7 / 14
相关论文
共 50 条
  • [1] The Arch Dam Foundation Rock Mass Unloading and Relaxation Deformation Characteristics and Their Monitoring Result Analysis
    Li Shi-sheng
    Dong Ze-rong
    Li Qi
    Zhao Hua
    Zhang Hui
    ADVANCES IN CIVIL ENGINEERING, PTS 1-6, 2011, 255-260 : 3514 - 3523
  • [2] Study on mechanical characteristics of the unloading rock mass
    Li, JL
    Xiong, JH
    Yang, XT
    FRONTIERS OF ROCK MECHANICS AND SUSTAINABLE DEVELOPMENT IN THE 21ST CENTURY, 2001, : 105 - 108
  • [3] Experimental study on the failure characteristics of high stress unloading rock mass induced by disturbance
    Zhao G.
    Liu C.
    Xu W.
    Meng X.
    Meitan Xuebao/Journal of the China Coal Society, 2021, 46 (02): : 412 - 423
  • [4] Study on unloading relaxation characteristics for rock masses under high geostress
    He, Gang
    Jiang, Changsen
    Lei, Yingcheng
    Liao, Wei
    Li, Biao
    PROGRESS IN INDUSTRIAL AND CIVIL ENGINEERING III, PT 1, 2014, 638-640 : 594 - +
  • [5] Study on unloading nonlinear mechanical characteristics of jointed rock mass
    Li, Jianlin
    Wang, Lehua
    Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 2007, 26 (10): : 1968 - 1975
  • [6] Study of micro-mesoscopic characteristics of marble fracture surface and correlation with unloading rock mass strength under high stress and unloading
    Huang Da
    Tan Qing
    Huang Run-qiu
    ROCK AND SOIL MECHANICS, 2012, 33 : 7 - 15
  • [7] Experimental Study on a Granular Material-Filled Lining in a High Ground-Stress Soft-Rock Tunnel
    Liu, Jie
    Wang, Bin
    Wang, Yansong
    Shi, Lei
    Xie, Xiaokang
    Lan, Jun
    APPLIED SCIENCES-BASEL, 2023, 13 (24):
  • [8] Study of the unloading characteristics of a rock mass using the triaxial test and damage mechanics
    Xie, HQ
    He, C
    INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 2004, 41 (03) : 366 - 366
  • [9] STUDY ON MECHANICAL PARAMETERS OF UNLOADING ROCK MASS
    Guo, Yongcheng
    Li, Jianlin
    Wang, Lehua
    Hu, Hailang
    RECENT DEVELOPMENT OF GEOTECHNICAL AND GEO-ENVIRONMENTAL ENGINEERING IN ASIA, PROCEEDINGS, 2006, : 575 - +
  • [10] Study on permeability of jointed rock mass after dynamic unloading of initial stress during rock excavation
    State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
    Yanshilixue Yu Gongcheng Xuebao, 2007, SUPPL. 2 (4158-4163):
12345