Monitoring and Analysis of Tension-Displaced Rock Mass during the Construction of Jinping Hydropower Station

doi:10.3969/j.issn.1001-5485.2014.11.0342014,31(11):177-181,188

Journal of Changjiang River Scientific Research Institute ›› 2014, Vol. 31 ›› Issue (11): 177-181.DOI: 10.3969/j.issn.1001-5485.2014.11.0342014,31(11):177-181,188

• ENGINEERNG DESIGN AND CONSTRUCTION MONITORING • Previous Articles Next Articles

Monitoring and Analysis of Tension-Displaced Rock Mass during the Construction of Jinping Hydropower Station

DENG Jian-hua¹,QIU Shan-ming¹,YANG Hong²

1. Power China Zhongnan Engineering Corporation Limited, Changsha 410014, China;
2. Jinping Construction Department, Yalongjiang Hydroelectric Development Co., Ltd., Chengdu 610021, China

Received:2014-08-01 Revised:2014-11-05 Published:2014-11-01 Online:2014-11-01

Abstract

Abstract: The left bank excavation slope of Jinping first stage hydropower station is remarkable of its height, scale and bad stability condition. The tension-displaced rock mass is comprised of several structural tectonic structural planes and is critical to the stability of the whole excavation slope. The safety monitoring for the tension-displaced rock mass is introduced. Overall analysis on the time evolution and spatial distribution of the tension-displaced rock mass is conducted by using correlation, factors analysis, and eigenvalues statistics according to geological conditions and construction information. The monitoring data of surface, shallow and deep deformation suggest that the tension-displaced mass is consistent with the overall slope deformation characteristics after excavation and support, and after six years of tests, it has gradually stabilized.

Key words: tension-displaced rock mass, monitoring during construction, influence factors, comparative analysis, deformation features

CLC Number:

TU457

DENG Jian-hua,QIU Shan-ming,YANG Hong. Monitoring and Analysis of Tension-Displaced Rock Mass during the Construction of Jinping Hydropower Station[J]. Journal of Changjiang River Scientific Research Institute, 2014, 31(11): 177-181.

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Monitoring and Analysis of Tension-Displaced Rock Mass during the Construction of Jinping Hydropower Station

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