Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/76395
Title: Stability investigation and stabilization of a heavily fractured and loosened rock slope during construction of a strategic hydropower station in China
Authors: Chen, T
Deng, JH
Sitar, N
Zheng, J
Liu, TX
Liu, AJ
Zheng, L 
Keywords: Huangjinping hydropower station
Rock slope
Stability
Local tectonic uplift
Relaxation
Issue Date: 2017
Publisher: Elsevier
Source: Engineering geology, 2017, v. 221, p. 70-81 How to cite?
Journal: Engineering geology 
Abstract: This paper presents a case history of the 205 m high intake slope at the Huangjinping (HJP) hydropower station on the Dadu River. Deformation and cracks developed on the cut slope during excavation, and the deformation extended onto the natural slope above the cut, giving rise to serious safety concerns. Research was conducted to study the engineering geological conditions and the deformation characteristics of the slope during excavation. In situ monitoring data and possible causes of cracking were analyzed. The results show that the zone of loosened rock mass extended much deeper into the rock mass than it did at other sites in the region because of the tectonic history of the site and cutting. The empirically designed cable anchors with lengths of 40 m or 45 m were insufficient to stabilize the slope, while the remedial cable anchors as long as 100 m successfully stabilized the slope. The analytic method and procedure used in this paper could be useful to similar projects.
URI: http://hdl.handle.net/10397/76395
ISSN: 0013-7952
EISSN: 1872-6917
DOI: 10.1016/j.enggeo.2017.02.031
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