شماره ركورد كنفرانس :
4345
عنوان مقاله :
Field Seepage Tests on Discontinuity Structural Rocks in a Hydropower Project
پديدآورندگان :
Liu Sihong sihongliu@hhu.edu.cn Hohai University , Zhou Bin Hohai University , Weng Liping Hohai University , Jiang Meiqi Zhejiang Hua Dong Construction Engineering Co., LTD , Xiong Hanwen Water Resources Pearl River Planning Surveying Designing Co., LTD
كليدواژه :
In , situ seepage test , permeability characteristic , rock discontinuity structural plane
عنوان كنفرانس :
چهارمين كنفرانس بين المللي رفتار بلند مدت و فن آوري هاي نوسازي سازگار با محيط زيست سدها (LTBD2017)
چكيده فارسي :
The permeability characteristics of the structural planes inside rock masses are of importance for the stability of hydropower station projects. In this paper, a large-scale in-situ seepage testing method was proposed and applied to the tests on the gently dipping structural plane (C2 zone) and the steep fault (F14) in the construction field of one hydropower station in China. The in-situ test results were compared with those of both the undisturbed and the reconstituted specimens. The test results indicate that the proposed in-situ testing method can be effectively used to determine the permeability characteristics of structural planes under the natural stresses with a relatively high accuracy. The critical hydraulic gradient of the structural planes is influenced by the natural stress of the surrounding rock mass, which cannot be reflected in the tests on the undisturbed and the reconstituted specimens.