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| STUDY OF KEY TECHNOLOGIES OF USING ANISOTROPIC SOFT ROCK TO BUILD HIGH CONCRETE FACE ROCKFILL DAM |
| ZENG Zeng1，2，SHEN Guihua2，WANG Qiujie3，ZHANG Zehui2，DANG Faning1 |
(1. Institute of Geotechnical Engineering，Xi?an University of Technology，Xi?an，Shaanxi 710048，China；
2. Zhejiang Design Institute of Water Conservancy and Hydroelectric Power，Hangzhou，Zhejiang 310002，China；
3. Hangzhou Architectural Design and Research Institute，Hangzhou，Zhejiang 310001，China) |
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Abstract First the concept of anisotropic soft rock in concrete face rockfill dam construction(CFRD) is put forward，and it is different from hard and soft rocks in traditional sense. By studying the anisotropy of soft rock(schist stone for example)，and its derivatives heap chlorite，the physico-mechanical properties of anisotropic soft rock were given in the paper. On the basis of partition map of hard rock，sand and gravel dam，primary partition map of anisotropic soft rock dam and associated construction measures have been proposed. Taking a hydropower station CFRD project in Xinjiang，for example，combined with the special topographic and geologic conditions，a 3D model for the standard cross-section with three kinds of partition was built. Also numerical simulation based on nonlinear finite element method(FEM) was done. The results were analyzed and compared，and the recommended solutions were given to make full use of local anisotropic soft rock.
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Received: 04 June 2013
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2014, Vol. 33 
