RESEARCH ON REASON OF ROCKMASS DIFFERENCE BETWEEN DALIUSHU AND XIAOGUANYIN DAM SITES ON HEISHAN GORGE OF YELLOW RIVER
Li Xuefeng1，Han Wenfeng1，2，Chen Wenwu1，Liang Qingguo1
(1Research Institute of Geological Engineering，Lanzhou University， Lanzhou 730000 China) (2Tianjin Institute of Urban Construction， Tianjin 300381 China)
Abstract：The Daliushu dam site and the Xiaoguanyin dam site are both located on the Heishan Gorge of Yellow River. There is just a distance of 48 km between them. They also share rockmass of layers of metamorphosed feldspar-quartz-sandstone and phyllite. Large quantities of research and investigation materials show obvious difference between their rock mass quality. After contrast analysis on the rockmass wave velocity，grading of rockmass quality and permeability of dam base rockmass，the difference of rockmass quality between the two dam sites is analysed，and it is pointed out that the seism-dynamical damage is the primary cause for the formation of large scaled relaxed rockmass. Thus it is also the primary reason for rock mass difference of the two dam sites.
李雪峰1 韩文峰1，2 谌文武1 梁庆国1. 黄河黑山峡大柳树坝址与小观音坝址岩体质量差异的原因探讨[J]. 岩石力学与工程学报, 2003, 22(S2): 2551-2554.
Li Xuefeng1，Han Wenfeng1，2，Chen Wenwu1，Liang Qingguo1. RESEARCH ON REASON OF ROCKMASS DIFFERENCE BETWEEN DALIUSHU AND XIAOGUANYIN DAM SITES ON HEISHAN GORGE OF YELLOW RIVER. , 2003, 22(S2): 2551-2554.
2003, Vol. 22 
