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Abstract Geo-environment characteristics and disease types of the sites located in watery rock and soil in South China were analyzed for the prevalent geological diseases were water-caused trouble，instability of the surrounding rock and the change of environment. Among the diseases，water-caused trouble was primary important，so the key of the conservation measure was to control the water. Since the cultural site is regarded as primary source，its conservation engineering is different from the ordinary geotechnical engineering. The conservation measures are decided by the geo-environmental condition of the site. Then basically technical scheme and the key technical problem of the conservation engineering are proposed. The mausoleum site of Yue Kingdom in Yinshan was taken as an example. After analyzing the hydrogeological conditions，the stereographic projection and the block limit equilibrium method are adopted to calculate the stability of the slope in the tomb pit. Drip of the polymer chemical material and short anchor to reinforce the slop are proposed. Finally，the hydrogeological model of the site region is extablishedestablished，and method of waterproof blanket and blind ditch to control the water is proposed. It was proven by practical engineering.
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Received: 08 November 2008
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