青石壁贮灰场主坝坝面渗水原因分析及 加固方案研究

新余发电厂青石壁贮灰场经过13年的长期运行，排渗褥垫发生淤堵，导致初期坝坝底排渗 褥垫渗透系数减小。此外，初期坝施工时上坝料不均匀，存在局部块石集中的情况会形成集中渗漏通 道，或在坝体内形成水平分层，导致高水位运行期间库水沿渗漏通道或水平分层流出，从而造成主坝 坝面大面积渗水。从解决浸润线位置偏高，方便施工的角度出发，通过渗流和稳定计算分析，经比较 本次渗漏治理加固方案最终采用贴坡排渗，并放缓坝坡。

Study on causation of surface seepage of main dam for Qingshibi Ash Storage Yard and its strengthening scheme

Qingshibi Ash Storage Yard of Xinyu Power Plant has been used for a long period of 13 years,and then the blanket drainage system is somewhat silted up,so that the permeability coefficient of the initial drainage blanket system is reduced.Moreover,leakage passages or horizontal layers are formed there inside by the local concentration of blocks due to the non-uniformity of the construction material used during the initial construction;by which seepages are caused to occur along the leakage passages or horizo...