北江大堤石角堤段防渗工程效果分析

 广东省北江大堤石角堤段为强透水地基，历史上汛期多有险情发生。该堤段采用高喷截渗墙、填砂压渗、反滤排渗体、减压井等工程措施进行防渗加固处理。工程实施后经过多次洪水检验，石角堤段均可安全度汛，未出现严重险情，但也存在一些隐患。通过实测资料分析和渗流场模拟计算，分析各种防渗措施的功效，认为压渗减压工程对本堤段防渗是有效的，并对大堤的防渗安全进行评价，为堤防的防渗建设提供参考。

EFFECT ANALYSIS OF PREVENTING SEEPAGE ENGINEERING IN SHIJIAO SEGMENT OF NORTH RIVER LEVEE

Because the foundation of Shijiao segment of North River Levee is made up of the strong permeable layers, the dangers happened many times during historical flood periods. In order to raising the ability of preventing flood,many reinforcement measures are adopted,including constructing the high pressure-injected cut off walls,counterweight filling,building filtration and drainage structure,relief wells,etc. After the construction,the Shijiao segment stands the tests of floods many times. But the parts of effect of the measurements are arguable. The article is just right about the evaluation of these measurds by analyzing the data of field observations and simulating the seepage field,and a conclusion is drawn that the counterweight filling engineering is effective for this segment. The safety of preventing seepage is appraised. The conclusion is worthy of reference for the designers and managers.