水库地区路基断面设计与防渗设计

Section Design and Seep Proof Design for Subgrade in Reservoir Area

设计水库路基时,应根据水库的运行特点,考虑库水浸泡、渗透、水位升降、波浪侵袭、水流冲刷、库岸坍塌、水库淤积和地下水壅升引起的湿陷等影响。通过工程实例,分析了造成库区路基病害的原因,从填土造地、渗透稳定、滑坡治理、塌岸防护等综合治理和综合利用的原则出发,探讨了库区新建路基和改造路基的形式及构造,研究了路基本体和地基的渗流计算分析与控制方法,详细阐述了各种路基断面形式、防渗设施布置形式以及路基填料等在不同水位差条件下的适用性和有效性。

In the design of reservoir subgrade, some influences such as soakage, seepage, water-level fluctuation, wave attack, water erosion, reservoir bank ruin, reservoir siltation and wet subsidence caused by groundwater mound, should be taken into account. By the analysis of engineering cases, the causes of reservoir subgrade disease are summarized in this paper. On the basis of the principle of integrated harness and development, including backfill making fields, infiltration stabilization, landslide control, bank ruin prevention and so on, reservoir subgrade forms and structures in new building and rebuilding are explored. The seepage computation and control method of embankment and foundation are studied, the applicability and effectiveness of the various cross forms of embankment, the arrangement form of impervious element and the various kinds of embankment fillings under the conditions of different water-level lift are also thoroughly expounded.