土工合成材料在辽宁省水利工程中应用效益分析

The Application Benefit Analysis of Geotechnical Engineering Composite Material in Hydraulic Engineering

截止2003年辽宁省水利工程中应用土工合成材料已达1450万多m2,尤其在河道护岸、堤(坝)护坡、防渗工程上这种新型工程材料得到了广泛应用。结合辽宁省水利工程上应用的实际 ,对其效益进行了分析 ,分析结果表明 :采用土工织物软体排护岸比传统柴排护岸节省投资35 %～80% ;堤坝护坡采用土工织物滤层比传统砂砾料滤层节省投资30%以上 ;土工膜防渗可比粘土防渗节省投资30 %～50%。同时还取得了保护生态平衡、节省能源、促进化纤工业发展等十分显著的社会效益。

According to the statistics in Liaoning Province hydraulic engineering before2003,the geotechnical engineering composite material had been used more than7,500,000m 2 .This kind of new engineering material has been widely used in river bank protecˉtion,levee(dam)slope protection and seepage prevention engineering.Based on the actual application in Liaoning Province hydraulic engineering,the benefit was analyzed.The analytical results show that adopting geotechnical engineering textile bank protection can save the investment35%～80%compared with traditional fascine revetment;using geotechnical engineering textile filter in bank proˉtection can save the investment more than30%compared with traditional sand and gravel filter;applying geomembrane seepage preˉvention can save the investment30%～50%compared with clay seepage prevention.At the same time it has produced remarkable soˉcial benefits in protecting ecological balance,saving energy and promoting the development of chemical fiber industry etc.