垃圾坝的HDPE土工膜边坡稳定分析

垃(la)圾(ji)卫(wei)生填埋(mai)场垃(la)圾(ji)坝(ba).填埋(mai)区侧墙(qiang)边(bian)(bian)坡(po)均采(cai)用HDPE土(tu)(tu)(tu)(tu)(tu)工(gong)(gong)膜防(fang)渗.垃(la)圾(ji)坝(ba)的HDPE土(tu)(tu)(tu)(tu)(tu)工(gong)(gong)膜边(bian)(bian)坡(po)稳(wen)定性(xing)分(fen)析(xi)与(yu)一般水利工(gong)(gong)程(cheng)挡水土(tu)(tu)(tu)(tu)(tu)石坝(ba)相同(tong).HDPE土(tu)(tu)(tu)(tu)(tu)工(gong)(gong)膜边(bian)(bian)坡(po)稳(wen)定性(xing)分(fen)析(xi)因为HDPE土(tu)(tu)(tu)(tu)(tu)工(gong)(gong)膜斜墙(qiang)靠近上游坝(ba)坡(po)，所以HDPE土(tu)(tu)(tu)(tu)(tu)工(gong)(gong)膜边(bian)(bian)坡(po)稳(wen)定性(xing)分(fen)析(xi)采(cai)用了我国土(tu)(tu)(tu)(tu)(tu)工(gong)(gong)合成材(cai)料应用技术规范推荐(jian)的极(ji)限平衡法.HDPE土(tu)(tu)(tu)(tu)(tu)工(gong)(gong)膜边(bian)(bian)坡(po)稳(wen)定性(xing)分(fen)析(xi).

可参(can)照垃(la)圾(ji)坝HDPE土工膜边坡稳定分析方法计(ji)算填埋区侧(ce)壁边坡稳定计(ji)算.边坡HDPE土工膜破坏方式为：

1.从锚固(gu)沟(gou)向下滑(hua)动。这(zhei)种(zhong)损伤(shang)通常发生在HDPE土工(gong)膜铺设时(shi)，但(dan)HDPE土工(gong)膜与斜坡之(zhi)间的摩擦可(ke)以阻(zu)止斜坡上HDPE土工(gong)膜的滑(hua)动。同(tong)时(shi)，HDPE土工(gong)膜与锚固(gu)沟(gou)壁(bi)的摩擦和锚固(gu)沟(gou)的锚固(gu)作用也可(ke)以阻(zu)止HDPE土工(gong)膜的滑(hua)动。

2.由于(yu)垃(la)圾(ji)(ji)填(tian)(tian)埋过(guo)程中(zhong)压(ya)(ya)实(shi)(shi)(shi)密度(du)小(xiao)(一般(ban)(ban)只(zhi)有800~1000kg/m3).孔隙(xi)度(du)大.垃(la)圾(ji)(ji)堆沉降大(10%~20%).垃(la)圾(ji)(ji)填(tian)(tian)埋过(guo)程中(zhong)的(de)压(ya)(ya)实(shi)(shi)(shi)密度(du)小(xiao)(一般(ban)(ban)只(zhi)有800~1000kg/m3).垃(la)圾(ji)(ji)填(tian)(tian)埋过(guo)程中(zhong)的(de)压(ya)(ya)实(shi)(shi)(shi)密度(du)小(xiao)(垃(la)圾(ji)(ji)填(tian)(tian)埋过(guo)程中(zhong)的(de)压(ya)(ya)实(shi)(shi)(shi)密度(du)小(xiao)).垃(la)圾(ji)(ji)填(tian)(tian)埋过(guo)程中(zhong)的(de)压(ya)(ya)实(shi)(shi)(shi)密度(du)大(垃(la)圾(ji)(ji)填(tian)(tian)埋过(guo)程中(zhong)的(de)压(ya)(ya)实(shi)(shi)(shi)密度(du)小(xiao)).垃(la)圾(ji)(ji)填(tian)(tian)埋过(guo)程中(zhong)的(de)压(ya)(ya)实(shi)(shi)(shi)密度(du)大)。