进行稳定计算之前,首先要研究一下土料保护层滑动时滑裂面的形式、位置、起点以及作用于滑动体上的各种力等等,据此拟定出保护层稳定分析的计算模型。一、滑裂面的形式、位置与起点 1.滑裂面的形式。塑膜防渗渠道的土料保护层一般不厚,且土料与塑膜接触面上的抗剪强度又很低,一般来说这个面上的土体abce极易产生滑动,进而推动下块土体 Before carrying out the stability calculation, we first need to study the form, position, starting point and various forces acting on the sliding body when the protective layer slides, and then formulate the calculation model of the stability analysis of the protective layer. First, the form of slip surface, location and starting point 1. The form of slip surface. Impervious channels plastic soil protective layer is generally not thick, and soil and plastic film contact surface shear strength is very low, in general, this surface of the soil abce easily slip, and then promote the block Soil