砾土砾类土的一种,在GBJl45-90标准中,砾类土中细粒(<0.075毫米)含量少于5%的土。按级配情况又可分为级配良好砾(同时满足Cu≥5、Cc=1~3两个条件)和级配不良砾(不同时满足Cu≥5、Cc=1~3两个条件)。
适用于砂性土层和砂砾土层的深基坑边坡支护。
分析天然砂砾土在公路路面基层施工中的成功应用,闹述一种合理利用当地自然资源的途径。
Analyze the natural grit's successful application in the construction of the expressway pavement and expound a way that make use of locally natural resources.
它们是树龄、林分密度、割脂、降雨量、温度、粘性土、石砾土、土层瘠薄、积水、病虫危害。
These were tree age, stand density, resin tapping, rainfall, temperature, clay soil, stone soil, soil depth, water logging, and other diseases and insect pests.
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