Natural gravel is rich natural resources and also better stable compacting roadbed material in the river courses of mountain areas.
天然砂砾料是山区河道中丰富的自然资源，也是压实后稳定性良好的路基填筑材料。
Research of static correction method and investigation technology about the surface stratum structure of huge thick gravel area of front-zone of mountain.
山前带巨厚砾石区的表层结构调查技术及静校正方法研究。
Under multi-wind directions, the energy exchanging and material transporting repeatedly happened between gravel gobi and the Mingsha Mountain.
多风信条件下，沙砾质戈壁与鸣沙山进行着往复式的能量交换及物质运动。
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