There are some earth caves and karst in the airfield runway subgrade of some newly constructed airport, and the bearing capacity of the overburdensoil in the subgrade is low.
某新建机场滑行道路基中存在土洞和溶洞，且路基上部土层承载力低。
2
Soil survey should be adopted in such soiloverburden areas.
在此类土壤覆盖区应采用土壤测量。
3
During overburden stripping construction, we have successfully practiced excavation, graded stockpiling and comprehensive utilizing technology for soil layer, mud or muddy clay.