风钻勘探只适用于持力层为灰岩的人工挖孔桩基础。一、施工方法1.程序首先用物探或钻探勘测出地形地貌,了解持力层是否有较大的熔隙、熔沟或熔洞等及其分布位置。对坐落在该处的桩先采用技术处理(可采用高压喷浆法加固地基、穿岩法穿过熔隙、双桩抬法跨过熔隙或局部改变建筑 Wind drill exploration is only applicable to manual digging pile foundations with limestone bearing. First, the construction method 1. The program first uses geophysical exploration or drilling to survey the topography and landforms, to understand whether the bearing layer has a larger gap, melting ditch or melting hole and its distribution. For the piles located here, adopt technical treatment (high-pressure grouting method can be used to reinforce the foundation, rock-through method can pass through the gap, double-pile method can be used to cross the gap or locally change the building.