所以在这种地层中施工，利用泥浆回灌钻孔技术有效地平衡松散层压力不使其垮塌尤为重要。

So in such a formation construction, it is important to use the technology of drilling mud back to tank to balance the pressure of the loose layer and prevent the borehole collapse.

youdao

所以在这种地层中施工，利用泥浆回灌钻孔技术有效地平衡松散层压力不使其垮塌尤为重要。

So in such a formation construction, it is important to use the technology of drilling mud back to tank to balance the pressure of the loose layer and prevent the borehole collapse.

youdao