The engineering practice has proved that these methods solved successfully the problem of great caliber drilling in weakly weathered rigidrock by hydraulic piling rig.
工程实践证明，这些方法成功地解决了上述条件下弱风化硬岩中大口径钻进的难题。
2
It lacks liquefied homogeneous layers compared with the preexisting normal succession. This may reflects the fracturing mechanism of the more rigidrock body with higher solidification degree.
与已有的标准序列比较，缺乏液化均一层段，这可能反映了固结程度较高的较刚性岩体的破裂机理。
3
Once I opened my eyes and saw Japhy sitting there rigid as a rock and I felt like laughing he looked so funny.