For the sake of researching shoring technology in the profundity alluvium, introduced Vertical additional Force and devising well structure.
为了研究深厚冲积层井简的支护技术，引入竖向附加力，进行井壁结构设计。
For the sake of researching shoring technology in the profundity alluvium, introduced Vertical additional Force and devising well structure.
为了研究深厚冲积层井简的支护技术，引入竖向附加力，进行井壁结构设计。
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