1) deep hole-pre-grouting in tunnel
洞内深孔预注浆
2) deep hole grouting in the tunnel
洞内深孔注浆
3) Deep Hole Pregrouting
深孔预注浆
4) Water blocking with medium-length hole pre-grouting
中深孔预注浆
5) deep hole grouting
深孔注浆
1.
This paper introduces the method of blocking water and strengthening of the surrounding rock with deep hole grouting, which not only ensures construction safety, but also protect water resources.
介绍了采用地表深孔注浆固结止水方法加固围岩,既可保证施工安全,又能保护水资源。
补充资料：内深
1.谓内心严酷。
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