1) unexpected falling cap plate
超前掉顶
2) fore-support
超前护顶
4) advanced break-tip blast
超前断顶爆破
1.
The stress monitor indicated that the roof advanced break-tip blast destroyed the structure of roof key layer,increased the roof crevasse degree,improved the distributed characteristic of stress field caused by mining.
本文研究了断顶爆破的基本原理、爆破参数、爆破工艺流程,制定出完善的断顶爆破方案,并成功实施了超前断顶爆破。
5) advance caving technology
超前放顶技术
6) Advanced grouting and builting top
超前注浆造顶
补充资料：摆掉
1.摇动﹐摇摆。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条