2) false top
托伪顶
1.
The false top is that the existence pole exchanges weak caving rock stratum between the coal seam and direct top,In the coal mining,it may often happen.
通过对平岗煤矿5#煤在托伪顶回采时发生的局部冒顶事故原因的分析,提出了解决该问题的防治措施。
3) roof solidified
伪顶加固
1.
Kailuan Qianjiaying Coal Mine summarizes a suit of conjoint method of roof solidified and fore support,that settles problem of thick false top and creates finer economy benefit and society benefit in the process of production and practice.
开滦钱家营煤矿在生产实践中,总结了一套伪顶加固和超前支护相结合的方法,解决了伪板厚的问题,创造了好的经济效益和社会效益。
4) false-hard roof
伪硬顶
1.
The composition of the roof rock has a great influence on the stability of the roadway surrounding,especially for those roadway with the false-hard roof,which will be easily weathered or be weakened when encountering water.
不同顶板岩性组成对巷道围岩稳定性影响很大,特别是对遇水软化、风化程度高的伪硬顶板,必须区别对待。
5) draw slate
板岩伪顶
6) false roof rock
伪顶岩石
补充资料：慝伪
1.奸伪。
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