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1)  roof fall over great extent
顶板大面积冒落
1.
Study on the rule caused by roof fall over great extent of worked-out area in mine;
采空区顶板大面积冒落规律研究
2)  weighting over great extent
大面积顶板冒落
1.
The prediction of the hazard caused by weighting over great extent of top layer in mine worked-out section area;
本文建立了采空区大面积顶板冒落造成的冲击气浪的最大速度预测模型。
3)  roof falling over great extent
顶板大面积垮落
1.
The disaster of stope roof falling over great extent, happening in the coal face during the course of mining, brings about such comprehensive destruction as energy damage, load lash and cyclone damage.
采场顶板大面积垮落的灾害是在采矿过程中工作空间存在的一种包括能量破坏、动载冲击和飓风破坏的综合性矿山现象,造成的破坏非常大。
4)  large roof falling
大面积顶板垮落
5)  roof collapse
顶板冒落
1.
Based on the the fully-mechanized top-coal caving mining of 8~# coal bed in Kangjiatan coal mine,the probability of the gas explosion induced by the impact-friction sparks during roof collapse was studied with the special designed experimental instruments.
针对康家滩煤矿8#煤层综放开采条件,采用专门设计的实验装置对其顶板冒落撞击摩擦火花引爆瓦斯的可能性进行了实验研究。
2.
The analytical reason of the subsidence is that old working roof collapse strengthen the vertical morenent of underground water between coal-series formation and Quaternary loose formation, the strong drain of coal mining in the area intonsify the erosion and transporting action of underground water, the Quaternary carity forms and the earthquake cause to ha.
21"塌陷经过和区域地质环境概况的论述,提出了其塌陷成因是由于古窑采空区顶板冒落沟通了煤系地层和第四系松散层间的地下水运动,加之区内采煤强力疏干加剧了地下水的侵蚀搬运作用,从而形成第四系松散层间的空洞,因地震诱发塌陷的观点。
3.
For roof collapse control of the belt-conveying-roadway of No.
以枣泉煤矿12205首采面胶带运输巷顶板冒落控制为背景,采用弹性力学理论计算和数值分析方法,对复杂条件下大断面巷道顶板冒落失稳机理进行分析。
6)  Roof caving
顶板冒落
1.
Roof pressure,structure,water volume,support deformation that are related to the roof caving mechanism are analyzed.
通过对与顶板冒落机理有关的顶板压力、构造、涌水量、支架变形等进行分析,提出了具体的防治措施,指出随着新地质情况的出现,加强新技术、新方法研究的重要性。
2.
In order to solve the problem of roof caving of orebody in deep broken zone of Kangjiawan mine so as to realize safety mining,we performed the mechanical experiment of rocks,compared and numerically simulated the roof controlling measures,tested the mechanical parameters of rocks,analyzed and classified caving phenomenon.
为解决康家湾深部破碎带矿体顶板冒落问题,实现矿体安全回采。
补充资料:冒天下之大不韪
1.语本《左传.隐公十一年》:"犯五不韪,而以伐人,其丧师也,不亦宜乎?"后以"冒天下之大不韪"谓公然干普天下都认为是最大错误的事。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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