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- roof falling instability 冒顶失稳
- The roof fell before he had time to rush out. 他还没有来得及跑出来,房顶就塌了。
- The miners were entombed in the cave when the roof fell in. 塌顶时矿工们被埋在坑内。
- Roof falling of rock bolting supported tunnel is usually paroxysmal in a big area, so safety monitoring is of great importance. 锚杆支护巷道顶板冒落具有突发性和冒落面积大的特点,安全监测非常必要。
- Through contrastive analysis for several roof falling accident in bolting tunnel,obtains some objective and subjective factors of the accident. 通过对几起锚杆支护巷道冒顶事故的对比分析,得出了发生事故的一些客观和主观影响因素。
- Part roof fall accident cause is analyzed in flase top mining in No.5 Coal Seam of Pinggang Coal Mine.The prevention and cure measures are pointed out. 通过对平岗煤矿5%23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。
- On the basis of spot investigation,the reason of sloughing and roof fall is analyzed,the technology measure is pointed out. 根据对工作面地质条件和现场的实际观察研究,对工作面片帮、冒顶现象的发生原因进行了分析,提出了预防片帮、冒顶的技术措施。
- The II3123 face is a light type caving face of three-soft coal seam.the roof is cracked,sloughing and roof fall often occur. 石台煤矿II3123工作面为"三软"煤层轻放工作面,顶板破碎易掉,片帮、冒顶时常发生。
- The roof fell about my ears. 层顶就在我的身旁坍下来。
- The roof fell beforehe had time to dash into the room to save his baby. 他还没来得及冲进房间把孩子救出来,房顶就塌了。
- The roof fell in. 屋顶塌陷了。
- Abstract: This paper discribes the principle of rook acoustic emission techniques.Some applications such as insitu rock stress measuring,locating high stress zone,predicting roof falling and evaluating rook stability are presented. 文摘:论述了岩体声发射技术的基本原理，介绍了其在采矿工程中的若干应用成果：地应力测量、高应力区圈定、冒顶预测预报、稳定性评价。
- On the basis of the investigation,with the rockmass mechanics and numerical simulation, the mechanism of roof falling of stope and mined out area on a large scale are discussed compendiously. 根据近几年对石膏矿山的现场调查,结合岩体力学的相关理论和数值模拟技术,对石膏矿采场顶板冒落及大规模采空区顶板冒落机理作了简要探讨,据此提出了预防采空区冒落的措施。
- She and I can't live under the same roof. 她和我不能住在一起。
- The geologic hazards in Huatong copper mine in Wafangdian, Liaoning Province involve tailing dams, seawater invasion, surface collapse, water bursting from pit, wallrock deformation and roof falling. 摘要华铜矿矿山主要有尾矿坝、海水入侵、地面塌陷、矿井突水、滑坡、围岩大变形冒顶等地质灾害。
- During mining, the stress behaviors of workface are very obvious.Thin rock strata of roof fall by full thick, procreant cranny reach the earth's surface and have clearly sidesteppedsubsidence. 在回采过程中，工作面矿压显现比较明显，顶板基岩沿全厚切落，产生的裂隙通达地表并有明显的台阶下沉。
- During mining, the stress behaviors of workface are very obvious.Thin rock strata of roof fall by full thick, procreant cranny reach the earth's surface and have clearly sidestepped subsidence. 在回采过程中，工作面矿压显现比较明显，顶板基岩沿全厚切落， 产生的裂隙通达地表并有明显的台阶下沉。
- The storm caused the roof to fall in. 暴风雨把屋顶搞塌了。
- You'll break your neck if you fall off the roof. 你要是从屋顶上跌下来会摔死的。
- He has a knack of falling out with everyone. 他有个怪癖，总是和每个人吵架。
