The mechanism of the large area caving is explored.
针对陕北府谷县郭家湾煤矿的浅埋煤层开采,通过对开采方法的研究,采用有限元仿真试验模拟方法,对实际采用的隔离煤柱和区内煤柱留设的不同方案进行了计算模拟试验,研究了采场煤柱群及上覆岩层的稳定性,探讨了造成大面积垮落灾变的机理,为陕北浅埋煤层以及西部类似条件下中小矿山合理、安全、经济的开发提供了重要的参考依据。
The Theoretical Study on Cyclone Disaster Caused by Stope Roof Falling over Great Extent;
采场顶板大面积垮落的飓风灾害的理论研究
Research on Air Bumping Disaster Induced by Large Roof Falling in Goaf
采空区顶板大面积垮落的空气冲击灾害研究
Roof breaking law along top-coal caving face
综放开采沿工作面倾向顶板垮落规律
Following the Mama Bongisa advice, they mounded the earth to get as much surface area as possible and to prevent Kinshasa's harsh rains from flooding the beds.
按妈妈促进会的建议，他们堆起土，尽可能地扩大面积并防止金沙萨的暴雨冲垮菜地。
Design and Construction of Large Area, High-Drop Deep Foundation Pit Excavation Shoring for Shanghai World Expo Center
上海世博会世博中心大面积、大落差深基坑支护设计及施工
Large area of spalling accured on the work layer of high-Crcentrifugal cast iron roll after heat treatment.
高铬离心复合铸铁轧辊辊身工作层在热处理后发生大面积剥落。
When a big man's body started going, it fell apart quickly.
个子高大的人，身体原是一垮就垮的。
(2) The area, location (position) and boundary lines of the building property (with a map attached);
（二）房产面积、座落（位置）和界线（并附图）；
It includes about two-hundred hectares of rolling hills.
坐落在面积约200公顷蜿蜒起伏的小山。
Our defense is crumbling from within.
我们的防卫从里面垮了。
a large bomb used to demolish extensive areas.
毁坏大面积的大炸弹。
Study on Uniform Deposition of Spherical Diamond Film on a Large Area Substrate
大面积球面金刚石膜的均匀沉积研究
A long rail trip and an Atlantic crossing could knot him all up and maybe disable him.
乘火车长途旅行，加上横渡大西洋，可能把他拖垮了，说不定就此落得个残废。
The Suez debacle in 1956 was a sudden eye-opener to the decline of British power in the eastern Mediterranean.
1956年苏伊士运河事件上的垮台，突然使世人恍然大悟，看出英国在东地中海的地位衰落了。
The oil film trajectory oscillates back and forth with the ebb and flood current, and its thickness decreases and area increases during the drift process with oscillation due to the diffusion.
油膜轨迹随落潮流和涨潮流来回振荡，因扩散作用，在往复漂移过程中厚度变小，面积增大。
In addition, there is the deposition of very small particles which descend very slowly over large areas of the earth's surface.
此外，还有由十分微小的颗粒组成的沉降，它们以很慢的速度降落在地球的很大面积上。
In addition, there is the deposition of very small partical which descend very slowly over large areas of the earth's surface.
此外，还有由十分微小的颗粒组成的沉降，它们以很慢的速度降落在很大面积上。
Sukarno's palace was painted a spotless white and set in the middle of hundreds of acres of exotic gardens.
苏加诺的宫殿粉刷得雪白无暇，座落在一片面积达数百英亩的仙境般的大花园中央。
