查询词典 roof caving

Roof was caving in, it seemed to our company a merger might be the only way out.

1981年，我们的情况岌岌可危，同另一家公司合并似乎是我们公司唯一的出路。

In 1981, as the roof was caving in, it seemed to our company a merger might be the only way out.

1981年，我们的情况岌岌可危，同另一家公司合并似乎是我们公司唯一的出路。

In the induction caving roof, the quantitative inspection have been done by the digital digital panoramic borehole camera system. The quantum study are applied to inspecte the crack occurrence and width from the corresponding relation between 3-D image and its spatial coordinates. And the system provide the method to calculate, account and analysis of the crack parameter.

采用数字式全景钻孔摄像系统宏观探测顶板围岩在耦合诱导致裂失稳崩落的裂隙形态，从裂隙的三维图像与空间坐标关系，对裂隙的产状、隙宽和迹长等参数进行了定量的数字化探测、处理与还原。

The reseach results provide that, to the sysytem of digital panoramic borehole camera, it is a effective method to detect the crack occurrence, width and length from the visible and quantitative. It is advantage to handle emptied areas throught induce fracturing caving in the roof, it is saied the induce couple technology of mining and blasting.

分析结果表明，数字式全景钻孔摄像系统可以直观可视和定量精细描述裂隙的形态，回采扰动和强制爆破诱导耦合技术，从裂隙发育、扩展以及裂隙的演化，有利于顶板围岩致裂失稳崩落，从而形成诱导崩落顶板处理空区的目的。

The selection principle of the roof control parmeters is introduced at the blasting caving coal face in three soft coal seam.

介绍了三软不稳定煤层炮采放顶煤工作面顶板控制参数的选择原则。

Based on the theory of"S-R"stability for the voussoir beam, the paper analyses the mechanics boundary condition, the distribution features of displacement and stress fields, the relationship between working resistance of supports and roof-to-floor convergence, roof stability in tip-to-face area in fully mechanized mining with sublevel caving etc.

论文视直接顶为可变形体，得到直接顶岩层破断角的大小和直接顶的强度及高度有关，传统的P一Δl双曲线关系并不适用于直接顶的高度成倍增加以后的情况。

The secretary of the Province of New Netherland, writing in Dutch, in 1650, for the information of those who wished to take up land there, states more particularly that those in New Netherland, and especially in New England, who have no means to build farmhouses at first according to their wishes, dig a square pit in the ground, cellar fashion, six or seven feet deep, as long and as broad as they think proper, case the earth inside with wood all round the wall, and line the wood with the bark of trees or something else to prevent the caving in of the earth; floor this cellar with plank, and wainscot it overhead for a ceiling, raise a roof of spars clear up, and cover the spars with bark or green sods, so that they can live dry and warm in these houses with their entire families for two, three, and four years, it being understood that partitions are run through those cellars which are adapted to the size of the family.

一六五0年，新尼德兰州州秘书长用荷兰文写过一段话，更加详细地告诉预备往那里移居的人说，在新尼特兰的人，特别在新英格兰的人，起初是无法按他们的愿望建造农舍的，他们在地上挖个方方的地窖似的、六七英尺深的坑，长短随便他们自己，然后在墙壁上装上木板，挡住泥土，用树皮合缝，以免泥土落下来，当然也有用了别种材料的，还用木板铺了地板，做了天花板，架起了一个斜桁的屋顶，铺上树皮或绿草皮，这样他们全家可以很温暖很干燥地在里面住上两年、三年，或者四年，可以想象，这些地窖中，还隔出了一些小房间，这要看家里的人口数目了。

Based on the results of underground observations and model tests of simulated materials of immediate roof, it is expounded that fragmented roof belongs in cataclastic rock mass,and its caving characteristics is clarified in this paper too.

本文根据直接顶岩体冒顶现场实测和相似模拟实验结果，阐明综采面破碎顶板的碎裂岩体属性与冒顶特征，并建立碎裂岩体冒顶力学模型，深入研究冒顶本质原因和控制原理。

The results show that the variation in elevation angle of roof beam can be controlled by the equilibrium jack in moving support and the stress at different parts can be adjusted according to the variation of the support load in coal caving process, greatly improving the adaptability of the 2-leg shield support in top-coal caving working face.

分析结果表明，通过平衡千斤顶可以控制移架过程中顶梁仰角的变化，并可调节支架各部位受力以适应放煤过程中顶梁外载的变化，从而提高了两柱式支架对放顶煤工作面围岩活动规律的适应性。研究结果对于现场操作及新架型的改进都有一定的指导作用。

Field tests of the technology indicate that explosive consumption is low, ore caving per unit hole is high, and blasting quality and continuity of roof are perfect because of high application rate of explosive energy and controlled caving technique.

工业试验表明，由于创造了充分利用炸药能量和控制爆破作用的良好条件，矿岩破碎质量好、大块率低，爆破炸药单耗低、炮孔每米崩矿量高，边帮、直接顶板的完整性保护效果良好。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。