查询词典 caving

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。

The secretary of the Province of New Netherland,(22) 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，新尼特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。

In order to control the stability of surrounding rock mass and the capability of top-coal for overlength isolated fully-mechanized top coal caving face,the distribution characters of abutment pressure for the working face are analyzed contrastingly with finite element software.

为对超长孤岛综放工作面围岩稳定性和顶煤冒放性进行控制，采用FLAC3D有限元软件对比分析了超长孤岛工作面的支承压力分布特征。

The caving shields, which in general are inclined, are hinge-joint to the canopy and the base making the shield a kinematically stable support, a major advantage over the frames and the chocks.

对放顶盾，而在一般倾向，是铰链联合向树冠和基地，使盾牌一动稳定支持，一大优势超过了帧和chocks 。

Several hay caving in wardrobe, bookcase, can insecticide mothproof, aroma that lingers years.

放几棵干草在衣柜、书柜里，能驱虫防蛀，香味几年不散。1999年薰衣草被国际香草协会选为年度香草

The blast of sublevel caving together with the blast of undercutting, crater opening and slot cutting are brought about successfully at same time in the practice of sublevel drilling and stope mining with nonelectric blast ignition system, and the productivity of mining is increased.

在分段凿岩阶段矿房法回采实践中，用非电导爆管雷管起爆系统成功地实现了阶段落矿爆破与拉底、辟漏、切槽爆破一次同步进行，提高了生产效率。

The blast of sublevel caving together with the blast of undercutting, crater opening and slot cutting are brought about successfully at same time in the practice of sublevel drilling and stope mining with nonelectric blast ignition system, and the product

在分段凿岩阶段矿房法回采实践中，用非电导爆管雷管起爆系统成功地实现了阶段落矿爆破与拉底、辟漏、切槽爆破一次同步进行，提高了生产效率。

Through analyzing the problem of the coal wall support, top-coal caving and the design of powered support,the author explains the method to control the coal slabbing and the measure of powered support design and the collocation of the rear transport pan.

通过对仰采放顶煤工作面煤壁支护、放顶煤问题、液压支架设计等方面的分析，说明在仰采工况下控制煤壁片帮方法以及液压支架设计、后部输送机布置应采取的措施。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。