The strata feature of the newly-rising social groups, the partial weakening of the basic strata, the political property of those being firstly rich, and the expansion of the group with medium income are the main developing tendencies in the new social structure. 新兴社会群体的阶层化、基本阶层的局部弱势化、先富群体的政治化、中等收入者群体的扩大化,是新社会结构的主要发展趋势。
The paper analyzes rules of subsidence distribution at any point of overlying strata based on random continuous medium theory, in which the overlying strata and surface movement caused by underground mining is regarded as a random process. 本文从随机连续介质理论出发,视地下开采引起的上覆岩层及地表移动为随机过程,分析了上覆岩层任意点的下沉分布规律。
Traditionally, the high slopes at unevenly weathered strata are strengthened with common pre-stressed tensile anchor cable, the bearing force of which can not be guaranteed as the anchoring can not reach the medium/ slightly weathered strata. 不均匀风化地层的高边坡采用普通拉伸型预应力锚索进行加固,由于地层变化造成锚固段不能保证完全进入中微风化岩层,锚索的承载力无法保证。
The best reservoir facies zones of the Triassic Jurassic strata in the North Central Tarim Basin are closely related to the lowstand systems tract of the medium period cycles. 塔北塔中盆地三叠系&侏罗系的有利储集相带与中周期低水位体系域关系密切。
Area bedding rock landslides, mainly developed in parts of the syncline and anticline fold turning parts of the transition, and the ground soft and hard white or soft interlayer with thin strata among the main scale to large and medium. 区内的顺层岩质滑坡,主要发育在向斜背斜过渡部位和褶皱转折部位,以及软硬相间地层或含薄层软弱夹层的地层之中,规模以大中型为主。