Contained within the rock strata is evidence that the region was intensely dry 15,000 years ago.
岩层中的证据表明该地区在15,000 年前曾经非常干旱。
And adjustment in rock strata means that loose soil will sink or heave.
岩层的调整意味着松动了的泥土将会下沉或者鼓起。
Thus, jutting peaks of sheer rock with the rock strata going almost vertical occur.
因此，岩石的峰尖突出，岩层方向几乎是垂直的。
Now the man who bought the claim hired an engineer to examine the rock strata of the mine.
现在有人重新买下这一矿脉所有权，他雇佣了一名工程师来探测矿石的岩层结构。
It is a key for mine safe production to ensure the stability of overlying rock strata in stope.
确保采场上覆岩层稳定是矿井安全生产的关键。
During overlying rock strata being fractured, the surface gas drainage boreholes may be damaged due to ground movement.
在长壁工作面通过的过程中，地面垂直钻孔可能随岩层移动而发生破坏。
The practice proved that transient electromagnetic exploration has good effect in exploring bedrock and differentiating rock strata.
实践证明：瞬变电磁勘探在勘探基岩及划分岩层方面效果较好。
We had the best choir in the area and there were also several rock strata visible on the walls which made teaching geology far more interesting.
洞壁上可以看到好几种岩层，用这个教地理生动有趣。而且我们不需要生物课本，我们的山洞学校里每天都能看到蝙蝠、蜥蜴。
The laws of rock strata moving and pressure manifestation, the regulations being followed in the course of entry layout and the theoretical base fors...
着重阐述了岩层移动和矿压显现规律，在布置巷道时应遵循的规则，以及选择最佳方案的理论依据。
Now the mining engineering problem has been not just the mining issues, but also to pay attention to stability and surrounding rock strata control problems.
现在的采矿工程已不仅是开采问题，而且还要注意围岩稳定性和岩层控制。
Caving angles of roofs among key strata are different because of the differences of the load-bearing effect of key strata and mechanical characters of rock strata.
关键层的承载作用和岩层力学特性的差异使关键层间顶板的垮落角不同。
Hose bit can be divided into cutter teeth and cone teeth, cone teeth for weathering of soft rock strata, and permafrost, cutter teeth used for drilling hard bedrock.
筒式钻头的切削具可分为截齿和牙轮，截齿筒状钻头用于风化软岩及永冻土地层钻进，牙轮筒式钻头用于硬质基岩钻进。
The stability of goaf-side roadways depends on not only the abutment distribution, but also the fracturing degree of the coal seam and rock strata alone the pillar width.
一侧采空巷道稳定性不仅与支承压力分布有关，而且与煤体受破坏程度有关。
The research results indicate that the top inclined fault and the loose rock strata and the unreasonable construction project are the main causes to induce these defects.
研究结果表明：连拱隧道内侧断裂带、上方松散层等不良地质条件和不合理的施工方案是导致隧道衬砌严重破坏和山体地表开裂的主要原因。
The now tame Colorado carved these steep walls over the last six million years, exposing rock strata that detail nearly two billion years of North America's geologic history.
如今已经被开垦了的科罗拉多州有着许多已存在了六百多万年的峭壁，这些暴露在外面的岩层详尽的记载了北美近两百年的地质学历史。
The characteristic of rock strata movement in mining process of a mine in Chongqing is analyzed by fractal regressive method, and the forecasting of the movement is considered.
用分形插值方法分析重庆某矿开采过程中的岩层移动特征，并探讨其预测方法。
The interior failure mechanism of rock strata developing from large-scale excavation and the rules of land surface deformation are analyzed on the base of careful investigation.
在详细调查的基础上简要分析了地下大面积采空后岩土内部破坏机制和地面变形规律。
The major factors that affect the stability of the structure are rotational angle of the voussoir beam, ratio of length and height, rock type and height of carrying rock strata.
块体的回转角、长高比、岩性及负载岩层的高度是影响结构稳定的主要因素。
The Guibei Mountain developed from the limestone and dolomite in the Carboniferous Period (about 362-290 million years ago). The rock strata grow horizontally with pure texture.
龟背山山体发育在石炭纪(距今约3亿6千2百万年至2亿9千万年)石灰岩和白云岩中。
In view of random movement and deformation of rock strata, also considering the interaction of ground-foundation-building, a building in mining area is analyzed by using this method.
并利用该方法，针对岩层随机移动变形作用，考虑地基基础上部结构的共同作用，对矿区建筑物进行分析。
The vital problems to be solved in Shendong mine are the dynamic pressure damage of thin rock strata roof under thick sandy soil soft stratum and the loss of water and soil under mining.
浅埋煤层薄基岩厚砂土松散层顶板动压灾害和采动水土流失是神东矿区急需解决的重大问题之一。
On the basis of key rock strata theory, transferring rock beam structure and the law of the overlying strata displacement and the surface subsidence theory, we deduced offset error formula.
以关键层理论、传递岩梁理论以及采场上覆岩层及地表移动规律理论为基础，推导出岩梁抗弯刚度的误差补偿公式。
The seismic wave lies the count for much parameter that the dissemination speed in the quality BE, in the seismic data processing that reach agreement to release in the underground rock strata.
地震波在地下岩层介质中的传播速度是地震资料数字处理和解释中的非常重要的参数。
The laws on the rock strata and surface movement that have known is basically based on the rock strength, not considering exist and the effect on the subsidence laws of the fissure and the weak face.
已有的岩层与地表移动规律基本上以岩石强度为基础，很少顾及岩体中裂隙弱面的存在，及其对岩层与地表移动规律的影响。
We have mentioned that though Luzon appears to be on the Philippine Plate, this is a land mass attached to the Philippines on the Sunda Plate because underlying rock strata hold it to the Sunda Plate.
我们提到过虽然看起来好像吕宋岛在菲律宾板块上，这其实是在巽他板块上与菲律宾相连的土地，因为下面的岩层是属于巽他板块的。
While rock between two consistent strata might in one place be shale and in another sandstone, the fossils in that shale or sandstone were always the same.
存在于两个相连地层之间的岩石，可能在这一层是泥板岩，而在另一层中是砂岩；但存在于泥板岩或者砂岩中的化石往往都是相同的。
Transitional tervain from siliceous rock to clayrock, both interbed and altered clayrock are favourable strata of all kinds of elements concentrated mineralization underneath the Cambrian.
寒武系底部硅质岩向粘土岩过渡地带 ，或两者的互层以及蚀变粘土岩是多种元素富集成矿的有利岩层。
The lay of the strata can imply that the rock splits easily along its direction of cleavage .
成层的地层意味着岩石易于沿着其解理方向裂开。
In mining engineering, strata models are often simulated by similar material simulation model, rock bending deformation and fracture damage is the serious problem.
而在采矿工程中，相似材料模拟的往往是层状模型，岩层的弯曲变形和断裂破坏是关键问题。
In mining engineering, strata models are often simulated by similar material simulation model, rock bending deformation and fracture damage is the serious problem.
而在采矿工程中，相似材料模拟的往往是层状模型，岩层的弯曲变形和断裂破坏是关键问题。
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