查询词典 rock-bottom

Rock blast is one of the main geological hazards during tunnel construction at high land stress zone. Rock blast greatly threatens the production safety of the construction enterprise. It is of great importance to predict the extent of rock blast when designing and constructing this kind of tunnel.

岩爆是高地应力区岩质隧道开挖施工过程中发生的主要施工地质灾害之一，它的发生对隧道施工企业的安全生产构成很大的威胁，对岩爆发生可能性及其程度的预测是这类隧道设计、施工及安全生产所面临的重大问题。

Rock mass deformation and failure in working face caused by underground mining lead to mining-induced fracture, which is the source of a series of mine disasters. The research on geophysical characteristics of mining-induced fracture rock mass and feasible geophysical techniques with high accuracy and resolution detection on mining-induced fracture rock mass are meaningful theoretically and practically for the safety of coal mines and the prevention of mining disasters.

地下矿床开采引起采场围岩变形破坏产生采动裂隙，采动裂隙是矿山一系列灾害的根源，研究矿山采动裂隙岩体的地球物理场特征，提出可行的地球物理方法对裂隙岩体实施高精度高分辨率探测，对于防治矿山灾害发生，保障矿山安全，具有重要的理论意义和实际应用价值。

From the results of numerical simulation, distributing characters of stress and strain field of surrounding rock mass under gravity is analyzed, which presents the effect of quality of surrounding rock mass, construction order and interactions of adjacent underground runnels while being constructed simultaneously. Impact of interlayer shearing belts on surrounding rock mass stability of underground c

对工程区右岸地下引水洞室群的围岩稳定性进行系统研究，可以控制工程投资，提高施工质量和支护设计精度；分析评价洞室围岩的整体及局部稳定性，消除洞室稳定的潜在危害，对保证地下洞室的施工安全、围岩的长期稳定以及优化设计具有十分重大的工程实践意义。

The δ〓O for both of them are changed due to water/rock interaction at water/rock weight ratios of larger than 0.1, and the calculation indicates that, in this case, the influence of water/rock interaction on the δD value of the fluid is minor. In the upper part of the geothermal system, the upward ore forming fluid mixes with low temperature groundwater with very low salinity and δ〓O, which may cause the precipitation of metals.

根据氢、氧同位素研究结果，嵩溪银锑矿床的上升成矿流体是由岩浆热液与循环地下水热液混合而成，这种混合成因含矿热液上升到地热系统上部与低矿化度、低δ〓O的低温地下水发生了不均匀混合，这种混合作用导致金属矿物沉淀，但成矿物质是由上升成矿流体带来的。

This paper examines the cracks appeared in the retaining wall beside the FeiYuze tunnel uplink secondary lining vault. The seismic CT technology was used to investigate the engineering geology structure of the covering rock mass above the tunnel. The results indicate that the rock mass had three fracture zones along tunnel axial and the rock mass quality in the small mileage entrance section was poor.

针对飞鱼泽隧道的上行线二衬拱顶靠档墙处出现裂缝，经地震CT技术查清隧道上所覆盖岩体的工程地质结构结果表明，沿隧道轴向存在三个岩体破碎带，其中在小里程入口段，岩体完整性较差。

You can also use the rock and cord technique where you place a 1.5 rock under the two tarp layer and then squize the tapes into a narrow neck around the rock and tie this tight with a cord.

您也可以使用岩石和脊髓技术，您一个1.5 岩下的两个篷布层，然后squize到磁带一个狭窄的颈部周围的岩石和领带这个紧凑的脊髓。

In flat dip layer, the seam thickness control the stability of the wall rock, the thick-bedded hard rock is stable than the thin-bedded hard rock.

岩层厚度在缓倾斜时对围岩稳定起控制作用，厚层硬岩整体稳定性好于薄层状硬岩。

As the field work in Xi Shanping Tunnel showing, constructing tunnel in flat dip coal-bearing strata, if there is thick-bedded hard rock nearby, the stability of the wall rock is ensured by the control in soft rock supporting reinforce.

本文对近水平煤系地层中修筑隧道的围岩稳定性进行了深入分析，在含煤岩的围岩变形及应力重分布规律的研究上有所创新，为近水平围岩的支护设计优化提供了可靠依据。

Concept To describe changes in the relative configuration of rocks, imagine that there is a unit sphere, 1 in radius, in the rock before it is deformed. When the rock is deformed homogeneously, the sphere becomes an ellipsoid. Then this ellipsoid is called strain ellipsoid, whose shape and orientationrepresents the rock's strain condition.

概念 为了形象地描述岩石的应变形态，设想在变形前岩石内有一个半径为1的单位球体、平均变形后成为一个椭球，以这个椭球形态和方位表示岩石应变状态这个椭球称应变椭球。

In a society which revolves around rock-paper-scissors for decision making where scissors is generally accepted as the most successful, the one person that uses rock will dominate. In warcraft balance, strategies have a very similar relationship to each other as does the rock, the paper and the scissors.

在一个只靠剪刀，石头，布做出胜负决定的社会中，当剪刀被多数人公认为是成功的选择时，少数几个会出石头的人就会通知这个胜负世界。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。