查询词典 surrounding rock

Thirdly, surrounding rock deformation and failure process of layered rock mass in high geo-stress was reappeared through the physical models with different dip angle of rock stratum, and the stress change and failure discipline in the direction of vertical to bedding plane was definitely determined.

根据共和隧道砂质页岩的力学性质，运用相似理论，构筑不同倾角层状岩体的物理模型，研究了高应力条件下层状岩体围岩应力变化及变形破坏过程特征，确定了层状岩体在垂直于层面方向上围岩应力变化规律及破坏形态，揭示了深埋隧道层状岩体的破坏机理；物理模型实验研究得到的围岩应力变化规律及破坏特征与数值模拟分析的结果基本一致，同时也验证了横观各向同性弹塑性本构模型的正确性。

Geophysical characteristics of Ordovician carbonate rock were studied using drilling data. Impedance is affected mostly by material properties and reservoirs types, to a negligibly extent by lithology and flow. Compact layers and minor\|fracture reservoirs of Ordovician carbonate rock have characteristics of high density, high velocity and high impedance, and the prediction of minor fractures reservoir is difficult by the general seismic ways. Big fractures and fractured\|vuggy and vuggy and cavity reservoirs of Ordovician carbonate rock have characteristics of minor density and low velocity and low impedance in central Tarim basin, which obviously different from the surrounding rock and produce obvious characteristics in seismic data, so reservoirs can be predicted by applying general seismic data.

根据已钻井资料，对塔中地区上奥陶统良里塔格组岩石地球物理特征进行了研究，结果表明：物性、储层类型对波阻抗影响最大，岩性、流体对波阻抗影响较小；奥陶系碳酸盐岩致密层和小裂缝型储层具有密度大、速度高、波阻抗值大的特点，利用地震常规预测手段较难预测出小裂缝型储层，而塔中地区奥陶系碳酸盐岩大裂缝型、裂缝-孔洞型、孔洞型、洞穴型储层具有密度小、速度低、波阻抗值小的特点，与围岩具有较为明显的差异，在地震上可以产生明显的响应，可利用常规地震资料来预测这种类型储层。

The results show that the concentration of displacement and stress in surrounding rock intensifies with the increase of excavation steps. The maximum compression and tension stress reach 54 MPa and 3.9 MPa, which are close to the peak strength of surrounding rock. When the tailings are backfilled, the magnitude of floor heaves reduces about by 5 mm, and the maximum compressive stress drops to 32 MPa. Distribution of both stress and displacement fields are improved and the stability of stopes can be ensured during the mining process.

研究结果表明：随着开挖逐步推进，围岩位移不断增大，应力集中现象明显，最大压应力达54 MPa，最大拉应力达3.9 MPa，接近围岩的极限强度；在尾砂回填后，底鼓量下降5 mm，最大压应力降至32 MPa，表明应力场和位移场均得到改善，能确保回采期间采场的稳定。

Taking the coal bunker chamber of Tuzhu Mine as a case, the stability coefficient was calculated that of the surrounding rock with theory of loose ring and combined arch theory, the both results of calculations were higher than 1.1, the design parameters of bolting and grouting support coincidence the requirements of surrounding rock s stability and safety was proved.

以土朱矿井煤仓硐室为例，运用松动圈理论和组合拱理论分别计算了硐室围岩稳定性系数，2种理论计算得到硐室围岩稳定性系数均大于1.1，证明了锚杆注浆联合支护设计参数符合硐室围岩安全稳定的要求。

By analyzing surrounding rock instability caused by tunnel excavation, surrounding rock instability of deep-buried tunnels is considered as a sudden failure phenomenon, which possesses nonlinearity and discontinuity obviously and shows the uncertainty of mechanical deformation property, nonlinearity of constitutive relationship and catastrophe of failure process.

在分析隧道开挖引起围岩失稳基础上，认为深埋隧道围岩的失稳是一种突发破坏现象，具有明显的非线性和不连续性质，主要表现在力学变形性质的不确定性、本构关系的非线性和破坏过程中的突变性。

Based on the total potential energy principle, the cusp catastrophic model for instability and failure of deep-buried tunnel surrounding rock is established. Through the observed data of settlement values of typical section vault of deep-buried tunnel and the sudden threshold values of displacement of each monitoring section, the variable values of vault settlement function are obtained, and the stability of deep surrounding rock in tunnel is decided.

运用突变理论探讨了深埋隧道失稳的机制；根据总势能原理，建立了隧道失稳的尖点突变模型，导出了失稳的力学判据条件；并基于深埋隧道典型断面拱顶下沉量现场量测的数据，计算出拱顶下沉函数的各变量值，由各监测断面位移突变阀值来判别深埋隧道围岩的稳定性，分析结果与实际施工围岩情况一致。

The use of rock geomechanics classification method to increase the tiger to the right tunnel surrounding rock classification, the reference and evaluation criteria while rock classification method and the BQ were varied, but the same number of factors can be integrated indicators of scientific objective of rock classification for the tunnel to provide an important basis for the design and construction.

利用岩体地质力学分类方法对老虎岭隧道右幅进行围岩分类，其参考因素和评价标准虽然与BQ围岩分级方法不尽相同，但同样能够综合多因素综合指标，对围岩进行科学客观的分类，为隧道的设计施工提供重要依据。

In this paper, commonly used "highway tunnel design specifications"(JTG D70-2004) in the BQ surrounding rock mass classification methods and geomechanics classification method on the highway翻坝increase the tiger to the right tunnel surrounding rock classification, and the following major conclusions

本文结合国内常用的《公路隧道设计规范》（JTG D70—2004）中BQ围岩分级方法和岩体地质力学分类方法对翻坝高速公路老虎岭隧道右幅进行围岩分级，并得到以下主要结论

In-situ monitoring gave the following results: 1 a tension stress zone occurred at the bottom of reinforced rock mass which indicated that the role of rock bolting was remarkable; 2 stress concentration at surrounding rock of main shaft was gradually transferred from shaft wall to complete rock mass far from shaft center; 3 vertical displacement was gradually smaller from up to bottom and from center to outside of the reinforced loose rock mass.

首先，建立了主溜井三维有限元计算模型，模拟了主溜井围岩的塌落破坏过程和加固后的加固体的稳定性及变形特性；同时，还采用多点位移计等对加固体的稳定性进行了实地监测。计算结果表明：网棚锚注加固体的纵剖面上的压力和位移规律是①加固体下部局部出现拉应力区，表明锚杆的使用是合理的；②加固体内的应力由塌落中心向周围围岩过渡，应力越来越大，最终将荷载传至围岩中；③从下到上下沉逐渐减小；④从加固体中心到周围下沉位移逐渐减小，且近似一条抛物线。

The researches show that self-stability span is synthetical reflection of surrounding rock stability, so sub-classification standard can be constituted based on it. Surrounding rock self-stability span can divide into long-term stability span, basic stability span, temporary stability span and instability span.

研究结果显示：围岩自稳跨度是围岩自稳性的综合反映，围岩自稳跨度可分为长期稳定跨度、基本稳定跨度、暂时稳定跨度和不稳定跨度。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。