rock strength

An Experimental Study on Tensile Strength of Irregular Rock Sample by Sleeve Fracturing Technique

不规则岩石试件抗拉强度的套筒致裂试验研究

Fuzzy theory of rock strength and its application

岩石模糊强度理论及其应用

Diametral point load test is a very promising, simple and accurate method for obtaining compressive and tensile strength data of rock core.

用岩芯进行径向点荷试验，是简单而较精确地获得岩石抗拉、抗压强度的极有前途的方法。

He pushed against the rock with all his strength.

他用全力推那块石头。

Characteristics of the Rock Strength under Tri-axial Compressions Analyzed with Twin Shear Theory

三轴压缩下岩石强度特性双剪理论的分析

A Theoretical Study of Rock Strength Conditions

岩石强度条件分析的理论研究

In addition to the partial lean ore, the en-block rock strength is higher. But the rock will be softened encountering with water, which results in the expansion of internal stress and the intensity decline.

该矿区除部分贫矿岩外，单块岩石强度均较高，但矿岩遇水将会软化，内部产生膨胀应力，造成强度降低，在支护工程中要特别注意。

Preliminary study on stress field adjustment and rock strength weakening caused by water seeping

水渗透引起的应力场调整及岩石强度弱化的初步研究

Confining pressure increase rock strength , decrease damages rate of rock creep.

在热力学框架内推导了岩石材料的蠕变损伤本构关系.

Numerical results denoted that the dynamic failure processes are controlled by three factors: i.e. tensile strength of rock, amplitudes of stress waves and waveforms of stress waves.

数值模拟表明，在应力波作用下的岩石破裂取决于三个因素：材料的抗拉强度、应力波的应力幅值以及应力波的波形。

Testing results indicate that the threshold pressure of jet aided drilling is 4.1 times of rock tensile strength and 26% of rock compressive resistance, also related with the bottom hole pressure difference and rock physical properties.

实验结果表明，射流辅助钻井的门限压力是岩石抗拉强度的4.1倍，是抗压强度的26%；还与井底压差及其它岩石物理力学性质有关。

It was found that stress-strain properties of the samples of broken rocks depend on grain size and rock strength.

研究结果表明：破碎岩石在压实过程中应力与应变之间近似呈指数关系；

Slopes of gravitational gliding are related to rock strength, thickness of sliding system, pore fluid pressure and lubricating layer;

岩层重力滑动的坡度与岩石强度、滑动系统厚度、孔隙压力以及润滑层有关；

Rock strength is a basic parameter for rock engineering design.

岩石强度是岩体工程设计的基本依据.

Rock strength deterioration under acidified conditions and its static accelerated simulation

岩石在酸化环境下的强度损伤及其静态加速模拟

The parameter 2~ ( 1/ 2) U may be taken also as a tensile strength of rock which contains small randomly distributed preexisting cracks.

同时，参量2~（1/2）U可以取做为含有随机分布较小裂隙的岩石抗拉强度。

The compress strength of basaltic rock mass increases by 2~ 3 times from upper part, lower part of weakly weathered rock mass to fresh one, While tension strength increases with 1 magnitude.

从弱风化上段、弱风化下段到微新岩体，抗压强度以2～3倍的量级增大；而抗拉强度以一个数量级增大。

The tensile strength of the rock is not only one of the indicators of the important mechanical properties of the rock, but also a controlling parameter of the security and stability analysis in rock structure design.

岩石的抗拉强度是岩石的重要力学性质指标之一，也是岩石结构设计中安全与稳定性分析的一个控制性参数。

The tensile strength of rock is the ability to resist tensile stress in the rock specimen as a role of external load and ultimate load in the tensile failure of rock specimen with pull-sectional area.

岩石抗拉强度是指岩石试件在外荷载的作用下抵抗抗拉应力的能力，为岩石试件在拉伸破坏时的极限荷载与受拉截面面积的比值。

Because of the constraint of experimental equipment and technology, there are quite few studies on the crack propagation mechanism of rock mass under tensile stress. Compared to the compressive strength, the tensile strength of rock mass is very low.

目前压缩条件下岩体中三维裂隙扩展演化机制的试验研究已有一些，但由于试验设备和技术方面的制约，拉伸条件下相应的成果很少。