tensile strength of rock

Method to determine tensile strength of rock using flattened Brazilian disk

采用平台巴西圆盘试样测试岩石抗拉强度的方法

Based on Griffith theory and using the tensile strength of rock, the formulae of critical stress for rock burst in underground opening have been obtained.

采用Griffith强度理论，得到了用岩石抗拉强度表示的地下洞室开挖中发生岩爆的临界应力公式。

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。

The point load testing as a simple, rapid, reliable and cheap method can determine indirectly the tensile and compressive strength of rock in the field.

岩石的点荷载实验法简便、迅速、可靠、成本低，能在现场间接确定矿岩抗拉强度与抗压强度。

In this method, Poisson ′ s ratio, the compressive strength and a suitable strength theory are needed to calculate the tensile strength of rock material.

与传统测试方法不同，这种方法需要知道材料的泊松比和抗压强度，以及适合于岩石材料的强度理论。

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。

This method takes full advantage of the low tensile strength of rock and high permeating ability of high pressure water which enable the initiation and propagation of cracks and the accomplishment of rock fragmentation.

本方法充分运用了岩石抗拉强度低，和高压水对岩石有利渗透作用的条件，从而达到岩石裂纹的产生与扩展，直到最后劈裂。

Influence of ratio of mesoscopic compressive strength to mesoscopic tensile strength on progressive failure of rock Liang

细观介质拉压比对岩石破坏过程的影响

The Statistical Analysis for Tensile Strength of Rock by Laboratory Hydraulic Fracturing Method

用水力破裂法测得岩石抗拉强度的统计分析

When the pressure reaches the breaking pressure, along the direction of the arrangement hole, the Y-direction tensile stress exceeds the tensile strength of the rock, so rock fracture.

当压力达到破坏压力时，模型沿布置孔的方向的Y方向拉应力超过了岩石的抗拉强度，岩石破裂。

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。

Influence of Internal Radius of Ring Specimen on Tensile Strength of Rock

圆环试样内径对抗拉强度的影响

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。

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。

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

Experimental study on split test with flattened disk and tensile strength of rock

平台巴西圆盘劈裂和岩石抗拉强度的试验研究

A study of tensile-shear crack and strength related to jointed rock mass

节理岩体拉剪断裂与强度研究

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。

THE Splitting Experiment for Tensile Strength of Rock

岩石抗拉试验劈裂法测试技术的探讨

And the density, cohesion, internal friction angle, compressive and tensile strength of the rock in XinQiao Pyrite iron mine are determined. 3.

测出了矿区主要矿岩体的密度、内聚力、内摩擦角、单轴抗压强度和抗拉强度等物理力学参数。

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。