岩石强度

BQ分类对岩石强度过于敏感。其分类结果在高地应力区过于保守。

The BQ method is too sensitive to the rock strength , it 's classification results are often conservative in the high field stress areas .

结合相关岩石强度理论，分析PDC切削岩石时，岩石初始裂纹的萌生、发展条件和宏观破碎的开裂面，得出PDC钻进岩石破碎的条件模型，并对PDC钻进岩石的破碎过程进行了定性分析。

Then combination of rock strength theory , the rock crack initiation , development conditions and macro-cracking surface , while PDC pressure into cutting rock , were analyzed , and obtained the condition model of PDC drilling rock broken .

基于MATLAB的ANN方法在桩基岩石强度预测中的应用

Application of ANN Based on MATLAB to Forecasting the Strength of Pile Foundation Rock

20世纪岩石强度理论的发展&纪念Mohr-Coulomb强度理论100周年

Advances in strength theory of rock in 20 century & 100 years in memory of the mohr - Coulomb strength theory

与常规的地层坍塌压力和破裂压力计算公式不同，该模型从应力分析和岩石强度参数着手，结合Mohr-Coulomb准则进行井壁稳定性判断。

Being different from the regular collapse and fracture pressure calculating formulae , this model adopts the Mohr-Coulomb strength criteria to judge the stability of wellbore according to the stress analysis and rock strength parameters .

建议未来地下硐库长轴按近EW分布，地应力状态、岩体结构构造、岩石强度等基本保证了其岩体稳定性。

The authors suggest that the long axis of the underground reservoir should be oriented in a nearly E-W direction in the future , and the in situ stress state , rock mass structure and rock strength will in the main ensure the rock mass stability .

幂函数型岩石强度准则研究

A study of strength criterion in power function for rock material

岩石强度是岩体工程设计的基本依据。

Rock strength is a basic parameter for rock engineering design .

基于统计损伤理论的德鲁克-普拉格岩石强度准则的修正

Modified Drucker-Prager strength criterion based on statistical damage theory for rock

应变率对岩石强度和变形性质的影响

The Effect of Strain Rate on Strength aud Deformability of Rock

裂纹的尺寸分布对岩石强度的影响

Effect of Size Distribution of Crack on the Strength of Rock

点荷载试验在评价岩石强度指数方面的应用

Application of Point Load Test in Rock Strength Indexes Assessment

岩石强度特性的单轴压缩试验研究

Study on Rock Strength Characteristics Based on Uniaxial Compression Tests

岩石强度的三轴与剪切试验误差分析

Error analysis of rock strength from triaxial and shear tests

裂缝大小对岩石强度及应力降的影响

The Effect of Size of Crack on Rock Strength and Stress Drop

岩石强度随中间主应力变化规律

The variation law of rock strength with increase of intermediate principal stress

用岩石强度法随钻监测预测地层压力

Monitoring and Predicting Formation Pressure While Drilling by Rock Strength

岩石强度法压力监测在高温高压井中的应用

Application of pressure monitoring through rock drillability in HPHT wells

岩石强度损伤及其环境效应实验模拟研究

Experimental simulation of rock strength damage and its environmental effect

边坡岩石强度与岩体强度的工程变换

Engineering Conversion of Strength Between Slope Rock and Rock Mass

岩石强度弱化损伤机理的数值模拟及其工程应用

Numerical Study on Damage Mechanism of Rock Strength Weakening and Its Application

利用神经网络技术建立岩石强度预测模型

Rock Strength Prediction Model Established by Nerve Network Technique

岩石强度准则的真三轴压力试验检验与分析

Examination and Analysis of True Triaxial Compression Testing of Strength Criteria of Rock

中间主应力对岩石强度的影响程度和规律

Law and Degree of Effect the Intermediate Principle Stress on Strength of Rock

三轴压缩下岩石强度特性双剪理论的分析

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

不规则试件点荷载测试岩石强度

Use the point load of the irregular rock piece to test-the rock strength

损伤力学用于岩石强度的分析

Application of damage mechanics on analysis of rock strength

沉积环境对煤系岩石强度的影响

The effect of depositional environments on the strength of rocks in coal measures

烧变岩裂隙发育，岩石强度降低，极易储水。

Its strength reduces and water storage easily because of the developmental fissure .

同时作者还探索建议一种能同时适用于该破坏机理的通用岩石强度准则。

A rock strength criterion suitable for both failure mechanisms is also proposed .