研究表明：放顶煤开采、提高支架工作阻力可以减缓煤壁压力，煤体合理注水可以提高煤体黏聚力与抗剪强度，它们是防治极软煤层煤壁片帮的有效措施。
The following research results are obtained: the top coal caving technique and increasing the resistance of the support can reduce the pressure on the coal wall.
分析了剪胀和软化程度对球孔扩张时的应力、位移、塑性区半径及极限扩张压力等方面的影响，并将大、小应变理论的结果进行了比较。
The influence of softening extent on stress, displacement and the radius of plastic zone during expansion as well as the extreme expansion pressure are studied.
通过动扭剪试验研究饱和粉煤灰的动孔隙水压力特性、动强度特性以及振陷变形特性。
Some behaviors of saturated flyash such as pore water pressure, dynamic strength, and dynamic deformation are studied by the dynamic torsional shear test.
再通过大量的固结快剪试验，得到软粘土在不同固结压力、不同固结度下的强度变化规律。
Meanwhile, the law of soft clay strength improvement is drawn from different consolidated pressure and different degree of consolidation by many consolidated-quickly shear test.
由于施工期很短，水下抛填粘土的孔隙水压力只能部分地消散，因而抗剪强度较低。
As the construction period is rather short, the pore water pressures of the dumping cohesive soil can only partially dissipate and then the shear strength is quite low.
提供了一种在普通压力试验机上以单一轴压实现对矩形板的压剪复合加载的方法及装置。
It provides a method which can implement press-shearing combined loading for rectangular plate by use of single axial compression on the common pressure testing machine and device thereof.
对于非饱和土，采用简单易得的直剪试验指标应用广义朗肯土压力公式就可以得到相当精确的结果，弥补了扩展朗肯土压力理论的不足。
For the unsaturated soil, this method provides a very accurate estimate of earth pressure from the direct shear experimental indexes, which overcomes the shortage of the extended Rankine theory.
结果显示，当上覆压力较小时，剪胀角对抗拔应力的影响较小。
Parametric analysis is carried out to investigate the effects of soil dilation and overburden pressure on the soil nail pullout resistance.
通过建立一个三维有限元模型，研究土钉在不同上覆压力和剪胀作用下的土钉抗拔行为。
In this paper, a three-dimensional (3d) finite element (fe) model is developed to simulate the behavior of soil nail considering the effects of overburden pressure and dilation.
为了研究土的剪切波速与其三轴剪切试验力学指标之间的关系，依据扭剪振动原理，开发出一种测试三轴压力室内土样剪切波速的传感器。
Torsion shear wave transducer is a newly developed device to test the shear wave velocity of soil specimen which has not been reported before.
为了研究土的剪切波速与其三轴剪切试验力学指标之间的关系，依据扭剪振动原理，开发出一种测试三轴压力室内土样剪切波速的传感器。
Torsion shear wave transducer is a newly developed device to test the shear wave velocity of soil specimen which has not been reported before.
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