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首页> 外文会议>The 7th International Symposium on Rockburst and Seismicity in Mines(2009年第七届国际岩爆与微振动性学术研讨会）论文集 >STUDY OF THE MECHANICAL PROPERTIES OF COAL FACE THICK-HARD TOP COVER ROCK UNDER THE PRESSURE OF OVERLYING ROCK
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STUDY OF THE MECHANICAL PROPERTIES OF COAL FACE THICK-HARD TOP COVER ROCK UNDER THE PRESSURE OF OVERLYING ROCK

机译：覆岩压力作用下煤层厚硬顶盖岩力学特性研究

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摘要

There are often two or more neighbouring thick and hard rock plates in the overlying rock layers during mining. In fact, more than one rock layer affects the characteristics of overlying rock layers when the compound effects in the second layer, or multi-hard layers, take place. Rock burst may occur in the case of larger mining depths. As a result, it is necessary to study the mechanical property of thick-hard rock layers under the press of overlying rock. Based on the plate theory, the mechanical property of thick-hard rock layers is studied and the mechanical model of the thick-hard layers are set up and analyzed. The formula of calculating the maximum deflection of the thick-hard layers and the formula of deformation of roof strata are also worked out. At the same time, the paper advanced the equation and method to calculate the vertical displacement of thick-hard roof pressed by overlying rock. This provides the theoretical basis for control of the strata and surface subsidence by injecting the caving zoon, which is conducive to the prevention and prediction of rock burst. At last, a computing example was given to compute the thick-hard roof subsidence.
机译：在开采过程中，上覆岩层中经常有两个或多个相邻的厚硬岩板。实际上，当在第二层或多硬层中发生复合作用时，不止一个岩石层会影响上覆岩石层的特性。如果开采深度较大，可能会发生岩爆。因此，有必要研究上覆岩层作用下厚硬岩层的力学性能。基于板理论，研究了厚硬岩层的力学性质，建立了厚硬岩层的力学模型，并进行了分析。推导了厚硬土层最大挠度的计算公式和屋面地层变形公式。同时，提出了上覆岩石压实的厚硬顶板竖向位移的方程式和方法。注入放空带为控制地层和地表沉陷提供了理论依据，有利于岩爆的预防和预测。最后，给出了一个计算实例来计算厚硬顶板沉降。

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