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首页> 外文会议>2007采矿科学与安全技术国际学术会议 >Feasibility Study on the Prediction of Coal Bump with Electrical Resistivity Method
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Feasibility Study on the Prediction of Coal Bump with Electrical Resistivity Method

机译：用电阻率法预测煤the的可行性研究

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摘要

The resistivity experiment of rock and its application were narrated in this paper. According to the method, the electrical resistivity method of predicting coal bump was brought forward. Experiments results are as follows: (1) the resistivity of horizontal stratification are smaller than that of vertical stratification, (2) the electrical resistivity values of coal sample under unsaturated state amount to about half of the nature state values, (3) the electrical resistivity changes of coal samples in the uniaxial compression show that coal samples' electrical resistivity decreases with increasing uniaxial compression press, and begins to increase while reaching half of rupture press, and the electrical resistivity increase continuously if keeping on loading until rupture.Electric mechanism of loaded coal smaples and mechanics mechanism of coal bump were analyzed and gain the inherent relationship between the electrical resistivity changes and the fracture process of coal. The quadratic fitting stress-electrical resistivity function of under the uniaxial compression is more reasonable. Therefore, the method with electrical resistivity anomaly to predict the occurrence of coal bump is feasible.
机译：介绍了岩石的电阻率实验及其应用。根据该方法，提出了预测煤块爆轰的电阻率方法。实验结果如下：（1）水平分层的电阻率小于垂直分层的电阻;（2）不饱和状态下煤样的电阻率约为自然状态值的一半;（3）电煤样品的单轴压缩电阻率变化表明，煤样品的电阻率随单轴压缩压力的增加而减小，并在达到破裂压力的一半时开始增加，并且如果保持载荷直至破裂，电阻率会持续增加。 分析了加载煤coal的电气机理和煤bump的力学机理，得到了电阻率变化与煤体破裂过程的内在联系。单轴压缩下的二次拟合应力-电阻率函数更为合理。因此，利用电阻率异常来预测煤块发生的方法是可行的。

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