At the same time, the author also discusses the question that the hazard of outburst in colliery is predicted by using the abnormal features of the maro-molecular structure of coal.
同时，还探讨了用煤大分子结构异常特征预测煤和瓦斯突出潜在危险性的问题。
This paper, using the least travel time and SIRT method, study on the seismic tomography of stress abnormal in coal field. These have some theoretical and practical values.
该文采用最小旅行时和SIRT法，对煤田中的地应力异常地震层析成像的方法进行成像研究，具有一定的理论价值和现实意义。
Synopsis:This paper introduces the application examples of identification of abnormal coal for coking with measurement of vitrinite reflectance.
前言： 通过实例介绍了镜质组反射率测定在异常煤质鉴别中的应用。
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