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构造煤分布研究有利于瓦斯区域预测。以煤体流变最小耗能原理为指导,结合直梁偏心压缩弯曲模型探讨了矿井构造煤形成分布规律。认为长期受到挤压剪切区(高应力区)与附近最低应力区形成的最大差应力的煤体发生流变,构造煤体向最低应力区流动并集聚增厚,而高应力区构造煤减薄甚至完全消失。以新密煤田超化、告成、大平等矿井地质构造特征分析为基础,结合煤体流变最小耗能构造煤形成分布机理实例揭示了该煤田主采二1煤层构造煤突增突减的原因。
Research on the distribution of tectonic coal is good for gas regional prediction. Guided by the principle of minimum energy dissipation of coal, the formation and distribution regularity of mine tectonic coal is discussed with the eccentric bending model of straight beam. It is considered that the coal body, which has been subjected to the maximum differential stress in the region of crush and shearing (high stress zone) and the vicinity of the lowest stress zone for a long period of time, undergoes fluid flow, and the structure coal flows and accumulates and thickens to the lowest stress zone. Thin or even completely disappear. Based on the analysis of geological structure features of the changhua, qingcheng and dabing coal mines in the Xinmi coalfield, the formation and distribution mechanism of tectonic coal with the least energy dissipation of coal flow is revealed. .