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煤矿开采时,预报冲击地压和岩石冒落危险以及估计巷道移近量和煤层抽放瓦斯情况时,要根据那里由原始应力(覆岩压力和成岩构造应力)和由于开采条件造成的二次应力所构成的超支配作用的矿山压力。多年来,构造和成岩应力的研究已卓有成效。为了解释工作面中和工作面周围的二次应力,提出了许多矿压理论,并进行了模拟理论计算。目前的工作是根据有限元模型按三种采煤方法计算厚煤层开采时(在土耳其大约井工开采量的60%来自厚煤层)的矿压分布。a.放顶煤长壁工作面采煤法的矿区分
In coal mining, when predicting the rock burst pressure and rock fall hazard, and estimating the amount of roadway approach and gas drainage in coal seams, according to the primary stress (overburden pressure and diagenetic tectonic stress) and the secondary Stress caused by the overburning effect of mine pressure. For many years, the study of tectonic and diagenetic stress has been fruitful. In order to explain the secondary stress around the work surface and in the work surface, a number of mine pressure theories have been proposed and the simulation theory calculations have been made. The current work is based on the finite element model calculated by three coal mining methods when the thick seam mining (about 60% of the earthwork in Turkey from the thick seam) rock pressure distribution. a. Caving mining longwall coal mining face