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通过对丁集煤矿井11-2煤层试验区大量资料的收集、整理和实验室实验,初步选定了该矿11-2煤层突出危险性预测敏感指标。针对11-2煤层出现的低指标突出情况,创新性地提出了孔深系数S’这一敏感指标,并进行了现场考察试验,通过综合分析最终确定的敏感指标及其临界值更加合理、准确,符合试验区实际情况。
Through the collection, collation and laboratory experiments on a large amount of data in the 11-2 coal seam test area in Dingji coal mine, the sensitive indexes for predicting the salient danger of 11-2 coal seam are preliminarily selected. Aiming at the prominent low index in 11-2 coal seam, a sensitive index of hole depth coefficient S ’is proposed innovatively and field test is conducted. Through the comprehensive analysis of the finalized sensitive index and its critical value, it is more reasonable and accurate , In line with the actual situation in the pilot area.