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针对大倾角煤层综放工作面单一角度布置方法生产效率低、出煤量少以及支架与围岩系统稳定性差等问题,提出了大倾角煤层伪仰斜综放工作面变角度布置方法。通过改变工作面各个区域的角度及工作面各区域的长度,有效地提高了支架与围岩系统的稳定性,改善了同等情况下的安全条件,同时提高了煤炭采出率。
Aiming at the problems of low angle coal caving method, such as low production efficiency, small amount of coal and poor stability of support and surrounding rock system, the method of single-angle caving method in fully mechanized caving mining face is proposed. By changing the angle of each working face and the length of each working face, the stability of the support and surrounding rock system is effectively improved, the safety conditions under the same conditions are improved, and the coal recovery rate is also improved.