大倾角易燃特厚煤层综放工作面防灭火技术研究与应用

摘要

The 37220-1 Working Face on Dongshan Coal Mine of Huating Ming Group is the first fully mechanized caving face of the mine west wing expanding area ,its angle of 52 °.As the angle is large on this face ,its poor support stability ,the roof management is ver-y difficult,face equipment is easy to dumping ,decline,coal wall spalling easily ,it create advancing down on working face over a period of time,fire prevention and extinguishing pressure .Through field research and practice ,summed up the large tilting fire-fighting tech-nology with caving working face ,through the optical fiber monitoring system ,pouring liquid nitrogen ,injecting gel and polymer gel pre-vention and control measures ,to prevent the spontaneous combustion accidents ,ensure the safety in working face normal stoping .%华亭煤业集团公司东峡煤矿37220-1工作面是该井田西翼扩大区第一个综放工作面，工作面倾角52°。由于工作面倾角大，支架稳定性差，顶板管理难度大，工作面设备易倾倒、下滑，煤壁易片帮，造成了工作面在一段时间内推进放缓，防灭火压力增大。文章通过现场实践，研究和总结出适合大倾角综放工作面防灭火技术措施，通过光纤监测系统、灌注液氮、压注凝胶及高分子胶体等防灭火技术措施，杜绝了自燃发火事故，保证了工作面安全正常回采。