摘要
厚煤层综放开采易造成上下隅角向采空区大量漏风从而诱发煤炭自燃,而隅角封堵是解决工作面隅角漏风、防治自燃灾害的有效方法。通过优化传统封堵气囊选用材料、设计性能指标,成功设计出一种集阻燃耐寒、轻便抗冲击、变形可塑性于一体的新型隅角快速封堵气囊。对该气囊进行了抗压和抗冲击物理试验,结果均达到额定工作压力,并在彬长矿区文家坡煤矿4105综放工作面对新型封堵气囊进行了现场试验。结果表明,采用组合封堵气囊封堵下隅角后,能够有效封堵隅角整个断面,防止工作面隅角漏风,可以大幅降低工人的劳动强度,显著提升工作效率,减少遗煤浪费,并且气囊可多次重复利用,降低了隅角封堵的成本。
Fully mechanized caving mining in thick coal seams is easy to cause a large amount of air leakage from the upper and lower corners to the goaf, thus inducing coal spontaneous combustion, corner plugging is an effective method to solve the air leakage at the corner of the working face and prevent spontaneous combustion.By optimizing the materials and design performance indexes of the traditional plugging air bag, a new corner quick plugging air bag with flame retardancy, cold resistance, lightweight impact resistance and deformation plasticity is successfully designed.The physical tests of compression resistance and impact resistance of this air bag were carried out, and the results reached the rated working pressure, and the field test was carried out in the 4105 fully mechanized caving face of Wenjiapo Coal Mine in Binchang mining area.The results shows that after the lower corner was blocked by the combined plugging air bag, the whole section of the corner was effectively blocked to prevent air leakage at the corner of the working face;Greatly reduce the labor intensity of workers, significantly improve the work efficiency, reduce the waste of residual coal, and the air bag can be reused for many times, reducing the corner plugging cost.
作者
史默
樊亮
杨剑
张园
李苏虎
和递
SHI Mo;FAN Liang;YANG Jian;ZHANG Yuan;LI Suhu;HE Di(Shaanxi Binchang Wenjiapo Mining Co.,Ltd.,Xianyang 713500,China;College of Safety Science and Engineering,Xi’an University of Science and Technology,Xi’an 710054,China)
出处
《陕西煤炭》
2023年第1期83-87,共5页
Shaanxi Coal
关键词
煤层开采
采空区漏风
煤炭自燃
隅角封堵
快速封堵气囊
coal seam mining
air leakage in goaf
coal spontaneous combustion
corner plugging
quick plugging air bag
