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以神东矿区补连塔煤矿22307综采工作面为案例,分析了浅埋深超大面积采空区综采工作面低氧现象产生的原因,分析认为采空区与综采工作面之间时刻处于一种多元动态平衡的状态,打破平衡最直接的因素是大气压变化。对前期防治的一些引流、卸压等技术及其效果进行评估,发现其防治效果不是很理想;重点对均压通风技术的实施及防治效果进行介绍,结果表明:在众多低氧防治措施中,均压通风技术对低氧防治效果最为理想。
Taking the 22307 fully mechanized mining face of the BuLinta Coal Mine in Shendong Mining Area as an example, the reason of the hypoxia phenomenon in fully mechanized coal mining face in shallow buried deep super-large area mined-out area is analyzed. It is analyzed that the time between the goaf and fully mechanized mining face In a state of multiple dynamic equilibrium, the most direct factor to break the balance is the change of atmospheric pressure. Some preliminary prevention and control of drainage and pressure relief technologies and their effects were evaluated and found that the control effect is not very satisfactory; focus on the implementation of pressure equalization ventilation technology and prevention and control effects are introduced, the results showed that: Among the many measures to prevent and control hypoxia, Pressure equalization ventilation technology is the best for prevention and control of hypoxia.