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深部边远采场可控循环通风应用技术研究
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摘要
可控循环通风就是有计划地将生产区域部分回风返回到该区域的进风风流中,同时对该区域空气的量和质量进行监控,以确保符合《煤矿安全规程》要求。在进回风流之间设有辅助通风机,籍助于辅助通风机产生的能量,使回风流再循环。可控循环通风的作用主要有风量调节作用、温度调节作用、节能作用。从理论上讲,应用可控循环通风,只要监测监控措施得力,保证有足够的新鲜风量进入循环区域,则可保证在可控循环通风情况下,矿井的安全生产。本文以井亭矿66回采面为研究对象,井亭煤矿目前的通风系统属中央分列式通风,矿井的主要采、掘工作面集中布置在66采区,采区内通风设施多,通风线路长。同时,根据矿井生产安排,在开采66边远采区的同时,开拓61和63采区,另外,矿井内部漏风地点多,漏风量较大,这样造成矿井风量分配在66采区的总风量不足,使该地区主要用风地点风量不足。我们通过现场测定、方案设计、计算机模拟优化、方案实施和资料整理总结分析,得出主要研究结论。本文全面系统地描述矿井通风系统中能量的流动过程、投入、利用、损失等环节的相互关系。为可控循环通风的应用,特别是对衰老矿井解决矿井通风问题提供了清晰的思路和方向。
The meaning of the controllable circulatory ventilation is that bring return air back to intake air in working place. Meanwhile, the volume and quality of air should be watched according to the book "coal mine safety rules". Assistant fan is used at the before of return air .The energy of it make the air return. The rules of controllable circulatory ventilation include: adjusting of air, adjusting of temperature and saving energy. Form the theory to say, if we inspect things well, controllable circulatory ventilation can bring enough fresh air to circulatory places so that coal mine can produce safely. We study the coalface 66 in Jingting coal mine. Ventilating system of this coal mine is of from center place to corner. The main drivage face and coal face of this coal mine converge in mine section 66. There are so many ventilating equipments and ventilating ways are so long in mine sections. We build the mine sections 61 and 63 when we cut coal at the edge of mine section 66 according to the plan. Meanwhile, the situation of coal mine is places of air leakage is so many and the volume of air leakage is so big, which make the shortage of air in mine section 66 and main places using air. According to all of information, we do spot mensuration, design schemes, optimize cyber-simulate, put schemes in practice, tidy up information. Finally, we get the main conclusions. The flowing course of energy contained in ventilation system of underground mine, the relationship between energy investing, energy utilizing and energy losing are analyzed in details. The analysis provides guidance and direction for application, of controlled circulating ventilation in underground mines, especially those old mines.
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