多因素对初始释放瓦斯膨胀能影响的实验研究
Experimental Study on Influence of Multi-factor on Expansion Energy of Initial Released Gas
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摘要: 通过对煤层初始释放瓦斯膨胀能的测定，能够实现对煤层突出危险性的准确预测。在单因素对初始释放瓦斯膨胀能影响的研究基础上，通过正交实验研究了包含瓦斯压力、煤样的粒径和水分在内的多因素对初始释放瓦斯膨胀能的影响。研究发现：瓦斯压力、煤样的粒径和水分对初始释放瓦斯膨胀能的影响程度在依次降低；瓦斯压力对初始瓦斯膨胀能的影响程度最大；测定时的抽真空过程会降低煤样原有水分值。Abstract: The measurement of expansion energy of initial released gas can realize the accurate prediction of coal and gas outburst. We studied the influence of many factors including gas pressure and particle size and moisture of coal samples on expansion energy of initial released gas by orthogonal experiments, which is based on the impact research of single factors on expansion energy of initial released gas. The results show that the influence degree of gas pressure, particle size and moisture on initial expansion energy of released gas reduce gradually; the influence of gas pressure on initial expansion energy of released gas is the largest; the determination of vacuum process can reduce the moisture value of original coal sample.
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