活性水降低工作面瓦斯涌出强度试验研究

发布时间：2017-12-31 01:36

本文关键词：活性水降低工作面瓦斯涌出强度试验研究　出处：《工矿自动化》2016年04期 　论文类型：期刊论文

【摘要】：为了解决采掘工作面瓦斯超限问题,根据采掘工作面落煤中的瓦斯压力和暴露时间关系,在实验室采用甲烷吸附-解吸装置进行了颗粒煤的前置浸入与后置浸入活性水与纯水2种状态下的瓦斯吸附-解吸对比试验,并在某煤矿井下3个掘进工作面落煤中进行了喷洒活性水与纯水的瓦斯解吸对比试验。结果表明,活性水对颗粒煤前置浸入与后置浸入均具有相同的抑制瓦斯解吸作用;在掘进工作面落煤中喷洒活性水,其瓦斯解吸量相比纯水可降低53.56%~54.76%,初期最大瓦斯涌出速度可降低54.42%~71.29%;在低水压、大流量条件下注入或喷洒活性水比纯水更有利于延缓和降低瓦斯涌出。
[Abstract]:In order to solve the problem of gas exceeding limit in mining face, according to the relationship between gas pressure and exposure time in coal caving face. The methane adsorption-desorption device was used in the laboratory to carry out the gas adsorption-desorption contrast test between pre-immersion and post-immersion of granular coal in active water and pure water. A comparative test of gas desorption between spraying active water and pure water was carried out in 3 coal drivage working faces in a coal mine. The results show that: 1. Active water has the same inhibitory effect on gas desorption in both pre-and post-immersion of granular coal. The amount of gas desorption can be reduced by 53.56% and 54.76%, and the initial maximum gas emission velocity can be reduced by 54.42% and 71.29% by spraying active water in the coal caving face, compared with pure water, the amount of gas desorption can be reduced by 53.56% and 54.76%, respectively. Under the condition of low water pressure and large flow rate, injecting or spraying active water is more favorable to delay and reduce gas emission than pure water.
【作者单位】：安阳市主焦煤业有限责任公司;河南工业大学科学技术处;河南理工大学经济管理学院;河南理工大学能源工程学院;
【基金】：国家重点基础研究发展计划“973”项目(2006CB202204) 国家自然科学基金资助项目(51274090150974056)
【分类号】：TD712.5
【正文快照】： 0引言煤层注水防尘、防自然发火、防治煤与瓦斯和冲击地压已在中国煤矿得到广泛应用。理论与实践表明,只有当煤体中水分达到4%以上才能起到防治瓦斯作用。实际应用中,由于煤的表面自由能较低、透水性较差,使得煤体难以均匀润湿,很难达到预期效果。为了有效提高对煤体的湿润能

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