淮北金石矿岩浆顺层侵入煤层对瓦斯赋存规律的影响

发布时间：2018-06-20 13:47

本文选题：安全工程 + 瓦斯赋存　；参考：《安全与环境学报》2016年02期

【摘要】：以淮北金石矿132采区3煤层为对象,通过实验室试验、现场观察、理论分析研究岩浆顺层侵入煤层对瓦斯赋存规律的影响。通过淮北金石矿地勘数据分析岩浆侵入范围及特征,结合煤体瓦斯基本参数,查明影响瓦斯分布规律的主要因素。结果表明:测定范围内大部分瓦斯含量较小,在0.19~6.69 m3/t,部分点存在以游离状态为主的瓦斯积聚现象;煤层瓦斯压力在0.11~0.25 MPa,没有明显规律,瓦斯仍处于瓦斯风化带或向甲烷带的过渡带;f在0.3~2.04,煤体普遍较硬,Δp在133.3~999.8 Pa,瓦斯放散初速度较慢;灰分、挥发分较大,随埋深有上升趋势,二者是影响该区域瓦斯分布规律的主要因素,煤的变质程度变化较大,部分变为天然焦,但大部分区域为煤焦互层。
[Abstract]:Taking No. 2 coal seam in No. 132 mining area of Huaibei goldstone mine as an object, the influence of magmatic intrusion into coal seam on gas occurrence law is studied theoretically through laboratory test and field observation. Based on the geological prospecting data of Huaibei goldstone mine, the scope and characteristics of magma intrusion are analyzed, and the main factors influencing the distribution of gas are found out in combination with the basic parameters of coal body gas. The results show that most of the gas content is small in the range of measurement, at 0.19 ~ 6.69 m ~ (3 / t), there is mainly free gas accumulation in some points, and the gas pressure in coal seam is 0.110.25 MPA, which has no obvious regularity. The gas is still in the gas weathering zone or in the transition zone to methane zone, the coal body is generally hard, 螖 p is 133.3n 999.8 Pa. the initial velocity of gas release is slow, and the ash and volatilization are larger, with the increasing trend of buried depth, the gas is still in the gas weathering zone or in the transition zone to the methane zone, the coal body is generally hard, 螖 p is 133.3n 999.8 Pa. Both of them are the main factors affecting the distribution of gas in this area. The metamorphic degree of coal varies greatly, some of them become natural coke, but most areas are interbedded with coal char.
【作者单位】：河南理工大学安全科学与工程学院;煤炭安全生产河南省协同创新中心;
【基金】：国家自然科学基金面上项目(51374095) 省部共建国家重点实验室开放课题重点项目(WS2012B02) 河南理工大学博士基金项目(B2013-005)
【分类号】：TD712.2

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