朱仙庄煤矿工作面顺层瓦斯抽采方案优化研究
发布时间：2018-10-17 17:42
【摘要】：在我国,高瓦斯和具有瓦斯突出危险性的矿井大约占了所有矿井总量的30%,而且屡次发生特大严重瓦斯事故和重大瓦斯事故,这类事故到目前为止没有根本性的处理方案,这势必在将来严重影响我国煤矿安全及生产工作的有序进行。 朱仙庄煤矿为煤与瓦斯突出矿井,提高本煤层的瓦斯抽放效果,多年来一直是瓦斯抽放工作中难以解决且在努力解决的问题。如何加大矿井瓦斯抽放力度,研究适合复杂地质条件下矿井瓦斯抽放技术,从根本上防治煤矿瓦斯事故,改善煤矿安全生产条件,实现抽放瓦斯的综合利用,是该矿现阶段需要首先解决的问题。 本文对8煤层顺层抽采钻孔的技术参数及封孔方法进行了优化研究。在朱仙庄876工作而地质条件和瓦斯赋存现状研究的基础上,对抽采钻孔参数及封孔方案进行了工业试验。设计了8煤层876工作面顺层瓦斯抽采钻孔相关参数,并对不同的钻孔间距、钻孔孔径、布置方式及封孔材料钻孔的单孔瓦斯抽采数据进行了测试及分析。分析结果表明,采用聚胺脂封孔,钻孔单孔抽采瓦斯衰减系数最小,钻孔百米极限抽采量较高及百米抽采率相对较高；钻孔口径相对较大的钻孔瓦斯涌出初始流量及瓦斯流量衰减系数较大；在钻孔有效抽放时间内,当抽放时间相同时,钻孔间距越小,预抽率越高。 最终按照《煤矿安全规程》第一百九十条规定的指标判断,在该工作面采取的顺层预抽瓦斯防突措施效果比较显著。876工作面开采范围之内8煤层已经基本消除了煤与瓦斯突出危险性。随着抽放时间的延长,该项措施的防突效果将会更加显著。
[Abstract]:In China, coal mines with high gas and gas outburst risk account for about 30 percent of the total number of mines, and serious gas accidents and major gas accidents occur frequently. So far, there is no fundamental treatment plan for such accidents. This is bound to seriously affect the safety of coal mines and the orderly conduct of production in the future. Zhuxianzhuang coal mine is a coal and gas outburst mine to improve the gas drainage effect in this coal seam, which has been difficult to solve and is hard to solve in the gas drainage work for many years. How to increase the intensity of mine gas drainage, study the mine gas drainage technology suitable for complex geological conditions, prevent and cure coal mine gas accidents fundamentally, improve the safety production conditions of coal mines, and realize the comprehensive utilization of gas drainage. It is the first problem that needs to be solved at the present stage of the mine. In this paper, the technical parameters and sealing method of the borehole in 8 coal seam are optimized. Based on the study of geological conditions and gas occurrence in Zhuxianzhuang 876, industrial tests were carried out on the drilling parameters and sealing scheme. The related parameters of gas drainage borehole in 876 face of No. 8 coal seam are designed, and the data of single hole gas extraction with different borehole spacing, hole aperture, layout and hole sealing material drilling are tested and analyzed. The results show that the gas attenuation coefficient of single borehole is the smallest, the limit extraction capacity of drilling is higher and the extraction rate of 100 meters is relatively high by using polyamine resin to seal holes. The initial flow rate and gas flow attenuation coefficient of the borehole with relatively larger bore diameter are larger; in the effective drainage time of the borehole, the smaller the borehole spacing is, the higher the pre-drainage rate is when the drainage time is the same. Finally judging according to the indexes specified in Article 190 of the Coal Mine Safety regulations, The effect of pre-drainage gas outburst prevention in the face is remarkable. The danger of coal and gas outburst has been basically eliminated in 8 coal seams within the mining range of 876 working face. With the extension of pumping time, the anti-outburst effect of this measure will be more significant.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD712.6
本文编号：2277453
[Abstract]:In China, coal mines with high gas and gas outburst risk account for about 30 percent of the total number of mines, and serious gas accidents and major gas accidents occur frequently. So far, there is no fundamental treatment plan for such accidents. This is bound to seriously affect the safety of coal mines and the orderly conduct of production in the future. Zhuxianzhuang coal mine is a coal and gas outburst mine to improve the gas drainage effect in this coal seam, which has been difficult to solve and is hard to solve in the gas drainage work for many years. How to increase the intensity of mine gas drainage, study the mine gas drainage technology suitable for complex geological conditions, prevent and cure coal mine gas accidents fundamentally, improve the safety production conditions of coal mines, and realize the comprehensive utilization of gas drainage. It is the first problem that needs to be solved at the present stage of the mine. In this paper, the technical parameters and sealing method of the borehole in 8 coal seam are optimized. Based on the study of geological conditions and gas occurrence in Zhuxianzhuang 876, industrial tests were carried out on the drilling parameters and sealing scheme. The related parameters of gas drainage borehole in 876 face of No. 8 coal seam are designed, and the data of single hole gas extraction with different borehole spacing, hole aperture, layout and hole sealing material drilling are tested and analyzed. The results show that the gas attenuation coefficient of single borehole is the smallest, the limit extraction capacity of drilling is higher and the extraction rate of 100 meters is relatively high by using polyamine resin to seal holes. The initial flow rate and gas flow attenuation coefficient of the borehole with relatively larger bore diameter are larger; in the effective drainage time of the borehole, the smaller the borehole spacing is, the higher the pre-drainage rate is when the drainage time is the same. Finally judging according to the indexes specified in Article 190 of the Coal Mine Safety regulations, The effect of pre-drainage gas outburst prevention in the face is remarkable. The danger of coal and gas outburst has been basically eliminated in 8 coal seams within the mining range of 876 working face. With the extension of pumping time, the anti-outburst effect of this measure will be more significant.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD712.6
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