摘要
为提高段王煤矿井下的防尘效果,考察8+9~#和15~#两个主采层的煤层注水可行性.采用实地取样和实验测定方法,测定煤样的原有水分、孔隙率、吸水率和坚固性系数等4个指标,据此判定2个煤层均符合可注水条件.为预判注水效果,实验测定煤的湿润角,得到2个煤层的湿润角均小于90°,表明煤的湿润性好,有利于降尘,注水时无须添加湿润剂.综合考虑煤层裂隙发育程度、煤湿润边角、饱和水分增值、坚固性系数、埋藏深度等因素,运用聚类分析方法,对未来注水综合难易程度做出经验性评估,指出2个煤层均属于比较容易注水煤层的聚类划分类别.根据段王煤矿瓦斯抽采密集钻孔布置实际条件,制定利用瓦斯抽采钻孔的煤层注水工艺方式和工艺参数.
To improve the dust-control effects of Duanwang mine, this paper carried out research on the feasibility of coal seam water injection. Through field survey of two primary mineable coal beds：8＋9^# and 15^#, and experimental determining the 4 indicators of the coal sample, including original water, porosity, water absorption and firmness coefficient, the determining results show that the two coal seams are both fit for the water injection. To pre-judgement the water injection effects, the wetting angle of coal was experimentally determined, and obtained wetting angle of two coal seams are both less than ninety degree, indicating the good wettability of coal which is beneficial for dust-proofing, and there＇s no need to add wetting agent when water injection. With the comprehensive consideration of coal seam fracture degree, wetting angle, saturated moisture increment, firmness coefficient, buried depth and other factors, and by using the cluster analysis method, this paper performed empirical evaluation on comprehensive difficult degree of future water injection, and pointed out that the two coal seams are both belong to the clustering category of easy to water injecting. According to gas extraction borehole layout of actual dense, relevant technical pattern and technological parameter of water injection was established in addition to considering and utilizing gas extraction hole.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2017年第11期1121-1125,共5页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金(51774170
51174109)
辽宁省高等学校优秀人才支持计划资助(LJQ2015046)
关键词
注水防尘
煤样实验
可注水性
湿润性实验
模糊聚类
瓦斯抽采钻孔注水
water injection and dust-control
coal sample experiment
flood ability
wetting test
fuzzy clusteringanalysis
gas extraction hole water injection
