摘要
选取宁东煤田鸳鸯湖矿区典型的仰采和俯采工作面为研究对象,利用单指数动力衰减模型,拟合了工作面顶板水疏放钻孔涌水量动态变化规律,分析了模型参数的水文地质学意义,探讨了疏放水效果的主要影响因素。结果表明:在构造不发育或钻孔施工参数差别不明显的条件下,疏放水效果主要受充水含水层水文地质特征影响,其次是含水层形状特征,最后是钻孔施工参数。其中,施工参数中钻孔方位角和钻孔与切眼之间的距离对模型参数影响显著,钻孔仰角和孔深影响较为模糊;含水层水文地质参数中渗透系数和单位涌水量是控制疏放水效果的主要因素,而含水层厚度没有表现出明显的影响。
Using typical overhand and underhand mining coal faces in Yuanyanghu mine area as research objectives, the monoexponential decay function is applied to fit the water-inflow in underground borehole for dynamic changes of content and to analyze the hydrogeological significance of model parameters and to discusses the main factors of drainage effects. The results show that： under the condition of undeveloped of structure or difference in parameters of drilling constructions, the effects of dredging and drainage is mainly affected by the hydrogeological characteristics of the water filled by the aquifer, followed by the shape characteristics of aquifer and finally the drilling parameters. Among them, the cutt drilling azimuth and the distance between holes are important, the borehole elevation and the hole depth is fuzzy; the permeability coefficient and the unit inflow hydrogeological parameters of aquifer in quantity are the main factor to control the effect of water drainage and the water layer thickness shows no significant effects.
作者
周振方
ZHOU Zhenfang(R＆D Center of Mine Disaster Control and Environment Management Technology, Xi＇an Research Institute of China Coal Technology ＆ Engineering Group Corp, Xi＇an, Shaanxi 710054,China;Shaanxi Key Laboratory of Coalmine Water Hazard Control, Xi＇an, Shaanxi 710077, China)
出处
《采矿与安全工程学报》
EI
CSCD
北大核心
2018年第3期642-648,共7页
Journal of Mining & Safety Engineering
基金
国家重点研发计划项目(2017YFCD0804103
2016YFC0501102
2016YFC0501104)
国家自然科学基金项目(41602254
41302214)
中煤科工西安研究院面上项目(2017XAYMS07
2015XAYMS21)
关键词
单指数模型
疏放水钻孔
涌水量
钻孔施工参数
水文地质参数
the monoexponential decay function
drainage borehole underground
water inflow
borehole construction factor
hydrogeology parameters
