摘要
为探讨兴隆庄煤矿下组煤开采水文地质特征及涌水量变化规律,以首采区为地质背景,分析和评价了影响开采的主要含水层、隔水层及其充水通道,得出下组煤开采时直接充水水源为太原组第十下层灰岩含水层,间接充水水源为本溪组第十四层灰岩含水层和奥陶系灰岩含水层;同时采用大井法和比拟法对下组煤开采时的涌水量进行了预测,计算结果表明十下灰正常涌水量为349 m3/h,最大涌水量为418.8 m3/h;十四灰正常疏降涌水量为40 m3/h,最大涌水量为48 m3/h。
In this paper,analysis and evaluation were made on the main water-bearing strata,water-resisting strata and water filling channels which influence the mining by taking the first-mining district as the geological background in order to investigate the hydro-geological characteristics and the variation law of water inflow during the mining of the lower coal group in Xinglongzhuang Mine,and it came to the conclusions that the direct water-filling source was the limestone water-bearing strata of No.10 lower seam in Taiyuan formation,the indirect water-filling source was limestone water-bearing strata of No.14 seam in Benxi formation and the water-bearing strata in Ordovician system.Meanwhile,prediction was carried out on the water inflow during the mining of the lower group coal by using the big well method and the analogy method,the calculated results showed that the normal water inflow from the limestone water-bearing strata of No.10 lower seam was 349 m3/h and the maximum water inflow was 418.8 m3/h,and the normal draining depressurization water inflow from the limestone water-bearing strata of No.14 seam was 40 m3/h and the maximum water inflow was 48 m3/h.These research results have greater reference value for the safe mining and water hazard control of the first-mining district in lower coal group under the safe water pressure of the water-bearing strata.
出处
《矿业安全与环保》
北大核心
2013年第4期73-75,82,共4页
Mining Safety & Environmental Protection
基金
国家自然科学基金项目(41102201)
江苏省普通高校研究生科研创新计划项目(CXZZ12-0948)
关键词
下组煤首采区
水文地质特征
充水通道
涌水量
first-mining district of lower group coal
hydro-geological characteristics
water-filling channel
water inflow
