煤田地质与勘探

2016, v.44;No.257(05) 91-96

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浅埋煤层回采中顶板含水层涌水量的时空动态预测技术
Water inflows prediction technique of water inflow from roof aquifer during extraction of shallow seam

虎维岳;
HU Weiyue;Shaanxi Key Laboratory of Coal Mine Water Hazard Prevention and Control Technology;Xi'an Research Institute,China Coal Technology and Engineering Group Corp.;

摘要(Abstract):

针对煤层回采工作面顶板涌水量超前预测精度低,预测结果的时间空间概念不清,对生产实际的指导性不强等问题,从煤层回采的时空变化和地下水流演化过程入手,从理论上分析了以大井法、廊道法为代表的解析法预测工作面顶板涌水量存在的主要问题,提出了浅埋煤层回采过程中顶板含水层充水水量由脉动式静储水量释放与渐增式动态补给水量共同组成,并给出了随矿井采掘过程进行的渐进式矿井涌水量时空动态预测方法,不仅计算了全矿井涌水量的大小,也给出了涌水量的时间变化过程和空间分布特征。大大提高了预测结果的精度,对生产有实际指导意义。结合一实际矿井的采掘规划与生产接续计划,引进了新增水量、干扰水量及残余水量的概念,计算预测了矿井2011年—2015年生产过程中矿井涌水量及其动态变化过程。
Aming at the problems such as low prediction accuracy, vague time-spacial concept and bad guidance to actual production of prediction of water inflows from roof of mining face, the paper, from the time-cpatial variation of coal extraction and the evoluation of groundwater flow, analysed theoreticaly the major problems of analytic method represented mainly by big-well method and gallery method to predict water inflow from the floor of working face, put forward that during extraction of shallow seam the water recharge in roof aquifer was composed of the released volume of pulsatile-typed static water storage and gradualy increased dynamic water racharge, gave thetime-spatial dynamic prediction method of dradualy increased mine water inflow during extraction, not only the amplitude of the water inflow in whole mine, but also the time variation process and the characteristics of spatial distribution of water inflow. It improved greatly the accuracy of prediction results and the actual guiding significance for production. In combination with the mining plan and the subsequent production plan, it intruduced the concept of newly increased water yield, interferential water yield and residual water yield, calculated and predicted the water inflow and ist dynamic variation process in a mine during 2011 to 2015.

关键词(KeyWords): 浅埋煤层;顶板含水层;充水特征;动态涌水;水量预测
shallow seam;roof aquifer;water-filling characteristics;dynamic inflows;inflow prediction

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作者(Authors): 虎维岳;
HU Weiyue;Shaanxi Key Laboratory of Coal Mine Water Hazard Prevention and Control Technology;Xi'an Research Institute,China Coal Technology and Engineering Group Corp.;

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