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盖斯河矿(GaysRiverMine)的水文地质条件和地下采矿环境都很复杂。在矿山投产初期,由于未能控制矿山涌水量,使生产受到影响。最近重新上马的这座矿山仍不能稳定地疏干进入地下工作区的涌水量和保持较低的地下水位。1992年,完成了一系列调查研究工作,其中,部分资金是由加拿大-新斯科舍省矿物开发协议提供的。进行的研究包括:水文化学与疏干井网的评价、溶坑特点的航空测量研究、数字模拟研究以及主测压计安装和表土的研究。研究结果表明,流入地下工作区的水有两个不同的来源:在地下水下降漏斗集水区内的降雨量和附近盖斯河的渗水。另外,还发现了地下水下降漏斗区域和河流渗流量的不确定性。在概述了盖斯河矿地下水问题的来历之后,本文评述了在1991~1992年进行的各种研究工作.并得出结论:该矿区的地下水位是可以控制的。另外,还提出了供进一步研究的若干建议。
Gays River Mine’s hydrogeological conditions and the underground mining environment are complex. In the initial production of the mine, due to failure to control the amount of water in the mine, the production was affected. The recent re-launch of the mine still does not steadily divert water inflow into the underground work area and maintain a low groundwater table. In 1992, a series of investigations and studies were completed, some of which were provided by the Canada-Nova Scotia Mineral Development Agreement. The studies include: hydrochemical and dry-well evaluation, aerosol-based airborne measurements, numerical simulation studies, main piezometer installation and topsoil studies. The results of the study show that there are two different sources of water that flow into the underground work area: rainfall within the groundwater funnel catchment and water seepage from the nearby Goss. In addition, the uncertainty of groundwater descending funnel area and river seepage was also found. After an overview of the origins of the groundwater problem in the Geishe mine, this paper reviews various studies conducted during 1991-1992. And concluded that the groundwater level in the mine area can be controlled. In addition, several suggestions for further research have also been made.