摘要
煤层气是一种清洁高效的新能源,开发和利用煤层气可有效弥补天然气和石油类等传统资源的不足。但是煤层气的开发利用同样会对环境造成影响。在对陕西某井田调查中发现,其采出水中氯化物严重超标,且个别井场将采出水临时存放在无防渗措施的地表容器内,这样可能会造成地下水污染,继而影响周边居民饮水健康。本文以氯化物为预测因子,利用地下水数值模拟软件Visual MODFLOW对采出水进入地下水后污染物的迁移路径和污染范围进行模拟,结果表明,因该井场距离周边水源井距离较远,且含水层的渗透性较差,减缓了污染物的下渗速度,污染物基本不会对周围居民饮水健康造成影响。
Coal bed methane （CBM） is a kind of cheap, clean and high efficiency new type energy,its exploitation and utilization can make up insufficiency of conventional natural gas and fuel oil. But the ground development of CBM has important influenced on environment. Based on the investigation in Shan＇xi mining area,it is found that the concentration of the chloride is hundreds times over the standard and,as well as the produced water was stored in a tank without impermeable function, which may caused the contamination goes into the groundwater and influenced drinking water. Chloride was chosen as the forecast factor in simulating the contamination migration and range of groundwater using Visual MODFLOW. The result shows that because the drinking water well is far away from the contamination and the K value of the aquifer is very low, which delays the seepage process of the contaminant, the contamination will not influence the drinking water well.
出处
《中国矿业》
北大核心
2013年第5期57-60,共4页
China Mining Magazine
