摘要
针对我国西部榆神府矿区大规模煤炭开采与脆弱生态环境保护的矛盾,对榆神府矿区尤其是重点煤矿的保水采煤受保护含水层进行了研究。研究表明,萨拉乌苏组是该区的主要含水层,是矿区保水采煤的目标保护层,同时还是煤矿水害的主要水源。萨拉乌苏组含水层适合沙生植被生长发育,是生态潜水。萨拉乌苏组含水层接受大气降水补给,以下降泉的形式排泄。这些泉是窟野河、秃尾河、榆溪河(无定河)的主要补给来源,并是黄河中游约18%的补给来源。受高强度采煤影响,部分萨拉乌苏组的自然排泄受到干扰,如泉流量衰减甚至干涸、河流断流等,影响了区域生态环境。应采取保水采煤技术,确保开采后生态水位在15 m以内。
Concerning the contradictions between protection of the vulnerable ecological environment and large-scale mining in Yushenfu mining area of western China, the protected aquifer of water preserving mining in key coal mines at Yushenfu was investigated. The study has shown that Salawusu formation is the main aquifer, which is the protection target during water preserving mining in Yushenfu mining area and also the main water source of the coal mine water disaster. Salawusu formation aquifer is the ecological phreatic water, suitable for growth and development of the sand vegetation. The Salawusu formation aquifer is mainly recharged by the rainfall, and the gravity spring is the discharge mode. These springs are the major recharge sources of Kuye River, Tuwei River, and Yuxi River（Wuding River）, and also account for 18% of the water recharge of the middle Yellow River. Affected by the high-intensity mining, regional ecological environment has been changed, and the natural discharge of partial Salawusu formation aquifer has been disturbed, such as river blanking and spring flow decreasing, even drying up, which influence the regional ecological environment. The water pre serving mining technology should be used to keep the ecological water level within 15 m after mining.
作者
仵拨云
彭捷
向茂西
范立民
WU Boyun;PENG Jie;XIANG Maoxi;FAN Limin(Key Laboratory of Mine Geological Hazard Mechanism and Control,Shaanxi Institute of Geo-Environment Monitoring,Xi＇an,Shaanxi 710054,China)
出处
《采矿与安全工程学报》
EI
CSCD
北大核心
2018年第5期984-990,共7页
Journal of Mining & Safety Engineering
基金
国家重点基础研究发展计划(973)项目(2013CB227901)
陕西省科学技术推广计划项目(2011TG-01)
陕西省公益性地质调查项目(2013020101)研究
