石油开采对陕北生态脆弱区地质环境影响成灾机理分析

Analysis of the Impact of Petroleum Exploitation on the Geological Environment in the Fragile Ecological Area of Northern Shaanxi

在综合分析陕北地质环境背景的基础上,研究石油开采对地下水、地表水、土壤的影响,通过取样测试分析其成灾机理。得出:目前石油开采区浅层土壤已普遍受到石油开采的污染,土壤样品中石油物质检出率达85.7%;部分河道石油物质超标,已影响到地表水水质;受土壤过滤作用的保护,目前陕北石油开采区地下水基本未受到石油污染,地下水质量主要受原生地质环境及人类活动影响,处于区域稳定、局部污染的状态。最后对陕北石油开采区地质环境保护提出了对策建议。

Based on the comprehensive analysis of the geological environment background in northern Shaanxi,the influence of oil exploitation on groundwater,surface water and soil was studied,and the disaster mechanism was analyzed by sampling test.It is concluded that the shallow soil in oil exploitation area has been polluted by petroleum exploitation,and the detection rate of petroleum substances in soil samples is 85.7%;some of the river oil substances exceed the standard,which has affected the surface water quality;under the protection of soil filtration,the groundwater in northern Shaanxi oil exploitation area has not been polluted by Petroleum basically,and the groundwater has not been polluted by petroleum.The quality is mainly affected by the original geological environment and human activities,and is in a state of regional stability and local pollution.Finally,some countermeasures and suggestions are put forward for the protection of geological environment in the oil exploitation area of Northern Shaanxi.