基于框架模型的煤层气开发生态效应评价

Ecological Effect Evaluation of CBM Development Based on PSR Framework Model

针对山西煤层气生态系统特征,运用"压力-状态-响应"(PSR)评价模型,构建了煤层气生态系统评价框架和评价指标体系,采用层次法对其进行了评价。评价结果表明:煤层气开发排放的煤层采出水和钻井废液、建设过程产生的废弃土方、植被破坏对生态环境影响较大。应及时采取有效措施保护煤层气开发的生态环境。

According to the characteristics of coalbed methane(C BM)in Shanxi ecological system,using pressure-state-response(P SR)evaluation model,CBM ecosystem evaluation framework and evaluation index system were constructed and using Analytic Hierarchy Process(AHP)to evaluate the system.The evaluation results show that the produced water,waste drilling fluid,abandoned earthwork produced in CBM development and the destruction of vegetation have greater impact on the ecological environment.Effective measures should be taken to protect the ecological environment when developing CBM.