地面钻井抽采采空区煤层气地质风险评估

Risk Assessment of Gas Drainage from Abandoned Gob by Surface Wells

从是否有气、能否产气、是否盈利出发,对地面钻井抽采采空区煤层气(简称GD)进行了风险识别;构建了GD风险评估指标体系,并借鉴分段绩点法的思想,提出一种统一不同区块进行GD风险评估时判断矩阵的构建标准。

The risk identification of gas drainage from abandoned gob by surface wells（GD for short）was carried out based ongas storage, gas production, profit or loss. The GD risk assessment system is constructed, and the criteria for constructing the judgment matrix of GD risk assessment of different blocks are proposed by using the idea of subsection grade point method.