某急倾斜煤矿采空区上覆管道安全性评价分析

Safety Evaluation and Analysis of Pipelines Overlying Goaf of a Steeply Inclined Coal Mine

为探究急倾斜煤层采空区对上覆管道安全性的影响,利用模糊综合评价法,建立综合评价模型。在考虑管道因素的基础上,将各类危险因素汇总成集,结合现场实际与专家打分情况,确定各级危险因素及其权重。利用模糊评价矩阵经合成算子运算,得到危险因素模糊评价子集,经单值化运算达到对急倾斜煤矿采空区上覆管道安全性评价分析的目的。该文以湖北省某急倾斜煤层煤矿为例,利用该模型对采空区上覆两条管道的安全性进行了评价分析,并通过地表与管道变形沉降的定量计算验证评价结果,证明了该模型的可靠性。

In order to explore the influence on the safety of overlying pipeline by goaf of steep coal seam,a comprehensive evaluation model is established by using fuzzy comprehensive evaluation method.On the basis of considering the pipeline factors,all kinds of risk factors are summarized into a set.Combined with the actual situation of the site and the scoring situation by experts,the risk factors and their weights at all levels are determined.The fuzzy evaluation subset of risk factors is obtained by using the fuzzy evaluation matrix through the synthetic operator operation.After the single value operation,the purpose of safety evaluation and analysis of the overlying pipeline in the goaf of steeply inclined coal mine is achieved.Taking a steeply inclined coal mine in Hubei Province as an example,this paper uses the model to evaluate and analyze the safety of the two pipelines overlying the goaf,and verifies the evaluation results through the quantitative calculation of surface and pipeline deformation and settlement,which proves the reliability of the model.