Risk Assessment and Control Measures for Gas Tunnel Construction in Coal Bearing Strata
Based on the high gas tunnel of a coal strata in Yunnan—Guizhou Plateau,various factors affecting tunnel construction risk were analyzed.The fuzzy hierarchical analysis method was to used to calculate the weight of each layer of influencing factors.The fuzzy mathemstics method is applied to evaluate the tunnel construction risk comprehensively,and reasonable construction measures are made according to the risk level.The results show that:under the condition of comparing the scoring of factors affecting the safety of tunnel construction,the construction safety factors account for the largest weight;the fuzzy comprehensive judgment of the risk of tunnel construction results for the tunnel is likely to occur in the process of construction risk;The probability of occurrence of risk in the construction is 0.061,and the grade is 4.We should strengthen the management of construction process and ensure the safty through various technical measures.
gas tunnelrisk evaluationindicator weightsfuzzy hierarchical analysisjudgment matrixtunnel risk
万方数据
维普
