隧道施工岩爆安全评价量化指标体系研究

Study on Rock Burst Safety Evaluation Quantitative Index System for Tunneling

岩爆是隧道施工中发生频率较高的突发性地质灾害,可能造成严重后果,必须通过形成岩爆安全评价量化指标体系对岩爆风险进行评估和控制。对事故的机理和分类进行了较为细致的总结,并对岩爆安全指标进行识别。利用以层次分析法为基础并加以改进的乘积标度法处理岩爆安全指标,确定多项目多层次各项指标的相对重要性,形成一套完整的施工岩爆安全评价量化指标体系,并应用于工程实例,得到该工程岩爆总体风险评价等级。

Rock burst is a high-frequency paroxysmal geologic hazard and may cause serious consequences, the risk of rock burst must be evaluated and controlled by forming a rock burst safety evaluation quantitative index system. The mechanism and assortment of bursting rock were summarized meticulously and the safety indexes of rock burst were identified. An improved form of analytic hierarchy process, namely, product scaling method,, was adopted to determine the relative importance of multi-item multi-level indexes. A complete rock burst safety evaluation quantitative index system was formed and put to use in a project, and its rock burst risk evaluation grade was obtained.