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考虑到锚杆支护工程的隐蔽性致使危险性定量分析相对困难,结合基坑锚杆工程管理经验,从工程应用的角度,建立了基坑锚杆工程总体和工序两级危险评估准则,该评估准则主要通过对基坑锚杆工程的方案设计、工程地质、周边环境、施工工艺及施工能力4个方面危险源的详细分析,制定对应于锚杆支护工程总体和各个工序的相应分类标准,然后根据各属性之间不同类别的组合赋予相应的危险等级;最后以某实际工程进行了验证。研究结果表明:这种半定量的危险性评估方法,可以通过对照工程信息与评估准则得到相应危险等级,实现危险的动态评估和及时控制;该方法过程简单易行,结论可靠有效,实现了半定量化评估,具有一定的工程应用价值。
Taking into account the concealment of the bolt supporting project, which makes the quantitative analysis of the risk relatively difficult, combining with the experience of engineering management of the foundation pit bolt, this article establishes the two-level risk assessment criterion of the whole project and the procedure of anchor bolt project from the angle of engineering application The assessment criteria are mainly based on detailed analysis of dangerous sources in four aspects of scheme design, engineering geology, surrounding environment, construction technology and construction capacity of anchor bolt engineering of foundation pit, and formulating the corresponding classification standards corresponding to the overall and each process of bolt support engineering , And then give the appropriate level of danger according to the combination of different categories between the various attributes; Finally, a practical project was verified. The results show that this semi-quantitative risk assessment method can obtain the corresponding risk level by contrasting the engineering information and assessment criteria to realize the dynamic assessment and timely control of the hazard. The method is simple and easy to process, the conclusion is reliable and effective, and the half Quantitative assessment, with some engineering value.