谷坊工程是泥石流治理中常用的工程措施之一。基于谷坊工程的各种破坏模式,对谷坊工程设计影响强烈的载荷因子进行特征分析,并根据失效模式确定结构功能函数,从谷坊工程的抗倾稳定、抗滑稳定和基底承载力要求三方面建立极限状态方程,推导了谷坊防治工程的可靠性分析过程。在此基础上,考虑谷坊系统为并联系统,推导了谷坊防治系统的可靠度计算公式。这对于可靠度设计方法在泥石流防治工程中的运用及其优化设计起到积极的推动作用。 更多还原

Check dam is commonly one of the blocking engineering in harnessing debris flow. By analyzing the solving methods and distribution of sensitive factors which have great influence on the design of blocking engineering such as geotechnical parameters，geometric features and load factors and so on，based on various failure modes of blocking engineering，the structural performance function is determined by failure modes. The limit state equation is built from three aspects including stability against tilting， stability against sliding and base stress requirement and so on. The reliability analysis process of check dam engineering is derived. Based on which，considered the check-dam system as a parallel system，reliability formula of prevention system is derived. It will play an active role in promoting the utiligation of the reliability design method in the debris flow control engineering and optimum design.