柔性管线安全评价的简便方法

随着我国地铁建设的快速发展，地铁施工中邻近管线的安全评价是一项急待解决的关键技术问题。在地层移动基本规律认识基础上，提出了一种经验或半经验的基于变形控制的柔性管线的安全评价方法。该方法可应用于快速评估柔性管线的潜在损害，具体的管线细节一般不予考虑，涉及的参数少，更易于工程应用。该方法尤其适用于没有足够资料或者特殊敏感的条件下，需要对管线的接头单独考虑，需要采用保守估计的情况。

Simple method for evaluating safety of flexible pipelines

With rapid developments of metro construction in China, the safety evaluation of pipelines near tunneling is one of the key technical problems urgent to solve. On the basis of understanding basic laws of ground movements, an empirical or semi-empirical method to evaluate the safeties of flexible pipelines is put forward; and it takes the deformation as the control index. Generally the details of pipelines are not necessary to know, and only a few parameters are involved; so the method is more easy to use in engineering; and it can be used to evaluate the latent damages of flexible pipelines rapidly. The method is particularly fit for the case of no sufficient data or especially sensitive pipelines, where the joints must be treated separately and the conservative estimations are needed.