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首页> 外文会议>Pipeline Division Specialty Conference; 20050821-24; Houston,TX(US) >Centrifuge Experiments to Study Surface Blast Effects on Underground Pipelines
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Centrifuge Experiments to Study Surface Blast Effects on Underground Pipelines

机译：离心试验研究地下管道表面爆破的影响

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Centrifuge modeling affords a useful tool to study the effects of explosions, since a small quantity of explosives can be used at higher gravity to cause the same effects as a larger quantity under normal gravity. This permits researchers to study the effects of a large explosion on prototype scale, through experiments that use smaller explosives, using scaled models of actual structures. In the subject study, experiments were conducted at 70 g on a geotechnical centrifuge. Models of underground structures (pipelines and tunnels) were buried at two different depths below the ground surface, within model containers. Controlled explosions were conducted at the ground surface, both directly above the model structure, as well as away from the structure. The effects of explosions on the structure were recorded in the form of strain measurements taken at different locations of the underground structures at different times - before, during, and after the explosions. Results of the data from these experiments provide valuable understanding of the effects of surface blasts. The results will be useful in designing new underground pipelines and tunnels as well as for developing protective retrofits for existing structures.
机译：离心机建模提供了一种有用的工具来研究爆炸的影响，因为少量炸药可以在较高的重力下使用，而在正常重力下可以产生与较大数量的爆炸相同的效果。这使研究人员可以通过使用较小炸药的实验，使用实际结构的缩放模型来研究大型爆炸对原型规模的影响。在主题研究中，在土工离心机上以70 g进行了实验。地下结构（管道和隧道）的模型被埋在地下两个不同深度的模型容器中。在模型结构的正上方和远离结构的地面都进行了受控爆炸。爆炸对结构的影响以应变测量的形式记录在地下结构的不同位置，在爆炸之前，期间和之后的不同时间进行。这些实验的数据结果提供了对表面爆炸影响的有价值的理解。该结果将有助于设计新的地下管道和隧道，以及为现有结构进行防护改造。

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