沉井是软土地基中深基础施工方法之一，在工程用地与环境条件受到限制或埋深较大的地下构筑物工程中被广泛应用。

Sink well is one of built method in deep foundation of soft groundwork, it is used widely in limited ground and limited environment or in deep burying construction.

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因此，研究爆炸对建筑物和地下工程的影响及爆炸条件下如何对构筑物加固具有重要的现实意义和社会价值。

So it is in practical significance and social values to study on the explosive damage and the reinforcement of buildings.

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大型基础工程如地下隧道、高架桥、跨江桥、江河堤和水利枢纽等构筑物，它们的使用期长达几十年甚至上百年，对它们进行健康监测的概念很早就提出了。

Many large scale projects such as tunnels, viaducts, river bridges, riverbanks and irrigation works hinge et al. , there use time are as long as several decades or even centuries.

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