深基坑支护技术的现状与发展

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　　Deep Pit support technology development and the statusSummary: Deep Pit Supporting technology is the special quality of the road construction process often encountered, although in different parts of the country. different geological conditions made a lot of successful experience, or even in some of the technology to the international level, But there are still some problems which need further study or increased to meet the economic modernization needs. . Based on deep Foundation Pit type of conclusion, the deep excavation works supporting existing technology for some of the problems as well as supporting the development trend in the paper.
　　Keywords : deep excavation works, and supporting type,Construction of the project is a pit ancient times geotechnical characteristics of the subjects, slope excavation and simple wooden blocks envelope can be traced back to ancient times. In fact, human engineering frequent activities of the Foundation works to promote development. 20 Since the 1990s, China's reform, opening up and the national economy has maintained rapid growth situation, National project also advances such as high-rise buildings have sprung up to meet the rapid development for the construction of scientific and technological progress and construction technology, building materials and construction machinery updates and development [1]. To ensure the stability of buildings, infrastructure construction must meet underground Embedded-depth requirements. The height of the building, the higher their buried deeper depth of the excavation works have become increasingly demanding. concomitant emergence of more and more problems, to the construction, especially in the urban center of the construction has brought great difficulties.
　　摘要：深基坑工程支护技术是特殊土质道路施工过程中常常遇见的工程，虽已在全国不同地区、不同的地质条件下取得了不少成功的经验，甚至在一些技术达到了国际水平，但仍存在一些问题需进一步研究或提高，以适应现代化经济建设的需要。.本文通过对深基坑支护类型的总结，提出了深基坑工程支护技术当前存在的一些问题，并对支护技术的发展趋势进行了展望。
　　关键词：深基坑工程，支护类型，施工
　　基坑工程是一个古老而具有时代特点的岩土工程课题，放坡开挖和简易木桩围护可以追溯到远古时代。事实上，人类土木工程的频繁活动促进了基坑工程的发展。20世纪90年代以来，在我国改革开放和国民经济持续高速增长的形势下，全国工程建设亦突飞猛进，高层建筑如雨后春笋般迅速发展，促进了建筑科学技术的进步和施工技术、施工机械和建筑材料的更新与发展[1]。为了保证建筑物的稳定性，建筑基础都必须满足地下埋深嵌固的要求。建筑高度越高，其埋置深度也就越深，对基坑工程的要求越来越高，随之出现的问题也越来越多，这给建筑施工、特别是城市中心区的建筑施工带来了很大的困难。