深基坑施工是土建工程中的重要内容,现代很多土建工程往往在基坑开挖过程中需要的深度较高,所以为了强化深基坑施工安全,必须切实加强深基坑支护施工技术的应用.本文探讨了深基坑支护工程的设计与施工技术方法,以供参考.

针对黄土隧道锚杆作用效果的问题在界内的争论一直比较多，本文将结合客观的经验以及擦用对比试验方法对系统系统锚杆作用做以个系统的研究、分析；以便最后得知在节约工程投资和更好控制支护沉降与变形方面哪个方法更有优势。

隧道作为高速公路工程结构的重要组成部分，因具有特有的灵活性和优越性，在公路运输中发挥着不可替代的重要作用。随着公路建筑的迅速发展，大跨断面隧道工程也在不断增加。现阶段公路隧道的开挖通常采用的是爆破法施工，而爆破振动对隧道周边围岩的稳定性具有很大影响。文章采用 Midas GTS有限元软件，对在爆破荷载作用下的大跨双洞隧道之间的相互影响进行了研究，探寻在爆破法施工的情况下，不同条件下的双洞大跨公路隧道之间的相互影响特征。

More than 80 landslide cases in Chongqing area are analyzed to study the different scale,time and thickness landslides.The influence of atmospheric rainfall,human engineering activities and water level fluctuation on the different types of landslides are therefore studied on the above-mentioned analysis in order to obtain the different abduction elements for different type landslides.Conclusions are drawn that Landslides in Chongqing area are mostly those large-scale and medium-scale ones,and with medium-scale and shallow-layer in particular.Heavy rainfalls,together with human engineering activities,are the main abduction elements for Chongqing landslides which often lead to large-scale landslides.What's more,they are likely to reactivate old and ancient landslides.The rainfall influence on landslides is decreasing with the increase of sliding mass thickness,while that of water level fluctuations is on the opposite.

The mechanical behavior of the wharf structure affects directly the structural design and operating safety.According to the mechanical characteristics of framework pier wharf structures in inland rivers,the finite element method is used to analyze the mechanical behavior of the wharf structure.The pile,column,connection beam and mooring beam adopt spatial uniform beam elements and the cap adopts spatial hexahedral solid element.We calculate 15 different load combinations under the high,medium and low water levels respectively.Based on the comprehensive analysis,6 kinds of controlling conditions are selected,from which the structural deformation and the internal force of the component units are analyzed.The results show that by the three-dimensional finite element method we can calculate the structural deformation and the internal force under complex condition.The results also show that high water current force affects obviously the structural stability of the framework pier wharf,and the internal force of the mooring beam is much larger than that of the connection beam.So we should pay more attention to the structural design of the framework pier wharf.

Based on the stability calculation of the Houzishi landslide by transfer cofficient methods and strength reduction methods of FLAC(Fast Lagrangian Analysis of Continua). The stability of the landslide is computed and analyzed under conditions of the nature situation, water storage of the Three-Gorges and earthquake. The result indicates that FLAC can reflect the law of changes of stress and strain in landslide ,can traceing the changes of displacement, velocity and stress of the keypoints with the time.