| With the increasing development and utilization of underground space, there is a rapid rise in deep foundation pit projects. The design and construction of deep foundation pit support remain hot issues and technical knots in respects of safety and economy due to many limitations of various ground and circumstance conditions.The present thesis researches into the application of horizontal sprayed anchor net support technology in deep foundation pit project. First, with the detailed introduction of the construction of the foundation in Hebei Art Centre Project, the thesis analyses its foundation pit horizontal sprayed anchor net support plan, including plan selection, plan design, calculation condition, calculation principle, calculation method and the result. Based on the above, through the collection and analysis of many technical data and the summary of practical experience, taking the characteristics of Hebei Art Centre Project into account, the thesis studies the working process, quality and safety guarantee measures of horizontal sprayed anchor net support; analyses and evaluates the effect of different design parameters on the working performance and also the points for attention when selecting design parameters; meanwhile, proposes guarantee measures for construction safety and quality under different complex conditions; thus, the vertical support technical problem is solved in the deep foundation excavation works. Finally, economic and technical analysis is made on the deep foundation pit horizontal sprayed anchor net support plan of Hebei Art Centre Project. The present research work has made contribution to ensure that the construction of foundation works in Hebei Art Centre can achieve the object of advanced technology, reasonable costs and short work period, and also to provide reliable practical experience and technical guarantee for the application of horizontal sprayed anchor net support technology in similar projects.
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