复杂地质条件下地下工程施工技术的研究与应用

Research and Application of Underground Construction Technology Under Complex Geological Conditions

针对青岛土层分布不均匀、杂填土、岩土结合、持力层起伏较大、邻海等复杂地质特点,结合一些大型工程实例,以整体论的方法综合分析了内放坡结合止水帷幕、桩锚结合止水帷幕和土钉结合止水帷幕等基坑支护方案,研究了保证岩土结合部位稳定的设计与构造、基坑开挖的控制爆破技术及复杂地质条件下锚杆施工等关键技术,并提出复杂地质条件下的多种技术先进、经济合理的方案和选择原则,以及包括基坑工程、桩基础、地基处理、混凝土结构工程在内的多项创新技术。

There are some complex geological characteristics in Qingdao, such as uneven distribution of soil, miscellaneous filling, rock-soil combination, obviously fluctuating of bearing stratum and offshore region. Combining with the examples of some large projects, authors analyze various foundation excavation supporting schemes, including internal slope, piles and anchors as well as soil nails combining with water-proof curtains. Key construction technologies are researched, such as design and structure for keeping stability of reck-soil combining positions, control blasting for foundation excavation as well as anchor construction under complex geology conditions. This article provides various advanced and reasonable construction schemes and selection principles that suit for underground projects under complex geological conditions. It also forms many innovative technologies for foundation pit engineering, pile foundation, foundation treatment and concrete structure engineering.