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1、附 录1. 外文资料原件及译文（1）外文资料原件Safety Monitoring and Early Warning for Deep Foundation Pit ConstructionHaibiao WANG【1】，Haixu YANG 【2】, Xibin DONG 【3】, and Songyuan NI【4】1.School of Engineering Technique, Northeast Forestry University, Harbin,Heilongjiang 150040, China; PH (086) 451-82191771; email: 2.Schoo
2、l of Civil Engineering , Northeast Forestry University, Harbin, Heilongjiang150040, China; PH (086) 451-82190402; email: 3.School of Engineering Technique, Northeast Forestry University, Harbin,Heilongjiang 150040, China; PH (086) 451-82190392; email: 4.School of Engineering Technique, Northeast For
3、estry University, Harbin,Heilongjiang 150040, China; PH (086) 451-82190335; email: ABSTRACT Based on an engineering project, this paper initially establishes an observation point for foundation pit and then determines monitor warning value. During project construction, we carried out an experiment o
4、n the horizontal movement and settlement and inclination of adjacent buildings and promptly monitored the foundation pit., Scientific analysis of the data is presented. This work is designed to provide for effective measures to implement security alerts for foundation construction.Detailed analysis
5、examines the causes of deformation of foundation pit and offers a reasonable treatment measure. Results offer some scientific basis and technical measures to guarantee deep foundation project construction security and more knowledgeable engineering construction.With the rapid development of urbaniza
6、tion in China, the deep excavation works require have been put forward strict demand regulations concerning due to the requirements of the spatial location, structural stability and using function. Deep excavation engineering is mostly carried out in areas of heavy traffic and dense construction. Th
7、e complexity associated with deep excavation depth and difficult construction creates environments where serious accidents can occur. The deep excavation work is a wide-ranging and integrated engineering process.Previous research on accidents in national deep foundation pit engineering found the gen
8、eral accident ratio was about 20% of that of the deep excavations work (Tang, 1997). Most accidents in urban areas were caused by foundation pit support. In deep excavation engineering, both the strength and deformation of the supporting structure and the surrounding environment affected by pit defo
9、rmation should be considered (Sun, 2006).The pit support systems are always temporary facilities with fewer safety considerations and more hazards. Working status and conditions are more complicated and uncertain. Thus, during the construction process, dynamic monitoring and control is very importan
10、t. The content of deep excavation-site monitoring generally includes the horizontal displacement of supporting structure, tilt displacement of neighboring buildings, sedimentation of adjacent roads and so on. A monitoring crew should provide timely feedback information (Liu, 2006) to detect any prob
11、lems and provide early warnings for reducing disasters. A monitoring program that provides critical information and manages deep excavation construction scientifically and effectively is the key to successful deep excavation construction(Liu et al., 2007).1ENGINEERING BACKGROUNDThe deep foundation p
12、it engineering was located at the city center. The ground form type of geological investigation works is the tectonic denudation and the slow hillock at slope base, which was equal to the forefront of third terrace of the Yangtze River and the southwest bordered on the first terrace of the Chengdu p
13、lain. Soil conditions. Through the field investigation by the Geological Survey Department, the soil conditions at the engineering site are shown as Table 1. Table 1. Physical-mechanics index of foundation soil.Soil density Plasticity Cohesion InternalNo. Name of Soil Samples /kN.m-3 Index c/kpa fri
14、ction Angle/01-1 Miscellaneous fill soil 19.1 13.1 5 20 1-2 Plain soil 19.3 11.8 15 122-1 Silt clay 19.5 12.3 25 143-1 Clay 18.5 13.1 42 16Hydrological geology conditions of underground. Surface water of the proposed site is not present-development, and the underground water was dominated by the bed
15、rock fracture water. and the small amount of the upper perched water filled in the 1-1 layer of soil-with-filled.They mainly were supplied by the precipitation and infiltration of surface runoff.The water level of the upper perched water is discontinuous and had smaller water volume. The bedrock fracture water grew well nearby
