3、。 [Abstract ] With the development of urban construction, the price of land in all the urban centers has become increasingly expensive. Seeking more space in the air and to the deeper underground has become the builder’s common means of pursuing economic benefit. In Shenzhen, Guangzhou,
4、Dongguan and other places, the excavation of the depth of foundation pit is becoming deeper and deeper, from the initial 4-8 meters to more than 20 meters now. Due to the nature of the underground soil, loading conditions, the 1818毕业论文complexity of the construction environment, there are
5、 often many uncertainties while choosing the programs of design and construction solely based on the information of geological survey and the parameters of geotechnical test, especially to those large and medium-sized complex constructions or those strict environmental requirement projec
6、t. The monitoring of the deformation of soil properties, the environment, the buildings nearby and the underground facilities has become the essential process in the project construction. At present, the foundation pit monitoring, project designing, constructing are classified as the thr
7、ee essential factors. The foundation pit monitoring will surely be the key to ensure the quality of deep foundation pit and safety, and an im[关键词]深基坑；基坑监测；时效性；位移；沉降 随差高层建筑高度不断升高,要求地下建筑基础埋深也越来越深,深基坑支护技术在全国不同地区、不同的地质条件下取得了不少成功的经验。 基坑监测是深基坑变形观测的主要手段，主要进行基坑的位移、沉降，锚索应力等的观测为基坑
