Abstract: This article elaborates the basic geological conditions and engineering geological characteristics in the Binhai New Area of Tianjin,and analyses the necessity of conducting a comprehensive system monitoring the layers above the Neogene Minghuazhen Group.In this paper,the working methods of the construction of monitoring system for the layerwise mark in the Binhai New Area are introduced.The setup and structural design of various types of layer monitoring wells with extensometers are outlined in...