Abstract: In view of the traditional monitoring method of the landslide deep displacement,the disadvantages of high cost of artificial monitoring,low monitoring frequency and poor real-time performance,a multi-point distributed and real-time monitoring method for deep slope displacement is proposed.The low power microprocessor and the acceleration sensor are utilized to realize the modularization of the measurement unit of this method,and are arbitrarily combined as the sensor groups.The sensor group is arranged vertically into the landslide borehole during the process of construction,so as to measure the inclination angle of each unit of the landslide in real time.The internal deformation value of the landslide body is calculated and the location of the sliding surface is determined based on inclination angle of two adjacent measuring units.The study results show that the measurement method proposed in this paper with the characteristics of high real-time,unattended,arbitrarily extended and and tailoring,and it can effectively reduce the cost of artificial measurement,the effectiveness of the method is also proved by actual application.

Key words: Distributed, Deep displacement, Landslide body, Inclination measurement