CURRENT STATUS AND PROSPECT FOR INCLINOMETER APPLICATION IN MONITORING OF LANDSLIDE DEEP DISPLACEMENT

A brief review on the development of inclinometer techniques, used in monitoring of landslide deep displacement, was presented, and the principle and current status of inclinometer techniques were analyzed detailedly, which was aimed at summarizing historical experience and provided scientific reference for the future landslide monitoring study. There are two important indicators in monitoring of landslide deep displacement, they are apex angle and azimuth angle represented borehole deformation size and direction respectively. Inclinometers were divided into pendulum and accelerometer inclinometer, which were used for measuring apex angle. Wheel-guide slot, electronic compass, gyroscope and other means were applied to measure azimuth angle. To illustrate all existing kinds of inclinometer techniques clearly, based on the difference between the apex angle and azimuth angle measurement principles, inclinometer techniques were introduced in classification via combining with examples. In addition, upon the literatures and market investigations, the development status of the inclinometers which were widely used at home and abroad in the 1980s and nowadays were contrastive analyzed; and the fact that landslide monitoring with multiparameter became more and more systematic and automatic was point out.