Conventional Monitoring Methods and Improvements in Public Geohazard Monitoring and Prevention

Abstract

Monitoring is the key part of public geohazard monitoring and prevention. However, the data quality obtained by current monitoring methods in public geohazard monitoring and prevention is poor. Although thousands of landslides are monitored, but the results can hardly be excavated. To solve those problem, by repeatedly groping and trying, we have improved the monitoring methods or devices in the aspects of macroscopic deformation, ground fissure, building cracks and groundwater. The following results are obtained: For macro deformation, taking photos with smart phone can monitor, storage and transfer macro deformation information. For ground fissure, high precision data can be obtained by construction solid piles and measuring with digital convergent- meter. The mortar strip can accurately reflect the ground cracking and solve the problem of crack closure. For building cracks, layout steel nails across the cracks and measure the distance with vernier caliper can obtain high precision data. The improved sticker method can obtain the deformation rate of wall cracks. For groundwater level, the water level data of low cost and high precision is obtained through the development of the multimeter water level meter.