Differential settlement cumulant measurement method and device

Abstract

The invention provides a differential settlement cumulant measurement method and device. The method comprises the following steps that (1), a plane is determined by three points, a monitoring reference is determined, and specifically, the plane is determined by the three points through utilization of a basic geometric principle; (2), a dip angle is periodically observed, and change of an intersection angle of a monitoring reference plane and a plumb bob direction is observed through adoption of a gravity acceleration type high precision dip angle sensor and a read, transmission and display system thereof; and (3), an observation reference line is selected, the change of a reference plane dip angle in a reference line direction is continuously measured, and an accumulated differential settlement value is computed based on the geometric principle and features of a sedimentation profile. According to the method and the device, continuous and accumulated measurement can be carried out on differential settlement and a monitoring reference can be set according to the features of a monitored structure and monitoring conditions, so the method and the device are applicable to integrated grasp of response features of the monitored structure to disturbance resulting from excavation of underground constructions such as a foundation pit, a tunnel and mining, from various directions.

Description

technical field [0001] The invention relates to the technical field of monitoring differential settlement of adjacent buildings and facilities caused by engineering construction disturbances, in particular to a differential settlement accumulation measurement method and device. Background technique [0002] The excavation of foundation pits, tunnels, mining and other underground projects will inevitably disturb the surrounding rock and soil, and the disturbance amplitude will decrease as the distance from the excavation area increases. Disturbance caused by excavation leads to differential settlement of adjacent buildings, facility foundations and foundations in the disturbed area. Therefore, underground projects such as foundation pits, tunnels, and mining often need to monitor the differential settlement of adjacent buildings, facility foundations, and foundations. Commonly used monitoring methods have many deficiencies and defects, such as inclinometers, which can only m...

AI Technical Summary

Problems solved by technology

Commonly used monitoring methods have many deficiencies and defects, such as inclinometers, which can only monitor one point, a large number of measuring points are expensive, and the continuity of data between different measuring points is poor; settlement based on geometric coordinate measurement (such as leveling) , often subject to the constraints of monitoring accuracy and monitoring conditions, etc.

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