Stratum hierarchical displacement monitoring method

Abstract

The invention discloses a stratum hierarchical displacement monitoring method. Hierarchical displacement is monitored by means of combining single-point displacement gauge and hydrostatic water gauge, measuring points of different depth in the longitudinal direction are converted to the same place through a coordinate transformation mode, and the purpose of hierarchical displacement is realized. The method includes the steps of 1), arranging a hardening platform in the positions of the earth's surface of measuring points so as to have monitoring facilitated; 2), drilling for excavation and mounting the single-point displacement gauge; 3), after mounting of the single-point displacement gauge, welding a clean tripod to the side wall of a steel cylinder and then mounting the hydrostatic water gauge; 4), connecting cables led out from the single-point displacement gauge and the hydrostatic water gauge to an automated collection unit for real-time monitoring.

Description

technical field [0001] The invention relates to the technical field of stratum monitoring, in particular to a monitoring method for stratum delamination displacement. Background technique [0002] With the rapid development of my country's national economy and the continuous acceleration of urbanization, the problem of urban traffic congestion is becoming increasingly serious. In order to solve the increasingly severe traffic problems, major cities have begun to develop urban rail transit. The shield method has gradually become the main force in the construction of urban rail transit tunnels in my country because of its advantages of high degree of mechanization, fast construction speed and little disturbance to the surrounding environment. Taking Beijing as an example, the current shield method accounts for the majority of the construction of interval tunnels. The proportion has surpassed the mining method, and has become the largest construction method in the construction o...

AI Technical Summary

Problems solved by technology

Multi-point displacement meters usually assume that the deepest point of the formation is the base point (displacement is zero), and other points produce relative displacements relative to the points. In most rock formations, the magnetic ring layered subsidence instrument is used in the soil layer, but the measurement accuracy is relatively low. Low, the accuracy is usually greater than 2mm, it is difficult to meet the requirements of layered settlement control in shield construction, when the shield passes through major risk projects, the deformation is usually required to be controlled within 3mm, and the measurement accuracy is required to be within 0.1mm

Images