Method and device for automatically monitoring subgrade settlement

Abstract

The invention discloses a method and a device for automatically monitoring the subgrade settlement. The device for automatically monitoring the subgrade settlement is characterized by comprising a first measuring head P1 arranged on a first settlement monitoring point, a second measuring head P2 arranged on a second settlement monitoring point, ..., and an Nth measuring head PN arranged on an Nth settlement monitoring point, a pressure stabilizing device, a control terminal, a liquid filling port and an exhaust port; each measuring head comprises a pressure sensor and a data acquisition circuit and is packed in a mechanical structure, and the pressure sensor and the data acquisition circuit of each measuring head are electrically connected to be connected to the control terminal in a wired or wireless manner; and the measuring heads are connected through a pipeline, the liquid filling port and the exhaust port are installed on the pipeline, and the pipeline is closed and full of liquid. According to the method and the device for automatically monitoring the subgrade settlement, the closed liquid is used as a pressure transmission medium, so that the settlement monitoring is slightly influenced by the environment, the monitoring accuracy is high, the effect on site operation is small, capacity resistant to sudden disasters is strong, the reliability is high, and the fully-automatic continuous monitoring is realized. Therefore, the method and the device can be widely applied to automatic settlement monitoring in roadbed construction period and operating period of railways, highways and the like.

Description

technical field [0001] The invention belongs to the field of precision instruments and machinery, and relates to a settlement monitoring method and device. Background technique [0002] In order to ensure the safety and smoothness of high-speed railway and highway operation, subgrade settlement measurement and monitoring has become a key technical issue in the construction and operation period. During the construction period, it is hoped that the settlement data and settlement laws can be accurately grasped, and the settlement can be continuously monitored during the operation period. When the settlement is abnormal, it can respond in time and take corresponding measures. [0003] At present, the commonly used settlement measurement methods include the settlement measurement method based on the total station and electronic level, the settlement measurement and monitoring method based on the magnetic ring sensor and other physical effect sensors, and the subgrade settlement b...

AI Technical Summary

Problems solved by technology

Although the settlement measurement method based on total station and electronic level has high measurement accuracy, its shortcomings of high cost, low efficiency, poor environmental adaptability, and inability to continuously automate monitoring make it unable to adapt to actual engineering needs

Although the settlement measurement and monitoring method based on physical effect sensors such as magnetic ring sensors has the characteristics of high cost performance and convenient data collection, it also has the problems of large impact on construction and low accuracy.

Using the principle of connecting pipes, the method of monitoring subgrade settlement based on the principle of liquid level changes at different elevation points of the connected liquid has the characteristics of being networkable, continuous and automatic monitoring, and high precision. Problems such as slow dynamic response, difficult on-site construction, high maintenance cost, and large site occupation are not conducive to the application of harsh environments and the timely disposal of sudden settlement situations. Big

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