Automatic long-term monitoring system and monitoring method for severe roadbed deformation

Abstract

The invention relates to an automatic long-term monitoring system for severe roadbed deformation. Generally roadbed settlement is manually monitored, and the manual process is complex and low in precision and mutually interferes with construction machinery often. The automatic long-term monitoring system comprises sensors, a data acquisition processing module, a communication module, a power module and a PC (personal computer). The data acquisition processing module receives analog voltage signals output by the sensors and converts the voltage signals into digital signals. The digital signals are wirelessly transmitted to the PC through the communication module. The power module powers the sensor, the data acquisition processing module and the communication module. The settlement data short-messages are wirelessly transmitted remotely through a GPRS (general packet radio service) module. The automatic monitoring system is capable of monitoring severe deformation with high precision under various roadbed conditions for a long time and does not interfere with construction and passage of construction machinery, multilayer and multipoint layout and monitoring data acquisition can be achieved, the system is insusceptible to travelling vehicles after roads are accessible by the vehicles, and wireless remote monitoring and management are achieved.

Description

technical field [0001] The invention belongs to the technical fields of road engineering technology and electronic information and automation, and in particular relates to an automatic monitoring system for long-term large deformation of roadbed and a monitoring method thereof. Background technique [0002] Subgrade settlement monitoring is an important part of subgrade construction control and guidance for post-maintenance. The settlement monitoring data can be used to analyze the stability of the subgrade, measure earthwork, determine the paving time of the pavement structure, and diagnose the health of the road during operation. In actual engineering, settlement monitoring is generally required for subgrade projects with large deformation, such as soft soil subgrade, collapsible loess subgrade, saline soil subgrade, frozen soil subgrade and various high fill subgrades. [0003] At present, the subgrade settlement monitoring method commonly used at home and abroad is the ...

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Problems solved by technology

[0003] At present, the subgrade settlement monitoring method commonly used at home and abroad is the manually operated settlement plate method (the form of the settlement plate includes a rod type, a sleeve type, a water cup type, etc.), which is complex in process, labor-intensive, time-consuming, and has low observation accuracy. It often interferes with co

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