Sector-shaped slope crack monitoring device and monitoring method thereof

Abstract

The invention discloses a sector-shaped slope crack monitoring device and a monitoring method thereof. The sector-shaped slope crack monitoring device comprises an installation stand column, a displacement sensor bundling assembly, a data acquisition and transmission assembly and a power supply assembly, the displacement sensor bundling assembly comprises a plurality of displacement sensors and steel strands connected with the displacement sensors, and the displacement sensors are installed at the top of the installation stand column; the steel strand penetrates through the installation stand column and is arranged underground in a sector shape, the data collection and transmission assembly is connected with the displacement sensor bundling assembly and the power supply assembly, data collection, preprocessing and remote transmission are achieved, power is supplied through the power supply assembly, and the data collection and transmission assembly and the power supply assembly are both arranged on the installation stand column. The steel strands connected with the sensors are arranged in a sector shape to form a plurality of monitoring lines, so that the monitoring coverage and capture range is expanded, the monitoring coverage wide area is improved, the monitoring capture blind area is overcome, the crack width and development trend can be rapidly and accurately represented, and the reliability, practicability and comprehensiveness of a monitoring result are improved.

Description

technical field [0001] The invention relates to the technical field of geological disaster and geotechnical engineering monitoring, in particular to a fan-shaped slope crack monitoring device and a monitoring method thereof. Background technique [0002] Ground fissures are geological phenomena in which surface rocks and soils are cracked under the action of natural or human factors, and cracks of a certain length and width are formed. Ground fissures are a slowly developing progressive disaster geology. Affected by the geological environment and human factors, the development of ground fissures is gradual and periodic. As time changes, the hazards of ground fissures make the surrounding area Deformation and stress fields are generated within the geological body. For slope disasters, the development of surface fissures is the most common deformation characterization, and its development trend has a strong correlation with the overall stability of the slope. Therefore, monit...

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Problems solved by technology

[0007] Manual simple monitoring has a large and uncertain gap in the monitoring time domain, and the quality of observation data varies, making it difficult to meet the requirements of long-term continuous observation

[0008] In the existing automatic monitoring technology, different displacement sensing methods are based on the identified surface cracks, and the monitoring work is carried out for the change of its width. It is often difficult to identify cracks. At this time, the pertinence of the monitoring technology is greatly weakened, and there is even the possibility of misjudgment.

In addition, for slopes with potential deformation that have not yet developed ground fissures, the aforementioned conventional monitoring methods are highly dependent on field identification and evaluation, and the deployment of monitoring equipment is highly demanding

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