A landslide extensometer

Abstract

The invention relates to a landslide extensometer comprising a protection box and a displacement detecting device, a battery and a GPS device arranged in the protection box; the displacement detectingdevice comprises a sleeve, a sliding telescopic body sliding in the sleeve and trigger switches fixed on the inner wall of the sleeve and abutting against the sliding telescopic body; and a pull wireis connected to the outer end of the sliding telescopic body. The landslide extensometer is simple in structure, relatively small in size and convenient to carry. In the process of changing and displacement of a crack, the position of the monitoring point will also change accordingly; the landslide extensometer has a built-in small GPS positioning system which can accurately determine the position of the monitoring point so as to reflect the changing and the displacement of the crack more vividly; the landslide extensometer only allows one-time use, which reduces the production cost brought by the structures such as belts and coil boxes; and a wireless short-range signal transmission system is adopted, so that data transmission can be completed with a peripheral circuit without application to a communication protocol.

Description

technical field [0001] The invention relates to the technical field of geological displacement monitoring, in particular to a landslide extensometer. Background technique [0002] Automatic monitoring of landslides is an effective method to realize real-time monitoring and early warning of geological disasters. A large number of landslide accidents occur in my country every year. The occurrence of landslides is a process from quantitative change to qualitative change, and the changes that occur inside the landslide are basically invisible to the naked eye. However, it is necessary to use precision instruments to monitor the dynamics of the disaster body. Automatic monitoring can realize remote unmanned real-time monitoring, saving manpower and material resources. Automatic monitoring has an early warning threshold. When the change value of the disaster body reaches the early warning threshold, the alarm system will be triggered and an alarm message will be sent. Residents ar...

AI Technical Summary

Problems solved by technology

[0005] 1. The internal structure of the sensor is relatively complex, and the equipment is large in size. The use of extensometers is generally in places with relatively complex terrain and terrain in the field. Whether it is carried manually or mechanically, it is difficult to carry, and the transportation cost will also increase

[0006] 2. During the process of crack displacement changes, the position of the monitoring point will also change accordingly. The change of the monitoring point can reflect the displacement change of the crack more vividly. The traditional landslide extensometer cannot locate the monitoring point. Location

[0007] 3. The use of the extensometer is disposable, and the total length of the belt connected to the cable inside is relatively large. It is necessary to use the wire reel box to control the length of the belt, which will make the overall volume of the equipment larger and increase the production of the project in terms of material costs. cost

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