Abstract
With the development of society, the damage of geological disaster to people's life and property is more serious, so the improvement of monitoring means of geological disaster is particularly urgent, there are some shortcomings in traditional monitoring methods, and it is impossible to measure the three-dimensional displacement of underground. The authors have designed an integrated three-dimensional displacement sensor to measure underground horizontal displacement and vertical displacement and tilt angle, and realize the real-time on-line monitoring of underground three-dimensional displacement visually through multi-group structure co-measurement.
Highlights
China's geological disasters are frequent, widely distributed, frequent and seriously harmful [1], So the realtime on-line monitoring of geological hazards[2] is important, and the most direct monitoring means is to monitor the depth of the underground displacement situation
The use of time domain reflection (TDR) technology monitoring means are difficult to monitor the size of the displacement [7] if the cable does not deform and destroy, and the local deformation of soft clay can not be effectively determined [8]
In view of the shortcomings of the above methods, the author designed an integrated sensor which can measure the three-dimensional displacement of the underground, combined with the communication module, the underground displacement can be monitored more intuitively
Summary
China's geological disasters are frequent, widely distributed, frequent and seriously harmful [1], So the realtime on-line monitoring of geological hazards[2] is important, and the most direct monitoring means is to monitor the depth of the underground displacement situation. The main monitoring methods are borehole inclinometer technology[3], time domain reflection (TDR) testing technology[4], these methods are widely used, there are obvious shortcomings. The use of TDR technology monitoring means are difficult to monitor the size of the displacement [7] if the cable does not deform and destroy, and the local deformation of soft clay can not be effectively determined [8]. In view of the shortcomings of the above methods, the author designed an integrated sensor which can measure the three-dimensional displacement of the underground, combined with the communication module, the underground displacement can be monitored more intuitively. Distance L and the relative displacement direction and tilt angle θ, by comparing with the model which is established by experiments, the displacement data of rock and soil can be obtained, the sensor transmit the displacement data through the 485 bus[9] or wireless data network in real time via the host on the surface, the client can view the displacement data in real-time, so as to more accurately assess the displacement of the rock and soil, easy to develop disaster prevention and mitigation plan
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