Soil slope instability risk perception system based on active source electric field variation rule

Abstract

The invention discloses a soil slope instability risk perception system based on an active source electric field variation law. The soil slope instability risk perception system comprises an electrodegroup, the electrode group comprises a monitoring unit, the electrode group is arranged on a slope body space, the electrode group covers a slope surface body surface and a slope body, and the electrode group is arranged in an array manner. The soil slope instability risk perception system based on the active source electric field variation law can utilize the soil slope body space to arrange anarray body non-polarized electrode group, measure and reckon the unit body conductivity, determine the instability risk coefficient through perception in combination with the space-time variation lawof the unit body, and give an early warning in time.

Description

technical field [0001] The invention relates to the technical field of slope geological disaster monitoring, in particular to a soil slope instability risk perception system based on the variation law of active source electric field. Background technique [0002] Anchor cables (or anchor rods) have been widely used in slope support and reinforcement. During the construction of the anchor cables, it is necessary to drill anchor cable holes on the slope protection columns and slopes, and then insert the anchor cables into the anchor cable holes. , the end of the anchor cable is anchored on the slope protection column through the support and anchorage, and concrete is poured into the anchor cable hole to seal the anchor. The drilling workload is large and the process operation is complicated, but its main function is to connect the anchor cable body and The bonding and friction effect of the soil layer is increased, which strengthens the stability of the slope body, and its fun...

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Problems solved by technology

However, slope instability is often caused by the development of internal cracks, changes in slope stress or water seepage, external observation and monitoring technology has great limitations, and the observation process is mostly manual, with subjective analysis errors and instrument operation errors and other inaccurate factors, resulting in limited accuracy of observation results

[0004] With the development of geoelectric detection technology, geoelectric detection technology such as high-density electrical method has been applied to slope survey, that is, a plurality of electrodes are arranged on the surface of the slope, and the internal depth of the slope can be reflected by the electric sounding method and the electric profile method. However, this is only a two-dimensional survey, and the evolution of the slope failure zone cannot be accurately positioned and tracked. Moreover, the use of this method alone on the surface layer of the slope is greatly affected by the environment and method, which is not conducive to long-term fixed monitoring of landslides.

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