Acoustic emission monitoring method used for recognizing rock slope glide plane

Abstract

The invention discloses an acoustic emission monitoring method used for recognizing a rock slope glide plane. A waveguide rod array is arranged inside a rock slope; one waveguide rod embedded in a monitoring hole is filled with 0.1 m thick of cement mortar every other 3 m length of the waveguide rod; an acoustic emission sensor is installed at the end, on the ground, of each waveguide rod; acoustic emission signals generated from rock internal fractures are sent to cement mortar filling parts and then to the waveguide rods; the sensors at the ends of the waveguide rods receive the signals, and finally transmit the signals to an indoor wireless receiving base station through a wireless transmission device; positions, where the signals come from, of the waveguide rods can be fast determined through data analysis and marked with circles; and the trend of the glide plane can be inferred by connecting points with the densest circles on the waveguide rods. According to the acoustic emission monitoring method used for recognizing the rock slope glide plane, a large amount of workload of conventional slope monitoring can be omitted, all-weather automatic recording of the slope can be achieved and are not affected by the climate and weather, and reliable quantitative evaluation can be made on the glide trend of the slope.

Description

technical field [0001] The invention relates to a method for monitoring potential slip surfaces of slopes, in particular to an acoustic emission monitoring method for identifying slip surfaces of rock slopes. Background technique [0002] At present, slope instability and landslides have become a major safety hazard in mountainous road traffic, mining, hydropower and other fields. The occurrence of slope instability and landslide does not occur in an instant time period, but develops from creeping to unstable sliding after a certain period of accumulation of instability factors. The continuous monitoring of the slope deformation, deformation rate and deformation development trend in each period is the core to evaluate whether the slope can produce destructive landslides, so as to timely and safely deal with the slope, and grasp the distribution of potential slip surfaces Law is the key to slope instability monitoring and slope protection. Therefore, effective and accurate m...

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Problems solved by technology

However, there is no clear standard for the layout of the measuring line in this method. Secondly, the effect of this method in detecting sliding layers or sliding zones is obvious, and it is impossible to judge the fissures and cracks in the sliding surface of rock slopes.

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