Abstract
The weak structure plane is an important factor affecting the stability of rock slope, and detecting the spatial structure of the weak structural plane is beneficial to analyze the stability of the slope and estimate the quantity of the landslide. Based on 3D electrical resistivity tomography, a model of rock slope with weak structure plane is established, and the characteristics of three-dimensional resistivity imaging of weak structure plane under different ground water conditions are simulated. The results show that the weak structural plane has a better reflection in 3D electrical resistivity tomography; the distribution of weak structural plane of 3D resistivity imaging can be roughly determined under different ground water conditions; the three-dimensional electrical resistivity tomography is feasible in the detection of weak structural plane of rock slope.
Highlights
China is a mountainous country; the mountainous area of our country accounts for over 50% of the total land area; the problems of geological disasters occur frequently; the problem of slope instability is prominent, which poses a threat to people’s lives
The three-dimensional model of rock slope is established to study the spatial distribution of the weak structure plane under different groundwater conditions, which lays a foundation for promoting the development of three-dimensional electrical resistivity tomography
From XY resistivity distribution diagram can be found to a significantly low resistivity anomaly area and weak structural plane where corresponds to the position, and was a rectangular shape, about 12 m length, about 10 m wide, the result is consistent with the model, indicating that low resistance patterns of the weak structure plane reflected well
Summary
China is a mountainous country; the mountainous area of our country accounts for over 50% of the total land area; the problems of geological disasters occur frequently; the problem of slope instability is prominent, which poses a threat to people’s lives. (2016) Numerical Simulation Study on the Detection of Weak Structural Plane of Rock Slope by Using 3D Electrical Resistivity Tomography. Taking actual engineering as example, Chen Jing [4] has introduced key technical problems and handling methods of cause analysis of applying high density electric prospecting technique to expressway slope landslide. The three-dimensional electrical resistivity tomography is not mature, there are still many problems need further study; but compared with the two-dimensional high density resistivity method, the three-dimensional resistivity imaging can obtain more abundant data; the underground geoelectric perspective and the measuring range are more extensive. The three-dimensional model of rock slope is established to study the spatial distribution of the weak structure plane under different groundwater conditions, which lays a foundation for promoting the development of three-dimensional electrical resistivity tomography
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