カバーロック型残壁の変形計測とその解釈

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Stability monitoring of rock slope covered with limestone is an important for safety operation of limestone open cut mine in Japan. In this paper, a series of field measurements has been carried out in a limestone open cut mine and deformation behavior of rock slope with cover rock has been discussed. Results obtained in the present study are summarized as follows.1) The ground penetrating radar prospecting was applied to detect the geological boundary between cover rock and base rock, and it is confirmed that the ground penetrating radar is useful to visualize the geometry of the geological boundary as well as the damaged zone in rock mass.2) The relative displacement measurements have been carried out in two rock slopes, one is a homogeneous type and the other is a cover rock type, by use of the multi-channel-extensometer. From these results, it is clarified that deformation behavior of the slope with cover rock differs remarkably from that of the homogeneous slope, and that the cover rock moved downward along the geological boundary. Furthermore, it is pointed out that the stability of cover rock may be affected by the existence of damaged zone.3) The vertical seismic prospecting was applied to evaluate the damaged zone. Comparing the profiles of P-wave velocity with the displacement distributions obtained by the multi-channel-extensometer, it is confirmed that the seismic prospecting is effective to evaluate the damage of rock.
社団法人資源・素材学会の論文
2003-09-25

カバーロック型残壁の変形計測とその解釈

スポンサーリンク

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