Abstract
A new seismic well logging technique has been developed for identifying the damaged zone around the rock masses that was affected by the stability of rock structures due to excavation of underground. In this study, we firstly purpose to introduce a new seismic well logging technique, then to show the results of the examples applied on rock structures of open-pit limestone mine and an underground power station. Finally, we intend to verify its efficiency. A new seismic well logging technique consisted of trigger sensor, super-elastic probe and signal conditioner was found applicable to evaluate the state of rock mass. From the measured result of rock slope in an open-pit limestone mine due to blasting, we defined that it was able to quantitatively evaluate the extent of damages of rock structures as well as to determine the location of damaged zone. In addition, this technique can measure P- and S-velocities simultaneously. P-velocity measurement from an access tunnel closed underground power station was also successfully carried out for observing the state of rock mass. It is expected that the newly developed seismic well logging technique would be a useful method for evaluating the integrity of rock mass and for ensuring an efficient tunnel support members.
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Kang, SS., Hirata, A., Obara, Y. et al. A new seismic well logging technique and its application. KSCE J Civ Eng 15, 1177–1183 (2011). https://doi.org/10.1007/s12205-011-1108-x
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DOI: https://doi.org/10.1007/s12205-011-1108-x