Imaging of underground karst water channels using an improved multichannel transient Rayleigh wave detecting method.

ABSTRACT: Geological and hydrogeological conditions in karst areas are complicated from the viewpoint of engineering. The construction of underground structures in these areas is often disturbed by the gushing of karst water, which may delay the construction schedule, result in economic losses, and even cause heavy casualties. In this paper, an innovative method of multichannel transient Rayleigh wave detecting is proposed by introducing the concept of arrival time difference phase between channels (TDP). Overcoming the restriction of the space-sampling law, the proposed method can extract the phase velocities of different frequency components from only two channels of transient Rayleigh wave recorded on two adjacent detecting points. This feature greatly improves the work efficiency and lateral res

SUBMITTER: Zheng X 

PROVIDER: S-EPMC5993300 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature