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Volume 39 Issue 1
Feb.  2020
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Article Navigation >  CARSOLOGICA SINICA  > 2020  >  39(1): 95-100
LIANG Donghui, GAN Fuping, ZHANG Wei, HAN Kai. Study on the effectiveness of the microtremor HVSR method in detecting underground river pipelines and caves in karst areas[J]. CARSOLOGICA SINICA, 2020, 39(1): 95-100. doi: 10.11932/karst20200104
Citation: LIANG Donghui, GAN Fuping, ZHANG Wei, HAN Kai. Study on the effectiveness of the microtremor HVSR method in detecting underground river pipelines and caves in karst areas[J]. CARSOLOGICA SINICA, 2020, 39(1): 95-100. doi: 10.11932/karst20200104
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Study on the effectiveness of the microtremor HVSR method in detecting underground river pipelines and caves in karst areas

doi: 10.11932/karst20200104

  • Institute of Karst Geology, CAGS/Key Laboratory of Karst Dynamics, MNR&GZAR, Guilin, Guangxi 541004,China

  • Publish Date: 2020-02-25
    Abstract
  • The Microtremor HVSR (Horizontal-to-Vertical Spectral Ratio) method is a simple and effective tool in passive-source seismic exploration. When a significant change of velocity of the medium below the measuring site is present, the HVSR curve can exhibit corresponding abnormal shapes. The purpose of this work is explore the effectiveness of this method in detecting underground river pipelines and caves in karst areas. At the Dayanqian village in the Maocun underground river basin,field experiments were carried out,where exists an underground river pipeline exists.The plane position and cave height of this pipeline were determined by precise cave measurement.Three geophysical survey lines were arranged on the ground over the underground river pipeline in the study area, all of which were measured by the microtremor HVSR method and compared by the ground-penetrating radar measurement. The result shows that the anomaly position by the two geophysical methods are basically consistent with the actual plane position of underground river pipeline below the survey lines, which proves that the microtremor HVSR method can be used as an effective tool in the detection of underground river pipelines and karst caves.

     

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