Detection of Dysplasia Geological Structure of Highway Tunnel Based on High-Density Electric Method

Huang, Zhengjun; Zhang, Lei; Liang, Wei; Liu, Yu; Zhao, Dong

doi:10.1088/1755-1315/189/6/062058

Cited by 1 publication

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“…In addition, the groundwater level variation would cause many physical responses such as the moisture content, resistivity, and effective stress. The resistivity tomography has been effectively applied in groundwater exploration. , Huang used high-density electrical resistivity imaging (ERT) technology to measure the water content of rock formation . Liu carried out laboratory tests to study the water migration using resistivity monitoring data .…”

Section: Introductionmentioning

confidence: 99%

“… 25 , 26 Huang used high-density electrical resistivity imaging (ERT) technology to measure the water content of rock formation. 27 Liu carried out laboratory tests to study the water migration using resistivity monitoring data. 28 Chengliang used integrated geophysical methods, including audio frequency magnetotelluric (AMT), high-density electric signals, and microtremors to detect the soil structure, fault, and hidden karst.…”

Section: Introductionmentioning

confidence: 99%

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Monitoring Methodology Study of a Reservoir Built on the Karst Depression: A Large Scale Laboratory Simulation Test

Chen

Zheng

et al. 2023

ACS Omega

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The karst depression with a natural negative landform is favorable for reservoir construction with less excavation work. The underground air–water pressure would be complicated after the construction of a reservoir that blocks the natural air–water channel (sinkhole, karst channel, etc.). To develop a monitoring system for the reservoir, a large-scale laboratory simulation test was carried out to study the air-pressure evolution and water migration process during water table fluctuation after the blockage of the sinkhole in a karst depression. The results are as follows. (1) The positive pressure jacking effect and the negative pressure sucking effect were observed in the karst channel and inside the model during groundwater table fluctuation. (2) A water imbibition test on the rock-like material was carried out with layered resistivity and layered NMR measurement. The relationship of resistivity and water saturation was developed based on Archie’s equation. (3) The resistivity evolution during the test was monitored using the high-density electronic resistivity imaging method. The resistivity of the measured profile was sensitive to the variation of the water level, and the water migration process was quantified by the resistivity to water saturation conversion. (4) The suitability of many techniques for monitoring a reservoir built on the karst depression was discussed. The resistivity monitoring technique combined with the air–water pressure monitoring technique could provide useful information for safety and reliability assessment.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%