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Application of a comprehensive geophysical exploration methods to water exploration in magmatic rock mountainous areas with water shortage in Jiaodong Peninsula |
LIU Chun-Wei1,2( ), WANG Chong1,2, HU Cai-Ping1,2, SHI Yan-Fang1,2( ), YANG Xiao-Hui1,2, LIU Xiao-Tian1,2, HAN Yu-Ying1,2, LI Bo1,2 |
1. No.801 Institute of Hydrogeology and Engineering Geology, Shandong Provincial Bureau of Geology & Mineral Resources, Jinan 250014, China 2. Shandong Engineering Research Center for Environmental Protection and Remediation on Groundwater, Jinan 250014, China |
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Abstract Magmatic rock areas suffer poor water yield property and lack groundwater overall, encounter great difficulties with water exploration, and generally face the problem that available water resources fail to meet the demand. Targeting different types of water exploration targets and combining the geological and physical property characteristics, hydrogeological conditions, and field survey of the exploration target areas, this study comprehensively analyzed the electric structure characteristics, well completion modes, and water yield mechanisms of the strata around Xiaoshuicha and Wawu villages in Laiyang City through interpretation and analysis using comprehensive geophysical exploration method consisting of apparent resistivity profiles and apparent resistivity-based vertical sounding. After determining water exploration targets, conducting interpretation and analysis of geophysical prospecting, and locating wells through comprehensive analysis, this study successfully drilled two wells in the two villages, obtaining maximum water yield of 247.56 m3/d and 620.64 m3/d each. Finally, this study analyzed the water yield mechanisms in detail based on the intrusion-contact zone types and water-storage structural models with dykes conducting water. This study not only solves the difficulty with water use of local people but also provides a certain reference for future water exploration and well locating in similar areas.
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Received: 02 August 2022
Published: 27 April 2023
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Hydrogeological map of the study area
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地层代号 | 含水层 岩性 | 电阻率变化 范围/(Ω·m) | 电阻率平均 值/(Ω·m) | 自然伽 马/API | Qhl、Qhy | 黏土 | 0.1~10 | 5 | 100~200 | Qhl、Qhy | 砂 | 15~80 | 40 | 50~150 | Ar3 | 花岗岩 | 209~1131 | 540 | 100~1000 | Ar3 | 闪长岩 | 198~1324 | 603 | 100~1000 |
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Petrophysical parameters of main strata in the study area
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截止高度角15° 以上卫星个数 | PDOP 值 | 与基准站 的距离/km | 图上点位 中误差/mm | 高程中 误差/mm | >5 | ≤6 | <5 | ≤0.5 | ≤1/3等高距 |
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Technical specifications and parameters
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Deployment of geophysical prospecting in Xiaoshuicha Village
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Comprehensive section of L1 line of Xiaoshuicha Village
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Interpretation model of IP sounding inversion at 410 m of L1 line
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Comprehensive chart of HTDZK01 borehole in Xiaoshuicha Village, Laiyang City
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Hydrogeological section of HTDZK01 borehole
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Deployment of geophysical prospecting in Wawu Village
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Comprehensive section of L2 Line in Wawu Village
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Comprehensive chart of HTDZK06 Drilling hole, Wawu Village, Laiyang City
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Hydrogeological section of HTDZK06 borehole
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