Search Results - "Sun, Huaifeng"

A multi-geophysical approach to assess potential sinkholes in an urban area by Liu, Rui, Sun, Huaifeng, Qin, Jianwen, Zheng, Ziqiang

“…Sinkholes caused by natural or anthropogenic factors pose as potential safety hazards in urban areas. From April to May 2019, six consecutive ground collapses…”
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An overview of ahead geological prospecting in tunneling by Li, Shucai, Liu, Bin, Xu, Xinji, Nie, Lichao, Liu, Zhengyu, Song, Jie, Sun, Huaifeng, Chen, Lei, Fan, Kerui

“…•The levels, features, applicability and limitations of proposed techniques.•Key problems and solutions on ahead prospecting in complicated…”
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Characteristic analysis and optimal survey area definition for semi-airborne transient electromagnetics by Chen, Chengdong, Sun, Huaifeng

“…Semi-airborne transient electromagnetics (SATEM) is a versatile tool in quick geophysical surveys at a low cost. This method usually uses a grounded-wire…”
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Denoising land-based controlled-source electromagnetic data based on a same-site noise reference channel by Yang, Yang, Zhang, Heng, Zhu, Yuzhen, Zhou, Changyu, Sun, Huaifeng

“…SUMMARY The applications of land-based controlled-source electromagnetic (CSEM) exploration are severely limited by strong noise interferences, particularly in…”
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GPR-TransUNet: An improved TransUNet based on self-attention mechanism for ground penetrating radar inversion by Junkai, Ge, Huaifeng, Sun, Wei, Shao, Dong, Liu, Yuhong, Yao, Yi, Zhang, Rui, Liu, Shangbin, Liu

“…Convolutional Neural Networks (CNN) are widely applied to Ground Penetrating Radar (GPR) inversion because they have strong data-driven capabilities and are…”
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Improved adaptive regularization for simulated annealing inversion of transient electromagnetic by Tang, Xiang, Liu, Shangbin, Nian, Xiaofei, Deng, Shengqiang, Liu, Yuchao, Ye, Qiongyao, Li, Yingjie, Li, Yangyi, Yuan, Tong, Sun, Huaifeng

“…Geophysical inversion usually involves ill-posed problem. Regularization is the most commonly used method to mitigate this problem. There are many…”
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Motion noise remove for secondary-field semi-airborne transient electromagnetic data by Sun, Huaifeng, Chen, Chengdong, Yang, Yang, Lan, Riyan, Deng, Shengqiang, Li, Dunren

“…Semi-airborne Transient Electromagnetics (SATEM) is a low-cost and productive method for quick geophysical surveys. The system includes a grounded line source…”
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Comprehensive surface geophysical investigation of karst caves ahead of the tunnel face: A case study in the Xiaoheyan section of the water supply project from Songhua River, Jilin, China by Bin, Liu, Zhengyu, Liu, Shucai, Li, Lichao, Nie, Maoxin, Su, Huaifeng, Sun, Kerui, Fan, Xinxin, Zhang, Yonghao, Pang

“…This paper describes the application of a comprehensive surface geophysical investigation of underground karst systems ahead of the tunnel face in the…”
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Detection of karst caves during tunnel construction using ground‐penetrating radar and advanced drilling: A case study in Guangxi Province, China by Lan, Riyan, Liu, Zonghui, Liu, Maomao, Guan, Qiyu, Yan, Yuanfang, Sun, Huaifeng, Zhou, Dong

“…ABSTRACT In karst topography, hidden caves or underground rivers may imperil the safety of tunnels. It is critical to accurately detect the location and…”
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Bayesian Markov Chain Monte Carlo inversion of surface-based transient electromagnetic data by Deng, Shengqiang, Zhang, Nuoya, Kuang, Bo, Li, Yaohua, Sun, Huaifeng

“…Conventional linearized deterministic inversions of transient electromagnetic (TEM) data inherently simplify the non-uniqueness and ill-posed nature of the…”
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Characterization of shallow karst using electrical resistivity imaging in a limestone mining area by Sun, Huaifeng, Cheng, Ming, Su, Chuanxi, Li, Haiyan, Zhao, Guodong, Su, Maoxin, Li, Shucai, Zhang, Bo, Zhang, Lewen, Li, Kai

“…The Guangxi area is famous for its high degree of karstification due to a long period of groundwater erosion and the development of fracture networks. Karst…”
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Comprehensive Geophysical Investigation and Analysis of Lining Leakage for Water-Rich Rock Tunnels: A Case Study of Kaiyuan Tunnel, Jinan, China by Lin, Chunjin, Wang, Xintong, Nie, Lichao, Sun, Huaifeng, Xu, Zhenhao, Du, Yuchao, Liu, Lang

“…Leakage of lining structure is one of the main geological disasters of the tunnel, which brings heavy economic losses and casualties. Aiming at the problem of…”
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Multi-component and multi-array TEM detection in karst tunnels by Sun, Huaifeng, Li, Xiu, Li, Shucai, Qi, Zhipeng, Su, Maoxin, Xue, Yiguo

“…Emerging applications of transient electromagnetic methods (TEM) in tunnelling require higher resolution on the distributions and shapes of low resistivity…”
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Denoising CSEM Data Using Least-Squares Method Based on Mixed Basis of Fourier Series and Legendre Polynomials by Yang, Yang, Zhou, Changyu, Zhang, Heng, Peng, Yonghui, Sun, Huaifeng

“…Controlled-source electromagnetic (CSEM) surveys are widely used, but due to the influence of instrumental or environmental factors, the data obtained from…”
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De-noising CSEM data using least-squares method based on mixed basis of Fourier series and Legendre polynomials by Yang, Yang, Zhou, Changyu, Zhang, Heng, Peng, Yonghui, Sun, Huaifeng

“…Controlled-source electromagnetic (CSEM) surveys are widely used, but due to the influence of instrumental or environmental factors, the data obtained from…”
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The first semi-airborne transient electromagnetic survey for tunnel investigation in very complex terrain areas by Sun, Huaifeng, Zhang, Nuoya, Li, Dunren, Liu, Shangbin, Ye, Qiongyao

“…[Display omitted] •This is the first SATEM survey for tunnel investigation in very complex terrain areas.•SATEM results can accurately delineate the hidden…”
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A novel envelope algorithm for estimating and evaluating noise effect in stationary controlled-source electromagnetic data by Zhou, Changyu, Yang, Yang, Zhang, Heng, Wang, Jinhai, Sun, Huaifeng

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Wavelet-GAN: A GPR Noise and Clutter Removal Method Based on Small Real Datasets by Ge, Junkai, Sun, Huaifeng, Shao, Wei, Liu, Dong, Liu, Hongbo, Zhao, Faqiang, Tian, Bo, Liu, Shangbin

“…In ground-penetrating radar (GPR) data, clutter and noise are commonly observed in B-scan images, which can seriously affect the interpretability of the GPR…”
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A Fast and Efficient Method for 3-D Transient Electromagnetic Modeling Considering IP Effect by Zhao, Qi, Sun, Huaifeng, Liu, Shangbin, Lu, Xushan, Bai, Xixian, Zheng, Ziqiang

“…Late-time negative responses in central-loop transient electromagnetic (TEM) data are often linked to the induced polarization (IP) effect. Early methods for…”
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Scanning for water hazard threats with sequential water releasing tests in underground coal mines by Liu, Zaibin, Zhao, Ruijue, Dong, Shuning, Wang, Wenke, Sun, Huaifeng, Mao, Deqiang

“…Water hazards threat the safety of underground mining. A detailed characterization of hydraulic parameters is helpful for the design of engineering projects to…”
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