Article
Environmental Sciences
Zeming Tian, Hongdong Fan, Fei Cao, Long He
Summary: This study proposes an adaptive method called Adp-HTCI to select homogeneous pixels, which balances efficiency and accuracy. After selecting homogeneous pixels, the covariance matrix's eigenvalue decomposition is used to optimize their phase and perform temporal processing. Experimental results show that the Adp-HTCI algorithm increases the number of selected homogeneous pixels while ensuring selection accuracy, thereby improving the estimation accuracy and reliability of subsequent parameter solving.
Article
Computer Science, Information Systems
Xiaobing Liu, Jilei Huang
Summary: This study utilizes SAR satellite images to acquire information on fine surface three-dimensional deformation in a goaf, proposes an improved three-dimensional decomposition model, and verifies the accuracy and feasibility of the method through a case study.
Article
Engineering, Geological
Ali Saeidi, Olivier Deck, Mahdiyeh Seifaddini, Marwan A. L. Heib, Thierry Verdel
Summary: This paper proposes a methodology for adjusting the Influence Function Method (IFM) to each mining site, showing the dependence of maximum subsidence on the Width/Height and Length/Width ratios of mine panel. It also highlights the significant influence of the angle of each mine panel on subsidence prediction, emphasizing the need for appropriate adjustments for different mining regions.
GEORISK-ASSESSMENT AND MANAGEMENT OF RISK FOR ENGINEERED SYSTEMS AND GEOHAZARDS
(2022)
Article
Computer Science, Information Systems
Wentao Zhou, Wenjun Zhang, Xinchun Yang, Weiqiang Wu
Summary: An improved fusion method was proposed in this study to monitor the three-dimensional deformation in a mined-out area, with results showing accurate measurement of mining subsidence patterns and providing more precise deformation measurement results.
Article
Environmental Sciences
Hongdong Fan, Youfeng Liu, Yaozong Xu, Honglei Yang
Summary: A new algorithm named dynamic hypothesis test of confidence interval (D-HTCI) is proposed in this paper to reduce the wrong selection rate of statistically homogeneous pixels (SHP) and increase the number of SHP selections. By applying an adaptive spatial nonlocal filtering method for phase optimization, the optimization quality is significantly improved compared to traditional methods, as shown by the phase standard deviation (PSD) and the sum of phase differences (SPD).
GEOCARTO INTERNATIONAL
(2022)
Article
Environmental Sciences
Gang Zhao, Liuyu Wang, Kazhong Deng, Maomei Wang, Yi Xu, Meinan Zheng, Qing Luo
Summary: The study proposes an adaptive CCW selection method based on deformation gradients and image noises to improve the accuracy of the offset-tracking method in mining deformation monitoring.
Article
Environmental Sciences
Yang Chen, Shengwen Yu, Qiuxiang Tao, Guolin Liu, Luyao Wang, Fengyun Wang
Summary: InSAR was used to monitor surface subsidence in a mining area in Shandong Province, China. While InSAR can accurately detect the location, range, and spatial change trend of subsidence, it has limitations in detecting the subsidence center and areas with high displacement rates. By establishing a correction model based on the distance from leveling points to the subsidence center, more accurate monitoring results consistent with the actual situation were obtained.
Article
Environmental Sciences
Bowen Chi, Hongdong Fan, Yantao Gao, Lifeng Zhao, Huifu Zhuang
Summary: The proposed method introduces an iterative adaptive window approach for extracting SHP, effectively protecting and restoring deformation phase, and holding great promise for mining subsidence monitoring.
GEOCARTO INTERNATIONAL
(2022)
Review
Computer Science, Information Systems
Bailin Hu, Lei Chen, Youfeng Zou, Xuexiao Wu, Prosper Washaya
Summary: Ground subsidence caused by coal mining can cause serious damage to the ecological environment system and economic and social development. The use of SAR image interferometry technology for monitoring coal mining subsidence is common, but monitoring fast and large subsidence remains a challenge. Scholars have developed different methods to address this issue, such as combining InSAR with prediction models and using offset tracking technology with SAR image amplitude information.
Article
Environmental Sciences
Zhihong Wang, Huayang Dai, Yueguan Yan, Jibo Liu, Jintong Ren
Summary: A three-dimensional deformation monitoring method based on single line-of-sight interferometric synthetic aperture radar technology is proposed to obtain detailed and accurate deformation information of a subsidence basin. By combining InSAR with the surface displacement vector depression angle model, this method can achieve more precise monitoring and better consistency with actual situations compared to traditional InSAR and PIM methods.
Article
Environmental Sciences
Bingqian Chen, Han Mei, Zhenhong Li, Zhengshuai Wang, Yang Yu, Hao Yu
Summary: The combination of SAR pixel offset tracking (OT) and an improved mining subsidence model allows for monitoring of three-dimensional large surface displacements in mining areas effectively.
Article
Computer Science, Interdisciplinary Applications
Minyun Liu, Yugao Ma, Xiaoyu Guo, Shichang Liu, Guodong Liu, Shanfang Huang, Kan Wang
Summary: This paper introduces an improved tracking method called hybrid-tracking, which enhances the computational efficiency of particle transport Monte Carlo simulations. By integrating the advantages of ray-tracing and Delta-tracking methods, hybrid-tracking extends the application range of the TMS method and significantly improves efficiency.
JOURNAL OF COMPUTATIONAL PHYSICS
(2021)
Article
Engineering, Geological
Olga Kharisova, Timur Kharisov
Summary: This paper describes a case of ground surface collapse above an active chromite ore underground mine that had been operating for over eighty years. The analysis revealed a complex deformation process with subsidence and uplift cycles. The subsiding area gradually increased in size over several years leading up to the collapse. However, insufficient data due to monitoring points being lost within the sinkhole area hindered estimation of the subsidence preceding the failure.
ENGINEERING GEOLOGY
(2021)
Article
Environmental Sciences
Kai Sun, Jixiong Zhang, Manchao He, Meng Li, Shijie Guo
Summary: This study proposes three different backfilling methods to minimize surface subsidence in caving mining. The optimal backfilling material ratio is determined through testing, and numerical simulation shows that all three methods effectively reduce roof deformation. The surface subsidence is scientifically evaluated and found to be below the minimum value required by regulation, confirming the integrity of surface infrastructures ensured by backfilling mining.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Optics
Mingyang Ni, Yu Cai, Huaxia Deng, Xinglong Gong
Summary: This paper presents a method for directly reconstructing target features using single-pixel imaging, which can achieve lens-flare-free imaging without the need for image postprocessing. By utilizing a novel sampling strategy and Fourier single-pixel imaging methods, specific features can be captured at an ultra-low sampling ratio.
OPTICS AND LASERS IN ENGINEERING
(2023)
