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The 3rd Badong International Geohazards Symposium (BIGS2021) will be held in Wuhan, Hubei Province, China, from November 26 to 28, 2021. Focusing on the theme of “Scientific Observation and Prevention of Reservoir Geohazards”, the symposium will be featured with 5 sessions, including science popularization education on geohazards prevention ...
Nov 25, 2023 · The mudrocks of the Middle Triassic Badong Formation are widely distributed in the Western Hubei Province and the eastern part of Chongqing and commonly referred to as red beds. These slide-prone strata are the source of the most developed geohazards in the TGA.
- Jinge Wang
- Introduction
- Geological Background of Zigui Basin and Its Periphery in The Three Gorges
- 3D Gravity Inversion Method
- Gravity Data and Preprocessing
- 3D Gravity Inversion Result
- Structural Characteristic Analysis
- Conclusion
- Data Availability Statement
- Author Contributions
- Funding
The Zigui Basin in the Three Gorges area is located in the thin–skinned structural zone of Chongqing City, Hunan and Hubei Province, with the Yangtze Plate to the south, the Qinling Orogenic Belt to the north, the Sichuan Basin in the west, and the Huangling Anticline in the east. The entire area is squeezed by the Qinling Mountains and Xuefeng Mou...
Zigui basin of the Three Gorges in Western Hubei is an important tectonic unit in the Yangtze River area. This area is a Mesozoic tectonic basin that developed and formed in the late Triassic and early Jurassic eras and is mainly composed of Jurassic continental facies and middle–upper Triassic coastal facies clastic rocks (Yu et al., 2017). As sho...
The algorithm adopted in this work is based on the 3D gravity inversion method developed originally by Li and Oldenburg (1996, 1998); Oldenburg (1974). With the addition of the Lagrange multiplier, prior geological and geophysical information can be processed during the inversion by Zhang et al. (2015). The algorithm effectively reduces the problem...
Figure 3 shows the Bouguer gravity anomaly in Badong-Zigui region and its adjacent area. The data were obtained from the China Geological Survey, with a scale of 1:200,000. As shown from the map, Badong and its adjacent areas are located on the Taihang–Wuling gravity gradient belt extending in an NNE direction. The Bouguer gravity is a negative ano...
The geometry of the inversion area is 170 km in both EW and NS directions, and the depth is 30 km. During the 3D constraint inversion, because the objective function Eq. 3 is an ill-posed problem, the larger the vector m, the more serious the non-uniqueness of inversion. Through a lot of experiments (Wang, 2020), we divided the inversion region int...
The inversion results indicate that the sedimentary strata at the Zigui Basin are mainly carbonated rocks with fine clastic rocks in low density. Since the first Three Gorges Reservoir impoundment in May 2003, a large number of moderate and small earthquakes, and micro-seismic activities have occurred in the headland area. Most micro–seismic activi...
In this study, the 3D density structure of the Three Gorges and adjacent areas was obtained using the Bouguer gravity anomaly with regional geological and geophysical data. The Zigui Basin, part of the Huangling Anticline, Shenlongjia Uplift, and other large geological structural units could be seen clearly in the inversion results. The sedimentary...
The raw data supporting the conclusion of this article will be made available by the authors, without undue reservation.
YW and JP conceived and designed the experiment; YW performed the computation; ZW and HY analyzed the data; YZ and JP interpreted the results; YW and JP discussed the results and polished the manuscript. YW and YZ wrote the paper and all the authors improved it.
This research was funded by the National Natural Science Fund of China (41931074, 41974096), the National Key Research and Development Project of China, Monitoring, Early Warning and Prevention of Major Natural Disasters (2018YFC1503503–01).
- Yunlong Wu, Junling Pei, Ze Wang, Yi Zhang, Huaqing Yuan
- 2021
Analysis of Reservoir Seismic Law Based on Three-Dimensional Morphological Characteristics of Joint Surface Related to Listric Fault. Since water storage, earthquakes occurred in Badong County, Hubei Province, accounted for as much as one-third of the strong earthquakes in the Three Gorges Reservoir area.
May 1, 2021 · To study the Huangtupo landslide, a field test facility, known as the Badong Field Test Station (BFTS), was constructed by the China University of Geosciences (Wuhan) from 2009 to 2012. The BFTS consists of a tunnel complex in the No.1 Linjiang landslide and a series of ground monitoring components ( Fig. 7 ; Tang et al., 2015a & Tang et al ...
- Wenping Gong, C. Hsein Juang, Janusz Wasowski
- 2021
Jun 1, 2022 · Abstract and Figures. We here report a high-resolution organic C-isotope record from terrestrial–marine transitional sediments of the Badong Formation in Luojiagou section, Zigui Basin of Hubei...
Name： Badong National Observation and Research Station of Geohazards China University of Geosciences. Address： 388 Lumo Road, Hongshan District, Wuhan, Hubei, P.R. China. Postcode： 430074....
