Evaluating the effect of post-grouting on long bored pile based on ultra-weak fiber Bragg grating array DOI

Xing Zheng,

Bin Shi,

Mengya Sun

и другие.

Measurement, Год журнала: 2023, Номер 214, С. 112743 - 112743

Опубликована: Март 22, 2023

Язык: Английский

Revisiting spatiotemporal evolution process and mechanism of a giant reservoir landslide during weather extremes DOI
孝 河野, Hong‐Hu Zhu,

Feng-Nian Chang

и другие.

Engineering Geology, Год журнала: 2024, Номер 332, С. 107480 - 107480

Опубликована: Март 21, 2024

Язык: Английский

Процитировано

38

Clogging and Unclogging of Fine Particles in Porous Media: Micromechanical Insights From an Analog Pore System DOI Creative Commons
Yanzhou Yin, Yifei Cui, Lü Jing

и другие.

Water Resources Research, Год журнала: 2024, Номер 60(1)

Опубликована: Янв. 1, 2024

Abstract Pore clogging and unclogging in porous media are ubiquitous subsurface hydrologic processes, which have been studied extensively at various scales ranging from a single pore to porous‐medium samples. However, it remains unclear how fluid flow, particle rearrangement, the arching effect typical of cone‐shaped geometry interact they captured by pressure drop model macroscopic scale. Here, we investigate pore‐scale feedback mechanisms between flow using fully resolved fluid‐particle coupling approach (lattice Boltzmann method‐discrete element method). We first propose use truncated‐cone represent realistic geometries revealed X‐ray images prepared sand packing. Then, our simulations indicate that cone angle significantly influences associated with process enhancing contacts due arching. A modified Ergun equation is developed consider this geometric effect. At microscale, can be explained interparticle force statistics; few particles an arch (or dome) take majority hydrodynamic pressure. The maximum positively proportional Reynolds number negatively tangent angle. Finally, formula established utilizing characteristics compute maximal force. Our findings, especially accounts for resistance, provide guidance applying models large‐scale fines transportation issues, including seepage‐induced landslides, stream bank failure, groundwater recharge.

Язык: Английский

Процитировано

20

A method for monitoring of monopile horizontal displacement of offshore wind turbine based on UWFBG and boundary reconstruction DOI
Heming Han,

Zhihao Meng,

Bin Shi

и другие.

Measurement, Год журнала: 2025, Номер unknown, С. 117384 - 117384

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

4

Behaviour of pile-anchor reinforced landslides under varying water level, rainfall, and thrust load: Insight from physical modelling DOI
Chengtang Wang, Hao Wang,

Weimin Qin

и другие.

Engineering Geology, Год журнала: 2023, Номер 325, С. 107293 - 107293

Опубликована: Сен. 20, 2023

Язык: Английский

Процитировано

40

Thermo-hydro-poro-mechanical responses of a reservoir-induced landslide tracked by high-resolution fiber optic sensing nerves DOI Creative Commons
孝 河野, Hong‐Hu Zhu, Gang Cheng

и другие.

Journal of Rock Mechanics and Geotechnical Engineering, Год журнала: 2023, Номер 16(3), С. 1018 - 1032

Опубликована: Май 18, 2023

Thermo-poro-mechanical responses along sliding zone/surface have been extensively studied. However, it has not recognized that the potential contribution of other crucial engineering geological interfaces beyond slip surface to progressive failure. Here, we aim investigate subsurface multi-physics reservoir landslides under two extreme hydrologic conditions (i.e. wet and dry), particularly within masses. Based on ultra-weak fiber Bragg grating (UWFBG) technology, employ special-purpose optic sensing cables can be implanted into boreholes as "nerves Earth" collect data soil temperature, water content, pore pressure, strain. The Xinpu landslide in middle reach Three Gorges Reservoir Area China was selected a case study establish paradigm for situ thermo-hydro-poro-mechanical monitoring. These UWFBG-based were vertically buried 31 m-deep borehole at foot landslide, with resolution 1 m except pressure sensor. We reported field measurements covering period 2021 2022 produced spatiotemporal profiles throughout borehole. Results show years are more likely motivate motions than dry years. annual thermally active layer critical depth roughly 9 might move downward warmer dynamic groundwater table is located depths 9–15 m, where peaked strain undergoes periodical response leap withdrawal hydrometeorological cycles. interface behaviors may support interpretation regulation slope stability, allowing us correlate them local damage events global destabilization. This paper also offers natural framework interpreting signatures from creeping bank slopes, which form basis monitoring early warning system.

Язык: Английский

Процитировано

35

Probing multi-physical process and deformation mechanism of a large-scale landslide using integrated dual-source monitoring DOI Creative Commons
Hong‐Hu Zhu, 孝 河野, Huafu Pei

и другие.

Geoscience Frontiers, Год журнала: 2023, Номер 15(2), С. 101773 - 101773

Опубликована: Дек. 20, 2023

The implementation of isolated heterologous monitoring systems for spatially distant borehole deployments often comes with substantial equipment costs, which can limit the effectiveness geohazard mitigation and georisk management efforts. To address this, we have developed a novel system that integrates fiber Bragg grating (FBG) microelectromechanical (MEMS) techniques to capture soil moisture, temperature, sliding resistance, strain, surface tilt, deep-seated inclination. This enables real-time, simultaneous data acquisition cross-validation analyses, offering cost-effective solution critical parameters in geohazard-prone areas. We successfully applied this integrated Xinpu landslide, an active super-large landslide located Three Gorges Reservoir Area (TGRA) China. resulting strain profile confirmed presence two shallow secondary surfaces at depths approximately 7 m 12 m, respectively, addition depth ∼28 m. lower was activated by extreme precipitation, while upper one primarily driven significant changes reservoir water levels secondarily triggered concentrated rainfalls. Anti-slide piles remarkably reinforced moving masses but failed control ones. gap between pile heads amplified rainwater erosion effect, creating preferential channel infiltration. Multi-physical measurements revealed mixture seepage-driven buoyancy-driven behaviors within landslide. study offers dual-source multi-physical paradigm collaborative multiple crucial boreholes on large-scale contributes evaluation improvement engineering measures similar geological settings.

Язык: Английский

Процитировано

20

Shear strain prediction of reservoir landslide based on FBG monitoring and bagging-MLP algorithm DOI
Jia Wang, Hong‐Hu Zhu, 孝 河野

и другие.

Bulletin of Engineering Geology and the Environment, Год журнала: 2025, Номер 84(2)

Опубликована: Янв. 21, 2025

Язык: Английский

Процитировано

1

Numerical Analysis of Anti-Slide Pile Reinforcement for Slope Stability Under Rainfall Conditions DOI Creative Commons

Zhongyi Wen,

Weiyuan Xu,

Bingxiang Yuan

и другие.

Buildings, Год журнала: 2025, Номер 15(4), С. 638 - 638

Опубликована: Фев. 19, 2025

Rainfall-induced slope instability is a critical challenge in geotechnical engineering. This study investigates the reinforcement effect of anti-slide piles on stability under rainfall conditions using finite element numerical simulations, based project Youxi County, Fujian Province. The MIDAS GTS NX 2019(v1.2) software was employed to analyze effects pile arrangements safety factors, pore water pressure, displacement fields, and effectiveness. results showed that significantly enhanced by mitigating adverse rainfall, such as an increased pressure reduced soil strength. optimal achieved when were positioned middle sections slope, horizontal x-direction from 74.49 mm (without reinforcement) 7.42 mm, achieving reduction 90.0%, effectively reducing plastic strain zones. provides valuable insights into interaction mechanisms between soil, offering practical guidance for design strategies mitigate rainfall-induced failures.

Язык: Английский

Процитировано

1

Performance evaluation of distributed strain sensing nerves for monitoring ground collapse: A laboratory study DOI
Yuxin Gao, Hong‐Hu Zhu,

Chao Wei

и другие.

Measurement, Год журнала: 2023, Номер 217, С. 113100 - 113100

Опубликована: Май 24, 2023

Язык: Английский

Процитировано

13

Hybrid response surface method for system reliability analysis of pile-reinforced slopes DOI Creative Commons
Xiangrui Duan, Jie Zhang, Leilei Liu

и другие.

Journal of Rock Mechanics and Geotechnical Engineering, Год журнала: 2024, Номер 16(9), С. 3395 - 3406

Опубликована: Март 19, 2024

To consider the complex soil-structure interaction in a pile-slope system, it is necessary to analyze performance of systems based on three-dimensional (3D) numerical model. Reliability analysis system 3D modeling very challenging because computationally expensive and function pile failure mode only defined safe domain soil stability. In this paper, an efficient hybrid response surface method suggested study reliability pile-reinforced slopes, where support vector machine Kriging model are used approximate functions failure, respectively. The versatility illustrated detail with example. For example examined found that can significantly contribute reinforcement ratio effectively reduce probability failure. There exists critical beyond which not sensitive ratio. spacing affects both probabilities slope. optimal location length for stabilizing piles.

Язык: Английский

Процитировано

5