A5100392799- Grouting, Rheology, and Soil Mechanics
- Geotechnical Engineering and Analysis
- Innovative concrete reinforcement materials
- Geotechnical Engineering and Underground Structures
- Structural Behavior of Reinforced Concrete
- Particle accelerators and beam dynamics
- Magnetic confinement fusion research
- Asphalt Pavement Performance Evaluation
- Internet Traffic Analysis and Secure E-voting
- Dam Engineering and Safety
- Environmental and Agricultural Sciences
- Rangeland and Wildlife Management
- Fire effects on ecosystems
- Microbial Applications in Construction Materials
- Remote Sensing and Land Use
- Concrete Properties and Behavior
- Fusion materials and technologies
- Tree Root and Stability Studies
- Forest, Soil, and Plant Ecology in China
- Calcium Carbonate Crystallization and Inhibition
- Forest Insect Ecology and Management
- Smart Materials for Construction
- Vibration Control and Rheological Fluids
- Seismic Performance and Analysis
- Hydraulic flow and structures
Chongqing Jiaotong University
2021-2025
Chongqing University of Science and Technology
2022-2025
University of Electronic Science and Technology of China
2024
China West Normal University
2023
Chinese Academy of Sciences
2017-2022
Xihua University
2022
Massachusetts Institute of Technology
2022
Guizhou University of Finance and Economics
2021
Institute of Zoology
2020
China University of Geosciences (Beijing)
2019
To investigate the diffusion law of ultrafine cement slurry (UCS) with different water–cement ratios in tunnel second lining cracks during grouting, grouting was carried out by experimental and theoretical analysis methods this study. Through collection data experiment time history, morphological characteristics based on viscosities were obtained, which divided into three patterns: circular zone, excessive elliptical zone. Furthermore, spatiotemporal variation rules radius secondary obtained...
In the 2016 EAST experimental campaign, a steady-state long-pulse H-mode discharge with an ITER-like tungsten divertor lasting longer than one minute has been obtained using only RF heating and current drive, through integrated control of wall conditioning, plasma configuration, heat flux, particle exhaust, impurity management, effective coupling multiple drive sources at high injected power. The (Ip ∼ 0.45 MA) was fully-noninductively driven (Vloop < 0.0 V) by combination ∼2.5 MW LHW, ∼0.4...
Crystal blockage in highway tunnel drainage systems often leads to a higher groundwater level behind the lining, leading lining cracking and leakage. The system mainly consists of circumferential, longitudinal, transverse pipes, as well construction joint waterstops. Most studies have carried out macro-experimental analysis on crystal systems, but few been done at micro-level. In this paper, micro-laws between typical materials CaCO3 crystals different temperatures were analyzed by molecular...
Abstract A recent EAST experiment has successfully demonstrated long pulse steady-state high plasma performance scenario and core-edge integration since the last IAEA in 2018. discharge with a duration over 60 s β P ∼ 2.0, N 1.6, H 98y2 1.3 an internal transport barrier on electron temperature channel is obtained multi-RF power heating current drive. higher ( 1.8, p 1.3, n e / GW 0.75) of 20 achieved by using modulated neutral beam power, where several normalized parameters are close or even...
The aim of this study was to investigate the effect different mix ratios on mechanical properties steel fiber-reinforced concrete (LSFRC) and determine an optimum ratio. effects four factors, namely, fly ash content, volume fraction fibers, water–cement ratio, sand rate, LSFRC were investigated through orthogonal experiments. microstructure at analyzed using scanning electron microscopy (SEM), optimal ratio derived. results showed that fibers main factors affecting LSFRC. When 0.38 0.42,...
A-level scenic spots are a unique evaluation form of tourist attractions in China, which have an important impact on regional tourism development. Guizhou is key province China. In recent years, the number Province has been increasing, and economy improved rapidly. The spatial distribution evolution characteristics influencing factors from 2005 to 2019 were measured using data analysis methods, trend geographical detector methods. results elaborated that all counties increased, while south...
The crystalline blockage of tunnel drainage pipes in a karst area seriously affects the normal operation system and buries hidden dangers for tunnel. In order to obtain influencing factors laws pipe crystallization area, based on field investigation plugging, effects groundwater velocity, diameter, material, structure law are studied by indoor model test. results show that: (1) With increase diameter (20–32 mm), crystallinity first increases then decreases. (2) water velocity (22.0–63.5...
In the water-rich karst regions, high water and mud outbursts are common geological disasters in tunnel construction. To ensure safe smooth construction of projects, it is necessary to consider anti-water pressure, inrush prevention during design tunnels. Based on Yongfutun Tunnel Project, this paper studies application effect radial grouting curtain grouting, which involves those high-water-pressure tunnels under double-layer support conditions. obtain effects parameters influences...
The corrosion reactions in concrete materials subjected to external environment attack can lead the deterioration of concrete. However, effects internal fluctuations on reaction process have not been reported current studies damage materials. To comprehensively describe fluctuations, stochastic dynamic model sulfate is established based law mass conservation and random theory, which parameters chemical system are, respectively, regarded as colored Gaussian noises a series variables. An...
Crystalline pipe plugging of the tunnel drainage system was one causes lining cracking and water leakage. Effective prevention crystalline very important to ensure safety stability structure during operation. Using methods field investigation, indoor model test numerical simulation, a new flocking anti crystallization blocking technology proposed. The law anti-crystallization efficiency flocked at different flow rates, three-dimensional distribution characteristics crystal were studied....
To promote practical use of the top-and-bottom layered steel fiber reinforced concrete (LSFRC) plates, an appropriate constitutive model is selected using ABAQUS software to analyze bearing capacity, failure pattern, and deformation LSFRC plates. An plate established for analysis calculation. Meanwhile, a test was carried out measure capacity 10 The results show that, after going through elastic stage, crack growth, when maximum width reaches 0.1 mm, load plates can be used as ultimate load....
In recent years, there has been over two million hm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> of Eucalyptus tress to be planted in Mainland China, and Hainan is one the most important areas. plantation yields substantial profits, while a series relevant ecological problems have become topics academic arguments. The annual rainfall about 1000 mm west southwest Hainan, drought severity index 2. With progressing eucalyptus pulp...
The use of biopolymers to tackle geotechnical problems is an essential step toward the development sustainable systems. strength and erosion resistance biopolymer-treated Hot Coffee soil sampled from bridge site in Jackson, Mississippi were examined this research. optimum biopolymer concentration moisture content tested for Agar Gum, Xanthan Guar Gum treatment soil, respectively. mechanical behavior samples evaluated through unconfined compressive test, splitting tensile triaxial pocket...
Prompt engineering has demonstrated remarkable success in enhancing the performance of large language models (LLMs) across diverse tasks. However, most existing prompt optimization methods only focus on task-level performance, overlooking importance query-preferred prompts, which leads to suboptimal performances. Additionally, these rely heavily frequent interactions with LLMs obtain feedback for guiding process, incurring substantial redundant interaction costs. In this paper, we introduce...
When constructing tunnels in mountainous areas, the drilling and blasting method is most commonly used because of its economy. Ordinary reinforced concrete itself has defects such as poor crack resistance brittleness. Therefore, when using for ordinary double-line tunnels, vibration phenomena will occur cause cracks first-line which have adverse effects on durability safety tunnel. As a response, scholars proposed use steel fiber-reinforced tunnel lining. In this paper, LS-DYNA software to...
Fire is a common natural disturbance in forest ecosystems and plays an important role subsequent vegetation patterns. Based on the spatial sequence method instead of time successional method, this study selected burned areas different locations Anning River Basin, which contains typical dry valleys. Quadrat surveys quantitative classification were used to identify classification, distribution pattern, environmental interpretation during restoration process after fire. The results showed...
This paper presents a new hybrid isolator technique that composes of passive vibration device and active actuator. It contains the advantages both isolation system. During optimization design, as cylindrical rubber is designed, then actuator designed electromagnetic with compact construction larger forces. After manufacturing prototype control experiment carried out, which can verify isolator's performance. mono-layer experiment, upper layer mass reduced about 29dB~40dB. In two-stage it has...