A5064314074- Geotechnical Engineering and Underground Structures
- Geophysical Methods and Applications
- Drilling and Well Engineering
- Geotechnical Engineering and Soil Mechanics
- Tunneling and Rock Mechanics
- Hydraulic Fracturing and Reservoir Analysis
- Geotechnical Engineering and Analysis
- Structural Integrity and Reliability Analysis
- Rock Mechanics and Modeling
- Non-Destructive Testing Techniques
- Genomics, phytochemicals, and oxidative stress
- Landslides and related hazards
- Fire effects on ecosystems
- Liver Disease Diagnosis and Treatment
- Robotic Path Planning Algorithms
- Vibration and Dynamic Analysis
- Mineral Processing and Grinding
- Cellular and Composite Structures
- Fatigue and fracture mechanics
- Advanced Fiber Optic Sensors
- Soil and Unsaturated Flow
- Seismic Waves and Analysis
- Manufacturing Process and Optimization
- Advanced Computational Techniques and Applications
- Cholesterol and Lipid Metabolism
Southeast University
2023-2024
North Sichuan Medical University
2024
Queen's University
2017-2024
Loughborough University
2024
University of Cambridge
2022-2023
Royal Military College of Canada
2019-2023
China University of Geosciences
2010-2015
Hubei Zhongshan Hospital
2013
Wuhan University
2013
National Taipei University of Technology
1993
Drilling mud (or drilling fluid) is a vital component in horizontal directional (HDD) crossing project, for which key function the removal of cuttings from borehole. The rheological properties mud, including flow index, consistency effective viscosity, and patterns, are briefly reviewed. A model behavior annular space thereby established, based upon transport mechanism analyzed. In this model, critical factors efficient considered to be return velocity surrounding drill rod within hole....
Although the structural response of pipelines has been studied in relation to different geohazards, few studies have focused on behaviour flexible pipeline joints. In this paper, a bell-and-spigot joint 600 mm dia. lined-corrugated high-density polyethylene (HDPE) pipe was investigated under differential ground movements imposed using facility that simulates normal fault. Two experiments were undertaken facility. first experiment, kinematic responses (i.e. axial, shear displacements and...
Corrugated steel pipe (CSP) culverts have been widely used for decades; however, their structural behavior under surface loading may not be correctly captured by design codes based on results from recent experimental studies. To address this, the data nine full-scale experiments investigating of corrugated with different burial depths and configurations, instrumented distributed fiber optic strain sensors, were compared three-dimensional finite-element analyses. Parametric studies undertaken...
Buried lined-corrugated high density polyethylene (HDPE) pipes have been applied to transport sewage for decades. During its service life, a pipe of this kind could suffer from differential ground motion as result various geohazards (e.g., settlement induced by tunneling, basement excavations, changes in water table). However, studies behavior thermoplastic sewers largely absent the research literature. A full-scale test was conducted investigate structural response 600-mm diameter HDPE...
Horizontal directional drilling (HDD) is now widely used for pipe installation by the trenchless industry. borehole stability under excessive mud pressure can be a concern during processes. The Delft equation has been applied to calculate maximum allowable pressure, but results are usually not safe. Meanwhile, little experimental evidence available in literature examine relationship between and different burial depths, or explain flow paths through soil up ground surface. Therefore, series...
Borehole stability during horizontal directional drilling is one of the most important issues affecting success pipe installations using this technique under roads, railways, and other obstructions. Two failure mechanisms, shear (blow-out) tensile fracture (hydrofracture), have previously been identified. Both mechanisms can be seen in saturated clay based on total stress analysis, dominates dry sand effective analysis. Numerical modeling was used to investigate these parametric studies were...
Two river crossing cases are considered in which a pipe is installed beneath the Yangtze River using horizontal directional drilling (HDD). In both cases, length of pipeline located on rock strata near north bank, including local protrusion, disrupted by erosion. A three-dimensional (3D) model developed to simulate erosion based finite-element software ABAQUS, capable modeling properties soil and pipelines, as well their interaction. Results presented an analysis stress concentration points...
The preparation and recycling of slurry is a very complicated crucial task in large Horizontal Directional Drilling (HDD) river-crossing project. This paper introduced the successful advanced experiences utilization management HDD projects China. Different property requirements different periods project are discussed. Research focused on system slurry, including filtration which returned from drill hole, how to add bentonite additives this filtrated slurry. can save amount additives....
Fresh mud (uncontaminated by soil or rock cuttings) plays important roles during borehole drilling, and its rheology has been studied for years in the oil gas drilling industry. However, properties those areas of application are different from used horizontal directional (HDD), one trenchless technologies pipe installation. Specialists usually follow their experience recommendations suppliers when preparing HDD because few documents have discussed fresh related with recipes. This paper...
Ground movement due to blow-out (unconfined shear failure) can develop when conducting pipe installation by horizontal directional drilling through sand, and this endanger pavements, sidewalks, other buried infrastructure. This paper presents compares the three methods used monitor ground movements in experiments conducted at Queen's University investigate borehole instability excessive mud pressures. Particle image velocimetry is a method widely displacements different geotechnical...
A pipeline soil box experiment is designed to research the response characteristics of interaction between underground and soil. It simulates installation, operation, rehabilitation, provides an effective guidance for theoretical study actual construction. This new modular testing system assembled by several walls which allow dimensions be easily changed. can also undertake a variety simulation experiments meet need multi-diameter changing size number end wall flange holes. In addition,...