A5044204976- Geotechnical Engineering and Analysis
- Civil and Geotechnical Engineering Research
- Grouting, Rheology, and Soil Mechanics
- Geotechnical Engineering and Underground Structures
- Geomechanics and Mining Engineering
- Infrastructure Maintenance and Monitoring
- Asphalt Pavement Performance Evaluation
- Tunneling and Rock Mechanics
- Landslides and related hazards
- Geoscience and Mining Technology
- Geotechnical Engineering and Soil Stabilization
- Technology and Security Systems
- Climate change and permafrost
- Agricultural Science and Fertilization
- Geotechnical Engineering and Soil Mechanics
- Plant Ecology and Soil Science
- Anomaly Detection Techniques and Applications
- Tribology and Wear Analysis
- Polymer composites and self-healing
- Belt Conveyor Systems Engineering
- Plant responses to water stress
- Polymer Nanocomposites and Properties
- Fault Detection and Control Systems
- Mineral Processing and Grinding
- Plant Micronutrient Interactions and Effects
Shanxi Transportation Research Institute
2013-2024
Chang'an University
2021-2022
Ministry of Transport
2013-2021
Chongqing Jiaotong University
2012
Coal tar bearing emulsions were used in the Netherlands as binder anti-skid surfaces for runways because of their perfect adhesion and fuel resistance properties. They are however toxic will not be allowed anymore after 2010. Therefore alternatives need to developed. As one alternatives, two types two-component epoxy modified bitumen have been investigated by means direct tensile tests (DTT), relaxation (RT) dynamic shear rheometer (DSR) tests. The effect curing temperature on strength...
Based on the analysis of monitoring data in construction Linwu Tunnel and numerical simulation sequences by software Ansys, paper calculated values ground settlement vault program step method excavation; analyzed influences between excavation settlement, as well settlement. It is feasible to use areas V-class surrounding rocks Tunnels with large cross section small interval, which offers great reference value other similar projects.
The deformation mode of loess surrounding rock anchor under the action pull‐out load and shear stress distribution law interface condition different lengths are studied by using laboratory self‐made model test chamber micro pullout instrument. A total three tests carried out for selected anchor. Three modes obtained according to results. It is proposed that maximum appears in section 25 times diameter from head, middle rear part body can only be brought into full play when length‐to‐diameter...
Through engineering example and using the FEM software GTS, water-rich loess tunnel excavation is analyzed without or with grouting-reinforcement effect different permeability coefficient of structure.Influence flow field characteristics displacement caused by variation structure in ordinary water level was analyzed.The results show that play an important seepage path, pore pressure velocity.It also influence surrounding rock.Designs should consider impact seepage-stress coupling...
Most of the widely used Automatic Incident Detection (AID) methods are based on basic principle California Algorithms which detects incidents by comparing difference macro traffic parameters between upstream and downstream. However, these AID algorithms cannot perform well under low-volume condition due to many don't cause significant changes conditions. To improve incident detection condition, paper proposes a new method Vehicle Identification (AVI) technique using high-resolution cameras....
Copper was one of common soil contaminants in China. In order to research the stress mechanism copper wheat, structure subcellular mesophyll cell were studied at different concentration and growth stage natural conditions. The results showed that 1) tillering stage, under level L4 (900 mg/kg), comparing control, structures not intact. number chloroplast increased. volume enlarged. arrangement thylakoids disorder. 2) At jointing membrane concentrations (L4) ruptured, thylakoid spilled from...
To investigate the stress mechanism of zinc on wheat, different concentrations were used to treat and ultrastructure mesophyll cells wheat was observed by transmission electron microscope (TEM). The results showed that at tillering stage, number chloroplast decreased, thylakoid cell disorder L4 (1,000 mg/kg). At jointing volume expanded mature under low L1 (250 mg/kg), some disappeared or broke, mitochondrion increased, wall damaged; seriously fractured, structure not intact, decreased...
In order to solve the problem of water-rich loess tunnel in construction process, paper based on idea underground water environmental balance, use Kuniaki Sato empirical formula and runoff modulus build correlation function, get permeability coefficient.Then we combine engineering practice condition Qiaoyuan tunnel, duplex pipe grouting reinforce evaluate effect.Results show that there are a great lot obvious veins face, bedding is clear.There not bleeding phenomenon face.The surrounding...
In this paper, field measurement is used to obtain the force of system anchor in its actual working condition and stress situation anchors different parts loess tunnel analyzed based on test results, indicating reasons why values measured axial are tunnel. Based displacement solution Mindlin problem, paper deduces analytical distribution sidewall under pull-out force, analyzes forms influencing factors shear force. At same time, solutions surrounding rock plastic zone radius tentatively...
Currently, advanced support technology of leading pipe -shed is often used in the excavation portal section, but design parameters and structure haven't yet form a unified standard.The author analyzes its force theory parameters.Combined with effects support, paper raises several issues for further research, taking role scaffolding into account.
Due to the lack of theoretical basis for design inverted arch, arch many tunnels is not reasonable, and problem more prominent in shallow buried tunnel.By analyzing relationship between soft foundation stability tunnel structure, method determining load presented.With construction technology mechanical model three-hinged established, formula calculating reasonable axis internal force calculation are given.The procedure presented, idea dynamic introduced into arch.