A5036231595- Geotechnical Engineering and Analysis
- Geotechnical Engineering and Underground Structures
- Rock Mechanics and Modeling
- Civil and Geotechnical Engineering Research
- Geotechnical Engineering and Soil Stabilization
- Landslides and related hazards
- Grouting, Rheology, and Soil Mechanics
- Railway Engineering and Dynamics
- Dam Engineering and Safety
- Seismic Imaging and Inversion Techniques
- Geotechnical Engineering and Soil Mechanics
- Electromagnetic Simulation and Numerical Methods
- Advanced Numerical Methods in Computational Mathematics
- Tailings Management and Properties
- Underground infrastructure and sustainability
- Scheduling and Optimization Algorithms
- Resource-Constrained Project Scheduling
- Scheduling and Timetabling Solutions
- Numerical methods in engineering
- Geotechnical and Geomechanical Engineering
China Academy of Railway Sciences
2019-2023
Purpose Constructing subway stations near existing buildings is a complex engineering challenge. To identify high-risk factors and guide safe construction, risk factor identification safety evaluation system needed. Design/methodology/approach Compared to intuitionistic fuzzy sets, Pythagorean sets similar approaches, spherical provide more nuanced representation of information. They offer greater computational flexibility precision in decision-making scenarios. Building on this, the study...
The coupling calculation model of tunnel and surrounding rock is established by the finite difference method, main design parameters lining structure single-track ballasted under 40-ton axle load, heavy train are studied in combination with cumulative damage mechanism at bottom fatigue life characteristics concrete bottom. results show that (1) inverted arch shall be set sections III-grade above. Whether an invert II-grade below determined according to lithology groundwater conditions. When...
In this paper, 25‐ton and 27‐ton axle heavy trucks are used to carry out moving loading dynamic real vehicle test on the cracked section, intact repaired section of a railway tunnel foundation performance basement structure with change loads health conditions. By analyzing influence law response fatigue life haul train under different conditions (intact, damaged, repaired), adaptability equipment freight load is clarified. The results show that (1) can meet normal operation trains in good...
To reveal the influence of number and location joints on rock failure mechanism, using Particle Flow Code (PFC) to simulate calculation a large amount acoustic emission data generated during breeding, development, penetration cracks, fracture parameters such as spatial location, rupture azimuth, type, stress state, moment magnitude events in various stages multijoint were studied based tensor theory, P-T diagram method, T- k method. It will be great importance geotechnical engineering field.
With the continuous increase of railway transportation volume, aging problem tunnel bottom structure is becoming more and serious, which seriously threatens safe operation trains. Based on cause analysis field detection defects at structure, “Anchor‐Grouting‐Drainage” treatment technology summarized. The research shows that (1) simple can effectively repair under conditions narrow site, short time maintenance skylight, strict requirements track size variation, no interference with normal...
Based on the basic principle of thermodynamics, an elastoplastic damage constitutive model concrete is constructed in this paper. The realized and verified FLAC3D, which provides a solid foundation for study dynamic response fatigue to base structure heavy haul railway tunnel. distribution heavy-duty tunnel with defects were numerically simulated by elastic-plastic model. Then, analyzing characteristics basement under different surrounding rock softening degrees, suspension range degree are...
The stability of an open-pit slope is extremely important factor related to the safe production mine. It first safety technical problem encountered and should be solved in process mine design production. By means engineering geology hydrogeological investigation waste dump area Nayuan coal numerical simulation research, this paper analyzes studies stope detail puts forward measures such as prevention automatic monitoring achieve goal protecting surrounding environment. main research results...
An increasing number of railway tunnels are afflicted with tunnel lining diseases. Through on-site detection diseases in double-track tunnels, this paper analyzed its causative factors and developed a section steel arch frame reinforcement. simulation mechanical performance, both the plate concrete met tensile strength code requirements for design (TB 10003-2016). It effectively repaired damage from under narrow-site short maintenance “window” time conditions without affecting normal...
According to the existing personnel structure, quantity, development strategy, and market demand of Shuohuang Railway Company’s operation maintenance project, quantity various employees company for past three years is predicted, a human resource optimization model based on resources future plans established. Then, optimal solutions two mathematical models were calculated analyzed using LINGO software. Finally, combined with actual situation, allocation project KY was obtained. The following...
In situ stress is the natural existing in stratum without engineering disturbance, also known as initial stress, absolute or original rock stress. order to master of Manmushu Tunnel and Mamo Southwest China, casing solution method adopted this paper. Through combination field measurement laboratory test, basic data such strain during relief are collected, values analyzed with indoor temperature compensation confining pressure calibration, relevant mechanics tests. The measured results show...
In order to determine the internal relationships among seismic wave velocity, axial pressure, and rock porosity, samples taken from NRS170143 borehole of Nickel Rim South mine are tested using a Hoek type triaxial cell equipped with linear variable differential transducers (LVDTs) data acquisition module. The empirical expression between velocity pressure is fitted based on laboratory test samples. Then, P-V model P-φ φ-ε created analyze data. results show that: (1) relationship porosity can...