A5009257920- Rock Mechanics and Modeling
- Innovative concrete reinforcement materials
- Geotechnical Engineering and Soil Stabilization
- Concrete and Cement Materials Research
- Drilling and Well Engineering
- Geotechnical Engineering and Analysis
- Grouting, Rheology, and Soil Mechanics
- Landslides and related hazards
- Structural Behavior of Reinforced Concrete
- Geotechnical Engineering and Soil Mechanics
- Aluminum Alloy Microstructure Properties
- Climate change and permafrost
- Geotechnical Engineering and Underground Structures
- Cryospheric studies and observations
- Arctic and Antarctic ice dynamics
- Infrastructure Maintenance and Monitoring
- Microstructure and mechanical properties
- Hydraulic Fracturing and Reservoir Analysis
- Magnesium Oxide Properties and Applications
- Recycled Aggregate Concrete Performance
- Tunneling and Rock Mechanics
- Advanced Optical Sensing Technologies
- Remote Sensing and LiDAR Applications
- Aluminum Alloys Composites Properties
- Groundwater flow and contamination studies
China University of Mining and Technology
2012-2024
State Key Laboratory for Geomechanics and Deep Underground Engineering
2022
Tongji University
2012-2022
China University of Petroleum, Beijing
2022
Henan Polytechnic University
2022
Zhejiang University
2021
Anhui University of Science and Technology
2019-2020
National Institute of Advanced Industrial Science and Technology
2010
Jiangxi Copper (China)
2010
Single-photon light detection and ranging (LiDAR) has played an important role in areas from target identification 3D imaging to remote sensing. Its high sensitivity provides the feasibility of lightweight LiDAR systems for resource-limited airborne spaceborne platforms. Here, we design demonstrate single-photon towards compact, small-sized, low-power payload. To reduce system size, utilize small telescopes with optical aperture 47 mm develop sub-pixel scanning approach enhance resolution....
Identifying ecosystem service bundles and their long-term evolutionary characteristics is essential for the overall enhancement of regional services, as well division management functional areas, providing a basis decision-making in formulating ecological environmental protection policies, development planning. Based on land use, remote sensing, meteorological data obtained from Anhui Province, this study assessed six important functions, including food production (FP), water yield (WY),...
To study the effect of confining stress on indentation test rock under different axial and corresponding mechanism penetrating fragmentation, physical numerical experiments single spherical button penetration into green sandstone triaxial conditions were conducted. The results indicate that indices crushing load, yield, brittleness feature, energy consumption first decrease then increase with increasing pressure, high pressure (30 MPa) thickness chips increases by 37%, from 1.11 mm to 1.52...
Underground engineering, especially deep geotechnical is often affected alternately by groundwater infiltration and ventilation drying during construction use. In addition, acid rain, mineral dissolution, deposition, other factors make acidic. This caused the underground structure to erode has also threatened its safety durability. this study, both physical mechanical properties under dry‐wet (A‐D‐W) cycles were investigated. Deep sandstone was treated repeatedly cycling, parameters...
Water is one of the most important factors that affect long‐term stability geotechnical engineering structures. Rainfall often results in periodic changes water content underground rock, which subjected to alternating dry‐wet cycles. In this paper, order study short‐term and mechanical properties red sandstone under these cycles, a series uniaxial compressive strength (UCS) tests multistage creep have been carried out on specimens after being treated different numbers A scanning electron...
Stress arch is a common phenomenon occurring in continupous materials and has also been proved to have great influences on the self-stabilization of soils or rock masses after excavation. In this paper, based UDEC simulation, stress redistribution excavation investigated for kind special discontinuous material, i.e. blocky stratified mass. A layered system observed with each lying over another. This defined herein as "stress bunch". Effects dip angle bedding plane, lateral pressure joint...
Chloride corrosion test was carried out in 4% NaCl solution to study the chloride resistance of rubber concrete. Rubber concrete prepared by using 20 mesh, 1∼3 mm, and 3∼6 mm particles instead sand 5%, 10%, 15%, 20% cementitious material mass. The P‐wave velocity compressive strength were measured. microstructure corroded analyzed SEM. micromorphology compared with macrofailure characteristics under uniaxial compression. results show that still early stage erosion. With increase immersion...
The cross-river subway in the Hangzhou Bay area often passes through deep, thick, soft soil at bottom of river. At same time, overlying erosion, siltation, and changes water levels adversely affect deformation subway, thereby causing hidden dangers to its safe operation. Using two-way dynamic triaxial testing, effects cyclic loading on clay foundation were investigated for first using simulation methodology as prime objective present study. A strain development curve was obtained a result....
In order to study the influence of water content on mechanical properties sandstone and evolution crack propagation, laboratory compression tests Engineering Discrete Element Method (EDEM) numerical simulation under different conditions were carried out by RMT-150B rock mechanics test system. The samples from Nanyang, Henan Province, containing a total 12 samples. Under confining pressure 0, 5, 10, 20 MPa, with 0%, 1.81%, 3.24% tested. findings demonstrated that as sample’s grew, peak strain...
Abstract Hydraulic fracturing is the most widely used primary method for stimulation of unconventional oil and gas resources. While knowledge hydraulic fracture parameters critical to reservoir productivity, predicting initiation important determining complexity network. Subcritical crack growth in rock plays an role forming networks, but understanding influence conditions on subcritical still lacking. In this paper, behavior sandstone shale under ambient air, deionized (DI) water,...
In order to study the mechanical and deformation characteristics of rubber concrete under repeated loading, 50 cycles high-stress equal amplitude cyclic loading uniaxial compression tests were carried out on 30 specimens 5 groups. The change properties during normal (NC) (RC) with 5%, 10%, 15%, 20% content analysed. results show that peak stress modulus elasticity decrease strain increases increase content. After degradation degree NC elastic reached 11.0% 36.8% respectively. This can...
In this study, a test technique that enables continuous control of the sample stress state from freezing to testing is proposed investigate influence pressure on mechanical properties ice under uniaxial compression. method, water frozen into standard cylindrical specimen high hydraulic in triaxial chamber, and then, temperature field specimens are adjusted initial test; finally, an situ conducted chamber. The compression with −20°C 0.5–30 MPa performed strain rate range 5 × 10 −5 −1.5 −6 s...
Equal channel angular extrusion (ECAE) experiments were conducted on as-cast pure Cu, Cu–10%Zn, and Cu–30%Zn, using a 90 die for up to 4 passes. The stacking fault energies (SFEs) of the three materials decrease with increasing Zn content. microstructures textures processed billets analyzed optical microscope X-ray diffraction, respectively. results show that structures all significantly refined after ECAE lower SFE led finer microstructure higher density shear bands. considerably weakened...
In this paper, the carbonation depths of glazed hollow bead insulation concrete (GHBC) and normal (NC) at different ages are tested. The microstructure GHBC NC before after were observed compared by mercury intrusion porosimetry (MIP), energy dispersive spectrometer (EDS), X-ray diffraction (XRD). results showed that had better resistance than GHBC, a depth 1.61 times 28 days accelerated experiment. microstructural analysis with decrease porosity samples, carbon content CaCO3 increased...
Study of the compressive strength and damage constitutive model frozen sand has an important significance for construction design prevention-control soil destabilization in engineering. In this paper, a new triaxial apparatus was used to carry out series compression tests under different confining pressure strain rate, based on which segmental criterion is established describe microelement sand. Assuming that obeys Weibull distribution, statistical by statistics continuous medium mechanics....
A new ECAP process method called rotary-die (RD-ECAP) was developed to form fine-grained bulk materials such as aluminium alloys, magnesium composites, and titanium, all of which can be processed under conditions 573-773K, at an approximately 0.9-2.4 mm/s punch speed 300MPa or lower. By the RD-ECAP method, processing up 2 passes done without sample removal samples over 30 cycles were obtained.