16 Result(s)
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Article
Uniaxial Compression Testing of Sandstone under Microscope: Damage Characteristics and Failure Mechanisms
A compression module system placed under a microscope was utilized to conduct uniaxial compression testing of sandstone samples. The test system can acquire the image of crack propagation on the specimen surfa...
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Article
Crack Detection of the Urban Underground Utility Tunnel Based on Residual Feature Pyramid Attention Network
The defect detection in the urban underground utility tunnel faces the challenges of low illuminance and large shadow region. The images collected have problems such as noise and uneven illumination, posing hi...
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Article
Stability Prediction of Surrounding Rock in Tunnel Crossing Fault Zone Based on Cusp Catastrophe Theory
To solve the practical engineering problem of cusp catastrophe theory in the prediction of surrounding rock stability. This paper establishes the cusp catastrophe equation in tunnel fault zones, according to t...
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Article
Silicified Microorganisms and Microorganism-Like Particles in the Groundwater of an Abandoned Coal Mine
Relatively little research has been conducted on the preservation of microorganisms and microbial particles in the groundwater of abandoned mines (GAM). In this study, silicified microorganism-like particles, ...
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Article
Preparation and Properties of HUHPC with Low Shrinkage and High Impact Resistance
At present, nuclear energy is widely used to reduce pollution and clean energy. However, the radiation-proof concrete currently used to prepare nuclear shields cannot meet the protection requirements of nuclea...
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Article
Radial Depth Damage Properties of Coal Tunnels Surrounded by Rock under Excavation and Unloading
In order to study the mechanism of radial gradient damage of surrounding rock caused by deep elevated stress coal roadway excavation, a triaxial loading unloading uniaxial reloading coal sample damage test was...
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Article
Disturbance Effect of Blasting Stress Wave on Crack of Rock Mass in Water-Coupled Blasting
The disturbance of a blasting stress wave on rock crack propagation directly affects blasting efficiency. This study aimed to explore the disturbance effect of water-coupled blasting using experimental and the...
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Article
A Hierarchical Single-Surface Model for an Unsaturated Soil-Structure Interface
In this paper, according to the shear test of the interface between unsaturated soil and steel plate, the modified apparent roughness is used to describe interface roughness. And considering the influence of m...
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Article
Water Inrush Detection in Limestone Pit Rock Walls Using Borehole-to-Surface ERT
Large volumes of water originating from limestone pit rock walls can cause construction hazards. To ensure safe construction and avoid inaccurate grouting, localized detection work is necessary. Borehole-to-su...
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Article
Research on the Formulation and Properties of a High-Performance Geopolymer Grouting Material Based on Slag and Fly Ash
In this paper, a high-performance geopolymer grouting material based on slag and fly ash was developed and the properties were investigated. The fluidity, setting time, compressive strength, water resistance a...
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Article
Selectively Desirable Rapeseed and Corn Stalks Distinctive for Low-Cost Bioethanol Production and High-Active Biosorbents
Crop straws provide large amounts of biomass resource for biofuels, but it remains to explore cost-effective lignocellulose process technology with additional valuable bioproducts. Using total eight rapeseed a...
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Article
Installation Time of Ground Support during Tunnel Excavation: A Novel Graph Methodology
Installation time of ground support in many caverns excavation is mainly based on analytical and empirical method, instead of the robust numerical simulations. A novel graph method is proposed to determine the...
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Article
Experimental Study on Axial Compression of Concrete with Initial Crack under Hydrostatic Pressure
The axial compression test of concrete with different initial cracks under hydrostatic pressure is carried out. The fracture propagation is analyzed based on the bearing state as well as the apparent phenomena...
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Article
Evaluation of Rock Vibration Generated in Blasting Excavation of Deep-buried Tunnels
The experimental tunnels of the China **** Underground Laboratory are constructed in a maximum overburden depth of 2375 m and subjected to extremely high in situ stress more than 50 MPa. When these deep-bur...
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Article
Roadway Engineering Mechanical Properties and Roadway Structural Instability Mechanisms in Deep Wells
We proposed a new classification method for stress-bearing structures in very-deep roadways. We conducted tests for roadwayengineering mechanical properties, including rock mechanical tests and ground stress m...
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Article
Numerical Simulation of Water Flow from the Coal Seam Floor in a Deep Longwall Mine in China
The study of groundwater flow from the coal seam floor is critical to safe mining operations in China. We developed a numerical simulation model to describe flood water pathways during mining, using the field ...
