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981
Experiment and Numerical Simulation on Creep Mechanical Behaviors of Mudstone under Unloading Condition
Published 2022-01-01“…When the axial stress is higher than the yield strength of the rock mass, the rock mass enters the tertiary creep stage (which is characterized by large deformation and instability failure in a short period of time). …”
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982
Energy Release Analysis of a Severe Rockburst in a Headrace Tunnel Crossing a Tectonic Stress Zone
Published 2019-01-01“…When tunneling in a hard and brittle rock mass within a tectonic stress zone, dynamic failure of rock mass-rockburst may occur. …”
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983
Evaluation of Water Retention Capacity of Bulkheads in Underground Coal Mines
Published 2021-01-01“…Based on an analysis of the properties of the bulkheads and the surrounding rock, three types of water conducting pathways are identified: (1) a water conducting pathway at the interface between the bulkhead and the surrounding rock; (2) a water conducting pathway in the faults of the rock; and (3) a water conducting pathway in the fractures of the rock. …”
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984
Finite Element Analysis of the Excavation Stability of Deep and Large Ventilation Shafts of Zimuyan Tunnel Using the Raise Boring Machine Method in a Karst Area
Published 2025-01-01“…The excavation of deep and large vertical shafts in karst areas can easily lead to sudden changes in the stress field of the surrounding rock and even cause disasters such as cave collapses. …”
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985
Mechanical Behavior and Impact Resistance Tendency of Coal Mass with Different Water Content
Published 2022-01-01“…At the same time, as one of the puzzles of rock mechanics, it has been perplexing many domestic and foreign scholars since the recorded rock burst in South Stafford coal mine in 1738. …”
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986
Defining Stress Thresholds of Granite Failure Process Based on Acoustic Emission Activity Parameters
Published 2020-01-01“…Stress sensor and dynamic strain gauge are used to measure the load, longitudinal, and lateral deformation of rock in real time. The acoustic emission characteristic parameters of rock fracture process are obtained by using the acoustic emission system. …”
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987
Safety evaluation method of bottom coal thickness in thick coal seam roadway
Published 2024-06-01“…Abstract In recent years, the number of roadway floor rock burst accidents is increasing, which seriously restricts the safe production of the mine. …”
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988
A Study of Acoustic Emission and Damage Evolution of Limestone under Different Stress Paths and Confining Pressures
Published 2021-01-01“…Buried depth is an important factor affecting the deformation and failure of gob surrounding rock. Basing on triaxial compression unloading test and acoustic emission (AE) of limestone under three different initial confining pressures (5 MPa, 10 MPa, and 20 MPa) and three different stress paths, we analyzed the deformation and failure characteristics and energy releasing process of the virgin rock, the gob overburden rock, and the gob sidewall rock with different buried depths (within 1000 m). …”
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989
Damage Evolution of Sandstone under Constant-Amplitude Cyclic Loading Based on Acoustic Emission Parameters and Resistivity
Published 2021-01-01“…In the real environment, besides static load, rock is more affected by cyclic load. There is a large difference in the mechanical properties exhibited by rocks under cyclic and static loading. …”
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990
Experimental Study on the Mechanical Properties and Damage Evolution of Hollow Cylindrical Granite Specimens Subjected to Cyclic Coupled Static-Dynamic Loads
Published 2020-01-01“…The rock specimens with an axial prestress of 62% of the UCS showed energy release during cyclic impact. …”
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991
Sliding Impact Mechanism of Square Roadway Based on Complex Function Theory
Published 2021-01-01“…When the original rock stress is high, the shear failure of the surrounding rock continues to occur after the square failure zone II formed, showing a spiral slip line. …”
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992
Experimental Researches on Long-Term Strength of Granite Gneiss
Published 2015-01-01“…It is important to confirm the long-term strength of rock materials for the purpose of evaluating the long-term stability of rock engineering. …”
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993
Effects of melatonin on planaria head regeneration are dependent on both timing and duration of exposure
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994
Mechanism of Strain Burst by Laboratory and Numerical Analysis
Published 2018-01-01“…Strain burst is often considered to be a type of failure related to brittle rock material; therefore, many studies on strain burst focus on the brittleness of rock. …”
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995
Investigation on Coal Pillar Stability between Different Shapes of Gasifier Cavities under High Temperatures during UCG
Published 2022-01-01“…The shape of the gasifier cavity and the high temperatures induced by underground coal gasification (UCG) have a significant influence on the failure characteristics of the surrounding rock. In this study, the variations in the mechanical properties of the surrounding rock in gasifier cavities subjected to different temperatures (20–700°C) were obtained experimentally, and the results were used to establish numerical models. …”
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996
Study on Catastrophe Information Characteristics of Water Inrush in Karst Tunnel by Drilling and Blasting Method
Published 2022-01-01“…The research results show that (1) the seepage pressure and displacement in the water and mud resistant rock mass decrease and increase respectively along the water and mud resistant rock mass from top to bottom in the process of water inrush. (2) The displacement and seepage pressure in the water and mud-resistant rock mass increases with the increase of the joint inclination angle. …”
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997
Prevention Technology for Strong Mine Pressure Disaster in the Hard-Roof Large-Mining-Height Working Face
Published 2020-01-01“…Considering Tongxin Coal Mine as the engineering background, the stress distribution law of the surrounding rock and the overburden rock damage characteristics of a large-mining-height working face under the hard roof were investigated. …”
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998
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999
Experimental Study on Uniaxial Compression Fracture Process of Marble Specimens with Circular Holes with Different Diameters
Published 2022-01-01“…After a long period of geological tectonic action, the rock mass develops defects such as pores and fissures of different sizes and scales. …”
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1000
Stability Analysis of Host Claystone under T-M Coupling of HLW Disposal Repository in China: Experiments and Numerical Simulation
Published 2021-01-01“…Thermal properties of Tamusu clay rock samples are obtained by testing their thermal conductivity. …”
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