Search Results - "Yunjiang Sun"

Investigation of movement and damage of integral overburden during shallow coal seam mining by Sun, Yunjiang, Zuo, Jianping, Karakus, Murat, Wang, Jintao

“…Most prediction methods used to calculate mining-induced subsidence are empirical, which cannot explain the mechanism of fundamental rock strata movement. In…”
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A New Theoretical Method to Predict Strata Movement and Surface Subsidence due to Inclined Coal Seam Mining by Sun, Yunjiang, Zuo, Jianping, Karakus, Murat, Liu, Lei, Zhou, Hongwei, Yu, Meilu

“…The mining-induced strata movement and surface subsidence are closely related to the dip angle of coal seam. However, most surface subsidence prediction…”
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A Novel Method for Predicting Movement and Damage of Overburden Caused by Shallow Coal Mining by Sun, Yunjiang, Zuo, Jianping, Karakus, Murat, Wen, Jinhao

“…Most prediction methods used to calculate mining-induced subsidence do not involve the formation of overburden, and therefore cannot explain the mechanism of…”
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Investigation on fracture models and ground pressure distribution of thick hard rock strata including weak interlayer by Yu, Meilu, Zuo, Jianping, Sun, Yunjiang, Mi, Changning, Li, Zhengdai

“…Dynamic disasters, such as rock burst due to the breaking of large area stiff roof strata, are known to occur in the hard rock strata of coal mines. In this…”
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Asymmetric analogous hyperbola model of overburden movement and its verification by Jiashun, Liu, Yang, Wang, Jianping, Zuo, Zuoqi, Wu, Yunjiang, Sun, Zhiyong, Zheng

“…The extraction of underground coal resources induces the fracture and movement of overlying strata, leading to geological hazards such as surface deformation,…”
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Investigation on Coal Pillar Stability between Different Shapes of Gasifier Cavities under High Temperatures during UCG by Shi, Yue, Yun, Xiaopeng, Zuo, Jianping, Li, Zhengdai, Sun, Yunjiang, Yu, Meilu

“…The shape of the gasifier cavity and the high temperatures induced by underground coal gasification (UCG) have a significant influence on the failure…”
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Experimental Investigation on the Correlation between Dynamic Ultrasonic and Mechanical Properties of Sandstone Subjected to Uniaxial Compression by Sun, Yunjiang, Zuo, Jianping, Shi, Yue, Li, Zhengdai, Mi, Changning, Wen, Jinhao

“…Ultrasonic wave velocity is effective to evaluate anisotropy property and predict rock failure. This paper investigates the correlation between dynamic…”
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The effects of thermal treatments on the fatigue crack growth of Beishan granite: an in situ observation study by Wang, Jintao, Zuo, Jianping, Sun, Yunjiang, Wen, Jinhao

“…In some temperature-related rock engineering projects, rocks are subjected to cyclic loading. A deep understanding of the influences of temperatures on rock…”
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Investigation on Rockburst Mechanism Due to Inclined Coal Seam Combined Mining and its Control by Reducing Stress Concentration by Mi, Changning, Zuo, Jianping, Sun, Yunjiang, Zhao, Shankun

“…Combined mining is when two working faces separated by a certain distance simultaneously advance in the same direction, which commonly results in stress…”
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Investigation on sandstone wave velocity variation and the stress response of pore structure by Li, Zhengdai, Zuo, Jianping, Sun, Yunjiang, Shi, Yue, Ma, Zongyu

“…This study considered three different sandstones from the surrounding rock in the underground reservoir of the Ningtiaota coal mine in northern Shaanxi…”
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Analysis of Surface Cracking and Fracture Behavior of a Single Thick Main Roof Based on Similar Model Experiments in Western Coal Mine, China by Zuo, Jianping, Yu, Meilu, Li, Chunyuan, Sun, Yunjiang, Hu, Shunyin, Li, Zhengdai

“…Surface subsidence over coal mines in western China is serious. Collapse pits, step subsidence, surface cracks, among others occur during coal mining. Based on…”
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Investigation on fault activation–induced floor water inrush and its pressure relief control in a 1000-m depth coal mine by Sun, Yunjiang, Zuo, Jianping, Mi, Changning, Li, Yubao, Wu, Genshui, Yu, Meilu, Yang, Junhui

“…Many coal mines in China are greatly threatened by floor water inrush due to mining-induced fault activation. In this paper, a theoretical safety factor is…”
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Investigation on fracture models and ground pressure distribution of thick hard rock strata including weak interlayer by Meilu Yu, Jianping Zuo, Yunjiang Sun, Changning Mi, Zhengdai Li

“…Dynamic disasters,such as rock burst due to the breaking of large area stiff roof strata,are known to occur in the hard rock strata of coal mines.In this…”
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Investigation on the interaction mechanism and failure behavior between bolt and rock-like mass by Zuo, Jian-ping, Wen, Jin-hao, Li, Yong-dong, Sun, Yun-jiang, Wang, Jin-tao, Jiang, Yun-qian, Liu, Lei

“…•The failure modes of anchorage body under different diameter matching were studied.•Both equations of tensile force and interfacial shear stress were…”
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Control theory of uniform strength support in deep roadway by Zuo Jianping, Wen Jinhao, Liu Dejun, Wu Lili, Sun Yunjiang

“…In this paper, a large number of coal mine roadway failure cases are investigated, and 6 types and 15 typical failure forms are extracted.The mechanical…”
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Research on In Situ Stress Measurement and Inversion, and its Influence on Roadway Layout in Coal Mine with Thick Coal Seam and Large Mining Height by Zhifei, Song, Yun-jiang, Sun, Xuan, Lin

“…Seven points were selected to measure in situ stress, and the simulation software ANSYS was used to introduce a 3D geological model of Licun colliery, which…”
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Multi-scale failure mechanics of rock in mining engineering by Zuo Jianping, Sun Yunjiang, Liu Haiyan, Yu Meilu, Lei Bo, Song Hongqiang, Wen Jinhao

“…In mining engineering, the multi-scale failure behavior of surrounding rock under the complex stress environment is a fundamental influencing factor of…”
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不同厚度岩层破断模式转变机理及力学模型分析 by 左建平, 于美鲁, 孙运江, 吴根水

“…TD323; 采动岩层的变形、破断、运动模式与采场矿压显现、地表沉陷等密切相关.薄岩层与厚岩层的破断模式又呈现出显著的差异,如何将不同厚度岩层的破断模式统一描述并建立力学模型是岩层移动理论难题.统计了…”
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Analysis of fracture mode transformation mechanism and mechanical model of rock strata with different thicknesses by Jianping ZUO, Meilu YU, Yunjiang SUN, Genshui WU

“…The deformation, fracture, and movement mode of rock strata are greatly related to underground pressure, surface subsidence, etc. The fracture modes of the…”
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Theoretical model and verification of “analogous hyperbola (hyperboloid)” for the overall movement of mining rock strata: From two-dimensional “analogous hyperbola” to three-dimensional “analogous hyperboloid” models by Jianping ZUO, Chengyi XU, Yunjiang SUN, Ying LI, Genshui WU, Meilu YU

“…Coal mining can cause the deformation, fracture, and movement of overlying strata from bottom to top, leading to surface subsidence and other problems. This is…”
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