Results 21 to 30 of about 3,184,777 (174)

Mechanism and Control of Asymmetric Floor Heave in Deep Roadway Disturbed by Roof Fracture

Sustainability, 2023
In view of the serious problem of bottom-drum damage in deep mining along empty roadways, the asymmetric bottom-drum damage characteristics and control mechanisms of deep mining along an empty roadway were studied using the trackway of the 11060 working face in Zhao Gu II mine as the research background.
Wensheng Wei, Guojun Zhang, Chunyuan Li, Wenshuai Zhang, Yupeng Shen   +4 more
openaire   +2 more sources

Flexural floor heave mechanism and floor corner piles control technology in soft rock roadway

矿业科学学报, 2021
In order to solve the problem of flexural floor heave support under the condition of weak floor with high stress, the supporting form of concrete filled steel tube floor corner pile is put forward.
Guo Dongming, Kang Xinchao, Lu Zhiying, Chen Qiyu, Zhang Wei, Zhao Zhifeng, Cao Yanpeng   +6 more
doaj   +2 more sources

Experimental Study on the Floor Heave and Failure Process of Rock Samples under Biaxial Step Loading

Applied Sciences, 2023
Floor heave is a typical tunnel issue in tunnelling engineering. To gain deep insights into the deformation mechanism and failure processes of floor heave at the bottom of a tunnel in layered rock, biaxial step-loading tests were conducted on rock ...
Diyuan Li, Zhen Peng, Quanqi Zhu, Jinyin Ma, Hao Gong   +4 more
doaj   +2 more sources

Research on Floor Heave Mechanisms and Control Technology for Deep Dynamic Pressure Roadways

Processes, 2023
In order to study the influencing factors of floor deformation and floor heave mechanisms of deep mining roadways, this paper takes the deep dynamic pressure mining roadway of a mine as the engineering background and adopts a research method combining theoretical analyses, numerical simulations and field observations to study the influence of various ...
Lei Zhu, Chengyong Liu, Wenzhe Gu, Chaofeng Yuan, Yuyi Wu, Zhicheng Liu, Tianqi Song, Fengtian Sheng   +7 more
openaire   +2 more sources

Mechanism and control strategies for asymmetric floor heave in extra-thick coal seam roadways under high stress [PDF]

Scientific Reports
To address the intense stress evolution and severe floor heave in roadways of extra-thick coal seams, this study investigates the catastrophic evolution laws and mechanisms of medium-hard floor strata using the 122,110 working face of Caojiatan Coal Mine
Jie Zhang, Jianping Sun, Bin Wang, Tao Yang, Yifeng He, Shoushi Gao, Guang Qin, Yiming Zhang   +7 more
doaj   +2 more sources

Study on floor heave mechanism and control technology of roadway based on slip line field theory

矿业科学学报, 2021
Based on the slip line field theory, the slip line field model of roadway floor is established.Taking 1021 roadway of Huipodi coal mine in Shanxi Province as the engineering background, the mechanism of asymmetric floor heave of roadway is studied, and ...
Cheng Hui, Zhao Hongbao, Xu Jianfeng, Qin Fengyuan, Zhang Yixiao, Hu Linfeng   +5 more
doaj   +2 more sources

Floor heave mechanisms in underground coal mine roadways [PDF]

, 2019
Several underground coal mines in Australia have been experiencing excessive floor deformation in roadways, better known as floor heave. Although the phenomenon does not generally have safety implications, unexpected floor heave can cause financial losses due to production delays.
Mo, Sungsoon
openaire   +3 more sources

Study on floor large deformation and failure mechanism of water-rich soft rock roadway [PDF]

Scientific Reports
This study investigates the failure mechanisms and stability control of water-rich soft rock roadways, focusing on the severe floor heave in the north wing main roadway of Hongqi Coal Mine, China.
Longhai Li, Yubao Zhang, Rongzhe Zhou, Kai Qi, Yuanjie Zhang, Qinan Li   +5 more
doaj   +2 more sources

Mechanisms of Floor Heave in Roadways Adjacent to a Goaf Caused by the Fracturing of a Competent Roof and Controlling Technology [PDF]

Shock and Vibration, 2020
In traditional sequential single-wing mining practices, one-entry longwall mining systems make it challenging to efficiently and smoothly transfer mining equipment during a continuous mining sequence.
Shuaigang Liu, Jianbiao Bai, Xiangyu Wang, Bowen Wu, Wenda Wu   +4 more
doaj   +2 more sources

Research on Energy Transfer Mechanism and Floor Heave Control Technology of Pressure Relief by Floor Slotting in Deep Roadways

Applied Sciences
Aiming at the difficult problem of floor heave control in deep coal mine roadways, this paper took the 1224 transportation roadway of Shuguang Coal Mine in Shanxi as the engineering background and carried out the first underground industrial test of ...
Xuanqi Liu, Bingyuan Hao, Zhenkai Zheng, Chao Wang   +3 more
doaj   +2 more sources