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Current Status of The Mechanism of Floor Heave in Deep Tunnels
Frontiers in Science and EngineeringFloor heave is an important problem in coal mining. And there has been no consensus on the mechanism of floor heave in deep roadways. Severe floor heave can affect the ventilation, bottom slope and normal use of machinery in the roadway. In this case, analyzing the current situation of the research on the mechanism of floor heave in deep roadway, and ...
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Theatres of Indirectness: Passive Aggression and Failure
Critical Quarterly, EarlyView.
Sara Crangle, Sam Ladkin
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Gong-kuang zidonghuaThe floor heave failure of small coal pillar roadways involves multiple disciplines, with numerous coupled influencing factors, and the current understanding of its failure mechanism remains incomplete.
SHI Jinmin +6 more
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Research on deformation law of roadway surrounding rock in Cuijiagou Coal Mine
Gong-kuang zidonghua, 2018 Taking return airway of No.2209 working face of Cuijiagou Coal Mine as engineering background, deformation of roadway surface and deep surrounding rock of roof were monitored for 30 d by use of cross distribution point method and roof separation ...
FENG Chao, FAN Gongqin
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Global Evidence for Off‐Axis Flexural Modification of Abyssal Hill Faults at Mid‐Ocean Ridges
Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.Abstract Young oceanic lithosphere flexes as axial topography decays across mid‐ocean ridge shoulders, yet this deformation has been quantified at only a few segments, leaving its global expression poorly constrained. We analyzed 50 across‐axis bathymetric profiles from 21 regions spanning slow to fast spreading rates, identified 1,201 abyssal‐hill ...
Ran Li +4 more
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Mechanism and Control of Asymmetric Floor Heave in Deep Roadway Disturbed by Roof Fracture
, 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 ...
Yupeng Shen +4 more
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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. The failure characteristics of the surrounding rock of the flexural floor are studied on the research background of the 18-floor south track roadway of the ...
Guo Dongming +6 more
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Control of floor heaves with steel pile in gob-side entry retaining
International Journal of Mining Science and Technology, 2016 Abstract A new approach named as steel pile method is innovatively proposed in this study to control severe floor heaves in gob-side entry retaining. It is required that the steel piles be installed in the floor corners with a certain interval before the influence of the dynamic pressure induced by current panel extraction. Using numerical simulation
Ying Xu, Jin Chen, Jianbiao Bai
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Energies, 2018 To study the effectiveness of grouting reinforcement on a large heaving floor of the retained goaf-side gateroad (RGSG) at a 900 m depth in the Zhuji coal mine, a numerical model involving strain softening constitutive material was built.
Zhiyi Zhang, Hideki Shimada
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Gong-kuang zidonghuaIn mining roadways located between solid coal and small coal pillars, the problem of asymmetric floor heave is severe due to the influence of factors such as asymmetric support pressure, plastic deformation of small coal pillars, and weak floor strata ...
HUANG Yutong +3 more
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