Results 11 to 20 of about 9,646,321 (185)
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 ...
Tianqi Song +2 more
exaly +3 more sources
Applied SciencesUnder deep, high-intensity mining conditions, a high mineral pressure develops at the working face, which can easily cause floor heave deformation of the roadway.
Haojie Xue +6 more
doaj +3 more sources
Evolution Mechanism and Control of Floor Heave in the Deep Roadway with Retained Bottom Coal
Geofluids, 2023 Roadways with retained bottom coal are common in thick coal seam mining, and floor heaving is a prominent problem. In this study, based on the interaction between the floor and two sides of the roadway-surrounding rock, a Winkler elastic foundation beam ...
Peng Li +6 more
doaj +3 more sources
Evaluation Method of Floor Heave Damage Degree and a Case Study in Zaoquan Coal Mine, China
Shock and Vibration, 2021 With the continuous increase of mining depth and complex mining geological conditions, the mileage of roadways in underground engineering such as coal mine is increasing year by year. Complex conditions lead to different floor heave failure laws, and the
Ai Chen, Qing Ma, Xuesheng Liu
doaj +2 more sources
Underground SpaceThe issue of significant floor heave deformation in gob-side entry retaining has long been a challenging problem in the context of longwall mining. This paper studies the floor heave failure mechanism and control method for gob-side entry retaining with ...
Jiong Wang +4 more
doaj +2 more sources
Advances in Civil Engineering, 2023 The floor heave is one of the key factors that can restrict high-efficiency and safety mining, especially in the deep roadways with soft rock. Considering the influences of rock fracturing over time on rock mass properties, a case study of the floor ...
Ivan Sakhno, Svitlana Sakhno
doaj +2 more sources
Floor Heave Mechanism of Gob-Side Entry Retaining with Fully-Mechanized Backfilling Mining
Energies, 2017 Serious floor heave in gob-side entry retaining (GER) with fully-mechanized gangue backfilling mining affects the transportation and ventilation safety of the mine. A theoretical mechanical model for the floor of gob-backfilled GER was established.
Peng Gong +3 more
doaj +2 more sources
Floor Heave Mechanism and Anti-Slide Piles Control Technology in Deep and Large-Span Chamber
Applied Sciences, 2021 Based on plastic limit analysis, the deformation and fracture mechanism of the floor in the large-span chambers of deep mines are discussed and a similarity model test is carried out to verify the reliability of the theoretical analysis. The results show
Jian Shi, Desen Kong
doaj +2 more sources
Applied SciencesThe severe floor heave in gob-side entry retaining is the major restriction factor of the wide application of pillarless mining thin coal seams. Reinforcement and stress-relief floor heave control methods are the most promising.
Ivan Sakhno +5 more
doaj +2 more sources
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 +4 more
openaire +2 more sources