Results 11 to 20 of about 3,184,777 (174)
Mechanism and control technology of roadway floor heave deformation and failure under the influence of repeated mining in multiple coal seams [PDF]
Scientific ReportsDeformations caused by of roadway floor heave due to the repeated mining of multiple coal seams is a prominent problem in deep coal mining. This work examines roadway floor heave under the influence of repeated mining in multiple coal seams as the ...
Fu Yuping +3 more
doaj +3 more sources
Study on Mechanism and Control Technology of Asymmetric Floor Heave in a Deep Soft Rock Main Roadway
Geofluids, 2022 Considering the serious asymmetric deformation and failure of the floor of 1# main roadway in Wanglou Coal Mine, the mechanism of roadway asymmetric floor heave was studied through on-site investigation, theoretical analysis, numerical simulation, and on-
Fulian He +5 more
doaj +3 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 +4 more sources
Mechanism of Roadway Floor Heave Controlled by Floor Corner Pile in Deep Roadway under High Horizontal Stress [PDF]
Advances in Civil Engineering, 2021 In order to overcome the support difficulty of serious floor heave caused by rock burst, with the floor heave of ventilation roadway in Hegang Xing An Coal Mine as the engineering background, the treatment scheme of the concrete-filled steel tube corner ...
Xinchao Kang, Dongming Guo, Zhiying Lu
doaj +3 more sources
Energies, 2020 The stability of the surrounding rock is the key problem regarding the normal use of coal mine roadways, and the floor heave of roadways is one of the key factors that can restrict high-yield and high-efficiency mining.
Xingping Lai +5 more
doaj +4 more sources
International Journal of Mining Science and Technology, 2013 Comparing with the resin bolt, the hydraulic expansion bolt has different anchoring mechanism and application advantage. According to the working mechanism of the hydraulic expansion bolt, its anchoring force is expressed in four forms including support ...
Qingliang Chang +3 more
doaj +4 more sources
Management of floor heave at Bulga Underground Operations – A case study
International Journal of Mining Science and Technology, 2019 This paper presents an overview of the floor heave management at the Glencore Bulga Underground Operations and investigates the contributing factors to the behaviour of the floor.
Sungsoon Mo, Kudret Tutuk, Serkan Saydam
doaj +4 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
Energies, 2023 Due to their tense mining succession relationship, gob-side roadways may undergo significant deformation under multi-mining pressure. In this article, many methods, such as on-site research, a theoretical analysis, a numerical simulation and an ...
Deqiu Wang +11 more
doaj +4 more sources