Mitigation of floor heave in West Kentucky Coal Mine
International Journal of Mining Science and Technology, 2016 A West Kentucky mine operation in No. 11 seam encountered floor heave, due to the localized increase in the thickness of the fireclay mine floor. Floor heave has overridden seals installed in two mined out panels. The third seal's location was planned for isolating that area from the Mains.
Kyle Perry +3 more
exaly +3 more sources
The Floor Heave Mechanism and Control Technology of Gob-Side Entry Retaining of Soft Rock Floor
Sustainability, 2023 Extensive soft-rock floor heave in gob-side entry retaining considerably restricts the efficient and sustainable production of the mine. The mechanical capacities of roadway roof and floor strata are discussed through laboratory tests by taking the N2301 fully caving surface auxiliary transport gate road of the Ancient City Coal Mine in the Lu’an ...
Qi Ma, Zexin Li, Guangyuan Song
exaly +3 more sources
A new coal mine floor rating system and its application to assess the potential of floor heave [PDF]
International Journal of Rock Mechanics and Minings Sciences, 2020 Abstract Several underground coal mines have reported floor heave associated with the buckling mechanism. However, studies on the coal mine floor, especially the buckling failure mechanism in the floor and relevant analysis techniques, are still insufficient.
Hamed Lamei Ramandi +2 more
exaly +4 more sources
Modeling of Floor Heave in Underground Roadways in Dry and Waterlogged Conditions
Energies, 2022 Floor heaving is a phenomenon that occurs in almost all mining roadways and tunnels. It can restrain the advance of the heading face or cause serious problems during roadway use. The highest levels of floor uplifting are observed in coal mines, which can reduce the output or even stop it altogether. The floor heaving intensity depends on the rock type,
Łukasz Ostrowski +2 more
exaly +4 more sources
Research on Theory and Technology of Floor Heave Control in Semicoal Rock Roadway: Taking Longhu Coal Mine in Qitaihe Mining Area as an Example [PDF]
Lithosphere, 2022 As one of the most common disasters in deep mine roadway, floor heave has caused serious obstacles to mine transportation and normal production activities. The third section winch roadway in the third mining area of Qitaihe Longhu coal mine has a serious
Xuming Zhou +7 more
doaj +2 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
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 +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
Study on the evolutionary mechanism and synergistic control technology of floor heave in deep high-stress roadways [PDF]
Scientific ReportsTo address floor heave control in deep high-stress roadways, this study established a slip-line field model of the roadway floor based on plastic mechanics.
Caiyun Yin +7 more
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