Floor Heave Mechanism of Gob-Side Entry Retaining with Fully-Mechanized Backfilling Mining
نویسندگان
چکیده
منابع مشابه
Floor Heave Mechanism of Gob-Side Entry Retaining with Fully-Mechanized Backfilling Mining
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. The effects of the mechanical properties of floor strata, the granular compaction of backfilling area (BFA), the vertical support of roadside suppor...
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Hong-sheng Wang 1,*, Dong-sheng Zhang 2, Lang Liu 1, Wei-bin Guo 1, Gang-wei Fan 2, KI-IL Song 3,* and Xu-feng Wang 2 1 School of Energy Engineering, Xi’an University of Science and Technology, Key Laboratory of Western Mine Exploitation and Hazard Prevention with Ministry of Education, Xi’an 710054, China; [email protected] (L.L.); [email protected] (W.-b.G.) 2 School of Mines, State Key Labora...
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Taking Ping Dingshan Coal Mine Group 12 as an example, this paper explains the system layout, key equipment and backfilling technology in detail. It probes into the characteristic of rock strata movement behavior and surface deformation above the gob area through in-site measurement method. The results show that as the overburden strata are effectively supported by the backfill body in mined ou...
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China produces and consumes most of coal in the world. This situation is expected to continue within a certain period in the future. Currently, Chinese coal industry is confronted with several serious problems relating to land resource, water resource, environmental, and ecological sustainability. Coal resource exploitation causes the permanent fracture and movement of strata structure, which h...
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Sudden falls of large-area hard roofs in a mined area release a large amount of elastic energy, generate dynamic loads, and cause disasters such as impact ground pressure and gas outbursts. To address these problems, in this study, the sleeve fracturing method (SFM) was applied to weaken a hard roof. The numerical simulation software FLAC3D was used to develop three models based on an analysis ...
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ژورنال
عنوان ژورنال: Energies
سال: 2017
ISSN: 1996-1073
DOI: 10.3390/en10122085