Results 21 to 30 of about 1,276 (260)
Meikuang Anquan, 2021 In order to qualitatively and quantitatively analyze the degree of influence of the water load on the stability of fully mechanized caving coal subsidence area, the underground coal mining subsidence area of Hongyanhe Reservoir was taken as the research ...
HUANG Jianfeng, WU Zhang, ZHANG Zhenzhen, LI Yongqiang, ZHANG Hao
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Gong-kuang zidonghua, 2018 Taking No.12051 fully-mechanized coal face of Zhaogu No.1 Coal Mine as research object, thin bedrock deformation and strata behavior in coal seam mining under ultra-thick unconsolidated strata were studied by use of UDEC numerical simulation software ...
ZHAI Xinxian +3 more
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Meikuang AnquanIn the process of coal seam mining, how to achieve large-scale disposal of coal gangue has always been an important problem to be solved in the green and efficient development of the coal industry.
Bin ZENG +4 more
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BIODIVERSITY OF PHOTOTROPHS IN ILLUMINATED ENTRANCE ZONES OF SEVEN CAVES IN MONTENEGRO
Ecologica Montenegrina, 2019 The biodiversity of the entrance zones of the Montenegro caves is barely studied, therefore the purpose of this study was to assess the biodiversity of several caves in Montenegro. The samples of phototrophs were taken from various substrates of the entrance zone of 7 caves in July 2017.
Kozlova E.V., Mazina S.E., Pešić V.
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Light as a Limiting Factor for Epilithic Algae in the Supralittoral Zone of Littoral Caves [PDF]
Frontiers in Marine Science, 2016 In a littoral cave system, abiotic environmental properties, such as the intensity and spectral distribution of light, often change going from the exterior to the interior part of the cave, filtering the light and thus creating a deep-sea irradiance setting for marine flora.
Mayer, Danielle +2 more
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Bat Colony and Cave Zone Shape Arthropod Assemblages in Levantine Caves
InsectsCaves are characterized by unique abiotic conditions such as limited light, and they therefore support distinct faunal assemblages that often include endemic species. Due to light limitations, photoautotrophic organisms are absent from many subterranean food-webs, which therefore predominantly rely on allochthonous nutrient sources.
Zeana Ganem +3 more
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Romanian Karst – special zones and caves
Geologica Balcanica, 1996 Romania is characterized by a great wealth of karst forms. The most important are bound to several regions, and namely: the Apuseni Mts., South Carpathians, Eastern Carpathians, Dobrogea. Most of the caves should be included in the List of protected natural sites, and some of them are of interest as a part of the World Geological Heritage.
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GeoHazardsDynamically grasping the scope of the caving zone and fractured zone in overlying strata is crucial for ground pressure control in sublevel caving mining.
Fuhua Peng +4 more
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Influence of moisture content on the shape of isolated movement zone in mesoscale
工程科学学报, 2018 Block caving mining has the advantages of large production capacity, safe operation, low mining cost, and easy organization and management. Therefore, it is considered as one of the natural alternatives to the current open cut mining.
LI Tao +4 more
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Research on the Roof Failure Law of Downward Mining of Gently Inclined Coal Seams at Close Range
Applied SciencesWith the increasing depth of coal mining operations, the repeated extraction of multiple coal seams has led to serious safety threats to mines, including secondary roof fracturing, interlayer separation-induced water hazards, and intense mine pressure ...
Tao Yang +8 more
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