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Effects of Different Ratios of Fly Ash and River Sand on Mechanical Properties of Cemented Paste Backfill Materials
Published 2024-01-01“…The mechanical properties of cemented paste backfill (CPB) are crucial for stope safety. Some mining areas in the Yellow River basin face a shortage of coal gangue, and these areas have abundant river sand (RS) resources. …”
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62
Experimental Investigation of Water-Inrush Risk Based on Permeability Evolution in Coal Mine and Backfill Prevention Discussion
Published 2019-01-01“…To prevent the flow channel being formed due to the development and failure of rock fractures, a method of backfill gob was proposed and also the influence of backfill on fracture development was discussed.…”
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63
Surface Subsidence Control Mechanism and Effect Evaluation of Gangue-Backfilling Mining: A Case Study in China
Published 2018-01-01“…Comprehensive mechanization solid backfilling mining is a new technology developed in China for coal mining and surface subsidence control. …”
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64
Simulation of the Compressive Strength of Cemented Tailing Backfill through the Use of Firefly Algorithm and Random Forest Model
Published 2021-01-01“…Cemented tailings backfill is widely used in worldwide mining areas, and its development trend is increasing due to the technical and economic benefits. …”
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Effects of Fine Gangue on Strength, Resistivity, and Microscopic Properties of Cemented Coal Gangue Backfill for Coal Mining
Published 2015-01-01“…The cemented coal gangue backfill (CGB) in coal mining is normally made of gangue (particle size of 0–15 mm), fly ash, cement, and water. …”
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67
Vibration and Dynamic Response of Buffering Devices during the Vertical Feeding of Coal Mine Solid Backfill Materials
Published 2018-01-01“…The stability of buffering devices is very important for the continuous vertical feeding of solid backfill materials. Based on the characteristics of the vertical feeding system, the functional characteristics of buffering devices were analyzed and a buffering device was designed in this paper. …”
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68
Control of Water Inrush from Longwall Floor Aquifers Using a Division Paste Backfilling Method
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69
Study on Damage Model and Damage Evolution Characteristics of Backfill with Prefabricated Fracture under Seepage-Stress Coupling
Published 2020-01-01“…Aiming at the backfill with prefabricated fracture under seepage-stress coupling, the concepts of fracture macrodamage, loaded mesodamage, seepage mesodamage, and total damage of backfill were proposed. …”
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70
Structural Analysis of Backfill Highway Subgrade on the Lower Bearing Capacity Foundation Using the Finite Element Method
Published 2021-01-01“…The present study is to investigate the stability of the backfill subgrade on the lower bearing capacity foundation. …”
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71
Strength Investigation of the Silt-Based Cemented Paste Backfill Using Lab Experiments and Deep Neural Network
Published 2020-01-01“…The cemented paste backfill (CPB) technology has been successfully used for the recycling of mine tailings all around the world. …”
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72
Cost-Effective Treatment of Hemihydrate Phosphogypsum and Phosphorous Slag as Cemented Paste Backfill Material for Underground Mine
Published 2019-01-01“…In order to fully utilize hemihydrate PG (HPG) and PS and treat goafs in mines, the HPG and PS were used as cementitious materials for cemented paste backfill (CPB). The physical and chemical properties of HPG and PS were first analyzed, and then, the characteristics of CPB were evaluated through fluidity tests, gas detection, uniaxial compressive strength (UCS) tests, bleeding tests, and scanning electron microscopy (SEM). …”
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73
Insight on intrusion behavior of compacted bentonite with accessory-mineral ring: a modelling approach
Published 2025-01-01Subjects: “…buffer/backfill materials…”
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74
Research on Key Factors Influencing Surface Subsidence of Paste Backfilling Mining in Thick Coal Seam of Deep Mine
Published 2021-01-01“…The research on the key factors of surface subsidence in paste backfilling mining of thick coal seam in deep mine is a complex system engineering, which involves mining, backfilling, support, subsidence, safety, and other aspects. …”
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75
Simplified Method for Calculating the Active Earth Pressure on Retaining Walls of Narrow Backfill Width Based on DEM Analysis
Published 2019-01-01“…Spaces for backfills are often constrained and narrowed when retaining walls must be built close to existing stable walls in urban areas or near rock faces in mountainous areas. …”
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Effect of Compressed Gas on Deep Mine Long-Distance Backfill Pipe Flushing: From Laboratory to Industrial Tests
Published 2024-01-01“…The purpose of this study is to determine the effect of flow velocity, backfill gradient (4–7), gas void fraction (0–1), and gas pressure (0–0.7 MPa) on water consumption. …”
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Investigation on structure stability and damage mechanism of cemented paste backfill under the coupling effect of water-static load
Published 2025-01-01Subjects: “…Cemented paste backfill…”
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79
Sodium Silicate Gel Effect on Cemented Tailing Backfill That Contains Lead-Zinc Smelting Slag at Early Ages
Published 2018-01-01“…This paper presents the results of an experimental study on the priming effect of sodium silicate gel (SS) on cemented tailing backfill (CTB) that contains lead-zinc smelting slag. …”
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Experimental study on the splitting tensile failure of a carbon nanotube-modified fly ash foamed concrete filler
Published 2025-01-01Subjects: Get full text
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