-
41
Surface Subsidence Control during Deep Backfill Coal Mining: A Case Study
Published 2020-01-01“…Furthermore, control strategies for deep backfill mining are proposed in which the backfill density can be enhanced by optimizing the tamping machine, material composition, and tamping process. …”
Get full text
Article -
42
An Investigation on the Influences of Construction Schemes on Backfilling the River-Crossing Section of a Utility Tunnel
Published 2022-01-01“…The backfill construction of a utility tunnel is as important as its main structure construction. …”
Get full text
Article -
43
The Effect of Backfill Gas Pressure on the Thermal Response of a Dry Cask for Spent Nuclear Fuel
Published 2025-01-01“…On this basis, the present paper addresses the variation in the system heat removal capacity when considering different backfill gas pressures. In particular, the analysis, carried out with the MELCOR code, investigates the thermal response of the ventilated, concrete-based HI-STORM 100S cask, currently employed for spent fuel elements of Light Water Reactors (LWRs), when imposing different initial pressures for the helium backfill gas. …”
Get full text
Article -
44
Performance Comparison between Neutralization Tailings and Flotation Tailings Used for Backfill Mix and Mechanism Analysis
Published 2016-01-01“…A comparison test of different tailings used for underground backfill was conducted, using neutralized tailings from BIOX and flotation tailings of Jinfeng Mine. …”
Get full text
Article -
45
A Solution to the Time-Dependent Stress Distribution in Suborbicular Backfilled Stope Interaction with Creeping Rock
Published 2021-01-01“…The delayed backfilling weakens the backfill’s ground support effect on the nearby rock material. …”
Get full text
Article -
46
-
47
Can Strategic Litigation Backfire? Challenging the Crackdown on Migration NGOs in Greece Through EU Law
Published 2024-08-01Get full text
Article -
48
Investigating the Effect of Solid Components on Yield Stress for Cemented Paste Backfill via Uniform Design
Published 2018-01-01“…Cemented paste backfill (CPB) technology has been applied quite popular around the world. …”
Get full text
Article -
49
Dynamic Shear Properties of Recycled Waste Steel Slag Used as a Geo-Backfill Material
Published 2019-01-01“…Waste steel slag is a recycled industrial solid waste and is sometimes used as backfills, but the dynamic shear properties of waste steel slag have not been researched at present. …”
Get full text
Article -
50
Study on Dynamic Mechanical Properties of Full Tailings Cemented Backfilling Impacted by Cement-Sand Ratio
Published 2018-01-01“…In order to study the effect of cement-sand ratio on the dynamic mechanical properties of the full tailings cemented backfilling, three sets of full tailings cemented backfilling specimens with different cement-sand ratios were prefabricated. …”
Get full text
Article -
51
Effect of Tailings Fine Content on the Properties of Cemented Paste Backfill from the Perspective Packing Density
Published 2021-01-01“…In order to quantitatively study the influence of tailings fine content on the properties of cemented paste backfill (CPB) and further understand the mechanism of tailings fine content acting, the concept of packing density was introduced in this study. …”
Get full text
Article -
52
Numerical prediction of strength and temperature changes within cemented paste backfill considering barricade stability
Published 2025-02-01Subjects: Get full text
Article -
53
Experimental investigation on the anti-detonation performance of composite structure containing foam geopolymer backfill material
Published 2025-01-01“…Additionally, the foam geopolymer backfill reduced structural vibration and liner deformation, with the FGCS structure showing 35% less displacement and 70% less acceleration compared to the CLS. …”
Get full text
Article -
54
Study on the Strength Development of Cemented Backfill Body from Lead-Zinc Mine Tailings with Sulphide
Published 2018-01-01“…The unconfined compressive strength (UCS) development of cemented backfill materials for lead-zinc mine tailings with sulphide was studied. …”
Get full text
Article -
55
Experimental Study on Mechanical Properties of Cemented Paste Backfill under Temperature-Chemical Coupling Conditions
Published 2019-01-01“…To investigate the effect of temperature-chemical coupling on the mechanical properties of cemented paste backfill, three temperatures (20°C, 35°C, and 50°C) and sodium sulfate solution mass concentrations (3%, 5%, and 7%) are applied to simulate the complex environment in a mine. …”
Get full text
Article -
56
A key technology for synergistic backfilling of coal-based solid waste and high-salinity wastewater
Published 2025-01-01“…Methods This study developed a technology for the synergistic treatment of coal-based solid waste and high-salinity wastewater (also referred to as solid-liquid synergistic waste backfilling). Specifically, high-salinity water, rather than ordinary water and additives such as early strength agent, and solid waste cementitious materials—used to replacing part of cement, were mixed while stirring to produce filling paste, which was then pumped to the underground goaves of coal mines. …”
Get full text
Article -
57
Stability Analysis and Confidence Level Evaluation of Backfill Mining under High and Steep Rock Slopes
Published 2018-01-01“…A series of laboratory tests were conducted to obtain the engineering parameters of the rock mass, and the mechanism of action of the backfill mining method was analyzed. After the stability analysis, the average safety factors of HSRS for normal operation are 1.575 (backfill method) and 1.509 (open-stope method), and for seismic conditions, they are 1.470 (backfill method) and 1.380 (open-stope method). …”
Get full text
Article -
58
Rheological Parameters and Transport Characteristics of Fresh Cement Tailings Backfill Slurry in an Underground Iron Mine
Published 2021-01-01“…In this study, fresh cement tailing backfill (CTB) slurry made by unclassified tailings from the Daye iron mine is taken as the research object, and its rheological parameters and transport characteristics are studied via laboratory test and FLUENT software. …”
Get full text
Article -
59
Effect of Desliming of Tailings on the Fresh and Hardened Properties of Paste Backfill Made from Alkali-Activated Slag
Published 2020-01-01“…Cemented paste backfill (CPB) allows environmental friendly management of potentially hazardous tailings generated from milling of nonferrous metal sulphide ores by placing such tailings into the underground mined-out openings. …”
Get full text
Article -
60
Permeability of Sand-Based Cemented Backfill under Different Stress Conditions: Effects of Confining and Axial Pressures
Published 2021-01-01“…Sand-based cemented backfill (SBCB) mining technology is instrumental in utilizing coal resources buried under the water bodies. …”
Get full text
Article