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Article
Materials Science, Multidisciplinary
Zongnan Li et al.
Summary: The sublevel open stoping with backfill method has become popular in underground metal mines, but it faces the problem of stope collapse and ore dilution caused by blasting in the secondary ore stope. In this study, numerical simulations are conducted to analyze the incident stress induced by blasting at the interface of primary CPB stope and secondary ore stope. The results show that the CPB stope is affected by horizontal compressive and tensile stresses within the height of the explosive charge, while the section below the charge height has no significant blasting impact.
Article
Geochemistry & Geophysics
Chongchong Qi et al.
Summary: This study analyzed the interaction between rock mass and backfill through numerical simulations, exploring the effects of creep behavior, filling interval time, and backfill strength on stress, displacements, and plastic deformation. The results showed that different parameters have an impact on the stability of backfilled stopes, with filling interval time being a key factor.
Article
Geochemistry & Geophysics
Shunman Chen et al.
Summary: As underground mines become more common, the cemented paste backfill (CPB) technology is increasingly important for solving the instability and subsidence problems. This research focuses on the coupled effects of curing conditions on the CPB strength, establishing a mathematical model that accurately predicts the uniaxial compressive strength (UCS) of CPB. Experimental results confirm the reliability of the model.
Article
Energy & Fuels
Tomasz Urych et al.
Summary: This study constructed dynamic simulation models to investigate the injection of CO2 into saline aquifers in the Choszczno-Suliszewo structure in northwest Poland. The study analyzed two scenarios with different injection rates and observed changes in pressures and the spatial distribution of CO2 in the structure. The results showed that the sequestration process was highly effective due to the dissolution of CO2 in brine and resulting convection motion. Additionally, the displacement of injected CO2 to the sealing layers was observed.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Construction & Building Technology
Chao Zhang et al.
Summary: The study explores the mechanical properties and energy evolution law of layered cemented paste backfill (LCPB) through experiments and analysis. The results show characteristics such as failure type, elastic energy, strength, etc. These characteristics are affected by factors such as confining pressure and layer number.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Zepeng Yan et al.
Summary: Cemented tailing-waste rock backfill (CTWB) plays an important role in improving the ecological environment of the mine. The rheological and wall-slip characteristics of CTWB paste were analyzed and a numerical model was established to simulate the flow process. The results showed that CTWB is a yield-plastic fluid with shear-thickening phenomenon at certain solids content. Increasing the coarse aggregate content improved the fluidity of the paste. The slip behavior of the CTWB paste was significantly affected by the tailing-waste rock ratio, inlet velocity, and solid content.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Geochemistry & Geophysics
Jiandong Wang et al.
Summary: Cemented paste backfill (CPB) blended with coarse aggregates (CA-CPB) is a widely used technology for environmental protection and underground goaf treatment. This study investigates the influences of solid concentration, coarse aggregates dosage, and cement dosage on the rheological properties and compressive strength of CA-CPB through experimental methods. The results show that solid concentration and cement dosage have the most significant effects on the rheological properties and compressive strength, respectively. Multiple response optimization is performed using an overall desirability function approach to obtain the optimal parameters for high fluidity and strength, providing valuable information for the CA-CPB process in the Chifeng Baiyinnuoer Lead and Zinc Mine.
Article
Engineering, Chemical
Sergey Vlasov et al.
Summary: This study focuses on measures aimed at controlling emergency shutdowns of stopes. By applying the theoretical method of scientific cognition and statistical analysis, a set of actions are proposed to prevent uncontrolled situations. However, these measures do not completely solve the problem, and further search for new solutions is necessary in the future.
Article
Mining & Mineral Processing
Vasyl Lyashenko et al.
Summary: The study aims to investigate the stress-strain state of rock mass, determine the technical and environmental safety of underground mining, propose a relationship between rock mass SSS value and destruction sounds, and develop safe parameters for stopes in complex ore deposits. The importance of stopes for the mining of complex ore deposits is emphasized and practical methods are suggested.
MINING OF MINERAL DEPOSITS
(2022)
Article
Construction & Building Technology
Genwei Li et al.
Summary: This study investigates the response of backfilled stopes during the blast excavation of adjacent ore stopes through numerical simulations. The effects of blasting schemes and ratios of cement to tailings (c/t) on the responses are explored. The results show that different blasting schemes produce similar breaking performance in the ore stope, while the simultaneous blasting scenario induces the minimum damage volume in the backfilled stope. The damage in the backfilled stope decreases as the c/t ratio decreases.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Gaili Xue et al.
Summary: This research develops an efficient acoustic emission technique to study the strength, acoustic and fractal characteristics of fiber reinforced CTB materials. The study finds that polypropylene provides the best fiber reinforcement influence.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Geochemistry & Geophysics
Hao-Yu Qiu et al.
Summary: This study analyzed the stope stability in Bainiuchang Mine based on the pillar area bearing theory and numerically simulated the stability with different structural parameters. The results showed that the existing parameters were not sufficient to maintain stability and had a risk of collapse. The optimized parameters achieved a balance between safety and economy, with an ore recovery rate of 82%.
Article
Mining & Mineral Processing
Yerdulla Serdaliyev et al.
Summary: This article presents a method for determining the level of actual losses and dilution of ore when mining thin slope deposits. The method involves analyzing the patterns of influence of ore body elements and stope parameters, and using blasting force for ore delivery to predict excess losses and dilution coefficients. The authors conducted experiments in the Akbakai deposit to determine the actual losses and dilution, and proposed measures to prevent stope roof caving.
MINING OF MINERAL DEPOSITS
(2022)
Article
Materials Science, Multidisciplinary
Xinyuan Zhao et al.
Summary: This paper investigates the application of solid waste for underground backfilling. The proportioning experiment is designed using response surface methodology, and regression models for strength at different curing ages are established. The interaction and influence effects of different solid wastes on age strength are analyzed. The optimal ratio of solid waste for backfilling is determined, and the compression deformation, failure morphology, and pore structure characteristics of the backfill specimens are analyzed.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Mining & Mineral Processing
Svetlana Sedina et al.
Summary: The purpose of this study is to create and study a three-dimensional geomechanical model to determine the parameters of open-pit walls and benches, ensure safe and economically feasible mining, and predict unstable zones within the open pit. A comprehensive methodological approach is used, including analyzing literature, previous studies, conducting engineering-geological surveys, laboratory testing, and numerical modeling. The results show the development of a geomechanical model for an iron-ore open pit in Kazakhstan, which combines all parameters affecting mining safety and considers structural disturbances of the rock mass. The practical implications include a visual representation of the rock mass state, simplified stability calculations, and facilitating the choice of optimal technical solutions for complex geological structures.
MINING OF MINERAL DEPOSITS
(2022)
Article
Environmental Sciences
Guang Li et al.
Summary: The study on surface rock mass and backfill deformation in the Jinchuan mine reveals the formation of settlement funnels with multiple subsidence centers as mining and backfilling progresses. The filling body also experiences significant subsidence with layer separation phenomena. Horizontal shrinkage and vertical uplift and subsidence are the main deformation characteristics of the backfill.
Article
Green & Sustainable Science & Technology
Marat M. Khayrutdinov et al.
Summary: This paper proposes a mathematical modeling method for solving the problem of reusing man-made waste from mining and ore processing. The study suggests using intermediate products such as tailings, rocks, and technical water as fill material in cyclic production. The influence of mining factors on fill material composition and parameters is justified, and a practical implementation with an algorithm is presented. Deformation changes and stress concentration are key criteria in the proposed model.
Article
Energy & Fuels
Ali Saeidi et al.
Summary: In deep underground mines, the success of exploiting deeper mining levels relies heavily on considering the magnitude and direction of in-situ stress state, which involves significant uncertainties in parameter estimation. The stability assessment of underground structures depends strongly on the in-situ stress values, which are determined by stress measurements as well as engineering judgment. Different stress scenarios can lead to varying stability analysis results, emphasizing the importance of selecting appropriate stress estimation methods in planning deeper mine levels.
GEOMECHANICS FOR ENERGY AND THE ENVIRONMENT
(2021)
Article
Engineering, Geological
Isaac Vennes et al.
Summary: Large-scale panel destressing is a rockburst control technique aimed at reducing pillar burst proneness by creating a stress shadow in the ore pillar to be mined. This paper discusses the impact of high mining-induced stress anisotropy on the efficiency of destress blasting, using Phase 3 destress blasting results at Copper Cliff Mine as a case study.
ROCK MECHANICS AND ROCK ENGINEERING
(2021)
Article
Geochemistry & Geophysics
Oleg Bazaluk et al.
Summary: The study investigates the deformation processes in unstable rocks of the hanging wall during mining a thick steeply dipping ore deposit, using the Yuzhno-Belozerskyi deposit as an example. It reveals the issues of stability and ore failure in the hanging wall rocks, emphasizing the importance of optimizing stope parameters for successful mining and stope stability.
Article
Mining & Mineral Processing
M. N. Bagde
Summary: Ore dilution is a common issue in mining operations, impacting the costs of mining, transportation, milling, and processing. It can occur at any stage of underground hard rock mining, making it necessary to study the various influencing factors and implement control measures.
JOURNAL OF MINING SCIENCE
(2021)
Article
Multidisciplinary Sciences
Ashok Kumar Godugu et al.
Summary: A methodology utilizing three-dimensional elasto-plastic analysis has been developed to evaluate the required strength parameters for a stable backfill wall in different dimensions of a stope. The numerical modelling results show varying trends for required backfill cohesion based on stope height, and highlight the limitations of a popular theoretical equation in representing interface friction and tension. This methodology has been successfully implemented in over 50 stopes in a hard rock mine in North India.
Article
Engineering, Chemical
Lang Liu et al.
Article
Geosciences, Multidisciplinary
Ilyes Hezaimia et al.
ARABIAN JOURNAL OF GEOSCIENCES
(2019)
Review
Engineering, Chemical
Chongchong Qi et al.
MINERALS ENGINEERING
(2019)
Article
Engineering, Geological
Quansheng Liu et al.
ROCK MECHANICS AND ROCK ENGINEERING
(2018)
Article
Energy & Fuels
Karolina Wojtacha-Rychter et al.
Article
Multidisciplinary Sciences
A. A. Azaryan et al.
SCIENCE AND INNOVATION
(2018)
Article
Engineering, Geological
Naguleswaran Niroshan et al.
GEOTECHNICAL AND GEOLOGICAL ENGINEERING
(2018)
Article
Engineering, Geological
Virginie Urli et al.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2016)
Article
Mining & Mineral Processing
M. Petlovanyi
MINING OF MINERAL DEPOSITS
(2016)
Article
Engineering, Geological
Wei Wu et al.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2015)
Article
Geosciences, Multidisciplinary
Andrea Brogi
JOURNAL OF STRUCTURAL GEOLOGY
(2008)
