Recent Progress in Polymer-Containing Soft Matters for Safe Mining of Coal

Wang, Hetang; Du, Yunhe; Wang, Biao; Qin, Botao

doi:10.3390/polym11101706

Cited by 10 publications

(5 citation statements)

References 102 publications

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“…The concept was first introduced by China University of Mining and Technology [42]. Based on the concept of two-phase foam, solid substances such as fly ash or yellow mud are added to form a solid-liquid-gas three-phase system [43]. The three-phase foam exhibits the characteristics of encapsulation, heat absorption, and dissipation, as well as oxygen isolation, thereby enhancing its effectiveness in suppressing mine fires [44,45].…”

Section: Three-phase Foammentioning

confidence: 99%

Exploration and Frontier of Coal Spontaneous Combustion Fire Prevention Materials

Han,

Niu,

Zhu

et al. 2024

Processes

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Mine fires have always been one of the disasters that restrict coal mining in China and endanger the life safety of underground workers. The research and development of new fire prevention materials are undoubtedly important to ensure the safe and efficient production of modern mines. At present, the main inhibiting materials used are grout material, inert gas, retarding agent, foam, gel, and so on. In order to explore the current situation of coal spontaneous combustion (CSC) fire prevention, the existing fire prevention materials were reviewed and prospected from three aspects: physical, chemical, and physicochemical inhibition. The results show that, at present, most of the methods of physicochemical inhibition are used to inhibit CSC. Antioxidants have become popular chemical inhibitors in recent years. In terms of physical inhibition, emerging biomass-based green materials, including foams, gels, and gel foams, are used to inhibit CSC. In addition, CSC fire-fighting materials also have shortcomings, including incomplete research on the mechanism of material action, poor stability of inhibitory properties, low efficiency, and economic and environmental protection to be improved. The future research direction of fire-fighting materials will be based on theoretical experiments and numerical simulation to study the mechanism and characteristics of CSC and develop new directional suppression materials with physicochemical synergies. These findings have extremely important implications for improving materials designed to prevent CSC.

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Section: Three-phase Foammentioning

confidence: 99%

Exploration and Frontier of Coal Spontaneous Combustion Fire Prevention Materials

Han,

Niu,

Zhu

et al. 2024

Processes

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“…According to data from the United States Environmental Protection Agency for 2014 [ 8 ], the main sources of dust included wildfires, non-road and on-road dust, industrial processes, and fuel combustion, where industrial processes contributed the most to pollution, at 63% and 87% for PM2.5 and PM10, respectively. Coal mining contributes highly to pollution; therefore, much of the recent work has been devoted to creating effective dust suppressors for coal particles [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. If we consider dust sources in cities far from industrial centers and do not consider wildfires, then the main source of dust is road dust, at 48% and 62% for PM2.5 and PM10, respectively [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Humic-Based Polyelectrolyte Complexes for Dust Suppression

et al. 2023

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The present study proposes a novel application of humic substance–aminosilsesquioxane polyelectrolyte complexes (HS–ASQ) as dust suppressants. These complexes are synthesized through the reaction between humic substances (HS) and 3-aminopropyltriethoxysilane (APTES) in aqueous solution, resulting in the formation of active silanol groups that can bind to mineral surfaces and condense, forming gels. The HS–ASQ compositions were found to have a high sorption capacity for dust particles and could form coatings on their surface without cementing the dust, making them potentially useful for environmental applications. The viscosity of the HS–ASQ compositions can be controlled by adding carboxymethylcellulose (CMC), which also enhances their dust suppression abilities. Different compositions of HS–ASQ were synthesized by varying the proportions of APTES and CMC, and dust treated with these samples was assessed for its resistance to wind erosion using a laboratory-scale setup. Treatment with the HS–ASQ composition resulted in substantial reductions in PM10 and PM2.5 concentrations (particulate matter with aerodynamic diameters of 10 µm and 2.5 µm, respectively) of up to 77% and 85%, respectively, compared to the control.

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“…The polymeric foams have good chemical resistivity which is an advantage for their usability in rock engineering. Furthermore, the ability to solidify soon after pumping into the cavities supplies load bearing capacity in early times [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

An Investigation of Foam Concrete Usability as a Cavity Filler Material in Mining

Komurlu

2021

GSE

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Strength and deformability properties of different cavity filler materials of a phenolic foam, a polyurethane based foam and a foam concrete (FC) mix were investigated and compared in this study. Instead of using polymeric foam fillers, FC usage was found to supply better load bearing capacity and modulus of elasticity values. The fresh FC mixes consisting of cement, water and foaming agents are able to be filled into the mine cavities. In the cavity filling applications, typical polymer foams cause support reactions with low stiffnesses and let the rock mass at the roof to be loosened. A relatively stiff cavity filling material can help rock masses to bear itself by prevention of the loosening. To avoid excessive deformations of the rock masses, the deformation modulus is an important parameter as well as the strength property. The FC filler materials were found advantageous because of economical supply of improved load bearing capacities and stiffness values for controlling the rock mass convergences.

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Recent Progress in Polymer-Containing Soft Matters for Safe Mining of Coal

Cited by 10 publications

References 102 publications

Exploration and Frontier of Coal Spontaneous Combustion Fire Prevention Materials

Exploration and Frontier of Coal Spontaneous Combustion Fire Prevention Materials

Humic-Based Polyelectrolyte Complexes for Dust Suppression

An Investigation of Foam Concrete Usability as a Cavity Filler Material in Mining

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