Operation optimization of a refrigeration ventilation system for the deep metal mine

Wang, Shuo; Wang, Wen-pu; Shao, Kun; Ding, Wenhao; Cui, Zheng; Shao, Wei; Ji, Wan-xiang

doi:10.1016/j.csite.2023.102817

Cited by 7 publications

(4 citation statements)

References 25 publications

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“…Mine ventilation systems transport fresh surface air to underground areas, diluting or removing toxic and harmful gases and dust, thereby providing a relatively safe and comfortable working environment for underground operations [ [69] , [70] ]. The primary focus of investigating ventilation systems involves conducting detailed analyses and hazard assessments of these systems, followed by implementing necessary improvements.…”

Section: Discussionmentioning

confidence: 99%

Bibliometric analysis and review of mine ventilation literature published between 2010 and 2023

Xue,

Wang,

Xiao

2024

Heliyon

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Section: Discussionmentioning

confidence: 99%

Bibliometric analysis and review of mine ventilation literature published between 2010 and 2023

Xue,

Wang,

Xiao

2024

Heliyon

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“…In general, the greater the flexural strength of cement stone, the better its ability to withstand external pressure and compression pressure, so the better the durability of the cement sheath, the longer the service life of the wellbore. 45 Therefore, in the selection of building materials, the flexural strength of cement is also one of the important indicators to be considered. The flexural stress-strain curves of cement stones containing different doses of HEEP are shown in Figure 11.…”

Section: Flexural Strength Of Cement Stonesmentioning

confidence: 99%

Preparation of epoxy resin elastic particles and their application in oil well cement

Peng,

Zhang,

Feng

et al. 2023

J of Applied Polymer Sci

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To solve the problem of high brittleness and easy cracking of cement stone, epoxy resin powder elastic particles (HEEP) were developed to improve the elasticity of cement stone. HEEP was prepared from epoxy resin and trimeric anhydride by solution polymerization. The surface wettability and particle size of HEEP were analyzed by contact angle test and laser particle size analysis respectively. Mechanical performance tests, scanning electron microscope (SEM) analysis and x‐ray diffraction analysis were conducted on the cement stone containing HEEP. The results showed that HEEP was the target product, with a hydrophilic surface and a water contact angle of 75.2° on the HEEP surface. The particle size distribution of HEEP was uniform, and the median particle size was 36.5 μm. The initial decomposition temperature of HEEP was 300°C, indicating a good thermal stability. The stress–strain curve showed that when the HEEP dosage was 3%, 6%, and 9%, the elastic modulus of the cement stone was 6.382, 4.017, and 3.148 GPa, respectively. Compared with the blank cement without HEEP, the elastic modulus was reduced by 28.3%, 54.9%, and 64.6%, respectively. This showed that HEEP could effectively improve the elasticity of cement stone. In addition, the compressive strength and flexural strength of cement stone containing HEEP can meet the requirements of on‐site applications. SEM analysis of cement stone showed that HEEP was well filled in cement stone. When the cement stone was subjected to complex stress, HEEP could effectively buffer and disperse the stress, thereby enhancing the resistance of cement stone to external force impact.

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“…Considerable advancements have been made in cooling theory, , cooling technology, and cooling equipment . Both mechanical refrigeration and cooling solutions (such as cold air, cold water, and cold ice), − as well as nonmechanical cooling solutions (such as system optimization and increased airflow), − have been developed. Although these programs have enhanced the mine’s operating environment, the efficacy of mine cooling remains limited due to challenges such as increased mining depth, system complexity, long distances for cold transmission, frequent location changes, significant cold loss, and difficulty discharging condensation heat.…”

Section: Introductionmentioning

confidence: 99%

Thermal Insulation Properties and Simulation Analysis of Foam Concrete Regulated by Mechanical and Chemical Foaming

Jia,

Zou,

Cui

et al. 2023

ACS Omega

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To address, mitigate, or prevent thermal environmental issues arising from the heat dissipation of high-temperature surrounding rocks in deep hot tunnels, a research proposal is put forward based on previous studies and the team’s initial experiments. The proposal involves using mechanical and chemical foaming to enhance the thermal insulation properties of foamed concrete, and this will be tested through engineering verification. Different proportions of cementitious materials, latex powder, polypropylene fiber, and self-made composite foam materials were designed using an orthogonal approach for testing the macroperformance and microstructure of foamed concrete. The pore structure of foamed concrete was quantitatively analyzed by Image-Pro Plus 6.0 software, and a fitting expression was established between thermal conductivity and the number of pores (1–2 mm). Characteristics of heat transfer inside the foam concrete were simulated and analyzed using COMSOL software, and the transmission path of heat streamline was found to be ″concave-convex form″, illustrating the blocking effect of foam concrete on heat. A thermal insulation engineering model was created using Fluent software to investigate the effects of thermal insulation layer thickness, water gushing heat release, seasonal factors, and other working conditions on the airflow temperature in the roadway before and after the application of foam concrete. The simulation results demonstrate that foam concrete can effectively reduce the airflow temperature in the roadway and weaken the surrounding rock heat dissipation. Additionally, it is found that the decreasing rate of heat dissipation of surrounding rock increases with the increase of insulation layer thickness, proving the engineering applicability of foam concrete for roadway insulation. The research results provide a theoretical basis and practical guidance for heat damage control of deep mining roadway.

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Operation optimization of a refrigeration ventilation system for the deep metal mine

Cited by 7 publications

References 25 publications

Bibliometric analysis and review of mine ventilation literature published between 2010 and 2023

Bibliometric analysis and review of mine ventilation literature published between 2010 and 2023

Preparation of epoxy resin elastic particles and their application in oil well cement

Thermal Insulation Properties and Simulation Analysis of Foam Concrete Regulated by Mechanical and Chemical Foaming

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