Article
Green & Sustainable Science & Technology
Ioannis E. Zevgolis, Alexandros I. Theocharis, Alexandros V. Deliveris, Nikolaos C. Koukouzas
Summary: This study quantifies the impact of groundwater on the stability of underground openings in shallow coal mines and assesses the potential for sinkhole formation. By analyzing specific stratigraphy and geological conditions, the study found that the instability of the openings can lead to sinkhole formation. The safety of the openings was analyzed based on the accumulation of infiltrated rainwater and the rise of the groundwater table, with the phreatic line approach being the most conservative.
Article
Construction & Building Technology
Bin Tang, Mathias Yeboah, Hua Cheng, Yongzhi Tang, Zhishu Yao, Chuanbing Wang, Chuanxin Rong, Zhenhua Wang, Quansheng Liu
Summary: This study investigated the excavation disturbance behaviors and support design of TBM-excavated roadway in an underground coal mine. By comparing two different support schemes through numerical simulation and monitoring, it was found that installing rockbolts perpendicularly to rock surface can better satisfy the requirements of TBM tunnelling in weak grounds of coal mine roadways.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2021)
Article
Management
Peter Nesbitt, Lewis R. Blake, Patricio Lamas, Marcos Goycoolea, Bernardo K. Pagnoncelli, Alexandra Newman, Andrea Brickey
Summary: Underground mine schedules aim to determine start dates for ore extraction activities, with strategic schedules addressing coarse-level start dates and tactical schedules accounting for day-to-day operational variability to maximize net present value.
EUROPEAN JOURNAL OF OPERATIONAL RESEARCH
(2021)
Article
Mining & Mineral Processing
Kevin Andrews, Steve Keim
Summary: Crossing beneath streams or rivers in underground mining scenarios can be necessary but requires a multi-disciplinary approach for thorough assessment to avoid safety and cost issues.
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Studies
Zhenqi Hu, Gensheng Li, Jianan Xia, Zhanjie Feng, Jiazheng Han, Zanxu Chen, Wenjuan Wang, Guodong Li
Summary: Mining-induced subsidence leads to farmland damage and ponding formation. Traditional mining and reclamation (TMR) has low reclamation rate and long-term farmland abandonment. In this study, two critical width models were proposed to protect farmland and increase the reclamation rate. Concurrent mining and reclamation (CMR) and TMR were simulated, and the advantages of CMR were discussed. The results show that CMR can prolong farmland life, increase reclamation rate and farmland area, and has long-term social and ecological benefits.
Article
Green & Sustainable Science & Technology
Gensheng Li, Zhenqi Hu, Pengyu Li, Dongzhu Yuan, Zhanjie Feng, Wenjuan Wang, Yaokun Fu
Summary: The integrated planning of mining and reclamation is important for reducing land degradation and addressing conflicts. This study adopted concurrent mining and reclamation technologies to divide the planning into four key steps and discussed the impacts of mining on reclamation. The requirements of reclamation for mining were also discussed. The results showed that integrated planning can reduce damage, reclaim land in a timely manner, and alleviate conflicts.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Geosciences, Multidisciplinary
Jan Lenart, Kristyna Schuchova, Martin Kasing, Lukas Falteisek, Sarka Cimalova, Jana Bila, Monika Licbinska, Jiri Kupka
Summary: This study investigates a typical abandoned underground slate mine in the Bohemian Massif, describing its components and relationships. The results highlight the mine's importance as a semi-natural ecosystem and its vulnerability. The study provides a conceptual model for understanding the mine and emphasizes the need for interdisciplinary approaches in environmental assessment, tourist management, and natural protection or remediation.
Article
Metallurgy & Metallurgical Engineering
Aleksandar D. Bugarski, Shawn Vanderslice, Jon A. Hummer, Teresa Barone, Steven E. Mischler, Shad Peters, Steve Cochrane, Jared Winkler
Summary: This study investigates submicron aerosols in an underground coal mine, specifically focusing on the continuous miner section and longwall section. The findings suggest that the current control strategies and technologies are effective in reducing exposures to diesel aerosols, but further reductions can be achieved by curbing emissions from high-emitting vehicles.
MINING METALLURGY & EXPLORATION
(2022)
Article
Engineering, Geological
V. L. Silva, M. G. A. Gardoni, K. C. Pimentel
Summary: Geotextile tubes are commonly used in hydraulic and marine applications, as well as for dewatering sludge and dredged materials. This article presents numerical results from modeling a geotextile tube using Abaqus software, showing that a smaller elastic modulus results in greater strain and membrane elements effectively simulate the mechanical behavior of geotextile tubes.
GEOSYNTHETICS INTERNATIONAL
(2021)
Article
Engineering, Industrial
Carole James, Aaron Bezzina, Md Mijanur Rahman
Summary: The study found that the task rotation schedule had little impact on musculoskeletal discomfort, highlighting the challenges of implementing it in an underground coal mine. Further research is needed to understand the effectiveness and complexity of task rotation schedules in this environment.
APPLIED ERGONOMICS
(2021)
Review
Environmental Studies
Prosper Chimunhu, Erkan Topal, Ajak Duany Ajak, Waqar Asad
Summary: Production planning and scheduling optimization for underground mining operations has attracted significant attention. However, standalone mathematical optimization models are limited in their coverage in the era of big data. This paper discusses opportunities for using data analytics and machine learning to improve production planning and scheduling in underground mining.
Article
Chemistry, Analytical
Pawel Stefaniak, Maria Stachowiak, Wioletta Koperska, Artur Skoczylas, Pawel Sliwinski
Summary: Systems using automatic speech recognition are gaining popularity in the industry, but accuracy remains a challenge. This article describes an attempt to use ASR in the underground mining industry, focusing on the impact of environment, specialized vocabulary, and the learning curve.
Article
Engineering, Geological
Kui Wu, Zhushan Shao, Yalong Jiang, Nannan Zhao, Su Qin, Zhaofei Chu
Summary: This study aims to establish an analytical model for determining the support stiffness of circumferential yielding lining, taking into account the shotcrete hardening property. The deformation process of circumferential yielding lining is divided into three stages based on the mechanical characteristic of the yielding elements. Analytical solutions for the time-dependent lining stiffness and the corresponding equation for the lining pressure are proposed. The proposed model is effectively applied in a case study and provides insights and recommendations for the design of circumferential yielding lining.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Environmental Sciences
Xin Yang, Xiaohu Lin, Wanqiang Yao, Hongwei Ma, Junliang Zheng, Bolin Ma
Summary: This paper proposes a robust LiDAR SLAM method that detects and compensates for degenerated scenes by integrating LiDAR and IMU data, and implements a globally consistent LiDAR SLAM. Experimental results show that the proposed method achieves better robustness than LeGO-LOAM and LIO-SAM. The absolute position RMSE is only 0.161 m, providing an important reference for underground autonomous localization and navigation in intelligent mining.
Article
Energy & Fuels
Jun Wang, Derek B. Apel, Huawei Xu, Chong Wei
Summary: The performance of yielding rockbolts during rockbursts with actual seismic loading is assessed using numerical modeling methods. The results show that the D-bolt effectively controls and mitigates rockburst damage during weak rockbursts, while the Roofex is not effective in limiting rock movement and restraining large deformation. The resin-grouted rebar bolt can maintain high axial force levels during rockbursts but is prone to breaking during dynamic shocks. Additional support with cable bolts significantly reduces rockburst damage severity. The study highlights the effectiveness of numerical modeling in assessing yielding rockbolt performance and provides insights for improving rock support designs in burst-prone grounds.
INTERNATIONAL JOURNAL OF COAL SCIENCE & TECHNOLOGY
(2022)
Article
Metallurgy & Metallurgical Engineering
Chong Wei, Derek Apel, Tatyana Katsaga
Summary: This study presents an effective determination process of interface microstructural parameters and modeling mechanical interactions between different geomaterials with frictional-bonded interfaces using the coupled finite-difference and discrete-element method. Direct shear tests and parametric studies were conducted to validate the feasibility and rationality of the coupled FD-DE method in simulating specimens with frictional-bonded interfaces or joints.
MINING METALLURGY & EXPLORATION
(2022)
Review
Energy & Fuels
Krzysztof Skrzypkowski, Rene Gomez, Krzysztof Zagorski, Anna Zagorska, Roberto Gomez-Espina
Summary: This paper reviews and summarizes the underground exploitation of world-class base metal deposits based on Poland and Chilean experiences, analyzing the main geological and mining parameters. In Poland, mainly room and pillar methods are used in massive deposits, requiring back-filling for stability. In Chile, the block caving method is commonly used, generating a large subsidence zone. Different underground methods and strategies can be effectively applied in massive deposits.
Article
Chemistry, Multidisciplinary
Jianhang Chen, Shiji Wang, Guoxin Sun, Han Zhang, Krzysztof Skrzypkowski, Krzysztof Zagorski, Anna Zagorska
Summary: The embedment length (EL) of full-grouting rock bolts is crucial to their reinforcement performance. This paper used numerical modeling to investigate the influence of EL on reinforcement and found that EL has a significant impact. A linear relationship between the largest anchorage force and EL was observed, allowing for the prediction of critical EL using linear regression analysis. The study also revealed that the type of rock bolt is important, as metal rock bolts showed greater initial stiffness than FRP rock bolts.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Faham Tahmasebinia, Adam Yang, Patrick Feghali, Krzysztof Skrzypkowski
Summary: Ground support systems, such as cable bolts, are used to manage and mitigate rock bursts in deep mines and excavations with high in-situ stresses. This study develops a numerical model to analyze the influence of key parameters on the displacement, shear force, and energy absorption capacity of cable bolts under dynamic loads. The results show that increasing bolt diameter and steel yield strength increases the shear force resisted and bolt displacement. Additionally, increasing the mass and velocity of the dynamic load increases the energy absorbed by the cable bolt.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Faham Tahmasebinia, Adam Yang, Patrick Feghali, Krzysztof Skrzypkowski
Summary: Rock bursts are caused by high stresses and faults in the deep geological profile and require various rock and face supports in deep mining excavations. This study focused on the shearing impact of static loads on cable bolts, an important structural support mechanism. The results showed a positive correlation between bolt diameter, yield strength, and maximum force and displacement.
APPLIED SCIENCES-BASEL
(2023)
Article
Energy & Fuels
Gabriel Freire, Guillermo Ramirez, Rene Gomez, Krzysztof Skrzypkowski, Krzysztof Zagorski
Summary: In this study, the performance of an electro-mechanical powertrain for underground-loader equipment was analyzed using field data. The proposed electric model consumed 60.5% less energy than the diesel loader under the same operational conditions. This methodology provides a valuable tool for evaluating the energy efficiency of electric loaders based on current operational data.
Article
Chemistry, Physical
Szymon Kurpiel, Krzysztof Zagorski, Jacek Cieslik, Krzysztof Skrzypkowski
Summary: This paper investigates the deformation and surface topography parameters of thin-walled elements during milling of titanium alloy. The GOM measurement method was used to measure the deformations and selected surface parameters. It was found that there were differences in deformations and surface parameters for different machining methods.
Article
Chemistry, Multidisciplinary
Faham Tahmasebinia, Amir Abbas Jabbari, Krzysztof Skrzypkowski
Summary: Three-dimensional (3D) printing has gained popularity in the construction industry and is an integral part of Construction Industry 4.0. This paper investigates the effectiveness of 3D-printed structures using the finite element method (FEM) and concludes that they have similar strength to traditional structures. FEM provides a reasonable analysis of the performance of these structures.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Ahsan Waqar, Krzysztof Skrzypkowski, Hamad Almujibah, Krzysztof Zagorski, Muhammad Basit Khan, Anna Zagorska, Omrane Benjeddou
Summary: The objective of this study is to identify the key factors that contribute to the successful implementation of cloud computing in small-scale construction projects in Malaysia. A mixed-methods approach was utilized, involving a literature review, expert interviews, and surveys with participants. The findings indicate that cost, quality, and time management; planning success; organizational success; and communication and coordination are crucial for project execution. The integration of cloud computing technology has the potential to enhance project efficiency and foster sustainable development in the construction sector.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Ahsan Waqar, Muhammad Basit Khan, Nasir Shafiq, Krzysztof Skrzypkowski, Krzysztof Zagorski, Anna Zagorska
Summary: This study aims to identify the critical implementation barriers of the Internet of Things that affect small construction projects in Malaysia. By conducting a pilot survey and applying exploratory factor analysis and structural equation modeling, the researchers identified 16 barriers divided into 5 formative constructs. The study found that databases and technology are the most critical barriers, while management barriers have the least impact. The theoretical and managerial implications of the study provide guidance for future researchers and construction workers to improve the implementation of the Internet of Things in small construction projects in Malaysia.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Ahsan Waqar, Idris Othman, Krzysztof Skrzypkowski, Ali Shaan Manzoor Ghumman
Summary: This study explores the determinants of success for superhydrophobic coatings in the oil and gas construction industry in Malaysia. Through quantitative analysis, a model was developed including four constructs: performance success, sustainability construct, oil spill management, and safety and economic success. The study confirms a strong relationship between these constructs and the critical success of superhydrophobic coatings in the industry.
Article
Ecology
Yajun Wang, Huihuan Ma, Li Han, Xiuyan Xu, Krzysztof Skrzypkowski, Marc Bascompta
Summary: This study details a flexible explosion suppression method based on buffer energy absorption. The explosion suppression system includes an explosive characteristic monitoring system, an explosion suppression agent system, and an explosion suppression airbag. Experiments were conducted in a 20.5 m-long pipe with an inner diameter of 180 mm to compare flame propagation velocity and maximum overpressure values. The results show that the explosion suppression device can completely suppress flame wave propagation and the airbag has an energy absorption effect.
Article
Chemistry, Analytical
Szymon Kurpiel, Krzysztof Zagorski, Jacek Cieslik, Krzysztof Skrzypkowski, Witold Brostow
Summary: Thin-walled structures are widely used to reduce weight and increase rigidity, and milling is a popular method for machining complex-shaped components. However, milling can lead to undesirable effects such as vibrations that affect surface quality and tool wear. Machining thin-walled structures is further complicated by the reduced workpiece rigidity.
Article
Chemistry, Physical
Jianhang Chen, Shiji Wang, Yiqiang Zhao, Lei Liu, Krzysztof Skrzypkowski, Krzysztof Zagorski, Anna Zagorska
Summary: The grout annulus (GA) has a significant impact on the tensile performance of rockbolts. This paper used modified cable elements in FLAC3D to quantitatively study the effect of the GA on the tensile performance of rockbolts. The results showed that increasing the shear strength of the GA from 3.2 MPa to 6.4 MPa led to an increase in the peak force of rockbolts from 247 kN to 425 kN.
Article
Chemistry, Physical
Szymon Kurpiel, Krzysztof Zagorski, Jacek Cieslik, Krzysztof Skrzypkowski, Sarken Kapayeva, Maral Torekhanova
Summary: Thin-walled structures are widely used in various industries for weight reduction and cost reduction. Milling is commonly used for machining such elements to achieve almost any desired shape. However, milling thin-walled structures can lead to undesirable phenomena such as wall deformation due to reduced stiffness. Therefore, dimensional and shape accuracy control is necessary using various measuring instruments. The development of newer measuring methods, such as optical methods, is being observed. The present study compares the results obtained from a 3D optical scanner with a coordinate measuring machine, showing a maximum discrepancy of around 8% between the two methods.
