Article
Engineering, Multidisciplinary
Mostafa Piri, Reza Mikaeil, Hamid Hashemolhosseini, Alireza Baghbanan, Mohammad Ataei
Summary: This study compared the noise levels generated during drilling of three types of hard rock with three types of drill bit coatings. The results showed that noise level increased with the mechanical parameters of the drilled rock, while it decreased with the hardness of the drill bit. The developed models were found to reasonably accurately predict noise levels in drilling environments based on the rock properties, drill bit hardness, and operational specifications.
Article
Geosciences, Multidisciplinary
Hua Tang, Dong-Cai Liang, Zhen-Jun Wu, Xu Cheng
Summary: This study conducted triaxial compression tests and laboratory drilling tests on intact granite to investigate the rock properties. The numerical changes of drilling parameters were recorded, and the static elastic energy and drilling specific energy of the rock were calculated. An energy analysis method based on the drilling process was proposed, and the total energy was defined as the sum of static elastic energy and dynamic elastic energy. The results showed that the static elastic energy increased with the increase of confining stress, while the drilling specific energy showed the opposite trend. The influence of drilling parameters on total energy was quantified using the dynamic load influence factor. The potential application of the energy analysis method in stress estimation was also discussed through drilling tests.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Huan-xiao Hu, Wei Chen, Chao Deng, Jun-de Yang
Summary: This study found that adding an appropriate amount of prealloyed powder, Cu and 660-Cu, Ni, and Co to the Fe-based formula effectively improved the mechanical properties of the drill bit. Regression models were used to determine the influence of different components on hardness and bending strength.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Li Yang, Tianyi Liu, Weijian Ren, Wenfeng Sun
Summary: The study applied random forest algorithm and fuzzy neural network to address the coupling problem of rate of penetration prediction in drilling engineering. By using K-means to divide data into fuzzy sets, the fuzzy neural network was trained with improved effectiveness.
Article
Chemistry, Multidisciplinary
Ahmed Abdelaal, Salaheldin Elkatatny, Abdulazeez Abdulraheem
Summary: This study developed three models using support vector machines, functional networks, and random forest to predict real-time pore pressure gradient using mechanical and hydraulic drilling parameters. The models exhibited high accuracy in both training and testing, with the random forest model outperforming the others.
Article
Construction & Building Technology
Burcu Gunes, Serkan Karatosun, Oguz Gunes
Summary: This study proposes a drilling-based test methodology for estimating in-situ concrete strength. Experimental data demonstrate that using the drilling-resistance parameter (DR) in combination with rebound hammer (RH) and ultrasonic pulse velocity (UPV) tests provides a robust tool for predicting compressive strength. The support vector regression model shows promising performance even with limited data.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Thermodynamics
Nimeti Doner, Kerem Ciddi
Summary: The study investigates the energy-saving potential of compressed air systems in industrial plants and examines the correlations between system pressure, leakage diameter, noise, and annual leakage cost.
Article
Energy & Fuels
Viswanth Ramba, Senthil Selvaraju, Senthilmurugan Subbiah, Muthukumar Palanisamy, Aman Srivastava
Summary: This paper introduces a novel approach for optimum drilling parameters by optimizing drilling rates, drilling efficiency, and bit hydraulics to reduce drilling costs and increase efficiency. The study also introduces the hydraulic drilling impact (HDI) metric to optimize drilling performance during real-time rotary drilling operations.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Mechanical
Lei Shi, Kai Luo, Jiangang Wang, Ding Feng, Hong Zhang, Xinjian Cao
Summary: The study found that large-scale oxide metallurgical inclusions near the casing caused the casing to crack, while the casing was subjected to stress exceeding its strength limit resulting in fracture. Recommendations include controlling heat treatment processes, optimizing material structure, rigorous testing of casing performance, and establishing a real-time analysis system.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Davor Antoljak, Dalibor Kuhinek, Tomislav Korman, Trpimir Kujundzic
Summary: A method based on extensive laboratory and field measurements was developed to determine the dependence of specific rock cutting energy (SEc) on specific drilling energy (SEd). The results confirmed the strong dependence of the specific rock cutting energy on the specific drilling energy and confirmed that laboratory devices can be used to simulate actual rock cutting and drilling process.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Multidisciplinary
Mehrbod Khoshouei, Raheb Bagherpour
Summary: This paper investigates the relationship between specific energy and rock properties, and presents a method to accurately predict drilling energy through regression analysis. This method is important for real-time adjustment of drilling parameters and identification of non-optimal drilling times.
Article
Energy & Fuels
Ahmed Bani Mustafa, Ahmed K. Abbas, Mortadha Alsaba, Mamoon Alameen
Summary: Predicting the rate of penetration (ROP) is crucial for optimizing drilling operations and reducing costs. Controllable parameters such as weight on bit (WOB), revolutions per minute, and flow rate (FR) have a significant impact on ROP. By optimizing these parameters, drilling performance can be improved leading to cost savings.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Zhiyuan Yang, Yongsheng Liu, Xing Qin, Zijun Dou, Gansheng Yang, Jianguo Lv, Yuanbiao Hu
Summary: This paper proposes an optimization process for drilling parameters using machine learning and data analysis. Compared with traditional models established based on experience or formula derivation, data-driven models with offset well data have higher accuracy. By optimizing inappropriate weight on bit and rotational speed and optimizing flow, drilling efficiency can be further improved.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Jianyu Qin, Siyuan Yin, Naitong Yang, Xuyue Chen, Bo Tian, Liang Xue, Yi Ma
Summary: Composite impact drilling technology is an important method to increase drilling speeds in deep hard formations. A new mechanical specific energy (MSE) model for composite percussion drilling was established, which effectively evaluates the drilling efficiency in real time and meets field operation needs.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Aerospace
Zhen Li, Songmei Yuan, Jiang Ma, Jun Shen, Andre D. L. Batako
Summary: This study considers the impact-separation and vibratory lapping interactions induced by ultrasonic vibration in rotary ultrasonic drilling (RUD), and obtains the conditions to ensure the effectiveness of these interactions. The penetration depth of abrasives and the axial drilling force model for RUD are derived based on indentation fracture theory.
CHINESE JOURNAL OF AERONAUTICS
(2022)
Article
Engineering, Geological
Songyong Liu, Huanhuan Chang, Hongsheng Li, Gang Cheng
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2017)
Article
Construction & Building Technology
H. S. Li, S. Y. Liu, P. P. Xu
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2019)
Article
Acoustics
Hongsheng Li, Songyong Liu, Gang Cheng, Chuwen Guo
SHOCK AND VIBRATION
(2019)
Article
Construction & Building Technology
Songyong Liu, Hongsheng Li, Gang Cheng
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2020)
Article
Construction & Building Technology
Hongsheng Li, Songyong Liu, Jiguang Jia, Fengchao Wang, Chuwen Guo
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2020)
Article
Mechanics
Hongsheng Li, Songyong Liu, Zhencai Zhu, Hao Liu, Deyi Zhang, Chuwen Guo
Summary: The research proposes a rock breaking method using a cutter assisted with hydraulic fracturing to improve the efficiency of cutting hard rocks in roadway tunneling. The experimental results show that the circumferential distribution of holes influences crack propagation and the cutting performance of directionally perforated fractured rock samples is better. This method provides a possibility for rapid excavation of extremely hard and abrasive rock.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Construction & Building Technology
Zhi Ding, Xiao Zhang, Shao-Heng He, Yong-Jie Qi, Cun-Gang Lin
Summary: This study investigates the longitudinal behavior of a shield tunnel by designing and constructing a reduced-size indoor model. The results show that the longitudinal settlement of the tunnel follows a normal distribution, with the maximum settlement occurring at the central ring and increasing linearly with the applied load. Stress concentration typically occurs on the side of the tunnel waist under surcharge, resulting in transverse elliptical deformation of the entire structure.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Lucia Lopez-de-Abajo, Marcos G. Alberti, Jaime C. Galvez
Summary: Assessing and predicting concrete damage is crucial for infrastructure management. This study quantifies gas concentrations in urban tunnels to achieve this goal.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Chao He, Yinghao Cai, Chenqiang Pu, Shunhua Zhou, Honggui Di, Xiaohui Zhang
Summary: This paper investigates the impact of river channel excavation on adjacent metro tunnels and proposes protective measures based on an engineering project in Fuzhou, China. A three-dimensional finite element model is developed to calculate the displacements and distortion of tunnels under different excavation sequences and soil reinforcement measures. Real-time monitoring confirms that the vertical displacements and diametrical distortion of tunnels are primarily caused by the excavation of the river above the tunnels, while horizontal displacements are induced by the excavation next to the tunnels. The study recommends a combination of cement slurry with a portal form and concrete with a plate form for soil reinforcement and tunnel protection.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Yaosheng Liu, Ang Li, Feng Dai, Ruochen Jiang, Yi Liu, Rui Chen
Summary: In this study, a hybrid model based on a multilayer perceptron (MLP) and meta-heuristic algorithms was developed to improve blast performance during tunnel excavation. Precise prediction of post-blasting indicators was important for optimization, and a comparison of meta-heuristic algorithms was conducted to find the most suitable model. The results showed that the developed model effectively reduces overbreak areas and quantitatively analyzes the influence of geological conditions.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Xiang Shen, Yifan Chen, Liqiang Cao, Xiangsheng Chen, Yanbin Fu, Chengyu Hong
Summary: In this paper, a machine learning-based method for predicting the slurry pressure in shield tunnel construction is proposed. By considering the influence of fault fracture zones and setting the formation influence coefficient, the accuracy of the prediction is significantly improved.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Shuying Wang, Zihao Zhou, Xiangcou Zheng, Jiazheng Zhong, Tengyue Zheng, Changhao Qi
Summary: A real-time assessment and monitoring approach based on laser scanning technology and point cloud data analysis was proposed to address the hysteresis in assessing the workability of conditioned soils and the inefficiency in estimating the soil volume flow rate in tunnelling practice. The approach was successfully applied in identifying the workability of conditioned soil and its discharge rate in the EPB shield tunnelling project.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Peng Jiang, Benchao Liu, Yuting Tang, Zhengyu Liu, Yonghao Pang
Summary: This study introduces a novel deep learning-based electrical method that jointly inverses resistivity and chargeability to estimate water-bearing structures and water volume. Compared with traditional linear inversion methods, the proposed method demonstrates superiority in locating and delineating anomalous bodies, reducing solution multiplicity.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Haoyu Mao, Nuwen Xu, Zhong Zhou, Chun Sha, Peiwei Xiao, Biao Li
Summary: The study focuses on the delineation of rock mass damage zones and stability analysis of underground powerhouse in Lianghekou hydropower station. ESG monitoring system is used to monitor the inner micro-fracture activity of surrounding rock mass in real-time. Engineering analogy method is adopted to forecast the deformation period of surrounding rock mass and analyze the variation characteristics of seismic source parameters. The research results provide references for similar deep underground excavation engineering in terms of design and construction.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Junling Qiu, Dedi Liu, Kai Zhao, Jinxing Lai, Xiuling Wang, Zhichao Wang, Tong Liu
Summary: This study focuses on the construction surface cracks of large cross-section tunnels in loess strata of China. The mechanism of surface crack formation is analyzed, and factors such as settlement deformation, construction scheme, and surrounding soil environment are identified as the main contributors. Numerical simulations were conducted to gain a deeper understanding of the influence of factors on surface cracks in loess tunnel construction. Specific measures for prevention and treatment of construction surface cracks are proposed to provide new ideas for surface crack control in loess tunnels.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Ting Shang, Jiaxin Lu, Ying Luo, Song Wang, Zhengyu He, Aobo Wang
Summary: The study reveals significant variations in car-following behavior across different types of tunnels and consecutive sections of the same tunnel. As tunnel length increases, the driving stability of following vehicles decreases, but the level of driving safety risk is not positively correlated with tunnel length. Significant vehicle trajectory oscillation is observed within the inner sections of long and extra-long tunnels, and a significant relationship between the acceleration of following vehicles and the location within the tunnel section is found.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Rusi Zeng, Zhongwei Shen, Jun Luo
Summary: The urban underground complexes (UUCs) in China have been effective in solving urban problems, but users have expressed dissatisfaction with the internal physical environment. Personal characteristics and environmental factors play significant roles in determining users' satisfaction.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Gabriel Lehmann, Heiko Kaeling, Sebastian Hoch, Kurosch Thuro
Summary: Analysing and predicting the advance rate of a tunnel boring machine (TBM) in hard rock is important for tunnelling projects. This study focuses on small-diameter TBMs and their unique characteristics, such as insufficient geotechnical information and special machine designs. A database of 37 projects with 70 geotechnically homogeneous areas is compiled to investigate the performance of small-diameter TBMs. The analysis shows that segment lining TBMs have higher penetration rates, and new approaches for the penetration prediction of pipe jacking machines in hard rock are proposed.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Ting Ren, Ming Qiao, Jon Roberts, Jennifer Hines, Yang-Wai Chow, Wei Zong, Adrian Sugden, Mark Shepherd, Matthew Farrelly, Gareth Kennedy, Faisal Hai, Willy Susilo
Summary: Long-term exposure to coal and silica dust during underground tunnelling operations is a growing concern. To bridge the gap between knowledge in dust exposure monitoring and frontline workers, a virtual reality educational tool was developed to visualize ventilation and dust flow characteristics. This tool allows workers to better understand decision-making and best practices for dust controls.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Dong Lin, Zhipeng Zhou, Miaocheng Weng, Wout Broere, Jianqiang Cui
Summary: Metro systems play a vital role in the transportation, economic, environmental and social aspects of cities. The uncertainties in construction, passenger comfort and safety, as well as efficiency and reliability of the metro system, have been widely studied. Metro systems influence urban development and have a positive impact on housing prices, public health, and environmental quality. Further research is needed to fill the research gaps and make recommendations for future studies.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
Article
Construction & Building Technology
Wei Yu, Bo Wang, Xin Zi, Jie Dong
Summary: In this study, a whole-process analytical theory for the coupled deformation of deep circular tunnel surrounding rock and prestressed yielding anchor bolt (cable) system is derived and validated through numerical simulations. The results show that anchor bolts (cables) can significantly reduce the convergence of surrounding rock, and factors such as support timing and anchor cable length have important effects on the support effectiveness.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2024)
