Article
Construction & Building Technology
Lianpeng Dai, Yishan Pan, Zhonghua Li, Aiwen Wang, Yonghui Xiao, Feiyu Liu, Tianwei Shi, Wenhong Zheng
Summary: Rockbursts are a severe dynamic disaster in mines, globally recognized as one of the most serious incidents. By using stability theory, this study obtained critical indexes for remotely triggered rockbursts, including key stress indicators for surrounding rock softening and fracture occurrence. Through quantitative calculations using typical case histories, the main influencing factors and laws of rockbursts were determined, laying a foundation for the development of quantitative criteria for rockbursts.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2021)
Article
Energy & Fuels
Deqiu Wang, Yun Zheng, Fulian He, Jiayu Song, Jianlong Zhang, Yanhao Wu, Pengpeng Jia, Xiaohui Wang, Baoping Liu, Feifei Wang, Yajiang Zhang, Kai Tao
Summary: Through methods such as on-site research, theoretical analysis, numerical simulation, and industrial experiment, the mechanism of asymmetric floor heave in a gob-side coal roadway affected by mining pressure during the mining of extra-thick coal seams is researched. The main findings are: the roadway floor shows asymmetry, indicating that the floor displacement near the coal pillar side is relatively large; the cause of the asymmetric floor heave is an uneven distribution of vertical stress; and a control scheme of floor leveling + anchor cable support + concrete hardening is proposed.
Article
Green & Sustainable Science & Technology
Shengquan He, Le Gao, Bin Zhao, Xueqiu He, Zhenlei Li, Dazhao Song, Tuo Chen, Yanran Ma, Feng Shen
Summary: This paper adopts the methods of field monitoring, theoretical analysis, and numerical simulation to reveal the deformation and failure law of the gob-side roadway (GSR) in close extra-thick coal seams and the main influencing factors. The study shows that significant deformation occurs in the middle part of the roadway near the solid coal side, the middle and upper parts of the roadway near the coal pillar side, and the roadway floor. The stability of the solid coal side of the roadway is affected by the stress transferred from gangue contact point.
Article
Green & Sustainable Science & Technology
Bin Zhao, Shengquan He, Xueqiu He, Le Gao, Zhenlei Li, Dazhao Song, Feng Shen
Summary: This study investigated the deformation and damage of gob-side roadways in close extra-thick coal seams through numerical simulation and field monitoring. The characteristics of deformation and damage under different reinforcement support methods were compared and analyzed, and the optimal support method was determined. The research results are of great significance for ensuring the stability of similarly endowed roadways.
Article
Geosciences, Multidisciplinary
Xiaoyong Lian, Chen Li, Jun Li, Liang Wu
Summary: In this study, the laws of strata pressure behavior in the nearby goaf road of the Datong mining area were investigated using laboratory tests, theoretical analysis, numerical simulation, and field monitoring. The circular-oval-butterfly failure trend of the surrounding rock and the mine pressure characteristics were analyzed. The findings have practical significance for controlling the stability of the surrounding rock.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Engineering, Multidisciplinary
Cunli Zhu, Jixiong Zhang, Meng Li, Zhiwei He, Yuyao Wang, Yiwen Lan
Summary: The mining of extra-thick coal seams can cause severe deformation and failure of stoping roadways and coal pillars due to factors such as structural evolution of overlying strata and secondary mining disturbance. The study identified distinctive evolutionary features of overlying strata in extra-thick and ordinary coal seams, and analyzed their impact on deformation and failure of section roadways and coal pillars.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Guangchun Liu, Youfeng Zou, Wenzhi Zhang, Junjie Chen
Summary: Mining can cause overburden failure and ground damage, especially when mining shallow buried thick coal seams. The combination of theoretical methods, numerical simulation, and field monitoring reveals the essence of the development and distribution of surface cracks.
Article
Thermodynamics
Hong-Bin LI, Dong-Yin LI, Hao Wang, Zhen-Feng LI, Shen Wang, Chun-Ling Chen
Summary: In this study, experimental and numerical methods were used to investigate the stress evolution and failure mechanism of top coal in an extra-thick coal seam. The results showed differences in the principal stress values at different layers of the top coal.
Article
Geochemistry & Geophysics
Chengchun Xue, Anye Cao, Wenhao Guo, Yaoqi Liu, Songwei Wang, Jingyuan Dong, Yu Gu
Summary: Coal burst is a severe hazard in mining, and understanding its mechanism is crucial for prevention. This study analyzed the energy evolution and mechanism of coal burst using theoretical analysis, numerical simulation, and field measurement methods. The research identified two high energy accumulation areas on the working face roof and established mechanical models for the inclined and strike overhang structures. The study also developed a deep directional hole blasting plan to reduce stress and energy levels and prevent coal bursts in the abnormal stress area of the working face.
Article
Engineering, Mechanical
Wenlong Li, Shihao Tu, Hongsheng Tu, Yu Li, Xun Liu, Kaijun Miao
Summary: This study investigates the ground stress caused by upper goaf residual pillars during contiguous coal seams mining, and focuses on the failure and deformation process of an affected mining roadway. The research utilizes monitoring techniques such as borehole endoscope and laser range finder, and simulates the stress distribution and failure zone evolution using FLAC(3D). The results reveal the causes of large deformation and failure in the mining roadway, and propose a method involving hydraulic fracturing to improve the stress environment.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Jiuyuan Fan, Gang Wang, Huaixing Li, Xinyu Li
Summary: The study analyzed the gas permeability evolution law and partitioned the seepage capacity of bottom coal gas in different stress zones of the working face through true triaxial fluid-solid coupling seepage experiments. The results are significant for strengthening the dynamic disaster prevention and control of bottom coal gas in the horizontal slicing mining face of steeply inclined and extra-thick coal seams.
Article
Geosciences, Multidisciplinary
Xiang He, Shuxin He, Yongbo Cai, Ruiyang Xu, Ke Yang
Summary: The methods of numerical simulation and on-site measurement were used to analyze reasonable coal pillar width and roadway support in an isolated panel of an extra-thick coal seam. It was found that a 6m pillar can meet the load requirements of overlying strata and ensure an undamaged and controllable environment for the roadway. The proposed joint control technology, including asymmetric anchor cables, high intensity anchor cables, and coal pillar grouting, achieved good control effects on-site.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Shiguo Ge, Chongliang Yuan, Qingliang Chang, Yongzhong Wang, Biao Zhang
Summary: In this study, the space-time evolution law of overburden breaking in the tangential horizontal sublevel during fully mechanized mining of extra-thick and steep coal seams was analyzed. The induced impact mechanism of rockbursts was revealed through the establishment of an overburden breaking mechanical model. The research showed that the asymmetry of the roof and floor leads to shear failure of the coal body at the end of the air inlet roadway. A hinge-bearing structure is formed after the roof overburden is broken. Rockbursts occur due to the superposition of dynamic and static load, causing the coal and rock to lose stability and release energy.
Article
Geochemistry & Geophysics
Xingping Lai, Yanbin Yang, Leiming Zhang
Summary: This study investigated the impact of repeated mining on the evolution of overlying strata fissures in steeply inclined and extra thick coal seams, established a physical similarity simulation model, and studied the evolution rules of overlying strata structure using the energy and frequency of microseismic events, revealing precursor characteristics of overburden instability and failure.
Article
Geochemistry & Geophysics
Guoqiang Guo, Zhimin Wang, Shaobo Qu, Hao Li, Yang Zhou, Hanjiang Lyu, Yuan He
Summary: This paper presents numerical simulation and in-situ testing methods to determine the failure range of mining floors in super-thick coal seams. The results show that these methods are suitable for predicting the failure depth and lay a foundation for protecting water sources and realizing green coal mining.
Article
Geochemistry & Geophysics
Zhiqiang Yin, Zhiyu Chen, Jucai Chang, Zuxiang Hu, Haifeng Ma, Ruimin Feng
Article
Engineering, Geological
Ruimin Feng, Shengnan Chen, Steven Bryant
ROCK MECHANICS AND ROCK ENGINEERING
(2020)
Article
Environmental Sciences
Hong Yan, Lipeng Tian, Ruimin Feng, Hani Mitri, Junzhi Chen, Kang He, Yuan Zhang, Shunchao Yang, Zhijun Xu
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Metallurgy & Metallurgical Engineering
Yan Hong, Tian Li-peng, Feng Rui-min, Hani Mitri, Chen Jun-zhi, Zhang Bo
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2020)
Article
Energy & Fuels
Ruimin Feng, Jun Liu, Yongming He, Shengnan Chen
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2020)
Article
Energy & Fuels
Zequan Li, Ruimin Feng, Jun Liu, Rohit Pandey
Summary: This study proposes a simplified pulse decay method with only a single downstream reservoir to replicate in situ conditions for reservoir fluid flow and determine the effective porosity and permeability of core samples accurately. Experimental results demonstrate that the single downstream reservoir PDM can better simulate in situ fluid flow behavior and achieve accurate measurements, extending the application of the transient technique.
ENERGY SCIENCE & ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Chuanming Li, Nan Liu, Wanrong Liu, Ruimin Feng
Summary: The study shows that the presence of water can reduce the elastic limit of rock samples, making the rock more susceptible to deformation and damage. The higher the water content, the smaller the damage energy of the rock samples.
Article
Geochemistry & Geophysics
Chunlei Zhang, Yun Dong, Ruimin Feng, Ningbo Peng, Jihua Zhang, Jingke Wu, Wei Shen
Summary: This study focused on the crack propagation law and failure characteristics of coal-rock combined body (CRCB) with prefabricated fissure. A numerical model was established to simulate the dynamic change process under uniaxial compression and the influence of the inclination angle of the fracture on the fracture expansion and failure characteristics of CRCB.
Article
Geochemistry & Geophysics
Nan Liu, Chuanming Li, Ruimin Feng, Xin Xia, Xiang Gao
Summary: This study explored the influence of moisture content on the mechanical properties of coal and rock burst tendency through multiple measurement techniques. The results showed that with the increase in moisture content, the peak strength and elastic modulus of coal samples decrease while the peak strain increases, and the failure mode of the coal sample shifts towards tensile failure. The findings provide a theoretical reference for studying the fracture instability of moisture-bearing coal and preventing coal and rock burst through the water injection technique.
Article
Energy & Fuels
Ruimin Feng, Jun Liu, Michelle L. Bernhardt-Barry, Shengnan Chen
Summary: The study introduces a novel pressure transient technique to accurately determine the permeability of unconventional gas reservoirs, validated through numerical simulations and experimental tests for high accuracy and efficiency. This provides a valuable tool for understanding in-situ gas flow behavior in tight-structure gas reservoirs.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Chuanming Li, Xin Xia, Ruimin Feng, Xiang Gao, Xiao Chen, Gang Lei, Jiankui Bai, Bochao Nie, Zhengrong Zhang, Baoyou Zhang
Summary: Traditional rock bolt inspection methods are limited and destructive. Non-destructive testing based on stress wave method enables fast and convenient quality detection. By applying axial loads on rock bolts and collecting stress wave signals, the study uses VMD decomposition and Hilbert-Huang signal processing to analyze the characteristics of stress waves. The results show that the stress wave amplitude decreases gradually with increasing axial load, and the method of calculating axial load based on stress wave time-domain amplitude is accurate and reliable.
Article
Geochemistry & Geophysics
Qingfeng Hu, Ximin Cui, Wenkai Liu, Ruimin Feng, Tangjing Ma, Debao Yuan
Summary: A novel time function is proposed in this research to predict surface mining subsidence, and its reliability and improved accuracy were verified through experiments conducted on a coal mine dataset.
Article
Engineering, Multidisciplinary
Chunlei Zhang, Y. P. Chugh, Ruimin Feng, Yong Zhang, Wei Shen, Jingke Wu, Yushun Yang
Summary: This study evaluated the stress redistribution effects of PVCS on PTCS using numerical modeling, finding that mining depth, mining height, and inter-burden rock mass properties affect stress relief angle and coefficient. As the face advanced, stress relief varied in different locations of the PTCS.
CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES
(2021)
Article
Engineering, Geological
Chunlei Zhang, Ruimin Feng, Xibin Zhang, Wei Shen
Summary: This study focused on the floor failure mechanism and crack evolution in the mining of short distance coal seams group in Xinghua coal mine. The results showed that as the upper coal seam advances, the pressure relief angle of roof and floor gradually decreases, and the pressure relief range and floor failure depth increase. The mining-induced fractures in the floor were found to be distributed in the shape of an O ring, with the O-shaped crack circle moving forward as the working face advances.
GEOTECHNICAL AND GEOLOGICAL ENGINEERING
(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)
