Deep Underground Science and Engineering最新文献

{"title":"Numerical simulation of zonal disintegration of surrounding rock in the deep-buried chamber","authors":"Yukai Wang,&nbsp;Xiaoli Liu,&nbsp;Yanlin Xiong","doi":"10.1002/dug2.12017","DOIUrl":"10.1002/dug2.12017","url":null,"abstract":"<p>Zonal disintegration is the phenomenon of cyclical rupture zone and nonrupture zone in the surrounding rock of a deep-buried chamber, which is different from that of a shallow chamber. Based on the finite difference software FLAC^3D, the numerical simulation of surrounding rock with different mechanical parameters was conducted by using the SU model (Bilinear Strain-Softening Ubiquitous-Joint). The influences of buried depth, cohesion, and internal friction angle of surrounding rock on zonal disintegration were analyzed to reveal the influence law. The results show that: (1) after the chamber excavation, multiple rupture zones gradually extend from the chamber surface or adjacent periphery to the deep surrounding rock. In the extension process, a single rupture zone may be forked into two or even multiple rupture zones, which cross each other and form the zonal disintegration zone. (2) Zonal disintegration is affected by both <i>σ</i> (in situ stress) and <i>U</i>_cs (uniaxial compression strength). Smaller <i>U</i>_cs and larger <i>σ</i> will lead to zonal disintegration. (3) The zoning fracture is not obvious in the case of . In the reverse case, zoning fracture appears remarkably in the surrounding rock around the chamber. These results reveal the influence law of zonal disintegration and provide theoretical support for the design of deep-buried chambers.</p>","PeriodicalId":100363,"journal":{"name":"Deep Underground Science and Engineering","volume":"1 2","pages":"174-182"},"PeriodicalIF":0.0,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/dug2.12017","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85775546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the frontiers of deep underground sciences and engineering—China Yunlong Lake Laboratory is striving to be the best","authors":"Lihua Hu,&nbsp;Jianguo Wang,&nbsp;Ali Karrech,&nbsp;Xiaozhao Li,&nbsp;Peng Zhao,&nbsp;Lulu Liu","doi":"10.1002/dug2.12018","DOIUrl":"10.1002/dug2.12018","url":null,"abstract":"<p>This paper introduces the establishment of deep underground infrastructure for science and engineering research. First, the representative deep underground research laboratories and facilities in the world and their functions were summarized and reviewed. Then, the plan and service target of China Yulong Lake Laboratory were proposed for the storage of resources and energy, as well as the sealing of hazardous waste in deep underground space. On this basis, this paper reveals how the facility addresses its key scientific issue on “The law of fluid matter migration in deep underground space” and engineering significance. Finally, the construction progress of the facility components was demonstrated in details. As is hoped, this paper would provide useful reference to the deep underground research community; meanwhile, international collaboration on deep underground research is highly welcome.</p>","PeriodicalId":100363,"journal":{"name":"Deep Underground Science and Engineering","volume":"1 2","pages":"131-137"},"PeriodicalIF":0.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/dug2.12018","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75355193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advancing deep underground research through integration of engineering and science","authors":"Heping Xie,&nbsp;Chunfai Leung,&nbsp;Jianguo Wang,&nbsp;Xiaozhao Li","doi":"10.1002/dug2.12019","DOIUrl":"10.1002/dug2.12019","url":null,"abstract":"<p>Deep underground provides enormous resources for mankind, such as energy, minerals, and water. It can also provide effective solutions for pollutant disposal, such as nuclear waste disposal and CO₂ geosequestration, as well as storage spaces. In addition, deep underground is of great necessity because it provides an ultra-quiet environment for scientific research facilities for advanced experiments in physics, chemistry, and medicine.</p><p>It is evident that underground work can help to improve the quality of human lives. Deep underground science and engineering play an integral part in the plan, design, and construction of underground spaces. Deep underground exploration often faces extreme conditions such as high in-situ stress, high ground temperature, high pore pressure, and severe engineering disturbance. As such, engineers need to investigate the equilibrium of geological environments so as to ensure positive outcomes and avoid unnecessary geohazards.</p><p>In view of the above, high-level research on deep underground science and engineering is clearly necessary. Earth science, environment science, and engineering science issues in the exploitation of deep resources, development of deep energy and utilization of deep space are important research directions for future scientific and technological development globally. The above issues should be addressed within advanced multidisciplinary research fields through the integration of earth science, environment science and engineering.</p><p>It is thus timely that <i>Deep Underground Science and Engineering</i> (DUSE) publishes its inaugural issue in 2022. The mission of DUSE is to report the latest innovation and forefront research achievements in deep underground science and engineering. DUSE aims to gather important revolutionary technologies and theoretical breakthroughs in the field and to provide a high-level academic exchange platform for global researchers in the field of deep underground science and engineering. It provides researchers worldwide the opportunity to keep abreast of the latest developments in the fields of exploration and extraction of geo-resources; energy extraction and storage; underground infrastructures; geoenvironments and waste geological disposal; research and testing space in deep underground; plan, design, and construction technology for underground space and engineering; and other related topics. DUSE integrates earth science, environment science, and engineering science through the multiphysical couplings in deep underground research.</p><p>The four main objectives of this journal are: (a) to grasp the latest development trend and achievements of deep underground science and engineering; (b) to provide a platform for exchanges on prospective plans of deep underground space development; (c) to report the important findings of comprehensive international cooperation research programs on deep underground science and engineering; and (d) to provide a ","PeriodicalId":100363,"journal":{"name":"Deep Underground Science and Engineering","volume":"1 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/dug2.12019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81982699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-performance computing of 3D blasting wave propagation in underground rock cavern by using 4D-LSM on TianHe-3 prototype E class supercomputer","authors":"Meng Fu,&nbsp;Gaofeng Zhao","doi":"10.1002/dug2.12015","DOIUrl":"10.1002/dug2.12015","url":null,"abstract":"<p>Parallel computing assigns the computing model to different processors on different devices and implements it simultaneously. Accordingly, it has broad applications in the numerical simulation of geotechnical engineering and underground engineering, of which models are always large-scale. With parallel computing, the computing time or the memory requirements will be reduced by splitting the original domain of the numerical model into many subdomains, which is thus named as the domain decomposition method. In this study, a cubic and equal volume domain decomposition strategy was utilized to realize the parallel computing on the distributed memory system of four-dimensional lattice spring model (4D-LSM) based on the message passing interface. With a more efficient communication strategy introduced, this study aimed at operating an one-billion-particle model on a supercomputer platform. The preprocessing procedure of the parallelized 4D-LSM was restructured and the particle generation strategy suitable for the supercomputer platform was employed to minimize the time consumption in preprocessing and calculation. On this basis, numerical calculations were performed on TianHe-3 prototype E class supercomputer at the National Supercomputer Center in Tianjin. Two field-scale three-dimensional blasting wave propagation models were carried out, of which the numerical results verify the computing power and the advantage of the parallelized 4D-LSM in the simulation of large-scale three-dimension models. Subsequently, the time complexity and spatial complexity of 4D-LSM and other particle discrete element methods were analyzed.</p>","PeriodicalId":100363,"journal":{"name":"Deep Underground Science and Engineering","volume":"1 1","pages":"87-100"},"PeriodicalIF":0.0,"publicationDate":"2022-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/dug2.12015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91157857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The theory of compression–shear coupled composite wave propagation in rock","authors":"Jianhua Lu,&nbsp;Songlin Xu,&nbsp;Chunhe Miao,&nbsp;Yushan Xie,&nbsp;Liangzhu Yuan,&nbsp;Hao Ma,&nbsp;Meiduo Chen,&nbsp;Pengfei Wang","doi":"10.1002/dug2.12012","DOIUrl":"10.1002/dug2.12012","url":null,"abstract":"<p>The wave velocity analysis of rock medium is the main method used to explore the internal compositions in the crust and research seismic. In this paper, a compression–shear coupled nonlinear elastic constitutive relation is established, which is consistent with the mechanical properties of rock and mineral medium under high pressure. On this basis, numerical solutions of the wave equation and plane wave analytical solutions for the primary and secondary wave velocities are obtained. As is indicated by the comparison with the linear elastic constitutive theory, the results reflect the compression–shear coupling characteristics of the rock, including the stress path effect and the compression–shear coupling wave effect. With different parameter values, the velocity of the secondary wave changes from lower than that of the elastic shear wave, to higher than that of the elastic shear wave. The research results are expected to provide meaningful explanations for the physical mechanisms of the supershear wave and sub-Rayleigh wave, and guidance for the detection of rock and soil composition and the observation of seismic waves.</p>","PeriodicalId":100363,"journal":{"name":"Deep Underground Science and Engineering","volume":"1 1","pages":"77-86"},"PeriodicalIF":0.0,"publicationDate":"2022-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/dug2.12012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85384206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Frictional stability of Longmaxi shale gouges and its implication for deep seismic potential in the southeastern Sichuan Basin","authors":"Fengshou Zhang,&nbsp;Li Cui,&nbsp;Mengke An,&nbsp;Derek Elsworth,&nbsp;Changrong He","doi":"10.1002/dug2.12013","DOIUrl":"10.1002/dug2.12013","url":null,"abstract":"<p>Microearthquakes accompanying shale gas recovery highlight the importance of exploring the frictional and stability properties of shale gouges. Aiming to reveal the influencing factors on fault stability, this paper explores the impact of mineral compositions, effective stress and temperature on the frictional stability of Longmaxi shale gouges in deep reservoirs located in the Luzhou area, southeastern Sichuan Basin. Eleven shear experiments were conducted to define the frictional strength and stability of five shale gouges. The specific experimental conditions were as follows: temperatures: 90–270°C; a confining stress: 95 MPa; and pore fluid pressures: 25–55 MPa. The results show that all five shale gouges generally display high frictional strength with friction coefficients ranging from 0.60 to 0.70 at the aforementioned experiment condition of pressures, and temperatures. Frictional stability is significantly affected by temperature and mineral compositions, but is insensitive to variation in pore fluid pressures. Fault instability is enhanced at higher temperatures (especially at &gt;200°C) and with higher tectosilicate/carbonate contents. The results demonstrate that the combined effect of mineral composition and temperature is particularly important for induced seismicity during hydraulic fracturing in deep shale reservoirs.</p>","PeriodicalId":100363,"journal":{"name":"Deep Underground Science and Engineering","volume":"1 1","pages":"3-14"},"PeriodicalIF":0.0,"publicationDate":"2022-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/dug2.12013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75250902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Additive manufacturing technology in mining engineering research","authors":"Xiaowei Feng,&nbsp;Valter Carvelli","doi":"10.1002/dug2.12014","DOIUrl":"10.1002/dug2.12014","url":null,"abstract":"<p>Nowadays, additive manufacturing, or 3D printing (3DP), though not a new technology in many industrial fields, is still relatively novel in mining engineering. This study explored the application of 3D metal printing, 3D polylactic acid/acrylonitrile butadiene styrene printing, and 3D concrete printing in coal mining. Some examples of physical models established via 3DP technologies were studied in detail, namely, 3DP bolts, 3DP steel ladder beams, 3DP face plates, and 3DP metal arches, which were installed in scaled 3DP concrete prototype models of coal mine excavation. Through the comprehensive laboratory loading tests, the models could simulate the damage scenario highly similar to the real failures. The results show that the 3D printed physical models greatly improved the accuracy and reliability of experiments. On this basis, the conceptual design of a 3DP machine for physical models was proposed, which had the potential of resembling the strata deformation/collapse in natural scenarios. Through assessing the applicability of the additive manufacturing technology in mining engineering, this study aimed to further explore its potential applicability in other engineering contexts such as slope controlling, large underground engineering, and underground space stability.</p>","PeriodicalId":100363,"journal":{"name":"Deep Underground Science and Engineering","volume":"1 1","pages":"15-24"},"PeriodicalIF":0.0,"publicationDate":"2022-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/dug2.12014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75488658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of cooling speed on the physical and mechanical properties of granite in geothermal-related engineering","authors":"Longchuan Deng,&nbsp;Xiaozhao Li,&nbsp;Yun Wu,&nbsp;Fuqing Li,&nbsp;Zhen Huang,&nbsp;Yukun Ji,&nbsp;Chunjiang Zou,&nbsp;Zuxi Liu","doi":"10.1002/dug2.12011","DOIUrl":"10.1002/dug2.12011","url":null,"abstract":"<p>In deep-earth engineering, the high earth temperature can significantly affect the rock's mechanical properties, especially when the rock is cooled during the construction process. Accordingly, whether the cooling speed affects the mechanical and physical properties of rocks is worth to be investigated. The present study explored the influence of the cooling rate on the physical and chemical properties of granite heated at 25–800 °C. The mechanical and physical properties involved in this study included uniaxial compression strength, peak strain, modulus, P-wave velocity, mass and volume, the change of which could reflect the sensitivity of granite to the cooling rate. Acoustic emission (AE) monitoring, microscopic observation, and X-ray diffraction (XRD) are used to analyze the underlying damage mechanism. It is found that more AE signals and large-scale cracks are accounted for based on the b-value method when the specimens are cooled by water. Furthermore, the microscopic observation by polarized light microscopy indicates that the density, opening degree, and connectivity of the cracks under water cooling mode are higher than that under natural cooling mode. In addition, the XRD illustrates that there is no obvious change in mineral content and diffraction angle at different temperatures, which confirms that the change of mechanical properties is not related to the chemical properties. The present conclusion can provide a perspective to assess the damage caused by different cooling methods to hot rocks.</p>","PeriodicalId":100363,"journal":{"name":"Deep Underground Science and Engineering","volume":"1 1","pages":"40-57"},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/dug2.12011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89172097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wear mechanism and life prediction of the ripper in a 9-m-diameter shield machine tunneling project of the Beijing new airport line in a sand-pebble stratum","authors":"Hua Jiang,&nbsp;Jiachen Zhu,&nbsp;Xiaoyan Zhang,&nbsp;Jinxun Zhang,&nbsp;Hongliang Li,&nbsp;Lingfeng Meng","doi":"10.1002/dug2.12010","DOIUrl":"10.1002/dug2.12010","url":null,"abstract":"<p>Tool wear is a noteworthy problem in the process of shield tunneling, and the degree of wear varies with stratum. The sand-pebble strata in Beijing are typically mechanically unstable. However, many subways are buried wholly or partially in sand-pebble strata. Taking the Beijing New Airport line tunneling project as research background, this study evaluated the wear characteristics of the multiconfiguration rippers of a 9-m-diameter spoke-type shield tunneling machine in a sand-pebble stratum. The wear values of five ripper teeth and ripper flanks were analyzed based on field-measured data from the Beijing New Airport line project. As the analytical results show, the wear value generally increases as the installation radius enlarges with the rise of cutting trace length. The wear of the 190-rippers was divided into five categories: pedestal wear, ripper teeth collapse, uniform wear, ripper teeth falling off and ripper flank wear. Uniform wear of the ripper teeth and ripper flank wear were the two abrasion types of the 190-rippers. The teeth of the 155-rippers mostly maintained their cutting capacity under the protection of the 190-rippers. A wear prediction model of linear fitting field data was developed for a 190-ripper face to obtain the optimum shield driving distance in the sand-pebble stratum. The average wear coefficients of the 190-ripper before and after replacement matched well, being 0.045 and 0.066 mm/km, respectively. The results of this study provide a theoretical reference for tool wear prediction in shield construction under similar geological conditions.</p>","PeriodicalId":100363,"journal":{"name":"Deep Underground Science and Engineering","volume":"1 1","pages":"65-76"},"PeriodicalIF":0.0,"publicationDate":"2022-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/dug2.12010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82980377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Front-matter","authors":"","doi":"10.1016/b978-0-12-812702-5.00007-4","DOIUrl":"https://doi.org/10.1016/b978-0-12-812702-5.00007-4","url":null,"abstract":"","PeriodicalId":100363,"journal":{"name":"Deep Underground Science and Engineering","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77822612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}