Engineering Geology最新文献

{"title":"Cultural activity and impact of extreme weather events revealed by ambient seismic noise and perspective on quick clay failure monitoring in Oslo, Norway","authors":"Charlotte Bruland ,&nbsp;Anna Maria Dichiarante ,&nbsp;Andreas Köhler ,&nbsp;Volker Oye ,&nbsp;Ivan Van Bever ,&nbsp;Eric Larose","doi":"10.1016/j.enggeo.2025.107936","DOIUrl":"10.1016/j.enggeo.2025.107936","url":null,"abstract":"<div><div>The study of urban seismic noise offers various approaches to monitor cities, from source identification to structural investigations. We demonstrate its potential to monitor cultural activity and quick clay failure in Oslo, Norway using low-cost seismic sensors. We identify train passages, a rock concert, construction blasts, local earthquakes and a meteor. To retrieve seismic velocity variations in the near subsurface, we apply seismic interferometry to three years of urban noise (1–4 Hz) recorded at four sensors, two in a quick clay risk area. Despite urban noise variability, we obtain stable noise correlation functions using 1-day-stacks. The extracted velocity variations reveal changes in the ground due to freezing and thawing as well as due to pore pressure variations related to snowmelt and rainfall. Along with anti-correlation of velocity variations and pore pressure, we observe hysteresis associated to the soil’s water retention under different moisture conditions, which could provide insights into potential landslide hazard. A sharp velocity drop accompanying the heavy rainfall associated with an extreme weather event is observed. All these observations give us insights to what subsurface changes can be resolved and expected over longer time periods, which will allow us to identify unusual and permanent changes, e.g., related to quick clay. Theoretical dispersion curve analysis shows that lowering the velocity in a section of the sedimentary layer containing quick clay reduces surface wave velocities within the frequency range of interest. These results suggest that measuring velocity variations at our study site has the potential to detect quick clay instabilities.</div></div>","PeriodicalId":11567,"journal":{"name":"Engineering Geology","volume":"347 ","pages":"Article 107936"},"PeriodicalIF":6.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143199011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical study on the stiffening properties of scour protection around monopiles for Offshore Wind Turbines","authors":"Carlos Menéndez-Vicente ,&nbsp;Susana López-Querol ,&nbsp;John M. Harris ,&nbsp;Nicholas S. Tavouktsoglou","doi":"10.1016/j.enggeo.2024.107835","DOIUrl":"10.1016/j.enggeo.2024.107835","url":null,"abstract":"<div><div>An active marine seabed causing scour around monopile foundations has to be addressed as a geological hazard. These structures are often protected with rock armour to prevent foundation failure. However, scour protection also increases the confining pressure and embedment length, providing additional stiffness to the soil–pile system. This study focuses on the stiffening effect of scour protection to optimise foundation design. A parametric analysis of the dimensions and materials of scour protection is carried out with more than 100 simulations to assess the stiffening effect of scour protection. Therefore, small-diameter and large-diameter monopiles are investigated. Numerical analysis with the Finite Element method is conducted to estimate the natural frequencies and the static capacity through moment and lateral load (<span><math><mrow><mi>M</mi><mo>−</mo><mi>H</mi></mrow></math></span>) curves and the Load Utilisation method. These methods, which are new to the study of scour protection, are proposed for the quantification and assessment of scour protection in foundation design. The results show that rock fill restores the initial foundation conditions independently of the pile dimensions. While for small-diameter monopiles, scour protection fulfils its double purpose of preventing scour and providing stiffness to the foundation, for large-diameter monopiles the contribution to the stiffness is limited and should only be considered for heavy rock armour and significant scour protection heights. The parametric analysis indicates that a thicker and heavier scour protection increases the static capacity by 10%, whereas the width or a densification through sand accretion have negligible effects (<span><math><mo>&lt;</mo></math></span>1%). The <span><math><mrow><mi>M</mi><mo>−</mo><mi>H</mi></mrow></math></span> curves and the Load Utilisation method have shown to be effective in assessing the static capacity of monopiles supporting Offshore Wind Turbines.</div></div>","PeriodicalId":11567,"journal":{"name":"Engineering Geology","volume":"345 ","pages":"Article 107835"},"PeriodicalIF":6.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the relationship between seismic noise signals and modeled river flow data: A case study from Sicily, Italy","authors":"Alfio Marco Borzì ,&nbsp;Federico Castiglione ,&nbsp;Mario Valerio Gangemi ,&nbsp;Andrea Cannata ,&nbsp;Luca Cavallaro ,&nbsp;Enrico Foti ,&nbsp;Rosaria Ester Musumeci ,&nbsp;Francesco Panzera","doi":"10.1016/j.enggeo.2024.107872","DOIUrl":"10.1016/j.enggeo.2024.107872","url":null,"abstract":"<div><div>In this work, we analyze and integrate the seismic data recorded by one seismic station installed close to the Cimia River (Gela, Sicily), the rainfall data recorded by the meteorological stations installed within the Gela hydrological basin, and the flow data estimated using a rainfall-runoff model. We take into account two meteorological events characterized by different features in terms of duration, total rainfall, rainfall intensity, and flow rate: an impulsive short-term thunderstorm that occurred on 13th October 2022, and a long-duration perturbation that took place in February 2023 during the quasi-Medicane Helios. In particular, we explore the relationships between seismic noise (in terms of spectral content, root mean square amplitude time series, and polarization features) and meteorological and hydrological parameters (specifically, rain rate, total rainfall, and net rainfall within the basin, as well as the flow rate at a relevant cross-section along the river). The results show that only the long-duration event (i.e., Helios) leaves a mark on the seismic signals and that the time lag obtained between the root mean square amplitude and rain rate time series matches with the catchment's concentration time. These findings show a clear correlation between seismic noise and hydrological parameters, allowing us to retrieve information about flood events using seismic data when traditional river discharge data are unavailable.</div></div>","PeriodicalId":11567,"journal":{"name":"Engineering Geology","volume":"345 ","pages":"Article 107872"},"PeriodicalIF":6.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"3D high-density ambient noise imaging of the Nankou-Sunhe buried active fault in Beijing","authors":"Xu Liu ,&nbsp;Ketong Hu ,&nbsp;Rongyi Qian ,&nbsp;Shuai Zhao ,&nbsp;Jun Zhang ,&nbsp;Jianyu Ling ,&nbsp;Zhenning Ma ,&nbsp;Zhiyong Wu ,&nbsp;Yinhu Huang ,&nbsp;Yongqi Meng ,&nbsp;Zhanfei Li ,&nbsp;Dongya Zhang","doi":"10.1016/j.enggeo.2024.107862","DOIUrl":"10.1016/j.enggeo.2024.107862","url":null,"abstract":"<div><div>The Nankou-Sunhe fault (NSF) is a vital buried active fault within the Beijing Plain. Investigating the detailed structure of the NSF and the sedimentary structures on both sides is pivotal for urban engineering projects to mitigate geological hazards. Three-dimensional (3D) seismic exploration can provide comprehensive and precise information about subsurface structures, aiding in the identification and characterisation of the spatial geometry, extensional direction, and features of sedimentary structures on both sides of the fault. In this study, we conducted a 3D high-density ambient noise seismic survey covering approximately 40 km² around the NSF. Utilising the Multichannel Analysis of Passive Surface waves (MAPS), we obtained fundamental mode Rayleigh wave phase velocity diagrams in the 0.5–4 Hz range, subsequently inverting them to reveal a 3D shear (<em>S</em>)-wave velocity model extending to a depth of 1 km. The model shows lower velocities in the southwestern region, with shallow S-wave velocities of approximately 400–600 m/s and deep-seated velocities ranging from 1800 to 2000 m/s. The northeastern region is characterised by higher velocities, with shallow S-wave velocities of approximately 900–1200 m/s and deeper velocities reaching 3000–3400 m/s. The NSF is a high angle (50°-70°) normal fault striking northeast and dipping towards the southwest; the dip angle exhibits local variation. An S-wave velocity of 1 km/s was used to estimate sediment thickness on both sides of the fault. The MaChikou Sag (MCKS) on the southwest side of the NSF is approximately 400–600 m thick, while the northeastern JingXi High (JXH) is less than 200 m thick. The NSF was positively correlated with the bedrock surface (1 km/s isovelocity). Moreover, this study ascertained that by employing MAPS with a 200 m station spacing within a complex and noisy urban environment, one can extract accurate fundamental-mode Rayleigh waves, allowing for the subsequent construction of a 3D high-resolution S-wave velocity model.</div></div>","PeriodicalId":11567,"journal":{"name":"Engineering Geology","volume":"345 ","pages":"Article 107862"},"PeriodicalIF":6.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of directionality influence on non-Darcian flow in single rock fractures","authors":"Zihao Sun ,&nbsp;Liangchao Zou ,&nbsp;Jia-Qing Zhou ,&nbsp;Liangqing Wang ,&nbsp;Yue Zhu ,&nbsp;Xunwan Yao ,&nbsp;Rui Ke","doi":"10.1016/j.enggeo.2025.107947","DOIUrl":"10.1016/j.enggeo.2025.107947","url":null,"abstract":"<div><div>Significant differences in non-Darcian flow between different directions (i.e., forward and reverse flow directions) exist in rock fractures, and understanding of these differences holds crucial implications for evaluating and characterizing flow within fractured rocks. This study proposes a directional aperture parameter to quantitatively characterize the differences in flow between different directions. Firstly, a directional aperture parameter capable of quantitatively distinguishing geometric information of fractures in different directions is proposed. Then, 900 sets of linear and nonlinear flow numerical experiments based on 90 rough fractures are conducted. The results reveal that the differences between forward and reverse flow are shown in the nonlinear flow regime, with equal viscous permeability but significant differences in inertial permeability between the two flow directions. The main reason for the differences lies in the variations of aperture along the two flow directions. A dual-parameter model characterizing the inertial permeability is established by using the directional aperture parameter based on the numerical experimental data from the 90 rough fractures. The critical condition where the significant differences between the forward and reverse flow starting to appear are identified. The quantitative characterization of differences in three-dimensional rough fractures between different directional flows is discussed. The findings from this study could be helpful in advancing our understanding of fluid flow behaviors in natural rock fractures.</div></div>","PeriodicalId":11567,"journal":{"name":"Engineering Geology","volume":"347 ","pages":"Article 107947"},"PeriodicalIF":6.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143198596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical investigation on the response of ground-reinforced embankments under repeated impact","authors":"Xin Li ,&nbsp;Zhiwei Gao ,&nbsp;Liang Lu","doi":"10.1016/j.enggeo.2024.107875","DOIUrl":"10.1016/j.enggeo.2024.107875","url":null,"abstract":"<div><div>Ground-reinforced embankment (GRE) is an effective and environmentally friendly technique of rockfall intervention. These earth structures are built with layers of compacted soil alternated with geotextiles, geogrills, metallic wire stripes or nets. GREs are designed to sustain repeated rock impact during their service life, but there is very little experimental or numerical research on the GRE response under such impact conditions. A comprehensive numerical investigation of GRE response under repeated rock impact is carried out. The GRE is built with several layers of sand wrapped by geosynthetics. An advanced elastoplastic constitutive model for sand is adopted. For the GREs built with dense and loose sand, most of the impact energy is dissipated by plastic deformation in the soil. Sand density has a dominant influence on the deformation and failure mechanism of GREs. During repeated impacts, elements near the impact location fail with increasing mean effective stress and Mises stress in dense sand. However, soil elements reach failure as the mean effective stress decreases and the Mises stress increases. There is much less deformation accumulation in GRE when the void ratio is lower as the soil has higher stiffness and shear strength. After multiple impacts, shear bands form in loose sand but strain localisation mainly occurs at the impact point for dense sand.</div></div>","PeriodicalId":11567,"journal":{"name":"Engineering Geology","volume":"345 ","pages":"Article 107875"},"PeriodicalIF":6.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Towards automatic delineation of landslide source and runout","authors":"Kushanav Bhuyan ,&nbsp;Kamal Rana ,&nbsp;Ugur Ozturk ,&nbsp;Lorenzo Nava ,&nbsp;Ascanio Rosi ,&nbsp;Sansar Raj Meena ,&nbsp;Xuanmei Fan ,&nbsp;Mario Floris ,&nbsp;Cees van Westen ,&nbsp;Filippo Catani","doi":"10.1016/j.enggeo.2024.107866","DOIUrl":"10.1016/j.enggeo.2024.107866","url":null,"abstract":"<div><div>Mapping landslide-depleted source areas is pivotal for refining predictive models and volume estimations, yet these critical regions are often conflated with landslide runouts, leading to sub-optimal assessments. The source (or scarp) areas are typically the regions where the actual failure occurs, providing crucial information on the initiation mechanisms and the nature of landslide propagation. Catering to this objective, we built a method based on a landslide’s topology and morphological information to delineate the source and runout margins. We develop and test this method in geomorphologically distinct regions such as Dominica, Turkey, Italy, Nepal, and Japan (Niigata) to showcase the model’s robust adaptive capacity. The model can demarcate the source and runout zones from landslide planforms found in inventories with accuracy deviations under 15%–20%. While distinguishing landslide source and runout areas, the model also considers triggering information and movement types. We also deploy the model in Chile, Japan (Hokkaido), Colombia, Papua New Guinea, and China. In these new regions, we found the mean area of the scarp to be consistently under 30% of the total landslide area. We additionally showcased the application of our model to the area–volume scaling of the coseismic landslides triggered by the 2018 Hokkaido Eastern Iburi Earthquake (<span><math><msub><mrow><mi>M</mi></mrow><mrow><mi>W</mi></mrow></msub></math></span> 6.6) in Japan. Our analysis revealed that area–volume fitting using the landslide source areas instead of the total landslide planforms or polygons improves the linear fit from R<span><math><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup></math></span>=0.49 to R<span><math><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup></math></span>=0.81. Our work could improve diverse landslide analysis, such as hazard and runout models, and facilitate a deeper understanding of landslide behaviour.</div></div>","PeriodicalId":11567,"journal":{"name":"Engineering Geology","volume":"345 ","pages":"Article 107866"},"PeriodicalIF":6.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A unified characterization of small-strain shear modulus of sands under triaxial compression stress states","authors":"Yutang Chen ,&nbsp;Jun Yang","doi":"10.1016/j.enggeo.2024.107863","DOIUrl":"10.1016/j.enggeo.2024.107863","url":null,"abstract":"<div><div>In slopes and embankments, soil elements are often anisotropically loaded and the sustained stress ratio <em>SR</em> may vary a lot. The understanding of the influence of <em>SR</em> on the small-strain shear modulus <em>G</em>_<em>0</em> of sands prior to failure is a practical concern that remains inadequately understood in the existing literature. This study aims to address this knowledge gap through a meticulously designed experimental program. The testing program encompasses three quartz sands with differing particle shapes and a diverse set of principal stress ratios produced via drained triaxial compression. By employing bender elements embedded within the apparatus, elastic shear waves are generated, enabling the measurement of <em>G</em>_<em>0</em> from isotropic stress states to anisotropic stress states. A careful evaluation and comparison of existing anisotropic <em>G</em>_<em>0</em> models in the literature is also conducted, and the potential limitations when subjected to elevated <em>SR</em> levels are noted. A new, unified model is proposed to effectively characterize <em>G</em>_<em>0</em> of different sands subjected to a wide range of triaxial compression states and it is validated using literature data.</div></div>","PeriodicalId":11567,"journal":{"name":"Engineering Geology","volume":"345 ","pages":"Article 107863"},"PeriodicalIF":6.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Water reactive polyurethane grouting for deep vadose zone contaminant immobilization","authors":"Jinhu Song ,&nbsp;Drew W. Johnson ,&nbsp;Jie Huang ,&nbsp;Sarah Saslow","doi":"10.1016/j.enggeo.2025.107945","DOIUrl":"10.1016/j.enggeo.2025.107945","url":null,"abstract":"<div><div>Contaminants in the deep vadose zone (DVZ) pose a long-term threat to groundwater, human health, and the environment. Polyurethane grouting is a type of chemical grouting that is potentially advantageous in immobilizing contaminants in DVZs. Polyurethane resin has low viscosity that makes it feasible to penetrate and fill the pore space between fine particles. In this study a series of laboratory pressure grouting and leaching tests were conducted to simulate and assess the effectiveness of polyurethane grouting for immobilizing contaminants in DVZs. Soil with fine particles was prepared with ¹²⁷I (as iodide) that served as a non-radioactive surrogate for radioactive ¹²⁹I. After grouting and curing, leaching tests were used to measure and compare contaminant diffusivity and leachability index values. Additionally, changes in porosity and saturated hydraulic conductivity of grouted soil were measured. X-Ray Computer Tomography (XCT) results showed that the cured polyurethane was distributed nearly homogeneously and approximately half of the voids were filled with cured polyurethane. Grouting reduced the saturated hydraulic conductivity of soil by 37 %. The effective diffusivity decreased by more than 80 % as compared with the ungrouted soil. The leachability index of the grouted soil was 6.5; meeting the criteria established by the U.S. Nuclear Regulatory Commission (NRC) standard. The results obtained in this study provide a valuable assessment of polyurethane grouting for iodide immobilization in the DVZ and indicate this approach may be a viable method for contaminant remediation in DVZ soils.</div></div>","PeriodicalId":11567,"journal":{"name":"Engineering Geology","volume":"347 ","pages":"Article 107945"},"PeriodicalIF":6.9,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143083367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pull-out capacity and failure mechanism of suction anchors in clay considering trench configuration and local scour effects","authors":"Min-Hao Zhang ,&nbsp;Zhen-Yu Yin ,&nbsp;Yong Fu","doi":"10.1016/j.enggeo.2025.107942","DOIUrl":"10.1016/j.enggeo.2025.107942","url":null,"abstract":"<div><div>Seabed trenching is a common geological and geotechnical hazard encountered in offshore engineering, potentially compromising the pull-out capacity of suction anchors and posing risks to mooring systems over time. Currently, to ensure conservative design and facilitate modelling convenience, many relevant studies simplify the trench configurations compared to their in-situ conditions which may lead to inaccurate estimation of trench influence. Moreover, the combined effect of trench and local scour is rarely addressed. Therefore, this paper aims to investigate the impact of various trench transversal and longitudinal geometric configurations on undrained pull-out capacity and failure mechanisms of suction anchors in clay considering local scour phenomena. Two distinct downward trends in the pull-out capacity for trench width expansion and trench depth extension are revealed. Comparisons between simplified and realistic trench configurations are conducted and it is recommended to model the realistic trench configurations for accurate estimation of capacity loss. Scenarios involving simultaneous trenches and local scours result in a more significant reduction in pull-out capacity compared to individual trenches. Based on the analyses results, a systematic calculation framework is proposed to estimate the pull-out capacity during trench development. Furthermore, two design considerations are examined with the conclusions that relocating padeye depth towards shallower positions to reduce trench depth cannot achieve higher capacity and selecting suction anchors with larger aspect ratios should be preferred choices considering material cost. These findings can assist in estimating capacity loss and optimizing anchor design when encountering trench-related issues in engineering practice.</div></div>","PeriodicalId":11567,"journal":{"name":"Engineering Geology","volume":"347 ","pages":"Article 107942"},"PeriodicalIF":6.9,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143077676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}