Bulletin of Engineering Geology and the Environment最新文献

{"title":"Mechanism of coalburst triggered by thrust fault slipping based on field monitoring, indoor experiments and numerical simulation","authors":"Ningbo Zhang,&nbsp;Zong-Xian Zhang,&nbsp;Zhenhua Ouyang,&nbsp;Yang Liu,&nbsp;Yunpeng Li,&nbsp;Qianhai Xu,&nbsp;Jian Liu,&nbsp;Qingwen Shi","doi":"10.1007/s10064-026-05302-6","DOIUrl":"10.1007/s10064-026-05302-6","url":null,"abstract":"<div><p>Coalburst disasters induced by thrust fault slip frequently take place in underground coal mines and often lead to severe roadway damage and personnel casualties. However, the triggering mechanism of coalburst remains unclear. Combined with field monitoring, physical analog simulation and numerical simulation, this study identifies the segmented slip behavior of thrust faults induced by mining activities, reveals the formation mechanism of stress concentration in coal bodies between mining panels and the fault, and analyzes the generation sources of dynamic stress disturbance. Furthermore, laboratory coupled static-dynamic loading tests are carried out on hollow coal specimens simulating underground roadways, and the progressive damage and failure characteristics of coal are investigated. The main conclusions are as follows: (1) As mining advances toward the thrust fault, the fault exhibits obvious segmented slip: the upper fault segment slips anticlockwise while the lower segment slips clockwise. (2) The clamping effect generated by segmented fault slip is the primary factor inducing high stress concentration in the coal between the working face and the thrust fault. (3) Coal bodies bearing high static stress are highly susceptible to unstable failure and subsequent coalburst under superimposed dynamic stress loading. (4) Tensile stress waves reflected at roadway surfaces break surrounding rock, triggering coalburst accompanied by sidewall spalling and floor heave. (5) Segmented fault slip and its resultant clamping effect are two core factors responsible for thrust fault-slip coalburst. This paper puts forward a new viewpoint that segmented fault slip acts as the fundamental trigger of thrust fault-slip coalburst, which provides an in-depth theoretical basis for revealing the occurrence mechanism of such coalburst disasters.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"85 10","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10064-026-05302-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148926722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Analytical framework for coupled hydromechanical modeling of bearing capacity of stone column-supported footings in unsaturated soils","authors":"Movahed Rouhani,&nbsp;Mahmoud Ghazavi,&nbsp;Farshid Vahedifard","doi":"10.1007/s10064-026-05304-4","DOIUrl":"10.1007/s10064-026-05304-4","url":null,"abstract":"<div><p>Traditional analyses of stone column (SC) bearing capacity typically assume saturated soil conditions, overlooking the unsaturated states that SCs may experience during their service life. To address this limitation, this study presents a novel analytical framework for evaluating the bearing capacity of SCs embedded in unsaturated soils. The proposed bearing capacity model (BCM) integrates an analytical solution for coupled hydromechanical modeling of one-dimensional transient unsaturated flow into the imaginary retaining wall (IRW) method, which defines the boundary between the SC and the surrounding soil. Further, simplified derivations are presented for the special case of a constant suction stress profile along depth, applicable to both unsaturated and saturated/unsaturated soil conditions. Equilibrium equations for passive and active forces acting on the IRW are derived under various suction profiles. Model validation against a published case study shows strong agreement between predicted and observed values. Results indicate that SC bearing capacity increases nonlinearly with matric suction, decreases with higher groundwater levels, and is highly sensitive to infiltration behavior, especially in fine-grained soils. These findings underscore the importance of incorporating unsaturated soil mechanics into the analysis of SC-supported foundations.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"85 10","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148926774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rheological damage modeling of anisotropic jointed rock masses using the microstructure tensor method: a case study of the baihetan hydropower station slope","authors":"Weiya Xu,&nbsp;Changhao Lyu,&nbsp;Tao Zhang,&nbsp;Jianrong Xu,&nbsp;Mingtao Hu,&nbsp;Wei-chau Xie","doi":"10.1007/s10064-026-05294-3","DOIUrl":"10.1007/s10064-026-05294-3","url":null,"abstract":"<div><p>Columnar jointed rock masses (CJRMs) exhibit pronounced structural anisotropy and time-dependent deformation under long-term loading, posing significant challenges for the stability evaluation of large hydropower slopes. Conventional rheological constitutive models generally assume isotropy or neglect the influence of joint orientation, limiting their applicability to columnar basalt formations. To address this issue, this study develops an anisotropic rheological damage constitutive model for CJRMs based on microstructure tensor theory. By introducing an aging damage variable, the model quantitatively links rheological strain evolution to time-dependent damage processes, enabling unified characterization of both anisotropic and rheological behavior. The proposed model is implemented in FLAC3D through secondary development, and its validity is verified through comparison with triaxial rheological tests on Baihetan basalt sample. The numerical results reproduce the whole creep stage and closely match laboratory measurements, confirming the model’s capability to capture directional deformation. The model is further applied to the right-bank slope of the Baihetan Hydropower Station as a case study. The analysis reveals that incorporating structural anisotropy significantly improves agreement with field monitoring data compared with isotropic assumptions. The maximum calculated damage factor is 0.16, which is well below the adopted threshold value and corresponds to a safety factor of 1.48, indicating that the slope remains stable during long-term operation. This study establishes a validated constitutive framework and numerical approach for simulating anisotropic rheological damage in columnar jointed rock masses. The results enhance the reliability of long-term deformation prediction and provide practical guidance for the design and safety evaluation of large hydropower slopes dominated by CJRMs.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"85 10","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148926758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multiscale experimental–numerical investigation of shear failure and damage evolution in soft–hard rock joints under constant normal stress","authors":"Shengpeng Hao,&nbsp;Yangyang Chen,&nbsp;Zhenyu Zhang,&nbsp;Yuyu Zhang,&nbsp;Yu Bai","doi":"10.1007/s10064-026-05290-7","DOIUrl":"10.1007/s10064-026-05290-7","url":null,"abstract":"<div><p>Alternating soft and hard layers are common in geotechnical engineering, but their interface shear mechanics remain poorly understood. This study combined direct shear tests on gypsum–based soft–hard joint analogues with three–dimensional discrete element method (DEM) simulations to investigate the effects of normal stress, wall–strength contrast, and joint roughness coefficient (JRC) on shear strength, acoustic emission (AE) response, crack evolution, and post–failure fracture topology. Both experimental and numerical results exhibited a four–stage shear response comprising elastic, damage, softening, and residual stages. Within the tested experimental matrix, normal stress produced the largest observed changes in peak and residual strengths and was associated with a greater relative contribution of tensile–type cracking and more distributed damage in the weaker wall. Increasing JRC enhanced asperity interlocking and shear–related damage, whereas increasing wall–strength ratio promoted asymmetric damage localization toward the weaker wall. AE monitoring and DEM bond–break analysis showed qualitative consistency in damage staging and relative crack–type proportions, although the DEM underestimated residual strength in some cases and did not reproduce the early compaction stage. Post–shear fracture maps showed broader damage zones at higher normal stress, more tortuous fracture paths with increasing roughness, and stronger one-sided localization with increasing strength contrast. These findings provide a multiscale basis for interpreting the shear failure of the tested soft–hard interfaces, while their broader applicability requires further validation using replicated tests, wider parameter ranges, and natural rock interfaces.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"85 10","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148926756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Macro–mesoscopic damage evolution and constitutive modeling of bio-reinforced weak interlayer zones under cyclic excavation disturbance","authors":"Shu-Qian Duan,&nbsp;Jing-Ran Wang,&nbsp;Xi-Qing Jiang,&nbsp;Jie-Cheng Xiong,&nbsp;Shi-Hao Liu,&nbsp;Ding-Ping Xu,&nbsp;Yun-Long Liu,&nbsp;Jing-Wei Zhang,&nbsp;Wei Liu,&nbsp;Chun-Yu He","doi":"10.1007/s10064-026-05293-4","DOIUrl":"10.1007/s10064-026-05293-4","url":null,"abstract":"<div><p>The weak interlayer zone (WIZ), characterized by tectonic damage and weak cementation, is significantly impacted by load-induced damage accumulation and stiffness degradation under cyclic loading and unloading conditions, thereby posing a serious threat to the stability of underground cavern excavations. To address this engineering geological issue, a synergistic reinforcement technique combining enzyme-induced calcium carbonate precipitation and fiber reinforcement (EICP-FR) was employed to reinforce the WIZ. The macro-meso correlation between mesoscopic structural characteristics and macroscopic mechanical responses was elucidated through uniaxial cyclic loading–unloading tests combined with quantitative SEM-MATLAB analysis. The peak strength of the WIZ increases to 340% of that of the unreinforced sample, with fatigue life substantially extended. The WIZ evolves from progressive failure of weakly cemented media to ductile failure characteristic of fiber-reinforced composites. The three-dimensional interlocking network of fibers, CaCO₃, and WIZ particles inhibits meso-structural degradation by inhibiting particle breakage, restricting particle reorientation, and reducing pore space complexity. The average particle area is maintained at 125% of that of the unreinforced sample, accompanied by a reduction of 48.7% in the anisotropy ratio and a decrease of 33% in the pore morphology fraction dimension. Based on these findings, a macro-meso energy-based constitutive model was established by physically mapping mesoscopic features to constitutive parameters, providing a high precision (R² &gt; 0.95) theoretical tool for characterizing the non-linear cyclic unloading responses of EICP-FR reinforced WIZ. These outcomes provide a mechanistic framework for controlling WIZ-induced engineering geological hazards in deep underground excavations and assessing cavern-support system stability under excavation disturbances.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"85 10","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel data - driven prediction method for frozen soil unconfined compressive strength considering uncertainty: Partial Bayesian Neural Network","authors":"Jin-peng Xin,&nbsp;Jia-ting Wang,&nbsp;Hong-xin Reng,&nbsp;Qin-long Liu,&nbsp;Yuan-en Pang,&nbsp;Xu Li","doi":"10.1007/s10064-026-05267-6","DOIUrl":"10.1007/s10064-026-05267-6","url":null,"abstract":"<div><p>The unconfined compressive strength (UCS) is critical for evaluating frozen soil mechanics. Traditional empirical models often fail to capture the complex nonlinear relationships between UCS and varying key factors (temperature, water content, density) and ignore inherent prediction uncertainties. To address this, we propose a novel Partial Bayesian Neural Network (PBNN) model to predict frozen soil UCS, explicitly quantifying natural uncertainties through iterative sampling. Results demonstrate: (1) The PBNN model outperforms traditional machine learning algorithms, achieving a high Coefficient of Determination (<i>R</i>^<i>2</i>) of 0.98. (2) Incorporating soil type as a categorical input significantly enhances predictive performance, with the unified U-UCS model showing optimal results. (3) The PBNN model effectively quantifies prediction uncertainty, providing robust reliability assessments. Feature analysis identifies temperature, mass water content, and dry density as the most critical factors influencing UCS. Additionally, we developed an open-source graphical user interface to enhance practical applicability. This study provides a reliable, data-driven approach for UCS prediction, facilitating safer cold-region infrastructure design.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"85 10","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148926762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geomorphic insights for seismic hazard assessment using high-resolution digital elevation models in urban environments","authors":"Z. Paktarmani,&nbsp;Z. Masoumi,&nbsp;E. Shabanian","doi":"10.1007/s10064-026-05265-8","DOIUrl":"10.1007/s10064-026-05265-8","url":null,"abstract":"<div><p>The amplification of seismic waves by soft soils, known as site effect, makes the mapping of Quaternary deposits and geomorphic settings essential for seismic hazard zoning. We propose a framework for primary-level site effect assessment in urban areas. Our approach utilizes historical aerial photos and Structure from Motion (SfM) to reconstruct a high-resolution digital elevation model (DEM) of the pre-urban landscape. The integration of the high-resolution DEM with an orthophotomosaic and 3D visualizations provided a robust basis for identifying and classifying Quaternary deposits and tectonic landforms. Applied to Urmia, Iran, a high-seismic-hazard city, the method revealed that 74% of its urban area is built on Quaternary deposits, with the highest vulnerability in the Shahr Chay River floodplain. Validation against borehole data confirmed the accuracy of the produced vulnerability map. Our core finding is that pre-urban DEMs provide a robust, cost-effective basis for seismic microzonation where traditional geomorphic indicators are lost. This methodology directly addresses a key challenge in urban seismology, optimizing the planning of geophysical surveys and significantly improving hazard assessment accuracy.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"85 10","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148926757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stability improvement and physics-informed neural network based on prediction of deformation in lime–pozzolana treated dam slopes","authors":"Djamel Eddine Bouri,&nbsp;Mohammed el amin Bourouis,&nbsp;Zeyneb Belabbaci,&nbsp;Dahmane Mouloud,&nbsp;Abdelkader Brahimi,&nbsp;Adel Keddou,&nbsp;Youcef Houmadi,&nbsp;Ahmed Arab,&nbsp;Jan Najser,&nbsp;David Mašín","doi":"10.1007/s10064-026-05298-z","DOIUrl":"10.1007/s10064-026-05298-z","url":null,"abstract":"<div><p>This study presents an integrated approach that combines laboratory testing, numerical modeling, and artificial intelligence to enhance the assessment of soil behavior and slope stability. Direct shear tests were conducted on soils stabilized with varying proportions of lime and pozzolana under normal stresses of 50, 100, 200, and 300 kPa, with curing periods of 7 and 28 days. The results demonstrate a significant increase in shear strength, cohesion, and the internal friction angle with increasing stabilizer content and curing time, highlighting the synergistic effect of the lime–pozzolana mixture. The improved geotechnical parameters were subsequently incorporated into PLAXIS 2D simulations to evaluate the stability of an earthen dam using the c–φ reduction method within the framework of the Mohr–Coulomb model, resulting in a substantial improvement in the factor of safety. To mitigate the high computational cost associated with repeated finite element simulations, a Physics-Informed Neural Network (PINN) was developed as a surrogate model. The PINN accurately predicted displacement and stress fields while incorporating the governing elastostatic equations, achieving errors below 3% relative to the finite element method (FEM) results and providing near-instantaneous computational performance. This integrated framework significantly reduces design time and provides an efficient and reliable tool for dam safety assessment and optimization, particularly in resource-constrained regions.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"85 10","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148926307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of thermal treatment and grain size on the basic friction angle of granite rocks","authors":"Soroush Imani,&nbsp;Mahmoud Behnia,&nbsp;Xuepeng Zhang,&nbsp;Naser Golsanami","doi":"10.1007/s10064-026-05274-7","DOIUrl":"10.1007/s10064-026-05274-7","url":null,"abstract":"<div><p>This study explores how grain size, temperature, and moisture affect the shear resistance and microstructure of granitic rocks. The granite samples were categorized into three grain sizes: Fine (F), Medium (M), and Coarse (C). Specimens were prepared as 3 cm-thick slabs with overall dimensions of 7 × 7 cm to assess their basic friction angle. The experimental program examined the effects of temperature at 25 °C, 275 °C, and 525 °C, as well as a saturated condition at 25 °C, to evaluate variations in the basic friction angle from tilt tests. The changes in grain size across different temperatures were analyzed using thin section microscopy. Results show that the basic friction angle (φ_b) increases with temperature, with coarse-grained samples experiencing the most significant increase. Furthermore, φ_b rises with grain size across all temperature levels and this trend is well represented by a proposed linear regression model. Saturation also enhances friction, leading to the highest φ_b under room temperature saturated conditions. The comparison of the basic friction angle for similar and dissimilar surfaces revealed that the impact of temperature could be similar or different depending on the surface combinations. This research links grain size distribution to mineralogical composition and demonstrates a synergistic effect of temperature and grain size on the basic friction angle. This integrated approach builds on previous work by concurrently considering grain size, thermal and moisture conditions, and mineralogical factors in granitic materials.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"85 10","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148926376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Micro-macro evaluation of ISS-lime-fly ash stabilized saline soils under freeze-thaw cycling","authors":"Jiyun Nan,&nbsp;Dan Chang,&nbsp;Jiankun Liu,&nbsp;Yihui Yan,&nbsp;Xue Li,&nbsp;Jong-Sub Lee,&nbsp;Xusheng Wan,&nbsp;Liyang Wang","doi":"10.1007/s10064-026-05300-8","DOIUrl":"10.1007/s10064-026-05300-8","url":null,"abstract":"<div><p>In cold regions, repeated freeze–thaw disturbances can weaken saline soils and compromise long-term infrastructure performance, highlighting the need for durable, low-carbon-oriented stabilization. This research investigates the mechanical behavior and microstructural evolution of saline soils treated with a combined system of ionic soil stabilizer (ISS), lime, and fly ash, prepared under field-relevant compaction and subjected to controlled freeze-thaw conditions. Consolidated drained triaxial tests, mercury intrusion porosimetry, and scanning electron microscopy were performed to evaluate strength development and pore-structure evolution. The results show that the peak deviator stress increases progressively with freeze-thaw repetitions, increasing from 1707 to 2093 kPa before cycling to 2420–2502 kPa after 20 cycles under a confining pressure of 200 kPa, with the 9%ISS specimens outperforming the lower ISS dosage groups. Microstructural assessments consistently show that increasing the ISS dosage leads to a more compact and resilient pore network during freeze-thaw cycling. The cumulative pore volume varied within 0.227–0.265, 0.232–0.255, and 0.234–0.248 mL/g for the 3%ISS, 6%ISS, and 9%ISS specimens, respectively, indicating reduced pore-volume fluctuation at higher ISS contents. Early cycles induce particle fragmentation that exposes fresh surfaces and sustains pozzolanic reactions, while continued cycling promotes the accumulation and densification of cementitious products, resulting in reduced inter-aggregate pore sizes, smoother pore boundaries, and an overall decline in apparent porosity. These microstructural transformations are most pronounced in the 9%ISS specimens, aligning with their superior mechanical performance. This work provides new micro-macro evidence linking ISS dosage and pore-structure evolution to the freeze-thaw resilience of stabilized saline soils.</p></div>","PeriodicalId":500,"journal":{"name":"Bulletin of Engineering Geology and the Environment","volume":"85 10","pages":""},"PeriodicalIF":4.9,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148871847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}