Deformation Stability and Failure Analysis of Composite Interface Accumulation Slope by LI Shuai

“…Distribution of groundwater and accumulated soil stress is an important factor for the deformation stability and failure mode of composite interface slope.Based on the typical geological section of Dongjiashan landslide,this paper generalizes a geomechanical model of composite interface slope,analyzes the development and evolution results of the equivalent plastic zone of the slope at different groundwater levels by finite element software,mainly explains the stress and deformation characteristics of the slope,slip zone and central soil in natural state,and reveals the deformation and failure mechanism of the composite interface slope.The numerical calculation results show that under natural and heavy rain conditions,the equivalent plastic zone of the slope first penetrates integrally and gradually develops towards the middle of the slope,and finally forms the secondary plastic penetrating surface in the upper middle part of the slope.The groundwater level reduces the stability of the composite base slope,and there is a higher possibility of secondary sliding on the upper part of composite interface slope during heavy rain.The shape of the horizontal displacement change curve of the slip zone and slope is similar to that of the composite interface,and the non-monotonic change potential slip surface affects the deformation distribution and failure mode of the slope at the geotechnical composite interface.…”
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Exploration and Practice of Annual Safety Report Regulation for Long-Distance Water Diversion Projects by HU Jiang, MA Fuheng, SHENG Jinbao, DAI Zhanqiang, LI Shuncai, FU Youqun

“…Long-distance water diversion projects are important strategic infrastructure to optimize the patterns of water resource allocation,which are characterized by long distances,many hydraulic structures,complex geological and environmental conditions,and high maintenance requirements.The long-term safe operation of these projects has been highly concerned.The annual safety report of these projects is an effective means to grasp the engineering status in a timely and dynamic manner.On the basis of the characteristics of these projects and the discussion on the existing basis and compilation principles of annual safety reports,the organization and implementation of the main work in annual reports,such as safety inspection,safety detection,and safety assessment,are explored,and the regulation of an annual safety report is proposed.According to the practice of the first annual safety report on the central route of the South-to-North Water Diversion Project,the key contents of the annual safety report,including safety inspection,safety detection,and safety monitoring,as well as operational management contents such as dispatching operation,maintenance,safety production,and emergency management are briefly introduced.Finally,the experience,understanding,and difficulty of annual safety report compilation are summarized.The successful application of the annual safety report in the central route project can provide a reference for similar projects.…”
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Molecular Phylogeny and Morphology Reveal Four New Species of <i>Conocybe</i> (Bolbitiaceae, Agaricales) from the Qinghai-Xizang Plateau, China by Xi-Xi Han, Dorji Phurbu, Bin Cao, Jia-Xin Li, Xin-Yu Zhu, Lin-Hui Liu, Naritsada Thongklang, Kevin D. Hyde, Rui-Lin Zhao

“…The Qinghai-Xizang Plateau, known for its high altitude, geological history of plate collision, crustal uplift, and special ecology factors, provides an ideal environment for studying fungal biodiversity in extreme environmental conditions. …”
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Failure Mechanism and Control of Lower Retracement Channel in Close-Distance Double-Thick Coal Seams by Fulian He, Kai Lv, Xiaobin Li, Binbin Qin, Liang Li

“…This study provides a reference for coal mines with similar production geological conditions.…”
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Effects of Anisotropy and CO2 Wettability on CO2 Storage Capacity in Sandstone by Jun Young Song, Yeon Jong Jeong, Tae Sup Yun

“…The geological sequestration of carbon dioxide (CO2) is an alternative strategy for mitigating global warming. …”
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Deformation and Failure Mechanism of Roadway Sensitive to Stress Disturbance and Its Zonal Support Technology by Qiangling Yao, Xuehua Li, Fan Pan, Teng Wang, Guang Wang

“…The 6163 haulage roadway in the Qidong coal mine passes through a fault zone, which causes severe deformation in the surrounding rock, requiring repeated roadway repairs. Based on geological features in the fault area, we analyze the factors affecting roadway deformation and failure and propose the concept of roadway sensitive to stress disturbance (RSSD). …”
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Elastic-Impedance-Based Fluid/Porosity Term and Fracture Weaknesses Inversion in Transversely Isotropic Media with a Tilted Axis of Symmetry by Xinpeng Pan, Lin Li, Guangzhi Zhang, Yian Cui

“…Based on the information of dip angle of fractures provided by geologic and well data, we propose a two-step inversion approach of utilizing azimuthal seismic data to estimate unknown parameters involving the fluid/porosity term and fracture weaknesses: (1) the constrained sparse spike inversion (CSSI) for azimuthally anisotropic EI data and (2) the estimation of unknown parameters with the low-frequency constrained regularization term. …”
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Blockage Types and Status Evaluation of Drainage System in Highway Tunnels in Guangdong Province by LI Kejian, LIU Xiabing, WENG Jianhong, ZHOU Yu

“…In order to evaluate the blockage status of the drainage system in operational highway tunnels,this paper summarized the types of problems and blockage materials in highway tunnel drainage systems and proposed an evaluation method for blockage status based on investigations of several highway tunnels in Guangdong Province.The results primarily indicated the following:① The water leakage problems in tunnels were closely related to seasonal rainfall over time and were spatially connected to the distribution of unfavorable geological conditions such as karst.and the decline of drainage function caused by drainage system siltation was an important cause of tunnel water damage.② The types of blockage materials in the highway tunnel drainage system included silt,sand and gravel,concrete blocks or foreign matter,and crystallization or scale deposits.The proposed evaluation indicators for blockage status were as follows:filling degree,flow status,turbidity degree,and accumulation degree.③ Based on the priority division of evaluation indicators for blockage status, a blockage status evaluation method of highway tunnel drainage systems was proposed,and this method has been successfully applied to the drainage system remediation project of the Xinwu Tunnel.The research results can provide reference for the operation and maintenance of highway tunnel drainage systems.…”
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A bibliometric analysis and complied dataset of natural disasters on the Qinghai-Tibet Plateau since 1900 by Jiawei Yi, Xinning Fan, Yunyan Du, Chunhuan Zhang, Sheng Huang, Rui Xu, Xiaoyue Wang, Dingchen Hu, Minglei Lu, Zhenbo Wang

“…We categorized QTP disasters into five major types (geological disasters, glacial disasters, meteorological disasters, hydrological disasters, and other disasters) and 15 subtypes. …”
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Identification of subsurface cavities in urban environment by Boualem BOUYAHIAOUI, Abdeslam ABTOUT, Yasser BAYOU, Mohamed BENDALI, Hassina BOUKERBOUT

“…Particularly, we would like study the geological observed phenomena and its potential association with the presence of a cavity within the salt layer. …”
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Contributions of abiotic nature to riverine populations in the Amazon, Brazil: an analysis based on geoenvironmental units by Raimundo Humberto Cavalcante Lima, Maria Da Gloria Motta Garcia

“…This study identifies the importance of the relationship between geodiversity and ES, elucidating its role in the well-being of local populations. Three geological-environmental domains were identified and subdivided into five geoenvironmental units covering the geosystem services described in “Nature's Contributions to People (NCP)”. …”
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An Introduction to USGS Topo Maps by Hartwig Hochmair, Adam Benjamin

“…In 1879, the United States Geological Survey began to map the topography of the United States, producing new map versions of each area at semi-regular time intervals. …”
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Spatio-temporal Variation Characteristics and Influencing Factors of Bank Collapse in Reservoir Area of Jinghong Hydropower Station by LIANG Ruifeng, XU Peng

“…The reservoir area of Jinghong hydropower station belongs to the medium mountain canyon landform with variable stratum lithologies and complex geological structures.By investigation and review of bank collapse in the reservoir area in 2009,2012,2014 and 2019,this paper summarizes and analyzes the temporal-spatial variation characteristics and influencing factors of bank collapse.The results show that:①Up to the survey period in 2019,there are 299 bank collapses in the reservoir area.The bank collapse with volume between 10~100 m³ occupies the first place,130 bank collapses stop developing and 169 bank collapses are developing;②The number of bank collapse is increasing year by year;the bank collapses are mainly distributed in the reservoir section with steep terrain,thicker loose layer and strong weathered rock;the reservoir area is mainly characterized by small-scale bank collapse,but there is a trend of gradual expansion;the increase of bank collapses which are developing is obviously slowing down and the bank collapses in earlier stage show a gradually stable state;③Specific topography,thicker loose layer,economic trees which are unfavorable to soil and water conservation,and frequent human production activities are the main factors for bank collapses.…”
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Analysis of the level of knowledge of disaster preparedness attitudes in dealing with the Gamalama volcano disaster among students in senior high schools in the city of Ternate by Abdullah Irwan, Maryani Enok, Ningrum Epon

“…Natural disasters in Indonesia have been increasing annually, encompassing both geological and hydrometeorological events. One of the recurring natural disasters in Ternate City is the volcanic eruption of Gamalama Volcano. …”
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Revisiting the Landscape Mosaic model. by Peter Vogt, James Wickham, José Ignacio Barredo, Kurt Riitters

“…It provides a landscape perspective of anthropic threats posed by agriculture and urban development, and the spatial-temporal shifting of the landscape mosaic indicates landscapes where anthropic intensity has changed. We use the U.S. Geological Survey provided National Land Cover Database (NLCD) for the years 2001 and 2021 to derive the landscape mosaic at five analysis scales. …”
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Geohazard features of the Aeolian Island slopes and the North-Eastern Sicily offshore by Fabiano Gamberi, Daniele Casalbore, Michael Marani, Marzia Rovere, Alessandro Bosman, Marilena Calarco, Giacomo Dalla Valle, Elisa Leidi, Eleonora Martorelli, Alessandra Mercorella, Martina Pierdomenico, Claudia Romagnoli, Chiara Adami, Francesco Giuseppe Falese, Andrè Fascetti, Valentina Ferrante, Michela Ingrassia, Erika Lai, Cristian Montanaro, Andrea Sposato, Francesco Latino Chiocci

“…Both areas are affected by active geological processes, which represent important geohazards elements. …”
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Numerical Simulation Study on Influencing Factors of Surrounding Rock Stability Based on AHP-Orthogonal Experiment Model by LI Lu

“…Taking the diversion tunnel of a hydropower station as an example,based on engineering and geological factors that affect surrounding rock stability,this paper considers elastic modulus E,cohesive force C,internal friction angle Φ,tunnel buried depth H,and tunnel radius R as influencing factors,carries out 16 sets of numerical simulation calculations under different working conditions with the principle of orthogonal experiment,and analyzes the vertical displacement at the top and the horizontal displacement at the waist of the tunnel by the range analysis and AHP method.The results show that:The primary and secondary factors affecting the vertical displacement at the top of the tunnel and their priorities are H&gt;R&gt;E&gt;C&gt;Φ,of which the weight is 43.097%,28.731%,19.117%,5.871%,3.184% respectively.The primary and secondary factors affecting the horizontal displacement at the waist of the tunnel and their priorities are H&gt;E&gt;R&gt;C&gt;Φ,of which the weight is 46.832%,21.820%,18.626%,8.160%,4.562% respectively.The combination of orthogonal range analysis and AHP method increases the satisfaction of consistency test,making the analysis results more reliable.…”
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How does the water flow? And does data follow it? by Henrik Dissing

“…In consultation with the Danish Geological Survey (GEUS), the Danish municipalities association (KL), and the Danish Environmental Protection Agency as well as the private companies WatsonC, DRYP, and WSP, Denmark's Environmental Portal (DMP) has developed an IT system for water levels, water flow and groundwater level measurements. …”
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Bearing characteristics and damage rules of regenerated rock mass by Ping Wang, Zilong Zeng, Yingming Li, Hongbo Liao, Jianhua Lv, Haijun Guo

“…Abstract This study investigates the bearing characteristics and damage evolution of regenerative rock masses formed under varying geological conditions through uniaxial loading tests, numerical simulations, and theoretical derivations. …”
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Thermal Infrared Anomalies of Several Strong Earthquakes by Congxin Wei, Yuansheng Zhang, Xiao Guo, Shaoxing Hui, Manzhong Qin, Ying Zhang

“…We easily extracted and identified such seismic anomalies by method of “time-frequency relative power spectrum.” (2) There exist evident and different characteristic periods and magnitudes of thermal abnormal radiation for each case. (3) Thermal radiation anomalies are closely related to the geological structure. (4) Thermal radiation has obvious characteristics in abnormal duration, range, and morphology. …”
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