Results 81 to 90 of about 51,784 (268)
Review and prospects of shear test of bolted rock joints
Deep Underground Science and Engineering, EarlyView.The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren +4 more
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Deep Underground Science and Engineering, EarlyView.The effects of grout strength and thickness on the shear behavior of bolt–grout interfaces (BGI) under constant normal stiffness conditions are investigated. Shear strength, failure modes, and acoustic emission characteristics are examined. The findings reveal that grout strength exerts a significantly greater influence on BGI shear strength and ...
Sunhao Zhang +5 more
wiley +1 more source
EARTHQUAKE, CAUSES OF EARTHQUAKE
In this article, general information about earthquakes, their types, classification. Earthquake conditions above and below the ground are classified. The article is intended for the requirements of labor protection and technical safety directions, labor protection and safety specialists, and general readers.
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Earthquake Risk and Earthquake Insurance
Hokengakuzasshi (JOURNAL of INSURANCE SCIENCE), 2008 地震リスクには，他のリスクと比較してさまざまな特性があり，そのために保険困難な要素が多い。これを克服するために，空間的リスクに加えて，時間的リスクを大幅に取り込むことで，リスク分散を実現しようとする。しかしこれは，保険原理の観点からは，重大な問題を含んでいる。そこで，本稿では，非常に特異な性質を有する地震保険について，保険原理に照らしながら，構造的特徴ならびに限界について考察しながら，官民役割分担のあり方について論じる。とりわけ，地震保険に見られる逆選択現象の本質を捉えつつ，その対処策として採用されている地域別料率について，過度の採用は水平的不公平を増大させる恐れがあることから，むしろ，耐震構造に対するウェイトを高めた料率設定を行うことが，契約者間の公平性に照らして望ましいことを主張する。
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“Earthquakes and Buildings” [PDF]
Nature, 1884 PROF. JOHN MILNE, of Tokio, refers in an article under this heading (NATURE, vol. xxix. p. 290) to buildings in Caracas, which are low, slightly pyramidal, have flat roofs, and are bound along their faces with iron. Being for more than twenty years a resident of this city, I hope I may be credited with knowing something of its architecture, and as such
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Deep Underground Science and Engineering, EarlyView.Three sets of strength data were selected, including hydrostatic pressure independent within the brittle region (HPI‐B), hydrostatic pressure dependent within the brittle region (HPD‐B), and hydrostatic pressure dependent within the brittle–ductile region (HPD‐BD). For HPI type, the failure envelope within the deviatoric plane remains constant.
Jiacun Liu +3 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.Abstract As tunnel construction advances in lengths and depths, the construction of tunnels in high geothermal environments has become increasingly common, raising significant fire risks. In this study, a 1:20 scale model tunnel test platform was constructed to investigate the effects of a high geothermal environment on fire behavior in tunnels during ...
Xiaoxian Fei +6 more
wiley +1 more source
Hybrid Approach of Real-time Ground Motion Prediction for Earthquake Early Warning
SeismicaWe propose a hybrid approach for ground motion field prediction in earthquake early warning (EEW) systems, combining the Propagation of Local Undamped Motion (PLUM) method with advanced machine learning (ML) algorithms. Our methodology integrates PLUM's
Hongcai Zhang +5 more
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Deep Underground Science and Engineering, EarlyView.This study highlights that with the static and time‐dependent evolution of slip versus dilation tendency parameter space, structurally controlled deep geothermal systems can be selected within areas of higher permeability and lower seismic hazard. Abstract Faults play a vital role in the Earth's hydraulic system by facilitating fluid flow when dilating
Michal Kruszewski +4 more
wiley +1 more source
The Scientific World Journal, 2014 Hydrogeochemistry of 32 hot springs in the western Sichuan Province after the Wenchuan MS 8.0 earthquake was investigated by analyzing the concentrations of cation and anion and the isotopic compositions of hydrogen and oxygen.
Zhi Chen +7 more
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