Results 61 to 70 of about 12,064 (255)

Analytical stress solution framework for lined compressed air energy storage chambers and its application to safe burial depth determination and supporting effectiveness evaluation

open access: yesDeep Underground Science and Engineering, EarlyView.
An analytical framework delivers a closed‐form stress solution for lined compressed air energy storage chambers, enabling the determination of the minimum safe burial depth. The solution quantitatively evaluates lining support effectiveness, offering a reliable tool for chamber design and optimization.
Zeyuan Sun   +3 more
wiley   +1 more source

Seismic vulnerability evaluation of power grids in mainland China

open access: yesGeomatics, Natural Hazards & Risk
A refined vulnerability evaluation methodology for substations, transmission lines, and power grids in mainland China is proposed. A database suitable for assessing the vulnerability of power grid facilities in districts (counties) is established.
Meng Wu   +4 more
doaj   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

open access: yesDeep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu   +4 more
wiley   +1 more source

Study of Rapid Evaluation Method for Structural Load-Bearing Capacity of Typical Rural Masonry Residential Buildings in Shandong Province, China

open access: yesAdvances in Civil Engineering
Typical rural masonry residential buildings mainly include brick–wood and brick–concrete structures, and they occupy a significant proportion among individual buildings in Shandong Province, and their structural reliability directly affects the safety of
Xu Zheng   +4 more
doaj   +1 more source

Next-generation performance based earthquake engineering*

open access: yesElectronic Journal of Structural Engineering, 2007
The next-generation tools and procedures for performance-based earthquake engineering that are being developed in the United States represent a radical departure from traditional seismic design practice and performance assessment.
A. Whittaker   +2 more
doaj   +1 more source

Shock wave propagation characteristics of aluminum‐containing explosive in corrugated steel‐lined tunnel

open access: yesDeep Underground Science and Engineering, EarlyView.
Aluminum‐enhanced afterburning renders AE explosives more hazardous than conventional ones. Corrugated steel linings reduce far‐field AE blast overpressure by ~50% through wave reflection and dissipation. The developed model accurately predicts peak pressure (<10% error) and arrival time (<3% error), supporting protective design.
Zhen Wang   +5 more
wiley   +1 more source

Some moments is earthquake engineering

open access: yesVietnam Journal of Mechanics, 1987
None
Tran Van Lien
doaj   +1 more source

Mechanistic insights across curing regimes for enzymatic and biopolymer‐optimized reinforcement in rock masses

open access: yesDeep Underground Science and Engineering, EarlyView.
This study examines the effects of curing temperature on the mechanical behavior of underground rock masses treated with enzyme‐induced calcite precipitation (EICP) and an innovative biopolymer‐modified EICP (BP‐EICP). Abstract Biocementation is an innovative and sustainable technique for reinforcing weak and weathered rock masses in natural and ...
Mary C. Ngoma, Oladoyin Kolawole
wiley   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

open access: yesDeep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu   +8 more
wiley   +1 more source

Unified Description of the Mechanical Properties of Typical Marine Soil and Its Application

open access: yesShock and Vibration, 2017
This study employed a modified elastoplastic constitutive model that can systematically describe the monotonic and cyclic mechanical behaviors of typical marine soils combining the subloading, normal, and superloading yield surfaces, in the seismic ...
Yongqiang Li   +4 more
doaj   +1 more source

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