Results 241 to 250 of about 192,349 (315)

Research on transparency of coal mine geological conditions based on distributed fiber‐optic sensing technology

open access: yesDeep Underground Science and Engineering, EarlyView.
This study, which focuses on geological hazards associated with coal mines, analyzes the types and sensing parameters of geological hazards caused by coal seam mining, summarizes the action fields related to these hazards in mining, and discusses the multi‐field sensing method of disaster characteristics associated with mining rock mass in conjunction ...
Chunde Piao   +4 more
wiley   +1 more source

Investigation of the failure characteristics of fissure tunnels under dynamic and static combinations

open access: yesDeep Underground Science and Engineering, EarlyView.
This article aims to investigate the dynamic fracture response of fractured tunnel models under zero geological stress through physical experiments and numerical simulations. It further simulates the dynamic fracture characteristics of fractured tunnel models under geological stress ranging from 0 to 2.5 MPa using the numerical software AUTODYN ...
Peng Ying   +7 more
wiley   +1 more source

Creep properties and constitutive model of diabase in deep water conveyance tunnels

open access: yesDeep Underground Science and Engineering, EarlyView.
The axial and lateral creep characteristics of diabase were analyzed based on compression creep tests. The nonlinear viscoelastic‐plastic model capable of describing the whole creep process was established based on the fractional derivative and damage theories.
Zhigang Tao   +5 more
wiley   +1 more source

Colossal Barocaloric Effects at Triple‐Phase Points

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Colossal barocaloric effects were achieved in odd‐numbered normal alkane systems, such as C17H36, C19H40 and C21H44 approaching triple‐phase point by overlapping two separated phase transitions of ordered‐disordered solid phase transition and solid–liquid phase transition under a relative low pressure.
Zhipeng Zhang   +9 more
wiley   +1 more source

Halloysite‐Based X‐Ray‐Activated Persistent Luminescent Hydrogels Enable Multiple‐Level Encryption and Dual‐Locked Camouflage

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
X‐ray‐activated persistent luminescent hydrogels with self‐healing properties were facilely developed based on the plasma‐assisted surface modification of halloysite nanotubes. Exploring multiple‐level encryption technologies and extra safety decoding ways to prevent information leakage is of great significance and interest, but is still challenging ...
Huabiao Chen   +7 more
wiley   +1 more source

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