Results 91 to 100 of about 2,263 (190)

Analysis of the Charge Structure and Lightning Activity During a Severe Beijing Thunderstorm via an Innovative Balloon‐Borne 3D Electric Field Observation System

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 14, 28 July 2026.
Abstract We developed an innovative balloon‐borne observation system based on China's BeiDou sounding platform that integrates a three‐axis electric field sensor for in‐cloud measurements of thunderstorm electrification. On 13 May 2025, this system was deployed during a severe convective storm over Beijing. In combination with multisource observations,
Ye Tian, Wenbin Gao, Chenyi Shi, Yue Sun, Xuebo Fan, Lei Meng, YongTao Yu, LongBin Zhang, Chen Chang, Jiachun Yang, Jin Li   +10 more
wiley   +1 more source

Anisotropic characteristics and creep model for thin-layered rock under true triaxial compression

Journal of Rock Mechanics and Geotechnical Engineering
The failure phenomenon of thin-layered rock tunnels not only exhibits asymmetric spatial characteristics, but also significant time-dependent characteristics under high in-situ stress, which is attributed to the time-dependent fracture of thin-layered ...
Tianxiang Song, Xia-Ting Feng, Yangyi Zhou, Chengxiang Yang, Xiaojun Yu   +4 more
doaj   +1 more source

A method to determine strength parameters by triaxial testing and 3D rock failure models

Journal of Rock Mechanics and Geotechnical Engineering
Estimating the strength parameters of a chosen rock failure criterion is crucial for rational stability analyses. However, the grid search algorithm applied to true triaxial test data presents challenges that hinder its widespread adoption.
Pengfei He, Zhigang Tao, Xulong Yao, Manchao He, Mostafa Sharifzadeh   +4 more
doaj   +1 more source

Evolution of mechanical parameters of Shuangjiangkou granite under different loading cycles and stress paths

Journal of Rock Mechanics and Geotechnical Engineering
Surrounding rocks at different locations are generally subjected to different stress paths during the process of deep hard rock excavation. In this study, to reveal the mechanical parameters of deep surrounding rock under different stress paths, a new ...
Liangjie Gu, Xia-Ting Feng, Rui Kong, Chengxiang Yang, Yuelin Xia   +4 more
doaj   +1 more source

Probability prediction of true‐triaxial compressive strength of intact rocks based on the improved PSO‐RVM model

Deep Underground Science and Engineering
In deep underground engineering design, the true‐triaxial compressive strength of intact rocks is a critical evaluation index. Traditional methods for acquiring true‐triaxial strength data are hampered by labor‐intensive manual operations.
Qi Zhang, Maohui Wang, Ning Wang, Yixin Shen, Xuzhen He   +4 more
doaj   +1 more source

Three-dimensional strength criterion for rocks: A review

Energy Reviews
Deep rocks are typically under a true-triaxial stress state. The strength of deep rock is thus dictated by both the direction and magnitude of principal stresses.
Jiacun Liu, Xing Li, Junjie Xiao, Yachen Xie, Kaiwen Xia   +4 more
doaj   +1 more source

Influence of gas migration on permeability of soft coalbed methane reservoirs under true triaxial stress conditions. [PDF]

R Soc Open Sci, 2019
Wang G, Liu Z, Hu Y, Fan C, Wang W, Li J.   +5 more
europepmc   +1 more source

Borehole pressure response and rock fracture evolution during pipe-assisted high-pressure gas-impact under true-triaxial stress. [PDF]

Sci Rep
Yan Z, Hu S, Wang Y, Li C, Wang L.
europepmc   +1 more source

Weakening and fracturing mechanism of roof strength through borehole pressure relief under true triaxial stress. [PDF]

Sci Rep
Li Y, Chang G, Yue X, Tu M, Li Z, Li P.
europepmc   +1 more source

Design and Application of a High-performance True Triaxial Stress Cell [PDF]

Insights in Mining Science & Technology, 2019
openaire   +1 more source