Results 21 to 30 of about 99,891 (264)

Plastic deformation and hardening characteristics of the staggered zone under high in-situ stress unloading conditions

Rock and Soil Mechanics, 2022
To clarify the plastic law and hardening characteristics of deformation and failure of staggered zone under high in-situ stress unloading conditions with excavation in underground engineering, a series of triaxial tests under different confining ...
DUAN Shu-qian, GAO Po, JIANG Quan, ZHOU Yang-yi, XU Ding-ping   +4 more
doaj   +1 more source

Evolution Characteristics of Plastic Zone in Jointed Rock Mass of High-Temperature Hydraulic Tunnel

Applied Sciences, 2023
The evolution characteristics and the extent of the plastic zone in rock mass can reflect the failure characteristics and destruction degree of a hydraulic tunnel.
Kangbin Li, Haibo Jiang, Gang Wei, Pengfei Xiang   +3 more
doaj   +1 more source

Optimization of the Plastic Area of a Borehole Based on the Gas Extraction Effect and Its Engineering Application

Geofluids, 2021
Gas extraction is most commonly used to control gas disasters in coal mines. The distribution of the plastic zone around a borehole and the sealing quality are key factors affecting gas extraction. In this paper, the plastic zone was simulated by COMSOL,
Kuan Wu, Shiliang Shi, Yi Lu, He Li, Min Li   +4 more
doaj   +1 more source

Comparative assessment of geometric stability in plastic zone of arteriotomy with сarotid artery endarterectomy

Учёные записки Санкт-Петербургского государственного медицинского университета им. Акад. И.П. Павлова, 2016
Carotid artery endarterectomy (KEAE) is a worldwide standard operation in revascularization of brain. KEAE methodology is wellknown, proven and used in many health care facilities.The aim of our examination was: 1) to study anatomic changes of plastic ...
K. M. Vakhitov
doaj   +1 more source

Roof stability evaluation of large section open-off cut in lower slice of slicing mining

Gong-kuang zidonghua, 2022
In order to study the roof stability of large-section open-off cut in lower slice of slicing mining, the 14 boreholes in the top coal of the 203 open-off cut in the lower slice of 1−2 coal seam in Huojitu Mine of Daliuta Mine is taken as the research ...
CHAI Jing, QIAO Yu, GAO Shigang, GAO Dengyan, CHEN Sushe, LYU Qingxu, DU Wengang, HAN Zhicheng   +7 more
doaj   +1 more source

Relationship between plastic zone of roadway and coal and gas outburst hole

Meikuang Anquan, 2022
The outburst hole is of great significance to study the mechanism of coal and gas outburst. Through numerical simulation, the plastic zone of coal body at the excavation head of outburst roadway is obtained and compared with the actual outburst holes ...
HAN Sen, WANG Weijun, PENG Gang
doaj   +1 more source

Mutational Analysis of the Chlamydia muridarum Plasticity Zone [PDF]

Infection and Immunity, 2015
ABSTRACTPathogenically diverseChlamydiaspp. can have surprisingly similar genomes.Chlamydia trachomatisisolates that cause trachoma, sexually transmitted genital tract infections (chlamydia), and invasive lymphogranuloma venereum (LGV) and the murine strainChlamydia muridarumshare 99% of their gene content.
Krithika Rajaram, Amanda M. Giebel, Evelyn Toh, Shuai Hu, Jasmine H. Newman, Sandra G. Morrison, Laszlo Kari, Richard P. Morrison, David E. Nelson   +8 more
openaire   +2 more sources

A New Unified Solution for Circular Tunnels Based on Generalized SMP Criterion considering the Strain Softening and Dilatancy

Advances in Civil Engineering, 2019
According to the strain-softening characteristics of rock mass, an ideal elastic strain-softening model is developed, and the surrounding rock of tunnels is subdivided into the plastic broken zone, plastic strain-softening zone, and elastic zone.
Qifeng Guo, Jiliang Pan, Xinghui Wu, Xun Xi, Meifeng Cai   +4 more
doaj   +1 more source

Extension characteristics of the “Butterfly-shaped” plastic zone and stability control of deep mining roadway in Xingdong mine

矿业科学学报, 2017
The distribution of plastic zone of surrounding rock in deep mining roadway is the key to control the stability of surrounding rock. Taking the deep mining roadway of Xingdong Mine as the research background, according to the "butterfly-shaped" plastic ...
Li Yongen, Guo Xiaofei, Ma Ji, Huo Tianhong, Zhang Hong   +4 more
doaj   +1 more source

Influence Factor of Roadway Surrounding Plastic Zone Under Unequal Stress in Two Directions

Meikuang Anquan, 2020
To study the distribution of surrounding rock plastic zone in roadway under unequal stress in two directions, the south rail lane in 500 m underground 81 mining area of Xutuan Coal Mine is taken as the engineering background.
DONG Hailong, CHEN Rubo, ZHANG Zhao, LIU Dianzhu
doaj   +1 more source