Zobrazeno 1 - 10
of 3 435
pro vyhledávání: '"high stress"'
Autor:
Meng WANG, Sitao ZHU, Shidong LI, Dongdong LI, Fuxing JIANG, Xiufeng ZHANG, Yang CHEN, Xiangge MENG
Publikováno v:
Meitan xuebao, Vol 49, Iss 10, Pp 4295-4310 (2024)
Deep coal mining, in addition to facing the three “high” and one “disturbance”, faces a high-stress corrosion environment formed by underground corrosive atmosphere, high stress, strong disturbance, and other factors. Taking the deep mines in
Externí odkaz:
https://doaj.org/article/cb0ea8cf06c84be8a177179976c3aa01
Publikováno v:
Deep Underground Science and Engineering, Vol 3, Iss 3, Pp 326-337 (2024)
Abstract Testing of large‐sized specimens is becoming increasingly important in deep underground rock mechanics and engineering. In traditional mechanical loading, stresses on large‐sized specimens are achieved by large host frames and hydraulic
Externí odkaz:
https://doaj.org/article/9cd4dddbdcde42728ebf976a278a78b7
Autor:
Xiaoze WEN, Guorui FENG, Jun GUO, Pengfei WANG, Jinwen BAI, Ruipeng QIAN, Luyang YU, Jie ZHANG, Pengfei ZHANG
Publikováno v:
Meitan xuebao, Vol 49, Iss 9, Pp 3810-3828 (2024)
The mechanical response characteristics of rock under low-frequency perturbation loads and high-stress conditions are important factors affecting the stability of interlayer rock in the goaf during upward mining. Taking the coal-bearing sedimentary r
Externí odkaz:
https://doaj.org/article/c0db3a0f4b63431f8ae92d8bde7affc1
Autor:
Xin Chang, Guozhou Qiu, Jing Li, Yintong Guo, Zhiwen Hu, Hanzhi Yang, Xinao Zhang, Yongjiang Liu
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 8, Pp 3227-3242 (2024)
Abstract To study the effect of vertical stress difference coefficient on fracture characteristics of shale fracturing, high stress true triaxial hydraulic fracturing test was carried out. By analyzing the profile after fracturing, it was found that
Externí odkaz:
https://doaj.org/article/e68f792d9935446885ee6ee8a40807ed
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 7, Pp 55-63 (2024)
The coupling effect of static and dynamic stress in fault structure areas exacerbates the risk of rock impact in underground fault areas. The stress distribution law and impact dynamic load response features of roadway surrounding rock in fault struc
Externí odkaz:
https://doaj.org/article/44c7d9dee37744c88f97cb4888f9080d
Publikováno v:
Case Studies in Construction Materials, Vol 21, Iss , Pp e03889- (2024)
In order to control the surrounding rock of deep high-stress roadways, a new prestressed anchor-grouting reinforcement method was proposed with an engineering background of the 1780 ventilation roadway of Shiyakou Coal Mine. A high-fluidity quick-set
Externí odkaz:
https://doaj.org/article/2b981c253e8d4abea1ef4fb2262a8001
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 6, Pp 1-13 (2024)
This research delves into the mechanical response of surrounding rock in deep coal mine roadways under high static and dynamic loads, utilizing similarity simulation experiments. The focus is on the stress and displacement fields during distinct phas
Externí odkaz:
https://doaj.org/article/24347e5d9c254fb4b3d8d5bfcd768629
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 3, Pp 934-948 (2024)
Abstract The formation of complex fracture network is a difficult problem in the process of deep rock reservoir reconstruction, and the key to the generation of intricate fracture systems in deep reservoirs is to communicate more pre‐existing fract
Externí odkaz:
https://doaj.org/article/dabe19ed0b2b4bdcadd9dd504c0f413f
Publikováno v:
Journal of Multidisciplinary Healthcare, Vol Volume 17, Pp 843-854 (2024)
Kareemah Salem Alshurtan, Saad Yousef Aldhaifi, Khalid Abdulkarim Alshammari, Othman Mohammed Alodayli, Khalid Falah Alqahtani, Sarah Yousef Aldhaifi Department of Internal Medicine and Adult Critical Care, College of Medicine, University of Ha’il,
Externí odkaz:
https://doaj.org/article/e539a22ab55f4368932789f02a1a8710
Autor:
Maurizio Ziccarelli
Publikováno v:
Geosciences, Vol 14, Iss 10, p 264 (2024)
The mechanical behaviour of soils subjected to any stress path in which deviatoric stresses are present is heavily characterised by non-linearity, irreversibility and is strongly dependent on the initial state of stress. The latter, for the majority
Externí odkaz:
https://doaj.org/article/7f7b9a98130d4da680067547d0ef66f7