Zobrazeno 1 - 10
of 514
pro vyhledávání: '"Vertical shaft"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-18 (2024)
Abstract The Xiyu conglomerate, which is extensively distributed in Xinjiang, China, presents challenges for vertical shaft construction owing to its poor cementation and low strength. The selection of an appropriate footage length is paramount for e
Externí odkaz:
https://doaj.org/article/b0a157985a1641b5890246e8710ad270
Autor:
Jinzheng WANG, Guoqiang LI, Peishuai LI, Fanchao MENG, Jia KONG, Xiaojun ZHU, Hui LIU, Xiaolong CHENG
Publikováno v:
Meikuang Anquan, Vol 55, Iss 10, Pp 139-149 (2024)
In order to study the deflection and deformation law of vertical shafts in deep and thick topsoil layer, the main and secondary shafts of Shandong Guotun Coal Mine are taken as the examples, and the wireline baseline method is adopted to carry out mu
Externí odkaz:
https://doaj.org/article/322ad1417c6546c2b5589785944a4bf9
Autor:
Baris Gunes, Turgay Cosgun, Namık Aysal, Kamran Samadi, Turhan Bilir, Onur Şimşek, Karsu Hatipoğlu, Baris Sayin
Publikováno v:
Case Studies in Construction Materials, Vol 21, Iss , Pp e03786- (2024)
Determining the seismic performance level of shaft structures is crucial due to their vital role in ensuring a water supply. Since these are underground structures, the loads they encounter and the structural modeling processes differ significantly f
Externí odkaz:
https://doaj.org/article/b1a0603bd6f5466f830bfb7041d159dc
Publikováno v:
Meitan kexue jishu, Vol 52, Iss S1, Pp 145-152 (2024)
Mechanical rock breaking represented by boring machines is the direction of future development of vertical shaft and roadway excavation technology. In order to ensure the safety of rapid mechanical and intelligent excavation of shaft and roadway, adv
Externí odkaz:
https://doaj.org/article/ab112063ee974870905519af3b7e6eef
Autor:
Chen, Guanren a, d, Li, Dongwei b, ⁎, Chen, Junhao c, Chen, Hao a, Wang, Jindong a, Jia, Zhiwen a, Sun, Qiao b, Xia, Minghai e
Publikováno v:
In Cold Regions Science and Technology December 2024 228
Autor:
Zhang, Pengyuan a, Chai, Junrui a, ⁎, Cao, Jing a, ⁎, Qin, Yuan a, Xu, Zengguang a, Geng, Kaiqiang a, Cao, Cheng a
Publikováno v:
In Journal of Hydrology November 2024 644
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-10 (2024)
Abstract The surrounding rock pressure of vertical shafts is one of the basic parameters of shaft lining design. Investigating its calculation methods and applicable scopes has great engineering significance. The paper classifies and compares the cal
Externí odkaz:
https://doaj.org/article/92e084a1864e44659cbf6e6590cb4e13
Publikováno v:
Fire, Vol 7, Iss 8, p 274 (2024)
Vertical shaft natural ventilation is a common smoke exhaust method in highway tunnel fires. This study investigated the vertical shaft natural smoke exhaust work in highway tunnel fires with the effect of multiple factors through numerical simulatio
Externí odkaz:
https://doaj.org/article/7f3aef5357404157844429915ed4fbdd
Autor:
Hao NI
Publikováno v:
Meitan kexue jishu, Vol 51, Iss 10, Pp 65-71 (2023)
According to the limiting factors of vertical shaft blasting construction and explosive controlled conditions, combined with the characteristics of the existing cutting technology, this paper puts forward the carbon dioxide two-step cylindrical cut b
Externí odkaz:
https://doaj.org/article/6d5d2cc607ab4fb6911bb32658b2c6a6
Publikováno v:
Tehnički Vjesnik, Vol 31, Iss 6, Pp 1987-1994 (2024)
This research aimed to study the impact of different altitudes on the flue gas temperature and thermal stratification in the highway tunnel with a vertical shaft, by establishing a full-sized tunnel model using the numerical simulation software Fire
Externí odkaz:
https://doaj.org/article/4ed121384b73443ca291105207a9b98b