Zobrazeno 1 - 10
of 241
pro vyhledávání: '"Guangming ZHAO"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract Deep rock are often in a true triaxial stress state. Studying the impacts of varying unloading speeds on their strain energy (SE) density is highly significant for predicting rock stability. Through true triaxial unloading principal stress e
Externí odkaz:
https://doaj.org/article/b622f18380e14abca71677d546ab40d8
Autor:
Qihang ZHANG, Xiangrui MENG, Guangming ZHAO, Wensong XU, Chongyan LIU, Zhixi LIU, Xukun WU, Minjie QI
Publikováno v:
Meitan xuebao, Vol 49, Iss S1, Pp 182-196 (2024)
To investigate the effects of different rates on the energy and damage evolution of sandstone during true triaxial cyclic loading and unloading damage, the true triaxial compression test, true triaxial primary loading and unloading test, and true tri
Externí odkaz:
https://doaj.org/article/1ac93a4a157748909c4974d89c35ba67
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 7, Pp 57-67 (2024)
In order to obtain high performance cement-based grouting materials for mining and expand the application of staple fiber in the field of full-length anchorage, Utilizing ultrafine silica cement as the binder material, with the addition of accelerato
Externí odkaz:
https://doaj.org/article/e6ef5011c66e4ff3aa6bcaa1e27c87c9
Autor:
Yupei Liang, Mingyu Liu, Fan Tang, Yanhong Guo, Hao Zhang, Shihan Liu, Yanping Yang, Guangming Zhao, Teng Tan, Baicheng Yao
Publikováno v:
Frontiers of Optoelectronics, Vol 17, Iss 1, Pp 1-11 (2024)
Abstract Since their inception, frequency combs generated in microresonators, known as microcombs, have sparked significant scientific interests. Among the various applications leveraging microcombs, soliton microcombs are often preferred due to thei
Externí odkaz:
https://doaj.org/article/aeb517f650494b7694dffac11e682309
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-15 (2024)
Abstract With the large scale mining of coal and the increase of abandoned goafs under weakly cemented aquifer strata in Western China, it is urgent to study the time dependent mechanical properties of water sensitive aquifer strata. In this paper, c
Externí odkaz:
https://doaj.org/article/4ec0f3e1ef7d46d79e731d219b2974ff
Publikováno v:
International Journal of Coal Science & Technology, Vol 10, Iss 1, Pp 1-17 (2023)
Abstract Coal mining under the geological conditions of a loose layer will lead to the intensification of surface movement and deformation, and mining under the geological conditions of a fault will lead to the living slip of a fault. Mining under bo
Externí odkaz:
https://doaj.org/article/bc5c7f4f29564a73a125db390fca4673
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 9, Iss 1, Pp 1-13 (2023)
Abstract With depth increase of many mines, the damage of surrounding rock by high ground stress cannot be ignored under the blasting excavation method. In view of the strong disturbance of surrounding rock caused by dynamic excavation and unloading
Externí odkaz:
https://doaj.org/article/67f4252bad7244a1b31dad46e194ec6c
Publikováno v:
Energies, Vol 17, Iss 21, p 5441 (2024)
To investigate the reasonable width of a coal pillar in the downward mining section of close-distance coal seams, the stress state of any point below the residual coal pillar in the overlying goaf and the width of a small coal pillar were studied by
Externí odkaz:
https://doaj.org/article/3f4e023ef4b74f84938392f1a9c0323e
Publikováno v:
Meitan kexue jishu, Vol 51, Iss 10, Pp 24-34 (2023)
A mechanical model of full-length anchoring bolt is established to study the stability of mechanical bearing structure of surrounding rock in high stress soft rock roadway after full-length anchoring bolt. The model considers the dilatancy characteri
Externí odkaz:
https://doaj.org/article/36bdb236ca1a4eea98f9db5fd279afc0
Autor:
Jun ZHOU, Guangming ZHAO, Xiangrui MENG, Chunliang DONG, Chongyan LIU, Longpei MA, Wensong XU
Publikováno v:
Meitan xuebao, Vol 48, Iss 9, Pp 3384-3392 (2023)
Dynamic unloading is instantaneous, and the transient unloading effect has important influence on deep rock blasting excavation. In order to study the deformation law and failure mechanism of surrounding rock under dynamic excavation with unloading c
Externí odkaz:
https://doaj.org/article/bf950cb00a574d659195e4723aea4439