Zobrazeno 1 - 10
of 119
pro vyhledávání: '"Xiangxin Liu"'
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-15 (2024)
Abstract The weakening of circular tunnels is a global problem that has not been resolved satisfactorily. In the tunnelling process, surrounding rock of circular-tunnel performs a process of “excavating → weakening → continuous excavating → w
Externí odkaz:
https://doaj.org/article/9dd02fce78644e3eac005d1e848d8e18
Publikováno v:
Materials, Vol 17, Iss 19, p 4684 (2024)
The features of rock shear-slip fracturing are closely related to the stability of rock mass engineering. Granite, white sandstone, red sandstone, and yellow sandstone specimens were selected in this study. The loading phase of “shear failure > slo
Externí odkaz:
https://doaj.org/article/526e0c36b18046edb34a15e15d4f1b04
Publikováno v:
Applied Sciences, Vol 14, Iss 17, p 7970 (2024)
Layered rocks are widely distributed in mining and underground engineering. The evolution processes, such as crack initiation, development and penetration, inevitably occur due to stress changes. This study carried out an experiment and numerical sim
Externí odkaz:
https://doaj.org/article/beed233dfd9b44d6ab54f45615f6e4d2
Publikováno v:
Energies, Vol 17, Iss 3, p 592 (2024)
Cadmium telluride (CdTe) photovoltaics is a promising and scalable technology, commanding over 90% of the thin film photovoltaics market. An appropriate window layer is crucial for high-efficiency CdTe solar cells. This study aimed to investigate a r
Externí odkaz:
https://doaj.org/article/447473bd8625452ea953bffac4dd7ec3
Publikováno v:
Remote Sensing, Vol 15, Iss 21, p 5132 (2023)
Infrared radiation (IR) features that are influenced by infrared emissivity ε and physical temperature Td have been successfully applied to the early-warning of landslides. Although the infrared emissivity of a rock is a key parameter to determine i
Externí odkaz:
https://doaj.org/article/0c9356bafe2c4ae692b8ceca328a8d90
Publikováno v:
Frontiers in Earth Science, Vol 9 (2021)
Previous experiments indicated that infrared radiation temperature (IRT) was applied in monitoring rock stress or rock mass fracturing, and abnormal IRT phenomena preceding rock failure or tectonic earthquakes were frequently reported. However, the c
Externí odkaz:
https://doaj.org/article/e21287c9f1694963a0dd466d88938a35
Publikováno v:
Mathematics, Vol 10, Iss 18, p 3276 (2022)
Rock burst disasters occurring in underground high-stress rock mass mining and excavation engineering seriously threaten the safety of workers and hinders the progress of engineering construction. Rock burst classification prediction is the basis of
Externí odkaz:
https://doaj.org/article/302778a4354d4e49a4f8fbe0f9e491e4
Publikováno v:
Advances in Materials Science and Engineering, Vol 2021 (2021)
While the tunnel is in the high tectonic stress environment and surrounding rock of tunnel has the characteristics of soft texture and stronger expansion, the preference of tunnel shape is horseshoe. An elastic-plastic model is analyzed by complex fu
Externí odkaz:
https://doaj.org/article/bfef837429ba4769bab0ead0567cb1ab
Publikováno v:
Minerals, Vol 12, Iss 1, p 94 (2022)
Meso-structure is an important factor affecting the characteristics of rock fracture. To determine the factors influencing the internal meso-structural characteristics upon the crack generation and extension, rock samples were tested under uniaxial c
Externí odkaz:
https://doaj.org/article/f6f0fa6e032441b0abaaef517d2c73fb
Publikováno v:
Materials Research Express, Vol 8, Iss 1, p 016410 (2021)
200 nm cadmium stannate (Cd _2 SnO _4 ) transparent conductive layer films with a sheet resistance of 6.35 Ω/sq and resistivity of 1.27 × 10 ^−4 Ω · cm are deposited by magnetron sputtering coupling with adjustable target bias voltage followed
Externí odkaz:
https://doaj.org/article/d46d13668cec40ab9f6e001712d17370