Results 21 to 30 of about 186 (158)

A fractal derivative constitutive model for three stages in granite creep

open access: yesResults in Physics, 2017
In this paper, by replacing the Newtonian dashpot with the fractal dashpot and considering damage effect, a new constitutive model is proposed in terms of time fractal derivative to describe the full creep regions of granite.
R. Wang, Z. Zhuo, H.W. Zhou, J.F. Liu
doaj   +1 more source

Effect of stress condition on the creep behaviour of Beishan granite

open access: yesIOP Conference Series: Earth and Environmental Science, 2020
Abstract In China, a deep granite formation in Beishan area is currently considered as a potential host rock for high-level radioactive waste repositories. Creep tests were conducted by two modes, namely single step loading mode on several samples and multi-step loading mode on single sample.
Wang Chunping, Liu Jianfeng, Liu Jian
openaire   +1 more source

Petrogenesis and tectonic significance of Late Permian-Middle Triassic granitoids in Guobaoshan, eastern section of the eastern Tianshan mountains: Constraints from geochronology and geochemistry

open access: yesDizhi lixue xuebao, 2022
The eastern Tianshan-Beishan area is one of the important metallogenic belts in China, but the Late Permian-Middle Triassic tectonic evolution still remains a controversial issue.
HE Xinyu   +5 more
doaj   +1 more source

Micro-structure characteristics and dynamic mechanical properties of granite after high temperature

open access: yesRock and Soil Mechanics, 2022
In order to study the change rules of mineral composition, micro-structure evolution characteristics and their relationship with dynamic properties of granite after high temperature treatment, the high temperature tests on Beishan granite in Gansu ...
LI Yan   +6 more
doaj   +1 more source

Experimental Study on Physical and Mechanical Properties of Beishan Granite after Cyclic Heating and Cooling with Water

open access: yesLithosphere, 2022
Granite characterized by low permeability and high strength is commonly seen in underground construction. This paper is aiming at studying the influence of cyclic heating and water cooling on physicomechanical properties of Beishan granite, which is ...
Z. H. Wang   +3 more
doaj   +1 more source

Final Amalgamation Processes of the Southern Altaids: Insights from the Triassic Houhongquan Ophiolitic Mélange in the Beishan Orogen (NW China)

open access: yesLithosphere, 2023
The Permian–Triassic tectonic setting is still controversial in the southern Altaids. The Beishan orogen is an ideal region to address the final tectonic of the Altaids. These systematic mapping, geochemistry, and geochronology studies on the Houhongquan
Qigui Mao   +8 more
doaj   +1 more source

Adsorption and diffusion of some important radionuclides in Beishan granites and Gaomiaozi Bentonites [PDF]

open access: yesSCIENTIA SINICA Chimica, 2020
The methods and results studying the adsorption and diffusion of some important radionuclides in Beishan granites and Gaomiaozi bentonites performed in domestic institutions and universities for the geological disposal of high-level radioactive wastes are reviewed.
Xiangyun Wang   +4 more
openaire   +1 more source

Study on energy concentration and dissipation of Beishan granite in Gansu during failure process

open access: yes矿业科学学报, 2018
Servo test system was used to obtain stress-strain curves of Beishan granite under different confining pressure, and the loading process was jointly controlled by means of axial pressure and circumferential deformation.Variation characteristics of energy
Wang Chaosheng   +4 more
doaj   +1 more source

Investigation of Equilibrium Characteristics of Granite-groundwater System at Different Temperatures in Beishan Underground Laboratory Ramp Area

open access: yesYuanzineng kexue jishu
The Beishan granite area in Gansu Province is the primary candidate site for the geological disposal of high-level radioactive waste (HLRW) in China. Understanding the evolution of the host rock surrounding the disposal repository is an essential part of
JIE Shengyu1, YI Yunpeng1, SHE Jingye1, ZHOU Jiayu1, 2, KHAN Sunbal1, YIN Wencheng1, 3, LI Jiebiao4, , WANG Ju4, KANG Mingliang1
doaj   +1 more source

The Beishan underground research laboratory for geological disposal of high-level radioactive waste in China: Planning, site selection, site characterization and in situ tests

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2018
With the rapid development of nuclear power in China, the disposal of high-level radioactive waste (HLW) has become an important issue for nuclear safety and environmental protection. Deep geological disposal is internationally accepted as a feasible and
Ju Wang   +3 more
doaj   +1 more source

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