Zobrazeno 1 - 10
of 1 158
pro vyhledávání: '"Fracture characteristics"'
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 9, Pp 3743-3763 (2024)
Abstract In this paper, based on smoothed‐particle hydrodynamics‐finite element method, numerical models of plunger squeezing water at a sinusoidal velocity were established to simulate self‐excited pulse water jet (SEPWJ). RHT constitutive mod
Externí odkaz:
https://doaj.org/article/3dad9fca67aa4c8899cdb56ddb2dfe3c
Publikováno v:
Open Geosciences, Vol 16, Iss 1, Pp 1-15 (2024)
Quantitative evaluation of rock dynamic disaster intensity is a challenging and difficult task in the field of earth science. In this article, the dynamic compression tests of granite under different impact velocities are carried out, and the energy
Externí odkaz:
https://doaj.org/article/d8431622fe354aa29439163191f444d0
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:
工程科学学报, Vol 46, Iss 6, Pp 982-993 (2024)
In this paper, the microscopic fracture evolution law, crack propagation characteristics, and strength change mechanism of argillaceous quartz siltstone under near fatigue strength cyclic loading were revealed by conducting cyclic loading and unloadi
Externí odkaz:
https://doaj.org/article/a87346a740f84df79580d97382e6e418
Autor:
Guanjie ZHANG, Binxin ZHANG, Ke XU, Chuanbo SHEN, Hui ZHANG, Guoqing YIN, Haiying WANG, Zhimin WANG, Jingshou LIU
Publikováno v:
地质科技通报, Vol 43, Iss 2, Pp 75-86 (2024)
Objective Natural fractures are important oil-gas migration channels and reservoir spaces in deep tight sandstone reservoirs and significantly affect oil-gas production capacity in the Bozi Block of the Kuqa Depression. Methods Based on rock core, th
Externí odkaz:
https://doaj.org/article/b716f350b23c4ddea040a24fc69dc0a6
Publikováno v:
Natural Gas Industry B, Vol 11, Iss 1, Pp 28-41 (2024)
China is rich in geothermal resources, especially in Fujian Province, where 207 exposed hot springs have been discovered. The maximum temperature recorded in geothermal wells is above 121 °C in this province, indicating a high geothermal resource po
Externí odkaz:
https://doaj.org/article/482ecce2cb1d4d7fa8ad6d23a19ee17b
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-20 (2024)
Abstract The variation in the width of the mining face significantly affects the stability of the face, leading to potential roof fracturing and collapse. Additionally, strong mining pressure can manifest, severely impeding the safe production of coa
Externí odkaz:
https://doaj.org/article/04972f65251e44f4b0f31df34c6f0c8c
Publikováno v:
Journal of Materials Research and Technology, Vol 28, Iss , Pp 569-581 (2024)
To understand the stability of deep underground engineering rocks at high temperatures, it is necessary to conduct comprehensive tests on the mechanical properties of the rocks. In this study, a series of true triaxial tests (TTT) were conducted on s
Externí odkaz:
https://doaj.org/article/c90aa867e970479580f1e0330347b173
Publikováno v:
Applied Sciences, Vol 14, Iss 21, p 10014 (2024)
Noise reduction is a key process in digital image detection technology for concrete cracks and bug-holes. In this study, the threshold range of the flood-filling noise reduction algorithm was investigated experimentally. Surface cracks and bug-holes
Externí odkaz:
https://doaj.org/article/979a9924834d4e3fb96610787c10e3d0
Publikováno v:
Energies, Vol 17, Iss 21, p 5344 (2024)
The anisotropic fracture characteristics of oil shale are crucial in determining reservoir modification parameters and pyrolysis efficiency during in situ oil shale pyrolysis. Therefore, understanding the mechanisms through which temperature and bedd
Externí odkaz:
https://doaj.org/article/31303e7c02694f418912d4979f3709d1