当期期刊

Research on damage failure mechanism and dynamic mechanical behavior of layered shale with different angles under confining pressure

含特征层理页岩围压下的秘密:损伤机理与动态力学行为解密

Ning Luo, Haohao Zhang, Yabo Chai, Penglong Li, Cheng Zhai, Jianan

发布时间:2024-01-29

关键词:Research on damage failure mechanism and dynamic mechanical behavior of layered shale with different angles under confining pressure

摘要:岩石工程的深入发展使得高地应力下岩石的动态力学性质及破坏特性成为研究的焦点。在高低应力下的变形稳定性和关键控制因素的识别是岩石力学和工程未来研究中的难题。高地应力、温度、渗透压和采矿干扰的复杂环境导致了围压不稳定性和岩爆的不可避免性。本研究建立了围压作用下考虑层理效应的页岩有限元模型。研究结果可作为深部资源开采的关键技术参数。

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The role of temperature-enhanced fault closure in promoting postinjection pressure diffusion and seismicity in enhanced geothermal systems

Yinlin Ji, Yuedu Chen, Hannes Hofmann, Yuan Zhang, Arno Zang, Günter Zimmermann

发布时间:2023-11-23

关键词:The role of temperatureenhanced fault closure in promoting postinjection pressure diffusion and seismicity enhanced geothermal systems

摘要:AbstractPost shut-in seismic events in enhanced geothermal systems (EGSs) occur predominantly at the outer rim of the co-injection seismic cloud. The concept of postinjection fracture and fault closure near the injection well has been proposed and validated as a mechanism for enhancing post shut-in pressure diffusion that promotes seismic hazard. This phenomenon is primarily attributed to the p...

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Fan-hinged shear instead of frictional stick–slip as the main and most dangerous mechanism of natural, induced, and volcanic earthquakes in the earth's crust

俄罗斯资深教授发表系列文章-2:风扇机制 - 地震理解的范式转变

Boris G. Tarasov

发布时间:2023-11-07

关键词:Fanhinged shear instead of frictional stickslip as the main and most dangerous mechanism natural induced volcanic earthquakes in earths crust

摘要:1 INTRODUCTIONFrictional stick–slip instability along pre-existing faults has been accepted as the main mechanism of earthquakes for about 60 years, following the publication of laboratory results by Brace and Byerlee (1966). The gist of their work is the conclusion that the stick–slip instability along pre-existing faults in rock specimens reflects all the features inherent in earthquakes, s...

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Dominant factors in MiniCone, CPT and pile correlations: A data-based approach

揭秘MiniCone、CPT和桩之间的关键联系:基于数据的深度探索

Seyed Sajad Shirani, Abolfazl Eslami, Amirhossein Ebrahimipour, Moses Karakouzian

发布时间:2023-11-23

关键词:Dominant factors in MiniCone CPT and pile correlations A databased approach

摘要:1 INTRODUCTIONDevices and equipment can be transported to the site for performing in situ tests, aiming to overcome the challenges associated with conventional methods comprising drilling, sampling, transportation, remolding, and testing (Schmertmann, 1978). Research has been conducted to provide the possibility of modeling real conditions in practice from different aspects representing realist...

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Coupling effects of temperature, confining pressure, and pore pressure on permeability and average pore size of Longmaxi shale

Xiaoyan Zhang, Hongsen Li, Xue Tan, Guoliang Li, Hua Jiang

发布时间:2023-08-17

关键词:absolute permeability, apparent permeability, gas slippage factors, pore width, shale

摘要:AbstractThe evolution due to temperature and pressure of shale reservoir permeability affects the productivity evaluation and development decision of shale gas reservoirs, which is very important for the exploration and development of unconventional gas reservoirs. This study analyzed the coupling effects of temperature (25, 50, and 75°C), effective stress (15 and 30 MPa), and pore pressure (0...

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