Study of finite fracture of the micro contact on the friction interface induced by stress waves

Liu, Yonggui; Shen, Liang; Hui, Mengmeng; Yang, Qian; Wang, Tinghui

doi:10.1016/j.engfracmech.2022.109027

Cited by 4 publications

(1 citation statement)

References 37 publications

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“…Yan J et al [13] conducted a study of axisymmetric wave propagation and attenuation in submarine fluid-filled pipelines and applied the propagation characteristics to the leakage detection of buried pipelines, and established the coupled equations of submarine fluid-filled pipelines to discuss the vibrational wave attenuation characteristics to obtain the attenuation affected by the pipeline material as well as the internal and external fluid fields; Gao et al [14] simulated the coupling between soil seepage fields by proposing a flow-pipe-seepage sequential coupled finite element analysis model (FEM) model for buried pipelines, and obtained the critical hydraulic gradient for the tilted infiltration damage in the direction of the sandy soil tangent to the pipeline; Havenith [15] and others used finite element numerical analysis and found a strong correlation between amplification of vibration waves and strain localization; Liu He et al [16] investigated the attenuation of stress waves generated by impacts and analyzed that the propagation speed of stress waves in pipelines is closely related to their physical properties.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Attenuation Law of Vibration Wave Propagation in Natural Gas Wells in Coal-Gas Cross-Mining Area

Lei,

Wang,

Yang

et al. 2023

WJET

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Aiming at the safety distance between coal mining working face and natural gas wells in the cross-mining area of multiple mineral resources, the crossmining area of gas and coal resources in the Ordos Basin is taken as the engineering background. An anti-collision early warning technology method based on vibration wave propagation attenuation monitoring is proposed to prevent collision accidents between road headers and natural gas wells. Through the steel pipe and steel pipe concrete knocking vibration test and underground digging vibration test, the research results show that: The exponential decay coefficients of the vibration wave in steel pipe, steel pipe concrete and coal rock respectively are 0.1, 0.1140 and 0.03, which are all in accordance with the exponential decay law, and the vibration wave firstly decays sharply and then decays slowly; the formula for the distance from the road header to the natural gas well was derived based on the vibration attenuation formula, to provide a new method for realizing the problem of precise and coordinated extraction by surface monitoring of the distance from down hole road headers to gas wells, collision prevention prediction and warning and prevention of collision of extraction equipment with gas wells.

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