基于宾汉姆流体的微裂隙岩体注浆扩散影响机制分析

doi:10.13722/j.cnki.jrme.2016.0792

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Abstract Based on the standard joint surface profile of Barton model，geometry model of fracture was constructed，and the finite element model was established by using Navier-stokes equation and considering grout as Bingham fluid. Grout spreading process was simulated and the influence on grout spreading process from fracture roughness，fracture gap width and grout viscosity was acquired. Results show that，when grout viscosity is high，the energy loss is mainly caused by viscosity force. The equivalent gap width increases nonlinearly with grout viscosity. When fracture roughness is constant，the equivalent gap width increment curve has an inflection point. With fracture roughness increasing，the inflection point move forward gradually. A fitting formula was proposed between equivalent gap width and fracture roughness through multiple function fitting with a quite accuracy. Research result may provide some reference to fracture rock grouting theory.

Key words： rock mechanics grout spreading equivalent gap width roughness coefficient numerical analysis

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	GAO Shengyuan1
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GAO Shengyuan1,2. Analysis on spreading mechanism of fractured rock grouting process based on Bingham fluid[J]. , 2016, 35(S2): 3492-3500.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2016.0792 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/IS2/3492

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