Numerical Simulation and Optimization of Hole Spacing for Cement Grouting in Rocks | Zendy

Fu Ping | Zendy; Jinjie Zhang | Zendy; Zhanqing Xing | Zendy; Xiaodong Yang | Zendy

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Numerical Simulation and Optimization of Hole Spacing for Cement Grouting in Rocks

Author(s) -

Fu Ping,

Jinjie Zhang,

Zhanqing Xing,

Xiaodong Yang

Publication year - 2013

Publication title -

journal of applied mathematics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.307

H-Index - 43

eISSN - 1687-0042

pISSN - 1110-757X

DOI - 10.1155/2013/135467

Subject(s) - grout , geotechnical engineering , rock mass classification , geology , computer simulation , rheology , foundation (evidence) , permeability (electromagnetism) , cement , materials science , mechanics , law , composite material , physics , membrane , biology , political science , genetics

The fine fissures of V-diabase were the main stratigraphic that affected the effectiveness of foundation grout curtain in Dagang Mountain Hydropower Station. Thus, specialized in situ grouting tests were conducted to determine reasonable hole spacing and other parameters. Considering time variation of the rheological parameters of grout, variation of grouting pressure gradient, and evolution law of the fracture opening, numerical simulations were performed on the diffusion process of cement grouting in the fissures of the rock mass. The distribution of permeability after grouting was obtained on the basis of analysis results, and the grouting hole spacing was discussed based on the reliability analysis. A probability of optimization along with a finer optimization precision as 0.1 m could be adopted when compared with the accuracy of 0.5 m that is commonly used. The results could provide a useful reference for choosing reasonable grouting hole spacing in similar projects

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