金矿超深立井含水围岩注浆加固的应力场和渗流场研究

doi:10.13722/j.cnki.jrme.2020.0271

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Abstract In order to meet with the development of ultra-deep mine shaft construction，the conflicts and tough technical problems existing in design and construction are discussed，and the aim and strategy of the solution based on the elastic state and theory of deep shaft lining design and construction are put forward in introduction. Based on Darcy¢s seepage law，Terzaghi¢s effective stress principal and continuous medium elasticity theory，the mathematical model of coupled seepage and stress fields under grouting consolidation in deep gold mine shafts is studied, and the expressional formulas of seepage and effective stress fields are deduced. Comparison with the numerical method verifies the accuracy of the implicit analytical expressions. By using graphical method，is the effects of the grouting radius，the permeability，the possion¢s ratio and the elastic modulus of grouting area on seepage and effective stress fields are discussed. A case study on Xincheng new main shaft in Shandong province，China，is illustrated, presenting the controlling design method of grouting consolidation based on the grouting radius and the seepage conductivity. It is shown that enlarging the grouting radius or decreasing the seepage conductivity of and the Possion¢s ratio can decrease the effective stress of grouting and surrounding rock，which is benefit to enhance the stability of shafts and to decrease the water flow to the shafts. The research results could provide a theoretical reference for designers and constructors.

Key words： mining engineering ultra-deep shaft gold mine shaft coupled fluid and solid shaft grouting rock seepage effective stress

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	Articles by authors
	ZHOU Xiaomin1
	2
	XU Yan1
	2
	LIU Shujie1
	HE Xiaonan1

Cite this article:

ZHOU Xiaomin1,2,XU Yan1, et al. Research on stress and seepage fields of surrounding rock grouting of ultra-deep shafts of gold mines[J]. , 2020, 39(8): 1611-1621.

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http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2020.0271 OR http://rockmech.whrsm.ac.cn/EN/Y2020/V39/I8/1611

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