Numerical Analysis on Tunnel Support Nearly Mined Area and Stability Evaluation

Abstract:

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Since deformations of tunnel nearly mined area are larger, the reasonable support is very important. According to a side working face tunnel nearly mined area in one Mine, FLAC 2D was applied to numerical analyze on two type bolt net supported tunnel of “short bolt and long anchor cable” and “full anchor cable”. The results showed as follows: (1) plastic region of surrounding rock relatively large, which supported by short bolt and long anchor cable. Displacement reaches 27cm, the effect of this type supporting not significant; (2) The supporting of full anchor cable can effectively control deformation of tunnel, displacement less than 5cm, plastic region of surrounding rock also less than 2.3m. So, the supporting of full anchor cable can meet operating requirements.

Info:

Periodical:

Advanced Materials Research (Volumes 255-260)

Edited by:

Jingying Zhao

Pages:

3749-3753

DOI:

10.4028/www.scientific.net/AMR.255-260.3749

Citation:

W. J. Yu "Numerical Analysis on Tunnel Support Nearly Mined Area and Stability Evaluation", Advanced Materials Research, Vols. 255-260, pp. 3749-3753, 2011

Online since:

May 2011

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Price:

$35.00

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