The Selection and Application of Filling Material Based on Long-Term Strength of Backfill Body

Abstract:

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High stress makes backfill body present the rheological properties in deep mine. This paper first uses RRTS-ⅢA to carry on creep test of specimen in different proportion, according to ε-t curves under different load levels to determine the specimen’s long-term strength, based on the exponential relationship of rock block and rock body, the long-term compressive strength is derived, combining with concrete parameters of working face, mixture ratios of filling material which meet long-term stability are selected, while analyzing the support resistance of backfill body. The results show that this design can effectively avoid the rheological instability of backfill body.

Info:

Periodical:

Advanced Materials Research (Volumes 239-242)

Edited by:

Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He

Pages:

3156-3160

DOI:

10.4028/www.scientific.net/AMR.239-242.3156

Citation:

B. J. Fu and M. Tu, "The Selection and Application of Filling Material Based on Long-Term Strength of Backfill Body", Advanced Materials Research, Vols. 239-242, pp. 3156-3160, 2011

Online since:

May 2011

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Price:

$35.00

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