Research on Loose Circle Test of Deep Broken Roadway

Feng Zhan Cui; Hua Jun Xue; Tian Yu He; Tao Tao Li; Jin Jing Zuo; Xi Guan

doi:10.4028/www.scientific.net/AMM.638-640.904

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 638-640Research on Loose Circle Test of Deep Broken...

Research on Loose Circle Test of Deep Broken Roadway

Abstract:

To control the stability of deep well broken surrounding rock, single-hole sonic method is used to test the loose circle of-1180 east-rock main roadway and its damage range. The study indicates the loose circle is about 1.8 ~ 2.2 m, which is typical large loose circle. And its button is slightly larger than two sides’, right side slightly larger than left. The roadway rock has some engineering features of soft rock. The broken and expand deformation of loose circle does large, difficult to support. Combined support is usually used in this rock condition.

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Periodical:

Applied Mechanics and Materials (Volumes 638-640)

Pages:

904-907

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.638-640.904

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Online since:

September 2014

Authors:

Feng Zhan Cui*, Hua Jun Xue, Tian Yu He, Tao Tao Li, Jin Jing Zuo, Xi Guan

Keywords:

Combined Supporting, Damage Range, Deep Crushing Roadway, Loose Circle Test, Single-Hole Sonic Method

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References

[1] Fangting Dong, Hongwei Song. Roadway Surrounding Rock Loose Circle Supporting Theory [J]. Journal of China Coal Society. 1994(2): 21-31.

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[2] Fangting Dong, Shoumin Lu, Shutang Gao. State of Roadway Surrounding Rock and Supporting Theory and Theory of Soft Rock Supporting [J]. Ground Pressure and Strata Control. 1987(2): 12-15.

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