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Study of Slope Reinforcement Force Based on FLAC 被引量:8
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作者 HUANG Xian-wu MAO xian-biao +1 位作者 MIAO Xie-xing CHEN Zhan-qing 《Journal of China University of Mining and Technology》 EI 2006年第2期123-127,共5页
A slope will slide if the unbalanced force does not tend to zero when the stability of the slope is analyzed with the help of FLAC. Thus the ultimate reason of slope sliding is the unbalanced force determined by FLAC.... A slope will slide if the unbalanced force does not tend to zero when the stability of the slope is analyzed with the help of FLAC. Thus the ultimate reason of slope sliding is the unbalanced force determined by FLAC. The slope will remain stable if the unbalanced force is counterbalanced by a reinforcement force which is produced by a suitable reinforcement method. In this paper, the stability of the slope was analyzed by using FLAC, and the unbalanced force of the slope was obtained through the FISH function in FLAC. According to the equilibrium conditions, the relationship between the reinforcement force and unbalanced force was derived and accordingly the reinforcement force was determined. The reinforcement design was adopted by using pre-stressed anchor bars on the basis of the reinforcement force. An example is used to show that the effect of slope reinforcement based on the reinforcement force is safe and economical. The method doesn't need to suppose a sliding surface to obtain the reinforcement force, and it is also clear in physical meaning. So this method realized the organic unification of the stability analysis and the slope reinforcement. 展开更多
关键词 slope reinforcement reinforcement force unbalanced force stability analysis pre-stressed anchor bar.
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Experimental Study of Seepage Properties of Non-Darcy Flow in Granular Coal Gangues 被引量:4
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作者 MIAO Xie-xing LI Shun-cai +1 位作者 HUANG Xian-wu CHEN Zhan-qing 《Journal of China University of Mining and Technology》 EI 2006年第2期105-109,共5页
By using the steady-state seepage method, a patent seepage device together with the MTS815.02 Rock Mechanics Test System is used to test the seepage properties of non-Darcy flow in a granular gangue with five differen... By using the steady-state seepage method, a patent seepage device together with the MTS815.02 Rock Mechanics Test System is used to test the seepage properties of non-Darcy flow in a granular gangue with five different grain sizes during the compaction. The experimental results show that the seepage properties are not only related to the stress or displacement level, but also to the grain size, the pore structure of the granular gangue, and the current porosity The permeability and the non-Darcy flow coefficient can be fitted respectively by the cubic polynomials and the power functions of the porosity, Formally, the flow in granular gangue satisfies the Forchheimer's binomial flow, but under the great axial and confining pressure and owing to the grain's crushing, the flow in granular gangues is different from that in rock-fills which are naturallv oiled un. As a result, the non-Darer flow coefficient may be negative. 展开更多
关键词 granular coal gangue COMPACTION seepage properties Forchhelmer s binomial flow non-Darcy flow coefficient
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