基于突变理论和监测位移的地下洞室稳定评判方法

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Abstract Based on monitoring displacement and catastrophe theory，a new rapid and simply quantitative criterion is proposed to assess the stability of surrounding rock. The nonlinear dynamic-cusp catastrophe model is established. According to the instability catastrophe criterion(catastrophe feature value D≤0)，catastrophe displacement rate is calculated. The stable displacement rate is determined and the ratio of displacement rate is calculated by using stability criterion(D＞0). According to the method，the judgment quantitative criterion for main power house (or main-transformed cavern) is put forward，which is that the stability displacement rate，catastrophe displacement rate and the ratio of displacement rate are 0.4(or 0.2) mm/d，9.0(or 2.5) mm/d and 18%(or 14%)，respectively. The judgment quantitative criterion is applied to assess the surrounding rock stability of large-scale project. The rationality and effectiveness of the judgment method and quantitative criterion are validated，which can provide reference for the similar project.

Key words： tunnelling engineering underground cavern catastrophe theory nonlinear dynamic model monitoring displacement

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	MA Sha1
	XIAO Ming2

Cite this article:

MA Sha1,XIAO Ming2. JUDGMENT METHOD FOR STABILITY OF UNDERGROUND CAVERN BASED ON CATASTROPHE THEORY AND MONITORING DISPLACEMENT[J]. , 2010, 29(S2): 3812-3819.

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https://rockmech.whrsm.ac.cn/EN/Y2010/V29/IS2/3812

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