考虑盲管排水和防水板隔水的隧道支护体系分担水荷载解析解

doi:10.13722/j.cnki.jrme.2013.1830

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Abstract The drainage of blind tube and isolation effect of waterproof board are two key scientific problems for tunnels in water-bearing stratum during construction. Analytical formula was derived based on drainage of blind tube and isolation effect of waterproof board. It involves the seepage field and water pressure ratio of support systems by considering the drainage of blind tube and isolation effect of waterproof board. The concept of blind tube hydraulic conductivity is introduced. The interactions among drain discharge，waterproof board and supporting system are obtained quantitatively. It can be applied for active control of drainage with blind pipe. The law of bearing water load of supporting system is studied under condition of different hydraulic conductivities of blind tube. In terms of Qilianshan tunnel on high-speed railway，the relationships are determined among drainage with blind pipe，external water pressure of lining and reduction factors. It could implement active drainage with blind pipe and accord with actual situation. Rational thickness and permeability coefficients of grouting reinforced region are put forward. With increasing water pressure，unfavorable position of lining transfers from arch to invert. Shearing-compression failure appears at wall-footing. Flexural failure takes place at invert as well. The ultimate bearing capacity of lining has been determined. Not only is it fit for deep tunnel in water-bearing stratum，but can be as reference for similar engineering.

Key words： tunnel engineering water loading analytical solution support system drainage of blind tube isolation of waterproof board

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	Articles by authors
	HE Benguo1
	2
	ZHANG Zhiqiang1
	2
	FU Shaojun3
	LIU Yunjun1
	2

Cite this article:

HE Benguo1,2,ZHANG Zhiqiang1, et al. AN ANALYTICAL SOLUTION OF WATER LOADING ON TUNNEL SUPPORTING SYSTEM WITH DRAINAGE OF BLIND TUBE AND ISOLATION EFFECT OF WATERPROOF BOARD[J]. , 2015, 34(S2): 3936-3947.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2013.1830 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/IS2/3936

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