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Tunnel gushing roof fall door closing treatment method

A technology of sudden surge and tunnel, which is applied in the field of tunnel sudden surge and roof collapse, can solve problems such as loss, sudden surge and roof fall, and achieve the effect of strong applicability, short construction period and rapid construction.

Active Publication Date: 2021-03-16
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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AI Technical Summary

Problems solved by technology

[0003] At present, TBM excavation is widely used in the tunnel construction process; however, due to geological influences, when excavation construction passes through unfavorable geological sections, sometimes engineering problems such as surge and roof fall may be encountered
What's more serious is that in the process of TBM construction, if there is an emergency of tunnel surge and roof fall and door closing, if it is not handled in time or handled improperly, it will cause huge irreparable losses.

Method used

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  • Tunnel gushing roof fall door closing treatment method
  • Tunnel gushing roof fall door closing treatment method
  • Tunnel gushing roof fall door closing treatment method

Examples

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Embodiment 1

[0039] Embodiment 1: Application example of tunnel surge and roof fall and door closing treatment

[0040] Project overview: The Gaoligongshan Tunnel of the Dali-Sui Railway is located in the section from Nujiang Station to Longling Station, with a total length of 34.538km. The whole tunnel is located in a straight line. The longitudinal slope of the line in the tunnel is a herringbone slope with a maximum gradient of 23.5‰; the maximum buried depth of this tunnel is 1155m.

[0041] The auxiliary tunnel of this tunnel is set as "1 level + 1 slope + 2 vertical", and the whole tunnel is divided into 5 work areas including the entrance, the No. 1 inclined shaft, the No. 1 shaft, the No. 2 shaft and the exit. Among them, the exit work area is the TBM work area, and the main tunnel and the horizontal guide are mainly constructed by TBM. The difficult section of TBM construction and the entrance section are constructed by drilling and blasting method, and the TBM is passed through ...

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Abstract

The invention discloses a tunnel gushing roof fall door closing treatment method. Accidents such as tunnel gushing roof fall door closing can be effectively dealt with timely, disaster loss can be reduced to the maximum extent and TBM construction is smoothly recovered. The tunnel gushing roof fall door closing treatment method mainly comprises the steps of emergency treatment of the ground surface, emergency treatment in a tunnel, permanent treatment of the ground surface, staged desilting of a gushing body, arrangement of a circuitous pilot tunnel and a high-position working chamber, treatment of a gushing roof fall breach, treatment of an influence range and the like. The tunnel gushing roof fall door closing treatment method is short in construction period, clear in construction organization, high in applicability and suitable for rapid construction and cost control of the TBM after the gushing roof fall door is closed.

Description

technical field [0001] The invention relates to the technical field of TBM construction, in particular to a method for treating tunnel surge and roof fall and door closing. Background technique [0002] tunnel boring machine ( Tunnel Boring Machine , TBM) is a comprehensive equipment that uses mechanical rock breaking, slag removal and support for continuous operation. TBM construction has the following advantages: 1. High excavation efficiency: continuous operation can ensure one-stop operation of rock breaking, slag removal and support; especially in long-distance construction in stable surrounding rock, the advantages are more obvious; 2. Excavation Less over-excavation, better construction quality: less over-excavation, smooth inner wall, no concave-convex phenomenon, lower support engineering volume, and lower engineering cost; 3. Small disturbance to rock: it can improve the construction conditions of the excavation surface; the surrounding rock formations are stable,...

Claims

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Application Information

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IPC IPC(8): E21F16/02E21F17/103E21D11/10E21D11/14E02D19/06E02D15/00E02D17/18
CPCE21F16/02E21F17/103E21D11/10E21D11/14E02D19/06E02D15/00E02D17/18Y02E10/20
Inventor 王亚锋马亮李福才胡新朋邢迅轲郑清君陈阳曹耀祖宿源麟刘飞车大兵李红
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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