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Tunnel water gushing treatment structure and construction method thereof

A construction method and technology for controlling structures, which are applied in the directions of drainage, earthwork drilling, safety devices, etc., can solve problems such as damage to side wall support, flood damage, hollowing out and collapse of surrounding rock structures, etc., achieving low cost, easy construction, good effect

Active Publication Date: 2013-11-27
CENT SOUTH UNIV
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Problems solved by technology

[0004] In order to overcome the fact that the existing tunnel water gushing treatment technology cannot control the water flow after the blockage, and then cause uncontrollable water disasters, it is impossible to fundamentally solve the problem of tunnel water gushing, and there are a lot of potential safety hazards; No filtering device is installed at the water head, so that the fine particles in the surrounding rock of the tunnel will flow out, resulting in local voiding and collapse of the broken surrounding rock structure, destroying the support of the side wall, and affecting the stability of the water gushing part and its surroundings of the tunnel. The present invention aims to Provide a tunnel water gushing treatment structure and its construction method, the water gushing treatment structure can lead out the gushing water smoothly, and ensure the stability of the tunnel structure

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  • Tunnel water gushing treatment structure and construction method thereof
  • Tunnel water gushing treatment structure and construction method thereof

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Embodiment Construction

[0035] A tunnel water gushing treatment structure, such as figure 1 , figure 2 with image 3 As shown, the tunnel is a split tunnel structure, the right line of the tunnel is 1520 m long, the left line is 1511.7 m long, and the single-hole clearance is 10. 25 m x 5. 5 m. The gushing water column is jet-shaped, with a diameter of 40-50 mm, a length of 4 m, a height of 8 m, and a flow rate of 55 m3 / h. The surrounding rocks in the gushing face are dilotic quartz schist interbedded with biotite chlorite plagioclase , the rock mass is broken and fractures are developed, which belongs to the structure of fault compression zone. Therefore, the culvert pipe 3 is buried at the water head to control the water flow direction, the broken surrounding rock around the culvert pipe is replaced with gravel 2 to filter the sediment, and the soft foundation at the foot of the wall is replaced with poured concrete; Reinforce the lining to prevent invisible damage caused by water gushing; dril...

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Abstract

The invention discloses a tunnel water gushing treatment structure and a construction method thereof and aims at solving the problem of potential risks to tunnels due to the existing tunnel water gushing treatment technology. The tunnel water gushing treatment structure comprises a guide separating device for preventing flow diffusion, the water inlet end of the guide separating device is arranged at the position of a tunnel water gushing head, the water outlet end is disposed on an inverted arch surface, a plurality of rows of grouting pipe groups are arranged annularly with the water gushing position serving as the center, and the length direction of each row of grouting pipe group is consistent with the gushed water flow direction. The tunnel water gushing treatment structure ensures the tunnel water gushing position and surrounding rock to be stable and is easy to construct, good in effect and low in construction cost.

Description

technical field [0001] The invention relates to a tunnel water gushing treatment structure and a construction method thereof. Background technique [0002] Tunnel construction is affected by various unfavorable geological disasters, among which water inrush and gushing are frequent problems in tunnel construction in water-rich areas. Long-term water gushing in tunnels will damage the ecological environment, lead to deterioration of construction conditions, threaten tunnel lining safety during operation, and even induce engineering geological disasters. Therefore, it is of practical significance to study tunnel water gushing control. [0003] Traditional tunnel water gushing treatment adopts sealing method and drainage method. Although the traditional sealing method can block the water gushing, the water flow is easy to spread and run around, causing uncontrollable water disasters, and the water gushing is easy to cause fine particles in the surrounding rock of the tunnel to...

Claims

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Application Information

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IPC IPC(8): E21F16/02
Inventor 邹金锋李亮赵炼恒但汉成谢荣福李帅帅程肖许渊
Owner CENT SOUTH UNIV
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