Reinforcing structure of high-speed rail tunnel bottom water passing karst cave and construction method of reinforcing structure

A technology for strengthening structures and water-karst caves, which is applied in tunnels, tunnel linings, and earth-moving drilling and mining, etc., can solve the problem of high safety risks in tunnel bottom cavern construction, achieve good drainage, improve construction progress, and reduce construction time.

Active Publication Date: 2018-04-13
中国建筑土木建设有限公司
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to provide a reinforcement structure and construction method for a water-type karst tunnel at th

Method used

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  • Reinforcing structure of high-speed rail tunnel bottom water passing karst cave and construction method of reinforcing structure
  • Reinforcing structure of high-speed rail tunnel bottom water passing karst cave and construction method of reinforcing structure
  • Reinforcing structure of high-speed rail tunnel bottom water passing karst cave and construction method of reinforcing structure

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Example Embodiment

[0038] Examples see Figure 1-5 As shown, the high-speed rail tunnel is excavated from left to right. There is a karst cave at the bottom of the high-speed rail tunnel. The contour line 11 of the high-speed rail tunnel, the left wall line 24 of the high-speed rail tunnel, the right wall line 25 of the high-speed rail tunnel, the left line 21 of the high-speed rail line, the center line of the tunnel 22 and High-speed rail line right line 23 such as figure 1 Shown. The high-speed rail tunnel and cave space overlap.

[0039] The reinforcement structure for this kind of karst cave includes high-speed rail tunnels and karst caves located in the surrounding rock below the high-speed rail tunnel, as well as the construction slope channel 13 excavated at the entrance of the karst cave and the excavation between the top of the karst cave 1 and the bottom of the high-speed rail tunnel 2. Slag discharge shaft 3. The construction ramp channel 13 is located between the high-speed rail line ...

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Abstract

The invention discloses a reinforcing structure of a high-speed rail tunnel bottom water passing karst cave and a construction method of the reinforcing structure. The reinforcing structure comprisesthe karst cave, a construction slope channel, a deslagging vertical shaft, a shotcrete-bolting-mesh supporting layer and an arch culvert. The shotcrete-bolting-mesh supporting layer comprises an anchor rod, a rebar hanging net and a concrete jetting layer, the arch culvert comprises an arch culvert foundation, an arch culvert side wall and an arch culvert arch ring, and the construction slope channel, the deslagging vertical shaft and a culvert body in the outer portion of the arch culvert are compacted by adopting backfilled concrete. The construction method comprises the steps of karst caveexcavation, karst cave cleaning, deslagging vertical shaft excavation, deslagging construction, arch culvert construction, karst cave backfilling and the like. According to the reinforcing structure,the structure is stable and reliable, the water draining effect is good, the construction safety can be ensured, and the reinforcing structure is suitable for high-speed rail tunnel bottom water passing type karst treatment, particularly karst with water and a certain size and scale.

Description

technical field [0001] The invention belongs to the field of tunnel reinforcement, in particular to a reinforcement structure and a construction method of a water-through karst at the bottom of a high-speed railway tunnel. Background technique [0002] In the process of tunnel construction, the karst cave makes the construction dynamics of the tunnel more complicated, which can easily cause excessive concentration of stress in the surrounding rock, increase the amount of deformation around the tunnel, and may cause the collapse and loss of local surrounding rock during tunnel excavation, affecting Tunnel construction directly endangers the safety of construction personnel and mechanical equipment. However, the water-through karst cavity with a certain scale and scale not only affects the structural stability of the tunnel, endangers the safety of the tunnel construction, affects the progress of the tunnel construction, but also causes groundwater due to improper treatment su...

Claims

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Application Information

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IPC IPC(8): E21D9/00E21D11/10E21D11/15E21D20/00
CPCE21D9/00E21D11/10E21D11/152E21D20/00
Inventor 龙廷于忠永翟朝晖
Owner 中国建筑土木建设有限公司
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