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Bridging plugging device in hidden-type deep, long and large cave and governance method for water burst plugging

A technology for plugging devices and karst caves, which can be used in vertical shaft equipment, earthwork drilling, wellbore lining, etc. It can solve the problems that there are no good treatment methods for karst caves, and achieve the effect of eliminating threats and reducing waste

Active Publication Date: 2016-02-03
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no good treatment method for this kind of cave.

Method used

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  • Bridging plugging device in hidden-type deep, long and large cave and governance method for water burst plugging
  • Bridging plugging device in hidden-type deep, long and large cave and governance method for water burst plugging
  • Bridging plugging device in hidden-type deep, long and large cave and governance method for water burst plugging

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0044] Such as figure 1 As shown, a concealed bridging and sealing device in a deep and long karst cave includes a grouting pipe whose bottom spans the karst cave, and a plurality of overflow holes 16 are opened on the side wall of the lower part of the grouting pipe, and the grouting pipe 14 The outside is provided with an expandable bridge bag 17 that covers the overflow hole 16, and the two ends of the bridge bag 17 are fastened to the grouting pipe 14 by fasteners. The setting of the bridge bag 17 facilitates the insertion of the grouting pipe 14 into the tunnel On the surrounding rock 5, after the grouting pipe 14 is fixed, grout is injected into the bridge pocket 17 through the overflow hole of the grouting pipe 14, and the bridge pocket 17 expands and becomes larger with the flow of the grout, because the grouting pipe spans The deep and long ka...

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Abstract

The invention discloses a bridging plugging device in a hidden-type deep, long and large cave and a governance method for water burst plugging. The device comprises a grouting tube of which the bottom part is stretched across the cave, a grout vent hole is disposed in the side wall of the lower part of the grouting tube, an expansible bridge bag covering the grout vent hole is disposed outside the grouting tube, and two ends of the bridge bag are fastened on the grouting tube by fasteners. The bridging plugging device in the hidden-type deep, long and large cave and the governance method for the water burst plugging disclosed by the invention are beneficial in that after a grouting material is poured into the bridge device in the plugging device, the grouting material and the bridge bag are consolidated into a whole, a water blocking bridge is formed in the deep, long and large cave to form a water blocking shield, and an isolation belt isolating water burst is formed; by pouring a highly expanding material, clearance between the water blocking bridge and the cave is blocked; cement mortar is finally used for thorough blocking and reinforcement; and the whole structure can ensure water blocking and reinforcement effects, can reduce or even thoroughly eliminate threats brought by underground water to safe tunnel operation, and can also reduce wasting of the grouting material. The bridging plugging device in the hidden-type deep, long and large cave and the governance method for the water burst plugging are both economic and safe.

Description

technical field [0001] The invention relates to a concealed deep and long karst cave bridging and sealing device and a water gushing treatment method, which belong to the field of grouting and water blocking. Background technique [0002] In tunnel construction, especially when tunnels are excavated in strata with strong karst development, large-scale karst caves are often encountered. These karst caves are often filled with groundwater or become the main water storage structure or water guide channel for groundwater to gushes into the tunnel. Because it is a concealed cave, unlike the exposed cave, it can be effectively avoided or treated by conventional methods such as wall isolation, pumping and even grouting. Concealed karst caves have small or even invisible openings in the tunnel, but the karst cave has a strong ability to communicate with the outside world, and the cavity is large. It is difficult for the conventional grouting sealing method to keep the grout in the ...

Claims

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Application Information

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IPC IPC(8): E21D11/38E21D11/10
Inventor 潘光明张庆松李术才张霄杨磊闫成伟
Owner SHANDONG UNIV
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