CN211737212U - Underwater tunnel prevents gushing water installation fast - Google Patents

Abstract

The utility model discloses a tunnel prevents device of gushing water fast under water, include: the inflatable air bag is fixedly arranged on the side wall of the tunnel lining; the inflator pump is arranged outside the tunnel and used for inflating the air bag; and a plurality of restraining bands disposed on an exterior of the airbag for restraining the airbag in a compressed state. The utility model relates to a rapid water burst prevention device for an underwater tunnel, which is suitable for tunnels with various section shapes and solves the problems that the prior tunnel water retaining device occupies the tunnel clearance to influence the construction and transportation, is limited by the surrounding rock conditions, and is difficult to construct and remove; when the tunnel emergence gushes water accident, can open the air pump on ground and can form the breakwater, establish the wall that blocks up together through ground control is quick, convenient operation is swift, and rapid the drop into service stops the water potential and spreads, provides buffer time for speedily carrying out rescue work, guarantees the safety of work limit rear personnel's equipment.

Description

Underwater tunnel prevents gushing water installation fast

Technical Field

The utility model relates to a tunnel self safety device technical field especially relates to a tunnel prevents device of gushing water fast under water.

Background

The tunnel penetrating through the river and the sea is often an important node in a modern urban traffic system, and the most commonly adopted construction method of the current underwater tunnel mainly comprises the following steps: the mining method tunnel is widely applied to the field environment with deep water depth and complex geological conditions, and representative projects include mansion gate hang-an submarine tunnel, Qingdao jiao bay submarine tunnel and the like.

Different from a shield tunnel, the excavation surface of a mine-method underwater tunnel is open, when the mine-method underwater tunnel passes through a water-rich weak stratum or a rock stratum with crack development, a water gushing accident is easy to happen to the excavation surface, the construction progress is influenced slightly, and the safety of personnel and equipment in the tunnel is threatened seriously. When meeting the stratum condition, the method generally adopts grouting to reinforce and block water, and is assisted with a mechanical pumping and discharging method for pretreatment. However, due to uncertainty of underground engineering environment and different grouting reinforcement effects due to different time and place, the paraglider submarine tunnel and the jiao zhou bay submarine tunnel have excavation surface water gushing conditions with different degrees in the excavation process after grouting, so that at least one construction temporary water retaining device is generally arranged behind the excavation surface of the mine underwater tunnel to deal with the conditions.

The current conventional temporary water retaining device for construction is in the form that: at excavation face rear, one concrete wall is pour to the complete section of country rock to be connected with peripheral country rock through radial anchor rope (pipe), reserve the door opening on the wall and install singly open or two division steel construction door leafs, this door only can open towards excavation face direction one-way, and the door leaf is installed compressible sealing rubber strip with the door frame periphery. When the tunnel is normally constructed, the door leaf is in an open state; when the water inrush accident happens to the working face, the door leaf is closed to stop the incoming water. Such a water deflector has several limitations:

1) the door purlin invades the tunnel clearance to form the bottleneck of the transport vehicle;

2) in order to meet the sealing requirement, the concrete door purlin can only be driven by setting a threshold and obliquely building a steel plate bridge and the like, and if the door leaf is closed, heavy obstacles such as the steel plate bridge and the like need to be removed, the emergency efficiency is undoubtedly influenced;

3) the device is required to be arranged in a section with complete surrounding rock and high strength, and the position is not freely selected;

4) the later-period dismantling of the temporary construction is difficult;

5) the concrete door purlin pouring and steel structure door leaf welding manufacturing process is complex, and the manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can expand fast and realize stopping the underwater tunnel that the water potential stretchs through being full of the tunnel and prevent device of gushing water fast.

In order to achieve the above object, the utility model discloses a tunnel prevents gushing water device fast under water's concrete technical scheme does:

a quick anti-surge device for underwater tunnels comprises: the inflatable air bag is fixedly arranged on the side wall of the tunnel lining; the inflator pump is arranged outside the tunnel and used for inflating the air bag; and a plurality of restraining bands disposed on an exterior of the airbag for restraining the airbag in a compressed state.

The tunnel is longitudinally arranged, one end of the tunnel is communicated with an inflator pump, the other end of the tunnel is communicated with an air bag to be inflated, and the inflator pump inflates the air bag through the inflator pipe so as to expand the air bag.

Further, the air bag comprises a stressed framework, and the stressed framework is made of high-strength synthetic fiber fabric.

Furthermore, the inner surface and the outer surface of the air bag are both provided with rubber layers, and the expansion of the air bag is realized through the elasticity of the rubber layers.

Furthermore, the opening end of the air bag is fixed on the side wall of the tunnel lining through a bolt and a pressing plate.

Furthermore, the restraint strap is arranged in parallel to the axis of the tunnel, and two ends of the restraint strap are fixed on the pressing plate on the side wall of the tunnel lining through bolts.

Furthermore, the restraint strap is evenly provided with at least one row of mechanical holes, and the mechanical holes are arranged along the width direction of the strap.

The utility model discloses a tunnel prevents gushing water device fast under water's advantage lies in:

1) the water retaining device is suitable for tunnels with various section shapes, and solves the problems that the construction and transportation are influenced by the occupation of tunnel clearance by the conventional tunnel water retaining device, the construction and the removal are difficult and the like due to the limitation of surrounding rock conditions;

2) when a water burst accident occurs in the tunnel, the air pump can be started on the ground to form a water retaining wall, a blocking wall is quickly established through ground control, the operation is convenient and quick, the water retaining wall is quickly put into use, the water potential is blocked from spreading, the buffering time is provided for emergency treatment, and the safety of personnel and equipment behind a working edge is ensured;

3) the air bag can be folded and stored on the side wall of the tunnel, so that the clearance of the tunnel is not occupied, and the passing of construction transportation vehicles is not influenced; the tunnel can be stored in a non-working state, and the internal space of the tunnel is not occupied;

4) the removal is convenient after the tunnel is communicated, and the removal of the air bag is simpler and more labor-saving compared with the removal of concrete and steel structures;

5) the construction method has simple process and relatively lower cost.

Drawings

Fig. 1 is a side view of the water inrush preventing device of the present invention in a storage state;

fig. 2 is an axial view of a tunnel when the water inrush preventing device of the present invention is in a storage state;

fig. 3 is a side view of the water inrush preventing device of the present invention in an operating state;

fig. 4 is an axial view of a tunnel when the water inrush preventing device of the present invention is in an operating state;

FIG. 5 is a schematic view of a restraint belt according to the present invention;

fig. 6 is a schematic view of the edge of the airbag fixed by the bolts and the metal pressing plate according to the present invention.

In the figure: 1. lining the tunnel; 2. an air bag; 3. an inflation tube; 4. an inflator pump; 5. a restraint band; 6. a bolt; 7. pressing a plate; 8. and (4) mechanical holes.

Detailed Description

For better understanding the utility model discloses an aim at, structure and function, below combine the figure, right the utility model discloses a tunnel prevents gushing water device fast under water does further detailed description.

As shown in fig. 1 to 6, it shows that the utility model discloses a quick anti-surge device for underwater tunnel, reserved space by the tunnel lateral wall, includes inflator pump 4, restraint strap 5 and inflatable gasbag 2. The opening end of the air bag 2 is fixed on the side wall of the tunnel lining 1 through a pressure plate 7 and a bolt 6; the inflator pump 4 is arranged on the ground outside the tunnel and is used for inflating the air bag 2; the inflation tube 3 is arranged along the longitudinal direction of the tunnel, one end of the inflation tube is communicated with an inflation pump 4 on the ground, the other end of the inflation tube is communicated with the airbag 2 to be inflated, and the inflation pump 4 inflates the airbag 2 through the inflation tube 3; restraint straps 5 are provided on the exterior of the bladder 2 and are arranged parallel to the tunnel axis for restraining the bladder 2 in a compressed state.

The utility model provides an gasbag 2 has two kinds of states: firstly, in a compressed state, as shown in fig. 1 and 2, when no water burst accident occurs in the tunnel, the airbag 2 is folded after being deflated, and is attached and accommodated in the side wall reserved space by using the restraint strap 5, as shown in fig. 1 and 2; second, in the inflated state, as shown in fig. 3, when a water burst accident occurs in the tunnel, the inflator 4 on the ground is turned on, and compressed air enters the air bag 2 through the inflation tube 3 to inflate the air bag, so that the tunnel is filled with the empty water.

Further, the airbag 2 includes a stressed frame, which is a high-strength synthetic fiber fabric. In addition, the inner surface and the outer surface of the air bag 2 are both provided with rubber layers (preferably ethylene propylene diene monomer rubber layers), the expansion of the air bag 2 is realized through the elasticity of the rubber layers, as shown in fig. 4, the shape of the air bag 2 after being filled with air is consistent with the outline of the tunnel, and the air bag is tightly attached to the tunnel lining, as shown in fig. 4.

Further, the edge of the opening end of the air bag 2 is flatly laid on the side wall of the tunnel lining 1 and tightly pressed by a pressing plate 7, the thickness of the pressing plate 7 is 0.8-1.2 cm, the width of the pressing plate 7 is 2.8-3.2 cm (preferably a metal plate with the thickness of 1cm and the width of 3 cm), the pressing plate 7 is fixed on the side wall of the tunnel lining 1 through a bolt 6(M22 expansion bolt), and in addition, polyurethane sealant is smeared on the periphery of the annular pressure seam for secondary sealing.

Further, a plurality of restraining strips 5 (preferably of glass fiber) are provided outside the airbag 2, the restraining strips 5 being disposed parallel to the tunnel axis, and both ends being fixed to a platen 7 by bolts 6. When the air bag 2 is in a deflation state, the folded air bag is fixed in the reserved space of the side wall through at least three glass fiber restraint belts 5 parallel to the axis of the tunnel.

Further, at least one row of mechanical holes 8 are uniformly formed in the restraint belt 5, the mechanical holes 8 are arranged along the width direction of the restraint belt 5, when the airbag 2 is inflated, the restraint belt 5 is pulled along with the mechanical holes, and finally the mechanical holes are broken along the arrangement direction of the mechanical holes, so that restraint is finished.

The following description is combined with the accompanying drawings to describe the working process of the rapid water burst preventing device for the underwater tunnel of the utility model:

when the tunnel is in a normal use state, the air bag 2 is deflated, folded and compressed and fixed in the reserved space of the side wall of the tunnel through the restraint band 5.

When a tunnel has water burst accident, the inflator pump 4 inflates the air bag 2 through the inflation tube 3, the restraint strap 5 is broken under tension after the air bag 2 is expanded, and the air bag 2 is filled in the tunnel to fill the clearance

The utility model relates to a rapid water burst prevention device for an underwater tunnel, which is suitable for tunnels with various section shapes and solves the problems that the prior tunnel water retaining device occupies the tunnel clearance to influence the construction and transportation, is limited by the surrounding rock conditions, and is difficult to construct and remove; when a water burst accident occurs in the tunnel, the air pump can be started on the ground to form a water retaining wall, a blocking wall is quickly established through ground control, the operation is convenient and quick, the water retaining wall is quickly put into use, the water potential is blocked from spreading, the buffering time is provided for emergency treatment, and the safety of personnel and equipment behind a working edge is ensured; the air bag can be folded and stored on the side wall of the tunnel, so that the clearance of the tunnel is not occupied, and the passing of construction transportation vehicles is not influenced; the tunnel can be stored in a non-working state, and the internal space of the tunnel is not occupied; the removal is convenient after the tunnel is communicated, and the removal of the air bag is simpler and more labor-saving compared with the removal of concrete and steel structures; the construction method has simple process and relatively lower cost.

The present invention has been further described with reference to specific embodiments, but it should be understood that the specific description herein should not be construed as limiting the spirit and scope of the present invention, and that various modifications to the above-described embodiments, which would occur to persons skilled in the art after reading this specification, are within the scope of the present invention.

Claims (7)

1. The utility model provides a tunnel prevents device that gushes water fast under water which characterized in that includes:

an inflatable air bag (2) fixedly arranged on the side wall of the tunnel lining (1);

the inflator pump (4) is arranged outside the tunnel and is used for inflating the airbag (2); and

and a plurality of restraining bands (5) provided outside the airbag (2) for restraining the airbag (2) in a compressed state.

2. The water burst preventing device according to claim 1, further comprising an inflating tube (3) arranged along the longitudinal direction of the tunnel, one end of the inflating tube being communicated with an inflating pump (4) and the other end being communicated with the air bag (2) to be inflated, the inflating pump (4) inflating the air bag (2) through the inflating tube (3) to expand the air bag.

3. The surge arrester of claim 1 wherein the air bag (2) includes a stressed frame of high strength synthetic fabric.

4. The surge arrester of claim 1 or 3 wherein the inner and outer surfaces of the air bag (2) are provided with rubber layers, the elasticity of which is used to expand the air bag (2).

5. The device according to claim 1, characterized in that the open end of the air bag (2) is fixed on the side wall of the tunnel lining (1) by bolts (6) and a pressure plate (7).

6. The device according to claim 1, characterized in that the restraining strip (5) is arranged parallel to the tunnel axis and is fixed at both ends by means of bolts (6) to pressure plates (7) on the side walls of the tunnel lining (1).

7. The surge arrester of claim 1 or 6 wherein the restraining strip (5) is uniformly provided with at least one row of mechanical holes (8), the mechanical holes (8) being arranged along the width of the restraining strip (5).

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