NL2028605B1 - Temporary supporting device for emergency rescue in tunnel engineering - Google Patents

Abstract

Described is a temporary supporting device for emergency rescue in tunnel engineering, comprising: a supporting sleeve (100), comprising a retractable top inner sleeve (101) and a bottom outer sleeve (102); a grouting pipe (200), which is located in the supporting sleeve (100) and comprises a retractable top inner grouting pipe (201) and a bottom outer grouting pipe (202); a supporting skeleton (300) which is a supporting rod structure, which is annularly hinged with the top end of the top inner sleeve (101) at one end, outwards extended and diverged at the other end and connected to the bottom outer sleeve (102) through a steel strand (301); an inflating bag body (400) which is partially fixed on the top of the supporting skeleton (300), surrounded outside the supporting sleeve (100) and provided with a fluid filling hole (401); and a limiting block (500) which is located at a joint between the top inner sleeve (101) and the supporting skeleton (300) and used for limiting the expansion angle of the supporting skeleton (300).

Description

TEMPORARY SUPPORTING DEVICE FOR EMERGENCY RESCUE IN TUNNEL

ENGINEERING Technical Field The utility model relates to the technical field of emergency rescue support, in particular to a temporary supporting device for emergency rescue in tunnel engineering. Background In case of water inrush and collapse in the process of excavation and construction in tunnel engineering, serious consequences may be caused without timely plugging. At present, the countermeasures generally include reserve of sandbags, cement, polyurethane and other materials. By tight accumulation, water plugging material is injected into gaps. In case of large- scale water gushing and collapse, the traditional plugging mode is difficult to plug the full section of a tunnel in a short time relying on manual transportation; constructors are at risk, and there is a huge safety threat to the existing tunnels. In view of this, the problem to be urgently solved by those skilled in the art is how to provide a temporary supporting device for emergency rescue in tunnel engineering.

Summary Therefore, the purpose of the utility model is to propose a temporary supporting device for emergency rescue in tunnel engineering to solve the problems of excavation and construction supporting modes of the existing tunnel engineering.

The utility model provides a temporary supporting device for emergency rescue in tunnel engineering, comprising: a supporting sleeve, comprising a retractable top inner sleeve and a bottom outer sleeve; a grouting pipe, which is located in the supporting sleeve and comprises a retractable top inner grouting pipe and a bottom outer grouting pipe; a supporting skeleton which is a supporting rod structure, which is annularly hinged with the top end of the top inner sleeve at one end, outwards extended and diverged at the other end and connected to the bottom outer sleeve through a steel strand; an inflating bag body which is partially fixed on the top of the supporting skeleton, surrounded outside the supporting sleeve and provided with a fluid filling hole; and a limiting block which is located at a joint between the top inner sleeve and the supporting skeleton and used for limiting the expansion angle of the supporting skeleton.

It is known from the above technical solution that, compared with the prior art, the utility model discloses and provides the temporary supporting device for emergency rescue in tunnel engineering. The top inner sleeve and the bottom outer sleeve are retractable; the top inner grouting pipe and the bottom outer grouting pipe are retractable; and the supporting skeleton with the inflating bag body extends and retracts as the top inner sleeve elongates and shortens relative to the bottom outer sleeve. Therefore, the utility model has small volume, convenient transportation and low cost, and provides safety guarantee for the tunnel. The utility model has simple operation, needs less manpower relative to the traditional support, and allows the personnel to work in the safe working face to guarantee the safety of the constructors.

Further, a high-strength spring is arranged vertically inside the top inner sleeve and the bottom outer sleeve; the top of the high-strength spring is fixed with a top plate of the top inner sleeve, and the bottom of the high-strength spring is fixed with a bottom plate of the bottom outer sleeve; the outer diameter of the high-strength spring is less than the inner diameter of the top inner sleeve; and the outer diameter of the top inner sleeve is less than the inner diameter of the bottom outer sleeve.

Further, the bottom of the bottom outer grouting pipe extends from the bottom plate of the bottom outer sleeve and is connected with an orifice pipe; and the top of the top inner grouting pipe extends from the top plate of the top inner sleeve.

Further, an automatic retractable winding device for winding the steel strand is arranged at the limiting block.

Further, the inflating bag body is made of a rubber waterproof film, and is hollow and cylindrical.

Further, the inflating bag body is provided with a pressure gauge for detecting inflation pressure.

Description of Drawings To more clearly describe the technical solutions in the embodiments of the utility model or in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be simply presented below. Apparently, the drawings in the following description are merely embodiments of the utility model, and for those ordinary skilled in the art, other drawings can also be obtained according to the drawings without contributing creative labor.

Fig. 1 is a structural schematic diagram of an expanded state of a temporary supporting device for emergency rescue in tunnel engineering provided by the utility model; Fig. 2 is a structural schematic diagram of a retracted state of a temporary supporting device for emergency rescue in tunnel engineering provided by the utility model; Fig. 3 is a top view of an expanded state of a supporting device in Fig. 1; and Fig. 4 is a local amplified schematic diagram of Fig. 1.

In the figures: 100-supporting sleeve; 101-top inner sleeve; 102-bottom outer sleeve; 200- grouting pipe; 201-top inner grouting pipe; 202-bottom outer grouting pipe; 300-supporting skeleton; 301-steel strand; 302-automatic retractable winding device; 400-inflating bag body; 401- fluid filling hole; 402-pressure gauge; 500-limiting block; 600-high-strength spring.

Detailed Description Embodiments of the utility model will be described below in detail. Examples of the embodiments are shown in drawings, wherein same or similar reference signs refer to same or similar elements or elements having same or similar functions from beginning to end. Embodiments described below by reference to the drawings are exemplary embodiments, and are used for explaining the utility model, and shall not be understood as a limitation to the utility model. It should be understood in the description of the utility model that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner" and "outer" indicate direction or position relationships shown based on the drawings, and are only intended to facilitate the description of the utility model and the simplification of the description rather than to indicate or imply that the indicated device or element must have a specific direction or constructed and operated in a specific direction, and therefore, shall not be understood as a limitation to the utility model.

In the utility model, unless otherwise specifically regulated and defined, terms such as "installation", "connected", "connecting", "fixation" and the like shall be understood in broad sense, and for example, may refer to fixed connection or detachable connection or integral connection, may refer to mechanical connection or electrical connection, and may refer to direct connection or indirect connection through an intermediate medium or inner communication of two elements or interaction relationship of two elements. For those ordinary skilled in the art, the specific meanings of the above terms in the utility model may be understood according to concrete conditions.

Referring to Figs. 1-4, embodiments of the utility model disclose a temporary supporting device for emergency rescue in tunnel engineering, specifically comprising: a supporting sleeve 100 which comprises a retractable top inner sleeve 101 and a bottom outer sleeve 102; a grouting pipe 200, which is located in the supporting sleeve 100 and comprises a retractable top inner grouting pipe 201 and a bottom outer grouting pipe 202; a supporting skeleton 300 which is a supporting rod structure, which is annularly hinged with the top end of the top inner sleeve 101 at one end, outwards extended and diverged at the other end and connected to the bottom outer sleeve 102 through a steel strand 301, wherein the supporting rod structure acts as a skeleton to support most of the soil and water pressure in direct contact; an inflating bag body 400 which is partially fixed on the top of the supporting skeleton 300, surrounded outside the supporting sleeve 100 and provided with a fluid filling hole 401; and a limiting block 500 which is located at a joint between the top inner sleeve 101 and the supporting skeleton 300 and used for limiting the expansion angle of the supporting skeleton 300. The utility model discloses and provides the temporary supporting device for emergency rescue in tunnel engineering. The top inner sleeve and the bottom outer sleeve are retractable; the top inner grouting pipe and the bottom outer grouting pipe are retractable; and the supporting skeleton with the inflating bag body extends and retracts as the top inner sleeve elongates and shortens relative to the bottom outer sleeve. Therefore, the utility model has small volume, convenient transportation and low cost, and provides safety guarantee for the tunnel. The utility model has simple operation, needs less manpower relative to the traditional support, and allows the personnel to be in the safe working face to guarantee the safety of the constructors.

Referring to Figs. 1 and 2, a high-strength spring 600 for providing compression supporting force is arranged vertically inside the top inner sleeve 101 and the bottom outer sleeve 102; and the spring can completely open the whole structure and maintain stability. The top of the high- strength spring 600 is fixed with a top plate of the top inner sleeve 101, and the bottom of the high-strength spring is fixed with a bottom plate of the bottom outer sleeve 102; the outer diameter of the high-strength spring 600 is less than the inner diameter of the top inner sleeve 101; and the outer diameter of the top inner sleeve 101 is less than the inner diameter of the bottom outer sleeve 102. Therefore, it is convenient for the high-strength spring to expand and contract in the top inner sleeve and the bottom outer sleeve. The top inner sleeve and the bottom outer sleeve are compressed to a minimum spacing, and fixed by fixing bolts penetrated in fixing holes at the bottoms of the top inner sleeve and the bottom outer sleeve. The bottom of the bottom outer grouting pipe 202 extends from the bottom plate of the bottom outer sleeve 102 and is connected with an orifice pipe 700; and the orifice pipe acts as a check valve and can inject grout into a failure surface by connecting grouting equipment. The top of the top inner grouting pipe extends from the top plate of the top inner sleeve 101.

Referring to Fig. 4, an automatic retractable winding device 302 for winding the steel strand 301 is arranged at the limiting block 500.

When the steel strand is not stressed, the steel strand retracts back into the winding device. The automatic retractable winding device adopts the prior art, and the quantity of use is selected according to the quantity and specification of the steel strand.

Advantageously, the inflating bag body 400 is made of a rubber waterproof film, and is hollow and cylindrical. The inflating bag body 400 is provided with a pressure gauge 402 for detecting inflation pressure. The rubber waterproof film encircles the supporting sleeve by one circle in a form of a hollow cylinder, and the top is fixed on the supporting rod. When the supporting rod is opened, the top of the rubber waterproof film is driven to expand. The rubber waterproof film has certain strength and toughness, and the interior of the rubber waterproof film is inflated through the fluid filling hole. The inflating volume is checked by the pressure gauge. A composite structure filled with gas is filled in the middle of the tunnel, which can realize water isolation and load bearing.

In transportation, the state of the utility model is shown in Fig. 2. The supporting skeleton is in a withdrawn state, and the supporting sleeve and the grouting pipe are in a retracted state. In use, firstly, the bottom plate of the bottom outer sleeve is fixed with the ground, and the orifice pipe is connected with the grouting equipment. Then, the fixing bolts are opened, and the high-

strength spring releases the compression force to elongate, to drive the top inner sleeve to extend out of the bottom outer sleeve. At the same time, because the top inner grouting pipe and the top plate of the top inner sleeve are fixed, the top inner grouting pipe is also driven to extend out of the bottom outer grouting pipe. Because one end of the steel strand is connected to the supporting 5 rod and the other end is connected to the bottom outer sleeve, as the high-strength spring bounces off, the bottom outer sleeve extends downward relative to the supporting skeleton and the steel strand is also opened to drive the supporting structure to open. Then, the inflating bag body is inflated to achieve the effects of water isolation and load bearing, as shown in Figs. 1 and

3. If necessary, the grout is injected into the failure surface by the grouting equipment. After emergency rescue is completed and the gas in the inflating bag body is discharged, the internal high-strength spring is contracted by compressing the outer steel sleeve, so that the supporting rod can be retracted.

In the illustration of this description, the illustration of reference terms "one embodiment”, "some embodiments”, "example", "specific example” or "some examples", etc. means that specific features, structures, materials or characteristics illustrated in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In this description, exemplary statements for the above terms do not have to aim at the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined appropriately in any one or more embodiments or examples. In addition, those skilled in the art can combine and integrate different embodiments or examples illustrated in this description.

Although the embodiments of the utility model have been shown and described above, it will be appreciated that the above embodiments are exemplary and shall not be understood as limitations to the utility model. Those ordinary skilled in the art can make changes, amendments, replacements and variations to the above embodiments within the scope of the utility model.

Claims (6)

CONCLUSIONS A temporary emergency rescue support device in tunnel construction, comprising: - a support sleeve (100), comprising a retractable upper inner sleeve (101) and a lower outer sleeve (102); - a grout pipe (200) located in the support sleeve (100) and comprising a retractable upper inner grout pipe (201) and a lower outer grout pipe (202); — a supporting skeleton (300) which is a supporting rod structure, annularly connected at one end to the upper end of the upper inner sleeve (101), extended outwardly and deflected at the other end and through a steel strand (301 ) is connected to the lower outer sleeve (102); - an inflation bag body (400) partially attached to the top of the support skeleton (300), and extending around the outside of the support sleeve (100) and having a fluid filling opening (401); and - a limiting block (500) located at a joint between the upper inner sleeve {101) and the supporting skeleton (300) and used for limiting the expansion angle of the supporting skeleton (300). The temporary emergency rescue support device in tunnel construction according to claim 1, wherein a high strength spring (600) is vertically arranged in the upper inner sleeve (101) and the lower outer sleeve (102); wherein the top of the high strength spring (600) is attached to a top plate of the upper inner sleeve (101), and the bottom of the high strength spring is attached to a bottom plate of the lower outer sleeve (102); wherein the outer diameter of the high strength spring (600) is smaller than the inner diameter of the upper inner sleeve (101); and wherein the outer diameter of the upper inner sleeve (101) is smaller than the inner diameter of the lower outer sleeve (102). The temporary emergency rescue support device in tunnel construction according to claim 2, wherein the underside of the lower outer grout pipe (202) protrudes from the bottom plate of the lower outer sleeve (102) and is connected to an outflow pipe (700); and wherein the top of the top inner grout pipe (201) projects from the top plate of the top inner sleeve (101). The temporary emergency rescue support device in tunnel construction according to claim 2, wherein an automatic winding device (302) for winding up the steel strand (301) is provided on the boundary block (500). The temporary emergency rescue support device in tunnel construction according to claim 2, wherein the inflation bag body (400) is made of a waterproof rubber film, and is hollow and cylindrical. The temporary emergency rescue support device in tunnel construction according to claim 2, wherein the inflation bag body (400) is provided with a pressure gauge (402) for measuring the inflation pressure.