CN218786788U - Small-size water-rock flow protective structure of high-speed railway tunnel entrance to a cave natural gully - Google Patents
Small-size water-rock flow protective structure of high-speed railway tunnel entrance to a cave natural gully Download PDFInfo
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- CN218786788U CN218786788U CN202223241740.3U CN202223241740U CN218786788U CN 218786788 U CN218786788 U CN 218786788U CN 202223241740 U CN202223241740 U CN 202223241740U CN 218786788 U CN218786788 U CN 218786788U
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Abstract
The utility model relates to a high-speed railway tunnel entrance to a cave natural gully small-size rock flow protective structure, including base and steel stand, the base passes through the rag bolt stock to be fixed on the side slope, the steel stand is arranged on the base, be provided with high strength flexible passive protection network between the adjacent steel stand; the waste tire is arranged on the natural gully water facing side of the transverse steel columns, and the high-density mesh passive protective net is hung at the bottom of the steel columns. The utility model discloses with reasonable costs, construction convenience, be applicable to the high-speed railway tunnel entrance to a cave and resist the small-size rock flow of natural gully, solved traditional passive protection network rigidity not enough, under rivers drive stone impaction, the problem that the protection system is very fragile.
Description
Technical Field
The utility model belongs to the technical field of high-speed railway tunnel entrance to a cave engineering, especially, relate to a small-size water-rock flow protective structure of high-speed railway tunnel entrance to a cave natural sluiceway.
Background
The tunnel portal of the mountain of the high-speed railway is often complicated in geological conditions, dangerous rocks and falling rocks above the tunnel portal are widely distributed and sufficient in rainfall, so that a natural gully exists above the tunnel portal of the high-speed railway, the water catchment amount is large, exposed surrounding rocks at the portal are decomposed by weathering for a long time, and a water-stone flow is easily formed to impact a passive protective net, so that the passive protective net is damaged, and the water-stone enters a train track at the tunnel portal to influence the running safety of a train.
In traditional construction, tunnel portal top generally adopts traditional passive protection network interception dangerous rock falling rocks, but traditional passive protection network has following problem: (1) The water-rock flow impact velocity is too fast in the nature gully, and the steel stand interval of traditional passive protection network is great, leads to traditional passive protection network stability relatively poor, the global rigidity is less, takes place to destroy easily, in case traditional passive protection network destroys, will seriously influence driving safety. (2) The weak rock of weather resistance ability in tunnel entrance to a cave top is easily disintegrated the whereabouts and is formed the littleer rubble of diameter under long-term weatherization effect, because traditional passive protection network mesh is big, is relatively poor to the littleer rubble interception effect of diameter. Therefore, it is necessary to develop a new protection structure for small-sized water flow that can replace the traditional passive protection net.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the problem that prior art exists, provide a small-size water-rock flow protective structure of high-speed railway tunnel entrance to a cave natural gully, this protective structure cost is reasonable, construction convenience, be applicable to the high-speed railway tunnel entrance to a cave and resist the small-size water-rock flow of natural gully, solved traditional passive protection network rigidity not enough, under rivers drive the stone impact, the problem of protection system very easy destruction. The protective structure is particularly suitable for high-speed railway engineering at a natural gully with larger water amount and more falling rocks above a tunnel portal.
The utility model discloses a what realize like this, a high-speed railway tunnel entrance to a cave nature gully small-size rock flow protective structure, including base and steel stand, the base passes through rag bolt stock to be fixed on the side slope, the steel stand is arranged on the base, is provided with high strength flexible passive protection network between the adjacent steel stand;
the waste tire is arranged on the natural gully water facing side of the transverse steel, and the high-density mesh passive protective net is hung at the bottom of the steel stand column.
Preferably, the steel upright posts are of a profile steel structure, the steel upright posts are arranged at equal intervals, the interval between every two adjacent steel upright posts is 3m, and the height of each steel upright post is 6m.
Preferably, the transverse section steel is vertically distributed with three rows, the interval between two adjacent rows is 100cm, and the transverse section steel of the lowest row is erected at a position 60cm away from the ground.
Further preferably, the transverse section steel is connected with the steel upright posts in a welding mode.
Preferably, the waste tires are arranged in an upper and a lower way and are arranged in a quincunx manner, and the outer diameters of the waste tires are 60-80 cm.
Further preferably, the waste tires are bound on the transverse section steel.
Preferably, the arrangement range of the high-density mesh passive protection net is within 1m of the height from the ground line, and the mesh size of the high-density mesh passive protection net is not more than 10cm.
Compared with the prior art, the utility model has the advantages and positive effect be:
the utility model discloses a small-size debris flow protective structure of natural gully at the tunnel portal of a high-speed railway, which can improve the structural rigidity and enhance the protective effect of a protective net on the debris flow impact; the protective structure is suitable for mountainous areas with large catchment amount and more rockfall and the like with natural gullies above the tunnel portal of the high-speed railway, and can ensure the safe operation of a train at the tunnel portal; compared with the traditional passive protective net, the protective structure has the advantages of remarkable effect, good stability, convenience in material acquisition, capability of utilizing waste tires to buffer dangerous rock falling rocks of the protective net, waste utilization, environmental protection, saving and wide application prospect. The problem of traditional passive protection network rigidity not enough, under rivers drive the stone impact effect, protection system is very fragile is solved.
Drawings
Fig. 1 is a side view of a protective structure provided by an embodiment of the present invention;
fig. 2 is a front view of a protective structure provided by an embodiment of the present invention;
fig. 3 is a schematic diagram of a highly encrypted mesh arrangement provided by an embodiment of the present invention;
fig. 4 is a schematic view of a waste tire arrangement according to an embodiment of the present invention.
In the figure: 1. a base; 2. a steel upright; 3. transverse section steel; 4. waste tires; 5. a high-encryption mesh passive protective net; 6. anchor bolts of foundation bolts; 7. pulling an anchor rope; 8. steel cable anchor rods; 9. high-strength flexible passive protective net.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments will be illustrated in detail with reference to the accompanying drawings:
in the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Please refer to fig. 1-4, an embodiment of the present invention provides a high speed railway tunnel portal natural gully small-sized hydraulic flow protection structure, which comprises a base 1, steel columns 2, transverse steel 3, waste tires 4 and a high-density mesh passive protection net 5, wherein the base 1 is fixed on a side slope through anchor bolts 6, the steel columns 2 are arranged on the base 1, that is, the steel columns 2 are at the bottom of the natural gully, and a high-strength flexible passive protection net 9 is arranged between the adjacent steel columns 2.
The transverse section steel 3 is arranged on the water facing side of the natural gully and is transversely fixed on the middle lower part of the steel upright posts 2, the middle lower parts of the steel upright posts 2 are connected through the transverse section steel 3, the waste tires 4 are arranged on the water facing side of the natural gully of the transverse section steel 3, and the high-density mesh passive protective net 5 is hung at the bottom of the steel upright posts 2.
Specifically, the steel upright 2 is of a profile steel structure, so that the rigidity of the protective structure can be enhanced; the steel upright posts 2 can be made of HW175 type steel, the material of the steel upright posts is Q235, the steel upright posts 2 are arranged at equal intervals, the steel upright posts are arranged at the natural gully positions at equal intervals according to 3m, and the height is set to be 6m.
The transverse section steel 3 is used for connecting the steel upright posts 2, three rows of transverse section steel 3 are arranged up and down, the interval between two adjacent rows is 100cm, and the transverse section steel 3 at the bottom row is erected at a position 60cm away from the ground. Horizontal shaped steel 3 adopts welded mode to be connected with steel stand 2, can guarantee steel stand 2's stability, can guarantee simultaneously that steel stand 2 undertakes the hydraulic rock flow impact force jointly, reinforcing protective structure's stability.
The arrangement range of the high-encryption mesh passive protection net 5 is within 1m of the height from the ground line, and the mesh size of the high-encryption mesh passive protection net 5 is not more than 10cm. Traditional high-strength flexible passive protection net 9 can block large-diameter rockfall, and high-encryption mesh passive protection net 5 can block broken stones which are disintegrated and fall by bare rocks above the opening of a cave, so that stones are prevented from entering a positive line.
The waste tires 4 are bound on the transverse section steel 3, the waste tires 4 are arranged in an upper and a lower way and are arranged in a quincunx manner, and the outer diameters of the waste tires 4 are 60-80 cm. The impact of stone to protective structure in the waste tire 4 can effectively cushion the water-stone flow, play the energy dissipation but the effect that does not block water, but the installation of replacing fast simultaneously realizes waste utilization, practices thrift the environmental protection.
The utility model discloses a concrete working process as follows:
1. fixing a base 1 on a side slope through foundation bolt anchor rods 6, fixing steel upright posts 2 on the base 1, connecting high-strength flexible passive protective nets 9 between the steel upright posts 2, reinforcing anchor pulling ropes 7 at the tops of the corresponding steel upright posts 2 every 18 meters or so, and fixing the other ends of the anchor pulling ropes 7 with the side slope through steel rope anchor rods 8;
2. three rows of transverse section steel 3 are welded on the water facing side of the natural gully at the middle lower part of the steel upright post 2, the transverse section steel 3 of the lowest row is erected at a position 60cm away from the ground, and the interval between two adjacent rows is 100cm;
3. a high-density mesh passive protection net 5 is hung at the bottom of the steel upright post 2, and the distribution range of the high-density mesh passive protection net 5 is within 1m from the ground line;
4. waste tires 4 are bound on the water-facing side of the natural gully of the transverse section steel 3, the upper and lower waste tires 4 are arranged, and the arrangement is in a quincunx shape.
The utility model discloses a small-size debris flow protective structure of natural gully at the tunnel portal of a high-speed railway, which can improve the structural rigidity and enhance the protective effect of a protective net on the debris flow impact; the protective structure is suitable for mountain areas with large catchment amount and more rockfall, such as natural gullies and the like above the tunnel portal of the high-speed railway, and can ensure the safe operation of trains at the tunnel portal; compared with the traditional passive protective net, the protective structure has the advantages of remarkable effect, good stability and convenience in material acquisition, and the waste tire 4 is utilized to buffer dangerous rock falling rocks of the protective net, so that the protective net is environment-friendly and economical and has a wide application prospect. The problem of traditional passive protection network rigidity not enough, under rivers drive the stone impact, protection system is very fragile is solved.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.
Claims (7)
1. A small-sized debris flow protection structure for natural gully of a tunnel portal of a high-speed railway comprises a base and steel stand columns, wherein the base is fixed on a side slope through foundation bolt anchor rods, the steel stand columns are arranged on the base, and a high-strength flexible passive protective net is arranged between the adjacent steel stand columns; the method is characterized in that:
the novel high-density steel column ditch is characterized by further comprising transverse steel sections, waste tires and high-density mesh passive protection nets, wherein the transverse steel sections are arranged on the water facing side of the natural gully and are transversely fixed on the middle lower portions of the steel columns, the middle lower portions of the steel columns are connected through the transverse steel sections, the waste tires are arranged on the water facing side of the natural gully of the transverse steel sections, and the high-density mesh passive protection nets are hung at the bottoms of the steel columns.
2. The natural sluiceway small-sized hydraulic rock flow protection structure of the high-speed railway tunnel portal according to claim 1, wherein the steel columns are of a profile steel structure, the steel columns are arranged at equal intervals, the interval between adjacent steel columns is 3m, and the height of each steel column is 6m.
3. The natural gully small-sized hydraulic rock flow protection structure for the tunnel portal of the high-speed railway according to claim 1, wherein the transverse section steel is distributed in three rows up and down, the interval between two adjacent rows is 100cm, and the transverse section steel in the lowest row is erected at a position 60cm away from the ground.
4. The natural gully small-sized hydraulic rock flow protection structure of the tunnel portal of the high-speed railway according to claim 3, wherein the transverse section steel is connected with the steel upright posts in a welding manner.
5. The natural gully small-sized hydraulic rock flow protection structure for the tunnel portal of the high-speed railway according to claim 1, wherein the waste tires are arranged in an upper and a lower way and are arranged in a quincunx manner, and the outer diameters of the waste tires are 60-80 cm.
6. The natural gully small-sized hydraulic rock flow protection structure of the tunnel portal of the high-speed railway according to claim 5, wherein the waste tires are bound on the transverse section steel.
7. The natural gully small-sized rock flow protection structure for the tunnel portal of the high-speed railway according to claim 1, wherein the high-density mesh passive protection nets are arranged within 1m of the height from the ground line, and the mesh size of the high-density mesh passive protection nets is not more than 10cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223241740.3U CN218786788U (en) | 2022-11-29 | 2022-11-29 | Small-size water-rock flow protective structure of high-speed railway tunnel entrance to a cave natural gully |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223241740.3U CN218786788U (en) | 2022-11-29 | 2022-11-29 | Small-size water-rock flow protective structure of high-speed railway tunnel entrance to a cave natural gully |
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| Publication Number | Publication Date |
|---|---|
| CN218786788U true CN218786788U (en) | 2023-04-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223241740.3U Active CN218786788U (en) | 2022-11-29 | 2022-11-29 | Small-size water-rock flow protective structure of high-speed railway tunnel entrance to a cave natural gully |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218786788U (en) |
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2022
- 2022-11-29 CN CN202223241740.3U patent/CN218786788U/en active Active
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