CN111287101A - Falling stone energy dissipation guide structure - Google Patents
Falling stone energy dissipation guide structure Download PDFInfo
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- CN111287101A CN111287101A CN202010301742.3A CN202010301742A CN111287101A CN 111287101 A CN111287101 A CN 111287101A CN 202010301742 A CN202010301742 A CN 202010301742A CN 111287101 A CN111287101 A CN 111287101A
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- energy dissipation
- dissipation guide
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- rock
- falling
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
- E01F7/04—Devices affording protection against snowslides, avalanches or falling rocks, e.g. avalanche preventing structures, galleries
- E01F7/045—Devices specially adapted for protecting against falling rocks, e.g. galleries, nets, rock traps
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a rockfall energy dissipation guide structure which comprises an energy dissipation guide main groove and a plurality of energy dissipation guide branch grooves, wherein the energy dissipation guide main groove and the plurality of energy dissipation guide branch grooves are arranged along a slope below a dangerous rock mass; the energy dissipation guide main groove and the energy dissipation guide branch groove are both of a bent structure provided with a plurality of buffering energy dissipation curve ways, the falling rocks roll along the movement track designed by the grooves, the energy dissipation grooves in the bent shapes are adopted to change the speed direction of the falling rocks to reduce energy, and the situation that the existing falling rocks are large in energy level and cannot be effectively prevented and treated is solved. The invention has simple structure and low cost, is made of original rock, soil body materials and waste glue, is made of local materials, has lower treatment and maintenance cost and is convenient for popularization and application.
Description
Technical Field
The invention relates to a rockfall energy dissipation guide structure, and belongs to the technical field of slope protection.
Background
Rockfall is a rock block with extremely high falling frequency on a steep rock slope, and has the characteristics of strong concealment, strong distribution randomness, uncertainty, outburst, strong disaster-causing destructiveness and the like, so that the rockfall prevention and treatment technology is difficult, and the prevention and treatment economic cost is high. If the omnibearing protection measures cannot be made, the phenomenon that falling rocks fall to smash important protection objects such as a plurality of highways and houses often occurs, and greater potential safety hazards exist.
Falling rocks fall from a high place with impact kinetic energy of high-speed motion, and the common measures for preventing falling rocks include a falling rock retaining wall, a passive protective net and the like, but the limited falling rock prevention and control energy level is small, the larger falling rock energy level still exists the situation that the falling rocks cannot be effectively prevented and are extremely easy to be destroyed by the falling rocks.
Disclosure of Invention
In view of this, the present invention provides a rock fall energy dissipation guiding structure, which can overcome the disadvantages of the prior art.
The purpose of the invention is realized by the following technical scheme:
a rockfall energy dissipation guide structure comprises an energy dissipation guide main groove and a plurality of energy dissipation guide branch grooves, wherein the energy dissipation guide main groove and the plurality of energy dissipation guide branch grooves are arranged along a slope below a dangerous rock body; the energy dissipation guide main groove and the energy dissipation guide branch groove are both of a bending structure provided with a plurality of buffering energy dissipation bend ways.
The curved structures of the energy dissipation guide main grooves and the energy dissipation guide branch grooves are S-like and other curved structures.
The section structures of the energy dissipation guide main groove and the energy dissipation guide branch groove are the same, and the energy dissipation guide branch groove is slightly smaller than the energy dissipation guide main groove.
The intersection of the energy dissipation guide branch groove and the energy dissipation guide main groove is arranged at the position 2-2.5m above the maximum curvature position of the convex curve of the energy dissipation guide main groove.
First buffer layers are laid at the groove bottoms of the energy dissipation guide main grooves and the energy dissipation guide branch grooves, and protective layers are arranged at the tops of the energy dissipation guide main grooves and the energy dissipation guide branch grooves.
The first buffer layer is reinforced soil, the protective layer is a flexible protective net, and the flexible protective net is arranged at a rockfall opening in a fence manner; and reinforcing steel bar anchors are symmetrically embedded at the positions 20-25cm away from the two sides of the notch of the energy dissipation guide main groove and the energy dissipation guide branch groove, and the flexible protective net is fastened and fixed on the top of the groove through the reinforcing steel bar anchors.
And a second buffer layer is arranged on the inner wall of the buffering energy dissipation bend of the energy dissipation guide main groove and the energy dissipation guide branch groove.
The second buffer layer is made of buffer glue, and the buffer glue is fixed at the positions of the wall of the rockfall hedging groove at intervals through expansion screws.
The buffer glue is made of polyurethane material, the width of the buffer glue is the same as that of the side wall of the groove, and the length of the buffer glue is not less than the bending perimeter of the groove.
The position of the rock falling port at the front end of the energy dissipation guide branch groove is positioned right below the falling rocks and is of a horn mouth structure.
Compared with the prior art, the rockfall energy dissipation guide structure disclosed by the invention is arranged on a rockfall slope below a dangerous rock body, and specifically comprises rockfall ports, a plurality of energy dissipation guide branch grooves and energy dissipation guide main grooves, wherein the rockfall ports are distributed right below parts with rockfall hidden dangers; the arrangement structure of the energy dissipation guide main groove and the energy dissipation guide branch grooves is provided with a plurality of buffering energy dissipation curves, and after falling rocks enter a rock falling port, the curved shapes of the energy dissipation guide branch grooves and the energy dissipation guide main grooves are buffered for multiple times to realize speed reduction and energy dissipation, and finally the falling rocks can be safely discharged into a slope toe low-lying position to realize safe and effective solution of the problem of falling rocks of the side slope.
In addition, first buffer layers are laid at the groove bottoms of the energy dissipation guide main grooves and the energy dissipation guide branch grooves, and protective layers are arranged at the tops of the first buffer layers. And the second buffer layer is arranged on the inner wall of the buffering energy dissipation bend of the energy dissipation guide main groove and the energy dissipation guide branch groove, so that the falling rock speed can be further effectively buffered, the energy dissipation effect on the falling rock is better, the impact damage of the falling rock on the inner walls of the energy dissipation guide main groove and the energy dissipation guide branch groove can be effectively reduced, and the service life of the energy dissipation bend is prolonged.
The invention has the beneficial effects that:
1. the invention has simple structure, is made of original rock, soil body material and waste glue, can obtain materials in situ, has low cost, simple structure and lower treatment and maintenance cost, and is convenient for popularization and application.
2. The energy dissipation grooves in the curved shapes are adopted to change the speed direction of falling rocks to reduce energy, and meanwhile, buffer layers such as buffer glue, reinforced earth and the like are arranged in the grooves of the energy dissipation guide main grooves and the energy dissipation guide branch grooves, so that the situation that the existing falling rocks are large in energy level and cannot be effectively prevented and treated is solved. The falling rocks roll along the motion track designed by the grooves, so that the energy is effectively reduced and dissipated and discharged from the low-lying position, the dredging function is realized, and the problems that the falling rocks are randomly pushed to the bottom of the side slope and bounce to influence the safety of residents, destroy structures and the like are solved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic side view of the present invention.
FIG. 3 is a cross-sectional structural diagram of a cell of the present invention.
FIG. 4 is a schematic view of a cross-sectional structure of a groove at a buffering energy dissipation curve.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are illustrative of the invention only and are not limiting upon the scope of the invention.
As shown in fig. 1-4, the rockfall energy dissipation guide structure disclosed by the invention comprises an energy dissipation guide main groove 1 and a plurality of energy dissipation guide branch grooves 2 which are arranged along a rock slope 3 below a dangerous rock mass 7, wherein the upper end of each energy dissipation guide branch groove 2 is provided with a rockfall port 11, and the lower end of each energy dissipation guide branch groove is communicated with the energy dissipation guide main groove 1 in a gathering manner; the arrangement form of the energy dissipation guide main groove 1 and the energy dissipation guide branch grooves 2 adopts the property of good energy dissipation effect, and particularly adopts a bending structure with a plurality of buffering energy dissipation bent channels.
The curved structures of the energy dissipation guide main groove 1 and the energy dissipation guide branch groove 2 are S-shaped and/or other curved structures, the section structures of the energy dissipation guide main groove 1 and the section structures of the energy dissipation guide branch groove 2 are the same, and the energy dissipation guide branch groove 2 is slightly smaller than the energy dissipation guide main groove 1 according to the size and the discharge amount of falling rocks, so that the stones and canals are more convenient to discharge; and the outlet position can be flexibly arranged at a low position.
The intersection of the energy dissipation guide branch groove 2 and the energy dissipation guide main groove 1 is arranged at the position 2-2.5m above the maximum curvature position 101 of the convex curve of the energy dissipation guide main groove 1.
The bottom and the side wall of the energy dissipation guide main groove 1 and the energy dissipation guide branch groove 2 are formed by excavating the rock slope 3, and the rock falling port 11 at the front end of the energy dissipation guide branch groove 2 is located under the rock falling 6 and is of a horn mouth structure, so that the rock falling 6 can be accommodated conveniently. First buffer layers are laid at the groove bottoms of the energy dissipation guide main grooves 1 and the energy dissipation guide branch grooves 2, and protective layers are arranged at the tops of the first buffer layers; the first buffer layer is reinforced soil 4, the protective layer is a flexible protective net 5, and the flexible protective net is arranged at a rockfall opening 11 in a fence mode. The reinforced soil 4 adopts a strip-shaped structure, strips are uniformly distributed in the soil, and the compaction degree of the backfill soil meets certain requirements; the reinforced earth 4 is thickened properly in the bell mouth. Symmetrically burying steel bar anchors 10 at the positions 20-25cm away from two sides of the notches of the energy dissipation guide main groove 1 and the energy dissipation guide branch groove 2, penetrating edge support ropes from meshes of the flexible protective net 5 to the steel bar anchors 10 at two sides, tensioning, and fixing and sealing the groove top by using rope clamps. The flexible protective net 5 adopts a high-strength steel wire grid.
The inner walls of the buffering energy dissipation bend curves of the energy dissipation guide main groove 1 and the energy dissipation guide branch grooves 2 are provided with second buffer layers for reducing impact force and protecting the side walls of the grooves, and when falling rocks 6 sequentially pass through the energy dissipation guide branch grooves 2 and the energy dissipation guide main groove 1 and are buffered by the second buffer layers on the groove walls, the falling rocks change in speed and direction, and the falling rocks are obviously slowed down. The second buffer layer is buffer glue 8, and buffer glue 8 is fixed at the position of the rockfall hedging groove wall at intervals through expansion screws 9. The width of the buffer glue 8 is the same as that of the side wall of the groove, the length of the buffer glue is not less than the bending perimeter of the groove, and the thickness of the buffer glue is determined according to the buffer energy and the protection effect on the side wall. The cushion gum 8 is made of polyurethane material and can be waste material such as tires.
The construction process flow of the falling stone energy dissipation guide structure is as follows:
(1) and (4) surveying the distribution condition of the dangerous rock mass 7, the size of falling rocks, the quantity of falling rocks and falling rock paths on site, and drawing the falling positions of the multi-point falling rocks according to site survey.
(2) And determining a curve of the curved energy dissipation groove according to the shape of the inclined rock slope 3 and the actual position, and analyzing and determining the width and the depth of the energy dissipation guide main groove 1 and the plurality of energy dissipation guide branch grooves 2 according to the size and the quantity of the falling rocks 6.
(3) Excavating an energy dissipation guide main groove 1 and an energy dissipation guide branch groove 2; after the excavation is finished, the following procedures are sequentially finished:
a. symmetrically driving embedded steel bar anchors 10 at two sides of the notch;
b. fixing buffer glue 8 on the opposite impact groove walls of the falling rocks in all the buffer energy dissipation curves by using expansion screws 9;
c. reinforced soil 4 is laid at the bottom of the groove;
d. cleaning sundries in the groove;
e. and hanging a flexible protective net 5.
The falling rock energy dissipation guiding process is as follows:
falling rocks 6 on the dangerous rock mass 7 after weathering fall into a rock falling port 11 from a high position; the falling rocks 6 roll into the energy dissipation guide branch grooves 2 and the energy dissipation guide main grooves 1 along the designed movement track of the grooves, finally fall out of the rock discharge port at a slow speed through buffer layers such as buffer glue 8 and reinforced earth 4 arranged in the grooves and the flexible net 5 for preventing and controlling the bounce of the falling rocks, and the rock discharge port can be flexibly arranged at a low-lying position.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention without departing from the technical spirit of the present invention are within the scope of the present invention.
Claims (10)
1. The utility model provides a falling rock energy dissipation guide structure which characterized in that: the energy dissipation guide device comprises an energy dissipation guide main groove (1) and a plurality of energy dissipation guide branch grooves (2) which are arranged along a rock slope (3) below a dangerous rock body (7), wherein the upper end of each energy dissipation guide branch groove (2) is provided with a rock falling port (11), and the lower end of each energy dissipation guide branch groove is communicated with the energy dissipation guide main groove (1) in a gathering manner; the energy dissipation guide main groove (1) and the energy dissipation guide branch groove (2) are both of a bending structure provided with a plurality of buffering energy dissipation bent channels.
2. A rockfall energy dissipation guide structure according to claim 1, wherein: the curved structures of the energy dissipation guide main grooves (1) and the energy dissipation guide branch grooves (2) are S-shaped and/or other curved structures.
3. A rockfall energy dissipation guide structure according to claim 2, wherein: the section structures of the energy dissipation guide main groove (1) and the energy dissipation guide branch groove (2) are the same, and the energy dissipation guide branch groove (2) is slightly smaller than the energy dissipation guide main groove (1).
4. A falling rock energy dissipating guide structure according to any one of claims 1 to 3, wherein: the intersection of the energy dissipation guide branch groove (2) and the energy dissipation guide main groove (1) is arranged at the position 2-2.5m upwards from the maximum curvature position (101) of the convex curve of the energy dissipation guide main groove (1).
5. A falling rock energy dissipation guide structure as defined in claim 4, wherein: first buffer layers are laid at the groove bottoms of the energy dissipation guide main grooves (1) and the energy dissipation guide branch grooves (2), and protective layers are arranged at the tops of the first buffer layers.
6. A falling rock energy dissipation guide structure as claimed in claim 5, wherein: the first buffer layer is reinforced soil (4), the protective layer is a flexible protective net (5), and the flexible protective net is arranged at a rockfall opening (11) in a fence mode; and reinforcing steel bar anchors (10) are symmetrically embedded at the positions 20-25cm away from the two sides of the notch of the energy dissipation guide main groove (1) and the energy dissipation guide branch groove (2), and the flexible protective net (5) is fastened and fixed on the top of the groove through the reinforcing steel bar anchors (10).
7. A falling rock energy dissipation guide structure as defined in claim 4, wherein: and a second buffer layer is arranged on the inner wall of the buffering energy dissipation bend of the energy dissipation guide main groove (1) and the energy dissipation guide branch groove (2).
8. A falling rock energy dissipation guide structure as claimed in claim 7, wherein: the second buffer layer is buffer glue (8), and the buffer glue (8) is fixed at the position of the rockfall hedging groove wall at intervals through expansion screws (9).
9. A falling rock energy dissipation guide structure as defined in claim 8, wherein: the buffer glue (8) is made of polyurethane material, the width of the buffer glue is the same as that of the side wall of the groove, and the length of the buffer glue is not less than the bending perimeter of the groove.
10. A falling rock energy dissipation guide structure as defined in claim 4, wherein: the position of a rock falling port (11) at the front end of the energy dissipation guide supporting groove (2) is positioned right below the rock falling port (6), and the rock falling port is of a horn mouth structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010301742.3A CN111287101A (en) | 2020-04-16 | 2020-04-16 | Falling stone energy dissipation guide structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010301742.3A CN111287101A (en) | 2020-04-16 | 2020-04-16 | Falling stone energy dissipation guide structure |
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| Publication Number | Publication Date |
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| CN111287101A true CN111287101A (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010301742.3A Pending CN111287101A (en) | 2020-04-16 | 2020-04-16 | Falling stone energy dissipation guide structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113186842A (en) * | 2021-05-08 | 2021-07-30 | 四川省交通勘察设计研究院有限公司 | Treatment method capable of permanently preventing top of open cut tunnel from being overloaded |
-
2020
- 2020-04-16 CN CN202010301742.3A patent/CN111287101A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113186842A (en) * | 2021-05-08 | 2021-07-30 | 四川省交通勘察设计研究院有限公司 | Treatment method capable of permanently preventing top of open cut tunnel from being overloaded |
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