CN212772012U - Falling stone buffering flexible protection system - Google Patents

Abstract

The utility model relates to a flexible protection system of rockfall buffering belongs to side slope protection system technical field. The utility model provides a can provide bigger displacement degree of freedom for falling the stone, reduce its impact load, control its spring height, guide its movement track's the flexible protection system of falling stone buffering. The function of the system is to attenuate the kinetic energy of falling rocks from the upper slope surface by using the falling rock intercepting area of the system, control the movement track of the falling rocks, guide the falling rocks into the falling rock buffer channel at the tail section of the system, and lead the falling rocks to be continuously guided downwards to the slope under the constraint action of the falling rock buffer channel until the falling rocks enter the falling rock accumulation area. The protection system guides falling rocks from the upper side slope to the slope toe or the downhill section for centralized accumulation and cleaning, or the falling rocks enter the next protection structure with relatively small kinetic energy and bounce height, so that the falling rocks with high kinetic energy can be protected with low protection energy level and system height.

Description

Falling stone buffering flexible protection system

Technical Field

The utility model relates to a flexible protection system of rockfall buffering belongs to side slope protection system technical field.

Background

The flexible protection system comprises various flexible metal meshes, support ropes, upright columns and bases thereof, pull ropes, anchor rods, energy dissipaters with overload protection effect and the like, has good impact resistance and the advantages of rapidness and convenience in construction and installation, is widely applied to construction or operation protection of projects such as highways, railways, hydropower stations and the like, is used for blocking and intercepting moving slope falling rocks, sliding rock-soil bodies, debris flows, avalanches, blasting flystones and the like, and has good effects.

At present, to the protection of the long and large side slope that falls the stone source region dispersion and frequently take place, adopt traditional falling stone to block the system and block in grades, or adopt initiative protection system to carry out the reinforcement of covering of full domatic, protection engineering volume can be very big, and the falling stone that blocks is not convenient for clear up, and later maintenance demand and the degree of difficulty all probably are great, also uneconomic.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the utility model provides a better falling rocks buffering flexible protection system of economic nature to can conveniently clear up the falling rocks that block.

The utility model provides a technical scheme that its technical problem adopted is: the falling stone buffering flexible protection system comprises at least two vertical columns and at least two transverse restraint ropes, wherein the vertical columns are fixedly arranged on the slope surface at intervals in the transverse direction, the net sheets are transversely unfolded between the vertical columns, the transverse restraint ropes are longitudinally arranged along the slope surface at intervals, two ends of each transverse restraint rope are fixedly arranged on the slope surface, and the transverse restraint ropes are arranged in a lower area of one side of each vertical column facing the toe; the upper end of net piece is connected in the top of stand, and the other end of net piece sets up in the stand towards one side of toe, and horizontal restraint rope passes the horizontal round on the net piece for the net piece in the region between the top of the horizontal restraint rope that is located the top and the stand top constitutes falling rocks intercepting area, and the space between the domatic space of net piece in the region between the horizontal restraint rope constitutes the rolling falling rocks buffer channel that supplies to fall rocks.

Further, the method comprises the following steps: the transverse restraint rope positioned at the lowermost part is a lower boundary rope which is arranged at the end head of the lower end of the mesh.

Further, the method comprises the following steps: the transverse restraint ropes are connected with the transverse row holes in the net sheets through the shackles, two ends of each transverse restraint rope exceed the boundaries of the net sheets by 1-1.5 m respectively, and two ends of each transverse restraint rope are fixed through the foundation anchor rods.

Further, the method comprises the following steps: each upright post is correspondingly provided with a longitudinal restraint rope, the upper end of each longitudinal restraint rope is fixedly connected with the top end of each upright post, and the lower end of each longitudinal restraint rope is fixed through a foundation anchor rod after the longitudinal restraint rope penetrates through the longitudinal row holes in the net piece; the longitudinal restraint ropes are connected with the longitudinal row holes on the net sheet through the shackles.

Further, the method comprises the following steps: the upright post at the end of the protection system is a side upright post, the side upright post is provided with a side pulling anchor rope, the upper end of the side pulling anchor rope is fixedly connected with the top end of the side upright post, and the lower end of the side pulling anchor rope is fixed on the slope surface through a foundation anchor rod.

Further, the method comprises the following steps: each upright post is correspondingly provided with two pull-up anchor ropes, the upper ends of the pull-up anchor ropes are fixedly connected with the top ends of the upright posts, and the lower ends of the pull-up anchor ropes are fixed on the slope surface through foundation anchor rods; for the same upright post, the anchoring point of one upward pulling anchor rope on the slope surface is arranged at the upper left of the upright post, and the anchoring point of the other upward pulling anchor rope on the slope surface is arranged at the upper right of the upright post.

Further, the method comprises the following steps: the upright post between the two side upright posts is a middle upright post, one middle upright post is selected at intervals of 80-100 m to be provided with a middle reinforcing rope, for the selected middle upright post, each middle upright post is correspondingly provided with two middle reinforcing ropes, the upper end of each middle reinforcing rope is fixedly connected with the top end of the middle upright post, the lower end of each middle reinforcing rope is fixed on a slope surface through a foundation anchor rod, for the same middle upright post, an anchoring point of one middle reinforcing rope on the slope surface is arranged at the left lower part of the middle upright post, and an anchoring point of the other middle reinforcing rope on the slope surface is arranged at the right lower part of the middle upright post.

Further, the method comprises the following steps: the upper end of the net piece is connected with the upper supporting rope through the sewing rope; the stand that is located protection system end position is the limit stand, and the top of two limits stands is fixed and is provided with guide pulley, goes up the stay cord and erects on the guide pulley of two limits stands, and the end of going up the stay cord is after bypassing guide pulley, fixes on domatic through the basis stock.

Further, the method comprises the following steps: the upright column between the two side upright columns is a middle upright column, the upper supporting rope is provided with a breaking point at the position of part of the middle upright column or at the positions of all the middle upright columns, the breaking point enables the upper supporting rope to form a joint A and a joint B, the middle upright column at the position of the breaking point is connected with the joint A through an energy dissipater at one side of the middle upright column, and is connected with the joint B through another energy dissipater at the other side of the middle upright column.

Further, the method comprises the following steps: the linear length of the mesh in the rockfall interception area in the longitudinal direction is 1.75-2.5 times of the height of the upright column; the mesh is a flexible metal mesh; the net sheets are two layers, one layer is a small-aperture net sheet facing the slope surface, and the other layer is a large-aperture net sheet facing away from the slope surface.

The utility model has the advantages that: the falling rock buffer flexible protection system in the utility model is adopted to protect falling rocks, and when falling rocks impact is received, falling rocks energy is reduced by a net piece of a falling rocks interception area; the transverse restraining rope positioned at the uppermost part can enable the net piece at the corresponding position to be matched with the slope surface to form a structure similar to a bag opening, control the bounce height of falling rocks and guide the falling rocks to enter a falling rocks buffer channel below; then, the falling rock energy is further reduced by the net piece at the position of the falling rock buffer channel; the falling rock buffer channel has another function of guiding falling rocks to roll to a stacking area below the protection system. The protection system guides falling rocks from the upper side slope to the slope toe or the downhill section for centralized accumulation and cleaning, or the falling rocks enter the next protection structure with relatively small kinetic energy and bounce height, so that the falling rocks with high kinetic energy can be protected with low protection energy level and system height.

The falling rock buffering flexible protection system can be arranged from an opening at the upper section of the slope surface, so that the using amount of the whole engineering falling rock protection system can be reduced; the falling rocks are guided to the toe for centralized processing, so that the workload of later maintenance is reduced, and the method has the advantage of overall economy.

Compared with the traditional active reinforcement flexible protection system, the rockfall buffering flexible protection system greatly reduces the number of the middle foundation anchor rods, reduces the disturbance of the anchor rods to the original stable slope in the implementation engineering, and reduces the risk of overall stability of the slope; it is also more economical in terms of material usage.

The utility model discloses can be used as the flexible protection system that has now known to be used for the rockfall protection, especially be fit for being used for the protection of the rock, the flyrock, the gliding ground body that roll down of high steep side slope under the high condition of protection range is wide, the frequency of occurrence.

Drawings

FIG. 1 is a schematic view of an upright surface structure of an embodiment of the rockfall buffering flexible protection system of the present invention;

FIG. 2 is a schematic side view of the structure of FIG. 1;

FIG. 3 is a schematic plan view of the structure of FIG. 1;

FIG. 4 is a schematic view of a portion of the structure of FIG. 1;

in the drawings, the names of the parts corresponding to the reference numerals are as follows:

1-upright column, 2-upper supporting rope, 3-mesh sheet, 4-energy dissipater, 5-middle reinforcing rope, 6-side pulling anchor rope, 7-foundation anchor rod, 8-longitudinal restraining rope, 9-side boundary rope, 10-transverse restraining rope, 11-lower boundary rope, 12-upper pulling anchor rope, 13-slope surface, 14-rockfall intercepting area, 15-rockfall buffer channel, 16-accumulation area, 17-suture rope, 18-shackle and 19-guide pulley.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

As shown in fig. 1 to 4, the utility model comprises a net 3 and a column 1, wherein the column 1 is at least two, the column 1 is transversely arranged on a slope 13 at intervals, the net 3 transversely expands between the columns 1, the utility model also comprises at least two transverse restraint ropes 10, the transverse restraint ropes 10 are longitudinally arranged along the slope 13 at intervals, two ends of the transverse restraint ropes 10 are fixedly arranged on the slope 13, and the transverse restraint ropes 10 are arranged in the lower area of one side of the column 1 facing the toe; the upper end of net piece 3 is connected in the top of stand 1, and the other end of net piece 3 sets up in the one side of stand 1 towards the toe, and horizontal restricted rope 10 passes the horizontal round on the net piece 3 for the net piece 3 that is located the region between the top of the horizontal restricted rope 10 of the top and stand 1 constitutes falling rocks intercepting area 14, and the space between the domatic 13 of the net piece 3 of region between the horizontal restricted rope 10 constitutes the falling rocks buffer channel 15 that supplies the falling rocks to roll. In specific implementation, as the mesh 3 is flexible, the mesh 3 in the area where the transverse restraint ropes 10 are located covers the slope 13, but is not tightly attached to the slope 13, and is only hung on the slope 13 like a bag with an opening, so that a rockfall buffer channel 15 is formed; when falling rocks enter from the upper end of the falling rock buffer channel 15, the falling rocks slide or roll along the slope surface 13 in the net piece 3 under the action of gravity or kinetic energy of the falling rocks and roll out from the lower edge of the net piece 3. Furthermore, it should be noted that the mesh 3 is a unitary structure arranged on the sloping surface 13, and fig. 1 is for convenience of showing other components in the protection system, and thus a part of the mesh 3 is not shown.

After the utility model is adopted, when falling rock impact is received, the falling rock energy is firstly reduced by the net piece 3 of the falling rock intercepting area 14; the transverse restraint rope 10 positioned at the uppermost part can enable the net piece 3 at the corresponding position to be matched with the slope surface 13 to form a structure similar to a bag opening, control the bounce height of falling rocks and guide the falling rocks to enter a falling rocks buffer channel 15 below; then the falling rock energy is further reduced by the net 3 at the position of the falling rock buffer channel 15; another function of the falling rock buffer channel 15 is to guide the falling rock to roll down to the accumulation zone 16 below the protection system. The protection system guides falling rocks from the upper side slope to the slope toe or the downhill section for centralized accumulation and cleaning, or the falling rocks enter the next protection structure with relatively small kinetic energy and bounce height, so that the falling rocks with high kinetic energy can be protected with low protection energy level and system height.

In order to fully exert the buffer protection effect of the lower net piece, the transverse restraint ropes 10 are fully distributed on the lower net piece, namely: the transverse restraint rope 10 positioned at the lowest part at the lower part is a lower boundary rope 11, and the lower boundary rope 11 is arranged at the end position of the lower end of the mesh 3.

In order to facilitate the connection of the transverse restraint ropes 10 and the net sheets 3 and provide enough freedom degree for the net sheets at the lower part, facilitate the guidance of rock falling movement and consume the kinetic energy of the rock falling, the transverse restraint ropes 10 are connected with transverse row holes on the net sheets 3 through shackles 18. Shackle 18 is a standard component that can be implemented with reference to GBT 25854-2010 general hoisting D-shaped and segmental forged shackles. To better provide sufficient freedom to the lower mesh, it may be further preferable that: the two ends of the transverse restraint rope 10 respectively exceed the boundary of the net 3 by 1-1.5 m. In order to make the structure simple and reliable, two ends of the transverse restraint rope 10 are fixed through the foundation anchor rods 7.

For implementation, the mesh 3 at the joint position of the rockfall interception area 14 and the rockfall buffer channel 15 can adopt a transverse separation design, and the upper and lower mesh parts are connected into a whole through the transverse restraining rope 10 and the sewing rope 17.

In order to ensure that the structure is more reliable, simultaneously, enough freedom degree is provided for the lower net piece, the falling rock movement is conveniently guided, and the falling rock kinetic energy is consumed; each upright post 1 is correspondingly provided with a longitudinal restraint rope 8, the upper end of each longitudinal restraint rope 8 is fixedly connected with the top end of the upright post 1, and the lower end of each longitudinal restraint rope 8 is fixed through a foundation anchor rod 7 after the longitudinal restraint rope 8 penetrates through the longitudinal row holes in the net 3; the longitudinal restraint ropes 8 are connected with the longitudinal row holes on the net sheet 3 through shackles 18. The longitudinal restraint ropes 8 are transversely and fully distributed on the mesh 3, namely the longitudinal restraint ropes 8 corresponding to the two side edges of the mesh 3 are side boundary ropes 9. For convenience of implementation, the shackles on the longitudinal restraint cords 8 and the lateral border cords 9 may be spaced apart by a mesh. Referring to fig. 4, the side edge row holes of the mesh 3 are connected with the side boundary ropes 9 at intervals by using shackles 18.

In order to ensure that the structure is more reliable, the upright post 1 positioned at the end of the protection system is a side upright post which is provided with a side pull anchor rope 6, the upper end of the side pull anchor rope 6 is fixedly connected with the top end of the side upright post, and the lower end of the side pull anchor rope is fixed on the slope 13 through a foundation anchor rod 7.

In order to improve the structural reliability, each upright post 1 is correspondingly provided with two upper anchor pulling ropes 12, the upper ends of the upper anchor pulling ropes 12 are fixedly connected with the top ends of the upright posts 1, and the lower ends of the upper anchor pulling ropes are fixed on a slope surface 13 through foundation anchor rods 7; for the same upright post 1, the anchoring point of one upward pulling anchor rope 12 on the slope surface 13 is arranged at the upper left of the upright post 1, and the anchoring point of the other upward pulling anchor rope 12 on the slope surface 13 is arranged at the upper right of the upright post 1. This solution can be implemented in combination with the side pull mooring lines 6 described above.

In order to further improve the structural reliability, the upright post 1 positioned between the two side upright posts is a middle upright post, one middle upright post is selected at intervals of 80-100 m and provided with a middle reinforcing rope 5, for the selected middle upright post, each middle upright post is correspondingly provided with two middle reinforcing ropes 5, the upper end of each middle reinforcing rope 5 is fixedly connected with the top end of the middle upright post, the lower end of each middle reinforcing rope 5 is fixed on a slope 13 through a foundation anchor rod 7, for the same middle upright post, the anchoring point of one middle reinforcing rope 5 on the slope 13 is arranged at the left lower part of the middle upright post, and the anchoring point of the other middle reinforcing rope 5 on the slope 13 is arranged at the right lower part of the middle upright post. The scheme of arranging the middle reinforcing rope 5 is particularly suitable for the situation that the transverse width of the single-channel protection system is more than 100 m.

When the transverse width of the single-channel protection system is more than 100m, the following scheme is preferably adopted: the upright column 1 between the two side upright columns is a middle upright column, the upper supporting rope 2 is provided with a breaking point at the position of part of the middle upright column or at the position of all the middle upright columns, the breaking point enables the upper supporting rope 2 to form a joint A and a joint B, the middle upright column at the position of the breaking point is connected with the joint A through an energy dissipater 4 at one side of the middle upright column, and is connected with the joint B through another energy dissipater 4 at the other side of the middle upright column. The energy dissipater 4 is a conventional art and can be implemented by referring to patent document CN 201554029U. By adopting the scheme, the reliability of the protective structure can be further improved.

The utility model also comprises a sewing rope 17 and an upper supporting rope 2, the sewing rope 17 passes through the transverse row holes at the upper edge of the net piece 3, preferably, referring to fig. 4, the sewing rope 17 sequentially passes through each hole at the upper edge of the net piece 3, and the upper end of the net piece 3 is connected with the upper supporting rope 2 through the sewing rope 17; the upright post 1 positioned at the end position of the protection system is a side upright post, the top ends of the two side upright posts are fixedly provided with guide pulleys 19, the upper support rope 2 is erected on the guide pulleys 19 of the two side upright posts, and the end of the upper support rope 2 is fixed on the slope surface 13 through a foundation anchor rod 7 after bypassing the guide pulleys 19. Further, the end of the upper support line 2 may be connected to the foundation bolt 7 via a dissipater 4. According to the different numbers of last supporting rope 2, the spout number of guide pulley 19 is different, and guide pulley 19's effect is to change the sliding friction between last supporting rope 2 and the stand 1 top and is rolling friction, and the protection is gone up supporting rope 2, and the system passes power more smoothly.

In order to better exert the intercepting function of the rockfall intercepting area 14 and guide rockfall to enter the rockfall buffering channel 15, the linear length of the net piece 3 of the rockfall intercepting area 14 in the longitudinal direction is 1.75-2.5 times of the height of the upright post 1. In order to make the structure simple and reliable, the net 3 is a flexible metal net. In addition, net piece 3 can be the one deck also can be the multilayer, and this size and the energy setting according to actual falling rocks makes simple structure reliable for improving barrier propterty simultaneously, and net piece 3 can be designed for two-layer, and the one deck is the little aperture net piece towards domatic 13, and the other deck is the big aperture net piece of domatic 13 of dorsad. The small-aperture mesh adopts a low bearing capacity design, and the large-aperture mesh adopts a high bearing capacity design. The two layers of net sheets 3 can be bound and connected by binding wires, and the distance between binding points is 1 meter. The small-pore mesh sheet is not limited to a specific pore size, but is only limited to the large-pore mesh sheet.

Claims (10)

1. Falling flexible protection system of stone buffering, including net piece (3) and stand (1), stand (1) is two at least, and stand (1) horizontal interval is fixed to be set up on domatic (13), and net piece (3) transversely expandes its characterized in that between stand (1): the slope is characterized by further comprising at least two transverse restraint ropes (10), the transverse restraint ropes (10) are arranged along the slope surface (13) at intervals in the longitudinal direction, two ends of each transverse restraint rope (10) are fixedly arranged on the slope surface (13), and the transverse restraint ropes (10) are arranged in the lower area of one side, facing the toe, of the upright post (1); the upper end of net piece (3) is connected in the top of stand (1), the other end of net piece (3) sets up in one side of stand (1) towards the toe, horizontal round of play on net piece (3) is passed in horizontal restraint rope (10) for be located the top net piece (3) of the region between horizontal restraint rope (10) and stand (1) top constitute falling rocks intercepting area (14), the space between regional net piece (3) between horizontal restraint rope (10) and domatic (13) constitutes and supplies falling rocks rolling falling rocks buffer channel (15).

2. The rockfall buffering flexible protection system according to claim 1, wherein: the transverse restraint rope (10) positioned at the lowest part is a lower boundary rope (11), and the lower boundary rope (11) is arranged at the end head of the lower end of the mesh (3).

3. The rockfall buffering flexible protection system according to claim 1, wherein: the transverse restraint ropes (10) are connected with transverse row holes in the net sheets (3) through shackles (18), two ends of each transverse restraint rope (10) exceed the boundaries of the net sheets (3) by 1-1.5 m respectively, and two ends of each transverse restraint rope (10) are fixed through foundation anchor rods (7).

4. The rockfall buffering flexible protection system according to claim 1, wherein: each upright post (1) is correspondingly provided with a longitudinal restraint rope (8), the upper end of each longitudinal restraint rope (8) is fixedly connected with the top end of the upright post (1), and the lower end of each longitudinal restraint rope (8) is fixed through a foundation anchor rod (7) after passing through longitudinal rows of holes in the net piece (3); the longitudinal restraint ropes (8) are connected with the longitudinal row holes on the net sheet (3) through shackles (18).

5. The rockfall buffering flexible protection system according to claim 1, wherein: the upright post (1) positioned at the end of the protection system is a side upright post, the side upright post is provided with a side pulling anchor rope (6), the upper end of the side pulling anchor rope (6) is fixedly connected with the top end of the side upright post, and the lower end of the side pulling anchor rope is fixed on the slope surface (13) through a foundation anchor rod (7).

6. The rockfall buffering flexible protection system according to claim 1, wherein: each upright post (1) is correspondingly provided with two pull-up anchor ropes (12), the upper ends of the pull-up anchor ropes (12) are fixedly connected with the top ends of the upright posts (1), and the lower ends of the pull-up anchor ropes are fixed on a slope surface (13) through foundation anchor rods (7); for the same upright post (1), the anchoring point of one upward pulling anchor rope (12) on the slope surface (13) is arranged at the upper left of the upright post (1), and the anchoring point of the other upward pulling anchor rope (12) on the slope surface (13) is arranged at the upper right of the upright post (1).

7. The rockfall buffering flexible protection system according to claim 6, wherein: the upright post (1) positioned between the two side upright posts is a middle upright post, one middle upright post is selected at intervals of 80-100 m to be provided with a middle reinforcing rope (5), for the selected middle upright post, each middle upright post is correspondingly provided with two middle reinforcing ropes (5), the upper end of each middle reinforcing rope (5) is fixedly connected with the top end of the middle upright post, and the lower end of each middle reinforcing rope is fixed on a slope (13) through a foundation anchor rod (7), for the same middle upright post, the anchoring point of one middle reinforcing rope (5) on the slope (13) is arranged at the left lower part of the middle upright post, and the anchoring point of the other middle reinforcing rope (5) on the slope (13) is arranged at the right lower part of the middle upright post.

8. A rockfall buffering flexible protection system according to any one of claims 1 to 7, wherein: the mesh is characterized by further comprising a sewing rope (17) and an upper supporting rope (2), wherein the sewing rope (17) penetrates through the transverse row holes in the upper edge of the mesh (3), and the upper end of the mesh (3) is connected with the upper supporting rope (2) through the sewing rope (17); the upright post (1) positioned at the end position of the protection system is an edge upright post, the top ends of the two edge upright posts are fixedly provided with guide pulleys (19), an upper support rope (2) is erected on the guide pulleys (19) of the two edge upright posts, and the end of the upper support rope (2) is fixed on a slope surface (13) through a foundation anchor rod (7) after bypassing the guide pulleys (19).

9. The rockfall buffering flexible protection system according to claim 8, wherein: the upright post (1) between the two side upright posts is a middle upright post, the upper supporting rope (2) is provided with a breaking point at the position of part of the middle upright post or at the positions of all the middle upright posts, the breaking point enables the upper supporting rope (2) to form a joint A and a joint B, the middle upright post at the breaking point is connected with the joint A through an energy dissipater (4) at one side of the middle upright post, and is connected with the joint B through another energy dissipater (4) at the other side of the middle upright post.

10. A rockfall buffering flexible protection system according to any one of claims 1 to 7, wherein: the linear length of the mesh (3) of the rockfall interception area (14) in the longitudinal direction is 1.75-2.5 times of the height of the upright post (1); the net sheet (3) is a flexible metal net sheet; the net sheets (3) are two layers, one layer is small-aperture net sheets facing the slope surface (13), and the other layer is large-aperture net sheets facing away from the slope surface (13).

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