Flexible blocking and fixing water passing structure suitable for ultra-wide river channel

Abstract

The flexible blocking and fixing water passing structure comprises a blocking system, the two ends of the blocking system are fixedly connected with a bank slope through a plurality of side anchor rods correspondingly, a plurality of concrete spread foundations are arranged at the bottom of the blocking system, and the concrete spread foundations are embedded into the ground; concrete connecting beams are arranged between the blocking system and the concrete extended foundations, the concrete extended foundations are connected through the concrete connecting beams, and a plurality of anchoring foundations are arranged on the concrete extended foundations along the upstream side of the river channel. According to the flexible blocking and fixing water passing structure suitable for the ultra-wide river channel, the requirement of the blocking and protecting structure for the geological condition of a bank slope is lowered, the span of a protecting net is widened, a certain forward inclination angle is set for the steel columns and the winding type annular net, and therefore the angle of an accumulation body formed by blocking solid matter such as debris flow is close to the natural repose angle of the accumulation body; and the accumulation soil pressure borne by the debris flow blocking net is relieved.

Description

Technical Field

[0001] The invention belongs to the technical field of flexible blocking equipment and relates to a flexible blocking water-passing structure suitable for an ultra-wide river channel. Background Art

[0002] Flexible protection technologies such as active protection nets, passive protection nets, and guided protection nets have been widely used in the fields of railway, highway, hydropower station, mine, municipal construction, etc., such as rockfall interception, dangerous rock and slope reinforcement, slope protection, and debris flow interception. The Chinese invention patent application with publication number CN110344374A and publication date October 18, 2019 discloses a debris flow flexible interception net and a debris flow flexible interception dam. The Chinese invention patent with publication number CN115450234A and publication date December 9, 2022 discloses a high-energy impact interception protection structure and its construction method. The study of the existing technology found that the current debris flow flexible protection system is mainly used for the protection and control of small and medium-sized valley-type debris flows.

[0003] The engineering workload of setting up concrete masonry structures in the entire section of the river channel and the wider channel is large, and the impact pressure per unit area of ​​the river channel and the impact force of large rocks are relatively small. It is economically unreasonable to use masonry structures such as concrete dams. The existing flexible protection structure has significant advantages in adaptability, economy, safety, and environmental protection, but its use has strict requirements on the span of the flexible protection net, the rock conditions of the channel or river bank slope, etc. Generally, the span of the river channel or channel is required to be less than 12m, which limits the application of flexible protection nets in the interception and management of water in rivers and wider channels.

[0004] In summary, the existing technology has the problem of lack of effective retaining structure in the water retention and management of rivers and wider channels. Summary of the invention

[0005] The purpose of the present invention is to provide a flexible water-blocking structure suitable for ultra-wide rivers, which solves the problem of lack of effective blocking structures in the water-blocking management of rivers and wider channels in the prior art.

[0006] The technical solution adopted by the present invention is a flexible retaining water-passing structure suitable for ultra-wide rivers, including a retaining system, wherein both ends of the retaining system are fixedly connected to the bank slope by a plurality of side anchor rods, a plurality of concrete extension foundations are arranged at the bottom of the retaining system, the concrete extension foundations are embedded in the ground, and the angle between the retaining system and the ground on the upstream side is an acute angle, a concrete connecting beam is arranged between the retaining system and the concrete extension foundation, the concrete extension foundations are connected by the concrete connecting beam, a plurality of anchoring foundations are arranged on the upstream side of the river channel, the bottom of the retaining system is fixedly connected to the concrete connecting beam and the concrete extension foundation, and the top of the retaining system is connected to the anchoring foundation by a cable.

[0007] The present invention is also characterized in that: The retaining system includes a winding ring net, both ends of which are fixed to the slope by a number of side anchor rods, and the winding ring net is fixed by a number of steel columns and a number of transverse steel wire ropes. The steel columns are arranged in parallel, and the transverse steel wire ropes are arranged in parallel; the angle between the axis of the steel column and the plane on the upstream side of the top of the concrete connecting beam is an acute angle; the angle between the mesh surface of the winding ring net and the plane on the upstream side of the top of the concrete connecting beam is an acute angle.

[0008] A number of hanging ears are arranged at equal intervals along the axial direction on the outer wall of the steel column. Both ends of the transverse steel wire rope are respectively connected to the side anchor rods, and the transverse steel wire rope passes through the hanging ears on the steel columns respectively; the transverse steel wire rope is interlaced and fitted with the winding annular net.

[0009] The winding annular net is provided with a plurality of pressure relief rings, and the winding annular net comprises a plurality of flexible protection nets, which are connected by sewing shackles; the angle between the mesh surface of the flexible protection net and the plane on the upstream side of the top of the concrete connecting beam is an acute angle.

[0010] Reinforcing ribs are arranged on the side walls of the bottom end of the steel column, and anchoring steel bars are arranged in the concrete extended foundation. The anchoring steel bars pass through the reinforcing ribs on the steel column and the concrete connecting beam in sequence and are embedded in the concrete extended foundation. An inclined surface is arranged on the top of the concrete connecting beam, and the end face of one end of the steel column is arranged to fit the inclined surface of the top of the concrete connecting beam.

[0011] The concrete connecting beams include a plurality of transverse connecting beams, which are located on the same straight line and are fixedly connected by cross-joint steel bars; the concrete extended foundations are connected by transverse connecting beams, and the concrete extended foundations are arranged in coordination with steel columns and anchor foundations.

[0012] An upper pull anchor buckle is arranged on the end of the steel column away from the concrete expansion foundation, a wire rope anchor rod is fixedly arranged in the anchor foundation, an upper pull anchor rope is arranged between the wire rope anchor rod and the steel column, one end of the upper pull anchor rope is fixedly connected to the wire rope anchor rod, and the other end is fixedly connected to the upper pull anchor buckle on the steel column.

[0013] Anti-impact plastic-coated wire cages are respectively arranged on both sides of the concrete connecting beam, and the anti-impact plastic-coated wire cages are respectively fitted with the concrete connecting beam and the concrete extended foundation.

[0014] A plurality of steel wire rope anchor rods are embedded at equal intervals on the top of the transverse connecting beam, and the steel wire rope anchor rods on the transverse connecting beam are respectively connected to the transverse steel wire ropes at the lowest end.

[0015] The concrete extended foundation structure is in an inverted "T" shape or a regular trapezoidal structure. Slopes are respectively arranged on both sides of the concrete extended foundation. The top of the concrete extended foundation is fitted with a transverse connecting beam. The anchor steel bar passes through the transverse connecting beam and is embedded in the smaller end of the concrete extended foundation end face. Backfill original soil is fitted between the concrete extended foundation and the transverse connecting beam, and the backfill original soil is fitted between the concrete extended foundation and the slope.

[0016] The beneficial effects of the present invention are as follows: the present invention adjusts the active earth pressure generated by the deposits blocked upstream of the water-blocking structure from being borne by the anchors on both sides of the slope to being mainly borne by the concrete extension foundation at the bottom of the blocking system and the anchor foundation on the upstream side through the combined application of structures such as anchor foundations, wire rope anchor rods, upper pull anchor ropes, concrete extension foundations, and concrete connecting beams, and the anchors on both sides of the slope mainly play an auxiliary role; the steel columns and winding annular nets in the present invention are set with a certain forward tilt angle, so that the angle of the deposits formed by the interception of solid materials such as debris flows is close to their natural repose angle, reducing the earth pressure of the deposits on the debris flow interception net. The present invention reduces the requirements of the interception and protection structure on the geological conditions of the slope, widens the span of the protection net, and is suitable for the scenes of interception and water-blocking management in rivers and wider channels. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the flexible water-blocking and water-passing structure applicable to ultra-wide rivers of the present invention; Figure 2 It is a cross-sectional schematic diagram of a flexible water-blocking and water-passing structure applicable to an ultra-wide river channel according to the present invention; Figure 3 It is a partially enlarged schematic diagram of a concrete extended foundation in a flexible water-blocking structure suitable for ultra-wide rivers of the present invention; Figure 4 It is a partially enlarged schematic diagram of another concrete extended foundation in the flexible water-blocking and consolidating structure suitable for ultra-wide rivers according to the present invention.

[0018] In the figure, 1. Concrete extended foundation; 101. Slope; 102. Backfill of original soil; 2. Concrete connecting beam; 3. Steel column; 4. Wire rope anchor rod; 5. Transverse wire rope; 6. Decompression ring; 7. Wrapped ring net; 8. Side anchor rod; 9. Anti-impact plastic-coated wire cage; 10. Pull-up anchor rope; 11. Anchor foundation; 12. Anchor steel bar. DETAILED DESCRIPTION

[0019] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1 This embodiment proposes a flexible water-blocking structure suitable for ultra-wide rivers, such as Figure 1As shown, it includes a retaining system, both ends of which are fixedly connected to the bank slope by a plurality of side anchor rods 8, a plurality of concrete extension foundations 1 are arranged at the bottom of the retaining system, the concrete extension foundations 1 are embedded in the ground, and the angle between the retaining system and the ground on the upstream side is an acute angle, a concrete connecting beam 2 is arranged between the retaining system and the concrete extension foundation 1, the concrete extension foundations 1 are connected by the concrete connecting beam 2, a plurality of anchoring foundations 11 are arranged on the upstream side of the concrete extension foundation 1 along the river channel, the bottom of the retaining system is fixedly connected to the concrete connecting beam 2 and the concrete extension foundation 1, and the top of the retaining system is connected to the anchoring foundation 11 by a cable.

[0021] Example 2 This embodiment proposes a flexible water-blocking structure suitable for ultra-wide rivers, such as Figure 1 As shown, it includes a retaining system, both ends of which are fixedly connected to the bank slope by a plurality of side anchor rods 8, a plurality of concrete extension foundations 1 are arranged at the bottom of the retaining system, the concrete extension foundations 1 are embedded in the ground, and the angle between the retaining system and the ground on the upstream side is an acute angle, a concrete connecting beam 2 is arranged between the retaining system and the concrete extension foundation 1, the concrete extension foundations 1 are connected by the concrete connecting beam 2, a plurality of anchoring foundations 11 are arranged on the upstream side of the concrete extension foundation 1 along the river channel, the bottom of the retaining system is fixedly connected to the concrete connecting beam 2 and the concrete extension foundation 1, and the top of the retaining system is connected to the anchoring foundation 11 by a cable. The barrier system includes a winding ring net 7, both ends of which are fixed to the slope by a number of side anchor rods 8, and the winding ring net 7 is fixed by a number of steel columns 3 and a number of transverse steel wire ropes 5. The steel columns 3 are arranged in parallel, and the transverse steel wire ropes 5 are arranged in parallel; the angle between the axis of the steel column 3 and the plane on the upstream side of the top of the concrete connecting beam 2 is an acute angle; the angle between the mesh surface of the winding ring net 7 and the plane on the upstream side of the top of the concrete connecting beam 2 is an acute angle.

[0022] Example 3 This embodiment proposes a flexible water-blocking structure suitable for ultra-wide rivers, such as Figure 1As shown, it includes a retaining system, both ends of which are fixedly connected to the bank slope by a plurality of side anchor rods 8, a plurality of concrete extension foundations 1 are arranged at the bottom of the retaining system, the concrete extension foundations 1 are embedded in the ground, and the angle between the retaining system and the ground on the upstream side is an acute angle, a concrete connecting beam 2 is arranged between the retaining system and the concrete extension foundation 1, the concrete extension foundations 1 are connected by the concrete connecting beam 2, a plurality of anchoring foundations 11 are arranged on the upstream side of the concrete extension foundation 1 along the river channel, the bottom of the retaining system is fixedly connected to the concrete connecting beam 2 and the concrete extension foundation 1, and the top of the retaining system is connected to the anchoring foundation 11 by a cable. The barrier system includes a winding ring net 7, both ends of which are fixed to the slope by a number of side anchor rods 8, and the winding ring net 7 is fixed by a number of steel columns 3 and a number of transverse steel wire ropes 5. The steel columns 3 are arranged in parallel, and the transverse steel wire ropes 5 are arranged in parallel; the angle between the axis of the steel column 3 and the plane on the upstream side of the top of the concrete connecting beam 2 is an acute angle; the angle between the mesh surface of the winding ring net 7 and the plane on the upstream side of the top of the concrete connecting beam 2 is an acute angle.

[0023] Combination Figure 2 As shown, a number of hanging ears are arranged at equal intervals along the axial direction on the outer wall of the steel column 3, and the two ends of the transverse steel wire rope 5 are respectively connected to the side anchor rods 8, and the transverse steel wire rope 5 passes through the hanging ears on the steel columns 3; the transverse steel wire rope 5 is interlaced and fitted with the winding type annular net 7. A number of decompression rings 6 are arranged on the winding type annular net 7, and the winding type annular net 7 includes a number of flexible protective nets, and the flexible protective nets are connected by sewing shackles; the angle between the mesh surface of the flexible protective net and the plane on the upstream side of the top of the concrete connecting beam 2 is an acute angle.

[0024] Example 4 This embodiment proposes a flexible water-blocking structure suitable for ultra-wide rivers, such as Figure 1 As shown, it includes a retaining system, both ends of which are fixedly connected to the bank slope by a plurality of side anchor rods 8, a plurality of concrete extension foundations 1 are arranged at the bottom of the retaining system, the concrete extension foundations 1 are embedded in the ground, and the angle between the retaining system and the ground on the upstream side is an acute angle, a concrete connecting beam 2 is arranged between the retaining system and the concrete extension foundation 1, the concrete extension foundations 1 are connected by the concrete connecting beam 2, a plurality of anchoring foundations 11 are arranged on the upstream side of the concrete extension foundation 1 along the river channel, the bottom of the retaining system is fixedly connected to the concrete connecting beam 2 and the concrete extension foundation 1, and the top of the retaining system is connected to the anchoring foundation 11 by a cable.

[0025] The barrier system includes a winding ring net 7, both ends of which are fixed to the bank slope by a number of side anchor rods 8. The winding ring net 7 is fixed by a number of steel columns 3 and a number of transverse steel wire ropes 5. The steel columns 3 are arranged in parallel, and the transverse steel wire ropes 5 are arranged in parallel. The angle between the axis of the steel column 3 and the plane on the upstream side of the top of the concrete connecting beam 2 is an acute angle. The angle between the mesh surface of the winding ring net 7 and the plane on the upstream side of the top of the concrete connecting beam 2 is an acute angle. Figure 2 As shown, a number of hanging ears are arranged on the outer wall of the steel column 3 at equal intervals along the axial direction, and the two ends of the transverse steel wire rope 5 are respectively connected to the side anchor rods 8, and the transverse steel wire rope 5 passes through the hanging ears on the steel columns 3 respectively; the transverse steel wire rope 5 is interlaced and fitted with the winding annular net 7.

[0026] A plurality of pressure relief rings 6 are arranged on the winding ring net 7. The winding ring net 7 includes a plurality of flexible protective nets, which are connected by sewing shackles; the angle between the mesh surface of the flexible protective net and the plane on the upstream side of the top of the concrete connecting beam 2 is an acute angle. Reinforcement ribs are arranged on the side wall of the bottom end of the steel column 3, and anchoring steel bars 12 are arranged in the concrete expansion foundation 1. The anchoring steel bars 12 pass through the reinforcement ribs on the steel column 3 and the concrete connecting beam 2 in sequence and then are embedded in the concrete expansion foundation 1; an inclined surface is arranged on the top of the concrete connecting beam 2, and the end face of one end of the steel column 3 is arranged to fit the inclined surface of the top of the concrete connecting beam 2. The concrete connecting beam 2 includes a plurality of transverse connecting beams, which are located on the same straight line, and are fixedly connected by seam steel bars; the concrete expansion foundations 1 are connected by transverse connecting beams, and the concrete expansion foundation 1 is arranged in coordination with the steel column 3 and the anchoring foundation 11.

[0027] Example 5 This embodiment proposes a flexible water-blocking structure suitable for ultra-wide rivers, such as Figure 1 As shown, it includes a retaining system, both ends of which are fixedly connected to the bank slope by a plurality of side anchor rods 8, a plurality of concrete extension foundations 1 are arranged at the bottom of the retaining system, the concrete extension foundations 1 are embedded in the ground, and the angle between the retaining system and the ground on the upstream side is an acute angle, a concrete connecting beam 2 is arranged between the retaining system and the concrete extension foundation 1, the concrete extension foundations 1 are connected by the concrete connecting beam 2, a plurality of anchoring foundations 11 are arranged on the upstream side of the concrete extension foundation 1 along the river channel, the bottom of the retaining system is fixedly connected to the concrete connecting beam 2 and the concrete extension foundation 1, and the top of the retaining system is connected to the anchoring foundation 11 by a cable.

[0028] The barrier system includes a winding ring net 7, both ends of which are fixed to the slope by a number of side anchor rods 8, and the winding ring net 7 is fixed by a number of steel columns 3 and a number of transverse steel wire ropes 5. The steel columns 3 are arranged in parallel, and the transverse steel wire ropes 5 are arranged in parallel; the angle between the axis of the steel column 3 and the plane on the upstream side of the top of the concrete connecting beam 2 is an acute angle; the angle between the mesh surface of the winding ring net 7 and the plane on the upstream side of the top of the concrete connecting beam 2 is an acute angle.

[0029] Combination Figure 2 As shown, a number of hanging ears are arranged at equal intervals along the axial direction on the outer wall of the steel column 3, and the two ends of the transverse steel wire rope 5 are respectively connected to the side anchor rods 8, and the transverse steel wire rope 5 passes through the hanging ears on the steel columns 3 respectively; the transverse steel wire rope 5 is interlaced and fitted with the winding type annular net 7. A number of decompression rings 6 are arranged on the winding type annular net 7, and the winding type annular net 7 includes a number of flexible protective nets, and the flexible protective nets are connected by sewing shackles; the angle between the mesh surface of the flexible protective net and the plane on the upstream side of the top of the concrete connecting beam 2 is an acute angle. Reinforcement ribs are arranged on the side wall of the bottom end of the steel column 3, and anchor steel bars 12 are arranged in the concrete expansion foundation 1. The anchor steel bars 12 pass through the reinforcement ribs on the steel column 3 and the concrete connecting beam 2 in turn and then are embedded in the concrete expansion foundation 1; the top of the concrete connecting beam 2 is provided with an inclined surface, and the end surface of one end of the steel column 3 is fitted with the inclined surface of the top of the concrete connecting beam 2.

[0030] The concrete connecting beam 2 includes a plurality of transverse connecting beams, which are located on the same straight line and are fixedly connected by cross-seam steel bars; the concrete extension foundations 1 are connected by transverse connecting beams, and the concrete extension foundation 1 is arranged in cooperation with the steel column 3 and the anchor foundation 11. An upper pull anchor buckle is arranged on the end of the steel column 3 away from the concrete extension foundation 1, and a steel wire rope anchor rod 4 is fixedly arranged in the anchor foundation 11. An upper pull anchor rope 10 is arranged between the steel wire rope anchor rod 4 and the steel column 3, and one end of the upper pull anchor rope 10 is fixedly connected to the steel wire rope anchor rod 4, and the other end is fixedly connected to the upper pull anchor buckle on the steel column 3. Anti-impact plastic-coated wire cages 9 are arranged on both sides of the concrete connecting beam 2, and the anti-impact plastic-coated wire cages 9 are respectively arranged in close contact with the concrete connecting beam 2 and the concrete extension foundation 1.

[0031] Example 6 This embodiment proposes a flexible water-blocking structure suitable for ultra-wide rivers, such as Figure 1As shown, it includes a retaining system, both ends of which are fixedly connected to the bank slope by a plurality of side anchor rods 8, a plurality of concrete extension foundations 1 are arranged at the bottom of the retaining system, the concrete extension foundations 1 are embedded in the ground, and the angle between the retaining system and the ground on the upstream side is an acute angle, a concrete connecting beam 2 is arranged between the retaining system and the concrete extension foundation 1, the concrete extension foundations 1 are connected by the concrete connecting beam 2, a plurality of anchoring foundations 11 are arranged on the upstream side of the concrete extension foundation 1 along the river channel, the bottom of the retaining system is fixedly connected to the concrete connecting beam 2 and the concrete extension foundation 1, and the top of the retaining system is connected to the anchoring foundation 11 by a cable.

[0032] The barrier system includes a winding ring net 7, both ends of which are fixed to the slope by a number of side anchor rods 8, and the winding ring net 7 is fixed by a number of steel columns 3 and a number of transverse steel wire ropes 5. The steel columns 3 are arranged in parallel, and the transverse steel wire ropes 5 are arranged in parallel; the angle between the axis of the steel column 3 and the plane on the upstream side of the top of the concrete connecting beam 2 is an acute angle; the angle between the mesh surface of the winding ring net 7 and the plane on the upstream side of the top of the concrete connecting beam 2 is an acute angle.

[0033] Combination Figure 2 As shown, a number of hanging ears are arranged at equal intervals along the axial direction on the outer wall of the steel column 3, and the two ends of the transverse steel wire rope 5 are respectively connected to the side anchor rods 8, and the transverse steel wire rope 5 passes through the hanging ears on the steel columns 3 respectively; the transverse steel wire rope 5 is interlaced and fitted with the winding type annular net 7. A number of decompression rings 6 are arranged on the winding type annular net 7, and the winding type annular net 7 includes a number of flexible protective nets, and the flexible protective nets are connected by sewing shackles; the angle between the mesh surface of the flexible protective net and the plane on the upstream side of the top of the concrete connecting beam 2 is an acute angle. Reinforcement ribs are arranged on the side wall of the bottom end of the steel column 3, and anchor steel bars 12 are arranged in the concrete expansion foundation 1. The anchor steel bars 12 pass through the reinforcement ribs on the steel column 3 and the concrete connecting beam 2 in turn and then are embedded in the concrete expansion foundation 1; the top of the concrete connecting beam 2 is provided with an inclined surface, and the end surface of one end of the steel column 3 is fitted with the inclined surface of the top of the concrete connecting beam 2.

[0034] The concrete connecting beam 2 includes a plurality of transverse connecting beams, which are located on the same straight line and are fixedly connected by cross-seam steel bars; the concrete expansion foundations 1 are connected by transverse connecting beams, which are arranged in cooperation with the steel column 3 and the anchor foundation 11. An upper pull anchor buckle is arranged on the end of the steel column 3 away from the concrete expansion foundation 1, and a wire rope anchor rod 4 is fixedly arranged in the anchor foundation 11. An upper pull anchor rope 10 is arranged between the wire rope anchor rod 4 and the steel column 3, and one end of the upper pull anchor rope 10 is fixedly connected to the wire rope anchor rod 4, and the other end is fixedly connected to the upper pull anchor buckle on the steel column 3. Anti-impact plastic-coated wire cages 9 are respectively arranged on both sides of the concrete connecting beam 2, and the anti-impact plastic-coated wire cages 9 are respectively arranged to fit the concrete connecting beam 2 and the concrete expansion foundation 1. A plurality of wire rope anchor rods 4 are embedded at equal intervals on the top of the transverse connecting beam, and the wire rope anchor rods 4 on the transverse connecting beam are respectively connected to the transverse wire rope 5 at the lowest end.

[0035] Combination Figure 3 and Figure 4 As shown, the structure of the concrete extended foundation 1 is an inverted "T" shape or a regular trapezoidal structure, and slopes 101 are respectively arranged on both sides of the concrete extended foundation 1. The top of the concrete extended foundation 1 is fitted with a transverse connecting beam, and the anchor steel bar 12 passes through the transverse connecting beam and is embedded in the smaller end of the end face of the concrete extended foundation 1; backfilled original soil 102 is fitted between the concrete extended foundation 1 and the transverse connecting beam, and the backfilled original soil 102 is fitted between the concrete extended foundation 1 and the slope 101.

[0036] The present invention adopts the form of "concrete extended foundation 1+steel column 3", that is, a concrete extended foundation 1 is set in the riverbed or channel, a steel column 3 is set to be connected with the upper part of the concrete extended foundation 1, and a concrete connecting beam 2 is set on the top surface of the concrete extended foundation 1 along the axis of the winding type ring net 7; an anchor foundation 11 is set on the upstream side of the winding type ring net 7, a steel wire rope anchor rod 4 is set inside the anchor foundation 11, and the upper pull anchor rope 10 passes through the steel wire rope anchor rod 4 and is connected to the steel column 3, so as to improve the anti-overturning ability of the winding type ring net 7; the steel column 3 in the present invention is set with a certain forward tilt Angle, forward inclination angle is obtained by combining and analyzing the natural repose angle of the accumulation body, so that the angle of the accumulation body formed by the interception of solid materials such as debris flow is close to its natural repose angle, reducing the earth pressure of the accumulation material on the debris flow retaining net; anti-impact plastic-coated wire cages 9 are arranged upstream and downstream of the concrete extended foundation 1 and the concrete connecting beam 2 to protect the concrete extended foundation 1; the present invention is suitable for solid interception scenarios of medium and small debris flow ditches with wide rivers or ditches and small gradients, especially solid interception scenarios when the bottom foundation of the ditch is highly weathered rock or deep cover layer.

[0037] When the retaining water-passing structure of the present invention is impacted by a debris flow or floating objects in a river channel, the winding annular net 7 in the retaining system is first deformed by the impact of the debris flow, and the impact load is transmitted to the transverse steel wire rope 5. With the continuous action of the debris flow or floating objects, the deformation of the winding annular net 7 and the transverse steel wire rope 5 increases. When the force on the transverse steel wire rope 5 exceeds the starting threshold of the pressure relief ring 6, the pressure relief ring 6 starts to start consuming energy, and the pull-up anchor rope 10 connected to the anchor steel bar 12 and the steel column 3 starts to tighten. Finally, the steel column 3, the anchor steel bar 12, the wire rope anchor rod 4 and the side anchor rod 8 respectively transmit the force to the concrete extended foundation 1, the concrete connecting beam 2, the anchor foundation 11 and the rocks on both sides.

[0038] The concrete expansion foundation 1, the concrete connecting beam 2, the steel column 3, the upper anchor rope 10 and the anchor foundation 11 in the present invention together constitute the anti-skid and anti-tilt system in the present invention. The concrete expansion foundation 1 and the steel column 3 should be arranged coaxially, and the spacing between the concrete expansion foundations 1 is related to the flow rate, flow velocity, fluid impact pressure, and the impact force and pile pressure formed by various solid materials. Generally, it is preferably 8m-12m in practical applications.

[0039] The specific arrangement of the concrete extended foundation 1 and the concrete connecting beam 2 in the present invention is that the concrete extended foundation 1 is fixed in the stratum in a hook shape. During the construction process, the slope 101 is first excavated. The slope ratio of the slope 101 is related to the stratum lithology. When the stratum conditions permit, the slope ratio of the slope 101 should be controlled between 1:0.3 and 1:0.5 to obtain better anti-slip and anti-tilt effects.

[0040] In the present invention, the concrete extended foundation 1 is covered with backfilled original soil 102, and the compaction degree of the backfilled original soil 102 should be not less than 0.95. The concrete connecting beam 2 should be cast as a whole in the same warehouse as the concrete extended foundation 1. When the concrete connecting beam 2 is too long and a construction joint needs to be set, a plum-shaped or grid-shaped cross-joint inserted reinforcement should be set at the construction joint. The concrete connecting beam 2 is pre-embedded with a wire rope anchor rod 4, and the pre-embedded wire rope anchor rod 4 on the concrete connecting beam 2 is respectively connected to the transverse wire rope 5 at the bottom of the retaining system to reduce the deformation of the winding ring net 7 in the half-storage state and improve the stress condition of the winding ring net 7. Anti-impact plastic-coated wire cages 9 are set upstream and downstream of the concrete extended foundation 1 and the concrete connecting beam 2 to protect the concrete extended foundation.

[0041] The present invention mainly relies on the tension provided by the upper pull anchor rope 10, the deadweight of the concrete expansion foundation 1, the concrete connecting beam 2, and the friction between the concrete expansion foundation 1, the concrete connecting beam 2 and the ground to disperse and resist dynamic load impact and accumulated static load, and can be applied to rivers and ditches with a width of 100-220m.

[0042] In order to reduce the active earth pressure generated by the deposits blocked upstream of the dam body in the full reservoir state, the steel column 3 and the winding ring net 7 are both tilted forward at a certain angle. In the half reservoir state, the steel column 3 and the winding ring net 7 only bear the impact of the debris flow; in the full reservoir state, the deposit is in a natural stable state, which reduces the static load of the deposits on the winding ring net 7, so that the deposits are always in a safe state. After the retaining system is full of silt, it can be dredged and then continued to be used, or it can be rebuilt in another suitable location.

Claims

1. A flexible water-blocking structure suitable for ultra-wide rivers, characterized in that: The invention comprises a retaining system, wherein both ends of the retaining system are fixedly connected to the bank slope via a plurality of side anchor rods (8), a plurality of concrete extension foundations (1) are arranged at the bottom of the retaining system, the concrete extension foundations (1) are embedded in the ground, the angle between the retaining system and the ground on the upstream side is an acute angle, a concrete connecting beam (2) is arranged between the retaining system and the concrete extension foundation (1), the concrete extension foundations (1) are connected via the concrete connecting beam (2), the concrete extension foundations (1) are arranged along the upstream side of the river channel with a plurality of anchor foundations (11), the bottom of the retaining system is fixedly connected to the concrete connecting beam (2) and the concrete extension foundation (1), and the top of the retaining system is connected to the anchor foundation (11) via a cable.

2. The flexible water-blocking structure suitable for ultra-wide rivers according to claim 1 is characterized in that: The barrier system comprises a winding type annular net (7), both ends of which are fixed to the bank slope by a plurality of side anchor rods (8), the winding type annular net (7) is fixed by a plurality of steel columns (3) and a plurality of transverse steel wire ropes (5), the plurality of steel columns (3) are arranged in parallel, and the plurality of transverse steel wire ropes (5) are arranged in parallel; the angle between the axis of the steel column (3) and the plane on the upstream side of the top of the concrete connecting beam (2) is an acute angle; the angle between the mesh surface of the winding type annular net (7) and the plane on the upstream side of the top of the concrete connecting beam (2) is an acute angle.

3. The flexible water-blocking structure suitable for ultra-wide rivers according to claim 2 is characterized in that: A plurality of hanging ears are arranged at equal intervals along the axial direction on the outer wall of the steel column (3); both ends of the transverse steel wire rope (5) are respectively connected to the side anchor rods (8); the transverse steel wire rope (5) passes through the hanging ears on the plurality of steel columns (3); the transverse steel wire rope (5) is interlaced and fitted with the winding type annular net (7).

4. The flexible water-blocking structure for ultra-wide rivers according to claim 3 is characterized in that: A plurality of pressure relief rings (6) are arranged on the winding type annular net (7), and the winding type annular net (7) comprises a plurality of flexible protection nets, and the plurality of flexible protection nets are connected by sewing shackles; the angle between the net surface of the flexible protection net and the plane on the upstream side of the top of the concrete connecting beam (2) is an acute angle.

5. The flexible water-blocking and water-passing structure suitable for ultra-wide rivers according to claim 4 is characterized in that: A reinforcing rib is provided on the side wall of the bottom end of the steel column (3); an anchoring steel bar (12) is provided in the concrete expansion foundation (1); the anchoring steel bar (12) passes through the reinforcing rib on the steel column (3) and the concrete connecting beam (2) in sequence and then is embedded in the concrete expansion foundation (1); an inclined surface is provided on the top of the concrete connecting beam (2); an end face of one end of the steel column (3) is arranged to fit the inclined surface on the top of the concrete connecting beam (2).

6. The flexible water-blocking and water-passing structure suitable for ultra-wide rivers according to claim 5 is characterized in that: The concrete connecting beams (2) include a plurality of transverse connecting beams, the plurality of transverse connecting beams are located on the same straight line, and the plurality of transverse connecting beams are respectively fixedly connected by cross-seam steel bars; the concrete extended foundations (1) are respectively connected by transverse connecting beams, and the concrete extended foundations (1) are arranged in coordination with the steel columns (3) and the anchor foundations (11).

7. The flexible water-blocking and water-passing structure suitable for ultra-wide rivers according to claim 6 is characterized in that: An upper pull anchor buckle is arranged on the end of the steel column (3) away from the concrete expansion foundation (1), a steel wire rope anchor rod (4) is fixedly arranged in the anchor foundation (11), an upper pull anchor rope (10) is arranged between the steel wire rope anchor rod (4) and the steel column (3), one end of the upper pull anchor rope (10) is fixedly connected to the steel wire rope anchor rod (4), and the other end is fixedly connected to the upper pull anchor buckle on the steel column (3).

8. The flexible water-blocking structure for ultra-wide rivers according to claim 7 is characterized in that: Anti-impact plastic-coated wire cages (9) are respectively arranged on both sides of the concrete connecting beam (2), and the anti-impact plastic-coated wire cages (9) are respectively arranged in close contact with the concrete connecting beam (2) and the concrete extended foundation (1).

9. The flexible water-blocking and water-passing structure suitable for ultra-wide rivers according to claim 8 is characterized in that: A plurality of steel wire rope anchor rods (4) are embedded at equal intervals on the top of the transverse connecting beam, and the steel wire rope anchor rods (4) on the transverse connecting beam are respectively connected to the transverse steel wire ropes (5) at the bottom.

10. The flexible water-blocking and water-passing structure suitable for ultra-wide rivers according to claim 9, characterized in that: The structure of the concrete expansion foundation (1) is in an inverted "T" shape or a regular trapezoidal structure. Slopes (101) are respectively arranged on both sides of the concrete expansion foundation (1). The top of the concrete expansion foundation (1) is arranged in contact with a transverse connecting beam. The anchoring steel bar (12) passes through the transverse connecting beam and is embedded in the smaller end of the end face of the concrete expansion foundation (1). Backfilled original soil (102) is arranged in contact between the concrete expansion foundation (1) and the transverse connecting beam. The backfilled original soil (102) is arranged in contact between the concrete expansion foundation (1) and the slope (101).

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