CN111663492A

CN111663492A - River channel ecological management construction process

Info

Publication number: CN111663492A
Application number: CN202010549482.1A
Authority: CN
Inventors: 黎苏缘; 黎开全; 孙朝洪; 戴勤波; 万伟; 黎开云; 李雷; 张治彬; 黎开平; 黎亮
Original assignee: Chongqing Tiandi Ren Construction Group Co ltd
Current assignee: Chongqing Tiandi Ren Construction Group Co ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2020-09-15

Abstract

The invention relates to the technical field of river regulation, in particular to a river ecological regulation construction process, which comprises the following steps of S1, excavating a bank protection foundation; s2, constructing gabion cage ballast feet at the bank foot of the bank protection foundation; s3, constructing a hydrophilic platform on the top surface of the foot of the gabion cage, wherein the elevation of the hydrophilic platform is 0.2-0.5 m higher than the normal water level; s4, constructing a slope protection on a bank slope surface of the bank protection foundation; s5, constructing a pedestrian passageway on the bank top of the bank protection foundation; and S6, setting a pedestrian ladder step between the pedestrian passage and the hydrophilic platform. The invention not only beautifies the riparian environment and brings good hydrophilic environment for people, but also can form healthy ecological environment of water area, improve the image of the field and town and improve the living environment of people.

Description

River channel ecological management construction process

Technical Field

The invention relates to the technical field of river regulation, in particular to a river ecological regulation construction process.

Background

The ecology of the river channel means that "the river is alive", and the existence means that the river can "breathe in and breathe out" like a living thing and can "drink water and drain". The basic basis of ecological management requirements is that 'the natural planning is respected, comprehensive utilization of water resources and ecological requirements are considered on the premise of guaranteeing flood control safety, the natural form of a river channel is kept as much as possible, and water and harmonious conditions of people are promoted'.

The traditional river comprehensive treatment technology focuses on the functions of the river, such as flood discharge, waterlogging drainage, water and soil conservation and the like, and the river comprehensive treatment technology is most widely applied to bank protection in river regulation engineering, such as wall type bank protection, slope type bank protection and the like. Taking wall type revetment as an example, the wall type revetment generally adopts reinforced concrete retaining wall structure or stone masonry retaining wall structure, which has the advantages of stable structure and strong impact force of water flow resistance. But neglects the function of the river as the urban landscape, and simultaneously cuts off the ecological connection between the river and the two banks, thereby causing serious ecological damage. That is to say, when the traditional bank protection type is adopted to control the river channel, the river channel control project is not fully realized to be a comprehensive control project developed by taking into account the ecological environment of the river channel, the human water and harmonic concept is not firmly established, the river channel control thought and scheme are not fully integrated into the ecological concept, only the flood control safety is emphasized, but the ecological function is ignored, the ecological environment of the river channel is lost, and the functions of recovering the ecology of the river channel and greening the landscape are not achieved.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a river ecological management construction process, which not only can beautify the river bank environment and bring good hydrophilic environment for people, but also can form a healthy water area ecological environment, improve the image of the field and the town and improve the living environment.

The above object of the present invention is achieved by the following technical solutions:

a river channel ecological management construction process comprises the following steps:

s1, excavating a bank protection foundation;

s2, constructing gabion cage ballast feet at the bank foot of the bank protection foundation;

s3, constructing a hydrophilic platform on the top surface of the foot of the gabion cage, wherein the elevation of the hydrophilic platform is 0.2-0.5 m higher than the normal water level;

s4, constructing a slope protection on a bank slope surface of the bank protection foundation;

s5, constructing a pedestrian passageway on the bank top of the bank protection foundation;

and S6, setting a pedestrian ladder step between the pedestrian passage and the hydrophilic platform.

By adopting the technical scheme, the gabion cage is adopted at the bank foot of the bank protection foundation, so that the advantages of flexibility, water permeability, integrity and ecology are achieved, water and soil loss is effectively reduced, and the control effect on river course slope protection and debris flow is achieved; by constructing the hydrophilic platform on the top surface of the foot of the gabion cage, a good hydrophilic environment can be brought to people, and people play with water conveniently; through constructing the pedestrian passageway on the bank top, satisfy people and walk, view and admire demands such as river course scenery, be favorable to promoting the field and town image, improve the people and live in the environment to through setting up pedestrian's ladder step, the people of being convenient for are down to the hydrophilic platform, satisfy hydrophilic needs. Therefore, the river bank environment can be beautified, a good hydrophilic environment is brought to people, a healthy water area ecological environment can be formed, the image of a field town is improved, and the living environment of people is improved.

The present invention in a preferred example may be further configured to: the construction of the gabion ballast in the step S2 comprises the following specific steps:

s21, assembling the gabion cage;

s22, paying off to determine an outer edge line of the guest cage;

s23, mounting the assembled gabion cage at the determined position;

s24, filling stones into the gabion cages to form gabion walls, and arranging anti-filtering layers on the backs and the bottoms of the gabion walls.

By adopting the technical scheme, the construction of the gabion foot-stabilizing is realized, the construction process is simple and rapid, the construction is convenient, the anti-seepage performance is good, and the overall use performance is improved.

The present invention in a preferred example may be further configured to: the width of the hydrophilic platform in the step S3 is 1m or 1.5m, the hydrophilic platform comprises a gravel cushion layer, a C20 concrete layer and a bluestone plate layer which are sequentially paved from bottom to top, an expansion joint is arranged at intervals of 3m on the hydrophilic platform, and the expansion joint is separated by an asphalt fir board.

Through adopting above-mentioned technical scheme, overall structure intensity is high, and the scour prevention ability reinforce satisfies people's hydrophilic demand.

The present invention in a preferred example may be further configured to: and S4, earth and stone backfilling is carried out before slope protection is constructed, the slope protection comprises C25 reinforced concrete ribs buried on the earth and stone backfilled surface and radix ophiopogonis turf planted on the surfaces of the C25 reinforced concrete ribs, and the slope ratio of the slope protection is 1: 1.8-3.5.

Through adopting above-mentioned technical scheme, improve bank protection overall structure stability and intensity, it is pleasing to the eye to afforest, effectively reduces soil erosion and water loss.

The present invention in a preferred example may be further configured to: and S5, the pedestrian passageway penetrates the whole line along the water flow direction of the river channel, the width of the pedestrian passageway is 3m, road edges are arranged on two sides of the pedestrian passageway, the pedestrian passageway comprises a gravel cushion layer and a C20 concrete road surface layer which are sequentially laid from bottom to top, an expansion joint is arranged at the interval of 5m in the pedestrian passageway, and the expansion joints are separated by asphalt fir boards.

Through adopting above-mentioned technical scheme, overall structure is firm, and the people of being convenient for are current.

The present invention in a preferred example may be further configured to: plants are planted in the pedestrian passageway in the step S5 every 3m, and the height of the plants is 1.8-2 m; the side of the water facing side of the pedestrian passageway is provided with a protective railing, and the outer side of the water facing side of the pedestrian passageway is provided with a drainage ditch.

By adopting the technical scheme, the river bank environment can be beautified by planting the plants, the landscape effect is improved, and people can take care of sunshade; through setting up the protection railing, realize safety protection, through setting up the escape canal, do benefit to the bank top drainage.

The present invention in a preferred example may be further configured to: in the step S6, a plurality of pedestrian steps are arranged at intervals along the water flow direction of the river, and the distance between every two adjacent pedestrian steps is 200-400 m.

By adopting the technical scheme, people can conveniently go down to the hydrophilic platform from different positions on the top of the bank, and the device is more humanized and convenient to use.

The present invention in a preferred example may be further configured to: the drainage culvert pipe that the shore protection foot link up to the bank top is buried underground to the bank protection basis, check cage town foot, bank protection and pedestrian passageway are located the drainage culvert pipe top, drainage culvert pipe both ends are provided with catch basin and stilling basin respectively, the catch basin is located and is close to bank protection basis bank top department, the stilling basin is located and is close to bank protection basis bank foot department.

By adopting the technical scheme, the underground water discharge is realized, the whole arrangement is reasonable, and the construction is convenient.

In summary, the invention includes at least one of the following beneficial technical effects:

1. not only can beautify the river bank environment and bring good hydrophilic environment to people, but also can form healthy ecological environment of water area, improve the image of the field and town and improve the living environment of people;

2. the hydrophilic platform adopts a multilayer structure, has high overall structural strength and strong anti-scouring capability, and meets the hydrophilic requirements of people;

3. through setting up the drainage culvert pipe, realize the emission of the groundwater below ground, it is reasonable wholly to arrange, construction convenience.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of a drainage culvert according to an embodiment of the present invention;

fig. 3 is a sectional view taken along line a-a of fig. 2.

Reference numerals: 1. c, stabilizing feet by a gabion; 2. a hydrophilic platform; 3. backfilling soil and stones; 4. slope protection; 41. c25 reinforced concrete rib grid; 42. radix Ophiopogonis turf; 5. a pedestrian passageway; 6. a guard rail; 7. a drainage ditch; 8. plant growing; 9. a drainage culvert pipe; 10. a water collecting tank; 11. a stilling pool.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the invention discloses a river ecological management construction process, which comprises the following steps:

s1, excavating a bank protection foundation, accurately measuring and setting off the line, excavating the bank protection foundation by using a 1 cubic meter excavator according to the set line, and excavating the bank protection foundation until the position of a control elevation is reached. After the excavator excavates waste soil, residual soil and residual soil at the bottom of the pit are manually cleaned, and the bottom of the pit and the wall of the pit are cleaned to be smooth and perpendicular to each other.

S2, constructing a gabion cage ballast 1 at a bank protection foundation bank foot, and comprising the following specific steps:

and S21, assembling the gabion cage. The step of gabion cage assembly in this embodiment is: s211, taking out a complete gabion unit, correcting the bending deformation part, and leveling by pulling with a pliers and stepping with a foot; s212, erecting the partition board, the front panel and the rear panel, fixing the angular points by using the edge steel wire extension parts, ensuring that the upper edge of each vertical panel is on the same horizontal plane, and particularly paying attention to the fact that two vertical edges and the bottom edge of the partition board are on the same vertical plane; s213, twisting at intervals of 10-15 cm, namely double-ring-single-ring-double-ring, twisting the separators along a vertical line, wherein the twisted separators are on the same vertical plane; s214, the gabion is used for turning, the front panel is not twisted during twisting, is folded under the bottom plate, and is slightly twisted by a steel wire rope for a plurality of points, so that the gabion is convenient to move and install; s215, assembling the gabions according to the principle that the gabions are regular in shape and firm in twisting, the upper edges of all the vertical panels are on the same horizontal plane, and the edge of the cover plate can be twisted with the horizontal edge of the upper end of the panel. The gabion cage of the embodiment adopts zinc-5% aluminum-mixed rare earth alloy steel wires, the length of the gabion cage is 3m, the width of the gabion cage is 1m and 1.5m, and the height of the gabion cage is 1m and 1.5 m; the adhesion requirement of the gabion coating is as follows: when the steel wire is wound around a mandrel with 2 times of the diameter of the steel wire for 6 circles, the steel wire does not peel or crack by rubbing the steel wire with fingers, and the steel wire meets the YB/T4190-2018 standard; the mesh size of the gabion cage is 8cm, the diameter of the steel wire on the mesh surface is 2.7mm, and the edge wire is 3.2 mm; the partitions are arranged in the gabion cage at intervals of 1m, and the allowable tolerance of the length, the width and the height is plus or minus 5%.

S22, paying off to determine the outer edge line of the guest cage.

S23, mounting the assembled gabion cage at the determined position; the stone is convenient to fill stones, the cover plates are twisted and steel wires are saved; when the lattice guest cage meets a corner, the front panel is not twisted during assembly, the front panel is folded under the bottom plate, the lattice guest cage is sleeved into another lattice guest cage, and the bottom plate is overlapped; the edges of adjacent gabion cages are twisted together by using long steel wires, and the edges are twisted by using the long steel wires at the interval of 10-15 cm; the bottom edge of the gabion cage on the second layer and the parts above needs to be twisted together with the lower layer, the twisting requirement is the same as that of the gabion cage, and the edge steel wire lengthening part winds the adjacent edge tightly.

S24. Filling stone materials into the gabion cages to form the gabion wall, wherein the filling stone materials are required to be uniformly filled into the gabion cages on the same layer at the same time, and a single gabion cage cannot be filled at one time, and the stone materials filled with the stone materials are uniform in stone quality, difficult to weather and free of cracks, and the saturated compressive strength is not lower than 30 MPa; in the filling construction, the feeding thickness of each layer is controlled to be about 30cm, and generally a gabion cage with the height of 1m is preferably fed in three to four layers; the panel for placing the gabion wall is pressed to bulge out and be filled to cause the partition board to bend; considering the sedimentation of the filler, the stone filled on the top surface is properly higher than the gabion cage by 2-3 cm and needs to be dense, and the gaps are filled with proper small broken stones to increase the volume weight of the gabion cage; the surface of the filled stone exposed above the ground is leveled by manual stacking (dry stone mode) or mechanical building, the stone pieces are stably lapped with each other, and the plane faces outwards; after each layer of gabion cage is filled, the measurement elevation is controlled by selecting points. The back and the bottom of the gabion wall are provided with reverse filter layers, the reverse filter layers adopt permeable geotextiles, the permeable geotextiles adopt filament spun-bonded needle-punched non-woven geotextiles, and the specification of the geotextiles is 300g/m²(ii) a The joint lapping width of the permeable geotextile is not less than 15cm, and the detailed indexes refer to the national standard GB/T17639-2008 'filament spun-bonded needle-punched non-woven geotextile'. After the construction is completed, the cover plate twisting is finally carried out, and the concrete steps are as follows: a. before twisting the cover, the whole structure is checked, and some places which do not meet the construction requirements, such as bending deformation, surface unevenness and the like, are corrected: the phenomenon that the partition board is bent can be corrected by moving the stones with one bulged edge to another square grid and then straightening the partition board or straightening the stones with a steel chisel, the stones on the surface of each layer must be manually leveled, the surface is ensured to be smooth, the porosity is reduced as much as possible, the height of the partition board is 2.5-4 cm, and the partition board with the top embedded below the stones and not in place in twisting can be tilted with the steel chisel; b. twisting the edge of the cover plate and the upper edge of the vertical panel and the upper edges of the reprinting panel and the clapboard at intervals by using a single steel wire and a double steel wire with the length of 1.4 m; c. the upper edge of the vertical panel and the edge of the panel close to each other are twisted together, after the cover plates are twisted, all twisted edges form a straight line, a plurality of steel wires at the twisted points are tightly closed, the positions where the twisted edges are not closed must be corrected by steel brazes, and the upper edge and the edge of the panel are twisted together, and the positions of the twisted edges on the same layer face are corrected by the steel brazesThe surfaces must be on the same horizontal plane.

A large stone presser foot is adopted in a backfill area in front of the gabion wall, and the selected stone material is required to have good weather resistance and hard texture; the shortest side size is not less than 30cm, the saturated compressive strength is not less than 30MPa, the softening coefficient is more than 0.75, and the porosity of the backfill block stone is not more than 24%.

The backfill area of the back of the gabion wall adopts cohesive soil, the compaction degree of the cohesive soil is controlled, the compaction degree is not less than 0.91, and the rolling dry volume weight is not less than 15.5KN/m³And a relative porosity of not more than 24%.

The burial depth of the gabion foot 1 is not less than 1m, the bearing capacity of the foundation is not less than 90KPa, and when the bearing capacity does not meet the requirement, block stones are adopted for replacement and filling.

And S3, constructing a hydrophilic platform 2 on the top surface of the gabion ballast 1, wherein the elevation of the hydrophilic platform 2 is 0.2-0.5 m higher than the normal water level. In this embodiment, the width of the hydrophilic platform 2 is 1m or 1.5m, the hydrophilic platform 2 comprises a gravel cushion layer, a C20 concrete layer and a bluestone layer which are sequentially laid from bottom to top, wherein the thickness of the gravel cushion layer is 0.07m, the thickness of the C20 concrete layer is 0.1m, and the thickness of the bluestone layer is 0.03 m; hydrophilic platform 2 every 3m sets up an expansion joint, separates through pitch china fir plank in this expansion joint, and overall structure intensity is high, and the scour prevention ability reinforce satisfies people's hydrophilic demand.

And S4, constructing a protection slope 4 on the bank slope surface of the bank protection foundation. Soil and stone backfilling 3 is carried out before constructing the slope protection 4, the slope protection 4 comprises C25 reinforced concrete rib grids 41 buried on the surface of the soil and stone backfilling 3 and radix ophiopogonis turf 42 planted on the surface of the C25 reinforced concrete rib grids 41, and the slope ratio of the slope protection 4 is 1: 1.8-3.5. In the embodiment, the thickness of the planting soil is 25cm, the C25 reinforced concrete rib grids 41 are of prismatic structures, the side length of each rib grid is 3m, and the size of each end face is 0.3 x 0.3 m.

And S5, applying a worker walking channel 5 on the shore top of the shore protection foundation. The pedestrian passageway 5 penetrates through the whole line along the water flow direction of the river channel, the width of the pedestrian passageway 5 is 3m, road edges are arranged on two sides of the pedestrian passageway 5, the road edges are C20 concrete road edges, and the width of the road edges is 0.3 m; the pedestrian passageway 5 comprises a gravel cushion layer and a C20 concrete pavement layer which are sequentially paved from bottom to top, wherein the thickness of the gravel cushion layer is 0.1m, and the thickness of the C20 concrete pavement layer is 0.2 m; the pedestrian passageway 5 sets up an expansion joint every 5m, separates through pitch fir plank in this expansion joint. Plants 8 are planted in the pedestrian passageway 5 every 3m, the height of each plant 8 is 1.8-2 m, the plant 8 is an osmanthus tree in the embodiment, the branch height of the osmanthus tree is 1.2m, the diameter at breast height is 7-8 cm, and the crown width is 2-2.5 m. A protective railing 6 is arranged on the water facing side of the pedestrian passageway 5; and a drainage ditch 7 is arranged on the outer side of the water-back side of the pedestrian passage 5, the drainage ditch 7 is a drainage ditch made of M7.5 grouted bricks, the thickness of the drainage ditch is 0.24M, and the clearance size is 0.3 x 0.3M.

S6, a pedestrian ladder step is arranged between the pedestrian passage 5 and the hydrophilic platform 2. The people's bank of china step is provided with the multiunit along river course water current direction interval, and the interval between two sets of adjacent people's bank of china step is 200 ~ 400m, and every group people's bank of china step is 99 ways, and people's bank of china step adopts C20 concrete placement to form, and the people of being convenient for are from bank top different positions down to level platform 2, and is more humanized, convenient to use.

Referring to fig. 2 and 3, the present invention is not limited to the above-mentioned embodiment, and a drainage culvert 9 that is through to the top of the bank along the bank foot may be embedded in the bank protection foundation, the gabion cage ballast 1, the bank protection 4 and the pedestrian passageway 5 are located above the drainage culvert 9, a water collecting tank 10 and a stilling basin 11 are respectively provided at both ends of the drainage culvert 9, the water collecting tank 10 is located near the top of the bank protection foundation, and the stilling basin 11 is located near the bank foot of the bank protection foundation. In the embodiment, the drainage culvert pipe 9 adopts a C30 reinforced concrete prefabricated pipe, the pipeline level is a II-level pipe, the bell and spigot joint is realized, the pipeline foundation adopts a C20 concrete tubular foundation, and the thickness of the foundation is 0.5 m; the plane size of the water collecting tank 10 is 1 x 1m, the tank depth is 0.5m, the water collecting tank 10 adopts a C20 concrete gravity retaining wall structure, the top width is 0.3m, and the height is 1.5 m; the pool depth of the stilling pool 11 is 0.5m, the pool length is 1m, the pool width is 1m, the stilling pool 11 adopts a gabion structure, and a permeable geotextile inverted filter layer is arranged at the wall back and the bottom to prevent the seepage deformation damage.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A river channel ecological management construction process is characterized by comprising the following steps:

s1, excavating a bank protection foundation;

s2, constructing a gabion cage ballast (1) at a bank protection foundation bank foot;

s3, constructing a hydrophilic platform (2) on the top surface of the gabion ballast foot (1), wherein the elevation of the hydrophilic platform (2) is 0.2-0.5 m higher than the normal water level;

s4, constructing a protection slope (4) on a bank slope surface of the bank protection foundation;

s5, constructing a pedestrian passageway (5) on the bank top of the bank protection foundation;

s6, a pedestrian ladder step is arranged between the pedestrian passage (5) and the hydrophilic platform (2).

2. The river ecological management construction process according to claim 1, wherein the construction of the gabion ballast (1) in the step S2 comprises the following specific steps:

s21, assembling the gabion cage;

s22, paying off to determine an outer edge line of the guest cage;

s23, mounting the assembled gabion cage at the determined position;

3. The river ecological management construction process according to claim 1, characterized in that: the width of the hydrophilic platform (2) in the step S3 is 1m or 1.5m, the hydrophilic platform (2) comprises a gravel cushion layer, a C20 concrete layer and a bluestone layer which are sequentially paved from bottom to top, an expansion joint is arranged at intervals of 3m on the hydrophilic platform (2), and the expansion joint is separated by an asphalt fir board.

4. The river ecological management construction process according to claim 1, characterized in that: and in the step S4, earth and stone backfilling (3) is carried out before constructing the slope protection (4), the slope protection (4) comprises C25 reinforced concrete ribs (41) buried on the surface of the earth and stone backfilling (3) and radix ophiopogonis turf (42) planted on the surface of the C25 reinforced concrete ribs (41), and the slope ratio of the slope protection (4) is 1: 1.8-3.5.

5. The river ecological management construction process according to claim 1, characterized in that: in the step S5, the pedestrian passageway (5) penetrates through the whole line along the water flow direction of the river course, the width of the pedestrian passageway (5) is 3m, road edges are arranged on two sides of the pedestrian passageway (5), the pedestrian passageway (5) comprises a gravel cushion layer and a C20 concrete pavement layer which are sequentially paved from bottom to top, an expansion joint is arranged at intervals of 5m in the pedestrian passageway (5), and the expansion joints are separated by asphalt fir boards.

6. The river ecological management construction process according to claim 5, wherein the construction process comprises the following steps: in the step S5, plants (8) are planted in the pedestrian passageway (5) every 3m, and the height of each plant (8) is 1.8-2 m; a protective railing (6) is arranged on the water-facing side of the pedestrian passage (5), and a drainage ditch (7) is arranged on the outer side of the water-back side of the pedestrian passage (5).

7. The river ecological management construction process according to claim 6, wherein the construction process comprises the following steps: in the step S6, a plurality of pedestrian steps are arranged at intervals along the water flow direction of the river, and the distance between every two adjacent pedestrian steps is 200-400 m.

8. The river ecological management construction process according to claim 1, characterized in that: the drainage culvert pipe (9) that the shore foot link up to the bank top is buried underground to the bank protection basis, check cage town foot (1), bank protection (4) and pedestrian passageway (5) are located drainage culvert pipe (9) top, drainage culvert pipe (9) both ends are provided with catch basin (10) and stilling basin (11) respectively, catch basin (10) are located and are close to bank protection basis bank top department, stilling basin (11) are located and are close to bank protection basis bank foot department.