A rapidly assembled artificial ecological island suitable for medium-sized open waters and a construction method thereof

Abstract

The invention provides an artificial ecological island suitable for medium-sized open waters and capable of being assembled quickly and a construction method thereof. The tail end of a steel cylinder assembly is inserted into an underwater riverbed, a reinforced concrete cylinder is installed on the steel cylinder assembly, a steel cylinder filler is filled inside the steel cylinder assembly, a water-impermeable non-woven fabric for preventing the steel cylinder filler from being washed away is covered on the top of the steel cylinder filler, a hollow section is provided in the middle of the reinforced concrete cylinder, a reinforcing rib for reinforcing the hollow section is provided on the hollow section, two pieces of stone, block stone, crushed stone, water-permeable geosynthetics, medium-coarse sand and cultivated soil are sequentially filled in the reinforced concrete cylinder from bottom to top, and the block stone section and the crushed stone section are located in the hollow section. The ecological island can provide a medium for water purification in the water area, break through the height limit of the inland waterway, avoid the use of large-scale lifting equipment, and quickly and safely construct an artificial ecological island.

Description

Technical Field

[0001] The invention relates to the technical field of water environment ecological management, and more specifically to a rapidly assembled artificial ecological island suitable for medium-sized open waters and a construction method thereof. Background Art

[0002] After being polluted, the water body has poor self-purification ability, which can easily lead to eutrophication, hypoxia and black and smelly water. As my country's economy enters a stage of high-quality development, water environment governance has received more and more attention from the society.

[0003] Artificial ecological islands can provide suitable growth conditions for a variety of aquatic plants and improve the water's own purification capacity. Traditional artificial islands use sand, gravel and soil as the base, and require large-scale construction equipment. The construction process is complicated and inconvenient to construct in inland rivers. Small floating ecological islands are mostly used in small and medium-sized urban rivers. Due to the limited coverage area of ​​floating islands in the water, their purification efficiency in open waters is low and they are not suitable for open waters. Summary of the invention

[0004] The present invention overcomes the shortcomings of the prior art. The existing artificial island construction process is complicated and construction inconvenient in inland rivers. The coverage area of ​​small floating ecological islands in the water area is limited, and the purification efficiency in open waters is low. The present invention provides an artificial ecological island that can be quickly assembled and is suitable for medium-sized open waters, and a construction method thereof. The ecological island can provide a medium for water purification in the water area, break through the height limit of inland waterways, avoid the use of large lifting equipment, and quickly and safely construct an artificial ecological island.

[0005] The purpose of the present invention is achieved through the following technical solutions.

[0006] A rapidly assembled artificial ecological island suitable for medium-sized open waters, comprising reinforced concrete cylinders and steel cylinder components for resisting corrosion in the atmosphere zone, splash zone and water level fluctuation zone.

[0007] The tail end of the steel cylinder assembly is inserted into the underwater riverbed, the reinforced concrete cylinder is installed on the steel cylinder assembly, the interior of the steel cylinder assembly is filled with steel cylinder filler, the top of the steel cylinder filler is covered with a water-impermeable non-woven fabric for preventing the steel cylinder filler from being washed away, a hollow section is opened in the middle of the reinforced concrete cylinder, and reinforcing ribs for strengthening the strength of the hollow section are arranged on the hollow section. The reinforced concrete cylinder is filled with two pieces of stone, block stone, crushed stone, permeable geosynthetics, medium-coarse sand and cultivated soil from bottom to top, and the block stone section and the crushed stone section are located in the hollow section.

[0008] A steel cap is installed at the head end of the steel cylinder assembly at the top, and a steel cap groove is opened at the tail end of the reinforced concrete cylinder. The steel cap groove cooperates with the steel cap to connect the reinforced concrete cylinder and the steel cylinder assembly.

[0009] The width of the steel cap groove is 3-5 cm larger than the width of the steel cap.

[0010] The number of steel cylinders in the steel cylinder assembly is 2-6 to meet the requirements of different water depths. Bolt holes are opened on the inner side of the steel cylinders, and stiffening ribs for increasing rigidity are vertically arranged in the bolt holes. Adjacent steel cylinders are connected by connecting bolts.

[0011] An anti-corrosion coating is coated on the outer wall of the steel cylinder, and a sacrificial anode protection block is installed on the outer wall of the steel cylinder at the bottom end.

[0012] Waterproof mortar for preventing sand and water is poured into the connecting gaps between adjacent steel cylinders.

[0013] The height of the steel cylinder is 3-4m, the diameter of the steel cylinder is 5-20m, and the wall thickness of the steel cylinder is 15-25mm.

[0014] The steel cylinder filler is medium-coarse sand or river bottom dredged silt.

[0015] The height of the reinforced concrete cylinder is 3-4m, the diameter of the reinforced concrete cylinder is 5-20m, and the wall thickness of the reinforced concrete cylinder is 15-25mm.

[0016] The two pieces of stone are filled to the bottom of the hollow section, the blocks of stone and the crushed stones are filled into the hollow section from bottom to top, and the top of the crushed stones is flush with the top of the hollow section.

[0017] Aquatic plants are planted on the cultivated soil.

[0018] A construction method for a rapidly assembled artificial ecological island suitable for medium-sized open waters is carried out in the following steps:

[0019] Step 1, transport the steel cylinder assembly and the reinforced concrete cylinder to the shore of the lake by land transportation, and transfer them to the ship by using a ship-mounted crane;

[0020] Step 2: accurately locate the lowering position of the steel cylinder assembly, clamp the steel cylinder assembly with an APE400 vibrating hammer and vibrate it to the designed elevation, then lift another steel cylinder assembly and sink it to the top of the fixed steel cylinder assembly, tighten and fix the adjacent steel cylinder assemblies with connecting bolts, pour waterproof mortar into the connecting gaps between the adjacent steel cylinder assemblies, and then install a steel cap on the top of the steel cylinder assembly at the top;

[0021] Step 3, lifting the reinforced concrete cylinder, and lowering it to the top position of the steel cylinder assembly after accurate positioning;

[0022] Step 4, backfilling the steel cylinder assembly with dredged silt or medium-coarse sand from the lake to the steel cap, and then laying a water-impermeable non-woven fabric on the top;

[0023] Step 5, continue to fill the reinforced concrete cylinder above the impermeable non-woven fabric from bottom to top with two pieces of stone, blocks, crushed stone, permeable geosynthetics, medium-coarse sand and cultivated soil, among which the elevation of the top of the two pieces of stone is flush with the bottom of the hollow section, and the elevation of the top of the crushed stone is flush with the top of the hollow section. After the artificial ecological island is built, aquatic plants are planted on the cultivated soil.

[0024] The beneficial effects of the present invention are as follows: in view of the shortcomings of the existing artificial ecological island construction technology, the ecological island can provide a medium for water purification in the water area, break through the height limit of the inland waterway, avoid the use of large-scale lifting equipment, and quickly and safely construct the artificial ecological island.

[0025] The bottom of the artificial ecological island of the present invention adopts a steel cylinder, which is easy to construct. It is driven into the underwater foundation through vibration sinking, and dredged silt or medium-coarse sand is filled inside the steel cylinder to the steel cap. Impermeable non-woven fabric is laid on the top, so as to quickly build a stable bottom support structure.

[0026] The present invention adopts a structure combining a multi-section bottom steel cylinder + an upper reinforced concrete prefabricated cylinder. The connection between the bottom steel cylinder and the upper reinforced concrete cylinder is convenient and stable, and compared with the complete use of an integral steel cylinder, the manufacturing and transportation costs can be reduced. The structure combining the bottom steel cylinder + the upper reinforced concrete prefabricated cylinder of the present invention can realize rapid construction of the bottom support through the steel cylinder, prefabricate a hollow section structure through the upper reinforced concrete cylinder, and fill the cylinder with multiple layers of fillers such as two-piece stone, block stone, crushed stone, permeable geosynthetics, medium-coarse sand and cultivated soil, thereby realizing effective interaction between green plants and the water body around the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the connection structure of the first steel cylinder and the second steel cylinder in the present invention;

[0029] Figure 3 It is a schematic diagram of the connection structure between the steel cap and the steel cap groove in the present invention;

[0030] Figure 4 It is a schematic diagram of the connection structure between the first steel cylinder and the reinforced concrete cylinder in the present invention;

[0031] Figure 5 It is a schematic diagram of filling the inner filler of the reinforced concrete cylinder in the present invention;

[0032] In the figure: 1 is a reinforced concrete cylinder, 2 is a first steel cylinder, 3 is a sacrificial anode protection block, 4 is a hollow section, 5 is a second steel cylinder, 1-1 is two pieces of stone, 1-2 is a block of stone, 1-3 is crushed stone, 1-4 is a permeable geosynthetics, 1-5 is medium-coarse sand, 1-6 is cultivated soil, 1-7 is an aquatic plant, 2-1 is a connecting bolt, 2-2 is a steel cap, and 2-3 is an impermeable non-woven fabric.

[0033] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described below through specific embodiments.

[0035] Embodiment 1

[0036] Take the case where there are 2 steel cylinders in the steel cylinder assembly as an example:

[0037] A rapidly assembled artificial ecological island suitable for medium-sized open waters comprises a reinforced concrete cylinder 1 and a steel cylinder assembly for resisting corrosion in an atmospheric zone, a splash zone and a water level fluctuation zone.

[0038] The steel cylinder assembly includes a first steel cylinder 2 and a second steel cylinder 5, the tail end of the second steel cylinder 5 is inserted into the bottom of the water, the head end of the second steel cylinder 5 is connected to the tail end of the first steel cylinder 2 through a connecting assembly, the first steel cylinder 2 and the second steel cylinder 5 are filled with steel cylinder fillers, a steel cap 2-2 is installed at the head end of the first steel cylinder 2, and a steel cap groove is opened at the tail end of the reinforced concrete cylinder 1, and the steel cap groove cooperates with the steel cap 2-2 to connect the reinforced concrete cylinder 1 and the first steel cylinder 2;

[0039] A hollow section 4 is opened in the middle of the reinforced concrete cylinder 1, and the top of the steel cylinder filler is covered with an impermeable non-woven fabric 2-3 for preventing the steel cylinder filler from being washed away. The reinforced concrete cylinder 1 is filled with two pieces of stone 1-1, block stone 1-2, crushed stone 1-3, permeable geosynthetics 1-4, medium-coarse sand 1-5 and cultivated soil 1-6 from bottom to top. The block stone section and the crushed stone section are located in the hollow section 4, which is convenient for water exchange between the reinforced concrete cylinder 1 and the water area.

[0040] Embodiment 2

[0041] On the basis of Example 1, bolt holes are opened at the rear end of the first steel cylinder 2 and the inner side of the front end of the second steel cylinder 5, and stiffening ribs for increasing rigidity are vertically arranged in the bolt holes. The connecting assembly connects the first steel cylinder 2 and the second steel cylinder 5 through the bolt holes, and the connecting assembly adopts connecting bolts 2-1.

[0042] Waterproof mortar for preventing sand and stopping water is poured into the connection gap between the tail end of the first steel cylinder 2 and the head end of the second steel cylinder 5 .

[0043] The heights of the first steel cylinder 2 and the second steel cylinder 5 are both 3-4 m, the diameters of the first steel cylinder 2 and the second steel cylinder 5 are both 5-20 m, and the wall thicknesses of the first steel cylinder 2 and the second steel cylinder 5 are both 15-25 mm.

[0044] The width of the steel cap groove is 3-5cm larger than the width of the steel cap 2-2.

[0045] The steel cylinder filler is made of medium-coarse sand or dredged silt from the river bottom.

[0046] An anti-corrosion coating is coated on the outer walls of the first steel cylinder 2 and the second steel cylinder 5 , and a sacrificial anode protection block 3 is arranged on the outer wall of the second steel cylinder 5 .

[0047] Embodiment 3

[0048] On the basis of the second embodiment, the reinforced concrete cylinder 1 adopts a reinforced concrete cylinder structure, the height of the reinforced concrete cylinder 1 is 3-4m, the diameter of the reinforced concrete cylinder 1 is 5-20m, and the wall thickness of the reinforced concrete cylinder 1 is 15-25mm.

[0049] The two pieces of stone 1 - 1 are filled to the bottom of the hollow section 4 , and the block stone 1 - 2 and the crushed stone 1 - 3 are filled into the hollow section 4 from bottom to top, and the top of the crushed stone 1 - 3 is flush with the top of the hollow section 4 .

[0050] Aquatic plants 1-7 are planted on the cultivated soil 1-6.

[0051] Embodiment 4

[0052] The water depth of the installed lake is 8-10m, the top surface of the artificial ecological island is 5cm below the normal water level, and the diameters of the first steel cylinder, the second steel cylinder and the reinforced concrete cylinder are 5-20m and the height is 3-4m.

[0053] Step 1, transporting the first steel cylinder, the second steel cylinder and the reinforced concrete cylinder to the shore of the lake by land transportation, and transferring them to the ship by using a ship-borne crane;

[0054] Step 2: accurately locate the lowering position of the second steel cylinder, clamp the second steel cylinder with an APE400 vibrating hammer and vibrate it to the designed elevation, then lift the first steel cylinder and sink it to the top of the second steel cylinder, tighten and fix the first steel cylinder and the second steel cylinder with connecting bolts, pour waterproof mortar into the connecting gap between the first steel cylinder and the second steel cylinder, and then install a steel cap on the top of the first steel cylinder;

[0055] Step 3, lifting the reinforced concrete cylinder, and lowering it to the top position of the first steel cylinder after accurate positioning;

[0056] Step 4, backfilling the dredged silt or medium-coarse sand in the lake into the first steel cylinder and the second steel cylinder to the steel cap, and then laying a water-impermeable non-woven fabric on the upper part thereof;

[0057] Step 5, continue to fill the reinforced concrete cylinder above the impermeable non-woven fabric from bottom to top with two pieces of stone, blocks, crushed stone, permeable geosynthetics, medium-coarse sand and cultivated soil in sequence, among which the elevation of the top of the two pieces of stone is flush with the bottom of the hollow section, and the elevation of the top of the crushed stone is flush with the top of the hollow section. After the artificial ecological island is built, aquatic plants such as reeds, cannas, etc. are planted on the cultivated soil.

[0058] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0059] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0060] The present invention is described in detail above, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A rapidly assembled artificial ecological island suitable for medium-sized open waters, characterized by: It includes reinforced concrete cylinders and steel cylinder assemblies designed to resist corrosion in the atmospheric, splash and water level fluctuation zones. The tail end of the steel cylinder assembly is inserted into the underwater riverbed, the reinforced concrete cylinder is installed on the steel cylinder assembly, the steel cylinder filler is filled inside the steel cylinder assembly, the top of the steel cylinder filler is covered with a water-impermeable non-woven fabric for preventing the steel cylinder filler from being washed away, a hollow section is opened in the middle of the reinforced concrete cylinder, and reinforcing ribs for strengthening the strength of the hollow section are arranged on the hollow section. Two pieces of stone, block stone, crushed stone, permeable geosynthetics, medium-coarse sand and cultivated soil are filled in the reinforced concrete cylinder from bottom to top in sequence, and the block stone section and the crushed stone section are located in the hollow section; A steel cap is installed at the head end of the steel cylinder assembly at the top, and a steel cap groove is opened at the tail end of the reinforced concrete cylinder. The steel cap groove cooperates with the steel cap to connect the reinforced concrete cylinder and the steel cylinder assembly; The number of steel cylinders in the steel cylinder assembly is 2-6 to meet the requirements of different water depths. Bolt holes are opened on the inner side of the steel cylinders, and stiffening ribs for increasing rigidity are vertically arranged in the bolt holes. Adjacent steel cylinders are connected by connecting bolts. Wherein, an anti-corrosion coating is coated on the outer wall of the steel cylinder, and a sacrificial anode protection block is installed on the outer wall of the steel cylinder located at the bottom; Waterproof mortar for sand and water prevention is poured into the connection gaps between adjacent steel cylinders. The height of the steel cylinders is 3-4m, the diameter of the steel cylinders is 5-20m, and the wall thickness of the steel cylinders is 15-25mm; The steel cylinder filler is medium-coarse sand or river bottom dredged silt.

2. The artificial ecological island suitable for medium-sized open waters and capable of rapid assembly according to claim 1, characterized in that: The width of the steel cap groove is 3-5 cm larger than the width of the steel cap.

3. The artificial ecological island suitable for medium-sized open waters and capable of rapid assembly according to claim 1, characterized in that: The height of the reinforced concrete cylinder is 3-4m, the diameter of the reinforced concrete cylinder is 5-20m, and the wall thickness of the reinforced concrete cylinder is 15-25mm.

4. The artificial ecological island suitable for medium-sized open waters and capable of rapid assembly according to claim 1, characterized in that: The two pieces of stone are filled to the bottom of the hollow section, the blocks of stone and the crushed stones are filled into the hollow section from bottom to top, and the top of the crushed stones is flush with the top of the hollow section.

5. A construction method for a rapidly assembled artificial ecological island suitable for medium-sized open waters as claimed in any one of claims 1 to 4, characterized in that: Follow the steps below: Step 1, transport the steel cylinder assembly and the reinforced concrete cylinder to the shore of the lake by land transportation, and transfer them to the ship by using a ship-mounted crane; Step 2: accurately locate the lowering position of the steel cylinder assembly, clamp the steel cylinder assembly with an APE400 vibrating hammer and vibrate it to the designed elevation, then lift another steel cylinder assembly and sink it to the top of the fixed steel cylinder assembly, tighten and fix the adjacent steel cylinder assemblies with connecting bolts, pour waterproof mortar into the connecting gaps between the adjacent steel cylinder assemblies, and then install a steel cap on the top of the steel cylinder assembly at the top; Step 3, lifting the reinforced concrete cylinder, and lowering it to the top position of the steel cylinder assembly after accurate positioning; Step 4, backfilling the steel cylinder assembly with dredged silt or medium-coarse sand from the lake to the steel cap, and then laying a water-impermeable non-woven fabric on the top; Step 5, continue to fill the reinforced concrete cylinder above the impermeable non-woven fabric from bottom to top with two pieces of stone, blocks, crushed stone, permeable geosynthetics, medium-coarse sand and cultivated soil, among which the elevation of the top of the two pieces of stone is flush with the bottom of the hollow section, and the elevation of the top of the crushed stone is flush with the top of the hollow section. After the artificial ecological island is built, aquatic plants are planted on the cultivated soil.

Images