US 12,582,101 B1Granted

Estuarine fisheries habitat restoration three-dimensional device and assessment method

OwnerSikai Wang, Feng Zhao +5inventors

InventorsSikai Wang, Feng Zhao, Tingting Zhang, Chao Song, Gang Yang, Guangpeng Feng, Junlin Ren

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Abstract

An estuarine fisheries habitat restoration three-dimensional device includes a plant floating bed region, a pipe reef region, a gabion mesh box region and a stainless steel frame structure. The estuarine fisheries can provide diversified habitats for different kinds of aquatic organisms by constructing a three-dimensional restoration device including the plant floating bed region, the pipe reef region, and the gabion mesh box region.

Claims2

Dependent claims

An estuarine fisheries habitat restoration three-dimensional device, comprising a plant floating bed region, a pipe reef region, a gabion mesh box region and a stainless steel frame structure;

wherein the plant floating bed region comprises:
a foam float, an angle iron, a screw hole in the angle iron for fixing a floating bed, a plant root system, and a polyethylene mesh;
wherein the pipe reef region comprises:
a stainless steel frame, a PVC pipe, a first nylon rope, a hole opened in the polyvinyl chloride (PVC) pipe;
wherein the gabion mesh box region comprises:
a stainless steel frame, a lead wire cage, a stone block;
wherein the plant floating bed region is located in an upper part of the stainless steel frame, and is composed of the foam float, the stainless steel tube frame and a floating bed plant module, the upper part of the stainless steel frame is welded into nine squares through the angle iron, and the floating bed plant module is placed in each square, the floating bed plant module is screwed to the stainless steel frame through the screw hole in the angle iron;
the floating bed plant module is composed of two layers of polyethylene meshes on a top and a bottom and the plant root system filled in a middle, and is fastened through a plastic ties;
an entire floating bed frame is nested in the stainless steel frame and is located in an uppermost part of the stainless steel frame, and is connected to the stainless steel frame through the nylon rope;
the foam float makes the floating bed with the tidal up and down, plant growth is configured to purify the water, a surface of the floating bed is configured to provide a resting place for birds, and the plant root system is configured to provide an attachment substrate for fish eggs and young fish;
a filling ratio of the plant root system in the floating bed plant module is determined by a formula:
P
=
V
r
V
m
×
100
⁢
%
where P is the filling ratio of the plant root system, Vr is a total volume of the plant root system, and Vm is a total volume of the floating bed plant module, and the total volume of the plant root system is determined by a product of multiplying an average volume of a single plant root system with an average volume of the plant root system in the floating bed plant module, and the total volume of the floating bed plant module is calculated based on a size of the floating bed plant module;
wherein the pipe reef region is located in a middle of the stainless steel frame and above the gabion mesh box region, 5 different pipe diameter specifications of the PVC pipes are placed on the upper part of the stainless steel frame in the 16 squares, and fixed to the stainless steel frame through the nylon rope;
the pipe reef region is configured to provide hiding and sheltering places for fish aquatic organisms, and a distribution density of holes on the PVC pipe is calculated based on a formula:
D
=
n
π
⁢
rL
,
where D is the distribution density of hole, n is a number of holes on a single PVC pipe, r is a radius of the PVC pipe, L is a length of the PVC pipe, and the number of holes on the single PVC pipe is set according to ecological function requirements of the PVC pipes with different pipe diameter specifications;
wherein the gabion mesh box region is provided at a very bottom of the stainless steel frame, with a lead wire cage to make an independent gabion mesh, wherein a weaving structure and a mesh size of the lead wire cage in the gabion mesh box are designed as follows:
the lead wire cage adopts a double-twisted hexagonal braided structure, which has a higher stability and strength, and a stranding angle α of a lead wire is determined according to a formula:
α
=
arctan
⁡
(
d
h
)
,
wherein d is a diameter of the lead wire, and h is a vertical distance between neighboring lead wires, and the stranding angle is optimized by adjusting the diameter of the lead wire and the vertical distance, and the mesh size is designed based on a body size of target benthic organisms, and a dynamic adaptive mesh size algorithm is adopted;
the body size data of common benthic organisms in the estuary are statistically analyzed to obtain a distribution range of the organisms, and based on a distribution of the body sizes of the organisms, the mesh sizes are divided into several grades, and each grade corresponds to a certain range of the organisms;
each gabion mesh is filled with different specifications of stone blocks, 16 gabion meshes are randomly placed into a lower part of the stainless steel frame of 16 small squares, a removable cross-bar is provided around the stainless steel frame, the gabion mesh box is configured to provide shrimp and crabs and various types of benthic organisms for suitable habitat, different specifications of the stone blocks are filled and layout in the gabion mesh box using layered random filling algorithm, the specific steps are as follows:
first, dividing the gabion mesh box into a number of equal volume of small cells, for each specification of the stone block, randomly selecting the small cells for filling, a filling ratio of different specifications of the stone blocks in the gabion mesh box is calculated according to a formula:
R
i
=
N
i
N
t
×
100
⁢
%
,
where Ri is a filling ratio of ith specification stone blocks, Ni is a number of the ith specification stone blocks, Nt is a total number of stone blocks in the gabion mesh box, the number of stone blocks is determined according to a volume of the gabion mesh box, specifications of the stone blocks, and a demand for biological habitat;
wherein a surface of the stone block comprises a biophilic coating, the coating material is made of a mixture of natural biological material and organic binder, the natural biological material comprises shell powder and coral powder, which are rich in calcium and magnesium;
wherein a preparation process of coating comprises mixing the natural biological material and the organic binder evenly according to a certain ratio, and the coating is uniformly covered on the stone block using a spraying or soaking method surface, a thickness of the coating is determined by a formula:
T
=
m
ρ
c
⁢
S
,
where T is the thickness of the coating, m is a mass of the coating per unit area, ρc is a density of the coating material, and S is a surface area of the stone block;
wherein the stainless steel frame structure is formed by welding stainless steel as a fixed device, a bottom of the stainless steel frame structure is welded with a steel plate as a base, to prevent falling into the sediment deposit, steel pipes are welded in at horizontal and vertical intervals in height of 0.25 m and 0.75 m to form 16 small squares, a surrounding of the entire stainless steel frame structure is connected to an anchor through the nylon rope, the device is fixed in an estuarine intertidal waters, a welding process of the stainless steel frame structure uses a staggered welding method, firstly, a horizontal steel pipe and a vertical steel pipe are spot-welded and fixed at each intersection, then starting from one corner of the stainless steel frame structure to be welded successively based on a specific order, and every time a section of the stainless steel frame structure is welded, an intersection is skipped, and then welding is continued, and a determination of a welding order is derived from an analysis of the force of the stainless steel frame structure under the impact of the water current and the action of wind and waves.

69 more elements

Dependencies are inferred from the claim text.

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Abstract

An estuarine fisheries habitat restoration three-dimensional device, comprising a plant floating bed region, a pipe reef region, a gabion mesh box region and a stainless steel frame structure;

wherein the plant floating bed region comprises:
a foam float, an angle iron, a screw hole in the angle iron for fixing a floating bed, a plant root system, and a polyethylene mesh;
wherein the pipe reef region comprises:
a stainless steel frame, a PVC pipe, a first nylon rope, a hole opened in the polyvinyl chloride (PVC) pipe;
wherein the gabion mesh box region comprises:
a stainless steel frame, a lead wire cage, a stone block;
wherein the plant floating bed region is located in an upper part of the stainless steel frame, and is composed of the foam float, the stainless steel tube frame and a floating bed plant module, the upper part of the stainless steel frame is welded into nine squares through the angle iron, and the floating bed plant module is placed in each square, the floating bed plant module is screwed to the stainless steel frame through the screw hole in the angle iron;
the floating bed plant module is composed of two layers of polyethylene meshes on a top and a bottom and the plant root system filled in a middle, and is fastened through a plastic ties;
an entire floating bed frame is nested in the stainless steel frame and is located in an uppermost part of the stainless steel frame, and is connected to the stainless steel frame through the nylon rope;
the foam float makes the floating bed with the tidal up and down, plant growth is configured to purify the water, a surface of the floating bed is configured to provide a resting place for birds, and the plant root system is configured to provide an attachment substrate for fish eggs and young fish;
a filling ratio of the plant root system in the floating bed plant module is determined by a formula:
P
=
V
r
V
m
×
100
⁢
%
where P is the filling ratio of the plant root system, Vr is a total volume of the plant root system, and Vm is a total volume of the floating bed plant module, and the total volume of the plant root system is determined by a product of multiplying an average volume of a single plant root system with an average volume of the plant root system in the floating bed plant module, and the total volume of the floating bed plant module is calculated based on a size of the floating bed plant module;
wherein the pipe reef region is located in a middle of the stainless steel frame and above the gabion mesh box region, 5 different pipe diameter specifications of the PVC pipes are placed on the upper part of the stainless steel frame in the 16 squares, and fixed to the stainless steel frame through the nylon rope;
the pipe reef region is configured to provide hiding and sheltering places for fish aquatic organisms, and a distribution density of holes on the PVC pipe is calculated based on a formula:
D
=
n
π
⁢
rL
,
where D is the distribution density of hole, n is a number of holes on a single PVC pipe, r is a radius of the PVC pipe, L is a length of the PVC pipe, and the number of holes on the single PVC pipe is set according to ecological function requirements of the PVC pipes with different pipe diameter specifications;
wherein the gabion mesh box region is provided at a very bottom of the stainless steel frame, with a lead wire cage to make an independent gabion mesh, wherein a weaving structure and a mesh size of the lead wire cage in the gabion mesh box are designed as follows:
the lead wire cage adopts a double-twisted hexagonal braided structure, which has a higher stability and strength, and a stranding angle α of a lead wire is determined according to a formula:
α
=
arctan
⁡
(
d
h
)
,
wherein d is a diameter of the lead wire, and h is a vertical distance between neighboring lead wires, and the stranding angle is optimized by adjusting the diameter of the lead wire and the vertical distance, and the mesh size is designed based on a body size of target benthic organisms, and a dynamic adaptive mesh size algorithm is adopted;
the body size data of common benthic organisms in the estuary are statistically analyzed to obtain a distribution range of the organisms, and based on a distribution of the body sizes of the organisms, the mesh sizes are divided into several grades, and each grade corresponds to a certain range of the organisms;
each gabion mesh is filled with different specifications of stone blocks, 16 gabion meshes are randomly placed into a lower part of the stainless steel frame of 16 small squares, a removable cross-bar is provided around the stainless steel frame, the gabion mesh box is configured to provide shrimp and crabs and various types of benthic organisms for suitable habitat, different specifications of the stone blocks are filled and layout in the gabion mesh box using layered random filling algorithm, the specific steps are as follows:
first, dividing the gabion mesh box into a number of equal volume of small cells, for each specification of the stone block, randomly selecting the small cells for filling, a filling ratio of different specifications of the stone blocks in the gabion mesh box is calculated according to a formula:
R
i
=
N
i
N
t
×
100
⁢
%
,
where Ri is a filling ratio of ith specification stone blocks, Ni is a number of the ith specification stone blocks, Nt is a total number of stone blocks in the gabion mesh box, the number of stone blocks is determined according to a volume of the gabion mesh box, specifications of the stone blocks, and a demand for biological habitat;
wherein a surface of the stone block comprises a biophilic coating, the coating material is made of a mixture of natural biological material and organic binder, the natural biological material comprises shell powder and coral powder, which are rich in calcium and magnesium;
wherein a preparation process of coating comprises mixing the natural biological material and the organic binder evenly according to a certain ratio, and the coating is uniformly covered on the stone block using a spraying or soaking method surface, a thickness of the coating is determined by a formula:
T
=
m
ρ
c
⁢
S
,
where T is the thickness of the coating, m is a mass of the coating per unit area, ρc is a density of the coating material, and S is a surface area of the stone block;
wherein the stainless steel frame structure is formed by welding stainless steel as a fixed device, a bottom of the stainless steel frame structure is welded with a steel plate as a base, to prevent falling into the sediment deposit, steel pipes are welded in at horizontal and vertical intervals in height of 0.25 m and 0.75 m to form 16 small squares, a surrounding of the entire stainless steel frame structure is connected to an anchor through the nylon rope, the device is fixed in an estuarine intertidal waters, a welding process of the stainless steel frame structure uses a staggered welding method, firstly, a horizontal steel pipe and a vertical steel pipe are spot-welded and fixed at each intersection, then starting from one corner of the stainless steel frame structure to be welded successively based on a specific order, and every time a section of the stainless steel frame structure is welded, an intersection is skipped, and then welding is continued, and a determination of a welding order is derived from an analysis of the force of the stainless steel frame structure under the impact of the water current and the action of wind and waves.

69 more elements