2226results about "Coastlines protection" patented technology

The present invention relates to the technical field of water conservancy construction. Disclosed is an ecological restoration revetment structure, which is applied to a slope surface. The ecological restoration revetment structure comprises: a laying net which is laid from the top to the bottom of a slope, wherein a plurality of planting holes are provided in the surface of the laying net; and a plurality of frame blocks, all of which are detachably connected to the surface of the laying net, wherein each frame block has a limiting hole, and the limiting hole in each frame block corresponds to a set number of planting holes. By means of the cooperation of the laying net, inserting portions and blocking portions, the present invention can perform slope reinforcement and water flow blocking operations on a slope surface, thereby reducing the influence of water flow scouring on the slope surface. Specifically, the laying net is directly laid from the top to the bottom of a slope, and the frame blocks are then mounted on the laying net. When the frame blocks are mounted, the inserting portions are guided to be inserted into the slope, and the blocking portions then block and converge water spreading from the edges of the ends of the frame blocks away from the bottom of the slope, and guide the water to the surface of the laying net on two sides of each frame block. Figure accompanying the abstract

The invention relates to the technical field of river bank protection, in particular to a river bank slope protection for cofferdam construction and a construction method thereof. S2, construction of a near-water area structure; s3, construction of a far water area structure; s4, ecological enhancement; triple optimization of river bank protection is achieved through dynamic water level monitoring and modular design, a double-layer reinforced concrete and elastic sealant structure is adopted in a near-water area, the compressive strength is improved by 20%, the crack width is smaller than or equal to 0.2 mm, and material waste is reduced by 15% in cooperation with dynamic width adjustment (+ / -2 m); the mold bag concrete slope protection is combined with an atomization spraying system, the anti-scouring capacity reaches 5 m / (m.s), the vegetation coverage rate is larger than or equal to 80% within 3 months, and the water and soil loss rate is reduced by 70%; the modular honeycomb structure inflation assembly efficiency is improved by 40%, the transportation cost is reduced by 50%, the distributed sensors achieve structure displacement / pressure three-level early warning, the operation and maintenance cost is reduced by 70%, the overall service life is prolonged by more than 5 years, and an ecological-engineering collaborative protection system is formed.

The invention discloses a backwater side seepage drainage and pressure reduction anti-seepage method based on a built sandy soil embankment foundation, and relates to the field of hydraulic engineering embankment seepage control. The technical problems that in existing sandy soil embankment foundation seepage drainage design, due to dynamic change of soil layer permeability, the drainage effect is poor, and slope stability is difficult to guarantee are solved. The method comprises the following steps: establishing a seepage field model through a three-stage hydraulic fracture test, and measuring a permeability coefficient, critical pressure and a failure criterion; the groove is dynamically excavated in three stages, the excavation depth and the slope gradient are corrected in real time according to actually measured data, and the shape of the groove is verified through a model; and finally, laying an inverted filter layer, a drainage body and an anti-scouring layer, wherein the permeability coefficient of the inverted filter layer and the aperture ratio of the drainage body are dynamically adjusted according to actually measured data. According to the method, accurate control over seepage drainage and pressure reduction of the sandy soil embankment foundation is achieved through dynamic coupling of testing, construction and a numerical model, and the method is mainly used for seepage treatment of the backwater side of a built embankment and slope stabilization and reinforcement.

The invention provides a method for repairing and maintaining an ecological bank protection structure of a water conservancy project. Comprising the following steps: S1, screening and domesticating functional microorganisms; S2, constructing a vegetation and microorganism synergistic remediation unit; S3, precisely arranging the synergistic remediation unit on site; S4, dynamically monitoring and coordinately regulating and controlling: screening and domesticating the functional microorganisms, constructing the synergistic remediation unit, precisely arranging the synergistic remediation unit on site, and dynamically monitoring and regulating and controlling. A microorganism-vegetation-carrier synergistic effect mechanism is formed, so that the technical problems of structural stability and ecological function separation in traditional revetment restoration are solved; the method has the advantages that the synergistic interaction of structure stability and ecological restoration is realized, the self-repairing capability of a microorganism-vegetation symbiotic system is improved, a multi-dimensional dynamic monitoring regulation and control mechanism is established, and the manual maintenance cost is reduced.

The embodiment of the invention provides a full-life-cycle slope protection net system which comprises an active protection net system (1), the active protection net system (1) comprises a plurality of fiber grating sensors (14), and the fiber grating sensors (14) are arranged on a first net body (11). The strain information acquisition module is used for acquiring strain information of a first anchor rod (13) and / or strain information of an anchor buckle according to deformation of the first net body (11) and converting the strain information into a first electric signal or a first optical signal; the fiber grating sensor (14) is electrically connected to an edge computing node near the active protective net system (1); and the edge computing node is electrically connected to the cloud platform through the wireless sensor (3). The local stress and deformation information of the protective net can be accurately obtained in real time, and accurate data support is provided for subsequent early warning and regulation.

The invention discloses a permeable hinged type ecological slope protection structure for sheltering benthonic animals in a canal. The permeable hinged type ecological slope protection structure is formed by distributing a plurality of slope protection blocks on a bank slope in an array mode. The slope protection block body is of an integrated structure and comprises an upper halfpace section and a lower rectangular enclosure frame section. An inner cavity of the slope protection block body is formed by a space enclosed by the lower rectangular enclosure frame section and a halfpace-shaped cavity in the upper halfpace section; lateral channels communicating with the inner cavity are formed in the left side and the right side of the slope protection block body, and the lateral channels on the two sides directly face each other. Through holes communicated with the inner cavity are formed in the top surface, the front side surface and the rear side surface of the upper halfpace section; the front side and the rear side of the lower rectangular enclosure frame section are respectively provided with a linkage hinge bayonet and a linkage hinge clamping block which are matched with each other; an induction adhesion layer is arranged on the top surface of the upper halfpace section; in the shoreline direction, the lateral channels of the adjacent slope protection block bodies are aligned and communicated; the adjacent slope protection blocks are clamped and matched in the direction perpendicular to the shoreline. According to the method, a relatively stable near-bottom shielding and slow-flow sheltering space can be formed, and habitat communication and attachment induction interface construction are considered.

The invention discloses an ecological brick and a preparation method thereof, and belongs to the technical field of ecological building materials. The ecological brick adopts a layered composite structure design, and comprises an outer anti-scouring protective layer, a middle buffer energy-absorbing layer and an inner ecological functional layer which are sequentially arranged from outside to inside, and diversion trenches with the width of 2mm and the depth of 1.5 mm are formed among micro-bulges to form latticed distribution. The preparation method comprises the four key steps of material pretreatment, layered pouring, bionic forming and intelligent maintenance. In the material pretreatment stage, Yellow River fine sand is screened and cleaned, straw fibers are soaked and modified through a sodium hydroxide solution, and basalt fibers are subjected to surface treatment through a silane coupling agent. And the layered pouring adopts a three-cavity mold system to realize accurate layer thickness control. Through the innovative structural design and preparation process, the anti-scouring performance and ecological function of the ecological brick are remarkably improved, compared with a traditional slope protection brick, the scouring loss is reduced by 42%, the plant survival rate reaches 89%, and an advanced technical solution is provided for water and soil conservation and ecological restoration engineering.

The invention discloses a permeable laminated grid ecological bank protection material suitable for improvement of a dredged soil green material and a preparation method of the permeable laminated grid ecological bank protection material. The preparation method comprises the following steps that S1, a dredged soil green improver and dredged soil are evenly mixed in a dry mode, and homogeneous slurry is formed after stirring; s2, injecting the homogenized slurry into a mold, and pressing the homogenized slurry into hollow laminated grid units through a hydraulic forming machine; and S3, the permeable laminated grid units are naturally cured, and the permeable laminated grid ecological bank protection material suitable for improvement of the dredged soil green materials is formed. According to the invention, the dredged soil is taken as a matrix, and the mechanical property and ecological compatibility of the dredged soil are remarkably improved by adding the composite modifier composed of 11 components such as the steel slag micro powder, the red mud activator, the calcium sulphoaluminate expanding agent and the active magnesium oxide and combining the design of the three-layer permeable laminated grid structure.

The invention discloses a drainage and prevention combined type embankment structure and a construction method, and belongs to the technical field of water conservancy projects. The embankment structure comprises a base and a protection structure arranged on the base in a coherent mode, the protection structure is composed of main pipe piles and arc-shaped sheet piles which are arranged at intervals, and an embankment is divided into a backwater side and a waterside. Side edge and top consolidation bodies are formed at the bottoms of the main pipe piles through grouting of the auxiliary pipe piles and the miniature pipes so as to enhance bearing; the arc-shaped sheet piles are tightly connected with the main pipe piles through the connecting end plates, the cap beams, the locking opening pipes and the connecting bolts, and a sealing anti-seepage system is formed on the backwater side. Meanwhile, a water collecting and draining system is arranged in the main pipe pile, and water on the water facing side is allowed to be drained orderly through the water collecting holes, the graded gravel materials, the water collecting pipe and the drainage blind pipe. Through combination of'prevention 'and'drainage', the anti-seepage safety of the backwater side is ensured, seepage water is timely dredged to eliminate seepage pressure, damage to the structure caused by water pressure accumulation is avoided, and unification of stability and safety of the embankment structure is achieved.

The invention discloses a high-toughness wetland ecological grid structure and a restoration system thereof. The grid structure comprises a plurality of rows of slope fixing grids which extend longitudinally and are arranged at intervals, and the slope fixing grids in the adjacent rows are arranged in a staggered mode; interval zones between the adjacent slope fixing grids form planting base bands which are communicated with each other. The slope fixing grids and the planting base band are made of artificial substrates of a multi-level pore structure, and a plurality of longitudinally-extending artificial waterways are arranged in the planting base band. The staggered ecological grid structure is matched with the wave-shaped artificial waterway to enhance the overall stability and anti-interference capability of the wetland, and the artificial matrix with the multi-level pore structure improves the water retention, filtration and adsorption effects and enhances the hydraulic connectivity of the matrix. According to the remediation system, a grid structure is divided into four planting belts, the remediation system of an arbor-shrub-grass-hygrophilous four-layer three-dimensional community is formed, a functional microorganism-plant combined remediation mechanism is achieved in cooperation with microbial flora, and the remediation adjusting capacity and stability of the wetland are improved.

The application discloses a cast-in-situ concrete slope protection plate construction process, which comprises the following steps: measuring and lofting, determining the total construction range of the cast-in-situ concrete slope protection plate; extending and excavating a groove downward along the slope surface at the slope foot of the total construction range of the cast-in-situ concrete slope protection plate; leveling and tamping the slope surface in the total construction range of the cast-in-situ concrete slope protection plate; dividing the construction range of each cast-in-situ concrete slope protection plate on the slope surface; supporting the formwork of the cast-in-situ concrete slope protection plate on the slope surface; fixing the pre-bundled steel mesh of the cast-in-situ concrete slope protection plate, pouring concrete, ironing the concrete surface, and removing the formwork; supporting the formwork of the cast-in-situ concrete slope protection plate of the later-poured cast-in-situ concrete slope protection plate beside the previously-poured cast-in-situ concrete slope protection plate; fixing the steel mesh, pouring concrete, ironing the concrete surface, and removing the formwork. The application can avoid the seepage and overflow of concrete slurry along the bottom of the U-shaped structure formed by the formwork of the cast-in-situ concrete slope protection plate, reduces the waste of concrete, and facilitates the ironing of the concrete surface.

The invention discloses an ecological bank protection intelligent irrigation control system and method based on multi-source data fusion, and relates to the field of irrigation control. Soil moisture content data is collected in real time, meteorological and vegetation growth information is combined, an irrigation strategy is dynamically adjusted through a prediction model, and accurate matching of vegetation water demand and water supply is ensured; meanwhile, sonar echoes are used for constructing underwater digital twin bodies, the state of a fish nest channel is monitored in real time through image recognition, when blockage is detected, the system immediately triggers a cleaning mechanism and synchronously optimizes an irrigation threshold value, and it is avoided that vegetation irrigation is affected due to the fact that water quality is affected by blockage; in the cleaning process, the main operation machine efficiently dredges the channel through rotary cleaning and water flow scouring, and the cleaning effect is verified in real time by means of digital twin bodies; in addition, the system further guarantees the irrigation continuity by presetting the cleaning time limit and a standby water source switching mechanism, effectively prevents the risk of bank slope instability, and remarkably improves the durability and ecological stability of the bank protection structure.

The present invention relates to a six-point truss-type sand pumping and lifting device for a mattress laying vessel. The device comprises a support assembly and six working assemblies. The six working assemblies are all slidably connected to the support assembly. Each working assembly comprises a moving assembly, a sand pumping assembly, and a lifting assembly. The sand pumping assembly and the lifting assembly are both connected to the moving assembly, and thus move and work by means of the moving assembly. The support assembly comprises two main beams. Two ends of each main beam are respectively connected to one main frame support leg. Two auxiliary beams are connected between every left and right main frame support legs. The moving assembly is slidably connected to the two main beams. Each auxiliary beam is connected to a hydraulic pump station, a frequency converter cabinet, and a cab. The present invention minimizes the labor intensity of operators and labor costs, and can effectively improve medium precision control, safety performance, and construction efficiency in the construction process.

The invention belongs to the technical field of water conservancy projects and pumped storage projects, and discloses a layered injection construction method of a micro-stress ECC parting-free hydraulic anti-seepage panel. Aiming at anti-cracking and anti-seepage challenges of a large-scale seamless hydraulic panel, micro-stress high-ductility injection ECC is injected for multiple times in the thickness direction of the micro-stress ECC parting-free hydraulic panel to form a multi-layer composite integral panel, and transverse and longitudinal joints are not arranged; construction cold joints existing in each spraying layer are covered by the subsequent spraying layers, and the construction cold joints of the adjacent spraying layers do not coincide; and the integral micro-stress ECC joint-free hydraulic panel structure is formed by staggering and overlapping. And by means of the crack control design of staggered joint lap joint and twisting-capturing of the ECC layer face, cooperative improvement of structural bearing and crack resistance and seepage resistance is achieved. Compared with a traditional steel-concrete panel and a traditional asphalt concrete panel, the concrete panel has the advantages of being rigid and flexible, high in construction speed, economical, practical, high in deformation adaptability, resistant to void, resistant to freezing, durable and the like, and the problem that a traditional hydraulic panel gives consideration to crack resistance, seepage resistance and safe service is solved.

The invention discloses an energy-saving stone transportation device for a gabion, and belongs to the technical field of stone transportation, the energy-saving stone transportation device for the gabion comprises a conveying mechanism used for conveying stones, and the conveying mechanism is provided with a screening mechanism used for removing small-particle-size stones and a gabion loading mechanism used for loading the stones into the gabion; through the screening mechanism composed of the shaking hopper, the eccentric plate and the spring, broken stones and dust which do not meet the particle size requirement can be automatically screened out, it is guaranteed that the sizes of stones entering the gabion are uniform, and the structural stability and the protection effect of the gabion are improved; according to the conveying mechanism, the conveying belt is driven to operate under the assistance of the gravity of stones, and the motor load is reduced; according to the gabion loading mechanism, the function of alternately loading two gabion gabions is achieved through the design of a switching electric cylinder and double discharge ports, stone conveying can still be kept uninterrupted when empty gabions are replaced, the shutdown waiting time is greatly shortened, and the overall operation efficiency is improved.

The present application belongs to the field of ecological restoration technology, and particularly relates to a composite grass planting system, a preparation method and application, and a damaged ecological system restoration method for lake and reservoir drawdown belt steep slope areas. The composite grass planting blanket provided by the present application mainly uses degradable biomass materials as raw materials, and does not form secondary pollution to the environment during use. Meanwhile, the present application can improve the water retention of the composite grass planting blanket through layer structure design, which is beneficial to the growth of vegetation. The composite grass planting blanket provided by the present application has good erosion resistance, and prolongs the service life of the composite grass planting blanket. When the composite grass planting blanket is used to restore the lake and reservoir drawdown belt steep slope area, the lake and reservoir drawdown belt steep slope area is divided into a frequently submerged area, a wind and wave erosion area and a lightly submerged area, and different types of plants are planted in different areas, so as to ensure the survival rate of the plants, reduce water and soil loss, and effectively realize ecological restoration.

The utility model discloses an ecological bag ecological slope protection structure, and relates to the field of slope protection. The ecological bag ecological slope protection structure comprises a slope body, ecological bag bodies are arranged on the slope body, the ecological bag ecological slope protection structure further comprises mounting plates arranged on the two adjacent ecological bag bodies and used for limiting and fixing the ecological bag bodies, and supporting assemblies are mounted on the mounting plates; the fixing assembly is arranged on the mounting plate, one end of the fixing assembly is inserted into the slope on the slope body, and the fixing assembly is used for preventing the mounting plate from being disengaged and deviated; the telescopic rod capable of being telescopically adjusted is arranged on the fixing assembly and used for increasing the contact area of the fixing assembly in the slope body; through cooperation of the fixing assembly, the supporting assembly and the mounting plate, the ecological bags stacked on the slope body can be limited and supported, displacement and collapse of the ecological bags are prevented, the maintenance effect of the slope body is improved, the fixing assembly is prevented from being disengaged during fixing and limiting, and the stability of the structure is effectively improved.

The invention belongs to the technical field of water conservancy projects, and discloses a self-locking anti-crack waterproof prefabricated water conservancy project ECC panel. By means of a material regulation and structural design cooperation method, the low-shrinkage ECC main body panel unit and the timely quantitative expansion ECC self-locking assembly connecting unit are combined, and volume deformation self-compensation high-precision assembly and self-locking anti-seepage lifting of the hydraulic prefabricated ECC panel after assembly are achieved. The panel has the advantages of high tensile strength, crack resistance, impermeability, durability and the like, compared with a traditional hydraulic panel, the mechanical property, the anti-seepage function, the durable safe service and the like are obviously improved, and the defect that an existing steel-concrete panel is insufficient in joint waterstop durability is overcome. The method can be specifically applied to the fields of rock-fill dam panels, pumped storage panels, water delivery canal linings, hydraulic anti-seepage reinforcement and repair, fabricated buildings and the like.

The invention discloses a high organic matter sludge-based ecological restoration spray-seeding base material preparation and vegetation method, the spray-seeding base material is prepared by mixing 60%-75% of dehydrated sludge, 5%-10% of an ecological curing agent, 3%-5% of pretreated straw fiber, 3%-8% of broken rice husk and 10%-15% of a solid waste conditioner by dry mass, a certain amount of water is added to adjust the slump of the base material to 170-180mm, and the spray-seeding base material has the characteristic of early strength. The planting construction is performed by three times of spray-seeding, the spray-seeding thickness of each time is 5-7cm, the interval time is not less than 3h, grass seeds are mixed during spray-seeding of the last layer, and the surface is covered with a degradable fiber net. The prepared base material has good fluidity, mechanical strength and vegetation performance and can be applied to various slope ecological restoration and greening planting projects, and large-scale collaborative ecological utilization of river and lake bottom mud and other industrial solid waste materials is achieved.

A system suitable for protecting shoreline or other target area / zone includes a geotextile sheet having an upper edge and a lower edge, the upper edge including a first channel through which a first draw cord is threaded, and the lower edge including a second channel through which a second draw cord is threaded. A flap has a lower portion affixed to the geotextile sheet proximal to its lower edge. The flap can further include un upper portion affixed to the geotextile sheet proximal to its upper edge, where the flap and the geotextile sheet form an enclosure.

The invention discloses a riverway ecological protection slope, and relates to the technical field of riverway nursing, the riverway ecological protection slope comprises a protection slope body which is sequentially arranged from the slope top to the slope toe, the protection slope body comprises a foundation supporting layer, an ecological structure layer and a vegetation community layer from inside to outside, and the ecological structure layer comprises a geotechnical composite material layer laid on the foundation supporting layer; the geotechnical composite material layer is of a three-dimensional net-shaped structure or a bag-type structure. Complex mechanical transmission, movable parts and sealing structures are completely omitted. The ecological niche complementary mixed planting mode of deep-rooted shrubs, shallow-rooted herbaceous plants and slope toe aquatic plants is adopted, the deep-rooted shrubs can enhance the deep stability of a slope body, the shallow-rooted herbaceous plants quickly cover a slope surface to reduce surface erosion, the aquatic plants are connected with a water and land ecological interface, and the deep-rooted shrubs, the shallow-rooted herbaceous plants and the water and land ecological interface cooperate to form a multi-layer and high-stability vegetation community; the water and soil conservation capacity of the bank slope is improved, diversified habitats are provided for animals and plants, and the natural ecological function of the river bank slope is restored.

The invention relates to the field and particularly discloses a cement blanket which is characterized in that the mesh diameter of gridding cloth on the upper layer is 3-20 mm, and the mesh diameter of gridding cloth on the lower layer is 1-5 mm. The invention relates to a construction method of a cement blanket, in particular to a process of paving a three-dimensional fiber composite structure on site and combining with spraying slurry on site. The method has the advantages that a unique three-dimensional fiber composite structure is combined with a dry concrete mixture on-site slurrying process, bubbles can be discharged in advance, the bubbles in the cement blanket are reduced, and meanwhile, the compactness of slurry in the cement blanket is improved; a three-dimensional fiber composite structure with good bending performance and plasticity is laid firstly, splicing seams are connected through stainless steel meshes, and meanwhile, a pressurized slurry spraying process is combined, so that the fitting degree between the cement blanket and the foundation can be improved, gaps and holes between the cement blanket and the foundation are reduced, the bearing capacity of a finished product is improved, and the service life is guaranteed.

The invention discloses light soil with a bionic multilayer structure for water conservancy slope protection and a preparation process of the light soil, and belongs to the field of water conservancy slope protection materials. In order to solve the problems that an existing slope protection material is poor in mechanical stability and ecological vegetation compatibility and prone to interlayer stripping, the light soil is integrally formed into a high-strength framework core layer, an ecological nutrition transition layer and an anti-scouring vegetation surface layer from inside to outside, and the volume ratio of the three layers is 5: 3: 2-6: 2: 2; the core layer contains light foam concrete, fibers and nano silicon dioxide, the transition layer contains porous ceramsite and slow release fertilizer, and the surface layer contains mixed seeds and anti-erosion fibers. During preparation, interlayer meshing is realized by vibrating and embedding the transition layer before initial setting of the core layer, and demolding is performed through standard curing. The anti-scouring flow velocity of the product is larger than or equal to 2.0 m / s, the interlayer shear strength is larger than or equal to 0.2 MPa, the three-month vegetation coverage rate is larger than or equal to 60%, mechanical protection and ecological functions are considered, and the method is environmentally friendly, economical and suitable for slope protection projects of rivers, reservoirs and the like.

The utility model relates to the technical field of water and soil conservation, and particularly discloses an ecological slope protection water and soil conservation device. Comprising grating blocks arranged on the surface of a soil layer of the ecological slope protection, the adjacent grating blocks are connected through mortise and tenon joint structures, and a plant protection area is formed in a central grating groove of each grating block; and the separating and positioning assembly is arranged in the soil layer on the lower side of the grating block, vertically penetrates through the slope protection floating soil layer and extends to the bearing layer. Through the arrangement of the grating blocks, the adjacent grating blocks are spliced through mortise and tenon joint structures, and an integral protective layer is formed on the surface soil layer of the ecological slope protection. And through the arrangement of the separating and positioning assemblies, the lower soil body can be divided into independent units, and the independent units are matched with the upper grating blocks to form a three-dimensional water and soil conservation frame, so that the overall stability of the slope protection is enhanced, and local water and soil loss and diffusion are prevented. The problems that a traditional slope protection structure is poor in synergistic protection effect and continuous water and soil conservation function, and interlayer slippage is likely to be generated under the long-term dry-wet cycle effect are solved.

The invention discloses a multifunctional stepped fish nest revetment structure which comprises a shoreside surface layer, the surface of the shoreside surface layer is covered with a stepped revetment, the stepped revetment comprises a plurality of stepped platforms, and a slope is arranged between every two adjacent stepped platforms. At least two fish nest devices are arranged on the top surfaces of the plurality of step-shaped platforms, anchoring parts are arranged between the bottom structures of the fish nest devices and the shoreside surface layer, filling spaces are arranged in the two sides of each fish nest device, and a plurality of natural stones are filled in the filling spaces. According to the multifunctional stepped fish nest revetment structure, through the combination of the stepped revetment and the permeable material layer, the flood prevention performance is remarkably improved, the flow velocity of flood can be effectively reduced, the impact force of the flood can be reduced, and through the design of the fish nest device, diversified inhabitation spaces are provided for aquatic organisms.

The utility model relates to a cement blanket erosion ditch head protection structure, in particular to a cement blanket erosion ditch head protection structure. The utility model aims to solve the technical problems that the existing erosion gully head protection slope cutting occupies land, slope cutting shaping is needed, and the process is complex. The cement blanket is used for protecting the erosion gully head, can adapt to complex gully head forms, does not need slope cutting and land occupation, is simple in construction and low in manufacturing cost, and can quickly and effectively solve the problem of source tracing erosion of the erosion gully head. The cement blanket erosion gully head protection comprises a cement blanket laying part and a downstream block stone apron part. After the cement blanket is laid, runoff is guided into the erosion gully from the gully head, the gully head of the erosion gully is controlled to advance, and the downstream apron section is used for dissipating energy of the runoff and plays a role in transition and buffering. According to the utility model, tamping and flattening are mainly used, so that the trimming difficulty at the ditch head is greatly reduced, and the trimming cost is also reduced.

【assignment】 Budgetary constraints make it difficult to build levees high enough to accommodate predicted tsunami heights. Construction of tsunami evacuation shelters has also been slow due to the risk of blocking visibility of the ocean. [Solution] By utilizing the existing coastal levee in front of us and stacking a tsunami evacuation shelter that protrudes higher than the levee height on its backside, we can be satisfied with the height and strength. Even if submerged by a tsunami, the box-shaped structure of the tsunami evacuation shelter retains air inside, so people can survive. Just like having an evacuation shelter right in front of you in your daily life, it is easy to gain support for raising the levee. Quick evacuation with the whole family is possible. Peace of mind 24 hours a day. Being prepared is a blessing. Being able to live each day safely and with peace of mind is truly a blessing.

The invention provides a seabed anti-scouring system based on a bionic flow guide structure and a manufacturing method, and belongs to the technical field of offshore structure construction. In the seabed anti-scouring system based on the bionic flow guide structures, a seabed building is located on a seabed, a plurality of first flow guide structures are arranged around the seabed building, and each first flow guide structure comprises a flow guide groove and a plurality of first bionic fish scale plates rotationally connected with the flow guide groove; the multiple first bionic fish scale plates are arranged on the flow guide groove in the extending direction of the flow guide groove, multiple open holes are formed in the groove wall of the flow guide groove, and the multiple second flow guide structures are located between two first flow guide structures in the multiple first flow guide structures correspondingly. Each second flow guide structure comprises a strip-shaped bottom plate and a plurality of second bionic fish scale plates mounted on the strip-shaped bottom plate; the gel layer is located on the seabed and located between the multiple first flow guide structures and in the flow guide grooves. The beneficial effects that the stability of the seabed anti-scouring system based on the bionic flow guide structure is improved, and the service life of the seabed anti-scouring system is prolonged are achieved.

The utility model discloses a water conservancy slope protection piece, and relates to the technical field of protection technology, the water conservancy slope protection piece comprises a support frame, corners of the support frame are provided with through holes, at least two through holes are provided with positioning devices, and the positioning devices are used for fixing the support frame on a slope to press a slope protection net; the positioning device comprises a fixing nail which is fixedly connected with the bottom of the supporting frame. The fixing nail is provided with a fixing groove, the fixing groove and the through hole are coaxial and communicated, through grooves are evenly distributed in the side wall of the fixing nail in the circumferential direction, and the through grooves and the fixing groove are communicated. A supporting block is arranged in the fixing groove and slides along the fixing groove. A plug connector is arranged in an inner cavity of the through groove; the plug-in piece comprises a plug-in rod and a fixing block, the plug-in rod is provided with a limiting groove, the plug-in rod penetrates through the through groove and extends into the fixing groove to be rotationally connected with the supporting block, the fixing block is located in the limiting groove, and one end of the fixing block extends out of the limiting groove to be fixedly connected with the fixing nail. The supporting device is reasonable in design structure, and can be fixed on a side slope at different positions, so that a steel wire mesh is stably supported.

The invention discloses a preparation method of low-alkali plant-growing concrete with full-dosage phosphogypsum and recycled aggregate, and belongs to the technical field of resource utilization of industrial solid waste and building solid waste and ecological building materials. The low-alkali plant-growing concrete containing the full-dosage phosphogypsum and the recycled aggregate is prepared from the following raw materials in parts by weight: 180 to 190 parts of semi-hydrated phosphogypsum, 1365 to 1375 parts of the recycled aggregate, 55 to 65 parts of cement, 17 to 22 parts of fly ash, 0.4 to 0.6 part of a water-retaining agent, 32 parts of electrolytic manganese residues and 0.8 to 1.2 parts of a water reducing agent. The low-alkali plant-growing concrete prepared by the invention realizes full utilization of solid wastes, construction of a low-alkali environment and cooperation of a suitable pore structure and plant nutrition supply, and the comprehensive performance meets ecological engineering requirements.