60 results about "Check dam" patented technology

A method for constructing a check dam or a fire prevention dam using a gear-type block comprises depositing a bottom mat for protecting weak ground or a mat for containing water on a prepared river bed of a river or a valley; piling a plurality of gear-type blocks such that adjacent blocks are connected together using connecting rings provided at the lateral parts of the block, and lower and upper blocks are engaged with each other by means of projections and grooves formed at the upper and lower parts of the block; and forming a block mattress on said bottom mat at upper and lower streams of the lower end of said dam structure by horizontal engagement of blocks.

The invention aims to provide a series-connected type sand trapping net cage and a sand storage dam constructed by the same, belonging to the technical field of engineering. Each series-connected type sand trapping net cage with an A-shaped section consists of a front bracket, a rear bracket and sand trapping nets stretched on the front bracket and the rear bracket, the series-connected type sand trapping net cage is formed by connecting all series-connected type sand trapping net cages in series one by one along a desert, the quicksand of the desert is intercepted and trapped by the series-connected type sand trapping net cage and gradually rises, and when the height of the sandpile is 20-30 cm far from the top end of the series-connected type sand trapping net cage, the series-connected type sand trapping net cage is pulled up, the first construction structure is repeated at the top of the sandpile; when the quicksand is piled to the height 20-30 cm far from the top end of the series-connected type sand trapping net cage again, the series-connected type sand trapping net cage is lifted up according to the mode and the structure again; a check dam which takes the series-connected type sand trapping net cage as the top is formed by repeating the mode and structure for three times, four times and several times so as to achieve the purpose that the quicksand of the desert is intercepted so as not to invade inlands.

This invention discloses ocean tide power generation equipment and method, which contains V-shape check dam, overtopped dam, water storage reservoir, drainage reservoir, water intake gate, drainage sluice and power generator set. When the ocean is on the tide, open intake gate, close sluice in ebb, use the water level difference to generate electricity. Said V-shape check dam can collect sea water as the tide is small. Said invention has low cost and stable operation.

Improved breakwater construction blocks and interlocking shear key blocks for use in constructing diverse systems and works, in broad fields of use including, but not limited to, coastal engineering: river, stream and torrent control, bulkhead designed projects, scour control, check dams, permeable and impermeable groins-both river and ocean structures and other hydraulic works including marinas.

A stone cage check dam used for mountainous area erosion gully control comprises cement piles. The stone cage check dam is characterized in that a cylindrical cage is formed by a wire net which is formed by galvanized iron wires in a staggered weaving mode, and rock blocks are placed into the cylindrical cage; a gully bottom base is excavated from the center line of a gully bottom downwards, multiple layers of stone cages which are overlapped are horizontally paved inside the base, a layer of stone cage is vertically paved on the upper portion of the base, and all the stone cages are connected through iron wires; a row of cement piles which are embedded into the gully bottom are respectively arranged on the two sides of the multiple layers of stone cages which are horizontally paved, a plurality of stone cage check dams are arranged along the erosion gully, and the distance between every two stone cage check dams satisfies the requirement that the bottom portion of the prior stone cage check dam is at the same height as the top portion of the next check dam. The stone cage check dam can realize mountainous area erosion gully control, is not limited by water flow speed, gully sand content, gully widths, gully erosion types and the like, can prevent gully head advancing, gully shore expanding and gully bend sapping and realize comprehensive control over erosion gullies, has the advantages of being strong in water permeability, high in stability, long in service life, low in cost and the like, and not only solves the problem of water and soil loss of the mountainous area erosion gullies, but also enables the gullies to deposit to form terraces, so that the area of available land is increased, and conditions are provided for agriculture and forestry production.

The invention discloses a sediment desilting method of turbulent debris flow and flood with hyperconcentration and application thereof. The sediment desilting method includes arranging a plurality of wire box bed reinforcing dams in a main gully bed to stabilize the main gully bed mass for fixing the main gully bed in sections; the upstream of the main gully bed is provided with a gravity drainage check dam used for drainage; the side part of the main gully bed at the downstream of the gravity drainage check dam is provided with a wire box sand depositing pool; the gravity drainage check dam and the wire box sand depositing pool are connected through a drain; the wire box sand depositing pool and the main gully bed are connected through a flood discharge pipe to drain the clean water through the sand deposition treatment of the wire box sand depositing pool to the main gully bed. Compared with the prior art, the invention can effectively desilt the thin particle matters of the turbulent debris flow and the sediment of the flood with hyperconcentration and avoids the sediment from silting the reservoirs in the downstream, the lakes in beauty spots as well as silting the farmlands and cities. The sediment deposited in the wire box sand depositing pool can be utilized for the area lack of construction sand.

The invention discloses a frame type debris flow sand retaining dam and a construction method thereof. The frame-type debris flow sand control dam includes a dam body foundation and a dam body body arranged on the dam body foundation, and a reinforced concrete frame and masonry stones filled between the frames constitute the dam body body. Compared with the prior art, the present invention aims at the situation that the dam body is damaged due to factors such as difficulty in controlling the construction quality and foundation subsidence of the currently widely used grouted-stone debris flow sand retaining dam. The dam is divided into relatively independent small spaces, and the strength of the dam body is enhanced in blocks. In the case of a small increase in investment, the strength of the dam body is greatly improved and the service life of the dam is extended; it is compatible with concrete dams, reinforced concrete dams with high strength and mortar masonry Dam investment saves two advantages in one.

The invention provides a management-and-protection-free integrated check dam and a construction method thereof. The check dam comprises a homogeneous earth dam body and a protection layer arranged onthe homogeneous earth dam body. The protection layer comprises an upstream slope protection layer, a downstream slope protection layer and a mixed material layer, and the mixed material layer is integrally connected with the upstream slope protection layer and the downstream slope protection layer. The construction method includes the steps that grinding and filling of the homogeneous earth dam body are conducted; mixed materials are prepared, the mixed materials are transported to the positions of the upstream slope protection layer and the downstream slope protection layer to be spread and subjected to grinding construction synchronous with the homogeneous earth dam body, and meanwhile lifting is conducted; various layers of draining blind pipes are buried; and filling of the mixed material layer is conducted. By means of the management-and-protection-free integrated check dam and the construction method thereof, the dam slope scouring preventing capability of the prepared management-and-protection-free integrated check dam is high, the problem that the check damp is likely to be collapsed when being subjected to floods exceeding the standard can be effectively solved, and in addition, the engineering management and protection task can be simplified.

The invention provides a construction method of a pipe-protection-free integrated check dam. The method comprises the following steps that a loess curing agent mixer is used for mixing a mixture, and the mixture comprises loess and a loess curing agent; the mixture is slipped into a loess extruder to be extruded into an anti-scouring protection layer; after the anti-scouring protection layer has certain strength, the rolling and filling construction of an inner side homogeneous earth dam body is started; and the steps are repeated until a dam crest elevation is achieved. According to the method, before construction of the homogeneous earth dam body, the protection layer similar to a trapezoid is manufactured through the loess extruder, then the homogeneous earth dam body is laid and fills the inner side of the protection layer according to the design, plane rolling is conducted through a vibration roller, and compared with a traditional construction method, the prepared pipe-protection-free integrated check dam protection layer is high in construction efficiency, the protection layer can adapt to uneven settlement of the dam body, is high in anti-scouring capacity, can effectively solve the problem that the check dam is prone to break when passing through standard flood, and can simplify engineering management and protection tasks.

The invention belongs to the technical field of natural disaster prevention, and discloses a small watershed debris flow disaster prevention method and system. (1) Barrier dam and check dam projects are distributed in a Ngawang creek debris flow forming area and a N1 debris flow ditch and a N2 debris flow ditch of Huangjiawan debris flow; (2) a training wall project is distributed on a big white river bed to the east of a Ngawang town; (3) a drainage groove project is distributed in a Ngawang creek debris flow ditch accumulating area; (4) a scour preventing wall project is distributed in an intersection between a Ngawang creek debris flow ditch and a south side gully of the Shimen village committee; and (5) trees, shrubs and herbaceous plants, growing in the area, are planted in the Ngawang creek debris flow ditch forming area. Main power mechanical parameters of the debris flow are calculated, and the activity is estimated to provide the debris flow prevention project proposals; and prevention project schemes are recommended.

The invention provides a compound check dam water and soil conservation method, and relates to the check dam water and soil conservation method. The invention aims to overcome different exposed disadvantages of an existing uni-structure check dam in controlling an eroded gully channel. The method comprises the steps that a plurality of stone check dams are laid along the eroded gully channel, andin half a year after the stone check dams are built, a willow check dam is laid on the upper stream of each stone check dam in the first spring or autumn. According to the compound check dam water andsoil conservation method, provided by the invention, the stone check dams and the plant check dams are combined organically; the stone check dams are on the down stream, and the plant check dams areon the upper stream; in half a year after the construction of the stone check dams, an upper stream section is silted into a siltation area by silt carried by runoff, and warp soil in the siltation area is fertile, is suitable for plant growth, is beneficial to the survival of the plant check dams, and improves preserving rate of the plant check dams; a revegetation problem in controlling the eroded gully channel is solved, and at the same time, the impact resistance of the downstream stone check dams can be relieved; and the water damage rate of the stone check dams is lowered. The compound check dam water and soil conservation method provided by the invention is suitable for water and soil erosion control of the eroded gully channels with serious water and soil loss in rolling hilly areas, low mountain and hill areas and the like.

The invention discloses a method for designing a lying pipe and a culvert of a silt dam. The method comprises a design method for a lying pipe part and a design method for a culvert part, wherein the design method for the lying pipe part comprises the following: according to the formula of Q=mu A 2gH, cross section area of one or more than one water drain hole on each water drain step is calculated, and the design method for the lying pipe part also comprises the design for the sizes of a square lying pipe, a circular lying pipe and a stilling pool and the design for the thickness of a cover plate and the side walls; and the design method for the culvert part comprises the design for the culvert size and the design for the wall thickness and reinforcing bars. The whole design process is clear, and the design result is accurate.

The invention discloses a prevention and treatment system of a large spoil area in a debris flow gully and an implementation method. The prevention and treatment system comprises the spoil area (1), a check dam (2), a silt stopping plant (3), a drainage trough (4) and a blocking dam (6); the check dam (2) is located on the upstream of the debris flow gully, the silt stopping plant (3) is located between the check dam (2) and the blocking dam (6) transversely arranged on the downstream, the drainage trough (4) is located on one side of the spoil area (1) and is arranged along the edge of the spoil area (1), and an inlet of the drainage trough (4) is located on the upstream of the top of the spoil area (1). The shortcoming that a prevention and treatment structure often losses efficiency due to single controlling measures in the prior art is overcome, huge excavation and support construction is not needed, and the beneficial effects of reducing project waste slag and the land acquisition area of the spoil area and saving the land resources are achieved.

The invention provides a pipe-protection-free integrated check dam and a downstream slope protection layer surface construction technology thereof. The pipe-protection-free integrated check dam comprises a homogeneous earth dam body and a protective layer arranged on the surface of the homogeneous earth dam body, the protective layer comprises an upstream slope protection layer, a mixture layer and a downstream slope protection layer, the upstream slope protection layer, the mixture layer and the downstream slope protection layer are sequentially connected into a whole, and the upstream slope protection layer, the mixture layer and the downstream slope protection layer are arranged on the upstream dam slope surface, a dam crest and the downstream dam slope surface of the homogeneous earth dam body respectively. A plurality of layers of drainage blind pipes are embedded in the inner edge of the homogeneous earth dam body, each layer is provided with a plurality of drainage blind pipes, and the drainage blind pipes all penetrate through the downstream slope protection layer to extend to the external environment.

A plug-in valley. The invention relates to a water and soil conservation engineering measure, in particular to a plug-in type valley. The present invention solves the problem that the existing Gufang cannot satisfy the common requirements of stability, convenient construction, less investment and versatility at the same time. A plug-in type valley includes a fixed seat and a plug-in board, the middle part of the fixed base is provided with a through groove along the thickness direction, the plug-in board is vertically inserted in the lower end of the through-groove, and a plurality of through holes are evenly distributed on the front end surface of the plug-in board , and each through hole is respectively arranged along the thickness direction of the plug-in board. The present invention is used for soil and water conservation.

The invention discloses a water and soil conservation method for an orchard in a hilly area in northwest Liaoning, and relates to the technical field of orchard maintenance. The method is characterized by comprising a terrace construction water-conservation technology, a fish scale pit water-conservation technology, a trenching water-conservation technology, a check dam construction water-conservation technology, a front upstream trench water-conservation technology, a vegetation covering water-conservation technology and an orchard deep-tillage and hole expanding water-conservation technology. The method is reasonable and convenient to implement, and has good effects.

The invention provides a device and a method suitable for comprehensive treatment of post-fire debris flow of a burned area. The slope protection measures aim at the upstream slope of the burnt area debris flow basin, grass seeds are sown through an unmanned aerial vehicle or manpower, trees are planted manually, and water and soil loss is reduced. Meanwhile, log trunks and treetops are used for manufacturing a simple slope surface blocking device, and slope surface erosion is weakened. The material source cleaning measure aims at the whole area of debris flow of the burned area, and burnout tree branches are transferred to a safety zone and prevented from participating in debris flow starting. In the branch ditch blocking measure, a log residue blocking device is arranged in an upstream ditch channel, and most dry branches and fallen leaves in the ditch channel are blocked; the simple check dam is arranged in main and branch ditches in the middle and upper stream in the drainage basin to intercept most solid substances in the middle and upper stream. A conventional debris flow treatment method is used as a main ditch downstream treatment measure, and a silt arrester and a grit chamber are included. The method is simple to operate and easy to understand, most engineering raw materials can be obtained on site, the construction difficulty is small, cost is saved, and the method is environmentally friendly.

The invention provides a comprehensive treatment measure for preventing and treating channel debris flow starting and a design method thereof, and belongs to the field of debris flow prevention engineering. According to the comprehensive treatment measure, a check dam group is arranged in a debris flow formation area to lift an erosion datum plane, then a structural body is buried in a debris flow gully bed, the surface of the structural body is flush with a gully, the structural body is composed of at least one structural single body, the structural single body is a gabion net square grid, a reinforcing layer is arranged on the surface layer of the gully bed; the gabion net is filled with rocks which are not prone to weathering, and an original ditch bed is arranged in the middle of square grids of the gabion net. Finally, arbor and/or shrub are/is planted in the square grids of the gabion net, and the planted vegetation is preferably selected from indigenous species which are developed in root system and resistant to drought and flood. According to the comprehensive treatment measure for preventing and treating channel debris flow starting and the design method thereof, the check dam group is arranged to inhibit traceability erosion, and the gully bed is stabilized through the measures of arranging the gabion net and planting the vegetation, so that the starting of substances in the gully bed is inhibited, and the situation that the vegetation is not rooted in an initial planting stage is guaranteed. Through combination of engineering measures and ecological measures, debris flow is effectively prevented and stopped, or the scale of the debris flow is reduced.

The invention discloses a mud pump damming integrated machine. The mud pump damming integrated machine comprises an axle, an earth material storage container, an earth material conveying system, an earth material vibrating screen, a mud production device and a mud conveying pump; the earth material storage container, the earth material conveying system, the earth material vibrating screen, the mud production device and the mud conveying pump are arranged on the axle; one end of the lower portion of the earth material storage container is provided with an earth material breaking mechanism; the earth material conveying system is located under the earth material storage container; the earth material vibrating screen is located under the earth material conveying system; the mud production device is located under the earth material vibrating screen; earth materials and water which is supplied by a water supply system are mixed into mud through the mud production device; the water supply system is arranged on the lower portion of the mud production device and is communicated with the mud production device; the mud conveying pump is located in front of the mud production device and is communicated with the mud production device. According to the mud pump damming integrated machine, the problems that the water drop damming dam site selection is limited, the mud concentration cannot be controlled, the quality of a dam body is non-uniform, geological disasters such as landslides are easy to cause, working conditions of the operating personnel are poor, the labor intensity is large, and the security is difficult to guarantee are solved, the mechanization and the automation of check dam construction are achieved, and the construction quality and efficiency is improved.

The invention provides an ecological restoration method for a water-eroded slope surface of an alpine grassland. The method comprises the following steps: building a plurality of flood intercepting ditches on a bare land to be restored along a contour line, longitudinally communicating the flood intercepting ditches to a valley of a hillside along drainage ditches, building the drainage ditches along the valley, building check dams below the drainage ditches at intervals, building a stilling pool at the toe of the slope, arranging effluent weirs at outlets of the flood intercepting ditches, and installing a drip irrigation pipe network system at the bottom; and digging out surface soil of the bare land to be restored, carrying out multi-layer screening on the dug surface soil and soil dug out of the flood intercepting ditches, making stone ridges from screened stones and small gravels, laying screened clay soil on the lowest layer of the bare land to be restored, mixing powder soil, sand soil, yak manure, seeds and cut grass sections, laying the mixture on the clay soil layer as a composite layer, and laying coarse sand grains on the composite layer, and completing ecological restoration of the water-eroded slope surface of the alpine grassland. According to the method, through the combination of engineering facilities and ecological protection, interference to ecology is reduced, and a good repairing effect on the water erosion phenomenon is achieved.

The invention discloses a method for confirming a drainage culvert position of a water-saving check dam. The method comprises the steps of according to a design scale of a check dam, extracting basicparameters of the check dam; carrying out calculation to obtain a change rate dG<engineering>/dy of engineering investment G<engineering> along with bottom height y of a drainage culvert according tothe extracted basic parameters; carrying out calculation to obtain dam land benefit annual increment change -x+/deltah according to design annual benefit x and annual deposition thickness deltah of the check dam; carrying out calculation to obtain annual water loss benefit change cu<i+1>/deltah according to annual water loss negative benefit increment cu and the annual depositionthickness deltah of the check dam; and gradually increasing the bottom height y value of the drainage culvert, thereby obtaining a series of x<i+1>/deltah+cu<i+1>/deltah values, comparing the values with the -dG<engineering>/dy, and determining a corresponding y value as the determined bottom height of the drainage culvert when the difference of the values and the -dG<engineering>/dy isthe minimum. According to the method, the engineering investment of key drainage buildings such as the culvert, horizontal pipes, silos and a drainage chute can be effectively reduced, the check dam land building benefit is not reduced, the negative benefit of initial water storage ineffective evaporation is reduced, and a purpose of blocking mud without reducing water is achieved.