295results about How to "Avoid scour" patented technology

The invention discloses a method and device for solving casting bleed-out of a nitrogen-containing cobalt-chromium-molybdenum mother alloy bar, and the method comprises the following steps: pressing operation: driving a lower pressing roller to perform fixed-axis rotation on the inner wall of a rectangular through groove through a motor, so that an upper pressing roller and a lower pressing roller synchronously roll an aluminum silicate felt, and the density of the aluminum silicate felt is increased; cutting operation: an eccentric block is eccentrically placed on a second belt pulley, so that a cutting blade can perform equidistant cutting on the rolled aluminum silicate felt on the surface of the workbench, the accuracy of the size of the mold is ensured, and fixed operation: during cutting, a sleeve rod drives a pressing plate to synchronously move downwards, so that the pressing plate can be stably pressed on the aluminum silicate felt; displacement or deformation of the aluminum silicate felt in the cutting process is avoided, and it is guaranteed that the surface of the cut aluminum silicate felt is smooth.

The invention belongs to the technical field of sealing regulating valves, and discloses a magic block type pressure reduction hidden spherical sealing regulating valve which comprises a valve body, a liquid inlet cavity and a liquid outlet cavity are formed in the valve body, a valve seat is arranged between the liquid inlet cavity and the liquid outlet cavity, a multi-stage trapezoidal valve cage is arranged above the valve seat, and the multi-stage trapezoidal valve cage is arranged outside a valve clack in a sleeving mode and pressed on the valve seat. A plurality of flow guide holes with the same specification are evenly formed in the cage wall of the multi-stage trapezoid valve cage in the circumferential direction, the flow guide hole in the lowest position is higher than the sealing face of the valve seat, so that the multi-stage trapezoid valve cage protects the sealing face of the valve seat, and a first anti-scouring layer is formed. A sealing ball protrusion is arranged in the center of the lower portion of the valve clack, and a circle of downward annular protrusion is arranged on the periphery of the sealing ball protrusion. The valve seat is provided with a ball concave part and an annular concave part corresponding to the sealing ball protrusion and the sealing annular protrusion, and the annular protrusion is a second anti-scouring layer. The high-pressure-difference drain regulating valve is reasonable in design, effectively improves the reasonability of the structure of internal parts of the drain regulating valve, greatly improves the sealing performance, can achieve zero leakage and scouring resistance, and prolongs the service life.

The utility model discloses a dry building vegetation retaining wall which comprises undisturbed soil, a concrete foundation and a first concrete coping, the concrete foundation is arranged on the side, close to a riverway, of the undisturbed soil, the first concrete coping is arranged on the top layer of the undisturbed soil, and a riverway retaining wall is arranged above the concrete foundation. A broken stone hardcore is arranged on the slope face of the undisturbed soil, an ecological retaining wall is arranged above the broken stone hardcore, and an ecological protection slope is arranged in the ecological retaining wall. The concrete foundation is built beside the riverway, the riverway retaining wall is built on the concrete foundation so as to reduce direct contact between a riverway water source and undisturbed soil, meanwhile, the ecological retaining wall is laid on the riverway slope through the broken stone hardcore, and in the weather with a large amount of rainfall, the slope protection upper layer is protected by the ecological retaining wall. Silt and stones are prevented from being scoured, and the overall protection performance of the retaining wall is effectively improved.

The invention belongs to the technical field of biological environment monitoring, and particularly relates to a resource investigation monitoring device for aquatic organism environment DNA passive collection, the resource investigation monitoring device comprises a telescopic rod piece and a collection frame, the handheld end of the telescopic rod piece is provided with a timer body, and the collection frame is an independent split module. The resource investigation monitoring device for passively collecting the aquatic organism environment DNA has the effects of improving the biological environment DNA collecting efficiency and being suitable for more environments, in the using process, an operator does not need to make contact with the water environment in most cases, it is avoided that DNA on the operator is mistakenly collected, the device fixing point is located on the shore land, and the device fixing point is not prone to damage. Therefore, the river sediment environment does not need to be selected, and the device is suitable for various stable or unstable water sediment environments such as mud, gravel blocks and fine sand and can be placed in both gentle water areas and torrent water areas.

The invention provides tundish stuffing sand and a preparation method thereof, and belongs to the technical field of steelmaking continuous casting. The invention relates to tundish drainage sand, which is prepared from the following components in parts by weight: 40 to 60 parts of magnesite sand, 15 to 35 parts of dolomite sand, 10 to 30 parts of raw perlite, 5 to 15 parts of kyanite, 10 to 30 parts of rare earth mineral powder and a binder. The weight part of the rare earth mineral powder is 2-5, and the weight part of the binder is 1-3. The tundish stuffing sand is suitable for a stopper-free flow control pouring method, the automatic pouring rate is increased, and molten steel pollution is reduced.

The invention belongs to the technical field of offshore wind power foundation piles, and provides an offshore wind power foundation pile combined protection device and method.The protection mechanism comprises a first protection plate arranged on a first connecting mechanism, a second protection plate connected with the first protection plate and a plurality of wave dissipation holes formed in the second protection plate; the first protection plates are obliquely arranged in the axial direction of the wind power foundation pile, the second protection plates are obliquely arranged in the radial direction of the wind power foundation pile, and gaps between the adjacent protection mechanisms are gradually reduced from bottom to top in the axial direction of the wind power foundation pile, so that water flows on the surfaces of the first protection plates and the second protection plates in the process of flowing to the wind power foundation pile. The scouring capacity of gaps between the adjacent protection mechanisms is gradually reduced, and meanwhile, the protection mechanisms and the wind power foundation piles are protected; and meanwhile, viscous minerals injected into the soil layer in advance are diffused through the electroosmosis well and form a consolidation body with the soil, and rapid and targeted consolidation protection on the soil layer around the offshore wind power foundation pile under the condition of rapid scouring is achieved.

The utility model belongs to the technical field of sintering machine air bellow gas temperature measurement, and particularly relates to a novel sintering machine air bellow gas temperature measurement device. Which comprises a sintering machine air bellow, and an air bellow retaining wall, an air bellow supporting beam and a track supporting beam are arranged at the bottom of the sintering machine air bellow, and is characterized in that a primary protection pipe is welded to the air bellow retaining wall, the other end of the primary protection pipe is welded to the air bellow supporting beam, and a protection cover bottom plate is welded to the upper portion of the primary protection pipe through T-shaped steel; the protective cover bottom plate is coated with a protective cover coating, and a plurality of secondary protective pipes with one ends penetrating through the lower side of the primary protective pipe are connected into the primary protective pipe in a sleeved mode. According to the air bellow gas measuring device, multi-layer protection can be carried out on the independent thermocouples, washing of sintered ore is avoided, the measuring precision is guaranteed, the independent thermocouples can be rapidly replaced, the service life of the air bellow gas measuring device is prolonged, operation is reliable, and the manufacturing cost is low.

The invention relates to the field of underground coal mine extraction, in particular to a negative-pressure automatic drainage device for an underground coal mine extraction pipeline. According to the negative-pressure automatic drainage device for the underground coal mine extraction pipeline, when the liquid level sensor is damaged, the drainage plate can still be opened for drainage, and the influence on the gas extraction efficiency and safety is avoided. An automatic negative-pressure drainage device for an underground extraction pipeline of a coal mine comprises a mounting frame, a collecting pipe and the like, and the collecting pipe is connected to the upper side of the right portion of the mounting frame. When accumulated water exists in the collecting pipe, negative pressure in the collecting pipe is reduced, a first pressure spring rebounds, a pressing plate moves outwards to be separated from a switch, the switch triggers an electric push rod on a first connecting piece to be started, a second connecting piece is driven to move, and a drainage plate is rotated to be opened; and the drainage plate can still be opened to drain water, so that the influence on the gas extraction efficiency and the safety is avoided.

The invention discloses a sandy soil river bank anti-scouring ecological slope protection system which comprises a protection slope, and the protection slope comprises a forest cultivation area, a building block slope protection area and an aquatic plant cultivation area which are sequentially arranged along a river bank from top to bottom; an upper fixing frame is arranged above the building block slope protection area, a lower fixing frame is arranged below the building block slope protection area, stone blocks are arranged between the upper fixing frame and the lower fixing frame, planting layers are arranged on the upper side and the lower side of the stone blocks, and planting grooves are formed in the stone blocks; the wave absorbing assembly comprises a plurality of resistance wells arranged on the two sides of the building block slope protection area, damping media are arranged in the resistance wells, damping plates are arranged in the resistance wells, and rotating shafts are arranged on the damping plates. The problems that an existing sandy soil river bank is difficult to fix soil in a greening mode, the surface structure of the slope protection is prone to being damaged under washing of water flow, and collapse of the slope protection can be caused for a long time can be solved.

The invention discloses an anti-scouring three-dimensional ecological slope protection structure and relates to the technical field of slope protection, the anti-scouring three-dimensional ecological slope protection structure comprises a slope body, a groove is formed in the top of the slope body, a curing layer is fixedly connected to the inner surface of the groove, a drainage groove is formed in the front surface of the slope body, and a planting layer is fixedly connected to the outer surface of the slope body; the planting layer is located at the slope position of the outer surface of the slope body; according to the anti-scouring three-dimensional ecological slope protection structure, along with continuous impact of water flow on the baffles, the baffles can drive the brush plates to repeatedly move on the surfaces of the filter plates, the filter plates can be continuously cleaned through repeated movement of the brush plates, it is ensured that the filter plates are always kept in a circulating state, and reverse drainage can be continuously and stably conducted at the position of the water tank to slow down the water flow; power is provided for displacement movement of the baffles and the movable frame through flushing water flow, driving equipment does not need to be independently arranged, the construction cost of the slope protection is reduced, and the effects of energy conservation and emission reduction are achieved.

The invention discloses a spartina alterniflora management method based on mechanical mowing and tidal water level regulation, which comprises the following steps: using mechanical mowing equipment to mow spartina alterniflora in the growth peak period of spartina alterniflora, and cutting the overground part to the height less than 5cm; dividing the treatment area into high, medium and low tidal flat according to the tidal flat elevation, and establishing a dam filled with sand and covered with degradable cloth in each area; adjusting the height of the dam according to the tidal cycle and the tidal flat elevation, so that the high tidal flat area is submerged by natural saline water at least twice a month during the large tide; after the spartina alterniflora is treated, the sandy dam and the anti-scouring cloth are gradually removed, the original ecological system of the wetland is restored, and local plants are planted to promote natural restoration. According to the method, low-cost, high-efficiency and eco-friendly long-term treatment of the spartina alterniflora can be realized in a large-area mud flat area, so that the operability, sustainability and environmental friendliness of the treatment effect are remarkably improved, and the method has wide popularization and application values.

The invention belongs to the technical field of slope protection, and particularly relates to a slope ecological restoration slope protection device and method.The slope ecological restoration slope protection device comprises a frame, the two sides of the frame are each fixedly provided with a pair of lug bases, ground nails used for fixing the frame to a slope body are inserted into the lug bases, a plurality of evenly-distributed leaf plates are arranged in the frame, and the two ends of each leaf plate are each fixedly provided with a shaft column; the end of the shaft column penetrates through the frame and is rotationally connected with the frame, the bottom end of the frame is slidably connected with a water tank, and the water tank is connected with the shaft column through a transmission assembly. In the invention, in a normal state, the leaf plates are kept in a state of forming an inclination angle with the frame, so that the soil on the slope body can normally collect light without influencing the normal growth of vegetation, and in rainy days, when the rainfall borne in the water tank is gradually increased, the water tank slides downwards, and then the shaft column and the leaf plates are driven to rotate through the transmission assembly, so that the slope body is protected. The blade plates are parallel to the surface of the frame, the frame is closed, and therefore rainwater is prevented from scouring soil.

The embodiment of the utility model provides a heat dissipation assembly and computing equipment, and the heat dissipation assembly comprises a circuit board which is provided with a plurality of heating components; the radiator is arranged on one side, deviating from the circuit board, of the heating component; the anti-scouring sheet comprises a plurality of first parts arranged between the heating components and the radiator, the plurality of first parts are arranged in one-to-one correspondence with the plurality of heating components, heat dissipation holes are defined in the first parts, and heat dissipation media are arranged in the heat dissipation holes; the second parts are arranged on the peripheries of the first parts, and the second parts are used for connecting the adjacent first parts with each other. According to the technical scheme, the heat dissipation medium and the cooling liquid can be isolated, sealing and protection of the heat dissipation medium are achieved, the heat dissipation medium is prevented from being scoured and dissipated under the long-term soaking condition, and therefore the operation reliability of the computing device can be improved while the heat dissipation effect is guaranteed.

The invention discloses a soil covering and grass planting protection structure suitable for a rock cutting slope. The soil covering and grass planting protection structure comprises a flow guide mechanism, a reinforcing mechanism and a greening mechanism. The flow guide mechanism comprises drainage side ditches, transverse flow guide ditches, longitudinal flow guide ditches, J-shaped flow guide grooves and U-shaped flow guide grooves; the drainage side ditch is arranged at the slope toe of the side slope; the transverse diversion trenches are transversely arranged along the slope and are W-shaped; a plurality of longitudinal diversion trenches are vertically arranged along the side slope, and the longitudinal diversion trenches are connected with the lowest positions of wave troughs of the W-shaped transverse diversion trenches, so that the side slope is partitioned and layered; the J-shaped flow guide grooves are embedded into the transverse flow guide ditches; the U-shaped flow guide grooves are embedded into the longitudinal flow guide ditches; the lower end of the U-shaped diversion trench is connected with the drainage side ditch; the reinforcing mechanism comprises a fixing piece and a reinforcing mesh; the greening mechanism comprises an overburden layer and a grass planting layer. The invention further discloses a construction method suitable for the soil covering and grass planting protection structure for the rock cutting slope. The stability and the greening effect of the silty rock cutting high slope greening structure can be ensured.

The invention provides a highway subgrade slope reinforcing device, and relates to the technical field of highway engineering. The highway subgrade slope reinforcing device comprises a reinforcing seat, a reinforcing cylinder is fixedly mounted on one side of the reinforcing seat, four reinforcing frames are arranged on the outer side of the reinforcing seat, a plurality of first clamping holes are formed in the four reinforcing frames, reinforcing plates are fixedly mounted in the reinforcing frames, two fixing anchor rods are further arranged on the reinforcing plates, and the reinforcing plates are fixedly connected with the reinforcing cylinder. A first lead screw is rotationally installed in the reinforcing cylinder, a fixing rod is fixedly installed at one end of the first lead screw, a first supporting rod is arranged in the reinforcing cylinder, and the end, away from the first lead screw, of the fixing rod extends into the first supporting rod. The highway subgrade slope reinforcing device has the advantages that the highway subgrade slope reinforcing device is convenient to use and easy to operate, the contact area with soil can be increased, and the friction force and bonding force between the reinforcing device and the soil are improved.

The utility model provides a foundation pit water stop protective structure for foundation construction, which relates to the technical field of protective structures and comprises a bottom plate, two hinges are fixedly mounted on the outer surface wall of the bottom plate, and a support plate is fixedly mounted between the outer surface walls of the two hinges. According to the device, after the baffles are tightly attached to the interior of the foundation pit, underground water accumulated in soil can be discharged through a set of water pipes and enters the vertical interior below to be collected and treated in a unified mode, accumulated water on the inner wall of the foundation pit can be discharged in time, and the situation that the slope of the foundation pit is scoured and soaked by the underground water for a long time is prevented; the water tank can be rapidly taken down through the handle by operating the box to rotate the baffle and the rotating shaft, and the situation that the underground water in the water tank overflows, and consequently water is accumulated in the foundation pit is prevented.

The utility model discloses a vacuum screw head, relates to the field of drilling of soil layers or rocks, and solves the problem that when a single-pipe drilling tool is pulled out of a drill to extract a rock core, the suction effect in a drill hole reduces the rock core extraction rate. According to the technical scheme, the vacuum screw head comprises a connecting base and a sliding sleeve, the connecting base comprises a connecting shaft provided with a pipe cavity and a base fixed to one end of the connecting shaft, the other end of the connecting shaft is a connector used for being directly or indirectly connected with a drill rod, the connecting shaft is arranged in an inner hole of the sliding sleeve in a penetrating mode, and the sliding sleeve can slide along the connecting shaft. The outer side of the sliding sleeve is provided with an external thread which is used for being directly or indirectly connected with a single-pipe drilling tool. The connecting shaft is further provided with a first through hole and a second through hole, the first through hole and the second through hole are both communicated with a pipe cavity of the connecting shaft, the position of the sliding sleeve on the connecting shaft is automatically controlled through friction force between the sliding sleeve and the hole wall of the drill hole, opening and closing of the first through hole and the second through hole are correspondingly changed, and a flushing fluid conveying channel is correspondingly changed. The utility model can improve the core recovery rate.

The utility model provides a karst water-rich tunnel partition drainage structure which comprises N tunnel main holes arranged in an arrayed mode, a middle connecting channel is arranged between every two adjacent tunnel main holes for communication, N is an integer larger than or equal to 2, a drainage ditch in one tunnel main hole located on the outermost side is communicated with a drainage hole through a connecting branch hole, and the drainage ditch in the other tunnel main hole located on the outermost side is communicated with the drainage hole through a drainage branch hole. The middle connecting channel comprises a drainage channel and a pedestrian path, the drainage channel is communicated with the drainage ditches in the two adjacent tunnel main holes, and the pedestrian path is communicated with the two adjacent tunnel main holes. According to the drainage structure, water flow of all the tunnel main holes can be collected into the drainage hole to be drained, the risk of tunnel flood is reduced, and meanwhile the drainage channel and the pedestrian path are arranged together so that the construction difficulty can be reduced.

The invention relates to a self-adaptive spiral flow power generation device with damping vortex lines, and belongs to the technical field of hydroelectric power generation equipment. The device comprises a base fixedly arranged on a riverbed or seabed base; the stand column is of a cylindrical structure and is arranged in the center of the base, and right-handed damping vortex lines are annularly arranged on the incident flow surface of the stand column at equal intervals; the stand column is connected with a flow guide cover through a bearing platform, and the flow guide cover is of a variable-diameter round pipe structure and is coaxially provided with a flange, a contraction section, a diffusion section and a tail edge in the water flow direction. Threaded fins are arranged on the inner wall of the flow guide cover in the circumferential direction, and the generator is also located in the flow guide cover. A rudder is arranged outside the fairing, the whole rudder is of a wing-shaped structure and comprises a front rudder and tail rudders, all the tail rudders play a synergistic role through a connecting rod mechanism, the geometric attack angle of the fairing is automatically adjusted under the main flow velocity potential difference, the fairing is made to directly face the main flow all the time, and therefore the power generation efficiency and the overall performance of the device are improved. The device is suitable for being applied to water bodies of oceans, inland lakes, reservoirs and parks, and power is generated through water body flowing.

The utility model relates to a newly-built channel supporting structure close to important buildings, which comprises a plurality of cast-in-situ bored piles respectively arranged on two sides of a channel, a high-pressure jet grouting pile is arranged between every two adjacent cast-in-situ bored piles, a top beam is arranged at the top of each cast-in-situ bored pile, a channel bottom lining is arranged on the bottom surface of the channel, and the channel bottom lining is arranged on the bottom surface of the channel. Hidden beams are arranged at the positions, close to the cast-in-situ bored piles, of the two sides of the channel below the channel bottom lining, the hidden beams on the two sides are connected through hidden supports arranged at intervals, and stand column piles are arranged below the middles of the hidden supports and connected with the top beams through temporary vertical inclined supports. The hidden beams and the hidden supports are arranged at the bottom of the channel, the hidden beams and the hidden supports can serve as inner supports to reduce deformation of the side wall of the channel, safety of buildings around the channel is guaranteed, the water passing section is not affected, the length of the supporting piles can be shortened on the premise that safety is guaranteed, cost is saved, and the stand column piles are arranged to guarantee that when the channel is wide, the hidden supports are stably stressed. And the safety of the channel is not influenced.

The invention discloses a centrifugal casting device for ultra-high temperature alloy parts, which relates to the technical field of centrifugal casting, and comprises a conveying mechanism, on which a casting port is provided during casting, and the conveying mechanism can gradually push the liquid casting into the interior of the casting mold; a rotary driving device, as a driving component of the entire device, can simultaneously rotate the mold and a conveying pipeline in the conveying mechanism; in the invention, the rotary conveying pipeline is used to make the casting solution consistent with the rotation speed of the mold during the casting process, effectively avoiding the scouring of the molding sand layer inside the mold by the casting solution, and improving the service life of the mold; at the same time, a pushing component is used to ensure that the volume of the casting solution poured from the pouring port is consistent within a unit time, ensuring that the casting solution is evenly distributed in the mold, and improving the quality of the finished product; when the casting work is completed, the mold will increase the rotation speed to further improve the quality of the final product.

The utility model relates to a structure for protecting a current bridge pier in the center of a channel, which comprises a protected bridge pile, an upper bridge pier and a bridge, first support piles and second support piles are respectively arranged on two sides of the channel in rows, and a circle of third support piles are arranged on the outer contour of the bridge pile. A first top beam, a second top beam and a third top beam are arranged at the tops of the first supporting pile, the second supporting pile and the third supporting pile correspondingly, and a first hidden beam, a second hidden beam and a third hidden beam are arranged at the positions, close to the first supporting pile, the second supporting pile and the third supporting pile, of the two sides of the bottom of the channel correspondingly. The supporting piles on the outer side of the bridge pile can prevent water flow scouring, the straining beams, the first hidden supports and the second hidden supports are used for cooperatively protecting the protected bridge pile and the bridge pier, deformation of a bridge structure can be reduced to the maximum extent, the hidden supports and the hidden beams are located below a channel, and the size of an overflowing section of the channel is not affected; and the drainage function of the channel is considered on the basis of ensuring the safety of the bridge structure.

The system and method for preventing high-temperature corrosion of the boiler water-cooled wall provided by the present invention can spray the high-temperature and high-pressure air after the compressor is boosted and the heater is heated toward the water-cooled wall through the air duct, which can effectively penetrate the flue gas in the furnace and form a protective air film with good anti-corrosion effect on the water-cooled wall, and will not form a large degree of cooling in the furnace, thereby achieving the technical effect of improving the atmosphere near the water-cooled wall, preventing the water-cooled wall from high-temperature corrosion, and not affecting the performance of the boiler; the compressed air flow directed to the water-cooled wall can also purge the water-cooled wall to prevent the flame from scouring the water-cooled wall, and remove the accumulated dust and slag on the water-cooled wall; by setting a sensor to detect the concentration of oxygen, carbon monoxide and hydrogen sulfide in the atmosphere attached to the water-cooled wall, and then adjusting the opening of the regulating valve on the pipeline according to the detection value of the sensor through the controller, it is possible to monitor the atmosphere attached to the water-cooled wall online, and to reasonably optimize the amount of compressed air injected in real time, thereby improving the economy.

The present application relates to the technical field of erosion gully protection, and specifically discloses a cold region rainwater erosion gully protection structure, comprising: an erosion gully, a protection component, wherein the protection component is arranged on the inner side of the erosion gully, and a protection structure one, a protection structure two, a protection structure three and a protection structure four are arranged according to different slopes of the erosion gully to reduce the impact force of water flowing downward, thereby reducing the scouring force of the water flow on the erosion gully, wherein a non-woven fabric is arranged between a gabion stone cage and soil to play an isolation role, and a gravel layer can further disperse the impact force of the water flow, and the gabion stone cage is filled with gravel, thereby reducing the damage to the structure caused by the freezing environment, and enhancing the anti-erosion ability of the ditch, reducing the downward shear force of the water flow on the ditch, thereby more effectively preventing soil and water loss.

The utility model relates to the technical field of riverway side slopes, and discloses a riverway ecological landscape protection slope which comprises a riverway side slope, a branch protection slope used for supporting is arranged on the side slope of the riverway side slope, the branch protection slope is in a step shape, a protection piece used for protection is arranged on the branch protection slope, the protection piece comprises an assembly structure, and the assembly structure is movably connected with the branch protection slope. A protection structure is arranged in the assembly structure, the branch protection slope is formed by pouring concrete, planting grooves are formed in the branch protection slope, through holes are formed in the side walls of inner cavities of the planting grooves, water flowing grooves are formed in the top end of the branch protection slope and distributed in the branch protection slope in a linear array mode, and embedded threaded shafts are embedded in the branch protection slope. The embedded threaded shaft is movably connected with the assembly structure, the assembly structure comprises a square column, the interior of the square column is movably connected with the protection structure, and a threaded cylinder is fixedly installed at the bottom end of the square column. According to the utility model, not only is the safety of the river slope in use facilitated, but also the river slope can be supported.

The improved gas turbine nonmetal expansion joint heat insulation device comprises a first frame and a second frame, the first frame and the second frame are both connected with guard plates, the guard plates are annularly arranged, the two guard plates are arranged at intervals in the width direction of the guard plates, the first frame and the second frame are spaced to form a cavity, and a heat preservation layer is arranged in the cavity; a cushion layer is connected between the two protective plates and is arranged in an annular shape, an inner ring of the cushion layer is in an arc shape, the convex arc face of the inner ring of the cushion layer faces the heat preservation layer, and an outer ring of the cushion layer makes contact with the heat preservation layer. When the expansion joint is heated to expand, the first frame and the second frame are heated to expand, the first frame and the second frame are far away from each other, the two protection plates are far away from each other, and meanwhile the cushion layer is stretched and deformed, so that the gap between the two protection plates is reduced, and the heat preservation layer is prevented from being scoured and emptied as much as possible.

The present invention provides a flexible surface layer support structure system and construction method for loess areas, wherein a flexible surface layer support structure system for loess areas includes constructing a flexible anti-seepage layer on a loess slope, a mixed bonding layer for bonding arranged on the flexible anti-seepage layer, a fiber grid arranged on the mixed bonding layer, a plurality of anchor plates arranged evenly on the fiber grid for comprehensive fixation of the fiber grid and the flexible anti-seepage layer, and a lattice beam arranged at the upper end of the fiber grid. The construction method of the above system is also disclosed. In the present invention, the fiber grid has a certain flexibility, which can make the protective surface form a flexible base surface, and can be laid out according to the shape of the slope.

The utility model discloses a sandy soil side slope ecological protection structure, and belongs to the technical field of side slope protection. The sandy soil side slope ecological protection structure comprises a high-concentration W-OH water-resisting layer, soil fixing nails, planting soil and a low-concentration W-OH anti-scouring layer, the high-concentration W-OH water-resisting layer is arranged on the surface of a sandy soil side slope, the planting soil is arranged on the surface of the high-concentration W-OH water-resisting layer, and the low-concentration W-OH anti-scouring layer is arranged on the surface of the high-concentration W-OH water-resisting layer. The soil fixing nails are inserted into the sandy soil slope, one ends of the soil fixing nails are located in the planting soil, and the low-concentration W-OH anti-scouring layer is arranged on the surface of the planting soil. The slope protection structure has the beneficial effects that by arranging the upper W-OH layer and the lower W-OH layer with different concentrations, the rainwater washing resistance of planting soil on the surface of the slope can be improved, the water retention performance is achieved, the survival rate of plants in the planting soil and the greening effect are improved, the integrity of the slope and a protection structure system is improved by arranging the soil fixing nails on the surface layer of the slope, and the slope protection structure is suitable for being popularized and applied. And the slope supporting effect is effectively improved.

The utility model belongs to the technical field of roadbed protection, and discloses a roadbed protection and drainage integrated structure which is characterized in that the roadbed protection and drainage integrated structure comprises a side slope and a plurality of water collecting grooves formed in the side slope, and filter screens are vertically and fixedly installed at the bottom of the side slope and one sides of the water collecting grooves; two vertical plates are vertically and slidably connected into each water collecting tank, a top plate is fixedly mounted at the tops of the two vertical plates in each group, rotating plates are rotatably connected to the bottoms of the top plates, and tension springs are rotatably connected between the rotating plates and the corresponding vertical plates. Sediment carried by rainwater is intercepted by the filter screen when passing through the filter screen, so that the silt entering the water collecting tank is reduced, the cleaning frequency is reduced, in addition, the rainwater impacts the rotating plate after penetrating through the filter screen, the rainwater completely falls into the water collecting tank through flow guide of the rotating plate, the situation that the rainwater still scours a side slope located below after being filtered is avoided, and the cleaning efficiency is improved. And the drainage effect is better achieved.

The utility model provides a kind of splicing type double-wall corrugated pipe, including corrugated pipe structure, it includes corrugated pipe body, the corrugated pipe body is set to arc, the inside of the corrugated pipe body is provided with baffle, the quantity of the baffle is set to multiple, multiple the baffle equidistant distribution in the inside of corrugated pipe body, the outer wall of the baffle is provided with reinforcing rib.The utility model design is reasonable, by the arc of two double-wall corrugated pipes needed in advance to produce corrugated pipe structure, the corrugated pipe structure is connected with two double-wall corrugated, the corrugated pipe structure of arc shape set in advance can reduce the reset of corrugated pipe structure in installation process, to reduce radial shear force, torsional load and axial tensile and compression force, while the baffle and reinforcing rib set in the inside of corrugated pipe body can avoid liquid when flowing through arc-shaped corrugated pipe body, avoid liquid long time to flush the side of corrugated pipe body.