157 results about "Rubble" patented technology

The invention relates to a debris flow gully slope protection structure, and relates to the technical field of water conservancy projects. Multi-stage counter-slope terraces are arranged on the slope surface of the debris flow gully slope from the bottom end to the top end, each terrace structure comprises a terrace surface, ridges and a terrace ditch which are arranged upwards at intervals along a contour line, each layer of counter-slope terrace is separated by using a mortar rubble retaining wall as the ridge, the terrace surface is covered with soil by using a slope native soil layer, and the terrace ditch is connected with the ridge of the next stage of terrace by adopting a mortar rubble material. The field surface has a reverse slope inclination angle of 5-10 degrees, and crops can be planted on the field surface. The field ditches are communicated with main drainage ditches on the two sides of the terrace along the contour line downwards, and metal gates are arranged at the joints to control water flow, are closed when water storage is needed and are opened when water drainage is needed. The structure can effectively reduce the material, construction and maintenance cost, has high debris flow resistance, can stabilize the debris flow channel slope, reduces the water and soil loss of the slope, plays a role in terrace water storage and drainage, and further protects and promotes the growth of crops.

The utility model relates to a high-pressure jet grouting cutoff wall clay core wall earth rock cofferdam construction structure which comprises the following steps: S1, surveying and lofting by a surveying ship, and determining a block stone throwing and filling area; s2, rubble embankment riprap filling and dynamic elevation re-checking are carried out; s3, filling construction of a clay core wall in a central area; s4, construction of the high-pressure jet grouting expansion diaphragm wall; and S5, anti-seepage construction of the composite geomembrane of the upper slope section is conducted. According to the construction method of the clay core wall earth rock cofferdam of the high-pressure jet grouting cutoff wall, the construction speed is high, the anti-seepage effect is good, and the construction technical defects that in the construction process of an existing deepwater earth rock cofferdam, the riprap precision is low, the high-pressure jet grouting cutoff wall leaks slurry, the anti-seepage effect of an upstream slope is poor and the like are overcome; the construction method has the construction advantages of high stability, high efficiency, high benefits and the like during implementation, and the technical benefits are remarkable.

The invention relates to the technical field of tunnel engineering geological disaster prevention and control, in particular to a tunnel construction safety control method based on compression-torsion fault classification. Comprising the following steps: S100: according to engineering geological characteristics, dividing a compression-torsion fault into an anhydrous broken type: a fault broken zone is mainly fault rubble, the water yield is poor, and the risk is collapse and chipping; for the water inrush type, the fault fracture zone is high in water-rich property, and the risk is an inrush accident; according to the water quantity change type, one disc of the fault is a water-resisting layer, the other disc of the fault is a water-permeable layer, and the construction risk changes along with the construction direction; s200, the type of the compression-torsion fault is identified on site according to the characteristics of the tunnel face of the compression-torsion fault; s300, according to the fault classification result in the step S100 and the field identification type in the step S200, selecting a matched advanced forecasting method to carry out advanced geological forecasting; and S400, construction protection is conducted according to the different types of compression-torsion faults. According to the method, the corresponding construction measures are formulated by identifying the type of the compression-torsion fault, the construction risk is effectively reduced, and the tunnel construction safety is ensured.

The invention discloses a rubble retaining wall operation system under complex working conditions and a construction method thereof, and the system comprises T-shaped pre-buried steel pipes which are pre-buried in retaining wall drain holes, reinforcing connecting plates which are respectively connected with the two T-shaped pre-buried steel pipes at the lower part of a retaining wall, and I-shaped steel which is arranged on the reinforcing connecting plates, the angle adjusting unit, the scaffold board and the protection unit are arranged on the I-shaped steel, and the length-adjustable flower basket pull rod is arranged between the top of the I-shaped steel and the T-shaped embedded steel pipe on the upper portion of the retaining wall in a hinged mode. The system further comprises a terminal control device and an intelligent construction monitoring sensor. Angle, pressure and displacement data of the scaffold board are collected through the intelligent construction monitoring sensor and transmitted to the terminal control device; the control device controls the angle adjusting unit and the flower basket pull rod to automatically adjust according to the data so as to adapt to retaining wall operation of different angles, and automatic control and monitoring of the rubble retaining wall operation construction process under the complex working condition are achieved.

To provide a columnar structure demolition method, which is a demolition method for a columnar structure on the inner side of a double structures in which two hollow columnar structures are doubly formed, and does not require work of cutting and crushing at a high place like a top end part of the columnar structure and prevents rubble generated by cutting and crushing from dropping.SOLUTION: A columnar structure on the inner side is demolished by repeating a step to cut a bottom end of the columnar structure on the inner side and a step to lower the columnar structure on the inner side while supporting load of the columnar structure on the inner side by a lifting machine installed on a top end of the columnar structure erected on the outer side of the columnar structure on the inner side.SELECTED DRAWING: Figure 6

The invention relates to an apparatus and to a method for removing dust at a rubble pit (10). At the rubble pit (10) there is at least one delivery point (14) for positioning a delivery apparatus (16) for filling the rubble pit (10) with bulk material. The delivery point (14) adjoins a first edge portion (18) of the rubble pit (10). Along the first edge portion (18) there is a first suction-extraction assembly (24) which has a row of one or more suction-extraction openings (26). Along an oppositely situated second edge portion (28) of the rubble pit (10) there is a second suction-extraction assembly (34) which has a row of one or more suction-extraction openings (26). Above the rubble pit (10) there is a fan (42) for generating an air flow (L) in the direction of the rubble pit (10).

The invention belongs to the technical field of gravel ridge detection, and relates to a gravel ridge elevation detection system and method. The system comprises a detection rod, a driver, a pull rope sensor and a measurement and control module, the detection rod is arranged on the side, perpendicular to the length direction of the gravel ridges, of the gravel throwing pipe and is parallel to the gravel throwing pipe. The distance between the center of the detection rod and the center of the gravel throwing pipe is equal to the distance between the center lines of every two adjacent gravel ridges. When the riprap pipe lays and levels the current gravel ridge, the detection rod is located above the previous gravel ridge and is driven by the riprap pipe to move in the length direction of the previous gravel ridge, the driver drives the detection rod to move up and down repeatedly, and the detection rod moves downwards to the bottom end of the detection rod to make contact with the top face of the previous gravel ridge every time. The pull rope sensor transmits displacement data of the detection rod when the detection rod moves downwards each time to the measurement and control module for processing, and elevation values of a plurality of detection points of a previous gravel ridge are obtained. According to the invention, the elevation of the previous gravel ridge can be detected while the current gravel ridge is constructed by the riprap pipe, and the elevation detection precision of the gravel ridge is obviously improved.

The present invention discloses a tailings dam constructed with the aid of mining waste rock and a construction method thereof. The flood diversion dam includes a gravity dam body cast with rubble stone concrete and a back-pressure platform. The back-pressure platform is filled with mining waste rock. The back-pressure platform is constructed on the downstream side of the gravity dam body, and the back-pressure platform is arranged in contact with the inclined surface of the downstream side of the gravity dam body. The back-pressure platform spanning the entire riverbed of the present invention can significantly improve the overall stability and safety of the flood diversion dam, effectively control the uneven settlement caused by the gravity dam on the weak covering layer foundation, greatly reduce the risk of dam body cracking, and prevent the gravity dam covering layer foundation from deep shear overall instability and damage. The platform filling construction of the present invention keeps rising synchronously with the gravity dam body, and the back-pressure platform is used to build the access road to the warehouse during the construction period, which effectively solves the problem of transporting tens of thousands of cubic meters of rubble stone into the warehouse during the gradual casting and rising process of the rubble stone concrete gravity dam.

The utility model discloses an asphalt pavement self-drainage structure, which particularly relates to the technical field of road engineering, and comprises a foundation layer, a broken brick layer and a cement layer which are sequentially arranged on the foundation layer, a rubble layer paved above the cement layer and an asphalt layer paved above the rubble layer, the rubble layer extends out of two sides of the asphalt layer, the broken brick layer and the cement layer, and main drainage grooves are formed in the two sides of the gravel layer correspondingly. According to the asphalt pavement self-drainage structure provided by the utility model, the gravel layer and the asphalt layer are paved on the original cement layer, so that rainwater partially permeates when falling onto the asphalt layer, and is drained towards two sides along the cement layer through the permeation of the gravel layer; rainwater on the upper portion of the asphalt layer is discharged towards the two sides of the asphalt layer and flows into the main drainage groove through the gravel layers on the two sides of the asphalt layer to be collected and discharged, then the rainwater is guided to flow into the main drainage groove to be collected under the condition that an original cement layer is not damaged, and the rainwater discharging effect is improved.

The invention discloses a construction method of a permafrost block stone dynamic compaction replacement composite foundation. The construction method comprises the following steps: step 1, a project construction preparation stage; secondly, a dynamic compaction scheme is designed; 3, surface layer freezing breaking and drainage system construction; step 4, preparation before dynamic compaction construction; step 5, guide hole construction; sixthly, dynamic compaction construction is conducted; step 7, construction recording; step 8, acceptance assessment and result archiving; and ninthly, quality, safety and environmental protection control in the construction process is conducted. The invention innovatively provides a three-stage reinforcing process of'guide hole dumping of block stones, dynamic compaction and full compaction ', a replacement body with a drainage function is formed by prefabricating guide holes and filling hard rubbles and broken stones with good gradation, a soft soil layer is effectively replaced and compacted, and a composite foundation with excellent bearing performance is constructed.

The utility model discloses a double-pile type L-shaped embankment structure which comprises pile foundations, a concrete cushion layer, an L-shaped wall body, handrails, a broken stone cushion layer and grouted rubble. The pile foundation is driven into an original embankment foundation, the concrete cushion layer is laid on the original embankment foundation, the L-shaped wall body is arranged on the concrete cushion layer, the upper end of the pile foundation penetrates through the concrete cushion layer into the L-shaped wall body, the side, close to a riverbed, of the L-shaped wall body is connected with the broken stone cushion layer, and the broken stone cushion layer is arranged on the riverbed. The rubble hardcore is provided with grouted rubble; backfill soil is arranged on the side, away from the riverbed, of the L-shaped wall body, and a road is arranged on the backfill soil; and the handrails are arranged on the L-shaped wall body. The double-pile type L-shaped embankment structure provided by the utility model aims to overcome the existing defects, is stable in structure, convenient to construct and low in manufacturing cost, and ensures the protection function of the embankment.

The invention relates to a foundation bed provided with an immersed tunnel inclined self-silt-discharging furrow, which comprises a foundation trench, a block stone layer and a rubble layer, the rubble layer is provided with a furrow (3) and a ridge platform (4), the furrow (3) comprises two side slopes, the surfaces of the two side slopes are called side slopes (6), and the foundation bed is characterized in that the position, close to the middle and lower than the ridge platform (4), on the furrow (3) is a furrow starting point, and the ridge platform (4) is arranged on the furrow (3). Two furrow end points are arranged at the two ends of the furrow (3) respectively, a middle slope from high to low extends from the furrow starting point to each furrow end point, and a front inclined plane (5) is formed on the surface of each middle slope; the shapes of the side slopes (6) of the two side slope surfaces are determined according to the middle slope; and in the silt squeezing process of the immersed tube, silt returning objects at the bottom of the immersed tube flow out of the bottom of the immersed tube along the two front inclined planes (5). The invention further provides a design method of the foundation bed.

The invention discloses an ecological slope protection method based on concrete hexagonal blocks, which realizes the double targets of slope stability and ecological restoration through a five-in-one technical system of grouted rubble footing, original soil compaction, nutritional non-woven fabric laying, concrete hexagonal block construction and a vegetation restoration system. And quality control and acceptance: regularly checking footing settlement, non-woven fabric lap joint, hexagonal block flatness and the like, monitoring the vegetation recovery effect by aerial photography of an unmanned aerial vehicle, detecting the structural stability, evaluating the vegetation coverage rate and the like. According to the method, standard hexagonal block prefabricated parts are spliced to form a grid framework, nutrient soil is filled in the grid framework, turf or aquatic plants are planted in the grid framework, a double-reinforcing structure of a grouted rubble coping and footings is matched, water and soil loss is effectively prevented, nutritional non-woven fabric is innovatively adopted as an ecological transition layer, the functions of water retention, fertilizer retention and scouring prevention are achieved, and the ecological effect is good. The in-situ soil compaction technology is matched to improve the bearing capacity of the base, the vegetation survival rate is high, and the method is suitable for various slope treatment projects such as rivers, reservoirs and roads.

The invention discloses a green recovery ecological restoration method for a mine goaf, and relates to the technical field of ecological restoration. Rock surface treatment is firstly carried out, the exposed rock surface of a mine is cleaned, and broken stones are prevented from falling off during construction; then, regreening planting is carried out, and seedling transplanting is carried out on the reconditioned rock surface; and then vegetation maintenance is carried out, the planted seedlings and the sown grass seeds are maintained, and the vegetation can root and germinate. According to the method, through vegetation reconstruction and ecological restoration, surface coverage is rapidly restored, water and soil loss is reduced, geological disaster risks such as landslide and debris flow are effectively restrained, and the life and property safety of the mining area and surrounding residents is prevented from being threatened; the hyperaccumulator can also be used for purifying soil heavy metal pollution, and is matched with vegetation to adsorb dust and regulate microclimate, so that the regional air quality and ecological environment are remarkably improved; meanwhile, the regreening mining area can be transformed into an ecological park, a carbon sink forest or an agricultural base, and the land value is increased.

The utility model provides a rammed earth wall corner reinforcing stone improvement structure which comprises a rammed earth wall body, an attachment gauze element, a bonding concrete layer, a protective base layer block, an attachment layer and decorative rubble stone, the attachment gauze element is fixedly installed on the surface of the rammed earth wall body in an attached mode, and the surface of the attachment gauze element is coated with the bonding concrete layer. The protective base layer block is adhered to the surface of the adhesive concrete layer and is fixedly connected with the rammed earth wall body; the adhesion layer is coated on the surface of the protective base layer block, and the decorative rubble is adhered to the surface of the adhesion layer; due to the arrangement of the protective base layer block and the decorative rubble stone, the structure is high in pulling strength, strong in anti-scouring capacity, attractive in appearance and high in construction efficiency, and the quality is convenient to control.

The utility model discloses a high-pressure karst water-rich large section highway tunnel drainage and pressure reduction device, which comprises pressure reduction assemblies arranged along the axis of the tunnel in a mirroring manner and a drainage unit communicated with the two pressure reduction assemblies, the drainage unit is used for draining flowing water generated by the two pressure reduction assemblies, and each pressure reduction assembly comprises a pressure control unit, a pressure control unit and a pressure control unit, the pressure control unit comprises a gravel blind ditch arranged at the position of a tunnel wall foot and extending in the direction away from the axis of the tunnel and a water gathering pipe arranged in the gravel blind ditch. The end, close to the tunnel, of the water gathering pipe is connected with a water pressure valve. The stabilizing unit comprises a plurality of positioning ribs evenly distributed on the peripheral side of the water pressure valve and a plurality of obliquely-arranged locking anchor rods, and the ends, away from the water pressure valve, of the positioning ribs and the ends, away from the water pressure valve, of the locking anchor rods are deeply buried in the rock stratum through concrete; water pressure can be released intelligently according to the water pressure condition, drainage is started automatically when the water pressure reaches a certain degree, the threat of the water pressure in a rock stratum to a tunnel lining structure is effectively reduced, and the lining structure is prevented from being broken down and damaged due to too high water pressure.

The invention discloses an offshore pile foundation excavation construction method and equipment based on zoning delayed blasting, and relates to the field of blasting construction, the method comprises the steps that in an erected drilling machine platform, a blast hole array is drilled to a preset elevation according to a preset position; the slotting holes, the caving holes and the contour holes are charged in a differentiated layered charging mode; segmental delayed detonation is conducted, specifically, a slotting hole drainage cartridge bag is detonated firstly so that water on the upper portion of a slotting rock mass can be discharged, and an orifice rock mass is broken; then, upper and lower rock breaking cartridges of the slotting hole and cartridges of the caving hole and the contour hole are sequentially detonated in a delayed mode; blasting gravels generated in the detonation process are removed, and the pile foundation steel pipe is sunk to the designed elevation; and concrete is poured into the pile foundation steel pipe to form the offshore pile foundation. According to the method, the deepwater high-pressure limitation is reduced through the detonation drainage process and the segmented delayed detonation process, the efficiency of layered rock breaking and energy directional release is improved, and then the blasting effect and the slag removal efficiency of offshore pile foundation excavation construction are improved.

The invention relates to the technical field of RFID antenna reliability testing, in particular to an RFID antenna reliability testing device and method, and the testing device comprises a test board, an installation simulation mechanism, a conveying mechanism and static pressure load testing equipment. According to the invention, through the soil in the soil storage tank, the broken stones spread on the surface of the RFID antenna and the conveying belt for supporting the RFID antenna, and through introducing the gas with set temperature and humidity into the through hole, the installation environment of the RFID antenna during actual installation is simulated, and the compressive property of the RFID antenna is detected in cooperation with a static pressure load test device; therefore, a test result which is more practical can be obtained. The rubble is automatically spread on the surface of the RFID antenna through the rubble spreading part before each test, the rubble and soil are automatically separated from the RFID antenna after the test is finished, manual spreading and cleaning are not needed, and the complexity of test operation is not increased while it is guaranteed that the test condition conforms to the actual installation environment.

The application provides a brick-concrete complex structure reinforcing method, and belongs to the technical field of building construction. The brick-concrete complex structure reinforcing method comprises the following steps: erecting support in the interior and middle position of the brick-concrete complex structure, excavating the added foundation contour of the brick-concrete complex structure, releasing the foundation cutting line and adding the outer contour line of the foundation, chiseling away the strip foundation and the rubble foundation by using the static cutting mode, installing the design drawing reserved pile hole on the brick-concrete complex structure, fixing and connecting the vertical main reinforcement of the buttress column with the structural reinforcement on the brick-concrete complex structure, opening the shear key hole, fixing and connecting the ring beam ring reinforcement with the original wall body of the brick-concrete complex structure, fixing the buttress column and the beam on the brick-concrete complex structure in sequence, and pouring the concrete. The method can solve the problem that the existing reinforcing method of the brick-concrete complex structure greatly disturbs and damages the wall to be reinforced and does not change the stress mode of the original structure form.

The utility model discloses an ecological green gravity type retaining wall which comprises a gravity type retaining wall cast-in-place wall body, a prefabricated retaining structure and planting soil, the gravity type retaining wall cast-in-place wall body is provided with a plurality of containing grooves in the longitudinal direction of the gravity type retaining wall cast-in-place wall body, and the opening direction of the containing grooves is forward. The multiple prefabricated soil retaining structures are all installed at the opening of the containing groove and vertically spliced to form a wall panel, the space formed by the prefabricated soil retaining structures and the wall panel is filled with the planting soil, each prefabricated soil retaining structure comprises a prefabricated soil retaining plate and a small soil retaining component, a plurality of prefabricated soil retaining plate preformed holes are formed in the prefabricated soil retaining plate, and the small soil retaining components are arranged in the prefabricated soil retaining plate preformed holes. And the small soil retaining component is used for sealing the preformed hole of the prefabricated soil retaining plate. The gravity type retaining wall has the advantages that the gravity type retaining wall is of a hollow structure, the hollow part is filled with soil to replace concrete or rubble concrete of a traditional gravity type retaining wall, the gravity type retaining wall is eco-friendly, and the work amount and the manufacturing cost are saved; green plants can be planted on the wall surface and the wall top of the gravity retaining wall, and the ecological greening effect is good.

The utility model relates to a terrace type debris flow gully slope protection structure, and relates to the technical field of water conservancy projects. The slope surface of the debris flow gully slope is provided with multiple stages of counter-slope terraces from the bottom end to the top end, the terrace structures are distributed at intervals from bottom to top along the contour line, each stage of counter-slope terrace is composed of a terrace surface, a masonry retaining wall and a drainage ditch, hierarchical separation is achieved through the retaining wall, and the terrace surface is covered with a slope native soil layer. And the field ditch is connected with the next stage of terraced field ridge by adopting a mortar rubble material. The field surface has a reverse slope inclination angle of 5-10 degrees, and crops can be planted on the field surface. The field ditches are communicated with main drainage ditches on the two sides of the terrace along the contour line downwards, and metal gates are arranged at the joints to control water flow, are closed when water storage is needed and are opened when water drainage is needed. The structure can effectively reduce the material, construction and maintenance cost, has high debris flow resistance, can stabilize the debris flow channel slope, reduces the water and soil loss of the slope, plays a role in terrace water storage and drainage, and further protects and promotes the growth of crops.

The present invention provides a method for repairing a rubble-type structure, and a rubble-type structure constructed using this repair method, which involves filling a hole formed by the detachment of a covering stone from the covering stone layer with a covering material of sufficient size, thereby firmly interlocking the covering material with the existing covering stones forming the inner surface of the hole. [Solution] A fabric formwork 6 that can expand into a three-dimensional shape is laid in a sheet-like state inside the hole 5 of the covering stone layer 3 that covers the base part 2. Next, fluid underwater concrete 7 is injected into the fabric formwork 6 to expand it, and the fabric formwork 6 expanded by the underwater concrete 7 is used as a covering material to fill the hole 5 and to enter between the existing covering stones 3a that form the inner surface of the hole 5.

The utility model provides a tensioning transition spring mechanism for an excavator, which belongs to the technical field of tensioning transition springs and comprises a mounting plate, a moving plate fixedly mounted on the right side of the mounting plate, a tensioning spring fixedly mounted between the mounting plate and the moving plate, and a protective mechanism arranged on the outer side of the tensioning spring. The protection mechanism comprises a protection plate, a mounting hole, a limiting hole, a buffer rubber ring, a fixing plate and a fastening bolt. Through the arrangement of the protection mechanism, a firm barrier is provided for the tensioning spring under the condition that normal work of the tensioning spring is not affected, the infestation of soil, rubbles and gravels on the spring is effectively resisted, the tensioning spring can work in a cleaner and safer environment, and the service life of the tensioning spring is prolonged. Faults caused by clamping stagnation or damage of foreign matter are greatly reduced, direct contact between the spring and the external environment is remarkably reduced due to the arrangement of the protection plate, and therefore abrasion caused by long-term friction is reduced.

The utility model provides a vibro-replacement gravel pile construction parameter control system, which belongs to the technical field of vibro-replacement construction and comprises a control cabinet, a current relay, a current wireless output device, a current wireless receiving device, a current indicating lamp, a time relay, a time wireless output device, a time wireless receiving device and a time indicating lamp. By controlling the vibration density current and the vibration remaining time of the vibro-replacement gravel pile construction in the filling vibration density pile manufacturing stage, the construction quality can be effectively guaranteed and controlled, the signal transmission time is shortened, an equipment operator can visually master various construction parameters, the construction efficiency can be improved, the construction time is shortened, the construction progress is accelerated, and the construction cost is saved.

The invention discloses a rapid installation technology of a nodular cast iron pipe for engineering. The rapid installation technology comprises the steps that firstly, preparation is conducted before construction; 2, pipeline laying; step 3, pipeline connection; step 4, fixing and supporting; 5, acceptance check and backfilling are conducted; according to the method, a DN50 drainage pipe is embedded in a groove in a high water level area to continuously pump water, a ballasting anti-floating pipe is immediately backfilled after a pipeline is in place, a gravel filter layer is laid at the bottom of a buttress, LOCTITE577 sealant is coated in a socket groove in a strong corrosion area, and three layers of polyethylene adhesive tape are wound on the outer wall of the socket groove, so that the engineering quality is greatly improved; the use and operation of materials such as cement and asbestos are avoided, the dust pollution of a construction site and the potential harm to the health of workers are reduced, and the construction safety environment is improved; the flexible connector is easy to detach, convenience is provided for overhauling and replacement of the pipeline or system modification, when leakage occurs, only the sealing ring needs to be replaced or the connector needs to be adjusted generally, and the repairing speed is high.

The utility model discloses a rubble transportation device for highway construction, which comprises a supporting seat, two universal wheels are respectively arranged at the left part and the right part of the lower end of the supporting seat, a feeding device is arranged at the left part of the upper end of the supporting seat, a storage device is arranged at the right part of the upper end of the supporting seat, and a water storage tank is arranged at the rear part of the upper end of the supporting seat. A dust falling device is installed at the upper end of the water storage tank, and a discharging hopper is installed in the middle of the right end of the supporting base. According to the broken stone conveying device for highway construction, the servo motor drives the driving roller, the driving roller drives the conveying belt on the outer surface of the driving roller to rotate between the first supporting frame and the second supporting frame, at the moment, a worker can easily shovel broken stone to a limiting frame on the conveying belt through a shovel, and the broken stone conveying device is convenient to use. The gravel can be lifted and fall into the storage box, water is atomized and sprayed to the gravel on the conveying belt through the spray heads, and therefore a large amount of dust is prevented from being generated during gravel feeding and discharging.

The invention discloses a construction method of a high-pressure jet grouting pile anchoring solidified soil-riprap combined scouring prevention and control structure. The structure is composed of a high-pressure jet grouting pile and a solidified soil-riprap prevention and control body from bottom to top, and natural attachment of a pile body, riprap and a scour pit seabed is achieved through solidified soil; during construction, through scanning positioning, single-pipe high-pressure jet grouting is adopted to pump solidified soil slurry to a certain depth of the bottom of a scour pit at specific positions in front of a scour pit pile and on the pile side, and an anchoring pile body is reserved; and filling the scour pit with solidified soil slurry to a certain height, then filling riprap until solidified soil overflows, and carrying out self-leveling. After the solidified soil is cemented and formed, a solidified soil-riprap prevention and control body anchored by the solidified soil high-pressure jet grouting pile is formed in the scouring pit; structural integration is achieved through the solidified soil, the anchoring effect is exerted in combination with the high-pressure jet grouting piles, the risks of riprap secondary scouring and solidified soil edge undercutting are effectively reduced, and the construction cost of the full-pouring solidified soil is reduced.

The utility model discloses a drop structure suitable for soft foundation riverbeds of medium and small rivers. The drop structure comprises upstream dry block stones, timber piles and downstream dry block stones, the timber piles are sequentially arranged in the width direction of a river to form a timber pile row, the two ends of the timber pile row are connected with river banks on the corresponding sides respectively, and the bottom of each timber pile is inserted into a riverbed. The upstream dry rubble is arranged on the upstream side of the timber pile row and is in contact with the timber pile row; the downstream dry rubble is arranged on the downstream side of the timber pile row and makes contact with the timber pile row. The ecological landscape structure is simple in structural form, convenient to be sequentially connected with side slopes on the two sides of a river channel, good in integration with the natural ecological landscape environment of the river channel, small in scouring influence on a riverbed, high in foundation deformation adapting capacity and capable of being recycled, and has certain water permeability and flexible adaptability. The soft foundation riverbed does not need foundation treatment, does not need construction diversion measures, and is low in cost, short in construction period and mature in construction technology.

The utility model discloses a device for quickly picking rubbles required by rubble concrete, which comprises a first steel pipe upright post, a second steel pipe upright post and a third steel pipe upright post which are sequentially and symmetrically fixed on the ground from front to back, four corners of a first screen and four corners of a second screen are fixed to the first steel pipe stand column and the second steel pipe stand column through cross-shaped steering buckles respectively, four corners of a horizontally-arranged third screen are fixed to the second steel pipe stand column and the third steel pipe stand column through cross-shaped steering buckles, the first screen is located above the second screen, and the second screen is located above the third screen. The first screen inclines forwards and downwards, the second screen inclines backwards and downwards, the side faces of the first screen and the second screen form a splayed shape, the hole diameter of the second screen and the hole diameter of the third screen are the same and smaller than the hole diameter of the first screen, and rubbles are loaded on the first screen through a loading machine. The rubbles meeting the standard size can be quickly picked out in a labor-saving mode, the working efficiency can be improved, construction operation is convenient, potential safety hazards are reduced, and the cyclic utilization rate is high.

The abutment back soft roadbed structure comprises a rubble structure layer, a broken stone hardcore, a first waterproof geotechnical cloth, a second waterproof geotechnical cloth, a light soil layer, an improved soil layer, a water stabilizing layer, a sleeper beam and a butt strap, a steel corrugated pipe is arranged in the light soil layer under the sleeper beam, a bottom cushion layer is laid under the steel corrugated pipe, and the bottom cushion layer is laid under the bottom cushion layer. The angle corresponding to the arc length of the portion, embedded in the middle of the bottom cushion layer, of the steel corrugated pipe is not smaller than 120 degrees. Annular sealing rings are arranged at the two ends of the steel corrugated pipe. The construction method comprises the following steps: a) riprapping; b) pouring the retaining wall; c) paving broken stones; d) laying a cushion layer; e) mounting a corrugated pipe; (f) sealing; g) laying geotechnical cloth; h) filling light soil; i) filling and improving soil; j) pouring the sleeper beam; and k) laying a butt strap. According to the roadbed structure and the construction method, the volume weight value of the steel corrugated pipe is close to 0, the requirement for the bearing capacity of a foundation is remarkably reduced, the upper load is dispersed to the surrounding soil body, and vertical sedimentation of the sleeper beam is reduced.