763results about "Embankments" patented technology

The invention relates to the technical field of earthwork compaction, and discloses a pipe ditch backfilling and tamping system based on excavator modification. The system comprises an earthwork condition dynamic sensing module which captures a bucket tooth track, a hydraulic oil cylinder pressure pulse and a soil mass vibration spectrum in real time and combines a historical database to construct a model to output a theoretical compaction degree curve; a multi-source compaction difference analysis module performs three-dimensional deviation detection on the theoretical curve and the actual settlement volume data to generate a construction grid-level compaction difference tensor; the defect area association mapping module inputs the tensor into a geological topology analysis network, generates a loose defect propagation path probability cloud chart by combining soil parameters and identifies weak sections; and the tamping strategy self-adaptive configuration module automatically sets operation parameters according to the cloud picture, activates high-precision monitoring on a high-probability defect section, and applies a dynamic excitation force test on adjacent grids, so that intelligent management and control of the backfilling and compacting process are realized.

The invention provides a working face limited narrow fertile groove flow state solidified soil backfill construction method, and belongs to the technical field of flow state solidified soil application construction.The method comprises the steps that a backfill area is divided into partition blocks not exceeding 10 m and backfill sections with the thickness being 1 m, then an optimal backfill path is designed, and a cross path network is established to guarantee the filling uniformity; a multi-branch pumping system is adopted to convey the flow-state solidified soil, and flow velocity and pressure parameters are calculated by applying a hydrodynamic equation set. Construction is carried out according to the alternate sequence of 1-3-5-7 and 2-4-6-8 through a jump type pouring method, and the slump of the mixture is intelligently monitored and controlled to be 180-240 mm. Through penetration type electronic compactness detection, the unconfined compressive strength within 28 days is finally 0.8-1.5 MPa, the accumulative settling volume is controlled within 10 mm, high-quality control over backfilling of the narrow fertilizer groove space is achieved, and the technical problem that uniform backfilling construction of the flow-state solidified soil is difficult to control under the condition that the narrow fertilizer groove space is limited is solved.

The invention belongs to the technical field of steel sheet piles, and discloses a steel sheet pile for compensating stratum loss during pile pulling and a construction method.The steel sheet pile comprises a plurality of steel sheet pile units, and each steel sheet pile unit comprises a plurality of steel sheet piles; the foundation pit sides of the steel sheet pile units are connected with a plurality of compensation bags, and grouting systems are arranged on the foundation pit sides of the compensation bags. The foundation pit side of the steel sheet pile is coated with viscous grease, the side, facing the steel sheet pile, of the compensation bag is coated with pressure-sensitive adhesive, and the compensation bag is temporarily connected with the steel sheet pile; the grouting system comprises a main grouting pipe, the bottom of the main grouting pipe is connected with a horizontal grouting pipe, the side, facing the steel sheet pile, of the horizontal grouting pipe is connected with a plurality of flow dividing pipes, and the flow dividing pipes correspond to the compensation bags. A vertical branch pipe is upwards separated from the middle position of the flow dividing pipe, and is connected with a grouting connector at the bottom end of the corresponding compensation bag; the tail end of the flow dividing pipe is downwards divided into an inclined grouting pipeline, and the inclined grouting pipeline faces the lower portion of the steel sheet pile. The technical problem that filling is not timely due to the fact that grouting pipes are installed to fill gaps after steel sheet piles are pulled out in the prior art is solved.

The invention provides a high and steep slope reinforcing system with a slope crest adjacent to a post-built municipal pipe gallery and a construction method of the high and steep slope reinforcing system. The reinforcing system comprises an original side slope lattice anchor supporting structure, a pipe gallery structure, a foam concrete backfill structure located on the side, close to the original side slope surface, of the pipe gallery structure, a row of newly-added anchor rods / cables constructed below the first row of original anchor rods / cables below the slope top, and a row of miniature steel pipe piles constructed below the outer side, close to the side slope surface, of the pipe gallery structure. A first row of anchor rods (cables) of an original removed side slope support are replaced by newly added anchor rods or anchor cables, and the whole steel pipe piles are located in the foam concrete to form a miniature pile retaining wall structure. The overall stability of the high and steep slope with the slope crest adjacent to the pipe gallery is greatly improved, and displacement of the slope crest adjacent to the pipe gallery is effectively controlled; the settlement of the slope crest adjacent to the pipe gallery is effectively controlled in a design and standard range; meanwhile, the foam concrete structure is used for filling the pipe ditch (groove), so that filling pressure can be reduced, and compactness and strength are guaranteed.

The invention provides a large-scale photovoltaic power station field construction earthwork balance and transportation path intelligent planning method, and relates to the technical field of photovoltaic power station construction, and the method comprises the steps: obtaining construction field topographic data, dividing grids, collecting soil physical characteristic data, determining an excavation sequence and process parameters, calculating the workload, and building an earthwork allocation scheme; monitoring a grid bearing state in real time, and when a threshold value is reached, marking an unloading prohibition area and selecting an alternative area; monitoring the stable state of the road section, marking as a temporary control area when the stable state is lower than a threshold, and screening a standby path; and dynamically updating the planning scheme based on the information. According to the method, the earthwork resources are optimally configured, the construction efficiency is improved, and the safety risk is reduced.

The invention discloses a waste pipeline filling material, a preparation method and an application method, the waste pipeline filling material comprises a composite waste curing agent and mucky soft soil; the composite waste curing agent is formed by compounding dry powder and water; the dry powder comprises slag powder, carbide slag and desulfurized gypsum. The waste pipeline filling material disclosed by the invention is prepared by completely adopting the solid wastes, namely the slag powder, the carbide slag and the desulfurized gypsum as the curing agent to cure the sludge soft soil, has the advantages of wide raw material source, simplicity in preparation, high strength, low cost and the like, can fully recycle the solid wastes, and is low in energy consumption, low in emission and suitable for industrial production. And urban waste pipelines can be effectively filled, surface collapse accidents caused by structural damage of the urban waste pipelines are avoided, and positive significance is achieved for the ecological environment and urban development.

The invention relates to the technical field of building construction, and discloses a backfill construction method in a restricted space, which comprises the following steps: S1, acquiring three-dimensional structure information of the restricted space, determining boundary conditions of a backfill area, and arranging a conveying system; s2, sensor data are arranged in a conveying system and a backfilling area, and the data are transmitted to a central controller; s3, based on the principle of material mass conservation, a mathematical model of backfill material conveying and diffusion is established; s4, on the basis of the optimal control theory, the optimal backfill material conveying flow is solved by taking minimization of the backfill material distribution error and the conveying energy consumption as targets; s5, comparing the optimal backfill flow with the actual flow measured by the sensor; and S6, the conveying system is disassembled, and the site is cleaned. According to the method, the flow characteristics of the backfill material in the limited space are described by constructing the conveying kinetic model and combining the material conveying equation and the diffusion equation, and accurate simulation and optimization of the conveying process of the backfill material are achieved.

The invention belongs to the technical field of bridge engineering, and particularly relates to a deepwater lock catch steel pipe pile cofferdam construction method which comprises the following steps: construction preparation: delimiting a steel pipe pile cofferdam area; drilling and groove milling are carried out along the steel pipe pile cofferdam area to form a cofferdam groove, and sandy soil is backfilled in the cofferdam groove; a guide device is lowered along the bored pile steel casing, and steel pipe piles are inserted one by one to form a steel pipe pile cofferdam; a plurality of inner supporting systems are assembled; a covering layer is excavated on the inner side of the steel pipe pile cofferdam to the designed elevation; underwater grouting is conducted on the inner sides and the outer sides of the steel pipe piles located in the cofferdam grooves; the multiple inner supporting systems are sequentially lowered to the designed elevation; a gap between each enclosing purlin structure and the steel pipe pile is checked; the bottom of the foundation pit is cleaned, water is pumped layer by layer, and concrete is poured between the enclosing purlin structure and the steel pipe piles till water pumping in the cofferdam is completed; the bearing platform / pier body is constructed, and backwater of the corresponding inner supporting systems is sequentially removed along with construction of the bearing platform / pier body till water flows out of the bearing platform / pier body; and dismantling the steel pipe pile cofferdam.

The invention discloses a river and lake sludge dewatering and curing ecological bank protection process. Ecological bank protection construction is achieved through in-situ resourceful treatment of sludge. The process comprises the following steps: firstly, pressing natural wood piles into the bottom of a bank slope to form a comb-shaped anti-sliding bent frame, and paving high-strength permeable geotextile pipe bags between the piles and the bank slope; bottom mud is extracted by adopting mud suction equipment, is modified by a flocculating agent and then is injected into a tubular bag in a layered manner, and gravity dehydration is completed by utilizing the permeable characteristic of tubular bag fabric; the tops of the pipe bags are backfilled with stacking materials for graded stacking, and solidification is accelerated through external pressurization to form a stable bank protection filling body; and finally, the surface layer is covered with planting soil, moisture-proof plants are planted, and the composite revetment with the permeation drainage function and the ecological function is constructed. Compared with a traditional technology, the technology effectively solves the problems of bottom mud outward transportation pollution and resource waste through triple synergy of geotextile tube bag gravity dehydration, natural timber pile stability enhancement, building body strength improvement through graded stacking and loading and the like, and the formed revetment has ecological restoration and landscape functions. The method is suitable for ecological restoration of rivers and lakes, wetland reconstruction and waterfront environment treatment, and has the comprehensive advantages of convenience in construction, environmental friendliness, economy and high efficiency.

The invention provides a high fill roadbed settlement prediction method, and belongs to the technical field of engineering construction.The method comprises the steps that firstly, a large test box interface test system is established, and a 4 * 4 sensor monitoring network is arranged on the interface of filler and a foundation soil layer; the influence of different parameter combinations on interface mechanical properties is researched through a parameter change experiment system, and a parameter database is established; obtaining actual measurement data of typical engineering and determining a calibration coefficient; establishing an interface element model, and obtaining an interface friction angle, cohesion and rigidity parameters; calculating the deformation of each layer by adopting a layered accumulation method; introducing a time effect correction factor to consider consolidation characteristics; the slip influence is evaluated through an interface slip test, and the prediction deviation caused by neglecting the interface effect in a traditional method is corrected; and finally, constructing a deep learning prediction model, and verifying prediction precision and reliability through actually measured data.

A side grip pile driver for driving elongated objects into a ground surface comprising: a body for attaching the pile driver to a working machine; a first and second jaw members each jaw member having a clamping interface for clamping onto the side of an object to be driven; and a driving means arranged to move at least one of the jaw members, wherein each jaw member has a jaw arms and a gripping head, wherein the jaw arm is attached to the body and the gripping head, the gripping head providing the clamping interface, the jaw arm being attached to the gripping head via an elastomer member; wherein at least one of the gripping heads of the jaw members comprises a vibrator device for vibrating the gripping head such that the gripping head is couplable to the object in vibratory engagement.

The invention relates to a cable protection pipe channel and a construction method thereof. The cable protection pipe channel is used for providing an arrangement space for the cable protection pipe combination body in the length direction of a cable and comprises two gravity type cement-soil walls, a foundation trench, a cushion layer, a backfill layer formed by a premixed flow state solidified soil fertilizer groove and a ground surface recovery layer. The two gravity type cement-soil walls are oppositely arranged and extend in the length direction of the cable, the foundation trench is formed between the two gravity type cement-soil walls and extends in the length direction of the cable, the cushion layer is laid at the bottom of the foundation trench, the cable protection pipe combination body is arranged on the cushion layer, and the backfill layer is filled in the foundation trench and completely covers the cushion layer and the cable protection pipe combination body. And the ground surface recovery layer is filled in the foundation trench and completely covers the backfill layer. The construction space can be reduced, waste of materials and resources is reduced, the construction difficulty is lowered, and potential quality hazards and potential safety hazards are reduced.

The invention relates to a green low-carbon foundation reconstruction technology on an old pile site and a construction method. The green low-carbon foundation reconstruction technology comprises the following steps that old piles which need to be pulled out and old piles which can be recycled are determined through pile foundation detection; in combination with the characteristics of a stratum and a pile foundation, an optimal pile foundation pulling-out technology is selected to pull out an old pile; mgO-based carbon sequestration soil is adopted for backfilling of the pull-out holes, and a large amount of CO2 is injected through a spiral breather pipe to conduct carbonization reinforcement on a backfilled body; according to the pile foundation configuration principle and the load distribution condition of the upper layer structure, the position of a new pile is determined, and the foundation reinforcing effect of a backfill body is fully exerted; site surface soil is cleaned, and new and old pile heads are cleaned; and finally, a cushion layer and a raft are constructed and poured, and foundation construction is completed. According to the construction method, old piles are reused, the number of driven new piles can be reduced, the foundation manufacturing cost is saved, the construction period is shortened, resource waste caused by pulling out the old piles is avoided, the influence on the environment is reduced, and the positive effects of absorbing industrial solid waste, storing CO2 and improving and reinforcing a soil body are achieved.

The invention belongs to the technical field of solid waste recycling and controllable low-strength material production, and particularly discloses a method for preparing a controllable low-strength material from lithium slag and shield muck. The controllable low-strength material with the fluidity larger than 170 mm and the 28d unconfined compressive strength of 0.3-8 MPa is successfully developed by taking the lithium slag instead of traditional cement as a cementing material, taking the shield muck as a fine aggregate and taking the quicklime as an alkaline activator and adding a polycarboxylic acid type high-efficiency water reducing agent to adjust the fluidity through reasonable proportioning, and the controllable low-strength material with the fluidity larger than 170 mm and the 28d unconfined compressive strength of 0.3-8 MPa is prepared. Under the condition that vibration is not needed, narrow construction areas can be automatically filled, and most backfill projects are met. The cement-free cementing material developed by exciting the lithium slag through the alkaline exciting agent can replace cement, the material cost is effectively reduced, on the other hand, a large amount of lithium slag and shield muck are secondarily utilized, solid waste recycling is promoted, environmental pollution is reduced, and high economic benefits and environmental benefits are achieved.

The utility model discloses a landfill rain and sewage diversion blocking structure, and relates to the technical field of landfill rain and sewage diversion blocking, the landfill rain and sewage diversion blocking structure comprises a slope and a valley-type refuse landfill arranged on one side of the slope, the valley-type refuse landfill comprises a non-landfill area and a landfill area, a groove is formed between the non-landfill area and the landfill area, and the slope is arranged in the groove. The non-landfill area is arranged between the groove and the slope, a concrete bottom plate is poured on the inner bottom face of the groove, a flow dividing blocking structure is arranged in the middle of the upper surface of the concrete bottom plate, and flow dividing channel structures are arranged on the left side and the right side of the flow dividing blocking structure. Through cooperation of the structures, rainwater accidentally flowing into the separation dam can be led out, the situation that rainwater in the separation dam overflows to damage the diversion blocking structure is prevented, and therefore the rainwater separation blocking effect of the diversion blocking structure is guaranteed, the amount of rainwater mixed into a landfill area is reduced, and then the sewage treatment amount is reduced; and the rain and sewage diversion blocking effect is improved.

The invention discloses a fluid-state curing regenerated mixture, a preparation method and application of the fluid-state curing regenerated mixture in rapid repair of highway subgrade water damage, and relates to the technical field of building materials, the fluid-state curing regenerated mixture comprises the following raw materials by weight: 12%-20% of a cementing material, 20%-40% of redundant soil, and 40%-60% of graded aggregate; the preparation method comprises the following steps: firstly, carrying out processes of sorting, impurity removal, crushing, screening and the like on the building solid wastes to respectively obtain graded aggregates and redundant soil with different particle sizes; then blending the crushed graded aggregate and redundant soil according to a proportion, and carrying out primary mixing to obtain a mixture; and finally, blending the mixture with a cementing material in proportion, adding water, and carrying out secondary mixing, so as to obtain the flow-state cured regenerated mixture. According to the flow-state curing regenerated mixture, building solid waste is used as regenerated aggregate, waste concrete, tiles and the like are converted into high-performance engineering materials through scientific proportioning and a curing process, and the resource utilization rate of the building waste is maximized.

The invention discloses a treatment method for preventing traceability erosion of a ditch head, and relates to the technical field of ecological treatment. Earth excavation is carried out, layer-by-layer slope cutting and order building treatment is carried out on the ditch slope from near to far away from the ditch head according to the preset gradient, and multiple stages of side slopes and multiple platforms are formed; earthwork backfilling is carried out, soil obtained after layer-by-layer slope cutting and step building treatment is stacked at the bottom of the ditch head, the soil stacked at the bottom of the ditch head is rolled to form a ditch channel, and the inclination angle between the ditch channel and the bottom of the ditch head ranges from 10 degrees to 15 degrees; soil covering and greening are conducted, soil covering is conducted on the channels, the multiple stages of side slopes and the multiple platforms through surface soil, multiple spruces are planted on the channels and the multiple platforms correspondingly, and high wheatgrass and ryegrass are sown on the slope surfaces of the multiple stages of side slopes in a mixed mode correspondingly; building a water retaining wall; and concealed pipes are arranged. In cooperation with water and soil conservation plant planting, the ditch bottom scour prevention and slope greening engineering is added, and a ditch head treatment mode integrating the landscape improvement function and the water and soil conservation function is formed.

The invention provides a hydraulic reclamation area storage yard foundation treatment construction method which comprises the steps that a treatment area is divided into a consolidated hydraulic reclamation sand area, a storage sand area and a new hydraulic reclamation sand area according to the formation time and compactness difference of strata, a three-dimensional drainage system is laid in the new hydraulic reclamation sand area and comprises a horizontal permeable gabion wall and a vertical drainage plate, and a gravity drainage channel is formed; the process of forming a drainage channel through vibroflotation and then carrying out dynamic compaction and densification is adopted in a consolidated area, the process of alternately implementing vibroflotation and dynamic compaction is adopted in a sand stockpiling area, the process of carrying out local vibroflotation reinforcement after layered dynamic compaction and pre-pressing is adopted in a new hydraulic reclamation area, and vibroflotation and dynamic compaction construction parameters are dynamically fed back and adjusted by monitoring gravel data. The foundation treatment problem of hydraulic reclamation areas formed in different years is solved.

The invention provides a high-fill foundation and filling body vertical stress-strain experiment system and an installation method, and belongs to the technical field of foundation engineering, the system is an experiment model needed for exploring a filling body original foundation stress-strain mechanism in high-fill site research, measurement of filling body original foundation stress-strain data is achieved, and the measurement accuracy is improved. The whole system specifically comprises a foundation experiment body, a filling body experiment body, a counter-force anchor pile, a dowel bar assembly, a counter-force beam, a sizing block body, a pressurization assembly and a stress strain induction measurement assembly, the loading capacity is controlled through a high-pressure hydraulic pump, and the counter-force anchor pile, the dowel bar assembly and the counter-force beam are all connected through cut flanges and high-strength bolts and are convenient to assemble and disassemble; the structure is stable, safe and reliable.

The invention discloses a dredged mud upper and lower part double-face combined vacuum consolidation drainage method, which comprises the following specific implementation processes: laying a horizontal sand bag containing a PVC (Polyvinyl Chloride) pipe and a vertical drainage pipe at the bottom of a cofferdam foundation pit to serve as a bottom drainage system, blowing and filling dredged mud in a layered manner, controlling the thickness and the water content of each layer, and when the water content of a soil body is lower than twice liquid limit, stopping drainage; starting the bottom vacuum water pumping device to perform preliminary water drainage, inserting straw bundles into the soil body through hollow pipes with bottom covers to form a vertical water drainage structure after the strength of the soil body meets the requirement, sequentially laying geotechnical cloth, a straw woven blanket, a PVC water drainage pipe network and a sealing film on the top to construct a top vacuum system, and finally synchronously starting the top vacuum water pumping device and the bottom vacuum water pumping device. The vacuum difference is controlled by adjusting the ventilation device, and upper and lower double-face combined vacuum consolidation drainage is achieved. The drainage consolidation of the dredged mud is effectively accelerated, the treatment efficiency is improved, and the drainage effect is enhanced through precise control over the vacuum degree and application of materials such as straw.

The invention relates to the technical field of compaction pile construction, and discloses a construction method of an along-track bar hammer stone breaking compaction pile made of site original soil and stones, which is characterized by comprising the following steps: S1, foundation treatment is carried out; s2, a foundation pile is formed; s3, a composite foundation is formed; and S4, manufacturing a mattress layer, and coordinating settlement difference. According to the construction method disclosed by the invention, the hammer body can be used for completing the construction of all working procedures of trepanning and pile forming of the pile body (trepanning, stone breaking, soil squeezing, hole forming, chambering and pile end bearing layer manufacturing; the combined action of one hammer with multiple purposes, one machine with multiple purposes and one method with multiple purposes is achieved, the combined hammer can adapt to various different geological conditions and the design requirements of different buildings and structures, and meanwhile various miscellaneous fill rocks existing on the site can be converted into various miscellaneous fill rocks. Various effects (original soil and stone bodies, a dynamic consolidation construction method, pile bodies with different strengths, soil bodies among the piles and the like) formed after treatment are combined together to form a raft-shaped high-strength foundation bearing layer.

The invention relates to a water and land construction rapid filling method suitable for a cofferdam with cohesive soil at a soil taking point. The water and land construction rapid filling method comprises the following steps of A, underwater throwing filling, B, overwater turning filling and C, land filling of a dam core. Water throwing and land throwing are combined, cofferdam forming is accelerated, inland river conventional equipment is adopted for overwater construction, construction organization is facilitated, adopted dredgers are backhoe dredgers and grab dredgers which are commonly used for earth cutting in inland rivers, and the ships are shallow in draught, convenient to transport in the inland rivers, free of weather influence, capable of working continuously, capable of saving the construction period, capable of reducing soil disturbance and convenient to throw and fill water. The overall stability of the cofferdam can be improved, earthwork balance is achieved, cost is saved, environment friendliness is achieved, and good social and economic benefits are achieved.

The invention discloses a buried pipeline backfilling structure based on arched foam light soil and a construction method, and belongs to the technical field of buried pipelines, the buried pipeline backfilling structure comprises a sand cushion layer, a pipeline, a first common backfilling soil layer, an arched foam light soil backfilling layer and a second common backfilling soil layer, and the sand cushion layer is arranged at the lower end of the pipeline; the first common backfill soil layer is backfilled around the pipeline, the arched foam light soil backfill layer is backfilled at the upper end of the first common backfill soil layer, and the second common backfill soil layer is backfilled at the upper end of the arched foam light soil backfill layer. The characteristics of low density, high strength, integrity and the like of the foam light soil are utilized, the arch-shaped backfill structure is arranged, a layered load reduction mechanism is effectively formed, pipeline stress is reduced, the deformation resistance is improved, meanwhile, the use amount of the foam light soil is reduced, and compared with a traditional uniform backfill mode, the method has better economical efficiency and engineering applicability.

The invention discloses a multifunctional multi-anchor plate pile wharf structure suitable for deepwater berth and a construction method thereof, belongs to the technical field of port engineering, and solves the problems that the section of a deepwater berth plate pile wall structure is too large, deformation control is difficult, and the synergism of an anchorage system is poor. The wharf structure comprises a front sheet pile of the front sheet pile wall structure and a front track beam arranged on the front sheet pile. The pull rod system is arranged between a pavement structure and a pool bottom elevation, at least two common layered pull rods and a multifunctional pull rod are sequentially arranged at intervals from bottom to top, one end of each common layered pull rod is connected to a front sheet pile, and one end of each multifunctional pull rod is connected to a front track beam. The anchorage system comprises at least two common layered anchorage bodies and a multifunctional anchorage body, the common layered anchorage bodies are correspondingly connected with the common layered pull rods, the multifunctional anchorage body is composed of a rear track beam and a rear track beam pile, and the rear track beam is connected with the other end of the multifunctional pull rod. The wharf structure is mainly used for deepwater berth wharf construction, multi-anchor support can be provided, and track beam displacement can be coordinated.

The invention discloses early-stage civil air defense engineering solid waste recycling backfilling equipment and method and a new material, and relates to the technical field of backfilling equipment, the early-stage civil air defense engineering solid waste recycling backfilling equipment comprises a mixing tank, and a backfilling unit is arranged at the discharging end of the mixing tank and extends into underground civil air defense engineering solid waste; the backfilling unit comprises a backfilling pipeline extending into the underground civil air defense engineering solid waste, the backfilling pipeline internally comprises at least one spiral blade used for conveying solid waste slurry, and the upper portion of the spiral blade is provided with a driving unit used for driving the spiral blade to rotate. The extensible assembly is arranged at the bottom of the spiral blade, the extensible assembly is provided with a plurality of guide rods extending towards the outer side, the guide rods extend towards the outer side, and the vibrating assembly is arranged at the ends, extending towards the outer side, of the guide rods. When backfilling is carried out, the backfilling pipeline extends into the underground civil air defense engineering solid waste, the guide rod extends outwards through the extensible assembly, the guide rod drives the vibrating assembly to extend to the outer side of the backfilling pipeline, and vibrating is carried out in the backfilling process; and the solid waste slurry can stably enter gaps of civil air defense engineering solid waste.

The invention discloses a barrel type foundation structure causeway closure opening sealing structure and a construction method thereof.The barrel type foundation structure causeway closure opening sealing structure comprises a barrel type foundation structure, a plurality of guide frames and a heightening barrel body, the guide frames are installed at the bottom of the heightening barrel body, and the lower portions of the guide frames are of an isosceles trapezoid structure and extend out of the bottom of the heightening barrel body; the lower part of the guide frame is matched with the cavity of the barrel type foundation structure; when the heightening barrel body is installed on the barrel type foundation structure, the guide frame can be clamped into a cavity of the barrel type foundation structure, the heightening barrel body and the barrel type foundation structure are connected into a whole through pouring concrete, the design is reasonable, the structure is compact, it is ensured that the heightening part and the foundation structure are accurately aligned, deviation is avoided, and the construction efficiency is improved. And displacement of the heightening barrel body in the specific direction is limited, shaking caused by water flow force is prevented, the heightening barrel body and the barrel type foundation structure are connected into a whole through concrete pouring, horizontal force and vertical force can be resisted, and the overall stability of the causeway closure opening sealing structure is improved.

The invention relates to the technical field of building construction, and provides a foam light soil construction method and a roadbed structure, the construction method comprises the following steps: excavating a foundation pit, cutting a slope at an old road slope on one side of an original roadbed, and digging steps and a base; a baffle is vertically arranged, a baffle foundation is poured on the other side, opposite to the steps, of the foundation pit, the baffle is vertically arranged, and a filling area is defined; and layered filling is conducted, specifically, after the baffles are erected, foam light soil is filled into the filling area in a layered mode based on the height of each filling layer. Through the arrangement, the vertical additional stress of high fill construction on a foundation can be remarkably reduced, the post-construction settlement problem caused by overlarge self weight of a traditional material is effectively relieved, meanwhile, due to the characteristics that the foam light soil is high in flowability and can be used for pumping construction, the operation process is simplified, dependence on large-scale compaction equipment is reduced, the construction period is shortened, and the construction cost is reduced. The environmental influence and the cost caused by excavation and transportation of earthwork are reduced, and the reliability and the economical efficiency of roadbed widening engineering are realized.

The invention discloses a preparation method and application of a compaction-free solid waste polymerization roadbed filler constructed by adopting a dump filling method, belongs to the field of high-value and large-scale utilization of solid waste building materials, and particularly relates to a preparation method and a construction process of the compaction-free solid waste polymerization roadbed filler (comprising construction waste and tunnel excavation fragments) constructed by adopting the dump filling method. Large-particle-size building waste fragments and an early-strength solid waste-based cementing material are polymerized through a throwing and filling method, compaction-free and vibration-free construction is achieved through the self-leveling and self-compacting characteristics of cementing material slurry, vertical layered pouring can be achieved, and high-valued and large-scale utilization of solid waste and engineering economy are both considered. According to the present invention, the self-leveling and self-compacting characteristics are provided, the characteristics of the slurry are obtained through the preparation method, the ratio design in the preparation method is important, and the experiment support is provided, such that the ratio design and the experiment process and data are required;

The invention discloses a construction method for repeatedly utilizing dredged soil waste. The construction method sequentially comprises the steps that a harbor basin is dredged in a striping and layering mode through a grab dredger, and dredged soil is conveyed to a self-propelled mud barge and conveyed to a cofferdam construction area; dredged soil is used for carrying out hydraulic reclamation on the bagged sand cofferdam, and a temporary cofferdam structure is formed; dredged soil is blown and filled into the cofferdam to form an island building construction platform; wharf pile foundation and trestle construction is conducted on the island building platform; foundation treatment and backfill construction of land roads and storage yards are synchronously implemented; dismantling the temporary cofferdam, and recovering bagged sand and dredger fill of the cofferdam; the recycled material is mixed with a curing agent to produce solidified soil for land area backfilling. The method solves the problems that earthwork generated by a dredging mode in the prior art is prone to causing waste of a large amount of resources, and the disposal cost is gradually increased along with site shortage, and has the advantage that dredging engineering and water area island building construction engineering can be combined, so that resource recycling is achieved.