17results about How to "Settlement control" patented technology

The invention discloses a device for treating a vehicle jumping at a bridge head based on a negative Poisson's ratio inner hexagon reinforced soil, comprising a negative Poisson's ratio metamaterial structure, the negative Poisson's ratio metamaterial structure comprising a first negative Poisson's ratio metamaterial structure, the first negative Poisson's ratio metamaterial structure being buried at the slope surface where the road surface on both sides is connected to the abutment, the first negative Poisson's ratio metamaterial structure being formed by a uniform array of multiple negative Poisson's ratio unit cell structures, the negative Poisson's ratio metamaterial structure being buried at the slope surface where the road surface on both sides is connected to the abutment, the cross section of the negative Poisson's ratio unit cell being a hollow inner hexagon, the negative Poisson's ratio unit cell being composed of reinforced soil, and the inner cavity of the negative Poisson's ratio unit cell being filled with soil layers. The device has a simple structure and strong operability, and can cope with different differential settlements at the same time, thus having a wide range of applications.

The invention provides a load shedding structure used under a goaf high-fill embankment and a construction method. The load shedding structure comprises an arch-shaped base body structure and multiple layers of arc-shaped earthwork standard rooms arranged on the outer side of the arch-shaped base body structure. The arch-shaped base body structure comprises multiple layers of tamped soil formed by filling layer by layer in sequence from bottom to top, and the width of each layer of tamped soil is gradually decreased layer by layer from bottom to top. Geocells are laid on the top face and the two side faces of each layer of tamped soil; a porous box culvert is arranged in the middle of the tamped soil on the lowest layer; the space between every two adjacent layers of arc-shaped geocells and the space between the arc-shaped geocell on the innermost layer and the arc-shaped base body structure are filled with arc-shaped filling soil; filling is conducted on the outer side of the arc-shaped earthwork standard room on the outermost layer to form roadbed filling soil; an expressway roadbed is paved on the top surface of the roadbed filling soil; and a plurality of layers of horizontal geocells are laid in the roadbed filling soil close to the highway roadbed.

The utility model relates to a circulating water pipeline foundation structure for a soft soil foundation large-area soil filling field, which comprises a foundation structure body, and the foundation structure body consists of a plurality of settlement reduction composite sparse piles, a raft foundation, a reinforced concrete wing wall, an artificial soil arc sand foundation, backfill plain soil and a circulating water pipeline, the bottoms of the subsidence reduction composite sparse piles penetrate through the upper soft soil layer and are supported on the hard soil layer, the tops of the subsidence reduction composite sparse piles are embedded into the raft foundation, reinforced concrete wing walls are poured over the raft foundation, the space between the raft foundation and the reinforced concrete wing walls is filled with an artificial soil arc sand foundation, and a circulating water pipeline is placed in the artificial soil arc sand foundation. A gap is reserved between the circulating water pipeline and the raft foundation, and the backfill plain soil is used for filling other remaining excavation areas. The device is simple and reasonable in structure, pipeline sedimentation is reliably and effectively controlled, and powerful support can be provided for soil arc sand foundations on the two sides of the thoracic cavity of the pipeline, so that the operation safety of the circulating water pipeline is ensured.

The invention discloses a permafrost region high-speed railway rubble pile-slab structure roadbed and a construction method thereof, and relates to the technical field of railway roadbeds, the rubble pile-slab structure roadbed comprises a pile-slab structure pile foundation, a pile-slab structure joist, a pile-slab structure bearing platform plate, a rubble roadbed and a foundation bed surface layer, the rubble roadbed comprises a sand gravel lower cushion layer, a rubble layer, a gravel upper cushion layer, a medium-coarse sand inverted filter layer and a roadbed filling layer which are sequentially arranged from bottom to top. According to the method, the flaky and blocky stone roadbed is laid below the pile-slab structure bearing platform plate, and the purpose of actively protecting the permafrost is achieved; through cooperative bearing of the pile-slab structure and the slice and block stone roadbed on the lower portion, part of load is transmitted to the pile-slab structure pile body through the pile-slab structure bearing platform plate and the pile-slab structure supporting beam and then diffused to a base, and part of load is transmitted to the slice and block stone roadbed through the pile-slab structure bearing platform plate and the pile-slab structure supporting beam and then diffused to a foundation soil body. Therefore, the purpose of controlling the settlement deformation of the flaky stone subgrade is achieved, and the stability of the railway subgrade is ensured.

The invention provides an off-vein single-draw-shaft inclined mining combined low-waste efficient mining method, and relates to the technical field of mining. The mining method is based on stope construction of three stages, the stoping work of each layer access in each stage is realized by respectively constructing a first stope layer-changing connection gateway, a second stope layer-changing connection gateway and a third stope layer-changing connection gateway, and the stope construction of the second stage and the stope construction of the third stage are circularly carried out. Therefore, the draw shaft is directly connected with the stope through the stope layer-changing connection way, a segmented outside-vein roadway and a panel slope ramp do not need to be constructed, a large amount of accurate mining work amount and construction time can be saved, and the defects that in an upward drift filling mining method, the accurate mining work amount is large, and a large amount of segmented outside-vein roadways, panel slope ramps and other projects need to be constructed are effectively overcome; and the preparation time before ore block stoping is long, and after construction of the segmented outside-vein roadway is completed, a layer-changing connection roadway needs to be constructed from the segmented outside-vein roadway to the footwall of the ore body to cut the ore blocks, and then an access road can be constructed for mining operation.

The invention discloses a fully-mechanized caving filling mining method for a high-gas thick coal seam, and relates to the field of coal seam mining, a gas extraction filling roadway arranged in an overlying rock stratum is adopted to perform gas extraction and filling at the same time, and one-hole multi-purpose drilling is achieved, that is, a hole is drilled in an advanced working face to extract gas, and the gas extraction and filling are performed at the same time. And parallel operations of filling and mining are realized in a drilling and filling manner behind the working face, so that the mining efficiency is improved, and the problem that the mining efficiency is restricted by filling is solved. The gas is extracted through the drill hole, so that the gas concentration of the working face is reduced. Grouting and filling are conducted from top to bottom through the drilled holes, the filling efficiency is improved, and the problem that a traditional filling support is insufficient in height is solved; meanwhile, after the filling slurry is injected into the goaf, a filling body can be formed, namely, an integral supporting structure can be formed, roof contact can be achieved, the bearing performance is high, ground surface subsidence is controlled, and the problem of large-scale subsidence caused by fully mechanized caving mining is solved.

The invention discloses a foundation fixing anti-seepage pad for reinforcing and repairing a railway ballast track, a ballast bed structure and a ballast bed reinforcing and repairing method. The foundation fixing anti-seepage pad is of a micro-arch structure with the middle higher than the two sides in the track direction and comprises a bottom surface anti-seepage layer, a middle grid layer and a surface protection layer, and the bottom surface anti-seepage layer and the surface protection layer are compounded on the lower surface and the upper surface of the middle grid layer through a binding agent. And the middle grid layer is a fiber reinforced composite material grid. The foundation-fixing anti-seepage pad provided by the invention is combined with the actual condition of a railway, integrates reinforcement and seepage prevention, has better mechanical properties, high elongation and excellent long-term corrosion resistance, fatigue resistance and seepage resistance, has a stronger horizontal constraint effect on ballast particles, can obviously enhance the bearing capacity of a ballast layer, effectively slows down settlement, reduces the problems of frost boiling and the like, and has a good application prospect. The repair frequency is reduced, and reliable guarantee is provided for the safety and the stability of a railway system.

A seamless extended bridge structure suitable for soft soil areas includes a main girder, abutments, sunken approach slabs, UHPC (Ultra-High-Pressure Polymer) junction slabs, reinforced pavement layer, ground beam, and precast piles. The main girder is simply supported on supports, and adjacent main girders and the main girder and reinforced pavement layer are connected by UHPC junction slabs. One side of the sunken approach slab overlaps the back of the abutment, and the other side is fixed to the ground beam, which is supported by pile foundations. The reinforced pavement layer includes an expansion / contraction buffer zone above the sunken approach slab and a fixed zone above the ground beam; the expansion / contraction buffer zone is provided with expansion / contraction space by saw cuts, and a sliding layer is provided between it and the sunken approach slab. This scheme connects the bridge deck, UHPC junction slab, and reinforced pavement layer into a single structure using a steel mesh frame. The reinforced pavement layer absorbs the thermal expansion and contraction of the bridge, and the sunken approach slab controls uneven settlement at the bridge abutments, making it particularly suitable for soft soil areas. This disclosure also provides a construction method for a seamless extended bridge with a soft soil deck suitable for soft soil areas, reducing construction difficulty and ensuring performance.

This invention discloses a novel double-layer pipe roof reinforcement device and its implementation method. The pipe roof consists of two layers arranged in a staggered pattern. A movable sleeve is installed inside the pipe roof, and several steel nails that can pass through the pipe roof are fixed on the sleeve and inserted into the soil under grouting pressure. This effectively expands the reinforcement range of the pipe roof, enhances the self-bearing capacity of the surrounding rock, and achieves a significant reinforcement effect. Furthermore, this invention also discloses an implementation method for using this double-layer pipe roof reinforcement device, including: Step 1: Construction preparation; Step 2: Measurement and layout; Step 3: Installing measuring water pipes or sensors and installing impact drilling tools on the pipe roof steel pipes; Step 4: Installing the first section of steel pipe and starting the drilling rig; Step 5: After advancing 0.5m, verifying the construction parameters and adjusting them before continuing drilling; Step 6: Verifying the pipe roof construction parameters and checking the borehole formation; Step 7: Installing grouting pipes at the ends and filling the pipe roof steel pipes with cement grout; Step 8: Sealing the borehole.

The utility model provides a temporary supporting structure of a shallow-buried tunnel upper penetrating pipeline, and relates to the technical field of engineering construction. Comprising pipeline pile foundations, buttresses and pipeline supports, the pile foundations are arranged on the two sides of a pipeline and a tunnel, and the pipeline supports are arranged on the upper portion of the pipeline; the pipeline support comprises a triangular truss and a hanging bracket. The triangular truss is arranged by adopting a three-span continuous beam; the pipeline bracket is arranged along the pipeline; i-shaped steel cross beams are arranged between the pipeline supports and the buttresses; the pipeline support is composed of a triangular truss and a hanging bracket, and the bottom of the pipeline support is fixedly connected with the hanging bracket. The bottom end of the truss is vertically fixed on a horizontally arranged cross beam; the steel pipe pile foundation and the concrete buttress serve as a temporary supporting structure to provide a stable foundation, and fixation and adjustment of pipeline deformation are achieved through the truss and the hanging bracket.

This invention discloses an intelligent grouting control method and system for ultra-high water pressure shallow overburden shield tunneling, comprising: S1, real-time acquisition of time-series data during shield tunneling construction to form a multi-dimensional tunneling state feature vector; S2, defining the working conditions of the current construction section; S3, combining the defined working conditions with the multi-dimensional tunneling state feature vector to extract time-series features and predict the state, outputting the optimal control range of the target grouting parameters; S4, using the prediction results of the TCN-SSM model and real-time monitoring data to conduct risk assessment and calculate a risk score; S5, when the risk score reaches a preset warning threshold, adaptive optimization is performed to generate an optimal grouting control strategy; S6, real-time control of the shield tunneling grouting system is performed according to the optimal grouting control strategy, and the monitoring results after control are fed back to S4 to form a closed-loop control. This invention can improve the stability and safety of the shield tunneling synchronous grouting process.

The utility model provides an anti-settlement structure suitable for roadbed filling and excavation junction, which comprises an original ground, an excavation area and a filling area, the excavation area and the filling area are positioned above the original ground, a drainage dredging layer is arranged at the bottom of the filling area, and a group of drainage pipes are transversely arranged in the drainage dredging layer. A plurality of sets of drainage holes arranged at equal intervals are formed in the outer portion of the drainage pipe, tamping layers are laid on the drainage dredging layer, and a plurality of geogrids are arranged between the tamping layers. Through cooperation of the drainage and dredging layer, the drainage pipe, the drainage holes, the tamping layer, the geogrid and the buffer transition layer, the stability of the filling and digging junction of the roadbed can be improved, sedimentation can be effectively controlled, the tamping layer can ensure the compactness of a soil body, the geogrid enhances the anti-sliding and anti-deformation capacity of the soil body, the drainage and dredging layer can drain accumulated water in time, and the safety of the roadbed is improved. And the buffer transition layer reduces the impact of the vehicle load, so that the stability of the roadbed is guaranteed.

The present invention discloses a composite pile group foundation for rock-embedded bridges of unequal heights suitable for soft foundations and a construction method thereof, and relates to the technical field of bridge construction. The present invention comprises a cap, the bottom end of which is evenly fixed with pile foundations, a first shear wall is fixed between the tops of a plurality of pile foundations at the same end, a second shear wall is fixed between a plurality of first shear walls at the same side, and a grouting reinforcement groove is formed between the second shear walls at two adjacent ends. Through the coordination of the pile foundation, the shear wall and the cap, the composite pile group foundation for rock-embedded bridges of unequal heights fully utilizes the mechanical properties of the foundation bearing layer, and the rock-embedded depth of the pile foundation is reasonably set according to the soil strength of the bearing layer. At the same time, through the coordination of a plurality of pile foundations and the shear wall, better vertical and horizontal bearing capacity can be provided, and the rock-embedded depth of the pile foundation and the shear wall can be reasonably set according to the characteristics of the rock strata of the bearing layer.

The utility model discloses a shield tunneling machine cutterhead suitable for a large-particle-size boulder stratum. The shield tunneling machine cutterhead aims at solving the problems that in the large-particle-size boulder stratum, a cutterhead opening tunnel face collapses, the ground surface settles and a center cutter is eccentrically abraded. Comprising an inner ring beam, an outer ring beam, a plurality of spokes and a plurality of panels, the spokes and the panels are equal in number and arranged at equal angle intervals, the spokes and the panels are fixedly installed on the end face of the inner ring beam and the end face of the outer ring beam respectively, and a cutterhead opening area is formed between the spokes and the panels; at least one heavy tearing cutter is arranged in the center of each spoke, a plurality of hobs are mounted on the spokes along the central axis direction of the spokes, and a plurality of scrapers are mounted on the edges of the two sides of each spoke; at least one hobbing cutter is mounted on the panel; and a sealing plate is arranged on the outer ring beam between the spokes and the panel. The sealing plate is arranged at the opening of the cutterhead, the heavy tearing cutter is arranged in the center, tunnel face soil layer collapse and ground surface settlement on the upper portion and the inclined upper portion of the opening of the cutterhead can be prevented, and the eccentric wear risk of the center cutter is reduced.

The invention discloses a shield tunnel segment lining structure suitable for building a subway under a narrow road surface, comprising an A-type segment ring, a B-type segment ring and a middle plate, wherein the A-type segment ring, the B-type segment ring and the middle plate constitute an "8"-shaped integrated shield tunnel segment lining structure, wherein a plurality of circular arc-shaped A-type segments are circumferentially assembled into an excellent arc-shaped A-type segment ring, and a plurality of circular arc-shaped B-type segments are circumferentially assembled into an excellent arc-shaped B-type segment ring, and the two types of segment rings are assembled through a middle plate with a straight surface and triangular protrusions at both ends to form an "8"-shaped structural ring, and the structural ring meets central symmetry and axial symmetry, and a plurality of structural rings are longitudinally assembled to form an "8"-shaped integrated shield tunnel segment lining structure; the upper and lower integrated shield tunnel segment lining has a simple form, is easy to process and manufacture, is convenient to construct, has a strong integrity, is high in strength, has a good bearing capacity, can effectively control ground settlement, ensure the safety of surrounding buildings and structures, and improve construction efficiency.

The utility model relates to the field of concrete layering pouring, especially concrete vibration layering pouring device, including bottom plate, electric push rod and mould etc. have at least two electric push rods of bottom plate fixed connection, the telescopic portion of all electric push rods is fixedly connected with the mould in common, the mould is equipped with mould cavity. Through first cast concrete in the temporary storage cavity, and through vibration stick one and vibration stick two remove the bubble in the concrete in temporary storage cavity, and then make the concrete that removes the bubble completely change from being in temporary storage cavity to be in mould cavity, make the inside of mould cavity from below to above cast full remove the bubble completely concrete layer by layer, since the thickness of the concrete that each layer cast in the mould cavity is thin, can complete the uniform distribution of aggregate in lower height, help control the movement and settlement of coarse aggregate (such as stone) in each layer, thereby reduce aggregate separation phenomenon.

The utility model discloses a kind of cleaning devices for earth bunker pressure sensor, be set on earth bunker bulkhead, and earth bunker bulkhead is provided with earth bunker pressure sensor;Including flushing cavity, be set on earth bunker bulkhead, and flushing cavity is close to earth bunker pressure sensor side and is equipped with multiple water jet openings;Water supply component, be set on the rear end of earth bunker bulkhead and be communicated with flushing cavity.The utility model solves the mode of the existing cleaning earth bunker pressure sensor is more troublesome, possibly still can cause the problem of earth bunker pressure loss and surface subsidence, by setting flushing cavity and water supply component, operator can quickly, conveniently clean the muck covered by earth bunker pressure sensor.This device avoids earth bunker pressure loss when disassembling earth pressure sensor, can effectively control surface subsidence.