20results about How to "Reduce excavation" patented technology

The invention discloses an abrupt slope mountain photovoltaic micro pile foundation construction method under complex geological conditions, and relates to the technical field of photovoltaic foundation construction. According to the method, in order to solve the problems that the slope of the abrupt-slope mountain land is large, the terrain is complex, large machines are difficult to operate, and the ecological environment is sensitive, the structural form of small-diameter pile groups and chamfered triangular bearing platforms is adopted, the heavy-load unmanned aerial vehicle hoisting technology is combined, and minimally invasive, efficient and green construction is achieved. The core of the method comprises the steps of construction preparation, measurement positioning, hole forming, reinforcement cage and bearing platform reinforcement installation, material transportation based on the heavy-load unmanned aerial vehicle, concrete pouring, maintenance and the like. The method is high in environmental adaptability, capable of overcoming 15-45-degree abrupt slopes and complex geological conditions and greatly reducing earth excavation and vegetation damage, high in structural bearing capacity and low in manufacturing cost, solves the problems that a traditional construction method is low in efficiency, serious in ecological damage and the like, and is suitable for mountain photovoltaic power station projects, particularly suitable for photovoltaic foundation construction of ecological sensitive areas.

This utility model relates to the technical field of welding construction platforms, specifically to a construction platform for welding the outer side of steel pipes on steep slopes. It includes an operating platform, a support mechanism, and connecting components. The top surface of the operating platform is constructed as an operating surface. The support mechanism includes at least two lattice columns, and the connecting components include several anchor rods. The anchor rods can provide a limiting connection to the bottom end of the lattice columns. The operating platform provides an operating surface for welding the outer circumferential seam of the pipe. Workers can stand on the operating surface at the top of the platform to perform welding operations at corresponding positions. Simultaneously, the support mechanism provides stable support for the operating platform. The support mechanism can be anchored to the slope surface by multiple anchor rods. The anchor rods can be fixed by drilling and implanting, utilizing the anchoring force of the deep soil and rock mass of the slope to fix the lattice columns. This helps reduce the amount of slope excavation and minimizes the impact of the construction platform erection on construction costs and schedule.

The application relates to a narrow-base tower deflection pile cap foundation. The application is suitable for the technical field of narrow-base tower foundation of power transmission lines. The application aims to provide a narrow-base tower deflection pile cap foundation. The technical scheme adopted by the application is as follows: a narrow-base tower deflection pile cap foundation comprises a cap buried below the ground, a connecting column structure vertically arranged on the top of the cap and used for connecting the tower leg of the narrow-base tower, and a group of inclined piles vertically arranged on the bottom of the cap, wherein the group of inclined piles is arranged correspondingly to the tower leg of the narrow-base tower and is eccentrically arranged, so that the bending moment caused by the partial horizontal load of the upper part can be offset.

This invention relates to the field of engineering construction technology, specifically a construction method for a tunnel on a high slope. The method includes: S01, excavating the top of the tunnel and providing slope support; S02, excavating the right side of the tunnel and providing temporary support; S03, excavating the left side of the tunnel and providing initial support, pre-anchor support, and temporary steel frame support; S04, pouring the left tunnel structure and bottom slab; S05, constructing temporary steel frame support and dismantling the existing temporary steel frame support; S06, constructing the right tunnel structure; S07, constructing ancillary structures such as drainage ditches, cable trenches, and road surfaces within the tunnel; S08, backfilling and counter-pressure at the top of the tunnel, constructing a top seepage-proof layer, drainage ditches, and landscaping. This invention reduces excavation volume, minimizes damage to the natural environment of the mountain, avoids slope deformation and instability caused by prolonged exposure, and ensures the safe and smooth progress of the project. It also avoids structural damage to the tunnel due to water accumulation and insufficient backfill compaction.

The utility model discloses a water delivery arrangement system, particularly discloses a water delivery arrangement system for relieving low-temperature water drainage, and belongs to the technical field of design and construction of water conservancy and hydropower engineering structures. According to the water delivery arrangement system for relieving low-temperature water drainage, the excavation work amount is remarkably reduced, and it can be effectively ensured that water with the relatively high temperature and the relatively sufficient flow can be taken at any time. The water conveying arrangement system comprises a water storage reservoir which is arranged on a main stream river channel through a river blocking dam, and is characterized by further comprising a branch ditch river channel, a water conveying pipeline and a water inlet tower arranged at the input end of the water conveying pipeline, the branch ditch river channel is communicated with the water storage reservoir, and the water inlet tower is arranged on the branch ditch river channel; the river bottom elevation of the branch ditch river channel is higher than the riverbed elevation at the corresponding position of the main stream river channel and lower than the dead water level elevation of the reservoir; in the water taking process, the water inlet tower obtains stored water in the reservoir area of the water storage reservoir layer by layer from top to bottom through the branch ditch river channel.

The application provides a setting method of an effective depth of a shock isolation trench. The setting method of the shock isolation trench is as follows: determining a shock influence range according to a connecting line of a region boundary line adjacent to a side of an existing building of a vibration source range and an angle point of an outer contour of the existing building, then determining a length of the shock isolation trench according to the shock influence range, then controlling the vibration source to move on the region boundary line adjacent to the side of the existing building of the vibration source range, and then determining an effective shock isolation effective depth of the shock isolation trench by monitoring a measured horizontal acceleration and a measured vertical acceleration at the angle point of the outer contour of the existing building and comparing the measured horizontal acceleration and the measured vertical acceleration with a standard horizontal acceleration and a standard vertical acceleration of the region during the moving process. The application considers the law of vibration propagation attenuation with distance and quantitatively digs the effective depth of the shock isolation trench, reduces the earthwork excavation of the shock isolation trench, reduces the construction cost, and effectively blocks the propagation of the vibration.

The utility model relates to a temporary supporting joint which comprises a plurality of vertical profile steel supports, a plurality of supporting base plates, a plurality of longitudinal connecting sleeves and a plurality of longitudinal connecting ribs. The supporting base plates comprise top base plates and bottom base plates which are in one-to-one correspondence, the top base plates and the bottom base plates are located in top surrounding rock and bottom surrounding rock at the intersection of the underground excavation air duct and the protective tunnel main body enclosure structure correspondingly, and the top base plates and the corresponding bottom base plates are located in the same vertical plane; the vertical profile steel support is arranged in the vertical direction, the horizontal section of the vertical profile steel support is in an I shape, and the top end and the bottom end of the vertical profile steel support are welded to the top base plate and the bottom base plate respectively. The longitudinal connecting sleeve is welded on the web plate, the longitudinal connecting rib is inserted into the longitudinal connecting sleeve, and the longitudinal connecting rib is arranged along the horizontal direction. According to the utility model, the air duct can be synchronously excavated on the outer side of the protective tunnel side wall, and the excavation and backfill work amount is reduced, so that the manufacturing cost is reduced.

The construction structure for adding underground floors to existing buildings based on the original pile underpinning includes a new pile foundation cap fixed to the original engineering piles, and frame columns located above the new pile foundation cap and attached to the original engineering piles. The new pile foundation cap includes a bottom cushion layer and a brick formwork set on the bottom cushion layer. The brick formwork on all four sides is fixed to the bottom cushion layer to form the space for pouring concrete for the foundation. It also includes circumferential steel members, a reinforcement layer, and water-swellable waterstops. The circumferential steel members are fixed to the original engineering piles, and the reinforcement layer is welded to the circumferential steel members on both sides. Two water-swellable waterstops are fixed to the original engineering piles and are respectively set in the middle and lower middle parts of the new pile foundation cap. The application of T-shaped circumferential steel members and the reasonable use of steel bar welding and anchoring techniques in this application make the new structure and the original structure form an integral whole, improving the overall integrity and load-bearing capacity of the structure and meeting the requirements for underground floor addition.

This utility model discloses a composite foundation and its installation structure. The composite foundation includes: a pile foundation, inserted into the soil downwards along the ground level, with the end of the pile foundation sunk below the ground level; and a shallow pit concrete foundation, constructed around the pile foundation at a predetermined depth below the end of the pile foundation, used to fix the pile foundation. This utility model reduces the amount of earthwork excavation, the horizontal excavation area, and the vertical excavation depth, effectively reducing conflicts with surrounding underground pipelines and the risk of damage to them. Simultaneously, the shallow pit concrete foundation reduces the amount of concrete poured, shortens the construction period, and improves the overall construction efficiency of the composite foundation.

This invention relates to the field of construction technology in pebble-rich water-bearing areas, and more specifically, to a construction method for buildings in such areas. The method involves first digging drainage ditches around higher elevations to intercept surface water; then, integrating high and low elevation areas for unified excavation of the foundation pit, utilizing natural elevation differences and a gravity-fed drainage system using perforated UPVC pipes and graded crushed stone; setting up temporary water-retaining embankments and implementing staggered construction from high to low elevations, with closed-loop dedicated drainage channels at the junctions to direct water flow; installing prefabricated waterproof concrete collection wells in low-lying areas, forming a closed-loop waterproof system with foundation brick formwork and flexible waterproof membrane; and finally, constructing crushed stone drainage blind paths along the surrounding wall foundations and backfilling. This invention achieves continuous, all-weather, non-powered water control, ensuring the stability of the foundation pit slopes and zero leakage in the main structure. This invention is mainly applied to the construction of buildings in pebble-rich water-bearing areas.

The utility model discloses a large -diameter water supply pipeline steel bar winding device relates to water supply pipeline repair technical field, including the trolley frame, the upper end of trolley frame is installed two and presents left and right symmetry to set up the side plate, rotatably installed with upper roller, lower roller and middle roller between two side plates, the upper roller is located the just above of lower roller, and the steel bar access channel is formed between the upper roller and lower roller, and the middle roller is located the front of steel bar access channel and keeps synchronous same -direction rotation with lower roller, and the middle roller is along vertical direction and is assembled in the side plate, the upper roller and lower roller synchronous reverse rotation drive steel bar steady progress transmission to the direction of close to the middle roller, simultaneously, the middle roller rises closely the steel bar processed along the vertical direction. Through setting up upper roller, lower roller and middle roller realized the spiral bending operation of steel bar, and the damaged area of large -diameter water supply pipeline is repaired by spiral steel bar instead of stainless steel lining pipe.

This invention belongs to the field of water conservancy and hydropower construction technology, specifically providing a construction method for excavating a single-sided bridge across a steep folded rock face road cut. The method includes the following steps: measuring and setting out according to design drawings; fabricating steel beams and installing them at the target location in the ditch; using machinery to excavate the slope along the designed route; excavating the slope overburden and upper strongly weathered rock; excavating the lower weakly weathered rock of the pre-splitted slope, using stepped blasting for rock excavation in stages; and completing the excavation of the single-sided bridge across a steep folded rock face road cut after inspection and acceptance. This invention solves the problems of large excavation volume, difficulty for machinery to cross gullies, collapse of upper deposits, and significant construction hazards associated with existing mechanical + blasting methods for excavating steep folded rock faces. This invention features minimal over-excavation, shorter construction period, guaranteed quality, safety and reliability, and reduced ecological impact.

The application provides an anchoring type pile foundation beam gravity retaining dam structure, relates to the geological disaster prevention engineering technical field, and is suitable for debris flow prevention engineering under high and steep slope or soft foundation conditions. The structure comprises a dam body, a beam, an anti-slide pile, a continuous beam and a prestressed anchor cable system. The dam body is a cast-in-place structure and is arranged on the beam, the beam is connected with the anti-slide pile, the top of the anti-slide pile is transversely connected through the continuous beam to form an integral force structure, anchor holes are pre-set in the beam, the prestressed anchor cable system is arranged in the anchor holes and is connected with the foundation to make the dam body, the beam, the anti-slide pile and the foundation bear force cooperatively. The structure can reduce the excavation amount, improve the overall stability, the anti-slide capacity and the anti-overturning capacity of the retaining dam, and enhance the structural rigidity, and is suitable for complex geological conditions such as rock, soil and composite stratum.

The application discloses a comprehensive utilization tunnel structure of pumped storage power station and a use method thereof, which comprises a tunnel entrance, a tunnel front section, a tunnel middle section, a tunnel rear section and an energy dissipation section arranged in sequence, the tunnel entrance is provided with horizontal water flow channels and vertical water flow channels, and the horizontal water flow channels and the vertical water flow channels are communicated with the tunnel front section respectively; the tunnel middle section is arranged with a water discharge pipe front section, the tunnel rear section is arranged with a water discharge pipe rear section, the tunnel front section, the water discharge pipe front section, the water discharge pipe rear section and the energy dissipation section are sequentially communicated, and the water discharge pipe rear section is installed with a water discharge valve; ecological pipes are embedded in the tunnel front section, the tunnel middle section and the tunnel rear section, the front end of the ecological pipe is communicated with the vertical water flow channels, and the rear end of the ecological pipe is communicated with the energy dissipation section. The tunnel structure can realize flow guiding, flood discharge and ecological water supply, and compared with a traditional tunnel structure, the tunnel structure can greatly reduce the engineering quantity and investment cost.

The utility model discloses a steel bar confined concrete shield segment of coal mine support engineering technical field's suitable laser scanning identification, including a plurality of along the annular splicing fixed pipe piece prefabricated subassembly, every pipe piece prefabricated subassembly includes: ring shaped reinforcement cage, ring shaped reinforcement cage is the component framework of pipe piece prefabricated subassembly, spiral rib and annular structural rib, a plurality of spiral rib and annular structural rib extend along the inside annular of ring shaped reinforcement cage and axial interval distribution, spiral rib and annular structural rib are adjacent to each other and are fixedly connected with ring shaped reinforcement cage through positioning member, concrete, the concrete includes protective layer concrete, interlayer concrete and core concrete, the protective layer concrete is cladded in ring shaped reinforcement cage outside, the interlayer concrete is filled between ring shaped reinforcement cage and spiral rib. The utility model improves material utilization, reduces production cost, reduces the shaft and roadway excavation amount in the construction process of pipe piece support of coal mine inclined shaft.

The utility model discloses a composite gradient lining structure for a highway tunnel in a cold region, which relates to the technical field of tunnel construction and comprises a tunnel primary support serving as an outermost support structure, a tunnel inverted arch arranged at the bottom of the tunnel and connected with the tunnel primary support, and a tunnel filling layer arranged above the tunnel inverted arch. Through optimal combination of different materials, a gradient transition layer is formed, material stress concentration caused by freeze-thaw cycle is effectively relieved, lining cracking and peeling risks are remarkably reduced, and the service life of a tunnel in a low-temperature environment is prolonged; according to the design of the tunnel composite gradient lining structure in the scheme, the thickness can be adjusted according to the grade of surrounding rock when a new project is applied, but due to the excellent performance of materials used by the composite gradient lining, the total thickness of the lining structure is smaller than that of a common structure, the excavation volume of the surrounding rock can be reduced, the construction risk is integrally reduced, and the engineering economy is improved.

The application relates to the technical field of municipal drainage construction, and discloses a kind of installation construction method of integrated lifting pump station under complex environment, comprising the following steps: S1, construction control network is established in the area to be installed, including control pile, review survey point and construction leveling point, to determine the center position of pump station shaft, the installation orientation of water inlet and outlet and hoisting reference line, so that the subsequent work shaft construction, pump station hoisting, pipeline connection and backfilling retest all adopt the same coordinate reference; the application combines reverse work shaft, directional lowering, attitude correction, pipe connection limiting, zoned backfilling and acceptance closed loop into continuous construction control chain, so that pump station installation no longer only relies on hoisting experience and manual observation, but forms a measurable, correctable and reviewable construction method, which has small disturbance to surrounding soil, small environmental impact, does not need large-scale slope, has small space occupation, can reduce earthwork excavation amount, has strong environmental adaptability, is safe and reliable, and has good construction quality effect.

The utility model belongs to the urban underground space development technical field, concretely relates to an intensive street crossing tunnel and city tunnel combined structure, the combined structure is two layers vertically superimposed arrangement, includes ground floor and underground second floor, sets up the subway and comprehensive pipe gallery in the ground floor, sets up the car tunnel in the underground second floor, the subway and comprehensive pipe gallery are left and right two groups horizontal parallel arrangement, the subway is located in both sides, comprehensive pipe gallery is located in the middle, the car tunnel is one group horizontal parallel arrangement's two -way car tunnel, the top of car tunnel and the bottom of subway and comprehensive pipe gallery share, the both sides outer wall of subway and comprehensive pipe gallery and the both sides outer wall of car tunnel share, simultaneously still include the stairway for connecting the subway and outside, the convenient people walk.

This invention discloses a method for assisting ships in passing through navigation tunnels. It includes the following steps: Step 1: retracting the wheeled drive mechanism; Step 2: moving the towing platform to the waiting ship; Step 3: extending the wheeled drive mechanism; Step 4: the bow of the ship entering the concave structure of the towing platform; Step 5: connecting the towing platform to the bow mooring bollard or hull of the ship; Step 6: activating the wheeled drive mechanism to tow the towing platform and ship; Step 7: moving the towing platform to the exit of the navigation tunnel and disconnecting the towing platform from the bow of the ship; Step 8: the towing platform exiting the channel and waiting for oncoming ships in the double-lane navigation tunnel; Step 9: the oncoming ship passes through by its own propulsion; Step 10: the towing platform connecting with the oncoming ship and towing it through the tunnel; Step 11: the towing platform returning to the starting point of the navigation tunnel. This invention has the advantage of enabling ships to pass through long-distance navigation tunnels under conditions of large water level fluctuations.

The utility model discloses a gate equipment for hydraulic engineering, including gate and the gate pier that cooperates with gate. The gate includes gate leaf structure, lifting lug structure, cantilever roller and water stop device, and the lifting lug structure is established at the back of gate leaf structure bottom, and the cantilever roller is arranged in the side beam both sides of gate leaf structure, and the water stop device is attached on the gate. The gate pier is equipped with a door groove that cooperates with cantilever roller, and the main rail straight rail and the reverse rail straight rail that are matched with cantilever roller respectively. The upper portion of connecting reverse rail straight rail is further equipped with reverse rail arc rail, and the vertical direction height of reverse rail arc rail is lower than the main rail straight rail. The utility model discloses the forward inclination lift-lie type gate that leans down to the upstream, and the following advantages have compared to lift-lie type gate, the steel wire rope and the movable pulley of gate hoist equipment are not in the water, and the life is long. The gate water stop device is simple, and the rubber friction is small, and the hoist machine capacity is small, and the high altitude falling object is not produced. The gate unilateral multiple support arrangement is arranged, and the water pressure of bearing is not limited, and the large area orifice can be closed.