15results about How to "Safe and efficient construction" patented technology

The invention discloses a tunnel surrounding rock stability diagnosis method based on TBM multi-modal data fusion. The method comprises the steps of 1, dividing surrounding rock stability types; step 2, preparing TBM (Tunnel Boring Machine) multi-modal data; step 3, carrying out space-time alignment and fusion on the TBM multi-modal data; step 4, multi-modal data null value and duplicate value filling; 5, multi-modal data feature extraction based on the excavation and tunneling section; step 6, constructing a TBM multi-modal feature database based on the tunneling section; 7, constructing a tunnel surrounding rock stability prediction model; and step 8, tunnel surrounding rock stability field diagnosis application. According to the method, the alignment accuracy of different modal data is guaranteed based on time and space information, the modal data with low data null value degree and high data null value degree are repaired and complemented through the nearest neighbor null value filling and linear interpolation method, and the method can be suitable for fusion of different monitoring modals in the tunnel engineering construction process; rapid diagnosis of on-site surrounding rock stability can be realized, and construction environment safety is guaranteed.

The invention discloses a workover treatment efficient dismounting device based on a hydraulic boosting system and an operation method. The workover treatment efficient dismounting device comprises a supercharger and a back striking wrench. The supercharger comprises a shell, an oil way core, a throttling valve, an overflow valve, a control valve and a filter are installed in the shell, a supercharging module, an operating handle, an input inlet, an input outlet, a pressure measuring connector, an output inlet and an output outlet are installed outside the shell, the operating handle is connected with the control valve, and the supercharging module is connected with the filter. The back beating wrench comprises a bent handle, and the head of the bent handle is connected with a jackscrew. According to the invention, the function of dismounting rusted screws by using the low-pressure hydraulic pump of the workover rig in a manner of driving liquid with liquid is realized, the operation construction efficiency is improved, and the potential safety hazard of operation is eliminated.

This utility model proposes an operating platform with a casting base plate for precast beam diaphragms, belonging to the field of bridge engineering technology. It solves the problems of insufficient rigidity in casting molds assembled with wooden templates and tie bolts, leading to diaphragm collapse, insufficient concrete density, unstable lifting frame construction, and high construction costs. It includes a rectangular plate and multiple horizontal braces. The two ends of the rectangular plate are locking and fixing sections, and the middle section is the casting section. The casting section has multiple vertically oriented lifting and fixing through holes. The multiple horizontal braces are parallel to each other and located in the same horizontal plane, fixedly connected to the casting section. The length direction of the multiple horizontal braces is perpendicular to the long side direction of the rectangular plate. The upper surface of the locking and fixing section contacts the bottom surfaces of the precast beams on both sides. It is mainly used for the casting construction of precast beam diaphragms.

The disclosed urban rail transit thin-wall mixed U-shaped beam industrial construction method and construction system carries out the construction of U-shaped beam beam manufacturing pedestal and beam storage tensioning pedestal in the site; carries out the U-shaped beam steel bar binding and the installation of the prestressed steel bundle on the U-shaped beam mold frame, and hoists the U-shaped beam steel cage to the beam manufacturing pedestal through a hanger; after the U-shaped beam steel cage is positioned, the embedded part, the U-shaped beam inner mold and the support system are installed; the thin-wall mixed U-shaped beam structure is optimized; the first tensioning prestressed bundle is constructed; the beam body concrete is poured; the first tensioning prestressed bundle is released and cut; the two U-shaped beams are respectively hoisted to the beam storage tensioning pedestal by using a gantry crane; the second tensioning prestressed bundle is constructed; the hole is grouted and sealed; after the overall operation is completed, the quartz sand is discharged through the steel sand box sand discharge hole, so that the U-shaped beam is lowered to the concrete base of the beam storage tensioning pedestal. The present application comprehensively and systematically solves the problems of large waste of original technical resources and low production efficiency.

The invention belongs to the technical field of pile head construction, and particularly relates to a construction structure facilitating pile head breaking and a cast-in-situ bored pile head processing method.The construction structure comprises prefabricated isolation blocks, hoops and limiting ribs, and at least two prefabricated isolation blocks are spliced to form an annular construction structure matched with a pile head; the hoops are arranged on the outer sides of the prefabricated isolation blocks, the limiting ribs are arranged at the splicing positions of the prefabricated isolation blocks, and the limiting ribs are welded to a reinforcement cage on the outer side of the pile head. In the construction process of the cast-in-situ bored pile reinforcement cage, the prefabricated isolation block is installed at the position, needing to be annularly cut, of the pile head in advance and is locked and fixed in combination with the hoop and the limiting rib, when the pile head is broken, the prefabricated isolation block is directly broken, the traditional annular cutting procedure is replaced, the traditional annular cutting procedure is omitted, the safety risk is reduced, and the construction efficiency is improved.

The present application relates to the technical field of net rack structure reinforcement, and particularly relates to a welding-free full-assembled net rack rod piece reinforcement device and method. The device comprises: a fixed center bearing frame for reinforcing a circular tube component; a telescopic vertical sliding inclined strut assembly arranged between two adjacent vertical fixed vertical rods; an assembled sectional sleeve assembly for fixing the fixed center bearing frame outside the circular tube component; a cable body for connecting two connecting bases on the fixed center bearing frame; and a tensioning adjusting mechanism for adjusting the tension of the cable body. The welding-free full-assembled net rack rod piece reinforcement device and method provided by the present application adopts a welding-free full-assembled construction process, and the components are standardized prefabricated in a factory. The components are only assembled by bolts and pins at the site, so that the construction is safe and efficient, welding damage is avoided, and the original structure performance is not affected. The components are connected by bolts, so that the components are convenient to disassemble and assemble, the components can be recycled and reused, and the engineering cost is reduced.

According to the method for calculating the supporting efficiency of the slurry pressure at the shield excavation face, the supporting efficiency of the slurry pressure can be simply and rapidly calculated according to the dissipation slope of the excess pore water pressure in front of the excavation face and the internal friction angle parameter of the excavation stratum; therefore, on the premise that safe and efficient construction of the slurry shield is guaranteed, waste of slurry is reduced, and the construction economic cost is reduced. According to the dissipation slope of the ultra-static pore water pressure in front of the slurry shield excavation face, the dissipation distance of the ultra-static pore water pressure at the topmost part and the bottommost part of the slurry shield excavation face is calculated, and the total range of slurry pressure supporting is determined; according to the internal friction angle # imgabs0 # of the slurry shield excavation stratum, the potential sliding area range in front of an excavation face is determined; and taking an overlapping area of the total mud pressure support range and the potential sliding area range as an effective mud pressure support range.

The invention discloses a desulfurizing agent for acidizing a sulfur-containing reservoir, which is prepared from the following components in percentage by volume: 20 to 30 percent of compound complex iron reagent, 15 to 20 percent of amine reagent, 5 to 15 percent of activating agent and 35 to 60 percent of solvent water, and the sum of the volume contents of the components is 100 percent. The desulfurizing agent for acidification of the sulfur-containing reservoir solves the problems that in the prior art, the compatibility of a desulfurizing agent and other reagents in the acidification process is poor, and the acting effect is affected. The invention further discloses a preparation method of the desulfurizing agent for acidification of the sulfur-containing reservoir.

The invention discloses a construction method for a shield under-crossing river section, and belongs to the technical field of tunnel engineering construction. Aiming at the problems of high water inrush and mud inrush risk, difficult settlement control, unbalanced efficiency and cost and the like confronted by water-rich karst stratum shield construction, the method realizes safe and efficient construction through a five-in-one technical system of investigation, reinforcement, regulation and control, monitoring and emergency; a high-pressure jet grouting pile anti-seepage curtain, a reinforcing mesh and an anchor rod are compounded to reinforce a riverbed, shield propulsion parameters and a grouting system are dynamically optimized in a double-stage mode to be matched with a complex stratum, a monitoring system is constructed, yellow-orange-red three-stage early warning adjustment is conducted, and accurate treatment measures are formulated according to reserve special emergency materials. According to the method, riverbed settlement is controlled within 3 mm, the construction efficiency is improved by 25%-30%, the engineering cost is reduced by 15%-20%, the influence on river ecology is small, and the method is suitable for river crossing construction of tunnel engineering such as subways and municipal pipelines.

The utility model relates to the field of building installation, in particular to a small component for temporarily fixing nuts during installation of embedded parts, which comprises two cross beam reinforcing steel bars, a plurality of longitudinal beam reinforcing steel bars arranged between the two cross beam reinforcing steel bars and a plurality of groups of nuts arranged at two ends of the longitudinal beam reinforcing steel bars. The two nuts are installed on the lower right portions of the two intersection points of the cross beam steel bar and the longitudinal beam steel bar respectively. The device is low in investment, good in effect, safe and efficient in construction and high in installation precision, and the problems of insufficient precision of independent field installation, difficulty in nut position adjustment and the like are solved.

This invention discloses a sliding directional drilling feed force control method based on equivalent input disturbances, comprising: establishing a mathematical model for pressure reducing valve control, obtaining the mapping relationship between electromagnet current and pressure reducing valve outlet pressure, and modeling and controlling the directional drilling rig feed system; modeling includes: constructing the transfer function of the directional drilling rig feed system and establishing the state-space equation of the directional drilling rig feed system; control includes: establishing a control structure based on equivalent input disturbance estimation and compensation, specifically designing a state feedback controller, a state observer, and an equivalent input disturbance estimator, to achieve stable operation of the sliding directional drilling feed force closed-loop control system, enabling the system to have good tracking and disturbance suppression functions, and providing a control research foundation for ensuring the working performance of the directional drilling rig and the safe and efficient construction of directional drilling holes.

The utility model relates to manual pipe jacking construction technical field, and disclose a kind of device of safe and efficient jacking of helping manual pipe jacking, including pipe jacking pipe material and steel sleeve, the front end of pipe jacking pipe material is provided with safety protection component, the safety protection component includes soil entering knife edge and secondary soil entering assembly, the soil entering knife edge and secondary soil entering assembly are annular hollow structure, and respectively located steel sleeve front end and rear end, the soil entering knife edge and secondary soil entering assembly are formed safety protection component by welding mode;Mainly in the front end of manual pipe jacking setting safety protection component to change construction soil position, method includes safety protection component customization, assembly and other steps.Compared with the soil outside of pipe in the prior art of manual pipe jacking, the safety protection component in the case directly plays the role of changing soil position, when manual pipe jacking construction, personnel only need to enter pipe after pipeline jacking, construction is safe, operation efficiency is greatly improved.

The invention discloses a construction method of an assembly type ecological pile. The construction method comprises the following steps that (1) a first ecological pile body is laid to serve as a positioning pile; (2) a supporting pile is laid at the position, with the linear distance equal to the length of the guiding round pipe, of the positioning pile; (3) preparing a guide frame; (4) a hoisting clamp is used for clamping an ecological pile body to be driven, then the ecological pile body to be driven is hoisted through hoisting equipment, the ecological pile body downwards penetrates through the position between the two guide round pipes, and the ecological pile body to be driven is downwards driven into the pile foundation; (5) the hoisting clamp is loosened from the ecological pile body which is driven into the pile foundation, and the hoisting equipment hoists the hoisting clamp to another ecological pile body which needs piling to continue piling; and after the operation of the step (5) is repeated, the multiple ecological pile bodies are driven into the pile foundation. According to the construction method of the fabricated ecological pile, pile body construction is safer and more efficient, the pile body is more stable and not prone to swinging in the construction process, and the direction of the pile body is not prone to deflection.

The invention discloses a road network accessibility analysis method based on multi-source data fusion. The method comprises the following steps: for a target research area, acquiring multi-source data, and preprocessing the multi-source data; by utilizing the multi-source data and adopting a SpaceP method, constructing an expressway complex network by taking each prefecture-level city as a network node, expressway sections among the cities as connecting edges and freight traffic among the cities as edge weights; based on the highway complex network, carrying out freight reachability analysis by using an improved gravity model, and determining the freight reachability of each city; and according to the freight reachability of each city, determining the freight reachability of the target research area. According to the scheme provided by the invention, the application of big data and Internet technologies in road traffic transportation can be promoted, data support is provided for road network accessibility analysis, and the construction of a safe, efficient, green and unblocked provincial intelligent road transportation logistics network is facilitated.