220results about How to "Construction safety" patented technology

The invention discloses an underground diaphragm wall steel bar lap joint bending resistance calculation method based on big data, and belongs to the technical field of underground engineering design. In order to solve the problems that the condition change of a construction site is difficult to respond in real time, the construction parameters are difficult to dynamically adjust and the complex construction environment is difficult to adapt, the data set quality and the bending resistance prediction precision are effectively improved through multi-source data acquisition and key feature screening, and a physical prediction model of a steel bar lap joint is established. According to the method, factors such as stress transmission and binding power are comprehensively considered, so that the model has good adaptability under different working conditions, model parameters are dynamically adjusted, the model responds to changes of environments and construction errors in real time, the weight is automatically adjusted when monitoring data fluctuates, accurate prediction of the bending resistance is achieved, potential failure risks are effectively prevented, and the construction quality is improved. And a failure mode pre-judgment and multi-level risk management mechanism helps a construction team to quickly identify a high-risk area and flexibly adjust a construction scheme.

The invention discloses a double-row steel sheet pile and soil core combined cofferdam structure and a construction method. The double-row steel sheet pile and soil core combined cofferdam structure comprises double-row pile connecting units, steel sheet piles, brackets, steel enclosing purlins, dredger fill and drainage plates. Each double-row pile connecting unit is formed by welding an upper connecting plate between two connecting steel sheet piles; the double-row pile connecting units are inserted into a soil body, and a steel sheet pile is inserted between every two double-row pile connecting units; corbels are welded to the outer sides of the steel sheet piles, steel enclosing purlins are arranged on the corbels, and the steel enclosing purlins, the steel sheet piles and the corbels are connected in a welded mode; dredger fill is filled between the two rows of steel sheet piles and is compacted by a hammer-attached soil squeezer; a drainage plate is inserted into the dredger fill; earth excavation is conducted on the side, close to water, of the double-row pile cofferdam to form a foundation pit; when shallow excavation is conducted on the foundation pit, no sand filling pipe bag is arranged; when the foundation pit is deeply excavated, a slope section is reserved; sand filling pipe bags are arranged on the outer side of the slope section and stacked on the outer side of the slope section in a staggered mode. The hammer-attached soil squeezing device comprises an attached hammer, a pressing plate, water permeable holes, geotechnical cloth and a brush.

The invention belongs to the field of geological engineering construction, discloses an automatic analysis method and system for tunnel advanced geological forecast by an elastic wave method, and solves the problems of few training samples, poor universality of intelligent model engineering and low automation level in the research of applying artificial intelligence to tunnel advanced geological forecast analysis in the prior art. The method comprises the following steps: identifying an elastic wave method parameter image to obtain elastic wave method parameter data, and establishing an elastic wave method parameter database; a mapping relation of elastic wave method key geophysical prospecting parameters-geological indexes-geological quality is established by combining a rock mass mechanics theory, a geological disaster formation mechanism and the like so as to establish a classifier classification principle; and finally, adopting a machine learning method to construct a classifier model according to a classifier classification principle, and obtaining training and testing samples based on an elastic wave method parameter database to train and verify the model. By utilizing the model, real-time whole-process automatic analysis can be realized, so that the analysis accuracy and efficiency are improved.

The utility model provides a rock drill impact hydraulic control valve group and a rock drill, the valve group comprises a hydraulic control reversing valve, a first throttling hole, an electric proportional overflow valve, an overflow valve, a second throttling hole, a valve body and an electromagnetic reversing valve, the valve body is provided with a pressure oil port P, an oil return port T, an oil drainage port L, an LS oil port and a working oil port A; the pressure oil port P is communicated with an oil inlet of the overflow valve and an oil inlet of the second throttling hole through a hole channel in the valve body. An oil outlet of the second throttling hole is communicated with an oil inlet of the electromagnetic reversing valve; a working oil port of the electromagnetic reversing valve is communicated with a control oil port of the hydraulic control reversing valve; the oil return port T is communicated with an oil outlet of the overflow valve; and the oil drainage port L is communicated with an oil drainage port of the electromagnetic reversing valve, and is communicated with an oil drainage port of the hydraulic control reversing valve, an oil outlet of the electric proportional overflow valve and a control oil port at the same time. Damage of pressure building to a system and elements is eliminated, and residual impact pressure existing after oil cut-off is eliminated.

The invention relates to the technical field of tunnel construction, in particular to a construction method for a double-track tunnel to pass through basalt with tuff in a water-rich section. Comprising the following steps: S1, tuff identification; s2, advanced geological forecast; s3, closing the tunnel face; s4, a forepoling system is established; S5, a tunnel body is excavated, wherein a three-step method is adopted as an excavation construction method; s6, reinforcing a steel frame lock leg support; s7, support parameters are determined; s8, arranging drainage holes; and S9, monitoring and measuring. A plurality of supporting systems are formed, the supporting effect is good, combination with the soil body is stable, the water plugging consolidation effect is obvious, and construction is safe and reliable; the supporting method and the grouting means are organically combined, the procedure connection continuity is good, safety is high, the application range is wide, the construction speed is high, and safety performance is high. The construction method is mainly applied to the construction aspect of the double-track tunnel crossing the basalt and tuff in the water-rich section.

The present invention discloses an intelligent construction method, system and complete set of intelligent construction equipment based on BIM model, the method includes constructing a tunnel BIM information model based on a preset construction plan; automatically issuing construction tasks to intelligent construction units based on the tunnel BIM information model, and the intelligent construction units automatically or guide to complete the construction tasks; automatically monitoring the construction quality data and construction process data of the intelligent construction units, and feeding back to the tunnel BIM information model, optimizing the tunnel BIM information model, and forming a PDCA closed loop. The present invention establishes a tunnel BIM information model, carrying construction geological information, design scheme, construction scheme, construction plan and construction process data, etc., drives the intelligent construction of the tunnel based on the BIM information model, realizes the closed-loop management of planning, issuing, executing and monitoring of construction tasks, and uses advanced geological forecasts and real-time feedback construction reports to timely revise the construction plan.

The invention discloses a novel reinforced concrete prefabricated pipe gallery construction method, relates to the technical field of industrial and civil structure reinforced concrete prefabricated pipe galleries, and solves the technical problems of short construction period and low cost. The method comprises the steps that firstly, concrete beams and columns of the reinforced concrete pipe gallery are split according to a construction drawing and then prefabricated in a prefabrication yard; 2, after construction of the cup foundation is completed, the corresponding prefabricated columns and prefabricated beams are transported to the side of the foundation, the prefabricated columns are hoisted and fixed in the cup foundation, temporary inclined struts are installed, then the prefabricated beams are installed and fixed layer by layer through an elevator or a crank arm vehicle, and formwork clamps are installed at the beam column connecting joints; thirdly, after completion, high-strength-grade non-shrinkage concrete is poured, and therefore the transverse frame without weakening of the integrity is formed; the construction method is simple and easy to operate, and the requirement for the construction technology is not high.

The tool comprises an outer pipe, a throttling sleeve, a touch rod, a driving sleeve and a drill bit, a plurality of cutter blocks are arranged in the side wall of the lower portion of the outer pipe, the throttling sleeve is arranged in the outer pipe and can move up and down, the touch rod is connected to the bottom of the throttling sleeve, and the driving sleeve is arranged in the outer pipe. A plurality of pushing blocks are arranged on the outer wall of the driving sleeve in the circumferential direction at intervals. The throttling sleeve can move downwards by a preset distance when the displacement of liquid injected into the throttling sleeve reaches a preset value, and drives the touch rod to move downwards to be inserted into the driving sleeve to generate throttling, so that the liquid pushes the driving sleeve to move downwards to a preset position, the push block pushes the corresponding cutter block outwards, and the cutter block is opened outwards. According to the tool and the method, an existing polished drill rod can be replaced for cement injection for leaking stoppage, a roller bit can also be replaced for cement plug drilling, continuous multiple cement leaking stoppage operation without pulling out of a hole is achieved, meanwhile, after plug drilling is completed, the normal drilling capacity is achieved, the number of times of pulling out of the hole is reduced, and the leaking stoppage operation period is greatly shortened.

The invention relates to the technical field of railway tunnels, in particular to a surrounding rock steel arch support construction method, after a tunnel is excavated, a steel arch is annularly spliced and installed along the section of the tunnel, primary support is carried out, the steel arch is formed by splicing and connecting steel arch sections, and each steel arch section is composed of a profile steel arch section and a flexible expansion pipe; the section steel arch frame sections are circular-arc-shaped section steel arch frame sections with openings in the upper portions, the flexible expansion pipes are embedded in the circular-arc-shaped steel arch frame sections, the flexible expansion pipes are filled with filling materials, and the flexible expansion pipes are extruded through the filling materials till the flexible expansion pipes are tightly attached to the inner walls of the circular-arc-shaped section steel arch frame sections. A first buffer layer is further arranged between the flexible expansion pipe and the arc-shaped steel arch frame section, and the first buffer layer is an elastic rubber plate arranged on the inner side of the arc-shaped steel arch frame section. According to the method, the primary support is more stable and firmer, the supporting force is higher, certain toughness and buffering force are achieved, and on the basis that the supporting strength is guaranteed, the support is not prone to breakage.

The invention discloses a method for treating cracking of a power transmission tower foundation by reducing uplift force. The method comprises the following steps: building an uplift-resistant foundation; processing a connecting plate; a protective cap of the cracked foundation is dismantled; welding the connecting plate and the tower foot plate; installing a temporary stay wire for controlling the safety of the iron tower; the cracked concrete is removed; pouring and curing concrete at the cracking part; dismantling the temporary stay wire; and pouring a concrete protective cap. According to the method for treating power transmission tower foundation cracking by reducing the upward pulling force, the upward pulling force acting on the foundation is reduced, and cracked concrete is removed, so that the problem of foundation cracking is fundamentally solved.

The utility model discloses a lifting mechanism capable of automatically adjusting a counter weight, and belongs to the field of construction equipment. According to the lifting mechanism, a suspension arm is hinged to a rotary supporting platform, and vertical swing of the suspension arm is achieved through an amplitude modulation oil cylinder; the balance arm is formed by hinging one end of a first arm section and one end of a second arm section, the other end of the first arm section is hinged to the rotary supporting platform, and a weight used as a balance weight is fixed to the other end of the second arm section. The two ends of the push-pull oil cylinder are hinged to the first arm section and the rotary supporting platform respectively, and the pitch angle of the first arm section is changed through stretching and retracting of the push-pull oil cylinder. The two ends of the balance arm jacking oil cylinder are hinged to the first arm section and the second arm section respectively, and the opening angle between the first arm section and the second arm section is changed through stretching and retracting of the balance arm jacking oil cylinder. According to the lifting mechanism, the balance moment can be dynamically adjusted through matching of different oil cylinders, so that the balance bending moment of the lifting mechanism is dynamically adjusted, and the lifting weight of the lifting mechanism is increased.

The utility model provides an induction pay-off device which comprises a pay-off mechanism which comprises a stocker for storing materials and drawing lines during pay-off; the frame is connected with the stocker, and the frame is provided with at least one wheel; the sensing mechanism comprises a receiver and an emitter, the receiver is connected with the frame, the emitter is arranged on a preset moving route, and the receiver collects and prompts the moving deviation state by sensing signals emitted by the emitter; the wheels can be provided with bulges to enhance the road holding force; the pay-off mechanism is provided with a baffle and a baffle base to adjust the pay-off amount. The pay-off device has the advantages that inaccurate pay-off or re-pay-off caused by deviation from a preset route is avoided, body injury of personnel is reduced, uneven spreading of ash is avoided, the pay-off device can adapt to complex terrain operation, the structure is simple, construction is safe, cost is reduced, and construction efficiency and pay-off quality are improved.

The invention discloses a TBM surrounding rock quality real-time sensing method based on physical guidance online transfer learning. The TBM surrounding rock quality real-time sensing method comprises the steps that 1, source domain and target domain tunnel engineering objects are divided; step 2, feature parameter extraction based on a source domain field monitoring data sharing parameter space; 3, constructing a thrust prediction model based on LSTM (Long Short Term Memory); 4, constructing a surrounding rock state prediction model based on a similarity index; and step 5, target domain surrounding rock quality online prediction. According to the method, characteristic values of working section data streams are extracted based on shared space parameters in different tunnel engineering field monitoring data in a source domain, and a surrounding rock quality online prediction module based on shared characteristics is constructed for real-time identification of a cross-engineering surrounding rock state. The migration application feasibility of a related intelligent model is broadened, the online prediction module can achieve rapid diagnosis of the surrounding rock state by means of real-time monitoring data flow in the construction process of the newly-built tunnel TBM, and an important basis is provided for guaranteeing efficient and safe construction of the TBM.

The utility model relates to a steel support stress conversion device. A traditional construction method is tedious in construction procedure, poor in waterproof effect of a post-pouring part, high in construction risk and long in construction period. The device comprises a stress conversion mechanism, the stress conversion mechanism is arranged on a station structure top plate and a station structure middle plate, an air flue steel support is connected to the stress conversion mechanism, and the other end of the air flue steel support is connected with an auxiliary fender post; the stress conversion mechanism comprises a first supporting base and a second supporting base, the first supporting base is arranged on a top plate of a station structure, the second supporting base is arranged on a middle plate of the station structure, the air duct steel support comprises a first steel pipe support and a second steel pipe support, the first steel pipe support is connected to the first supporting base, and the second steel pipe support is connected to the second supporting base. The second steel pipe support is connected to the second supporting base. Only one-time pouring is needed, the construction procedure is simple, construction is safe, and the construction period is short.

The invention discloses an expressway optical cable blowing laying construction method. The method comprises the steps of S1, construction preparation; s2, the ratio of the outer diameter of the optical cable to the inner diameter of the silicon core pipe ranges from 0.35 to 0.6; the suitable working environment temperature is 6-32 DEG C; s3, slowly opening a compressed air inlet ball valve, and controlling the traction force of an air seal piston on the optical cable by changing the opening size of the valve; s4, when the feeding distance of the optical cable is short, the opening degree of the air inlet of the valve is small, and then the opening degree is gradually increased until the air inlet is completely opened; and S5, after the optical cable reaches a preset point, namely, the air seal piston comes out of the pipe (the air pressure is sharply reduced at the moment), an observer at the pipe end timely prompts an operator of the cable blowing machine to shut down immediately and stop conveying the optical cable into the pipe, so that the air-blowing laying operation of a section of optical cable is completed. And S6, cable reversing operation, namely conveying the optical cable into the'optical cable reversing device ', so as to pour out the remaining optical cable on the original cable tray and find out the other end to prepare for blowing and conveying the optical cable in the reverse direction.

The present invention belongs to the field of geological engineering construction, and discloses an automatic analysis method and system for advanced geological prediction of tunnels using elastic wave method, which solves the problems of less training samples, poor universality of intelligent model engineering, and low automation level in the existing research on the application of artificial intelligence to advanced geological prediction analysis of tunnels. The present invention obtains elastic wave method parameter data by identifying elastic wave method parameter images, and establishes an elastic wave method parameter database; combines rock mechanics theory, geological disaster mechanism, etc. to establish a mapping relationship between key geophysical parameters of elastic wave method, geological indicators, and geological quality, to establish a classifier classification principle; finally, a machine learning method is used to construct a classifier model according to the classifier classification principle, and training and test samples are obtained based on the elastic wave method parameter database to train and verify the model. The model can be used to realize real-time automatic analysis of the entire process, thereby improving the accuracy and efficiency of the analysis.

The invention relates to the technical field of oil well cement admixtures in the field of oil field well cementation, in particular to a preparation method and application of a high-temperature-resistant graft modified gel suspension stabilizer. The invention aims to solve the problem that the molecular chain structure of the existing common high polymer material suspension stabilizer is easy to break at high temperature and loses the suspension stability. The preparation method of the high-temperature-resistant grafted modified gel suspension stabilizer comprises the following steps: step 1, dissolving a monomer in deionized water, introducing protective gas, regulating the pH value of the solution by using a pH regulator, dissolving an initiator and a cross-linking agent in deionized water, and uniformly stirring to obtain a solution A; and filtering, crushing, purifying and drying the polymer prepared by the reaction to obtain the polymer gel material. And 2, dissolving the grafted component inorganic nanoparticles in deionized water, adding the gel material, introducing protective gas, adding a grafting agent, and carrying out a chemical grafting reaction to obtain the grafted modified gel suspension stabilizer.

The invention discloses a shield construction method for a sand-pebble stratum tunnel, comprising the following steps: reinforcing an end portal and installing a starting bracket; installing a reaction frame support system; installing the shield in slag, extending a portal steel ring and a seal, optimizing shield excavation parameters, measuring and adjusting the shield, etc., thereby ensuring that the shield construction is safe, smooth and fast, and achieving an ideal working condition when the shield is excavating in the sand-pebble stratum.

The invention relates to a suspension bridge main cable finished bridge line shape analytical calculation method considering the torsional rigidity of a main cable, electronic equipment and a medium, and the calculation method comprises the following steps: considering the dead weight of the main cable and the load effect of a suspender, simultaneously including the tensile rigidity and the flexural rigidity of the main cable, and constructing a geometric precise equilibrium equation of the main cable under the dead weight and the load of the suspender; the influence of the bending moment in the main cable is ignored, incomplete boundary conditions are considered, and a quadratic approximate solution is solved based on a direct perturbation method; considering the influence of the bending moment of the main cable, combining the complete boundary, solving the influence of the bending moment of the main cable on the static linearity of the suspension bridge based on a direct perturbation method, and obtaining a second-order approximate solution considering the bending moment; through the compatibility condition of the left end point and the right end point, the corrected catenary equation and the second-order approximate solution considering the bending moment are combined. Compared with the prior art, the influence of the bending rigidity of the main cable is considered, the mechanical concept is clear, shape finding under different boundary conditions can be considered, and design and calculation of the main cable can be further guided.

The invention relates to a large-span deep foundation pit steel-concrete combined supporting structure and a construction method thereof. The large-span deep foundation pit steel-concrete combined supporting structure comprises profile steel enclosing purlins arranged on the edge of a foundation pit; the concrete side truss structures are arranged on the two opposite sides of the foundation pit; the profile steel supports are connected between the oppositely arranged concrete fringe truss structures in a supporting manner; the multiple profile steel angle braces are obliquely arranged at the corners of the foundation pit in a supporting mode, and the ends of the profile steel angle braces are connected with the corresponding profile steel enclosing purlins and the concrete fringe truss structures; and the axial force servo system is connected to the profile steel support and the profile steel angle brace and is used for applying axial force to the profile steel support and the profile steel angle brace. The concrete fringe truss structure has good deformation control capacity and serves as a force transmission buffer strip between the prestressed profile steel support and the enclosure structure coping beam, and the problems that a foundation pit cracks, bends, inclines and the like due to the fact that concentrated axial force is too large are solved.

The invention discloses a construction safety monitoring management system and method based on an intelligent construction site, and relates to the technical field of construction safety, and the method comprises the steps: carrying out the arrangement and classification processing of safety operation specification data, and constructing a normal operation database of construction personnel; calculating a fault threshold value of each type of construction equipment; judging each equipment fault by using the fault threshold; utilizing a linear regression algorithm to calculate and obtain a correlation function of the feature data and the operation data of each type of equipment; correlation functions of the number of faults and the operation data are calculated, and the two correlation functions are used for comprehensive analysis to obtain an optimization function of the operation data of each device; calculating an operation threshold value of operating each type of construction equipment by a constructor; real-time operation data is transmitted to the central processor for judgment; and inputting the real-time characteristic data and the fault frequency of each type of equipment into the optimization function to optimize the operation threshold value of the constructor.

The chimney anti-corrosion structure comprises an outer cylinder and a steel inner cylinder, an anti-corrosion layer is arranged on the inner circumferential face of the steel inner cylinder, the anti-corrosion layer sequentially comprises a framework, a primer layer, foam glass bricks and a protective layer from inside to outside, the framework is installed on the inner circumferential face of the steel inner cylinder, and a plurality of brick lattices are formed between the framework and the steel inner cylinder. The primer layer and the foam glass bricks are sequentially arranged in the brick lattices, and the protective layer is arranged on the outer sides of the framework and the foam glass bricks. According to the anti-corrosion structure, the framework serves as an installation foundation of the foam glass bricks and plays a role in supporting and fixing the foam glass bricks, and the foam glass bricks have the advantages of being resistant to chemical corrosion, resistant to high temperature, excellent in heat insulation performance, resistant to temperature change, light in weight, low in volatilization, safe to construct, long in service life, resistant to fire disasters and beneficial to relieving chimney rain. Construction is simple, and corrosion resistance is high.

The utility model provides a reinforcing structure for a large-span underground excavation station to pass through a fault fracture zone, which comprises an earth surface grouting reinforcing body and an in-hole grouting reinforcing body which are arranged in a crossed mode, and the in-hole grouting reinforcing body comprises a peripheral grouting stopping rock disc and an internal reinforcing body. The peripheral grouting stopping rock disc comprises a base plate and side walls connected to the two sides of the base plate, the ground surface grouting reinforcing body is fixedly connected to the side walls, a through hole is formed in the ground surface grouting reinforcing body, and the internal reinforcing body is connected to the ground surface grouting reinforcing body and covers the through hole. A supporting space used for wrapping the underground excavation station is formed among the peripheral grouting stopping rock disc, the earth surface grouting reinforcing body and the internal reinforcing body. The overall structure is simple, construction safety is guaranteed when the station passes through the fault fracture zone, and construction risks are reduced. And the ground surface grouting reinforcing bodies and the in-hole grouting reinforcing bodies are arranged in an intersecting mode, and the reinforcing reliability is good.

The present invention discloses a method for intelligently predicting the height of two zones in a coal mine goaf, which belongs to the technical field of coal seam two zone height prediction. First, coal mining data in a coal mine area is obtained, and coal mining areas are classified according to coal mining stratum characteristics. Then, existing data of each coal mining area is constructed based on the coal mining data. Then, a training set of a full convolutional neural network model is constructed according to the existing data, and the training set is input into the full convolutional neural network model for training to obtain a coal mine goaf two zone height prediction model. Finally, coal mining design data is input into the coal mine goaf two zone height prediction model to obtain a coal mine goaf two zone height prediction result. The present invention makes full use of the existing coal mining data, has universal applicability for predicting the height of two zones in various types of coal mine goafs, and is conducive to safe and efficient coal mining and green mine construction.

The invention discloses a replacement tool and a replacement method for a coke oven concrete sleeper pressing plate bolt. The replacement tool comprises a platform plate, walking rollers, a water drilling mechanism, a grasping device and a water tank. The platform plate is arranged on a steel rail through walking rollers and can move along the steel rail, and two drilling machine operation holes are formed in the two sides, corresponding to the steel rail, of the platform plate respectively so that pressing plate bolts can be exposed. The platform plate is fixedly provided with at least one water drilling mechanism corresponding to each steel rail, the water drilling mechanisms are fixed on the platform plate between the two drilling machine operation holes, the water drilling mechanisms operate the pressing plate bolts through the drilling machine operation holes, and the water drilling mechanisms are connected with the water tank; the grasping device is fixed to the platform plate and used for grasping the steel rail when the water drill mechanism operates the pressing plate bolt. The replacement tool is convenient to move, disassemble and assemble, so that the labor intensity of coke oven locomotive track maintenance is reduced, the operation efficiency is improved, and the safety risk coefficient is reduced.

The application discloses a kind of millisecond blasting initiation interval determination method, device and system.Compared with prior art, according to actual working condition, single-hole blasting test is carried out, and the measured vibration data of multiple monitoring points are obtained, then the frequency domain distribution is obtained by Fourier transform, the most dangerous monitoring point is determined according to the frequency domain distribution of each monitoring point and its measured vibration velocity and control vibration velocity, and the initiation interval is determined according to the measured vibration data of the most dangerous monitoring point, so that the vibration velocity is effectively controlled, and the construction is safer.Secondly, by adjusting the initiation interval in real time, the vibration velocity is less than the control vibration velocity, which further ensures the safety of blasting construction.

This application provides a construction method for a deep-water cofferdam with limited clearance, comprising the following steps: dividing the steel cofferdam into several segments and transporting them one by one to the target location using a floating method; injecting water into each segment of the steel cofferdam and flipping it to a vertical position; moving each segment of the steel cofferdam to the designed position of the pier, connecting the segments to form a whole, and completing the enclosure of the cofferdam; continuing to inject water into the enclosed steel cofferdam to allow it to sink and anchor to the bed. This application eliminates the need for large lifting equipment, does not occupy the clearance under the bridge, effectively avoids the risk of collision with existing main beams, and significantly reduces on-site work, improving the safety, efficiency, and economy of cofferdam construction in deep-water environments with limited clearance. It is suitable for bridge foundation engineering in complex conditions such as deep water, limited clearance, and low bed depth.

The invention discloses a direction-adjustable cable protection tube, which comprises a cable protection tube fixing part and a cable protection tube rotatable structure combination body, and is characterized in that the cable protection tube rotatable structure combination body is arranged at one end of the cable protection tube fixing part; the cable protection tube fixing part is connected to the jacket leg through the cable protection tube support, the cable protection tube rotatable structure combination body and the cable protection tube fixing part keep concentricity, and the cable protection tube rotatable structure combination body is fixed to the jacket leg. According to the cable protection pipe with the adjustable direction, the protection pipe transverse support and the protection pipe are connected through the U-shaped clamp, when the direction needs to be adjusted, only the U-shaped clamp fastener needs to be loosened, then the cable protection pipe is rotated around the rotating shaft, the U-shaped clamp fastener is fastened again after adjustment is completed, and the cable protection pipe is convenient to adjust. And meanwhile, the anchor chain is used for limiting the device to prevent the device from rotating under the action of ocean current.

This invention discloses a rapid construction method for large-section steel linings at multiple elevations in hydropower stations, belonging to the field of water conservancy and hydropower engineering construction technology. It aims to solve the problems of poor accessibility and high transportation risks on temporary roads leading to dams, and the limited lifting capacity of cable cranes due to civil engineering work, resulting in low installation efficiency and difficulty in ensuring the construction period. This invention manufactures individual sections of the steel lining downstream of the dam, assembles them, and then uses a gantry crane to hoist them onto a track-mounted electric flatcar, which is then horizontally transported to the dam base along a dedicated track. At the installation elevation, a modular cantilevered fixed gantry crane is assembled. This gantry crane has no trolley traveling mechanism; its legs directly rest on the dam body, allowing for rapid installation, disassembly, and reuse. The gantry crane vertically lifts the steel lining to the installation elevation, and then uses an omnidirectional hydraulic transfer trolley to precisely transport it to the work position, where the installation gantry crane completes the assembly. The gantry crane can be disassembled and transported to the next elevation for reuse. This invention eliminates reliance on temporary roads and cable cranes, features tight process connections, and uses versatile and reusable equipment, improving construction safety and efficiency, and is suitable for continuous construction at multiple elevations of dams.