199results about How to "Reduce engineering costs" patented technology

The invention discloses a geological map-oriented breakpoint repairing and closed curve reconstruction method and system and a medium. The method comprises the following steps of: preprocessing an original geological map to obtain a grayscale image; carrying out binarization and morphological closed operation processing to obtain a grayscale image of the edge of the smooth contour curve; performing pixel skeletonization to obtain a pixel-level skeleton diagram; performing secondary edge extraction, connected domain marking and endpoint statistics on the pixel-level skeleton diagram, and screening out a non-closed curve and an endpoint set; carrying out nearest neighbor retrieval by adopting KD-Tree to obtain a candidate pairing set of each end point; performing priority pairing in combination with the spatial distance and the direction smoothness; and generating a transition line segment according to a pairing result to supplement the fracture part of the non-closed curve. According to the method, non-closed breakpoints generated by scanning or drawing errors in the geological map can be automatically restored, and a closed curve with topological integrity and a smooth boundary is generated.

The invention provides a swivel measurement and control system for a swivel bridge. The method comprises the following steps: establishing a multi-parameter monitoring model in a bridge swivel process; the multi-parameter monitoring model is a monitoring model which is based on N times of sampling and comprises p sensor parameters; establishing a control model of swivel measurement and control of the swivel bridge; for the control model, establishing an adaptive adjustment algorithm under a multi-parameter monitoring model; and performing swivel measurement and control on the swivel bridge through a self-adaptive adjustment algorithm. According to the invention, accurate monitoring and control of the bridge swivel process can be realized, the safety and accuracy of swivel operation are ensured, good adaptability and real-time performance are achieved, and the efficiency and quality of bridge swivel engineering can be effectively improved.

The invention belongs to the technical field of underground engineering construction, and provides a shield tunneling parameter optimization method and system based on historical data mining, and the technical scheme is as follows: constructing a shield tunnel geologic model based on an obtained geological survey report and advanced geological forecast data; tunneling safety grading is conducted on the shield tunneling surrounding rock based on the shield tunnel geologic model, and a dynamic geologic model is obtained; based on the dynamic geologic model, the site construction environment and related specifications, set shield construction task information is obtained; according to the dynamic geologic model and set shield construction task information, corresponding shield tunneling parameter information is determined, shield tunneling efficiency under the current shield tunneling parameters is analyzed, if the shield tunneling efficiency does not reach the set level, the shield tunneling parameters are adjusted according to the shield tunneling efficiency condition under the current shield tunneling parameters, and the shield tunneling efficiency is adjusted according to the shield tunneling efficiency condition under the current shield tunneling parameters. And guiding field construction according to the optimized shield tunneling parameters. The shield tunneling efficiency is improved, and the engineering cost is reduced.

The utility model provides a pile foundation concrete pouring over-pouring height measuring device which comprises an installation frame, a winding drum mechanism arranged on the installation frame, a coil spring arranged in the winding drum mechanism, a measuring rope with one end fixed and wound on the winding drum mechanism and a fixing piece connected with a reinforcement cage. The fixed part is arranged on the mounting frame, the floating ball mechanism is movably connected to the fixed part and connected with the other end of the measuring rope, the ratchet wheel is fixedly connected to the winding drum mechanism, and the alarm mechanism is arranged on the mounting frame and used for being matched with the ratchet wheel. The pile hole concrete surface ascends to push the floating ball mechanism to ascend, and then under the action of the coil spring, the winding drum measuring rope is driven to be shortened, the winding drum mechanism and the ratchet wheel are driven to rotate, so that the alarm mechanism matched with the ratchet wheel sends out a signal to remind constructors of the concrete pouring condition, and accurate control over the over-pouring height is achieved. Tediousness and uncertainty of manual judgment are avoided, and construction efficiency and construction quality of the pile foundation are effectively improved.

The invention discloses an ultra-thick backfill complex geological cast-in-place pile hole forming construction method, and particularly relates to the technical field of foundation pile foundation construction, and the method comprises the steps of S1, site leveling and pile position paying off, S2, 1.2 m drill bit rotary digging hole forming, S3, backfill tamping, S4, 1 m drill bit rotary digging pile machine hole forming, S5, hole cleaning, S6, reinforcement cage manufacturing and mounting, S7, guide pipe placing, S8, secondary hole cleaning and S9, pile body concrete pouring. According to the method, the super-thick backfill complex geology in-situ SDDC in-hole deep dynamic compaction and rotary excavating pile hole-forming construction technology is adopted, in a high-position backfill area, the SDDC in-hole deep dynamic compaction technology is used for forming a pile body cylindrical soil body with the diameter being 2-3 m and easy to form a hole in an original pile position, then the rotary excavating technology is used for forming a hole in a cylinder, the hole-forming quality of a pile foundation under the complex geology condition is guaranteed, and the construction efficiency is improved. The most suitable mechanical equipment can be reasonably selected for pile foundation equipment according to specific geological conditions, the construction cost can be reduced through the combined construction technology, and the pile foundation hole forming construction quality is guaranteed.

The invention relates to a method, device and equipment for determining the safety coefficient range of a karst cave slope and a medium. The method comprises the steps that the maximum value and the minimum value of the slope in the X direction and the Y direction are obtained; based on the maximum value and the minimum value of the slope in the X direction, the slope is divided in the X direction according to the vertical division interval, and a plurality of vertical units are obtained; based on the maximum value and the minimum value of the slope in the Y direction, unit bodies with random heights are generated in all the vertical units; according to the unit bodies, determining the distribution condition of the rock-soil body and the karst cave in each vertical unit, and constructing a slope karst cave simulation model; performing assignment calculation on the slope karst cave simulation model to obtain a slope safety coefficient; and a plurality of groups of slope safety coefficients are obtained through iterative calculation, and the range of the slope safety coefficients is determined based on each group of slope safety coefficients. Reliable data support can be provided for engineering design of the karst cave slope, and safety and engineering economy are both considered.

The utility model provides a deep foundation pit supporting structure, which relates to the technical field of foundation pit supporting and comprises an external Larsen steel sheet pile and a steel enclosing purlin positioned on the inner side of the Larsen steel sheet pile, and the inner side of the steel enclosing purlin is connected with a steel supporting piece through a steel cushion box; a plurality of layers of steel enclosing purlins are horizontally arranged, each layer of steel enclosing purlins is connected with a layer of steel supporting pieces, four sets of steel supporting pieces are arranged on each layer of steel enclosing purlins, and a set of steel supporting pieces is connected between the steel enclosing purlins on the inner sides of every two adjacent Larsen steel sheet piles. Each set of steel supporting pieces comprises at least two steel supporting pieces, each set of steel supporting pieces comprises a long support and a plurality of short supports, and the long supports and the short supports of each set of steel supporting pieces are arranged in parallel. The utility model has the beneficial effects of reasonable design, simple structure, safety and reliability, and can provide reliable support for different soil layers, improve the supporting effect and reduce the construction difficulty and cost.

The invention discloses a granite residual soil slope section structure optimization method which is applied to the technical field of slope prevention and control. Comprising the steps that S1, geological drilling is conducted on a slope to be excavated, hydrogeological conditions are investigated to obtain relevant data of the slope, and the relevant data comprise stratum lithology, a slope body structure, an underground water level and a rainfall condition; s2, measuring physical and mechanical properties of stratum lithology according to the obtained side slope geological drilling core sample; s3, according to the height of the side slope, the stratum lithology, the land use red line and the surrounding environment, design parameters of the side slope stages, the slope ratio of each stage of the side slope, the height of each stage of the side slope and the platform width of the side slope to be excavated under different working conditions are designed; s4, obtaining slope stability coefficients corresponding to different working conditions based on S2 and S3, and obtaining an optimal section structure design working condition; s5, performing protection and retaining design on the slope to be excavated according to the principles of technology feasibility, economy, reasonability and ecological environmental protection on the basis of the step S4, obtaining a slope stability coefficient, and obtaining a protected slope section structure; and S6, on the basis of the S5, in combination with hydrogeology and meteorology, drainage design of the slope to be excavated is carried out, and finally an optimized slope section structure is obtained. According to the method, the long-term stability of the slope can be improved, better environmental adaptability and ecological friendliness are provided, engineering protection measures are reduced, and the construction and maintenance cost is reduced.

The invention relates to a prevention and drainage combined fabricated underground side wall waterproof node and a construction method, the node comprises a side wall and a prefabricated middle plate, the side wall comprises an upper prefabricated wall body, a lower prefabricated wall body, a pre-pouring wall body and a post-pouring wall body, and a side wall abutted seam is formed between the upper prefabricated wall body and the lower prefabricated wall body; a cast-in-place concrete construction joint is formed between the firstly-poured wall body and the later-poured wall body, the side wall abutted seam and the cast-in-place concrete construction joint are staggered, a water stop strip and a compression sealing body are arranged in a cushion layer of the side wall abutted seam, and a waterproof material, a water stop steel plate and water stop glue are arranged in the cast-in-place concrete construction joint. The connecting area of the prefabricated middle plate and the side wall is located on the top of the lower prefabricated wall body and is connected with the side wall by pouring concrete in the side wall and middle plate cast-in-place area. The problems that in an existing fabricated underground structure side wall and middle plate waterproof design, the joint waterproof effect is poor, construction is complex, and drainage measures are lacked are solved.

The utility model relates to the technical field of building construction, and discloses a soft soil deep foundation pit supporting structure for building construction, which comprises side plates, a plurality of fixing plates are fixedly connected to the opposite sides of the two side plates, bolts are in threaded connection to the opposite sides of the fixing plates, light steel is rotationally connected to the bottom ends of the fixing plates, and the bottom ends of the light steel are in threaded connection with bolts. And rotating blocks are rotationally connected to the opposite sides of the multiple fixing plates, supporting plates are rotationally connected to the opposite sides of the multiple rotating blocks, moving blocks are rotationally connected to the bottom ends of the multiple supporting plates, and sliding grooves are formed in the sides, away from each other, of the multiple pieces of light steel. According to the device, the stability of a soil body is enhanced by applying tensile force in advance through the first anchor rod and the second anchor rod, the fixing plates are connected through the multiple reinforcing rods, the construction process is simplified, the construction efficiency is improved, the threaded rods are driven to extend by rotating the rotary knobs on the two sides of the storage column, and therefore reinforcing treatment is conducted through the telescopic rods.

The invention discloses an anti-floating buffering flexible pool for a high underground water level. According to the invention, the anti-floating problem of the flexible pool body when the underground water level is relatively high is effectively solved through the interlayer structure. The interlayer material can automatically expand when the underground water level rises to form supporting force to resist the jacking effect of water buoyancy on the pond bottom, so that the pond body is prevented from floating upwards. Therefore, the application limitation of a traditional flexible pool body in areas with the high underground water level is broken through, the application range of the flexible pool body is widened, and the flexible pool body can be applied to more areas, especially occasions with poor foundations, the high underground water level and the high requirement for the water storage capacity. The anti-floating buffering flexible pool can effectively solve the problems in coastal areas, areas with rich underground water resources, urban underground spaces and the like, and a safe and reliable water storage solution is provided for the areas.

The utility model relates to the technical field of resin cartridge installation equipment, and provides an anchor rod trolley resin cartridge anchor rod swing installation device which comprises a propelling beam and an installation base, one end of the installation base is connected with the propelling beam, the other end of the installation base is rotationally connected with a rotary swing arm, and the installation base is provided with a swing motor used for driving the rotary swing arm to rotate. A guide pipe and a front feeding oil cylinder are arranged on the rotary swing arm, a coil feeding pipe is movably inserted into the guide pipe in a penetrating mode, a cylinder barrel section of the front feeding oil cylinder is fixed to the rotary swing arm, and a coil feeding clamping sleeve connected with the coil feeding pipe is arranged at the end of a piston rod of the front feeding oil cylinder. When the resin roll is installed, the roll feeding pipe communicated with the resin roll is fed into the anchor rod hole, the resin roll installation work is executed, the installation efficiency is improved, frequent equipment switching is avoided, and the engineering cost is reduced.

The invention belongs to the technical field of concrete, and particularly relates to high-specific-gravity self-compacting concrete and a preparation method thereof. The high-specific-gravity self-compacting concrete is prepared from the following raw materials in parts by mass: 560 to 671 parts of natural coarse aggregate, 725 to 906 parts of iron ore, 300 parts of natural fine aggregate, 446 parts of steel slag sand, 383 parts of cement, 0 to 54 parts of steel slag powder, 107 parts of fly ash, 2.6 to 13.6 parts of water reducing agent and 150 to 182 parts of water. The performance of the concrete is greatly improved by improving the microcosmic performance of the concrete and grading of all the components, and the purposes of reducing the use amount of cement, reducing shrinkage and creep of the concrete, reducing CO2 emission, saving energy, protecting the environment and achieving green construction are achieved while high specific gravity, self-compaction and high strength of the concrete are achieved.

The invention discloses a construction method for a cross partition wall of a tunnel ventilation inclined shaft and a combined type formwork trolley, and belongs to the technical field of tunnel construction methods and devices. The invention aims to provide the construction method of the inclined shaft cross partition wall and the combined formwork trolley which are reasonable in construction sequence, good in pouring quality and high in construction speed. According to the technical scheme, the construction method mainly comprises the steps that a cross partition wall is divided into a lower T-shaped partition wall and an upper T-shaped partition wall, pouring of the lower T-shaped partition wall is conducted firstly, then pouring of the upper T-shaped partition wall is conducted, in this way, longitudinal construction joints between the left transverse partition wall and the right transverse partition wall and the vertical partition wall are eliminated, and the construction quality of the transverse partition walls is guaranteed. The combined type formwork trolley comprises a left side transverse partition wall formwork trolley and a right side transverse partition wall formwork trolley which are used for pouring a lower T-shaped partition wall, and a left side vertical partition wall formwork trolley and a right side vertical partition wall formwork trolley which are used for pouring an upper T-shaped partition wall. The method is used for pouring the cross partition wall of the tunnel ventilation inclined shaft.

The utility model discloses a power transmission line metal assembly type foundation in plug-in connection, and relates to the technical field of high-voltage power transmission line foundations. The support comprises insertion type angle steel, four support main materials and a foundation slab, the two support main materials form two support main material sets, each support main material set is of a herringbone structure, the upper ends of the support main materials are connected with the lower ends of the insertion type angle steel through bolts, and the lower ends of the support main materials are connected with the foundation slab; the foundation slab comprises two foundation slab main beams and a plurality of foundation slab secondary beam groups; the section type of the foundation slab girder is channel steel. According to a metal assembly type foundation of an existing power transmission line, tower legs and the foundation are mainly connected through tower base plates, and the connecting mode has the problems that the node structure is complex, the node economy is poor, and the precision requirement is high during machining, construction and assembly. The tower legs and the foundation slab are connected through the insertion type angle steel, the node structure is simple, the node economy is good, and the precision requirement is not high during machining, construction and assembly.

The invention discloses a non-explosive phase-change gas blasting method using water as a gas source substance, which comprises the following steps: filling an exothermic agent through an exothermic agent container made of a metal material, and inserting an igniter into the exothermic agent container on a construction site; then the assembled heating pipe and the gas source substance water contained in the metal container are respectively contained in a high-pressure-resistant cracking device, then the installed cracking device is installed in a blast hole, finally, a wire connected with an igniter is led out of the blast hole to be connected with a detonating device, and detonating can be achieved after a detonating device is powered on. Water is used as a gas source substance, and no toxic gas harmful to the environment is generated after blasting; when the device is used in tunnel and mine underground roadway tunneling engineering, the next working procedure can be carried out without ventilation after blasting, and the efficiency is doubled; according to the invention, a non-explosive phase change gas blasting technology can be used for segmented networking blasting.

The invention relates to the technical field of ecological restoration and water resource management, in particular to a novel brick material based on corn straw as well as a preparation method and a use method of the novel brick material, and provides the novel brick material based on the corn straw in order to solve the problems of high water loss speed and slow ecological restoration of peat land. Comprising the following raw material components: corn straw powder, corn straw charcoal, calcium bentonite and corn stigma fiber, the corn straw powder, the charcoal, the calcium bentonite and the corn stigma fiber are mixed according to a specific proportion, and the mixture is subjected to compression molding to prepare the brick with good moisture retention performance and ecological compatibility. The method is specially used for water retention and vegetation recovery of the peat land.

The invention relates to a pavement paving optimization control method and system of a full-automatic paver and a medium, and the method comprises the following steps: U1, the paver travels to a pavement construction area, data information of absolute elevation of a construction pavement is collected, temperature data information of the construction pavement is obtained in real time based on an airborne temperature sensor, and the temperature data information of the construction pavement is calculated; acquiring speed data information of the paver in real time based on an airborne speed sensor, acquiring flow data information of spread materials in real time based on an airborne flow sensor, and acquiring vibration frequency data information of the paver; and U2, establishing a first target correlation function G based on the data information of the absolute elevation of the construction pavement, the temperature data information of the construction pavement and the speed data information of the paver. According to the paver, the speed of the paver, the flow of paving materials and the vibrating frequency of the paver can be optimized, the flatness and the uniformity of pavement paving are improved, and the waste of the paving materials is reduced, so that the cost is saved, and the engineering cost is reduced.

The utility model discloses an inclined steel pipe pile support with pit bottom pressure reduction and bidirectional grouting functions, and belongs to the field of building construction. The inclined steel pipe pile support sequentially comprises a top conventional section, a middle grouting section, a bottom pressure reduction section and an end grouting head from top to bottom. And a plurality of grouting pipes are uniformly fixed on the inner sides of the top conventional section, the middle grouting section and the bottom pressure reducing section in the circumferential direction. A plurality of lateral grouting holes used for lateral soil reinforcement are formed in the side wall of the middle grouting section at intervals in the axial direction of the lateral grouting pipe; a plurality of filter holes for releasing the pressure of the confined water are formed in the side wall of the bottom pressure reducing section. The end grouting head is of a conical structure for reducing resistance; and an end grouting hole communicated with the end grouting pipe is formed in the end grouting head. The inclined steel pipe pile support has the functions of pit bottom pressure reduction and two-way grouting, and the number of pressure reduction wells in a pit can be remarkably reduced. In addition, after large-scale pouring of the bottom plate is completed, the inclined steel pipe pile support can be pulled upwards to be recycled.

The application discloses a water pump performance curve correction method based on a similarity principle, relates to the technical field of water pump working condition analysis, and comprises the following steps: acquiring a conversion working condition point corresponding to a model pump test working condition point converted to a prototype pump and a theoretical performance curve of the prototype pump; confirming a similarity parabola passing through the field measured working condition point and mapping the similarity parabola to the theoretical performance curve of the prototype pump to obtain an intersection point as a similarity working condition point of the field measured working condition point according to a similarity parabola relationship and field measured working condition point data; obtaining a corresponding point under a theoretical rotating speed according to the similarity relationship and combining the working condition point on the theoretical curve of the prototype pump; replacing the theoretical rotating speed with a measured rotating speed, converting to a corresponding point under a rated rotating speed, and fitting to obtain an actual flow-head curve; and acquiring a theoretical efficiency value and an optimal efficiency value corresponding to the similarity working condition point to obtain an actual flow-efficiency curve, so that the actual performance curve of the prototype pump can be efficiently and accurately corrected.

The utility model discloses a boiler flue gas duct for fine construction, which belongs to the field of boiler flue gas ducts and comprises a flue gas duct wall, a support plate, support legs, a clamping plate, an angle steel belt, a thermal insulation layer, a reinforcing mesh and a protective layer. The specification and the size of the flue wall are determined according to data statistics, uniform blanking, prefabrication and splicing part division are carried out, finally hoisting and assembling are carried out on site, after the flue wall is assembled and spliced, the heat preservation layer is installed on the flue wall, and the heat preservation layer carries out heat preservation and heat insulation on the flue wall. The reinforcing mesh on the inner side of the heat preservation layer can increase the firmness of the heat preservation layer plate and prevent the heat preservation layer from cracking, the protection layer is fixed to the clamping plate after the heat preservation layer and the clamping plate are installed, the functions of rain prevention, wind shielding and the like are achieved for the clamping plate and the heat preservation layer, fine construction is conducted on installation of the smoke and air duct, and the smoke and air duct has enough strength, rigidity and stability. Strong vibration is avoided, the construction quality is improved, and the construction efficiency is guaranteed.

The present application relates to a method for predicting fatigue crack propagation rate of a diffusion bonded dissimilar titanium alloy laminate structure, which is based on the mechanical properties of the constituent materials of the dissimilar titanium alloy laminate structure, i.e., the quasi-static tensile properties of the two titanium alloy plies. The method for predicting fatigue crack propagation rate of the diffusion bonded dissimilar titanium alloy laminate structure first establishes the relationship between the fatigue crack propagation rate of the laminate structure and the mechanical properties of the laminate structure, and then establishes the relationship between the mechanical properties of the laminate structure and the mechanical properties of the dissimilar titanium alloy single ply, thereby describing the relationship of the fatigue crack propagation rate of the laminate structure. Compared with the prior art, the method of the present application has the advantages of simple and convenient test, engineering precision, rapid and practical, etc., and effectively reduces the test cost and test time required for crack propagation test of the dissimilar titanium alloy laminate structure processed from different parameters.

The utility model discloses a through netlike inhaul cable large-span arch bridge design and construction device which comprises a bridge floor, arch ribs and air cylinders, the arch ribs are arranged on the bridge floor in a bilateral symmetry mode, straining beams are correspondingly arranged on the left side and the right side of the bridge floor, a plurality of inhaul cables are arranged between the straining beams and the arch ribs, the inhaul cables are crossed to form a netlike structure, and the air cylinders are detachably arranged on the tops of the straining beams. The driving end of the air cylinder is connected with the bottom of the inhaul cable which is telescopic through the air cylinder. A plurality of air cylinders are installed at the top end of the straining beam, the air cylinders are connected with the tail ends of the inhaul cables to stretch out and draw back the inhaul cables, the inhaul cables stretch out and draw back to adjust pulling force between the arch rib and the straining beam, a better stable structure is achieved, and installation is convenient and fast. The fixed seat of the cylinder is detachably combined, so that the maintenance, assembly and disassembly are convenient, and daily maintenance is convenient; end cross beams are arranged at the front end and the rear end of the bridge floor, cross-shaped cross beams and longitudinal beams are arranged in the middle, and orthogonal special-shaped plates are poured, so that the bridge floor is stable and does not need to be supported by bridge piers; the device is novel in structure, high in practicability and suitable for popularization.

This utility model discloses a perforated brick wall structure that eliminates the need for a main keel support and is related to the field of building wall construction technology. It includes a perforated brick wall with horizontally and vertically spaced concrete embedded blocks. U-shaped screws are embedded within each concrete embedded block, and horizontal angle steel secondary keels are connected to the U-shaped screws. The ends of the horizontal angle steel secondary keels are connected via vertical angle steel secondary keels, and L-shaped dry-hanging fasteners are connected to the horizontal angle steel secondary keels. This utility model, by embedding concrete embedded blocks in the perforated brick wall, not only enhances the overall stability of the wall but also allows for the embedding of U-shaped screws within the blocks and the construction of a new support system using horizontal and vertical angle steel secondary keels. This significantly reduces the need for a main keel, effectively reducing the burden on the wall and lowering construction difficulty and cost.

The utility model relates to the technical field of UVA curing, in particular to a UVA industrial curing module which comprises a circuit layer, a heat conduction and dissipation copper substrate, a box dam layer, a circuit layer, a UVLED chip and an optical lens, and the circuit layer on the heat conduction and dissipation copper substrate is provided with six evenly-distributed light-emitting areas. The 24 UVLED chips are fixed on the circuit layer through elargol in a Die-bonding mode, then electrodes of the UVLED chips and lead pins are conducted through gold threads in a Wire-Bonding mode, a whole column of six 2 * 2 LEDs connected in series is formed, the optical lens is installed above the UVLED chips to change the focusing focal length, and the UVLED chips are fixed on the circuit layer in a die-bonding mode. Heat generated by light emitting of the UVLED chip is conducted to the radiator through the heat conduction and heat dissipation copper substrate below, UV light emitted by the UVLED chip can be used for curing the light sensation material, and due to the fact that the curing time of light curing is short, a pipeline of one meter can be repaired within several minutes, and compared with several hours of excavation type repairing, the engineering time and cost can be greatly reduced.

The application discloses a large-aperture spliced telescope optical system and an imaging method, and belongs to the technical field of optical engineering. The system comprises coaxially arranged first, second and third RC systems, the curvature radii of the primary mirrors of the three sets of systems are different from each other, the curvature radii of the secondary mirrors are different from each other, and the total focal lengths are uniform. External light beams are converged to the same focal point after being reflected once by the three layers of primary mirrors and reflected twice by the corresponding secondary mirrors. According to the application, the aberration of the light beams in different off-axis regions can be independently corrected through the differential curvature multi-group coaxial RC architecture, and the full-field imaging approaches the diffraction limit. The light path parameters of each group are independently adjustable, the control precision of the wavefront consistency is higher, the local light path maintenance and upgrading do not need to replace the whole element, and the engineering use cost is lower. The matching imaging method completes the aberration correction in two stages, the final imaging spot energy is concentrated and free from distortion, and is suitable for astronomical observation, deep space exploration and high-precision imaging of space targets.

This application provides a call detail record (CDR) billing method, apparatus, device, and computer storage medium. The CDR billing is applied to a first billing system and includes receiving a resource allocation request sent by a second billing system based on a target billing CDR. The resource allocation request includes resource usage information from the target billing CDR and information about cross-provincial billing users in the target billing CDR. If it is determined that there are remaining resources in the first communication resource in the first billing system, the remaining resources of the first communication resource are deducted based on the resource allocation request and the resource usage information of the target billing CDR to obtain deduction result information. The deduction result information is sent to the second billing system so that the second billing system can deduct and bill resources whose resource usage exceeds that of the first communication resource based on the deduction result information. According to this application embodiment, it satisfies the requirement of sharing communication resources within packages across multiple provinces while reducing engineering costs and technical difficulty.

The invention discloses a cantilevered maintenance work platform for a head car of a centralized power train set, which is characterized in that: it is used to renovate an existing maintenance shed and track of a passenger maintenance station, and comprises a cantilevered maintenance work shed, a contact network arm (2), a middle-level operation platform, a top-level operation platform, a suspended lightweight protective net (5) and existing maintenance shed columns (6); the contact network arm and the two-layer maintenance work platform on one side of the track to be renovated are installed thereon by using the existing maintenance shed columns; the cantilevered maintenance work shed and its columns are arranged on the opposite side of the renovated track, and the contact network columns on the opposite side share a passage with the cantilevered maintenance work shed columns, thereby solving many technical problems such as the contradiction between renovation and operation, and the contradiction between high standards and economy, and achieving a balance between reducing engineering costs and improving work efficiency.

The utility model relates to the technical field of water tanks, and discloses a modularized water tank. The technical problems that in the prior art, the capacity of an integral box body is fixed, flexible adjustment is inconvenient to conduct according to actual requirements, and meanwhile installation, carrying and maintenance are difficult are solved. The water tank assembly comprises a plurality of spliced water tanks, at least one side surface of each water tank is provided with a hole site, the hole site is pre-embedded with a thread of a steel plate bolt, other side surfaces of each water tank are provided with a boss or a limiting clamping groove for accommodating the boss, and each water tank is provided with at least one water inlet and at least one water outlet. The modularized water tank integrates the functions of convenient modularized installation, efficient automatic cleaning, all-around spraying cleaning, accurate liquid level monitoring and the like, the comprehensive performance and the use experience of water tank equipment are greatly improved, and the modularized water tank has very high practical value and popularization prospects.