180results about How to "Reduce construction area" patented technology

The invention relates to the field of production of prefabricated components, in particular to a three-dimensional production system of the prefabricated components. The system comprises a prefabricated component production area on the upper layer, a maintenance area on the lower layer and a wheel type mold table; the prefabricated component production area includes a component prefabrication operation area, a component demolding operation area and an edge mold cleaning operation area; the maintenance area is provided with a linear maintenance kiln; the components are borne on a production line in the prefabricated component production area through the wheel type mold table, and move in the linear maintenance kiln in the maintenance area; a mold table ferry transverse moving station is arranged in the prefabricated component production area; a mold table lifting transverse moving device is arranged on the mold table ferry transverse moving station; a special production line and a production secondary line are arranged in the component prefabrication operation area; and the special production line drives the wheel type mold table to transversely move through the mold table lifting transverse moving device so as to connect with the production secondary line in parallel. The system comprehensively improves a prefabricated component production system, can realize multiple production modes, is more flexible in production, and greatly improves the production efficiency.

The invention relates to a method for screening and dewatering urban sludge efficiently. Sludge in an urban wastewater treatment plant is conveyed to a self-synchronizing translation elliptical vibrating screen for dewatering and screening, and then the urban sludge is dewatered efficiently by a method of a combination technique of chemical agent concentration, liquid tempering and box-type filter pressing. After the method detects the concentration of the sludge automatically, dosing amount is calculated and medicament is automatically added to realize automatic dosing; and a filter pressing and dewatering process can meet the requirements of the modernized wastewater treatment plant, the full automatic operation of a system can be implemented by the control of a PLC system, and operations, such as charge-in, the movement of a filter board, segmental filter pressing, positive and negative aeration, filter cloth flushing, unloading and the like can be completed by the remote control of the PLC so as to relieve the labor intensity of workers. Because of the successful adoption of a segmental filter pressing technique of low-pressure filtering and high-pressure extrusion, the operating efficiency is 2 to 3 times that of the conventional plate-and-frame filter press; and after the sludge is dewatered, the water contents of mud cakes of the urban sludge screened and dewatered by the method are reduced to below 60 percent.

The invention discloses a rapid shuttle single-tunnel double-decker subway, a train running space configured by shuttle tunnels with a upper and a lower track and double stereo train stations, the subway herein requiring less land occupation and digging work load. According to the subway herein, lines are composed of express lines, train stations, and launching lines, allowing separation of trains which are running from trains which stop for allowing passengers to get on and get off. The subway herein allows changes to train tracking operation, launches of express shuttles as needed, reduction of stops, and increasing of train operating density and running velocity. The subway herein also allows using train hooks to conduct rapid train re-arrangements, increasing train re-arrangements in peak time, operating non-stop trains or limited-stops trains so as to increase passenger capacity. The subway herein further allows decreasing of train re-arrangements in normal time or low peak time in a manner whereby trains stop at each and every train station so as to reduce operation cost. According to the subway herein, a recessed bottom train frame structure is adopted in the train for reducing train height and center of gravity, and tunnel diameter is decreased. By planning of different passenger capacities, selecting different train re-arrangements, and adopting various running patterns based on passenger flow time frames, the subway herein obtains an improved cascade-type passenger capacity ranging from 10,000 to more than 90,000 per hour for a single direction. The rapid shuttle single-tunnel double-decker subway of the invention adjusts to capacity demands in megacities, and can reduce starting-point requirements for building subways, like size of city passenger flow and population.

The invention provides a thallium-containing wastewater strongly oxidizing, coagulating, adsorbing and recovering process. The process includes the following procedures: thallium-containing wastewater concentration, pH regulation, strong oxidization, coagulation, flocculation, precipitated sludge treatment, pH regulation, solid impurity filtration, removal of Zn, Pb, Cd and Tl, and the like. The process has the beneficial effects that the process has the advantages of advanced technology, maturity, good effluent quality, stability in operation, conciseness in process, strong practicability, easiness in start and stop, convenience in maintenance and management, small investment, low operating cost, small floor area for construction, short construction period and large application ranges of projects; treatment of heavy metal ion polluted sewage is not limited by temperatures; the limitation that a biological method can not be used in cold regions in the north can be overcome.

The method of repairing local damaged coating on metal surface includes cleaning and polishing damaged part; spraying primer and polishing the area of 4-5 times of the primer area; spraying color lacquer to the area of 2-3 times of the primer area; painting varnish in the area of 1-1.2 times the color lacquer area; spraying the edge of varnish area with interface solution; and final polishing. The said technological process is suitable for repairing all painted metal surface, such as automatic, motorcycle, ship, etc. and can reach natural fusion with original coating.

The invention discloses a subway station body structure and a four-joint-arch PBA underground excavation construction method thereof. The subway station body structure comprises a station inner body structure, multiple left piles, multiple right piles, three sets of middle columns, middle plates and body arches. The body arches are four-joint arches. The construction method comprises the steps of pilot tunnel excavation and primary support; horizontal base and bottom longitudinal beam construction; side pile and middle column construction; crown beam, top longitudinal beam and pilot tunnel inner arch section construction; first and third arch section primary support buckle arch construction; second and fourth arch section primary support buckle arch construction; secondary lining structure construction of first and third arch sections; secondary lining structure construction of second and fourth arch sections; excavation of the upper portion of the station inner body structure, and secondary lining construction of the middle longitudinal beams, the middle plates and the upper portion of the side wall; earth excavation of the lower portion of the station inner body structure and secondary lining construction of bottom plates and the lower portion of the side wall. The construction is easy, the construction progress is fast, the subway station body structure constructed and formed is firm, and the using effect is good.

The invention discloses a construction method for controlling the two-dimension jacking of a large-scale case. The method comprises the following steps: all the large-scale cases are previously arranged in a foundation pit at one side of a railway which needs to be paved with a frame bridge under a condition that the underway existing railway normally runs; after a first section of the large-scale case is jacked, all the remaining large-scale cases are transversely moved behind the first section of the large-scale case on by one; and then all the large-scale cases are jacked with the previously jacked large-scale case. In such a way, original buildings near a railway line do not need to be demolished, therefore, the invention not only has small construction occupied area and low cost but also greatly reduces interference to the surrounding environment and the existing railway cause by construction operation, reduces the demolishing quantities of the adjacent buildings caused by the construction, and effectively guarantees the normal running of the existing railway.

The invention discloses a preparation method for a composite microbial fertilizer with bioleached sludge. The method comprises following steps: taking half-dried bioleached sludge, mechanically grinding, sludge conditioning, fermenting in a reactor, drying, adding functional bacteria, and pelletizing and coating. The invention also discloses the composite microbial fertilizer which is prepared by the method discussed above with bioleached sludge. The composite microbial fertilizer contains organic matter, and nutrient elements which are essential for plant growth, such as nitrogen, phosphor and potassium. Because of the nutrient substances which are added in bioleaching processes and contain iron and sulfur, the composite microbial fertilizer also contains relatively abundant iron and sulfur, and can be used to provide nutrition for photosynthesis, and protein and nucleic acid synthesis of plant. The functional bacteria added into the composite microbial fertilizer possesses high stability and safety, and excellent ability for dissolving K and P. Compatibility of the functional bacteria is reasonable, and effective viable bacteria number is 0.025 billion per gram.

The invention discloses a pretreatment method for an anchor cable group penetrating through a shield driving fracture surface. The pretreatment method comprises the steps of adopting a warehouse-jumping method to construct an artificial wellhole of a preorder; arranging a working platform at a position where the anchor cable can be found, cutting off the anchor cable, and arranging a removing tool on the working platform; adopting the removing tool to loosen and drag out the anchor cable; backfilling the artificial wellhole and recovering the ground; adjusting the orientation and the diameter of the artificial wellhole of a postorder according to the residual anchor cable condition of the artificial wellhole of the preorder, but guaranteeing that a plum blossom connection is formed between the artificial wellhole of the preorder and the artificial wellhole of the postorder; repeating the steps above until all the anchor cables are removed. The pretreatment method adopts the warehouse-jumping method to dig the artificial wellhole and has a flexible hole arrangement, therefore, not only is construction area reduced, but also construction speed is improved; plum blossom connections are adopted between a number of artificial wellholes, continuous construction regions are formed on a shield path so as to ensure that all the anchor cables can be removed. The pretreatment method for the anchor cable group which passes through the shield driving fracture surface belongs to the field of anchor cable removing.

The invention discloses an assembly-type composite tube sea-water sea-sand concrete bridge pier. The structure of the bridge pier is composed of multiple composite tube sea-water sea-sand concrete column segments (100) which can be stacked, and the composite tube sea-water sea-sand concrete column segments (100) are connected into an entirety through back-tension prestressing force. The assembly-type composite tube sea-water sea-sand concrete bridge pier is characterized in that the composite tube sea-water sea-sand concrete bridge pier column segments are formed by composite tubes (1), sea-water sea-sand concrete (2), corrugated pipes (3), prestressing ribs (4) and anti-shear ribs (7), one or more pairs of protruding ribs (6) and grooves (5) are arranged between seams of every two composite tube sea-water sea-sand concrete bridge pier column segments, and the protruding ribs (6) and the grooves (5) are glued through a cementing material; each composite tube sea-water sea-sand concretebridge pier column segment (100) is provided with the corresponding corrugated pipe (3) in the height direction, and one or more prestressing ribs (4) penetrate through the corrugated pipes (3) of each column segment. The assembly-type composite tube sea-water sea-sand concrete bridge pier has the advantages that the bridge pier is good in durability, high in bearing capacity and good in corrosion resistance, the materials are easy to take, and the bridge pier is beneficial to sustainable development; meanwhile, the structure of the assembly-type composite tube sea-water sea-sand concrete bridge pier has the advantages that the structure can be prefabricated and transported in a large scale, is convenient to mount, short in construction period, low in energy consumption and little in environmental pollution, and can be suitable for marine engineering structural construction.

The invention discloses a concrete mixing and filling pump truck for mines. In the invention, a dry concrete mixed material feeder, a concrete mixer, a water supply system, a finished concrete conveying system, a hydraulic power system, a control system are all installed on a frame; rail wheels matched with rails are arranged at the lower end of the frame, and four support oil cylinders are arranged at the four corners of the frame. The mixer is a continuous double horizontal spindle concrete mixer used for realizing the continuous operation of concrete from dry material conveying to water supplying, mixing and conveying. The concrete mixing and filling pump truck for mines is small and flexible, does not need to be dissembled or assembled when moved in surface and underground operation, can work and be moved at anytime during working on the rails, and occupies small area in construction.

The invention provides an existing pipe gallery underground space and a supporting structure thereof and a construction method of the supporting structure. The method comprises the steps that soil around a pipe gallery is pre-reinforced, and supporting walls are arranged along the two sides of the pipe gallery; soil is excavated to the bottom level position of the pipe gallery, soil is drawn out below the pipe gallery in the length direction of the pipe gallery, so that multiple dispersed containing spaces are formed below the pipe gallery, and first support structures are arranged in the containing spaces; soil is excavated to the position below the pipe gallery, the first support structures are dismounted in sequence, meanwhile, plate-shaped second support structures are paved below thepipe gallery to replace the first support structures, and the second support structures are jointed to form a support plate to abut against the position below the pipe gallery; the underground space is excavated, and support piles are arranged according to the positions of structure piles in the design drawing of the newly-added underground space; and a bottom plate is poured at the bottom of theunderground space, and the bottom plate, the support piles and the supporting walls are connected into a whole. A construction foundation of a reverse building method is provided for excavation of theunderground space, and on the premise of guaranteeing that the existing pipe gallery is not influenced, the underground space is built.

The invention relates to a coupling method of MTO process and propane dehydrogenation process, and mainly solves the problems of low recovery rate of low carbon olefin, high equipment investment and large floor space in the prior art. The invention utilizes the method of coupling MTO process with propane dehydrogenation process, for a 1.8 million ton/year MTO device and 600,000 ton/year PDH device, the method utilizes the price advantage of methanol and propane, and depends on the existing equipment of MTO device to reduce the adding of new equipment, realizes the coupling of MTO and PDH, therefore, the light hydrocarbon recovery benefit is 22 million yuan/year, the equipment investment can be reduced by 523 million yuan, and the land occupation can be used by 1.8 hectares. The technical scheme well solves the problems, and can be applied to the coupling of MTO process and propane dehydrogenation process.

The invention discloses a simple buried installation fixed bracket and an installation method thereof. The simple buried installation fixed bracket comprises a column body, an installation ring which sleeves the column body, an installation hole which is formed in a middle position of the side surface of the installation ring, support rods which are arranged on the lower end edge of the installation ring, and upper and lower fixing legs or rotating fixing legs which are arranged on the tail ends of the support rods. By adopting the simple buried installation fixed bracket and the installation method thereof, simplicity in installation is realized, the manpower and material resources can be saved, the installation procedures can be simplified, the installation time can be saved, the installation efficiency can be improved, and the installation cost can be reduced; the support rod is recyclable, so that the recycling of the resources is realized, the construction area is reduced, energy conservation and environmental protection can be realized, flexibility in installation can be realized, upward unplugging, sinking and rotation can be prevented, the firmness degree is high, safety is high, and simplicity in maintenance can be realized.

The invention discloses a construction method of the vertical pipe jacking of an urban underground comprehensive pipe gallery tunnel, and belongs to the technical field of pipe gallery tunnel construction. The method comprises the steps of determining a target jacking area in the urban underground comprehensive pipe gallery tunnel; installing a sealing device around a soil layer of the target jacking area, and improving the grouting of the soil layer of the target jacking area; arranging a pipe jacking machine and a driving support assembly in sequence from top to bottom just below the targetjacking area; controlling the driving support assembly to drive the pipe jacking machine to jack upwards, and arranging a plurality of pipe joints in sequence between the pipe jacking machine and thedriving support assembly in the process until the pipe jacking machine is ejected out of the ground; fixing the plurality of pipe joints so as to form a jacking well; and removing the pipe jacking machine and the driving support assembly so as to complete the construction of the vertical pipe jacking of the urban underground comprehensive pipe gallery tunnel. According to the method, by constructing the underground vertical pipe jacking, the construction efficiency is improved, the construction area is reduced, and potential safety hazards of collapse and the like are avoided.

The invention discloses a printing and dyeing sewage classification treatment process. Printing and dyeing sewage is divided into two broad categories of chemical fiber sewage and cotton comprehensivesewage, the chemical fiber sewage is divided into two sub-categories of alkali-reduced sewage and chemical fiber general sewage, and then treatment is carried out; an alkali-reduced filtrate is incorporated into a chemical fiber general filtrate, subsequent physicochemical process is carried out after adjustment, a medicament can be effectively saved, and thus the operation cost is reduced; the cotton comprehensive sewage is subjected to alkaline process treatment, and is use as an alkali source for reversed adjustment of a mixed sewage III, and thus an alkali use amount of chemical fiber sewage can be saved; cotton desizing sewage, cotton printing sewage and cotton dyeing sewage are combined into one category of sewage, namely the cotton comprehensive sewage, the concentration of pollutants can be averaged each other through mixing of three kinds of sewage, and treatment difficulty is reduced; at the same time, a construction area is reduced; and a pH value of the cotton comprehensive sewage can be controlled centrally to create prerequisites for the next step of mixing with the mixed sewage III.