43results about How to "Reduce demolition costs" patented technology

The invention discloses an environment-friendly demounting method of gas tank. The environment-friendly demounting method of gas tank comprises the steps of treating the chemical residues in the tank,separating the tank top in a high-altitude manner, declining the tank top, fixing the tank top, cleaning the chemical residues on the tank wall, cutting the wall plates and handling the wall plates and the like. The invention decreases the dismounting cost of the gas tank, improves the dismounting efficiency, realizes separation of working district and surrounding environment, ensures safety andenvironment protection in the dismounting process, avoids serious water system and environment pollution accidents occurring in the dismounting process, and does not influence the regular production of surrounding factories.

The invention discloses a high-altitude dismantling method of inside-climbing tower crane for towering structure construction, which can effectively lower the dismantling cost of an inside-climbing tower crane and lower dismantling operation risk. The high-altitude dismantling method of inside-climbing tower crane for towering structure construction firstly dismantles a cargo boom and a balance arm and then dismantles a tower body; the derrick mast mechanism with a strut bar and a hoisting line guide mechanism is arranged on the cargo boom and the balance arm; the derrick mast mechanism and the hoisting line are used to dismantle the cargo boom and the balance arm by sections from outside to inside. The derrick mast mechanism is adopted to operate on the cargo boom and the balance arm to dismantle the cargo boom and the balance arm, and does not need to arrange other auxiliary equipment on a building so as to greatly lower the dismantling cost of the tower crane and improve the removing work efficiency; the last quarter tenon end parts of adjacent two cargo booms and adjacent two balance arms are arranged into circular arc structure, thus improving stability and safety in the dismantling process; the method is especially suitable for being popularized and used in dismantling various inside-climbing tower cranes.

The present invention relates to the technical field of tunnel construction, in particular to a method for dismantling an inverted arch, comprising the following steps: Step 1: setting a plurality of first blastholes perpendicular to the surface of the inverted arch, and the first blastholes are arranged along the transverse direction of the tunnel and the longitudinal direction of the tunnel Arrangement, setting a detonator in the first blast hole; step 2: detonate the detonator in batches and then remove the inverted arch, and the mileage of the inverted arch removed by each detonation is less than one-third of the total mileage of the secondary lining in the demolition area. In the present invention, the inverted arch mileage of each detonation demolition is designed to be less than one-third of the total mileage of the secondary lining in the demolition area, so that the structure of the secondary lining will not be damaged during each detonation demolition, thereby eliminating the need for further The rebuilding of the secondary lining reduces the cost of demolition and reconstruction, and speeds up the construction progress.

The invention discloses a method for dismantling a concrete structure of an existing rolling line underground space, belonging to the technical field of metallurgical production equipment installation. Provided is a method for dismantling the existing rolling line underground space concrete structure, which can quickly, efficiently and safely dismantle the existing rolling line underground space concrete structure without stopping production. The dismantling method is based on the actual situation of the concrete structure in the underground space to be dismantled, and after determining the bearing support point and the dismantling area in combination with the conditions of the rolling production line to be installed in the subsequent sequence, and then adopting the method according to the on-site hoisting and transportation capacity and the condition of the hoisting space. The wire saw cutting method is used for demolition. During the demolition process, it is only necessary to drill sawing holes and erect corresponding support brackets on the concrete structure of the underground space according to the determined maximum weight, maximum shape and demolition sequence of each concrete block. 2. The concrete structure can be sawed into concrete blocks and transported out of the production site of the existing rolling line through ropes.

The invention discloses a concrete stirring system which comprises a stirring device (1), a control unit, a ground cylinder (2), a second warehouse group (3) and a transmitting device (5), wherein a first warehouse group (11), a material weighing and transmitting device and a stirrer (13) are arranged on the stirring device (1); and materials in the ground cylinder (2) are conveyed to corresponding warehouses of the second warehouse group (3) through the transmitting device (5), and materials in the second warehouse group (3) are conveyed to corresponding warehouses of the first warehouse group (11) through the transmitting device (5). The concrete mixing system disclosed by the invention can be temporarily arranged in a construction site, and is capable of efficiently producing large amount of concrete to adapt to demands of high-rise buildings.

The invention discloses a symmetrical double-rotation blasting method. The symmetrical double-rotation blasting method comprises the following steps of: (1) completely dismantling construction objects inside a cooling tower; (2) arranging load reducing windows on the ring beam of the cooling tower and an upper barrel body, and arranging disintegration windows at the upper parts of the load reducing windows; (3) forming blast holes on the parts without the load reducing windows on a herringbone supporting leg and the ring beam, and arranging conducting tube detonators and explosive in the blast holes; and (4) detonating two points in central symmetry on the bottom circle center of the cooling tower at the same time, wherein the two detonating points are simultaneously and symmetrically rotated at constant speed explosion along clockwise or counterclockwise direction to form two instantaneous blasting openings. According to the method, surrounding facilities can be prevented from being damaged, and the cooling tower is good in disintegration effect, the dismantling cost is reduced, the method is applicable for blasting and dismantling cooling towers under various complicated conditions, the engineering investment can be saved, and the engineering process is quickened.

The invention discloses a non-excavation reverse dismantling method for an ultra-deep vertical shaft. The non-excavation reverse dismantling method comprises the following steps that (1) sealing, water stopping and reinforcing are conducted on a soil body around the ultra-deep vertical shaft and within a set range below the bottom of the ultra-deep vertical shaft; (2) an observation and emergency standby well is drilled in the periphery of the outer side of the reinforced soil body around the vertical shaft; (3) dismantling the internal structure of the vertical shaft layer by layer from top to bottom to guarantee a dismantling working face; when the internal structure of the vertical shaft is dismantled, the supporting structure mainly comprising the vertical shaft outer wall structure is dismantled layer by layer and confirmed to meet the design requirement layer by layer; (4) after the reinforced soil body below the vertical shaft reaches the design strength, a vertical shaft bottom plate is dismantled; (5) timely backfilling and tamping after the bottom plate of the vertical shaft is broken; (6) vertical ring-dividing dismantling is conducted from the bottom of the vertical shaft, and transverse first ring blocks are symmetrically dismantled; (7) timely backfilling and tamping within the dismantling depth range; and (8) the steps (6)-(7) are repeated, and ring-by-ring dismantling and ring-by-ring backfilling are conducted from bottom to top till dismantling and backfilling are completed. The method is simple in construction, high in efficiency and capable of saving cost and shortening the construction period.

The invention discloses a twist-shaped road network system with trunks arranged in a mixed arrangement of driving on the right and on the left. A group of driving plane functional layers that are distributed in any order along the vertical space direction and are mutually forward and reverse driving directions. The driving plane functional layers include multiple intersecting two-way driving lanes, and the intersection of the two-way driving lanes is a road that only allows left turns or The intersection of right-turning roads and straight-going roads without conflict points, and the straight-going roads of two adjacent intersections in the same driving plane functional layer are in a cross distribution; the corresponding matching straight-going roads between two adjacent driving plane functional layers There is a jump lane corresponding to the driving direction between the lanes in the same direction between the roads. The invention allows the vehicle to run at high speed in the whole process without waiting for traffic lights, and allows the vehicle to go straight at a busy intersection and directly turn left and right without building an overpass.

The invention discloses a suspended magnetic levitation traffic rail system which comprises a supporting column. A rail beam with a downward opening is fixedly arranged at the top of the supporting column, lower fixed plates for surrounding a lower opening of the rail beam into a semi-enclosed structure are arranged on two sides of the opening of the rail beam, F-shaped steel rails for matching with U-shaped electromagnets of a magnetic levitation vehicle suspension frame system are fixedly arranged on the lower fixed plates, motor sensing plates for matching with linear motors of the magneticlevitation vehicle suspension frame system are fixedly connected on the lower surfaces of the lower fixed plates, and a power supply system for supplying power to a magnetic levitation vehicle is arranged in the rail beam. The invention further provides a suspension frame system for matching with the rail system, a suspended magnetic levitation vehicle comprising the suspension frame system and asuspended magnetic levitation system comprising the rail system and the suspended magnetic levitation vehicle. The suspended magnetic levitation system has the advantages of low cost and noise, highsafety and the like.