68results about How to "Continuous construction" patented technology

The invention discloses an underground space construction method and a supporting structure and belongs to the technical field of civil building engineering construction. According to the underground space construction method and the supporting structure, a launching shaft and a receiving shaft are firstly constructed, then an enclosing structure and waterproof curtain construction of a whole planned whole underground space are completed, a pipe curtain is constructed to enable a first underground layer to form a waterproof space, a soil body in the pipe curtain is reinforced till the supporting structure is formed, excavation and supporting are carried out till a pipe curtain section is excavated to be through, meanwhile a structural body of the first underground layer is casted, and soil taking openings are reserved when base plate structure slabs of the first underground layer are cast; excavation of a soil body and casting construction of a structure body of a second underground layer are performed through the soil taking openings formed in the base plate structure slabs of the first underground layer after maintenance of the next underground layer of base plate structure slabs is completed, and soil taking openings are reserved when the base plate structure slabs of the second underground layer are cast; the cycle is repeated to perform following construction layer by layer till casting of the base plates of the whole underground space is completed, and accordingly construction of the underground space is completed.

The invention discloses a seawater-based fracturing fluid for fracturing a sea high-temperature oil-gas reservoir and relates to the technical field of cross-linked gel fracturing fluid. The seawater-based fracturing fluid comprises a base solution, a cross-linking agent and a thickening agent, wherein the base solution comprises the components (in percentage by weight) in terms of the weight of the prepared seawater-based fracturing fluid total solution as follows: 0.3%-0.8% of thickening agent, 0.1%-0.3% of pH regulating agent, 0.1%-0.5% of discharge aiding agent and the balance being seawater; relative to the mass fraction of the base solution, the cross-linking agent is 0.4%-0.6%; and the thickening agent refers to guar gum, carboxy-methyl hydroxypropyl guar gum, hydroxypropyl guar gum, fenugreek gum or sesbania gum. The seawater-based fracturing fluid is adopted, so that the dissolving speed of the thickening agent is quick, and therefore, direct mixing and continuous constructing can be realized, and therefore, the seawater-based fracturing fluid is in particular suitable for the fracturing construction of the sea high-temperature oil-gas reservoir. Meanwhile, the fracturing fluid can be continuously sheared for 90 minutes under the conditions of 150 DEG C and 170s<-1>, so that the viscosity is kept to be 70mPa.s or more.

Described is a method for the production of an insulated stator winding for rotating electrical machines, in particular, direct current machines and alternating current machines, whereby an insulated stator winding is produced that ensures adequate insulation over the intended life span of the electrical machine. The insulated stator winding is constructed of at least one electrically conductive conductor bar (2) with an essentially rectangular cross-section, whereby at least one electrically insulating shrink-on sleeve (64) with an essentially rectangular cross-section is applied to the periphery of the conductor bar (2) and then shrunk onto it.

The invention provides a paver and relates to the field of pavement engineering machinery. The paver comprises a main frame, a buffer cylinder mounted on the front end of the main frame, a swing beam mounted behind the buffer cylinder at the front end of the main frame, an electric appliance control system, a screed plate on the rear end of a draft arm, main frame connecting columns, a road shoulder distributor and a road shoulder forming machine, wherein the main frame connecting columns are correspondingly arranged on the left and right sides of the main frame and behind the swing beam; the road shoulder distributor is arranged between the swing beam of the main frame and the buffer cylinder mounted on the front end of the main frame; the road shoulder forming machine is mounted on the side surface of the screed plate. The paver is capable of completing paving, leveling and punning in one step during road shoulder filling, is simple and convenient to operate and is capable of carrying out continuous construction, the construction quality is improved and the cost is saved.

An exterior vehicle door is guided in a sliding manner in guide rails. At least one guide rail is provided which is mounted fixedly on the vehicle body and which includes a first section extending diagonally to the door plane and a second section extending approximately parallel to the door plane. A door guide rail is arranged on the vehicle door in the region of its lower edge. The body-mounted door rail is arranged in the region of an upper edge of the vehicle door.

The invention discloses a control system for integrated synchronous jacking of a cut pier and a control method. The control system comprises two hydraulic jacking devices for providing jacking power, two hydraulic circuits connected with the two hydraulic jacking devices respectively, two oil feeding amount adjusting devices and a jacking balancing state monitoring device, wherein the two oil feeding amount adjusting devices are installed on the two hydraulic circuits respectively, and the jacking balancing state monitoring device performs real-time monitoring to a balancing state of a structure needing to be jacked in the jacking process and controls the two oil feeding amount adjusting devices according to monitoring results. The control method comprises the steps of jacking preparation and jacking, upward jacking is performed to the structure through the two hydraulic jacking devices in actual jacking until the structure is jacked to a preset height, and timely dynamic deviation rectification is carried out to the structure. The control system for integrated synchronous jacking of the cut pier and the control method are reasonable in design, high in automation, good in coordinating performance and safety performance and simple and convenient to control, enables the jacking process to be smooth and efficient, and can effectively solve the construction problem that unbalanced elevation discrepancy limitation in the pier cutting integration jacking process cannot be automatically controlled.

The invention relates to an anchor rod for measuring tunnel floor heave large deformation, which is composed of a tail rod piece, a multi-section middle rod piece and a head rod piece which are connected; wherein the tail rod piece is connected with the tail of the multi-section middle rod piece, the head rod piece is connected with the head of the multi-section middle rod piece. The tail rod piece, the multi-section middle rod piece and the head rod piece of the anchor rod are sheathed and then anchored into drilled holes; the height from the tail rod piece to the tunnel top is measured, tunnel height changes such as excessive tunnel floor heave are measured in real time; after bottom canch cleaning is finished, the rod pieces completely exposed out of the ground are taken down, the remaining rod pieces still have certain length exposed. Length of rod pieces taken down is accumulated and height to the tunnel top is initially measured, thus obtaining tunnel floor heave deflection. The multi-section measuring anchor rod is convenient to follow-up observation and does not affect pedestrians and construction inside the tunnel. The anchor rod can be repeatedly used and the measuring anchor rod dispenses with mounting trays, screw nuts and the like. The anchor rod and the method of the invention feature simple structure, convenient construction, easy maintenance, continuous measurement and high accuracy.

The invention relates to the technical field of shield construction, in particular to a construction method for an earth pressure balance shield to pass through a large-diameter sewage main pipe underground, and is used for solving the problems of high construction difficulty, high risk and great casualties and economic loss easily caused by improper control when the shield passes through the large-diameter sewage main pipe underground in the prior art. The construction method comprises the following steps that 1, engineering investigation is carried out, an underwater color television and a geological radar are adopted; 2, the mutual influence of a tunnel and a sewage pipe is predicted, deformation analysis is carried out by adopting a stratum I structure model; 3, construction preparation before underneath pass is carried out, comprehensive statistical analysis is carried out by adopting a 60m experimental section; and 4, shield underneath pass tunneling is carried out, and stratum settlement is controlled through a clay shock method. According to the construction method for the earth pressure balance shield to pass through the large-diameter sewage main pipe underground, the construction difficulty and the corresponding risk can be effectively reduced through engineering investigation, prediction of the mutual influence of the tunnel and the sewage pipe, construction preparation before underneath pass and shield underneath pass tunneling, and therefore casualties and economic losses can be reduced.

The invention discloses a special roof-spraying waterproof material. The special roof-spraying waterproof material is prepared from, by weight, 400-550 parts of emulsion, 80-120 parts of silica powder, 300-400 parts of calcite powder, 40-60 parts of rutile titanium dioxide, 30-50 parts of deionized water, 2-4 parts of dispersing agent, 2-4 parts of defoaming agent, 1.5-2.5 parts of preservative, 0.8-1.2 parts of ultraviolet light absorber and 0.8-1.2 parts of anti-aging agent. A preparing method of the special roof-spraying waterproof material includes the steps that the silica powder, the calcite powder, the rutile titanium dioxide, the deionized water, the dispersing agent, the defoaming agent, the preservative, the ultraviolet light absorber and the anti-aging agent are stirred to be even at a high speed, the emulsion is added at a low speed, the mixture is stirred to be even, and the special roof-spraying waterproof material is obtained through filtering. The emulsion is acrylic emulsion or a mixture of acrylic emulsion and aliphatic-series waterborne polyurethane emulsion or a mixture of acrylic emulsion and waterborne epoxy resin emulsion. The special roof-spraying waterproof material is mainly used for water resisting of roofs.

The invention aims at the shortcomings that the current culture stones are heavy in weight, high in cost or poor in thermal insulation properties and have poor bondability with the building blocks, masonries and the like, are easily spalled, have short service lives and the like, and provides a rigid polyurethane foam (RPUF) culture stone and a production method thereof. The RPUF product with goodbondability, good thermal insulation property, light materials and long service life is obtained by improving the culture stone raw materials, production steps and technological conditions, which issuitable for the indoor and outdoor decoration in various environments.

The invention provides a sliding installation method for a large span section steel beam. The sliding installation method comprises the steps that two sliding rails are installed on the two sides of the section steel beam to be installed and positioned respectively; rail ribs are arranged on the sliding rails; base plates arranged on the rail ribs and used for bearing the section steel beam are arranged in the sliding rails; the section steel beam arranged on the base plates is arranged on the two sliding rails in a span mode; turning supports and pulleys arranged on the turning seats are installed at the ends of one sides of the sliding rails; winches used for driving the section steel beam to slide are arranged, and steel wire ropes of the winches penetrate through the pulleys and then are tensioned to the base plates along the sliding rails; according to the installing and positioning points of the section steel beam, the section steel beam is slide in place through the winches. By means of the design of the turning supports and the pulleys, the steel wire ropes of the winches can be turned, the transverse and longitudinal space is fully used, and the difficulty that construction cannot be carried out due to the insufficient longitudinal sliding length of a roof is overcome.

The invention discloses an indoor piling wall support structure. The indoor piling wall support structure comprises underground diaphragm walls and cast-in-place piles, wherein the cast-in-place piles are arranged on two sides of each underground diaphragm wall respectively, and the underground diaphragm wall and each corresponding cast-in-place pile are in lap joint meshing through an embedded part embedded at edges of the underground diaphragm wall and the corresponding cast-in-place pile; two ends of each embedded part extend horizontally along the outer surface of the corresponding underground diaphragm wall and folded to form embedded part flanges which are perpendicular to a main body of the embedded part and are parallel to each other; a water stop component is arranged on each embedded part; the underground diaphragm walls, the cast-in-place piles and the water stop components constitute water stop piling walls; a cement mortar layer is arranged on the side, connected with the corresponding underground diaphragm wall, of each cast-in-place pile, and a pipe component pre-equipped with a wire and made of a waterproof insulating material is arranged in the cement mortar layer; a cement mortar layer, prefabricated thermal mortar soft boards and prefabricated waterproof soft boards are arranged sequentially on the outer wall surface of underground space formed between the bottoms of the underground diaphragm walls and the cast-in-place piles; a displacement sensor is arranged between the prefabricated thermal mortar soft boards at a junction of each underground diaphragm wall and each corresponding cast-in-place pile, and a wire of the displacement sensor extends to the wall top from the corresponding pipe component.

The invention belongs to the technical field of waterproof coatings, and in particular, relates to a preparation method of a high-temperature-resistant polyurea elastic flame-retardant waterproof coating. The polyurea elastomer coating prepared by the preparation method disclosed by the invention has the advantages of high solid content, greenness, environmental friendliness, thick, compact and flexible coating film, strong adhesive force with a substrate, excellent ultraviolet resistance, impact resistance and the like, and simplicity and convenience in construction, adopts vinyl ester resinto modify a polyurea coating, and does not contain any hydroxyl component or catalyst. The reaction activity of an amino-terminated compound and an isocyanate component is extremely high, no catalystis needed, the high temperature resistance of the coating is further improved, and the coating has a good application prospect.

The invention discloses an integrated construction process of ecological dredging and synchronous sludge dehydrating. The construction process comprises the following steps of construction preparation, ecological dredging and sludge dehydrating. The river bottom is stirred through a reamer system in a dredger to form sludge slurry, a pumping system in the dredger conveys the sludge slurry to a screening device through a conveying pipeline to conduct sludge dehydrating treatment, and the purpose of dredging is achieved. In the construction process, the construction mode of dredging with water is adopted, so that water changing or water source adding is not needed in the dredging process; by means of the sludge dehydrating treatment through the screening device, the solid content of supernatant liquor is low, so that when the supernatant liquor returns back to a river, secondary pollution is avoided; the water content of dehydrated sludge is about 75%, and the dehydrated sludge can be subjected to landfill directly, so that the secondary pollution of the sludge containing a large quantity of sewage on the environment in the outward transporting process and follow-up treating process is avoided and reduced effectively; and compared with a traditional water-drained dredging method, by dredging with the water, damage to river ecology is reduced while the sludge is treated effectively.

The invention discloses a right-sawtooth-type concrete wall block. According to the invention, a right-sawtooth-type mold is manufactured by using a steel mold; reinforcement steel bars are braided into the right-sawtooth-type shape, and are flatly paved in the mold. Well mixed concrete is then poured into the mold, and is flattened and compacted by using a vibrating machine. Or, concrete and reinforcement steel bars are placed into the right-sawtooth-type mold, and the right-sawtooth-type construction wall block can be manufactured by punching by using a high-pressure punching machine. With the above methods, the concrete wall block with the right-sawtooth-type shape can be manufactured.

The invention provides a steel mold trolley for tunnel side wall concrete lining, thereby realizing quick lining of the full section of the tunnel concrete. Lifting frames are arranged at the two sides of the trolley and are connected to the two sides of the trolley by sliding rails and sliding blocks. Templates and jacks are arranged on the lifting frames. The templates need segmented manufacturing and installation; and the jacks serving as power sources of the lifting frames are used for lifting the lifting frames gradually to realize a sliding membrane effect. The steel mold trolley that isused for quick construction of the tunnel side wall concrete has advantages of simple structure, great convenience in mounting and dismounting, low cost, and high adaptability and is capable of monitoring the construction process at any time and carrying out maintenance and construction quality defect repairing timely.