30results about How to "Meet the needs of rapid construction" patented technology

The invention discloses a water-rich weak surrounding rock long-and-big tunnel construction method. The method includes that a tunnel inclined shaft is arranged on one side of a main tunnel of a tunnel to be constructed, the main tunnel is divided into a tunnel entry section, a tunnel exit section and a middle connecting section connected between the tunnel entry section and the tunnel exit section, the middle connecting section is divided into an inclined shaft assisting construction entry section and an inclined shaft assisting construction exit section, and each of the tunnel entry section, the tunnel exit section, the inclined shaft assisting construction entry section and the inclined shaft assisting construction exit section is divided into multiple sections for construction. A construction method of each section includes: step 1, performing geological forecasting in advance, and when a debris flow formation exists ahead, entering a step 2, or else, entering a step 3; step 2, performing stability control construction; step 3, determining a primary supporting scheme; step 4, excavating the tunnel, and performing primary supporting construction; step 5, performing secondary lining construction on the tunnel. The water-rich weak surrounding rock long-big tunnel construction method is simple in step, reasonable in design, simple and convenient to construct, good in using effect, capable of meeting construction requirements of water-rich weak surrounding rock long-and-big tunnels, short in construction period and safe in construction process.

The invention discloses a flame-retardant and high-temperature resistant polypropylene silent drain pipe. The drain pipe comprises an inner layer, an outer layer and an intermediate layer according toa thickness ratio of (0.5-1.5):(4.5-6.5):(0.5-1.5). The inner layer and the outer layer comprise the following components: 80%-89% of a copolymerized polypropylene, 1%-3% of a masterbatch, 0.5%-1.5%of an antioxidant, 1.5%-3.5% of an ultraviolet absorber, 6%-9% of a bromine compound, 1%-4% of an antimony trioxide, 0.1%-0.2% of a stearate, and 0.5 -%-1.5% of PP compatibilizer; the intermediate layer comprises the following components: 35%-50% of a copolymerized polypropylene, 10%-20% of glass fibers, 30%-35% of a filler, 1%-2% of a masterbatch, 0. 5%-1.5% of an antioxidant, 6%-9% of a brominecompound, 1%-4% of an antimony trioxide, 0.1%-0.2% of a stearate, and 1%-2% of a PP compatibilizer. The drain pipe can be used in the installation of water supply and sewage pipes. The drain pipe hasthe advantages of low cost, flame retardance, high temperature resistance, chemical corrosion resistance, impact resistance, long service life, good mute effect and environmental protection.

The invention provides a construction plugging composite material, which is composed of active magnesium oxide, rubber particles, water-based acrylate emulsion, water-based curing agent, magnesium bicarbonate and magnesium chloride. It has the advantages of low shrinkage rate of the consolidated material body, good water resistance, strong resistance to crack deformation, and high fault tolerance of the formula.

The present invention provides a total solid beam contraction type steel corrosion monitoring sensor and a preparation method thereof. The total solid beam contraction type steel corrosion monitoring sensor comprises three graphite beam contraction rings, three total solid reference electrode, two sensor fixing racks, three sets of beam contraction protecting casing and three sets of PVC tubes used for packing the total solid reference electrodes and leading out the conducting wire. The invention uses finite elements for analyzing the arrangement characteristic of potential wire in solid dielectric of concrete, and at the same time adopts a long-lifetime and total solid reference electrodes which are developed independently for realizing the control to the area of working electrode in thecorrosion monitoring process with the electrochemistry method. Finally the total solid beam contraction type corrosion sensor which has reasonable structure and is suitable for the application of actual project is designed out. A designing concept of ''plug and play'' is adopted in the designing process of sensor. The fast construction requirement can be satisfied, and the laying process of the sensor is greatly simplified.

The invention discloses a super-large-diameter overall movable metal formwork for a shaft, which includes a standard formwork, a lifting drive device, a deformation-preventing pre-embedded pressing mechanism and a demoulding mechanism. The anti-deformation pre-embedded pressing mechanism is installed on the standard formwork and the anti-deformation pre-embedded pressing mechanism is used to press the suspension ear plate of the formwork, and the demoulding mechanism is installed between two adjacent standard formworks. And the two adjacent standard formworks are demoulded or supported to open the mold under the action of the demoulding mechanism. This application can realize the synchronous lifting and lowering of the formwork by the lifting drive device or multiple ground stabilizer (winch) steel wire rope lifting points, and enhance the overall rigidity of the formwork and the ability to resist local deformation through the anti-deformation pressing device. It becomes smaller or larger within the elastic range, and can quickly complete the demoulding, lowering (or raising), vertical formwork pouring and other processes, saving the time for masonry well walls.

The invention discloses a steel fiber modified PVA fiber reinforced cement-based composite material and a preparation method thereof.The steel fiber modified PVA fiber reinforced cement-based composite material comprises the following components in parts by weight:450-650 parts of sulphoaluminate cement,190-300 parts of water,440-670 parts of sand,500-830 parts of crushed stone,85-150 parts of ground slag,40-65 parts of fly ash,3-6 parts of a PVA fiber,70-110 parts of a steel fiber,2-5 parts of a high-efficiency water reducing agent and 0-2 parts of an early strength agent.Compared with thesingle early strength agent, anorganic-inorganic composite early strength agent has good economic benefit, the early strength enhancement rate may achieve or exceed the superposition of the strength enhancement rates when the components are used alone, and more obvious economic and technical effects are obtained.The steel fiber is provided with an end hook, so that the bonding strength is high, the main pulling force can be borne after cracks are generated, and a large amount of energy can be absorbed.The mixed use of the two fibers can play a role in different layers, generate synergistic effect, jointly prevent crack propagation and enhance the toughness of concrete.

The invention discloses a mute water discharging pipe, belonging to the field of pipe materials. The mute water discharging pipe not only has a good noise reducing effect, but also has good mechanical performance, and has a three-layer structure, wherein the inner layer and the outer layer are polypropylene felts, and the middle layer is a sound-absorbing core layer; and the sound-absorbing core layer comprises the raw materials in parts by weight: 100-200 parts of polypropylene resin and 20-100 parts of noise-absorbing material, wherein the polypropylene resin is made of block copolymerized polypropylene, homopolymerized polypropylene or random copolymerized polypropylene; and the noise-absorbing material is selected from at least one of wollastonite, calcium carbonate, talcum powder, barium sulfate and silicon dioxide. The mute water discharging pipe disclosed by the invention has the advantages of excellent muting effect, superstrong chemical corrosion resistance, excellent high temperature resistance, good impact resistance, long service life and the like.

The invention relates to a railway construction machine guard rail hoisting device and a rail replacing locomotive guard rail hoisting device, comprising a guard rail hoisting apparatus and an anti-loosing device, wherein the guard rail hoisting apparatus is arranged below a railway construction machine, such as a rail replacing operation vehicle traveling mechanism vehicle body and can integrally lift and transversely move a railway construction machine vehicle body, and the anti-loosing device is arranged on each steering frame of a steel rail traveling machine to enable the steering framesand the vehicle body to be vertically fixed into a whole. The guard rail hoisting apparatus comprises an elongated supporting body, a guard rail suspension bracket and a control device, wherein the supporting body is fixedly suspended below the vehicle body through the guard rail suspension bracket, the control device is used for controlling the movement of the supporting body, a guard rail assembly is respectively arranged at both ends below the supporting body, the control device comprises two telescopic guard rail vertical oil cylinders and telescopic guard rail integral swinging oil cylinders, and the guard rail suspension bracket is provided with two downward stretching struts which are respectively hinged with both ends of the supporting body through two guard rail support rods. Theinvention enables a railway which needs to be born but is not completely fixed to be kept in an upright state in the construction process, farthest prevents the occurrence of a turning-way accident, and also enables the turning-way railway construction machine to rapidly hoist and safely reset.

The invention discloses a high heat insulation board, which comprises a first base plate and a second base plate, a first connecting plate is connected to one side and two ends of the first base plate, and a second connecting plate is connected to one side of the first connecting plate. A slide plate, first slots are opened at both ends of one side of the second substrate, and a first slide slot is opened at one side of the first slot. In the present invention, the first substrate and the second substrate can be preliminarily connected by inserting the second connecting plate and the second sliding plate at the two ends of one side of the protrusion into the second locking groove on the inner wall corresponding to the first groove and the second groove. For the splicing, the first connecting plate and the first slide plate on the side of the first substrate are inserted into the first slot on the side of the second substrate, and the first substrate and the side of the second substrate are closely bonded. The base plate and the second base plate are spliced ​​and installed in the second step to complete the splicing of the first base plate and the second base plate, thereby facilitating splicing installation and disassembly, high splicing efficiency, and meeting the needs of rapid construction.

The invention provides a shield machine, which includes a first heavy truck, a second heavy truck, a third heavy truck, a fourth heavy truck and a fifth heavy truck, the first heavy truck is provided with a reaction force frame and a main engine system, the reaction frame is connected with the host system and can drive the host system to move; the second heavy truck is equipped with a control system; the third heavy truck is equipped with a hydraulic system; the fourth heavy truck is equipped with an injection system; the fifth heavy truck is equipped with an injection system; The heavy truck is provided with a power supply system; wherein, the power supply system can be electrically connected with the control system, the control system can be electrically connected with the hydraulic system and the injection system, and the control system can control the actions of the hydraulic system and the injection system. The shield machine of the present invention occupies a small space, is convenient for production, manufacturing and assembly, does not need to configure a production workshop with complex functions, can start excavation at any time, enhances the flexibility of the shield machine, and effectively reduces processing and manufacturing costs and assembly and debugging time.

An assembled cold-bending square steel pipe column base capable of recovering after an earthquake comprises a connecting piece, an upper end plate, a lower end plate, a long rod bolt, a bottom plate,a square steel pipe short column and a square steel pipe column. The bottom plate is connected with the square steel pipe short column through the connecting piece, the bottom plate is fixed to the connecting piece through a bolt, each side face of the square steel pipe short column is provided with a vertical long circular bolt hole, the square steel pipe short column is fixed to the connecting piece through a friction type bolt, the upper end of the square steel pipe short column is connected with the lower end plate, the lower end plate is connected with the connecting piece through the long rod bolt, the periphery of the long rod bolt is sleeved with the square steel pipe short column, the square steel pipe column is connected with the upper end plate, and the upper end plate and the lower end plate are connected through a bolt. The assembled cold-bending square steel pipe column base is convenient to install, has quick recoverability, and is low in post-earthquake repair workloadand high in comprehensive economic benefit.

The invention relates to a fast track changing vehicle for a seamless line and a fast track changing operation method. The front and rear ends of the running mechanism of the fast railway changing track working vehicle are provided with guard rail recovery devices, and the vehicle between the two bogies of the running mechanism There are pillow pressing devices, rail retracting devices for clamping and moving new rails and old rails at intervals under the body, rail positioning devices, and operating positions set according to needs. The pillow pressing devices and rail positioning devices are respectively close to the two ends Bogie settings. It can also be combined with auxiliary operation vehicles such as fastener recovery vehicles. Using the above-mentioned railway rapid rail change operation vehicles for construction, it is divided into two parts: the old rail retraction operation and the new rail retraction operation, and the two operations are carried out at the same time. It can achieve a rail changing speed of more than 2km / h, can meet the needs of fast track changing on seamless lines, complete track changing within 50 meters, and adapt to the construction needs of road sections with small curve radius. It has the advantages of safety and high degree of automation. advantage.

The invention relates to a rolling contact type electrical method real-time advanced detection carrying device for a TBM and a method thereof. The rolling contact type electrical method real-time advanced detection carrying device comprises rolling hydraulic electrodes, rolling wiring equipment, a combined pipeline and fixed electrodes. Rolling measurement electrodes and rolling power supply electrodes are mounted on a cutter head. The rolling power supply electrodes are mounted on a shield. A fixed power supply electrode B and a fixed measurement electrode N are mounted on a back matched trailer of the TBM. The rolling hydraulic electrodes and the rolling wiring equipment are in electrical signal and oil liquid pipeline connection between the cutter head and the TBM body. The device and the method are advantageous in that the rolling electrodes according to the invention can ensure contact coupling between electrodes and a tunnel face in TBM tunneling or cutter head repairing, thereby realizing carrying integration of the detecting system and the TBM, and realizing electrical method real-time advanced detection in rotation of a TBM construction cutter head.