457results about How to "Reduce processing difficulty" patented technology

The invention provides a time-space relationship analysis system based on multi-source Internet-of-things location sensing. The system includes a sensing layer, a data processing layer, a network layer and an application layer; the sensing layer includes a variety of terminal equipment, and each terminal equipment can collect time-space data and provide original time-space data for the data processing layer; the data processing layer is used for receiving, filtering and cleaning the time-space data from the sensing layer, then exploiting the data according to the time-space association rule, storing the data to a time-space database, and providing an access interface for the network layer. According to the system, standardized heterogeneous data formats and various training models are adopted, multi-source Internet-of-things sensing data is reused in a multilevel model, and an efficient and predictable service is provided for an upper level policing application.

The invention provides a structure of a curved capacitive touch control panel, which comprises a three-dimensional curved flexible circuit board with a capacitive touch control function, a touchable three-dimensional curved glass substrate and an adhesive layer. The three-dimensional curved flexible circuit board is provided with a first curved lateral face and a first curved end face, which are formed by at least two axial arc curved moulds by means of compression molding. The three-dimensional curved glass substrate is provided with a second curved lateral face and a second curved end face, which are mutually coupled and attached into a whole corresponding to arc curved shapes of the three-dimensional curved flexible circuit board. The adhesive layer is arranged between the three-dimensional curved glass substrate and the three-dimensional curved flexible circuit board and used for bonding the three-dimensional curved flexible circuit board onto the three-dimensional curved glass substrate.

The present invention discloses a silicon MEMS piezoresistive acceleration sensor which belongs to the art of micro-mechanical sensors. The present invention comprises a silicon frame, a quality block, a torsion girder, a sensitive girder and a voltage dependent resistor; wherein, the left and the right sides of the quality block are provided with sensitive girders in symmetry which are connected with the silicon frame, and the end part on the upper surface of the sensitive girder is provided with the voltage dependent resistor; the front and the rear sides of the quality block are provided with a pair of symmetrical torsion girders which are connected with the silicon frame, the height of the quality block is vertically higher than that of the sensitive girder. The piezoresistive acceleration sensor provided by the present invention is a micro sensor using the voltage dependent resistor that is arranged on the upper surface of the structure to test the lateral acceleration signal; can avoid the sophisticated technique making the voltage dependent resistor on the profile of the structure; reduces the difficulty of processing; improves the accuracy, consistency and good yield of resistor processing; and easily realizes three-axial integration. The sensor has the advantages of small body, light weight, small crossover coupling, high reliability, low cost and easy combination.

The invention discloses an acoustic emission testing apparatus with acoustic emission sensors built in a true triaxial chamber. T-shaped cavities are processed in rock sample clamps in three directions of a true triaxial electro-hydraulic servo mutagenesis testing system; the acoustic emission sensors are placed in the T-shaped cavities; a rubber plug located at an end part is used for fixing an acoustic emission signal line; the lead-out signal line is connected with a BNC adapter equipped with a terminal; the BNC adapter is directly connected with an amplifier to form a complete acoustic emission monitoring system; and the tail part of each acoustic emission sensor is fixedly connected with a push rod through a magnet piece, the push rod, a spring pad, a hard spring and minisized screws form a force-transferring mechanism together, and the acoustic emission sensor and a rock sample are allowed to always maintain tight contact in virtue of the mechanism. The acoustic emission testing apparatus is simple in structure and strong in operability; the acoustic emission sensors are repeatedly usable; considerable interference signals produced by external arrangement of the acoustic emission sensors are substantially reduced; and authenticity and reliability of acquired acoustic emission signals are guaranteed.

The invention discloses a gas-magnetic mixed suspension type of 6-DOF (degree of freedom) planar motor comprising a stator substrate placed on the horizontal XY plane and a mover substrate floating on the stator substrate and parallel to the stator substrate. The four angles on the upper surface of the stator substrate are respectively provided with a first permanent magnet array, a second permanent magnet array, a third permanent magnet array and a fourth permanent magnet array. The wavelength direction of the first permanent magnet array and the third permanent magnet array thereof is the same with X axis and the wavelength direction of the second permanent magnet array and the fourth permanent magnet array is the same with Y axis. The four angles of the lower surface of the mover substrate are respectively provided with a first thrust winding, a second thrust winding, a third thrust winding and a fourth thrust winding. The wavelength direction of the first thrust winding and the third thrust winding thereof is the same with X axis and the wavelength direction of the second thrust winding and the fourth thrust winding is the same with Y axis. The four angles of the lower surface of the moving substrate are respectively provided with a first aerostatic bearing air cushion, a second aerostatic bearing air cushion, a third aerostatic bearing air cushion and a fourth aerostatic bearing air cushion.

The invention relates to a water-base air purifying device for haze and dust environments. The water-base air purifying device comprises an air suction chamber and a water-base air purifying chamber, wherein a polluted air suction device is mounted in the air suction chamber; an air purifying pond is arranged at the bottom of the water-base air purifying chamber; an ultra-micro bubble generator, a turbidity sensing device and a micro-current electrolyzer are arranged in the air purifying pond; the polluted air suction device is connected with the ultra-micro bubble generator through an air inlet pipe; a water mist generating device and a water mist retaining device are arranged on the upper part of the air purifying pond; the polluted air suction device, the ultra-micro bubble generator, the turbidity sensing device, the micro-current electrolyzer and the water mist generating device are all connected with a control system arranged on one side of the air purifying chamber. The water-base air purifying device for haze and dust environments can be used for effectively purifying particulate matters and poisonous and harmful matters in air and improving the air quality, is fit for haze and dust treatment in various places, such as households, enterprises, schools, bus stations, chemical plants and construction tunnels, and has ultrahigh popularization and application values.

The invention relates to an SOI-based CMOS integrated device with a strain Ge channel and an inverted trapezoidal grid and a preparation method of the integrated device. The preparation method comprises that an SOI substrate is selected; a SiGe layer is formed, and a strain Ge layer and a Si cap layer are grown to form NMOS and PMOS active regions; an isolated channel is formed by an etching technology; the surface of the NMOS active region is photo-etched to form an NMOS grid pattern, and a first double-trapezoid groove is formed by a particle beam etching technology; the surface of the PMOS active region is photo-etched to form a PMOS grid pattern, and a second double-trapezoid groove is formed by a particle beam etching technology; grid medium materials are formed at the surfaces of the NMOS and PMOS active regions respectively; the grid medium material at specific position of the surface of the PMOS active region is etched, and P type ions are injected to form a PMOS source-drain area, the grid medium material at specific position of the surface of the NMOS active region is etched, and N type ions are injected to form an NMOS source-drain area; NMOS and PMOS grids are formed; and metallization is carried out, the drain, source and grid leads are photo-etched to form the SOI-based CMOS integrated device with the strain Ge channel and inverted trapezoidal grid.

The present invention provides a capacitance microphone, which includes a substrate equipped with a cavity, a back board equipped with sound hole and connected with the substrate, the first electrode coupled with the back board, and also includes a diaphragm which is opposite to the back board and located between the back board and the substrate, the second electrode coupled with the diaphragm, wherein air gap is between the diaphragm and the back board, and the diaphragm is equipped with a hole through the diaphragm. The capacitance microphone has the advantages of reduced difficulty of manufacturing technology and low bulk production cost.

The invention discloses an electrostatic spinning multi-strand wire spray head, and belongs to the electrostatic spinning field. The spray head comprises a jointing piece, a guide piece and a heat control device, wherein the jointing piece is connected with the guide piece through screw thread; the heat control device is fixed on the outer surface of the jointing piece; the matched columnar surface of the guide piece is in tight fit joint with the corresponding surface of the jointing piece; a plurality of shunting holes are uniformly distributed at the lower end vertical to the columnar surface of the guide piece; a buffer groove is formed at the outlet of the shunting holes; a plurality of shunting grooves are annularly and uniformly distributed on the shunting conical surface of the lower end of the guide piece, and the shunting conical surface is parallel to the corresponding conical surface on the jointing piece; and the lower end of the guide piece is provided with an inner hexagonal hole and a shallow concave surface. The spray head used for electro-spinning of melt or solution can realize uniform preparation of multi-strand wires, and the combination of multiple spray heads with the structures can be introduced into a large-batch electrostatic spinning device; and the spray head greatly improves the production efficiency of electrostatic spinning, and reduces the processing cost of multiple spray heads.

The invention discloses an embedded-type circuit board, which comprises a copper-clad ceramic substrate, a groove body and an electronic part, wherein the copper-clad ceramic substrate comprises a ceramic insulation layer and a first metal layer which is arranged on the first surface of the ceramic insulation layer; the groove body is arranged on the first metal layer; and the electronic part is fixed inside the groove body. The invention also provides a production method of the embedded-type circuit board. In the invention, the groove body is arranged on the metal layer of the copper-clad ceramic substrate rather than being arranged on the ceramic insulation layer, so that the electronic part can be embedded in the groove body, so the processing difficulty is reduced, and the high heat radiation performance of the copper-clad ceramic substrate can be utilized.

The invention relates to a lathe attachment, in particular relates to a hydraulic clamp and belongs to the technical field of machining. According to a hydraulic clamp for the inner hole of the high-precision thin-wall pipe fitting provided by the invention, the traditional integral-type structure is replaced by a split-type structure. The hydraulic clamp is characterized by being composed of a hydraulic flange disc (A) which is connected with a lathe and a tensioning shaft (B), wherein the hydraulic flange disc (A) is connected with the tensioning shaft (B) in a sealing manner. In the hydraulic clamp for the inner hole of the high-precision thin-wall pipe fitting, the traditional integral-type structure is replaced by the structure composed of two parts, the processing difficulty is reduced and the performance of a processing technique is improved; the tensioning shaft can be exchanged according to different specification requirements, the whole hydraulic clamp is not necessary to replace and the processing cost is greatly reduced; and above all, the hydraulic clamp provided by the invention can be manufactured voluntarily in China and is not necessary to completely rely on imports, so that the hydraulic clamp provided by the invention lays a technical foundation to propel the development of a high-precision thin-wall pipe sleeve in China and improve the quality of the high-precision thin-wall sleeve.

The invention discloses a dual clutch transmission and a vehicle with the dual clutch transmission. The dual clutch transmission comprises a first clutch, a second clutch, an oil pan, a gear set, a first oil pump, a second oil pump, a first control valve and a second control valve, wherein the first oil pump is provided with an inlet and an outlet; the inlet of the first oil pump is connected with the oil pan; the outlet of the first oil pump is respectively connected with a lubricating oil channel of the first clutch, a lubricating oil channel of the second clutch, and a lubricating oil channel of the gear set; the second oil pump is provided with an inlet and an outlet; the inlet of the second oil pump is connected with the oil pan; the first control valve is connected between the first clutch and the outlet of the second oil pump so as to control switching on and switching off of the first clutch; and the second control valve is connected between the second clutch and the outlet of the second oil pump so as to control switching on and switching off of the second clutch. The dual clutch transmission provided by the embodiment of the invention is good in lubricating effect, simple in structure and low in manufacturing cost.

The invention aims to provide a multifunctional light-weight and high-strength engine timing cover, which is provided with an oil sealing hole. The engine timing cover has the key points that the outer lateral surface of the timing cover is provided with a suspension bracket which is connected with a vehicle body in a suspension mode; and the top of the timing cover is provided with an engine oil filling port and an engine oil staff gauge passage entrance which is communicated with the engine oil staff gauge passage. After the timing cover is assembled, the sealing of a timing chain room with the outside can be achieved so as to prevent the engine oil from leakage. People can fill the engine oil and examine the consumption of the engine oil at the timing cover, so the timing cover is convenient to operate. The timing cover adopts the suspension bracket to connect with the car body in the suspension mode, and forms support to an engine so as to contribute to assembling the engine. The timing cover can achieve multiple functions in a compact space at the same time of guaranteeing the strength and reducing the weight, and conform to the development trend of modern automobiles.

The invention relates to a series connection type waste gas recycling cooler for a medium and heavy duty vehicle, which comprises a gas inlet pipe box, a gas exhaust pipe box, at least two heat exchange pipe assemblies, a water inlet pipe and a water outlet pipe, wherein the gas inlet pipe box is connected with a gas exhaust pipe of an engine; the gas exhaust pipe box is connected with a gas exhaust pipe of a waste gas recycling system of the engine; the heat exchange pipe assemblies are respectively connected with the gas inlet pipe box and the gas exhaust pipe box by ridge rings; the water inlet pipe is arranged on the heat exchange pipe assembly connected with the gas inlet pipe box; the water outlet pipe is arranged on the heat exchange pipe assembly connected with the gas exhaust pipebox; and the heat exchange pipe assemblies are connected by heat exchange pipe box connecting elements for connecting gas paths and connected with a water path by water path connecting elements. Theinvention can shorten the lengths of a single pipe shell and a pipe bundle by adopting the heat exchange pipe assemblies, and effectively solve the problem of thermal expansion of the pipe shell and the pipe bundle. The design has simple assembly process, reduces the machining difficulty, improves the machining precision, ensures the reliability of the cooler and standardizes and modularizes the design of a heat exchange pipe and the pipe shell, thereby improving the period of development and reducing the processing difficulty.

The invention relates to a manufacturing method for a cold drawn welded pipe used for hydraulic oil cylinders. The manufacturing method includes the steps of: longitudinal shearing, roll bending formation, high-frequency welding, weld joint treatment, sizing, online eddy current flow detection, stress relief annealing, pre-straightening treatment, pipe cutting, normalizing air cooling treatment, pinching, pickling treatment, phosphating treatment, saponification treatment, cold-drawing, induction furnace quenching treatment, box type furnace tempering treatment, straightening treatment, fine boring rolling, magnetic leakage flaw detection, and pipe cutting measurement. The product obtained by the method provided by the invention has the advantages of high yield strength, high tensile strength, precise size, smooth surface, fast machine shaping speed, high yield, and remarkably improved manufacturing precision. The cold drawn welded pipe has good surface smoothness and low roughness, the follow-up gold processing amount is reduced, the steel utilization is improved, the manufacturing cost is lowered, and energy saving and environmental protection are promoted.

The invention discloses a ferris wheel, comprising a ferris wheel bracket, a hollow round turntable, and a plurality of cabins and a plurality of turntable-connected traction steel cables which are circularly distributed outside the turntable, wherein column heads at two ends above the bracket are equipped with slewing bearings which are connectively integrated with a cross beam in the middle to serve as the center of the turntable, an outer ring of the slewing bearing is equipped with a steel cable disk, and two ends of all the traction steel cables are respectively connected with the steel cable disk and the turntable. Since the slewing bearing structure is adopted and inner rings of the slewing bearings are connected with the column heads and the cross beam, a flange face where the column heads are connected with the cross beam is only required to be processed so as to greatly diminish processing difficulty, and both the slewing bearings at two ends are fixedly connected, so the need of the structure of the current ferris wheel, in which the bearing at one end is fixedly installed while the bearing at the other end is flexibly installed, is not required, thereby simplifying the installation of the slewing bearings and remarkably reducing the technological requirement and the processing difficulty of entire equipment; thus the ferris wheel has reasonable structure, simple and convenient installation and low production cost.

The invention relates to a low-manganese aluminum alloy for a cathode foil and a preparation method thereof. The low-manganese aluminum alloy is characterized by comprising the following chemical components in percentage by weight: 0.30-0.60% of Mn, 0.20-0.40% of Fe, 0.10-0.20% of Cu, Si not higher than 0.15%, Mg not higher than 0.08%, Zn not higher than 0.05%, Ti not higher than 0.15%, other impurity elements with single content not higher than 0.05%, other impurity elements with total content not higher than 0.15%, and the balance of Al. According to the low-manganese aluminum alloy of the present invention, the content of alloy elements is reduced, so that the alloy strength is reduced, the rolling force during rolling is reduced, the processing difficulty is reduced, and the energy is saved; and the cathode foil produced by the low-manganese aluminum alloy has the advantages of good surface quality, no dust, uniform structure and high specific capacitance.

The invention discloses an atomizing disk used for a high-speed centrifugal atomizer. In the atomizing disk, a nozzle disk is positioned on the lower surface of a disk-shaped upper cover and the top surface of a disk-shaped base, and the three parts are fixed through screw bolts. An atomized liquid storage space is formed between the inner walls of the disk-shaped upper cover, the disk-shaped base and the nozzle disk. Cylindrical columns are distributed uniformly and circumferentially in the radial direction on the nozzle disk. A nozzle and a stopper are disposed from the inside to the outside inside each cylindrical column. The atomizing disk has the advantages of simple structure, easy fabrication, and convenient assembly/disassembly of atomizing nozzles. The atomizing disk increases the atomizing distance, reduces the requirement for rotation speed of the atomizing disk, improves the working conditions of the bearing of the driving shaft of the atomizing disk, and reduces the requirements for installation and lubrication of the bearing. The rotation speed of the atomizing disk is lower than 10000 r/min, so that the vibration of the atomizing disk and the motor main shaft is reduced and the service life of the motor is prolonged. Additionally, speed-increasing mechanism is dispensable, thereby reducing the use cost of the atomizer.

The invention discloses an extrusion die for the preparation of flat pipes of micro-channel heat exchangers. The extrusion die comprises a divergent die, a cavity die, a core rod, a main die sleeve and a die bush, wherein the divergent die is provided with a divergent bridge, the two sides of the divergent bridge are provided with two divergent holes, and a pressure-bearing surface of the divergent die is a semispherical surface or an involute curved surface; the cavity die is provided with a welding chamber and a cavity; the core rod is removably provided with a die core, and the core rod is provided with a step and connected with the divergent die; the main die sleeve and the die bush are respectively matched with the divergent die and the cavity die; after the divergent die, the cavity die and the core rod are assembled, the obtained assembled object is integrally embedded in the main die sleeve, and finally, the main die sleeve is connected with the die bush. According to the invention, the integral stress condition of the die can be improved, and the extrusion force is reduced; and the divergent die and the cavity die can be used repeatedly and can be matched with different die cores, therefore, the production efficiency can be greatly improved, and the manufacturing and maintenance costs of the die can be reduced.

This invention discloses a method for treatment and recovering of waste-water from bonderizing process. The method comprises procedures of: (1), waste-water from oil-removing washing of bonderizing process of from bonderizing process washing step is fed into neutralization tank (IV), adding alkali or acid to regulate its pH value of 7-9; then (2), it is fed into reaction tank (V), adding flocculating agent, and agitating, controlling the oil<=1.0mg; total phosphorous<=1.0mg, Zinc<=3.2mg; (3), it is then fed into settling tank (VI), controlling its suspension solid<=0.7mg; (4), after settling, the water is fed into clarification tank (VII), and stored for cyclic utilization. The advantages of this invention are: low cost, reducing water consumption and reducing water pollution.

The invention discloses a novel connecting structure for a composite-material spray pipe extending section and a short spray pipe thrust chamber of a rocket engine. The novel connecting structure comprises the composite-material spray pipe extending section and the short spray pipe thrust chamber, wherein a first flange is arranged on the composite-material spray pipe extending section; the first flange is integrally formed with the composite-material spray pipe extending section, and is a tapered curved surface which is outwards expanded; a plurality of unthreaded holes are uniformly distributed in the first flange; the number of the unthreaded holes is greater than 4; the spray pipe outlet of the short spray pipe thrust chamber is provided with a second flange which is a tapered curved surface having a bending angle matched with that of the first flange; threaded holes which are as many as the unthreaded holes in the first flange are uniformly distributed in the second flange; sealing groove structures are distributed inside the threaded holes; and the composite-material spray pipe extending section and the short spray pipe thrust chamber are connected through the first flange and the second flange, are sealed by a flexible graphite sealing ring, and are reinforced through bolts. The novel connecting structure realizes fastening connection between the spray pipe extending section and the short spray pipe thrust chamber, and realizes reliable sealing of high-temperature fuel gas in a spray pipe.

The invention provides a magnetic path horizontal rotary type hoisting permanent magnet. The magnetic path horizontal rotary type hoisting permanent magnet is mainly composed of three parts, namely a mechanical rotation part, a magnetic system body and a control device, and is characterized in that a lifting ring of the mechanical rotation part is arranged on a lifting rod with a hook; when the lifting rod with the hook slides in a lifting rod slide rail, left and right lifting bars and large bevel gears are driven to rotate, then small bevel gears are driven to horizontally rotate, and finally, a plurality of rotary magnetic shafts in the magnetic system body are driven to rotate by a roller chain so as to change a magnetic path; and each lifting or descending of the lifting rod with the hook is used for controlling the unhooking or the hooking of the hook, so that the rotary angles of the magnetic shafts in the magnetic system body are controlled to control the circulation of two states, namely iron suction and iron releasing, of the hoisting permanent magnet; and a ratchet wheel is not used so that the problems of an old type hoisting permanent magnet that the iron suction is not synchronous, the machining is difficult and the like are completely overcome.

The invention discloses an auxiliary supporting fixture for circular tube cutting. The auxiliary supporting fixture for circular tube cutting is mainly applicable to circular tube cutting, within a certain diameter range, of a laser cutting machine tool which is used for circular tube cutting. The auxiliary supporting fixture for circular tube cutting is characterized in that a circular tube is supported by trapezoid supporting plates which are provided with balls and universal balls; four trapezoid groove wheels with braking rubber are mounted at the lower end of the auxiliary supporting fixture to roll on hexagonal steel guiding rails in a matching way, so that the horizontal movement of the auxiliary supporting fixture can be realized; a lifting device consists of cone gears, a thrust ball bearing, a ball nut, a threaded shaft and a lifting frame to realize the movement of the supporting plates in the vertical direction.

The garbage treating and utilizing process for small town consists of the steps of manual sorting, incinerating, marsh gas production, etc. The sorting step separates out recyclables, building refuse and cinder to be land filled, and organic refuse to be crushed and anaerobically fermented in marsh gas pond, and rest part to be incinerated in the incinerating furnace. The fermentation step produces marsh gas for burning in the incinerating furnace and providing fuel gas outside and marsh gas residue to be dewatered to produce organic fertilizer. The incinerating furnace produces high temperature fume with heat further utilized, and cinder and fly ash to be land filled.

The invention discloses a manufacture method of a multi-baffle large-aperture box frame. The method comprises the steps of firstly, reliably connecting positioning bases and limiting blocks, ensuring that side surfaces of the positioning bases and the limiting blocks are adhered, loading the positioning bases and the limiting blocks into baffle inner holes integrally, then welding the limiting blocks with baffle bearing seats in a spot welding way, secondly, establishing lines on a combined platform to determine positions of all baffles, ensuring that a core shaft penetrates through all the positioning bases, fixing the positions of the positioning bases separately through positioning pins, connecting the positioning bases with the core shaft, thirdly, welding all process supports with inner holes of all the baffles in a spot welding way in weight reduction notch space positions arranged on the positioning bases, fourthly, cutting welding lines of the limiting blocks and the bearing seats, laying the limiting blocks in directions perpendicular to disc diameters of the positioning bases, gradually withdrawing the positioning bases and the core shaft, welding a frame body, welding connecting plates among all the baffles, and fifthly, performing thermal aging on the frame body integrally, and then removing all the process supports. The method improves the frame body combination accuracy and the operating efficiency.

The embodiment of the invention discloses a microfluid detecting device which comprises a first base plate, a second base plate and a microfluid channel layer. The first base plate is configured to comprise a first surface and a second surface which are opposite, a light source is arranged on the first surface, and at least one grating block is arranged on the second surface. The second base plateis configured to comprise a third surface and a fourth surface which are opposite, and at least one light-sensitive detector is configured on the third surface, facing the first surface, of the second base plate. The microfluid channel layer is arranged between the first surface of the first base plate and the third surface of the second base plate and comprises a microfluid channel for allowinga microfluid to circulate. The at least one grating block reflects light emitted out from the light source, and collimated light rays of corresponding colors reflected by all the grating blocks are transmitted through the microfluid channel and then received by the at least one light-sensitive detector. A microfluid detecting system is simple in structure, small in machining difficulty, low in cost, high in spectrum light splitting precision, high in detection and identification precision and low in interference.

The invention provides an integratable coupling microcavity optical filter which comprises a microcavity and a waveguide. The microcavity comprises an inner ring and an outer ring, and the outer ring is in a helical shape. The integratable coupling microcavity optical filter adopts the helical microcavity, and the notch is directly connected with input and output waveguide, thereby improving the coupling efficiency. The helical microcavity is directly connected with the waveguide, has the directional input and output property, and also has the advantages of high Q value and narrow linewidth. The structure is compact, is easy to integrate, does not need to couple input/output by waveguide, reduces the processing degree of devices, decreases the preparing cost of the devices, and is especially suitable for preparing multi-functional filters with high-property integrated optical chips.

The invention relates to the technical field of tunnel collapse, in particular to a collapse treatment method of a tunnel in a water-rich faulted zone. The collapse treatment method of the tunnel in the water-rich faulted zone comprises the following steps that a slurry wall is poured at the position tightly attached to collapse soil body zone, and a drainage pipe is arranged on the slurry wall; afirst storing hole is drilled, and a first grouting pipe is placed; grouting is conducted on a loosen soil zone through the first grouting pipe; excavation construction is conducted, and arch crown supporting is conducted; a second storing hole is drilled, and a second grouting pipe is placed; and grouting is conducted in a collapsed cavity, and grouting is completed. By means of the collapse treatment method of the tunnel in the water-rich faulted zone, collapse is prevented from developing to the excavated tunnel in a collapse soil body zone, so that the pushing force of water burst in thecollapse soil body zone on a slurry stopping wall is reduced, geological materials are continues to be transported towards the collapse soil body zone at the upper portion of the loosen soil zone andthe collapse cavity, comprehensive management of the collapse is achieved, corresponding treatment methods for different geological objects are achieved, the probability of secondary collapsing is greatly reduced, the construction losses are reduced, and the construction safety is ensured.

The invention relates to a machining method for a perforated U-shaped rib in manufacturing of a steel structure, in particular to a method for profiling a U-shaped rib after drilling before steel plate profiling, belonging to the technical field of plate forming. The machining method is implemented by the following steps: A, pretreating, flattening and feeding a steel plate; B, milling an edge in the length direction after stacking electric welding fixation; C, drilling a plurality of plates simultaneously and then milling an edge in the width direction; D, milling a plate groove; E, profiling the U-shaped rib. The machining method has the technological progress effects that (1) the machining difficulty for drilling after U-shaped rib forming can be reduced by drilling a hole group before profiling, (2) the hole group is simultaneously machined in a plurality of layers of plates through a drilling template to improve the hole forming efficiency, and (3) the internal stress of the steel plate is eliminated, the deformation before plate profiling is reduced and the positional accuracy of the hole group is guaranteed.

The invention provides a terahertz receiving front end and an implementation method of the terahertz receiving front end. The receiving front end comprises an ortho-mode transducer (OMT), two waveguide-microstrip converters, two low noise amplifiers (LNA), two bandpass filters, two frequency mixers, a local oscillator (LO) and a power divider, wherein the OMT, the waveguide-microstrip converters and the LNAs form a combined body which is integrally formed, the frequency mixers and the power divider form a combined body which is integrally formed, and the LO and a frequency doubler form a combiner body which is integrally formed. Due to the integrated design layout scheme, it is avoided that many of parts in the receiving front end are connected to one another, and the integration level of the product is greatly improved. Transmission energy loss is reduced, and powerful technical support is provided for the terahertz frequency band receiving front end. The invention further provides the implementation method of the receiving front end.