440results about How to "Short cycle time" patented technology

The invention discloses a medium-length hole mining method in multiple blasting free faces of high dipping thin veins. The medium-length hole mining method is characterized by comprising the steps of: arranging ore blocks along the trend of a core body, dividing the ore body into a medium section and a segment in the altitude; drilling a gate way in the segment and arranging in veins along the ore body; arranging a flat ore removal structure on the bottom along the veins; arranging a cutting raise from one ends of the ore blocks, arranging a manway at the other ends of the ore blocks; and upwards and downwards punching forwards leaning medium-length holes, with the cutting raise as free faces, and blasting caved ores in the segment by multiple free faces, and withdrawing the ore centrally at the bottom. The medium-length hole mining method has the remarkable characteristics of high mining safety, little resource dilution rate, good production continuity, high level of mechanization, low cost, high efficiency, low labor intensity and the like.

The invention relates to a bamboo bridge, which comprises a support element, a bamboo main beam, a bamboo baffle beam and a bridge panel, wherein the bamboo main beam is mounted on the support; the bamboo baffle beam is mounted between two opposite bamboo main beams; the bridge panel is laid above the bamboo baffle beam. The invention has simple structure and low cost.

The invention belongs to the field of sewage treatment and provides a short distance denitrifying dephosphatation double-sludge technique taking granular sludge as medium and a device thereof. The device sequentially comprises a raw water pipe, a water inlet tank and a water inlet valve, and is characterized by further sequentially comprising an anaerobic/anoxic SBR reactor and an intermediate water tank which are connected with each other by a pipeline as well as a short distance nitration SBR reactor and a back flow water tank that are also connected with each other by the pipeline; wherein the intermediate water tank is connected with the short distance nitration SBR reactor, and the back flow water tank is connected with the anaerobic/anoxic SBR reactor; the anaerobic/anoxic SBR reactor and the short distance nitration SBR reactor are internally provided with stirring devices, and a drain pipe is arranged on the anaerobic/anoxic SBR reactor; the short distance nitration SBR reactor is internally provided with an aerating apparatus; the granular sludge which is processed by acclimatization and has the function of denitrifying dephosphatation is put into the anaerobic/anoxic SBR reactor, and the granular sludge which is processed by acclimatization and has the function of short distance nitration is put into the short distance nitration SBR reactor. The invention solves the problems of unstable effect of nitrogen and phosphorus removal of sewage, high content of effluent suspended matter and lower pass rate, so as to be used for low C/N waste water treatment.

The invention discloses a polyamide composite material which comprises, by weight, 20.0% to 40.0% of polyamide 6 with a low viscosity, 10.0% to 30.0% of polyamide 6 with a medium viscosity, 5.0% to 20.0% of a polar low temperature impact modifier, 1.0% to 8.0% of a wear-resisting agent, 0.2% to 5.0% of a heat stabilizer, 0.5% to 5.0% of a lubricant and 20.0% to 45.0% of a reinforcing component. The material has excellent performance and is especially applicable to preparation of cable rollers. The invention also discloses a preparation method for the polyamide composite material. According tothe method, polyamide 6 with a low viscosity, polyamide 6 with a medium viscosity, the low temperature impact modifier, the wear-resisting agent, the heat stabilizer and the lubricant are stirred anduniformly mixed; an obtained mixture is added into a double-screw extruder, and the reinforcing component is added into the double-screw extruder to prepare the polyamide composite material. The method has the advantages of simple operation and suitability to industrial production.

Pt-catalyzed, addition-crosslinking silicone compositions which are self-adhesive at room temperature, develop adhesion rapidly on unpretreated substrates, and contain a functional alkoxy α-silane as an adhesion promoter.

The invention discloses an inner-support-free double-wall locking mouth steel bushing box cofferdam construction method and an inner-support-free double-wall locking mouth steel bushing box cofferdam. Firstly, unit blocks are processed in a factory and then transported to a construction region to be spliced and formed piece by piece, the spliced unit blocks are wholly hoisted to a target pier position at the preset elevation through a large hoisting ship, then construction steps of sludge suction, tenon type locking mouth plugging, sand cushion layer filling, concrete bottom sealing, water suction, foundation clearing, steel protection barrel cutting, pile head removing, whole abutment installation and the like are performed, finally whole dismantling is performed for usage of the next pier position construction. The inner-support-free double-wall locking mouth steel bushing box cofferdam comprises a side plate, a blade foot and a joint and is characterized in that the cofferdam is of a detachable structure, a plane is partitioned into blocks, the blocks are connected in a mode that tenon type locking mouths are combined with bolts, and the inner side is not provided with an inner support. Therefore, the inner-support-free double-wall locking mouth steel bushing box cofferdam has the advantages of being small in construction difficulty, short in construction period, low in cost input, small in material consumption, high in repeated usage times, capable of being wholly recycled, safe, reliable and the like.

To provide a method of manufacturing a semiconductor device, which prevents impurities from entering an SOI substrate. A source gas including one or plural kinds selected from a hydrogen gas, a helium gas, or halogen gas are excited to generate ions, and the ions are added to a bonding substrate to thereby form a fragile layer in the bonding substrate. Then, a region of the bonding substrate that is on and near the surface thereof, i.e., a region ranging from a shallower position than the fragile layer to the surface is removed by etching, polishing, or the like. Next, after attaching the bonding substrate to a base substrate, the bonding substrate is separated at the fragile layer to thereby form a semiconductor film over the base substrate. After forming the semiconductor film over the base substrate, a semiconductor element is formed using the semiconductor film.

The present invention provides a method for evaluating overbreak and underbreak of a tunnel. The method comprises the following steps that the tunnel is scanned, point cloud data of the tunnel is obtained, and the point cloud data is preprocessed so as to obtain preprocessed data; basic data in the preprocessed data is extracted and compared with calibrated data in a construction design document,and the first evaluation result is obtained; overbreak data of the tunnel are calculated and obtained according to the preprocessed data and compared with the control standard, and the second evaluation result is obtained; according to the preprocessed data, the underbreak data of the tunnel is calculated and obtained and compared with the control standard, and the third evaluation result is obtained; the first evaluation result, the second evaluation result and the third evaluation result are comprehensively processed so as to obtain the final evaluation result. The method and system used forevaluating overbreak and underbreak of the tunnel can be used for evaluating overbreak and underbreak of the tunnel, the calculated overbreak data and the calculated underbreak data are compared withthe control standard, and tunnel engineering is evaluated.

The invention provides a forestry health evaluation system based on aerial remote sensing. The system adopts three indexes of tree density, tree growth form and vegetation layer temperature to evaluate the health condition of a forestry, the forest health conditions are analyzed and evaluated from different angles, the three indexes can be used independently, and two or three of the three indexescan be used comprehensively, so that the forestry health research and evaluation capacity is improved. The unmanned aerial vehicle and the 3S technology are combined, so that the innovation speed of the evaluation method is increased, the quantitative research of the healthy forestry is promoted, and the relations among the evaluation indexes are balanced and known deeply, and a perfect forestry health evaluation system is established. The unmanned aerial vehicle is specially designed for the forestry health evaluation system and can obtain the data needed by multiple evaluation indexes at thesame time, an unmanned aerial vehicle flight control system and a geographic information system are combined to fully utilize the geological landform characteristics and the geographic information data of a cruise area, the cruise path design is scientific and reasonable, and the advantages of the unmanned aerial vehicle for evaluating the forestry health are fully exerted.

The present invention is one kind of water-based flow casting slurry of silicon nitride containing alpha-silicon nitride crystal whisker in the solid content of 15-40 wt%. The slurry consists of alpha-silicon nitride crystal whisker 1-10 wt%, silicon nitride powder 16-25 wt%, polyethylene imine 1-8 wt%, PVA 20-35 wt%, propylene glycol 1-8 wt%, and deionized water for the rest. It is prepared through preparing the materials including alpha-silicon nitride crystal whisker, deionized water as solvent, polyethylene imine as dispersant, PVA as adhesive, propylene glycol as plasticizer and ammonium tetramethyl chloride to regulate pH value; mixing; twice ball milling and post-treatment. It has relatively high crystal whisker content, low viscosity and high dispersivity, and is suitable for flow casting to form cast film with flat surface, homogeneously dispersed powder grains and pores, high strength and high machinability.

The invention discloses a straw burning monitoring method based on binocular stereoscopic vision and an unmanned aerial vehicle, and aims to solve the problems of inaccurate fire point monitoring information, low precision, large weather effect, high supervising cost and low efficiency. The straw burning monitoring method includes the steps: 1) presetting a cruising path, planning cruising in a GPS (global positioning system) module of the unmanned aerial vehicle by a ground operator before the unmanned aerial vehicle takes off, setting the flight path of the unmanned aerial vehicle in a farmland to be monitored and enabling the unmanned aerial vehicle to fly according to the preset cruising path after the unmanned aerial vehicle is started; 2) connecting the unmanned aerial vehicle with abinocular stereoscopic vision platform and an infrared sensor; 3) calibrating the binocular stereoscopic vision platform; 4) starting the unmanned aerial vehicle; 5) performing cruising monitoring bythe unmanned aerial vehicle: enabling the unmanned aerial vehicle to fly according to the preset cruising path, monitoring appearance of an abnormal area of an infrared heat source by the infrared sensor, and acquiring two straw burning images with different angles by double cameras; 6) processing the images; 7) performing three-dimensional reconstruction; 8) judging and processing monitoring results; 9) taking processing measures according to flashing warning.

The invention relates to a phase change material (PCM) heat exchanger device comprising heat exchanger cells (1a, 1b) operating on the regenerative countercurrent principle, phase change material (PCM) accumulators (2, 3) provided in the heat exchanger cells and a vortex tube (6, 7, 8). When the directions of the air, gas and liquid flows are cyclically reversed in the apparatus, energy is recovered into the heat exchanger cell and the PCM accumulator, and during the subsequent cycle, the energy is released from the heat exchanger cell and PCM accumulator. While one heat exchanger cell and PCM accumulator is being charged, the other heat exchanger cell and PCM accumulator are simultaneously discharged. The cool/hot flow from the vortex tube is used to enhance/create needed temperature differences. The invention is applicable to buildings, vehicles, climate control rooms, single or multiple devices such as computers, and in various processes, such as, but not limited to, cryogenic methods, and in space technology and supercritical carbon dioxide applications.

The invention discloses a device for transferring and hinge mounting of a general automotive bonnet. The device comprises a transfer machine, a control device and a detection device, wherein the transfer machine comprises a bracket and a guide rail arranged on the bracket, a slide mechanism is arranged on the guide rail, a hinge mounting table and a servo motor used for controlling the operation of the slide mechanism are arranged on the slide mechanism; the control device is used for receiving inputted instructions of different models; according to the inputted instructions, the control device can send control commands to control the hinge mounting table to switch, clamp and loosen corresponding models, and can realize the accuracy adjustment of the direction of X, Y and Z in the process of mounting hinges; after mounting the hinges, according to the received inputted instructions, the control device sends control commands to the servo motor, and the servo motor controls the slide mechanism to move to an initial position; the detection device sends a detection signal to the control device when the detection device detects a workpiece on the hinge mounting table; and according to the detection signal, the control device sends the control command to the servo motor, and the servo motor controls the slide mechanism to move to a preset station.