42results about How to "Small hole diameter" patented technology

The present invention discloses a running sand layer and sandy gravel layer dynamic-water double-liquid high-pressure slurry-injecting water-shutoff construction method which comprises the following construction steps: drilling a hole, flushing the hole, executing double-liquid high-pressure slurry-injecting operation and sealing the hole. The running sand layer and sandy gravel layer slurry-injecting liquid adopts an ordinary portland cement (P.O.42.5) and 40''Be sodium silicate as material for preparing the slurry, according to the weight proportion of water: cement, namely the cement slurry is prepared with the water cement ratio for 0.5-1.2:1. Then the slurry-injecting liquid is prepared with the volume ratio of cement slurry: sodium silicate for 1:0.08-0.15. The sodium silicate is taken as additive for regulating the initial setting time of the slurry-injecting liquid. The cement slurry can also be doped with fly-ash with cement consumption (weight proportion) for 10%-15%. The invention executes water-insulating construction aiming at the characteristics of large pressure of the underground dynamic water and high flowing velocity in the running sand layer and sandy gravel layer, and can obtain the maximal application sphere and optimum water-shutoff effect.

The invention discloses a flue-cured tobacco open field culture round hole type transplanting method. The method comprises the following steps: (1) carrying out land preparation, ditching, applying a basic fertilizer and ridging; (2) carrying out punching to form round holes on ridge bodies by adopting a puncher; (3) vertically placing the tobacco seedlings into the round holes in a mode that roots are downwards to carry out transplanting; (4) sprinkling root fixing water in which a seedling improvement fertilizer is dissolved along the hole walls and at the same day, spraying a pesticide; and (5) after transplanting seedlings for 3 to 5 days, checking and supplementing the seedlings, applying an additional fertilizer after 10 days, filling the round holes after 15 days, earthing to ditches until ridge bodies are full after 35 days, and then entering the management stage. The method has the following advantages that 1, the transplanting round holes have small diameters so as to cause low damage to the ridge bodies and a mulched plastic film; 2, the method has no compressing effect on soil in the holes; 3, tobacco seedling transplanting efficiency is improved; 4, the tobacco seedlings are promoted to early grow and quickly tiller and growth neatness of the tobacco seedlings is improved; and 5, the method is simple to operate and is easy to popularize. The method is suitable for planting flue-cured tobacco.

The invention relates to a measuring device for a brillouin optical sensing type continuous multipoint displacement meter. The invention aims at providing the measuring device for the brillouin optical sensing type continuous multipoint displacement meter to simplify the whole structure, reduce construction difficulty and cost and accurately justify the occurrence location of an actual transformation. The technical schemes includes that the measuring device for the brillouin optical sensing type continuous multipoint displacement meter is characterized by comprising a brillouin optical sensing type continuous multipoint displacement meter which is solidified in a drill hole through grouting, a brillouin interrogator which is connected with the displacement meter through a transmission optical cable and a data analysis computer which is connected with the interrogator through signal lines. The measuring device for the brillouin optical sensing type continuous multipoint displacement meter is suitable for the safety monitoring fields of water conservancy,hydropower and geological engineering.

The invention relates to the field of potential dame risk detection, and particularly relates to a hardened dam potential risk detection method and device applying the parallel electrical survey. The device comprises an electrode for an electrical prospecting apparatus, wherein the frame inside the electrode comprises a copper bar and a transfusion duct; conductive sponge and conductive lint sequentially coat the outer part of the middle part of the electrode. The method and the device have the advantages of convenience in field operation, flexibility in operation, low labor intensity and wide application environment since a charging mode electric hammer is adopted to drill the surface of hardened dam; the drilling hole has a small diameter, so that the work for repairing the hardened surface layer of the dam in later phase can be facilitated.

The invention discloses a construction method of a quicklime-modified soil cement pile and relates to the field of roadbed construction and restoration technology. The construction method of the invention comprises the following steps: (1) punching holes at the interval of 1-1.3 m, wherein adjacent holes are arranged in the form of square or regular triangle; (2) uniformly blending cohesive soil, cement, fly ash, quick-dissolving water glass powder and sodium polyacrylate in proportion so as to prepare a ready-mixed material; (3) preparation of a mixture: uniformly mixing quicklime lump and the ready-mixed material to prepare the mixture; (4) pile-forming compacting: compacting the holes every other rows; and (5) carrying out secondary holes pile-forming work after completion of the first holes pile-forming. The construction method has simple process, and pore-forming can be finished by a conventional machine; the reinforcement effect is good, average moisture content of a soil body is obviously lowered after the treatment, and bearing capacity of the soil body is obviously raised; the method is eco-environment-friendly and low-cost, and the construction cost is 50-70% of the cost of a slip casting method.

The invention discloses a roadway-free ground drilling fluidization coal mining method. A roadway-free ground drilling fluidization coal mining system comprises a physical fluidization coal mining part and a coal-rock mixture conveying part; the physical fluidization coal mining part comprises a coal mining vertical shaft, a high-pressure conveying pipe and a high-pressure jet device; and the coal-rock mixture conveying part comprises a process inclined shaft, a coal-rock mixture lifting vertical shaft and a coal-rock mixture conveying pipe. The bottom end of the coal mining vertical shaft and the bottom end of the coal-rock mixture lifting vertical shaft communicate with each other and are connected by adopting a directional drilling technology to form a coal-rock mixture self-flowing channel, by means of the height difference between the coal mining vertical shaft and the coal-rock mixture lifting vertical shaft, the coal-rock mixture which is cut by hydraulic power and is in a fluidized state automatically flows into a coal-rock mixture collecting bin and is pumped into the well through a slurry suction pump, the underground unmanned physical fluidized coal mining operation is achieved, and the coal mining vertical shaft, the process inclined shaft and the coal-rock mixture lifting vertical shaft can all adopt relatively small drilling apertures, so that relatively low coal mining cost is realized.

The invention discloses a construction method for grouting by adopting a highly spraying, drilling and grouting integrated machine. The construction method comprises the following steps: arranging a check ball valve at a spraying nozzle of the highly spraying, drilling and grouting integrated machine; performing drilling operation by adopting the highly spraying, drilling and grouting integrated machine, wherein a high-pressure medium which is used in a drilling process comprises the following components in parts by weight: 75 parts of cement, 45 parts of bentonite, 180 parts of clay, 6 parts of water glass and 300 parts of water; after drilling is completed, performing grouting operation directly, and simultaneously, adding 6 to 9 parts of a cement accelerating agent from the opening of a hole. The construction method has the beneficial effects that the problems of blockage of the spraying nozzle caused by the fact that fine grains in the hole fall back to the spraying nozzle because of blowing-out in a process of connecting a long drilling rod to a drilled hole and serious water leakage in the hole in the drilling process can be solved; meanwhile, the disturbance to a stratum caused by the fact that the spraying, drilling and grouting integrated machine takes air and slurry as drilling media avoided by taking the measures of the check ball valve, the drilling aperture is reduced, the drilling efficiency is improved, and the cost for treating drilling slag and protecting a wall of the drilled hole is reduced.

The invention provides an enlarged shape memory alloy anchor rod and an anchoring construction process thereof. An anchor rod supporting structure of the anchor rod comprises a rod body and a rock and earth mass. A bearing table structure is arranged at the end of the rod body. The end of the rod body is sleeved with an annular shape memory alloy component. The rod body and the annular shape memory alloy component are combined and connected through a bearing table to form an integrated shape memory alloy anchor rod body. A predrilled hole is formed in the rock and earth mass, the shape memory alloy anchor rod body is inserted in the predrilled hole, and the shape memory alloy anchor rod body composed of the shape memory alloy component with complete shape memory recovery is locked through a building, a fastener, a carrying board and a table seat. The key construction process includes the steps that the annular shape memory alloy component is manufactured, so that the shape memory alloy anchor rod body, a cylindrical alloy anchor rod anchoring system and an enlarged alloy anchor rod system are formed, and finally an enlarged alloy anchor rod anchoring structure is obtained. By the adoption of the enlarged shape memory alloy anchor rod and the anchoring construction process, the anchoring force (pulling resistance) and the durability of the anchor rod structure can be improved, the application range of the anchor rod structure can be enlarged, the purpose of supporting the rock and earth mass is achieved, the construction process is simple, operation is convenient, and the effect is safe and reliable.

The invention discloses an imaging lens compatible with visible light and near-infrared light and an imaging device, and relates to the technical field of optical imaging. The imaging lens compatible with visible light and near-infrared light comprises a first lens with negative refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with positive refractive power, a first diaphragm, a second diaphragm, a fifth lens with positive refractive power, a sixth lens with negative refractive power, a seventh lens with positive refractive power and an eighth lens with positive refractive power in sequence from front to back along the direction of incident light, wherein the fifth lens and the sixth lens form a doublet lens. According to the invention, the view field angle of the imaging lens can be improved, the high imaging resolution ratio is ensured, and the technical effect of shooting a larger range of images at the same distance is realized.

The invention relates to the technical field of atomizers, in particular to a medical atomizer, and aims at solving the problem of incomplete atomization. The medical atomizer is technically characterized by comprising an atomizer body and an atomization medicine cup connected with the atomizer body, the atomization medicine cup comprises an atomization shell, an atomization core, locking blocks and a dosing device, wherein the atomization shell is internally provided with an atomization structure and used for being held during atomization treatment; the atomization core is detachably connected with the atomization shell, arranged in the atomization shell and used for atomizing liquid such as medicine liquid; the locking blocks are fixedly arranged on the circumference of the atomization core, and the atomization shell is provided with a clamping groove; the dosing device extends to be arranged on the atomization shell, and the dosing device is a liquid storage device. The medical atomizer can reduce the accumulation in an atomization medicine cup outlet, avoids the backflow of the medicine liquid, facilitates the adjustment of an output end, and does not affect the atomization effect.

The invention provides a parahydrogen enrichment device suitable for high-flow and high-pressure conditions. The parahydrogen enrichment device comprises a temperature detection chamber, a temperaturedevice line protection pipe, a double-chamber connecting pipe, a parahydrogen enrichment chamber, a heat exchange rod, a pressure-maintaining filter cap, an input interface, a cooling pipe, an outputinterface, a catalyst and a temperature display, wherein the temperature detection chamber is connected with the cooling pipe, the double-chamber connecting pipe and the temperature device line protection pipe; the double-chamber connecting pipe is connected with the temperature detection chamber and the parahydrogen enrichment chamber; the parahydrogen enrichment chamber is in a sleeve form andis provided with the heat exchange rod and an outer pipe; the bottom of the parahydrogen enrichment chamber is connected with the double-chamber connecting pipe; the top of the parahydrogen enrichmentchamber is connected with the output interface; an annular cavity between the heat exchange rod and the parahydrogen enrichment chamber is filled with a catalyst; the heat exchange rod is mounted atthe bottom of an inner cavity of the parahydrogen enrichment chamber; the pressure-maintaining filter cap is provided with a filter layer and a pressure-maintaining layer and mounted at the top of theheat exchange rod; filter air holes are formed in the bottom of the pressure-maintaining filter cap; and pressure-maintaining air holes are formed in the side wall of the top of the pressure-maintaining filter cap. By means of such a technical scheme, heat transfer effect can be improved, certain pressure is kept, and high-flow conversion efficiency is improved.

The invention provides a silencing device used for a transformer cooler draught fan. The silencing device comprises a silencing wind tunnel, a first silencing component, a second silencing component and a silencing material. The first silencing component is arranged in the silencing wind tunnel, the second silencing component is arranged in the first silencing component, windward parts of the first silencing component and the second silencing component form a taper structure, each of the first silencing component and the second silencing component is provided with several micropores and is filled with the silencing material. According to the invention, two layers of silencing components being of taper structures are arranged creatively, the silencing wind tunnel is arranged on the periphery of the silencing components, micropores are formed in the sidewalls of the silencing components, the silencing components are filled with silencing cotton, a prevention-type structure capable of reducing high-intermediate frequency noise and a resistance-type structure capable of reducing intermediate-low frequency noise are formed, the silencing frequency band is widened, the pressure loss is reduced, air flow regeneration noise is reduced, and a good silencing effect is achieved.

The invention discloses a method for controlling energy of a laser drilling machine. The method is characterized by comprising the steps that during laser drilling, non-constant laser power is provided, and the non-constant laser power is utilized for carrying out laser drilling , wherein a method for controlling the non-constant laser power comprises the following steps that 1, waveform parameters are edited, the waveform parameters are sent to a waveform controller, the waveform controller outputs waveform pulse, and the waveform pulse drives a laser to work; and 2, the waveform parameters are changed, the waveform parameters pass through the waveform controller, different kinds of waveform pulse are generated, and the laser is driven to output different kinds of power. According to themethod, a waveform is divided into small sections, the DA values of the small sections are modified, different waveforms are set randomly, different waveforms drive the laser to provide non-constant power, and the drilling taper of laser drilling is improved.

The invention relates to a reinforcing steel bar sleeve-free type soil anchor rod anchor head. The reinforcing steel bar sleeve-free type soil anchor rod anchor head comprises a barrel-shaped anchor rod wall defined by a plurality of sets of reinforcing steel bars (1) which are arranged at equal intervals and in a spaced manner, a bottom plate (3) is arranged at the bottom of the anchor rod wall,a top plate (4) is arranged at the top of the anchor rod wall, the lower portion of the anchor rod wall is bent to be a cone-shaped body, and the middle portion of the top plate (4) is provided with finishing rolled deformed steel bars (2). The single soil anchor rod ultimate pulling resistance is greater than that of an existing anti-floating pile; and the reinforcing steel bar sleeve-free type soil anchor rod anchor head is convenient to construct and relatively economical.

The invention discloses a detector for the burying depth of an antiseepage film of a dam and a using method of the detector. The detector comprises a penetration rod, the penetration rod is inserted into a bore hole at one side of the antiseepage film via a fixing device, the bottom of the penetration rod is provided with a measuring electrode and a resistivity measuring instrument, the measuringelectrode and the resistivity measuring instrument are connected with a control display via a first lead in the penetration probe, the fixing device is installed in an orifice at one side of the antiseepage film, the penetration rod is inserted into the bore hole at one side of the antiseepage film slowly in segments via the fixing device, change of the current density with the depth in the control display is observed, and after a peak of the current density, the scale, corresponding to the current density peak, in the penetration rod body is read, and serves as the burying depth of the antiseepage film. After that dam soil is electrified, the current density peak in the bottom of the antiseepage film is detected, a measuring result is high in accuracy, the aperture of the bore hole formedby the detector in the dam is small, and damage on the dam itself is low.

The invention relates to a manifold device (100) for a high pressure mass flow meter and a manifold assembly (10). The manifold device (100) comprises a rectangular body (110); the upper surface of the rectangular body (110) is provided with two sets of bosses (120) connected with measuring tubes (400); boss channels (121) are formed in the bosses; threaded holes (130) are formed in the two end faces of the rectangular body (110) respectively; and each threaded hole (130) is in fluid communication with the boss channels (121) in the corresponding set of bosses (120).