89results about How to "Short formation time" patented technology

The invention discloses a construction method for a soft surrounding rock section of a large-span tunnel portal. The construction method comprises the following steps of: excavating an arc-shaped pilot tunnel on the top of a tunnel section; performing initial support in time after the excavation process is finished and performing temporary support at the same time; excavating upper pilot tunnels on the left side wall and the right side wall at the same time; performing initial support in time after the excavation process is finished and performing temporary support on the core soil side wallsat the same time; excavating lower pilot tunnels on the left side wall and the right side wall at the same time, wherein the depth of circulation drilling for each time is 0.5 m; performing initial support in time after the excavation process is finished and performing temporary support on the lower parts of the core soil side walls at the same time; performing large core soil excavation; reserving core soil steps; installing inverted arch steel frames and injecting C25 concrete in time, so that the initial support of the whole tunnel forms a closed ring as soon as possible; and dismantling the temporary support. By the top arc side wall pilot tunnel construction method, vault subsidence can be favorably controlled; and the method is applicable to tunneling excavation construction for strongly differentiating a surrounding rock portal when the tunnel portal is under the protection of a large pipe roof section.

The invention discloses a container formation process for a lead-acid battery. The process generally comprises the following steps: 1, adaptation and activation in an early stage; 2, continuous and steady container formation; 3, discharging and buffering; 4, deep container formation; 5, electrolyte supplementing; and 6, adjustment on the consistency of the electrolyte in the battery. By utilizing the process, the time for container formation can be effectively saved; meanwhile, because the design of the process completely meets the reaction rule of a counter electrode and the electrolyte, the process has the advantages of short formation time, less power consumption and the like; and the lead-acid battery subjected to formation has the advantage of longer service life.

The invention relates to a lithium ion battery formation process and a lithium ion battery obtained by the lithium ion battery formation process. The lithium ion battery formation process adopts a mode of combining segmented negative pressure and segmented current, and the formation process comprises three stages: in the first stage, the negative pressure is 20-60Kpa, and the lithium ion battery is charged to 5-15% SOC at a constant current of 0.05-1 C; in the second stage, the negative pressure is 80-90 Kpa, and the lithium ion battery is charged to 20%-30% SOC at a constant current of 0.1-0.3 C; in the third stage, the negative pressure is 20-40 Kpa, and the lithium ion battery is charged to a cut-off voltage at a constant current of 0.3-0.5 C. The formation process is beneficial to exhausting in the formation process, reducing the liquid loss, avoiding swelling of the battery cell and improving the formation interface; the process is simple and convenient to operate, short in formation time and convenient to produce, and meanwhile, the formation process adopts one-time full charge, so the interface side reaction of the electrode and the electrolyte is fully carried out, and thecapacity consistency and the self-discharge screening consistency are improved.

The invention discloses a formation method for a lithium ion battery. The method comprises the steps of carrying out formation on the lithium ion battery, after the lithium ion battery is filled with an electrolyte and is subjected to standing, at a temperature of 35-55 DEG C by 0.01-0.5C charging current under a vacuum-pumping condition. The method adopts high-temperature negative pressure for realizing formation; the exhaust gas generated from the internal of the battery in the formation process is exhausted in time; a uniform and stable SEI film is formed on the negative electrode of the lithium ion battery at a high-temperature environment; the battery processed by the formation method has the advantages of high capacity volatilization of active materials, low internal resistance, low expansion rate, long cycle life and long storage life, so that the product quality is improved, and the service life of the battery is prolonged; and meanwhile, the method has the advantages of short formation time, high equipment utilization ratio and low energy consumption, so that the method is an efficient formation method suitable for batch production of the lithium ion batteries.

A rapid forming process used for internal formation of lead-acid storage batteries relates to a lead-acid storage battery. At present, the forming processes for lead-acid storage batteries include the following methods: 1, external forming method which causes greater pollution and is more energy consumption; and 2, conventional internal forming method which takes too long time for formation and is low in production efficiency. The rapid forming process for internal formation of lead-acid storage batteries is characterized in that a lead-acid storage battery is filled with an electrolytic solution, stands for 2-3 hours, and then is subjected to charge / discharge formation; the whole process allows the current deviation within plus or minus 15% as well as the voltage deviation within plus or minus 1.0%; the internal temperature of the lead-acid storage battery is controlled in range from 25 to 65 DEG C; and during the charge process, the first four stages take charge voltage as the conversion condition, and the fifth stage takes charge duration as the conversion condition. The invention has the benefit that the rapid forming process used for internal formation of lead-acid storage batteries has the advantages of relatively short formation duration, high production efficiency, cleanness, environmental protection and low energy consumption.

The invention relates to a wastewater treatment device with an anaerobic dynamic membrane reactor, which comprises an anaerobic biological reactor and a dynamic membrane assembly, wherein the anaerobic dynamic membrane comprises a lower sludge layer and a sludge and water separation layer, and the dynamic membrane assembly is arranged in the anaerobic reactor. The dynamic membrane with the sludge layer is formed so as to improve the sludge and water mixed liquid separation effect of a large-hole support body, and good filtration and separation functions can be achieved; simultaneously, methane gas doped in the mixed liquid is separated, so that the separation function of a three-phase separator in the traditional anaerobic reactor to the liquid, solid and gas can be replaced; and the upper space of the upflow type anaerobic sludge reactor can be effectively utilized, and the anaerobic biological treatment and dynamic membrane separation are combined, so that the outgoing water has good quality after the treated wastewater is filtered and separated by the dynamic membrane. According to the invention, a supporting net of the dynamic membrane is wide in material selection and low in cost, the backwashing air pressure of the dynamic membrane is 50-100kPa, the backwashing strength of the water is 10-20 times of filtration flux of the dynamic membrane, and the backwashing is convenient.

The invention provides a charge and discharge method for the container formation of green accumulator plates. The charge and discharge method is characterized in that: the charge and discharge method includes the following steps that: charging is carried out for 8 to 10 hours at the stage A, the initial charging current is NC, and the current is increased by x each hour; charging is carried out for 3 to 4 hours at the stage B, the charging current is kept at the maximum charging current at the stage A, and discharging is started after 0.5 hours of charging and carried out for one time every 0.5 hours; the charging time at the stage C is equal to the charging time at the stage A, the current is decreased by x each hour, and discharging is carried out for one time every 0.5 hours from the beginning of charging to the last hour of charging; and the value of x is determined by the following formula: T multiplied by NC added with 2 multiplied by [x added with 2x added with 3x added with 4x added with 5x added with 6x added with 7x added with ... added with (t1 minus 1) x] added with t2 multiplied by t1x equal to MC. The charge and discharge method accords with the charge and discharge characteristics of the green accumulator plates, the charge current is always within the acceptable range of an accumulator, moreover, discharging is carried out timely, so that the polarization voltage can be quickly and effectively eliminated, the charging speed is high, and the formation time is short.

The invention discloses a diamond surface metallization method. The surface of the cleaned diamond particles is coated with a layer of organic adhesive, and then fully mixed with the solder, and the diamond particles adhered to the solder are screened out and dispersed in the The ceramic plate or mica plate is placed in a vacuum or inert atmosphere and heated to the melting temperature of the solder to form a solder alloy layer on the surface of the diamond particles. If the sieved diamond particles are dispersed into other metal or alloy powders, compacted and placed in a vacuum or an inert atmosphere and heated to the melting temperature of the solder, a double-layer alloy layer can be formed on the surface of the diamond particles. The advantage of the present invention is that the metallurgical bond is formed between the metallized layer and the diamond particles, the bonding force is much higher than that of mechanical wrapping, the metallized layer is formed in a short time, the thickness is large, and two layers of metallized layers of different materials can be formed at the same time without Perform secondary or tertiary treatments.

The invention relates to the technical field of lithium battery formation, in particular to a method for cyclic formation of low current disturbance in the vicinity of a high SOC of a lithium battery.The method for cyclic formation of low current disturbance in the vicinity of high SOC of the lithium battery comprises the following step: (1) according to the SOC curve of the lithium battery, determining the SOC of the lithium battery; (2) charging the lithium battery to 50% SOC to 80% SOC at a first charge rate, standing for 0.5-2h; (3) performing cyclic charging and discharging on the lithium battery at charge-discharge rate of 0.05 to 0.2 C in the range of + / -3% to + / -9% SOC based on the current SOC, performing vacuum treatment on the battery at the same time, and after the cycle is finished, standing for 0.5-2h; and (4) discharging the lithium battery to a lower limit voltage at a first discharge rate. The lithium battery is subjected to low current cyclic formation in the vicinityof a relatively high SOC, which is in favor of full occurrence of a side reaction inside the battery, thereby forming a stable and compact SEI film, and generated gas is effectively discharged through vacuum treatment, the smoothness and uniformity of the interface of a pole piece are improved, and the long cycle life of the lithium battery is prolonged.

The invention discloses a decoloring flocculant for treating soluble azo dye printing and dyeing wastewater and an application method thereof. A preparation method for the decoloring flocculant comprises the following steps of: (1) continuously stirring 50-80% by weight of inorganic high molecular flocculant in a breaker and heating for 5-10min; (2) adding 9-45% by weight of sulfate into the breaker, stirring for 10-30min at medium speed; (3) adding 0.01-0.05% by weight of quick sinking agent into the above substances, stirring, standing, depositing, and taking supernatant; (4) adding 5-10% by weight of surfactant into the supernatant to form an emulsion; and (5) diluting the emulsion by 10 times via distilled water to obtain clear transparent light yellow liquid. The transparent light yellow liquid in percentage by weight of 0.1-0.2% is added into the bright red soluble azo dye printing and dyeing wastewater, and the wastewater is quickly stirred for 1-3min at a speed of 300r / min, stirred for 10-15min at a speed of 80r / min, stood and deposited to obtain the colorless transparent printing and dyeing wastewater as the yielding water.

The invention discloses a rapid formation method of a lead storage battery, and belongs to the technical field of storage batteries. The rapid formation method of the lead storage battery includes thesteps: firstly, a to-be-formed battery after adding acid is put in a thermostatic waterbath for formation,thencharged to a gassing potential in a small current gradient increasing way in the initialstage of formation and then charged in a current gradient decreasing way, and polarization is reduced; in the intermediate stage of formation, firstly, charging is conducted to the gassing potential through a large current and then conducted in a gradient decreasing way, conversion of active substances is quickly achieved, and the charging time is saved; and when polarization is large, the currentdischarge is used for discharging, depolarization is achieved, the battery charge receptivity is improved, time consumption of the stage is reduced, and the production efficiency is improved. According to the rapid formation method of the lead storage battery, through process adjustment, the water loss of a battery electrolyte is reduced, the change of the acid density is little, polar plates arerapidly converted into the active substances at the low acid density, the low acid density forms alpha-PbO2 advantageously, and the service life of the battery is prolonged advantageously.

The invention relates to a method for extracting soybean protein by using a dodecyltrimethylammonium chloride reverse micellar solution, which is characterized by comprising the following steps: adding full-fat soybean powder or soybean meal powder to a dodecyltrimethylammonium chloride (DTAC) reverse micellar solution, extracting, and carrying out solid-liquid separation to obtain a soybean protein solution. The invention has the following major advantages: because of the use of the dodecyltrimethylammonium chloride reverse micelle, the formation time of the reverse micellar system is short, and the preparation is more convenient and faster; because the extraction of soybean protein by DTAC / n-heptane-n-hexyl alcohol reverse micellar system is assisted by ultrasound, the preparation is more convenient and faster; the extraction rate is obviously improved, and the extraction time is shortened; in the extraction process, the protein is enclosed by water environment in the reverse micelle, the water environment is similar to the intracellular environment and the conditions are wild, thereby ensuring that the protein can not be denatured easily and the bioactivity thereof can be kept; compared with other surfactants, the residual surfactant in the soybean protein, i.e. the dodecyltrimethylammonium chloride, is easy to separate, thereby achieving high product purity; and the method has the advantages of no acid and alkaline wastewater discharge and no pollution.

The invention relate to the technical field of plant grafting, and particularly to a method for making and using a band-aid used for grafting plants. The method for making band-aid used for grafting plants is characterized in that, a waterproof protection film seals the periphery of upper and lower layers of cotton ribbon gauze which is saturated after being immersed in an immersion solution using a hot adhering method. The immersion solution is prepared from macroelement, microelement, ferric salt, an organic component, a hormone, a bactericide and sterile water, and the pH value of the solution is within the range from 5.7 to 6.0. The method for using the band-aid used for grafting plants comprising removeing the thin protection film on the upper layer of the band-aid to expose the ribbon gauze containing the immersion solution, tightly wrapping and covering a wound to be used for grafting, and winding the periphery of the outer layer of the band-aid using a binding film special for grafting to tightly wrapping the band-aid, so as to making the wound tightly closed in the binding film special for grafting. The band-aid used for grafting plants can induct callus of a wound, provide nourishment, prevent from pollution, moisturize and shade the wound, so as to facilitate healing of a grafting wound and raise the survival rate. The band-aid used for grafting plants is low in production cost, convenient to use and can widely applied to plant grafting.

The invention discloses a novel storage battery production method. The novel storage battery production method comprises the following steps: preparing raw material powder for preparing a porous carbon material, mixing the raw material powder for preparing the porous carbon material and raw materials for preparing a positive and negative active substances, stirring and preparing a paste-like substance, and smearing the paste-like substance on a graphite grid; carbonizing the paste-coated graphite grid, activating, perforating, cooling, thus obtaining a positive polar electrode and a negative polar electrode; laminating the positive polar plate, a glass fiber partition plate and the negative polar plate to form a multilayer polar plate, assembling the laminated multilayer polar plate into abattery box, and injecting electrolyte into the battery box; after the battery box is filled with the electrolyte, standing for 30 minutes, charging and discharging a battery, and activating the positive and negative active substances; and after the battery is domesticated, adjusting the concentration of the electrolyte in the battery, and sealing a liquid injection hole of the battery. By adopting the novel storage battery production method, not only can the problem of the complicated traditional production process be solved, but also the problem that the environment is severely polluted inthe production process can be solved, the service life of the battery can be prolonged, and the high-magnification charging-discharging performance can be improved.

The invention discloses a high-efficiency baffling plate type demister which comprises baffling blades, water collecting tanks, a first supporting assembly and a second supporting assembly, wherein the two ends of the baffling blades are respectively connected with the first supporting assembly and the second supporting assembly, the baffling blades are arranged in parallel, the water collecting tanks are arranged on the baffling blades at intervals, and the water collecting tanks extend in the width direction of the baffling blades; each water collecting tank comprises an arc plate, the arc plate comprises a connecting end and a free end, and the connecting ends of the arc plates are connected with the surfaces of the baffling blades. Therefore, compared with the prior art, the high-efficiency baffling plate type demister disclosed by the invention has the advantages of high demisting efficiency and good demisting effect.

The invention relates to a method for inducing formation of a coral fungus entity. According to the technical scheme, the method comprises the steps that after coral fungus slope strains are activated, fungus blocks are taken to be inoculated into a PDA culture medium, constant temperature culture is carried out for 15-40 d at 25 DEG C to 28 DEG C, mycelia and a solid culture medium are cut into small blocks and are soaked into organic solvents, organic leach liquor is concentrated to obtain extracts, extraction is carried out through ethyl acetate and pure water with the ratio of 1:1, an ethyl acetate phase is dehydrated and evaporated to be dried, and coral fungus organic crude extracts are manufactured. The organic extracts are directly added to the coral fungus culture medium, or a certain number of components after further separation are added to the coral fungus culture medium, the formation of the coral fungus entity can be induced, growth is 7-10 days earlier than normal growth, and growth is even.

The invention discloses a snorkeling sandwich type water surface floating object fishing overlapped net and belongs to the field of fishing equipment. According to the snorkeling sandwich type water surface floating object fishing overlapped net, after the fishing overlapped net is spread on the surface of a water body, under the action of ball-attached wires, a floating fishing net floats on thewater surface, concealed inverted umbrellas are submerged, dissolving rings are quickly dissolved, and thus the concealed inverted umbrellas are released in time so that the submerged concealed inverted umbrellas can form a temporary concealed fishing net under the water, and matched with the floating fishing net on the water surface, a sandwich-like structure is formed, floating objects are limited between the temporary net under the water and the concealed inverted umbrellas on the water surface, and therefore the fishing difficulty of the floating objects is effectively lowered, and the fishing efficiency is improved. In the process, under the action of through grooves and aqueous-chromic blocks, shoreside fishers can be reminded of the spreading condition of the concealed inverted umbrellas in time through the color changing condition of the aqueous-chromic blocks, and thus fishing is performed in time, and fishing efficiency is effectively improved.

The invention discloses a multi-stage circulatory forming and activating process for a lead-acid storage battery for storing energy. A five-charging and four-discharging principle is adopted, shallow discharging is carried out twice, high current discharging is carried out once, full capacity discharging is carried out once, in a charging process, average single voltage is within 2.6 V, charging is implemented by 1-2 steps in each of five charging stages, and before forming is finished, low-constant-current charging is implemented once to remove free acid. By the multi-stage circulatory forming and activating process for the lead-acid storage battery for storing energy, charging acceptance of a pole plate is improved, consistency of batteries is good, capacity attenuation rate is low, cycle life is prolonged, and use requirements of the lead-acid storage battery for storing energy are met. The multi-stage circulatory forming and activating process for the lead-acid storage battery for storing energy is short in forming period and high in efficiency.

The invention relates to a metal surface treatment technology, in particular to a copper matrix surface laser cladding technology. The purpose is to provide a cladding technology, and a specific cladding material and specific laser parameters are adopted, so that the cladding layer formed on the copper matrix surface is compact in tissue and free from cracks and pores and forms good metallurgical bonding with the copper matrix surface. The copper matrix surface laser cladding technology includes the steps of polishing, decontaminating, laser cladding and cooling. The anti-abrasion and anti-high-temperature alloy material adopted in the laser cladding step is prepared from 20-29% of Ni, 18-28% of Fe, 6-10% of C, 10-23% of Co, 2.5-4.5% of B and 3.0-5.0% of Si. According to the technological parameters of a pulse Nd:YAG laser device, the focal length of a focus lens is 200-250 mm, the cladding power P is 800-1000 W, the diameter of a light spot is 2.5-4.0 mm, and the cladding scanning speed V is 20-45 mm / s; the overlap rate is 50%.

The invention discloses a compound flocculating agent, as well as a preparation method and application thereof. The compound flocculating agent is prepared from a component A and a component B in a weight ratio of (1-3):(1-3), wherein the component A contains diatomaceous earth, bentonite, smectite, sodium chloride, carclazyte, kaolin, plant essential oil, fruit green pigment and deionized water; and the component B contains cationic polyacrylamide, plant essential oil, fruit green pigment and deionized water. The preparation method comprises the following steps: adding all ingredients in the component A into a reactor at normal temperature and normal pressure to form the component A; slowly adding cationic polyacrylamide into the reactor, and stirring to form the component B. When the compound flocculating agent is used, the component A is put into sewage, and the component B is put into the sewage for coagulating. According to the compound flocculating agent, the flocculate has short forming period and thick and big shape, and is easy to pick up, the COD removal rate is more than 80 percent, the turbidity removal rate for domestic sewage is more than 90 percent, and the total phosphorous removal rate is more than 92 percent. The compound flocculating agent hardly influences the pH value of treated water.

The invention provides a semiconductor structure with a micro-channel, a chip stacking structure and a preparation method, and the method comprises the steps: forming a barrier layer on a semiconductor substrate, etching the barrier layer to obtain a filling groove, etching a part of thickness of the semiconductor substrate to obtain an initial micro-channel body, transversely etching the semiconductor substrate at the side part of the initial micro-channel body to obtain the micro-channel body, and then forming the micro-channel inlet and outlet to communicate the micro-channel inlet and outlet with the micro-channel body to obtain the micro-channel. The width of the filling groove is small, so that a sealing layer is easily formed in the filling groove, and the sealing layer does not fill the micro-channel body. The micro-channel can be obtained only through one semiconductor substrate, a silicon-silicon direct bonding technology does not need to be used, the surface cleanliness requirement and the flatness requirement of the semiconductor substrate are lowered, then the preparation difficulty and complexity are lowered, and the preparation method is simple.

The invention discloses a method for establishing a high-quality anaerobic ammonia oxidation biological membrane. The method comprises the following steps: designing anaerobic ammonia oxidation inoculated sludge; determining inoculated sludge particle size distribution; selecting or designing a carrier, which has a porous structure, wherein the particle size mean value serves as the carrier pore diameter; enabling an inoculation liquid to circularly penetrate through the porous carrier, and operating for 5-10 days to complete acquisition of initial biomass. The method has the advantages of stable and continuous operation. The initial biomass develops into colonies, and the high quality anaerobic ammonia oxidation biological membrane, which has the advantages of short formation time, high mechanical stability, high ecological stability and high abundance of target microorganisms, is obtained. Based on the characteristics of aggregation and growth of anaerobic ammonia oxidation microorganisms, a system is established by integrating biological membranes, the advantages of anaerobic ammonia oxidation aggregates and flocculent sludge are fully exerted, a high-quality biological membraneis established, and the method is simple, convenient and easy to implement.

The invention provides a rotary disc with a disturbance structure for metal centrifugal atomization powder making. The rotary disc comprises a cylindrical disc body, and the disc body is provided with bulges and grooves, wherein the bulges are symmetrically arranged on the upper surface of the center of the disc by taking the circle center of the disc body as a base point and adopt a multi-circle annular distribution mode or a circle center radiation distribution mode; and the grooves take the circle center of the disc body as a base point and are staggered with the bulges. According to the rotary disc with the disturbance structure for metal centrifugal atomization powder making, a liquid film on the surface of the disc body can generate vibration under the action of the disturbance structure, the vibration forms unstable waves through propagation, and the unstable waves intensify and accelerate the process that the liquid film is centrifugally broken into liquid drops, so that the diameter of the liquid drops is smaller, and the forming time is shorter; and therefore, in the centrifugal atomization process of the disc body with the disturbance structure, the diameter of the liquid drops can be reduced, the atomization efficiency can be improved, and the powder yield can be increased.

The invention discloses a cutting seedling method for choerospondias axillaris twigs. The method comprises the operating steps and flows of seed tree treatment, scion cutting, cutting trimming, auxin treatment, cuttage substrate preparation and treatment, cuttage, post-cuttage management and transplanting. Semi-lignified twigs are taken as scions, so that the rooting rate is increased compared with hard branches; peat soil and perlite are taken substrates, the lower ends of the scions are soaked into auxin before cuttage, and water mist is intermittently sprayed onto the scions after the scions are inserted into a seed bed, so that the moisture can be effectively kept, and rooting of the scions is promoted. Overall, the cuttage method has the advantages of simple steps, convenience in management, short period and high survival rate, and a large quantity of young seedlings can be cultivated within a short time.

In order to locate points or lines of interest (A, B, C, D, A′, B′, C′, D′, 162, 163, 164) of a railway track (22), by means of a railway locating system (12), progressing on the railway track (22), a linear camera (26) pointing at the railway track (22) repeatedly acquires instantaneous linear optical data along an instantaneous measurement line (50), and an orientation device (52) of the railway locating system (12) repeatedly acquires orientation data of the railway locating system (12) with respect to a reference line (22A) of the railway track (22). By processing at least the instantaneous linear optical data, a potentially distorted bitmap image is constructed of a zone of the surface of the railway track (22), then points or lines of interest (A, B, C, D, A′, B′, C′, D′, 162, 163, 164) are identified in the potentially distorted bitmap image, before determining rectified coordinates of the points or lines of interest (A, B, C, D, A′, B′, C′, D′, 162, 163, 164), as a function of potentially distorted coordinates of the points or lines of interest (A, B, C, D, A′, B′, C′, D′, 162, 163, 164) in a reference system of the potentially distorted bitmap image and orientation data.

The invention provides a method for preparing granular sludge added with Mn+2, which comprises the following processes of: (1) placing cultivated activated sludge in a SBR (butadiene styrene rubber) reactor, filling a nutrition improver premix and aerated air from the bottom of the SBR reactor, and operating the SBR reactor for six days, wherein in each operation period, the water inlet time is 5minutes, the sedimentation time is 10 minutes, the aeration time is 220 minutes and the water outlet time is 5 minutes; (2) from the seventh day, prolonging the aeration time in each operation periodto 224 minutes from 220 minutes, setting both the water inlet time and the water outlet time as five minutes and setting the sedimentation time as 6 minutes; and (3) controlling the phase so that thesedimentation time is 3 minutes, the aeration time is 227 minutes and both the water inlet time and the water outlet time are 5 minutes, and forming round or oval particles. The granular sludge has short forming time and high efficiency. The formed granular sludge has good properties on the aspects of the sedimentation rate, the hydrophobicity, the specific gravity, the particle strength, the EPS(Expanded Poly Styrol) content and biodiversity of the particles.

The invention discloses a construction method for a weak surrounding rock section of a short-step super-large-section tunnel, and belongs to the technical field of tunnel construction. The construction method comprises the following steps that S1, a top arc-shaped pilot tunnel is excavated; s2, middle steps on the two sides are excavated left and right; s3, excavating lower steps on the left side and the right side; s4, core soil is excavated; and S5, tunnel bottom excavation and inverted arch supporting are carried out. The construction method is high in safety, fast in construction progress, short in construction period, stable in supporting structure, short in forming time of each whole ring, large in construction space, convenient for mechanical deslagging, fast in construction effect and capable of effectively shortening the closed ring forming time.

The invention discloses a battery acid circulation inner formation device and method and provides a battery acid circulation inner formation device and method used for an electro-hybrid bicycle, the device and the method have the advantages that the inner formation time is short, the formation effect is good, an acid extraction process is time-saving and labor-saving, and the production cost is low; according to the device and the method, the technical problems in the prior art that the inner formation time is long, the efficiency is low, the formation effect is poor and the like as only innerformation of an acid pot can be adopted, are solved. The device comprises a battery combination body formed by a plurality of battery units, wherein a liquid charging hole is formed in the top surface of each of the battery units; a liquid inlet pipe and a liquid outlet pipe are simultaneously connected into each of the liquid charging holes in an insertion manner; the lower port of each of the liquid inlet pipes extends above a partition board; the lower port of each of the liquid outlet pipes extends into each of the battery units and near the lower port of each of the liquid charging holes; the battery units are communicated with one another in series through butt joint of the upper port of each of the liquid inlet pipes and the upper port of the adjacent liquid outlet pipe; when in inner formation, formation electrolyte from an inlet in the top end of each of the liquid inlet pipes drips drop by drop.

The invention provides a method for forming a lithium ion battery with a mixed electrode. The active material of the mixed electrode includes lithium nickel cobalt manganate and lithium iron phosphate. The lithium nickel cobalt manganate is LiNi0.6Co0.1Mn0.3O2. The lithium iron phosphate is LiMg0.02Fe0.98PO4. The mass ratio of the lithium nickel cobalt manganate to the lithium iron phosphate is 75:25 to 80:20. The method includes performing charge-discharge cycles in a range of 3.55 to 3.65V and performing charge-discharge cycles in a range of 3.70 to 3.90V. The formation method of the presentinvention can fully activate the electrochemical activity of the active material of the mixed electrode, and improve the charge-discharge efficiency and durability of the electrode.