35results about How to "High environmental requirements" patented technology

The invention discloses a super-long tunnel clean water and sewage separation draining structure suitable for cold regions. A tunnel opening segment draining structure, a tunnel body segment drainingstructure, an outside-tunnel clean water trench, an outside-tunnel deeply buried trench, an outside-tunnel sewage trench and a purified water pond are included; the tunnel opening segment draining structure comprises a center trench and side type sewage trenches A; the center trench is deeply buried at the position, lower than the freezing depth, of a main tunnel opening segment; the two sides ofthe main tunnel opening segment are each provided with the corresponding side type sewage trench A; the tunnel body segment draining structure comprises side type clean water trenches and side type sewage trenches B; and the two sides of a main tunnel body segment are provided with the side type clean water trenches and the side type sewage trenches B. The super-long tunnel clean water and sewageseparation draining structure suitable for the cold regions has the beneficial effects that clean water and sewage separation discharging treatment during the tunnel construction and operation periodis achieved, and high environment requirements are met; a tunnel opening segment and a tunnel body segment are separately provided with the draining structures, the heat preserving requirement for draining in the cold regions is met, and it can be effectively prevented that underground water seeps into a tunnel and a freezing disaster happens; and a service tunnel is utilized for assisting in enhancing the main tunnel draining capacity, and super-large water amount discharging of a super-lone tunnel is achieved.

The invention discloses a bamboo-wood fiber wallboard and a preparation method thereof. The base material of the bamboo-wood fiber wallboard comprises 75-100 parts by weight of PVC resin, 75-100 parts of calcium carbonate powder, 2-15 parts of Bamboo fiber powder, 5-7 parts of stabilizer, 0.8-1 part of foaming agent, 5-8 parts of foam regulator, 0.4-1 part of stearic acid, 0.5-1 part of PE wax, 0.3 ~1.1 parts of substrate surface hydrophilic modifier and 2~4 parts of acrylate impact modifier, a kind of preparation method of bamboo wood fiber wallboard comprises a) mixing, b) extruding and c) covering membrane. In the present invention, by adding a substrate surface hydrophilic modifier such as polyethylene glycol or polyvinyl alcohol and adding an acrylate impact modifier such as AIM resin or MBS resin, the wallboard substrate and PUR hot-melt adhesive can be improved. Increase the junction strength, broaden the width of processing conditions during lamination, and enhance the mechanical properties of wallboard substrates.

The invention discloses a lithium ion battery in-situ pre-lithiation method and a lithium ion battery. The method comprises the following steps of (1) matching a silicon-based negative electrode material with a positive electrode material; assembling the materials into the lithium ion battery, wherein the lithium embedding volume of the silicon-based negative electrode material is N1; the lithiumremoval volume is N2; the charging capacity of the positive electrode material is P1, and the discharging capacity is P2; N2 / N1 is greater than P2 / P1; N1 / P1 is smaller than N2 / P2; the value of N2 / P2 is 1.02 to 1.20; the value of N1 / P1 is 0.85 to 1.05; (2) activating the lithium ion battery in different stages; at the first stage, charging the lithium ion battery until the capacity is not higher than N1 / P1*100 percent SOC1; performing discharging until the voltage is not lower than the lower limit voltage of a battery design voltage range; at a second stage, performing charging until the capacity is not higher than 100 percent SOC2; performing discharging until the voltage is not lower than the lower limit voltage of the battery design voltage range; performing activation for 3 to 30 weeks.The manufacturing work procedure of the lithium ion battery is not increased by the invention; the operation is safe and convenient. The lithium ion battery comprising the in-situ pre-lithiation silicon-based negative electrode obtained by the method has the advantages of high energy density, long circulation and the like.

The invention discloses a wireless automatic sound target reporting system. The system comprises an optical-electronical target and a target reporting display system, wherein the optical-electronical target comprises a target frame and a target core arranged in the target frame; the target core comprises an optical-electronical matrix module, a data collection module, a data processing module and a wireless transmitting module which are sequentially and electrically connected; the target reporting display system comprises a wireless receiving module, a computer processing module, a display module and a sound module; and the computer processing module is used for controlling the display module to perform bullet point simulation and driving the sound module to perform voice target reporting. According to the wireless automatic sound target reporting system, target paper does not need to be replaced for a long time, the shooting service life of the target paper is prolonged, the requirement for a shooting range site is avoided, a line does not need to be erected, the extremely-high stability and reliability are achieved, and the maintenance cost is greatly reduced; and through computer resolving and programming, automatic sound target reporting is achieved, manual target reporting errors are reduced, and life safety of target reporting personnel is ensured.