69results about How to "Avoid the risk of collapse" patented technology

The invention relates to a boiler chimney and the method for forming inner-wall protective element. The inventive boiler comprises an outer frame and a liner. Wherein, said liner has a inner-wall protective, which is formed by a polymer silicate solidify layer, a epoxy paint solidify layer while said two layers can be resistant to acid and high temperature, and a strength layer; the polymer silicate solidify layer is fixed on the inner surface of liner; the epoxy paint solidify layer is fixed on the polymer silicate solidify layer; the strength layer is glass fiber grid cloth, which is extended and embedded into the polymer silicate solidify layer, or individually embedded into the polymer silicate solidify layer and the epoxy paint solidify layer to form the inner-wall protective element. Said invention has lower cost, the high temperature resistance, antisepsis property and the anti-leakage property.

The invention discloses a plugging and building method suitable for a remaining mine tunnel and a mine underground tunnel. The side walls of the mine tunnel and the underground tunnel are blocked through interlayer wall bodies; the inner space of the mine tunnel and the inner space of the underground tunnel are divided into a plurality of sectional type filling units; each sectional type filling unit is filled with materials, tailings and waste low-grade ore; and composite flora containing SRB and a long-acting carbon source are sprayed to the surfaces of the filling materials so as to inhibitoxidation of sulfide, reduce sulfate and precipitate heavy metal. The interlayer wall bodies are composed of parallel wall bodies and hydrophobic particle materials filled between interlayers, the upper ends of the interlayer wall bodies and the top of the tunnel are blocked through foam concrete within a certain height range, if the pressure in the tunnel is too large due to the rainy season andother reasons, the strength of a foam concrete layer is low, the top end is locally cracked to form a similar pressure relief valve, wall body cracking and collapsing caused by the too high water pressure in the tunnel can be effectively avoided, and therefore the safety of sectional type filling unit plugging is guaranteed.

The invention discloses an irrigation and draining brake which comprises a flashboard frame and a flashboard, wherein a water inlet through hole is formed in the flashboard frame. Guide grooves are formed in both sides of the flashboard frame. Both sides of the flashboard are contained in the guide grooves and can move along the guide grooves, positioning adjusting teeth are arranged on the inner wall of the guide grooves, and elastic clamping tongues which are matched with the positioning adjusting teeth are arranged on both sides of the flashboard. The irrigation and draining brake is fixed on an opening of a ridge, irrigation and draining work is controlled by moving the flashboard, and water level height can be adjusted. The irrigation and draining brake has the advantages of being convenient to use, safe and reliable.

The invention belongs to the field of signal processing, and particularly provides a distributed tracking method for an extended target. According to the method, a heterogeneous network is considered,the number of scattering sources observed on each node obeys Gaussian distribution of different mean values, and the observation noise power of each node is different. The method comprises the following steps: firstly, each node calculates to obtain an intermediate estimated value of the dynamic state and shape characteristic of an extended target by exchanging information with neighbor nodes thereof; and then, each node propagates the intermediate estimation result in the neighborhood, and final estimation results of the dynamic state and the shape characteristics are obtained respectively.The method mainly aims at an extended target, and in a distributed network, each node can estimate dynamic states such as the position, the speed and the acceleration of the target and shape characteristics such as the direction and the size of the target at the same time. Compared with a non-communication method of each node, the method provided by the invention can effectively improve the tracking performance of each node, the tracking performance is close to a centralized method of sending the information of each node to a fusion center for processing, Meanwhile, the risk that the whole system crashes when the fusion center goes wrong can be effectively avoided.

The invention discloses a drawing method of a variable length and width background of a vehicle-mounted entertainment system. The vehicle-mounted entertainment system comprises a frame based on a QT drawn graph in Microsoft embedded operation system WinCE, a disk file system which is used for storing various display graph files, and a memory. The drawing method comprises the steps that a background drawing program of the vehicle-mounted entertainment system is started; the size of a large background graph is determined; nine graph resources needed by the background drawing program are loaded into the memory; whether the memory space of the background graph is successfully loaded is determined; and after successful loading, the corresponding background graph is drawn at a corresponding position on a large background graph according to the size of the large background graph. According to the invention, Flash space taken by a background graph resource is reduced; when the background is drawn, the graph loading speed is improved; the work efficiency is improved; time required by background graph drawing is reduced; the system efficiency is improved; and increased crash risk caused by failed memory application is avoided.

The invention discloses a prefabricated double-T plate end connecting structure and a construction method thereof. The prefabricated double-T plate end connecting structure comprises angle steel connecting a prefabricated beam and a prefabricated double-T plate web, and a bridging connecting plate connecting adjacent flange plates, wherein a round hole and a horizontal long round hole are formed in the two side plate faces of the angle steel correspondingly; the other end of a threaded connecting piece penetrating through connecting holes in the two sides of the bridging connecting plate is positioned in a sleeve in a flange plate interlayer; the sleeve is anchored on a plate piece pre-buried in the flange plate interlayer; an anchoring steel bar pre-buried in the flange plate interlayer is fixed to the plate piece; a first tubular body matched with the round hole of the angle steel is pre-buried in the prefabricated beam; a second tubular body matched with the long round hole of the angle steel is pre-buried in a web interlayer; a first connecting bolt penetrates through the first tubular body; the two ends of the first connecting bolt penetrate through the round holes of the angle steel on the corresponding sides correspondingly and are connected through threaded fasteners; a second connecting bolt penetrates through the second tubular body; and the two ends of the second connecting bolt penetrate through the long round holes of the angle steel on the corresponding sides correspondingly and are connected through threaded fasteners.