Abstract: The present invention relates to a mining hose connecting device and method, and belongs to the field of underground hydraulic equipment for coal mines. The mining hose connecting device comprises a joint unit, wherein the joint unit comprises a first joint and a second joint; a first fastening unit, wherein the first fastening unit is arranged symmetrically about a first plane, and the inner diameter of the first fastening unit is respectively in clearance fit with the outer diameters of the first joint and the second joint; and a second fastening unit, comprising a first fastener and a second fastener, wherein the inner diameters of the first fastener and the second fastener are respectively in clearance fit with the outer diameter of the first fastening unit.

Abstract: A method of analyzing influencing factors of a contribution rate of elastic energy of a top plate during catastrophe of a coal body; the specific steps are: taking a core on site and processing the core into a standard test piece; obtaining, by means of an indoor mechanical test, elastic moduli of the top plate and of gas-containing coal, respectively; substituting the obtained elastic moduli and thicknesses of the top plate and of the gas-containing coal into a calculation formula so as to obtain the contribution rate of the elastic energy of the top plate; and analyzing the influence of the contribution rate of the elastic energy of the top plate in the two situations of configuring the same thickness ratio and a different elastic modulus ratio and the same elastic modulus ratio and a different thickness ratio. The method has important theoretical significance and practical engineering value.

Abstract: The examples of the present invention provide a method and device for verifying a dynamic password. In the method and device, some algorithm parameters can be exchanged in public by using a DH algorithm, and thus a same key is shared safely between two entities, so as to implement the verification of the dynamic password and further improve the security of identity verification. Moreover, the method and device can be easy to use. Further, by the above technical solution, no message exchange is needed between a mobile device and a verification server, and a user does not need to pay for additional flux, so as to decrease the burden of the user and verification costs.

Abstract: The examples of the present invention provide a method and device for verifying a dynamic password. In the method and device, some algorithm parameters can be exchanged in public by using a DH algorithm, and thus a same key is shared safely between two entities, so as to implement the verification of the dynamic password and further improve the security of identity verification. Moreover, the method and device can be easy to use. Further, by the above technical solution, no message exchange is needed between a mobile device and a verification server, and a user does not need to pay for additional flux, so as to decrease the burden of the user and verification costs.