Abstract: A method for reinforcing soft ground by post-grouting combined with pressurized vacuum preloading is proposed, by pre-burying prefabricated vertical drains and air-boosted pipes in granular material piles, and the air-boosted pipes are used as grouting pipes to reduce the number of times of piling, which not only improves the construction efficiency, but also reduces the structural disturbance of the soil and the influence of smear effect, thus reducing the impact on the radial permeability and the radial consolidation coefficients. The method does not use geotextile bags for granular materials, which can avoid the problem of forming a localized clogging area around the geotextile bags, and the method not only improves the efficiency of vacuum transfer in a pre-consolidation stage, but also improves the grouting effect in the later stage, effectively enhances the strength of soft soil and makes granular material piles and the surrounding soil form composite ground.

Abstract: A method for reinforcing soft ground by post-grouting combined with pressurized vacuum preloading is proposed, by pre-burying prefabricated vertical drains and air-boosted pipes in granular material piles, and the air-boosted pipes are used as grouting pipes to reduce the number of times of piling, which not only improves the construction efficiency, but also reduces the structural disturbance of the soil and the influence of smear effect, thus reducing the impact on the radial permeability and the radial consolidation coefficients. The method does not use geotextile bags for granular materials, which can avoid the problem of forming a localized clogging area around the geotextile bags, and the method not only improves the efficiency of vacuum transfer in a pre-consolidation stage, but also improves the grouting effect in the later stage, effectively enhances the strength of soft soil and makes granular material piles and the surrounding soil form composite ground.

Abstract: The present invention provides a method and a device for generating an HD wallet name card and a method and a device for generating an HD wallet trusted address. The method for generating the HD wallet name card comprises: first signature information is obtained by digitally signing first user information with a first private key; second signature information is obtained by digitally signing second user information with a first trusted private key; and the first user information, the second user information, the first signature information and the second signature information are integrated to generate the HD wallet name card. The present invention is advantageous in that the wallet information is digitally signed with the preset first trusted private key and the first private key, thus preventing the HD wallet name card from being forged, intercepted, and modified by a third party so as to ensure the security of transaction.

Abstract: The present invention provides a method and a device for generating an HD wallet name card and a method and a device for generating an HD wallet trusted address. The method for generating the HD wallet name card comprises: first signature information is obtained by digitally signing first user information with a first private key; second signature information is obtained by digitally signing second user information with a first trusted private key; and the first user information, the second user information, the first signature information and the second signature information are integrated to generate the HD wallet name card. The present invention is advantageous in that the wallet information is digitally signed with the preset first trusted private key and the first private key, thus preventing the HD wallet name card from being forged, intercepted, and modified by a third party so as to ensure the security of transaction.

Abstract: The present invention provides a method for generating a seed and a device thereof. The method includes: obtaining an algorithm key and generating a target seed algorithm sequence by the algorithm key and a seed algorithm group; obtaining inputted seed generation data; and finally inputting the seed generation data into the target seed algorithm sequence to generate a seed corresponding to the seed generation data. A target seed algorithm is generated by a seed selection algorithm, the algorithm key, calculation rounds and a target seed algorithm group are inputted into the seed selection algorithm, and the target seed algorithm adopted in the current calculation round is outputted. The target seed algorithm for all calculation rounds is combined into a target seed algorithm sequence. This invention increases the computational complexity of the third party through the seed generation data to collide the seed, thereby improving the security of the seed.