Patents by Inventor Yingui Gao

Yingui Gao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250059889
    Abstract: A method for screening a key stratum for overburden separation grouting in a coal mine includes: selecting overall analysis objects based on coal mine planning; conducting a primary screening of the analysis objects based on a scope of a subsidence zone; conducting a secondary screening of the analysis objects based on whether there is an old goaf; determining key stratums for screened-in analysis objects, prioritizing the key stratums based on a number of separation spaces and a range of a separation height, setting a safe height based on a diversion fissure zone, and prioritizing numbers of groutable layers based on a potential separation space and a water resistance of a rock stratum; prioritizing the groutable layers based on a fault impact; and comprehensively analyzing grouting priority levels of the key stratums based on results of the three prioritizations, and grouting separation layers of the key stratums in order of priority.
    Type: Application
    Filed: April 12, 2024
    Publication date: February 20, 2025
    Applicants: PING AN COAL MINING ENGINEERING TECHNOLOGY RESEARCH INSTITUTE CO., LTD, HUAINAN MINING (GROUP) CO., LTD, ANHUI COALFIELD GEOLOGICAL BUREAU EXPLORATION AND RESEARCH INSTITUTE
    Inventors: Hongjie SUN, Bing LI, Shikai AN, Guangqing HU, Haiyan CHENG, Yingui GAO, Lin HU, Pengfei TAO, Hao LI, Yaojun SHI, Ruiyu LIU
  • Patent number: 12146410
    Abstract: A method for dewatering a coal mine goaf by crossing a neighboring goaf is applicable to a scenario including a first goaf, a second goaf, and a third goaf located sequentially at one side of a roadway. A directional hole mechanism is provided between the roadway and the second goaf as well as between the roadway and the third goaf. The directional hole mechanism passes through a coal seam floor at a bottom of the goaf and is communicated to the second goaf and the third goaf. The directional hole includes a first directional hole and a second directional hole. The first directional hole is communicated to the second goaf, the second directional hole is communicated to the third goaf, and the first directional hole is provided with a casing structure.
    Type: Grant
    Filed: April 16, 2024
    Date of Patent: November 19, 2024
    Assignees: PING AN COAL MINING ENGINEERING TECHNOLOGY RESEARCH INSTITUTE CO., LTD, HUAINAN MINING (GROUP) CO., LTD
    Inventors: Qingfa Liao, Bing Li, Yingui Gao, Hongwei Wang, Chenglin Chang, Shaobo Yin, Lin Hu, Yanqing Li, Hao Li