The application provides a deep seam mining method and
system in a submerged environment. A large-
diameter shaft is drilled to a target seam and cemented, the
wellhead is sealed and pressurized, and water is injected into the
wellbore to create a submerged environment. Then, an
underwater mining
robot is used to crush the ore in situ in the submerged environment and simultaneously implement roof support as needed. A water-gas mixed lifting
system is used to lift the ore to the ground, and the resource is finely classified and purified. By creating a submerged environment, the static pressure of water can balance part of the
ground pressure, reducing the
impact of stress changes on rock stability, reducing safety accidents such as harmful gas outburst, and reducing
tool wear by providing sufficient
water supply for high-pressure
water jet rock breaking operations. At the same time, the "submerged environment in-situ crushing-pipeline transportation-ground separation"
integrated technology reduces the cost of building a well, making it easier to achieve
automation and
intelligent control for continuous mining and reduce operating costs.