O2 adding process for weak pressure-bearing deposit CO2+O2 in-situ leaching uranium mining process

The invention belongs to a processing technology, and particularly relates to an O2 adding technology of a weak pressure-bearing ore deposit CO2 + O2 in-situ leaching uranium mining technology. The method comprises the following steps: 1, starting a mining area pumping and injecting cycle, and checking whether a pumping and injecting system runs stably; and 2, under the condition allowed by the system, replenishing clean water into the liquid preparation tank to the maximum extent. Thirdly, liquid injection of each unit in the mining area is adjusted, injection of the unit in the middle area of the mining area is kept larger than pumping until each injection hole is full, a water sample can be obtained through an orifice well pipe sampling valve, and the injection holes of the peripheral units are closed according to the situation. Fourthly, the injection operation in the middle area of the mining area is maintained to be larger than the pumping operation, the absolute water column height in the injection hol