In order to ensure the safe production of the working face and avoid geological disasters when the working face close to the wellbore, Sanyuan Guhan Jingbao Coal Industry Co., Ltd., was taken as an example, the residual equipment was discussed for the problem of wellbore not used after coal mine merger and integration. The evacuation route and the transportation route were designed. The layered grouting technology for shutting down the wellbore was studied. The wellbore treatment structure was designed as the bottom hole, the roadway, the main body of the wellbore, and the upper four layers of the wellbore. Grouting and filling grouting were introduced. Practice showed that this method not only ensured the safe production of the mine, but also liberated part of the coal resources.