Mining method of settled strip coal pillars

The invention discloses a mining method of settled strip coal pillars. A mode of firstly mining and filling the middles of the settled strip coal pillars and then mining two sides is adopted. The concrete steps are divided into four steps, so as to achieve the target of recovering all the coal pillars. The mining method is simple and feasible to implement; the settled protective coal pillars after strip mining are completely recovered; the recovery rate of resources is improved. By adopting the mining method, the stability of an overlying rock can be ensured; meanwhile, the recovery rate of the resources is improved. Compared with the prior art, a lot of idle coal resources are liberated; the length of service of a mine is prolonged; the situation of short supply of the coal resources is also relieved.