The paper introduced the successful application of high bench caving method of using deep hole roller rock bit into the practice of solving the complex goaf area,a stuff problem of this kind.

• 采用深孔牙轮钻机、利用高台阶崩落法成功地处理了复合采空区,解决了复合采空区处理难的问题,使技术人员在熟练浅采、深采空区处理的情况下,又探索出复合采空区的处理方法。