It combines the advantages of both shrinkage and filling methods, and possesses the simplicity of itstechniques, convenience for its use and safety on its site operation.

• 该方法吸取了留矿法和充填法的优点，工艺简单、易于掌握、作业安全，适于开采围岩不稳固的急倾斜薄矿脉；