一、概述随着水砂充填和胶结充填工艺的不断完善以及无轨自行设备的迅速推广,分层充填法已进入高效率采矿方法的行列,其应用范围日益扩大。以金属矿山为例,分层充填法的比重,加拿大1957年为12%,到1967年便达45%;日本1951年为10%,1958年为25%,1970年增加到39%;瑞典有色金属矿山采用这一方法的比重,1959年为31%,1971年 I. Overview With the constant improvement of water sand filling and cementation filling technologies and the rapid popularization of trackless self-equipment, the stratified filling method has entered the ranks of high-efficiency mining methods and its application scope is expanding day by day. In the case of metal mines, the proportion of stratified filling method was 12% in Canada in 1957 and 45% in 1967; Japan was 10% in 1951, 25% in 1958 and 39% in 1970; The proportion of metal mines using this method was 31% in 1959 and 1971