摘要
对于黄金矿山,由于地质构造成矿,所采矿体基本都属于破碎矿体,部分矿体属于极破碎矿体,施工中经常发生塌方,安全隐患大,采场损失贫化率较高。而下向采矿技术的发展,为极破碎矿体的安全高效开采提供了途径。采用人工假底,改混凝土假底为高配比灰砂比1:4充填胶结体假底,减少了塌方风险,提高了安全性,同时降低了采场的两率指标。
For the gold mines,the orebody is almost broken because of the geological tectonic and its mineralization,part of them are most broken orebody.The collapse happens frequently in construction,and the potential safety hazard and the dilution and loss rate are high.The development of downward mining technique provides the safe and efficient method for broken orebody mining.The artificial bottom was used and high cement-sand ratio（1：4） filling cement replaced concrete as the bottom.It reduced the collapse risk,promoted the safety,and the dilution and loss rate reduced.
出处
《中国矿山工程》
2016年第5期35-37,共3页
China Mine Engineering
关键词
极破碎矿体
下向采矿技术
人工充填假底
extremely broken orebody
downward mining technique
artificial false bottom
