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某锡矿产状复杂,厚度倾斜及走向皆不稳定,也极不规则,矿体厚度由几公寸至几十公尺。其中又以厚矿体(3～15公尺)最多占64%,极厚矿体(大于15公尺)占27%,矿体倾斜度从水平至急倾斜,其中又以急倾斜(大于45°)最多占46%,倾斜矿体(25～45°)次之占40%。矿石松软而极不稳固主要是由氧化较深的土状或块状褐铁矿与赤铁矿等组成,围岩矿化现象很深,且受断层及裂隙影响而较破碎,更由于数百年来资本家的掠夺式的开采,只采不充填。因此采矿方法
A tin ore complex, the thickness of the tilt and trend are unstable, but also very irregular, ore thickness from a few inches to tens of meters. Among them, the orebody accounts for 64% of the maximum with thick ore bodies (3 ~ 15 meters) and 27% of the extremely thick ore bodies (more than 15 meters). The ore body inclination changes from horizontal to steep, ) Accounted for a maximum of 46%, inclined ore body (25 ~ 45 °) followed by 40%. The soft and extremely unstable ore is mainly composed of deep-oxidized earth-like or massive limonite and hematite. The mineralization of surrounding rock is very deep and is more fragmented due to the influence of faults and fissures. The predatory exploitation of capitalists over the years has only taken place without filling. So mining methods