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我矿沃溪矿区为中低温热液充填脉状矿床,倾角26°左右(局部达40°);围岩为板岩,f=4～6,不稳固.矿石为石英脉和石英细脉穿插的蚀变板岩,f=8～12,较稳固.矿石中含金、锑、钨三种元素;虽然各自的品位不高,但综合回收价值较高.地表有大量建、构筑物及河溪,不允许陷落. 该区长期以来,薄至厚矿体,均采用削壁充填法(削取底板围岩或向顶盘穿凿小井获取充填料);六十年代中期,在顶盘较稳固、脉厚在1.5米以上矿体中,采用了人工矿柱(用预制混凝土块垛砌)空场法;七十年代初开始在贫厚矿体中使用房柱法,并在富厚矿体中使用胶结充填法.
The Wuxuxi mining area is characterized by medium-low temperature hydrothermal filling vein with a dip angle of about 26 ° (locally up to 40 °), and the surrounding rock is slate with f = 4 ~ 6, which is not stable.The ore is interspersed with quartz veins and quartz veins Of altered slate, f = 8 ~ 12, more stable.The ore contains gold, antimony, tungsten three kinds of elements; although their grade is not high, but the comprehensive recovery of higher value .There are a large number of surface construction, structures and rivers , Not allowed to fall.This area has long been a thin to thick ore body, are used to cut the wall filling method (removal of the floor rock or to the top plate to obtain the filling of small wells); the mid-60s, the roof is more stable, the pulse Artificial ore columns (prefabricated concrete piles) were used in the ore bodies above 1.5 m in thickness. In the early 1970s, the column-and-pillar method was used in poor and thick ore bodies and was used in rich ore bodies Cement filling method.