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童家院锑矿床广泛发育地下空洞,影响矿山开采。本文根据矿田构造和矿化特征研究,认为本区至少经受过两期构造应力作用。成矿前,在左旋水平扭动作用下,形成NE向锡矿山复式背斜、纵向逆断层和矿化空洞,成矿后,在NE向挤压应力下,产生了NW向叠加褶皱以及正断层。同时,该应力场所控制的层间破碎带和背斜,大大影响了地下空洞的成生和分布。
Tongji antimony deposits widely developed underground cavities, affecting the mining. Based on the study of ore-field structure and mineralization, this paper argues that the area has undergone at least two periods of tectonic stress. Before metallogenesis, under the action of left-lateral twist, the NE-tin mines double anticline, vertical reverse faults and mineralized voids were formed. After the mineralization, NW superimposed folds and normal faults . At the same time, the strata and anticlines controlled by the stress field have greatly affected the formation and distribution of underground voids.