| 湖南童家院锑矿床地下空洞的成因探讨 |
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| 作者单位： | Wuhan College of Geology，Wuhan 430074 |
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| 摘 要： | 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。
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| 关 键 词： | 地下空洞 锑矿床 构造应力场 湖南省 |
ON ORIGIN OF UNDERGROUND OPENINGS IN TONGJiAYUAN STIBIUM DEPOSITS, HUNAN PROVINCE |
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| Authors: | Li Hongru |
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| Abstract: | The existence of underground openings in Tongjiayuan stibium deposit has hampered the mine exploitation for a long time. Based on the research of orefield structure and characteristics of mineralization, two stages of tectonic stresses with different orientations were occurred here. Pre-mineralization, NW-SE trending compressive stress led to forming the NE trending complex anticline, reverse faults, and the space of mineralization, post-mineralization, NE-SW trending compressive stress caused the NW trending superposed folds and normal faults.The research shows that the latter tectonic stress field controlled the origin and distribution of interlayer fracture zones, transverse interlayer anticlines and underground openings. |
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| Keywords: | underground openings stibium deposits tectonic stress field Hunan province |
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