| 澜沧铅矿凝灰岩膨胀性微观分析研究 |
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| 引用本文： | 蒋志明,马洪杰,田保同,蒋绍平.澜沧铅矿凝灰岩膨胀性微观分析研究[J].路基工程,2013,0(2):83-85. |
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| 作者姓名： | 蒋志明 马洪杰 田保同 蒋绍平 |
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| 作者单位： | 1.1长沙理工大学土木与建筑学院，长沙 410114 |
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| 摘 要： | 凝灰岩属于膨胀岩中的一种，它具有很强的膨胀崩解性。以云南澜沧铅矿的凝灰岩为例，通过微观分析，研究了解澜沧铅矿的凝灰岩主要矿物成分和矿物的微观晶体变化。研究结果表明，澜沧铅矿凝灰岩中导致膨胀的主要粘土矿物是蒙脱石，且含有不膨胀的粘土矿物绿泥石，不含有高岭石和伊利石。凝灰岩膨胀的根本原因是蒙脱石晶体的晶面间距变大产生的。
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| 关 键 词： | 凝灰岩 膨胀性 蒙脱石晶体 膨胀机理 晶面间距变大 |
| 收稿时间： | 2019-11-10 |
Study on Swelling Property of Tuff in Lancang Lead Ore by Micro-analysis |
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| Authors: | JIANG Zhiming MA Hongjie TIAN Baotong JIANG Shaoping |
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| Affiliation: | 1. Changsha University of Science＆Technology, Changsha, 410114, China; 2. Lanchang Lead Ore of Yunnan Chihong Zinc ＆ Germanium Co. , Ltd. , Lancang 665601, Yunnan, China) |
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| Abstract: | Tuff is a kind of swelling rock being of swell and collapse. Taking the tuff in Lancang Lead Ore in Yunnan as the example, the main mineral composition and its micro crystal change of the tuff are studied by micro-analysis. The result shows that in the tuff therein, the main clay mineral leading to swell is montmorillonite, and kaolinite and ledikite are not contained but a non-swelling clay mineral, chlorite, is contained. The basic reason of tuff swelling is increased interplanar distance of montmorillonite crystal. |
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| Keywords: | tuff swelling property montmorillonite crystal increased interplanar swelling mechanism increased interplanar distance |
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