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| 蒙脱石层间水化状态对土壤孔隙率计算的修正及其在地面沉降中的应用 | |
| 引用本文： | 杨献忠,杨祝良,陈敬中,胡存礼,袁平,魏乃颐.蒙脱石层间水化状态对土壤孔隙率计算的修正及其在地面沉降中的应用[J].矿物学报,2006,26(1):15-21. |
| 作者姓名： | 杨献忠 杨祝良 陈敬中 胡存礼 袁平 魏乃颐 |
| 作者单位： | 1. 中国地质大学(武汉)湖北,武汉,430074;南京地质矿产研究所,江苏,南京,210016 2. 南京地质矿产研究所,江苏,南京,210016 3. 中国地质大学(武汉)湖北,武汉,430074 |
| 基金项目： | 中国地质调查局项目(编号:200313000037)，中国地质调查局与南京市人民政府合作项目(编号:1212010511105) |
| 摘 要： | 用蒙脱石层间水化状态修正了土壤孔隙率的计算方程,以此建立蒙脱石层间脱水作用所产生的次要地面沉降量的数学表达式,并对无锡石塘湾地面沉降区进行了模拟计算。无锡石塘湾地区因蒙脱石层间释水所产生的次要地面沉降量为39.02 cm,占整个沉降量的19.51%,人工回灌后,次要地面沉降量变为36.04 cm,占整个沉降量的18.02%,表明人工回灌是阻止地面继续沉降的有效措施之一。计算表明,如果蒙脱石残余层间水全部释出,那么无锡石塘湾地区可能有117.39 cm的地面沉降空间。虽然这一结果在真实的外界环境下不可能实现,但对下一步就地面沉降灾害的治理、防治具有一定的警示作用。蒙脱石层间脱水作用及其对地面沉降影响的研究,可能对地面沉降趋势的预测具有启示作用。 |
| 关 键 词： | 蒙脱石 层间水 水化状态 土壤孔隙率 地面沉降 |
| 文章编号： | 1000-4734（2006）01-0015-07 |
| 收稿时间： | 2005-08-19 |
| 修稿时间： | 2005年8月19日 |
SOIL POROSITY CORRECTED BY THE HYDROUS STATES OF MONTMORILLONITE INTERLAYER WATER AND ITS APPLICATION IN LAND SUBSIDENCE |
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| YANG Xian-zhong,YANG Zhu-liang,CHEN Jing-zhong,HU Cun-li,YUAN Ping,WEI Nai-yi.SOIL POROSITY CORRECTED BY THE HYDROUS STATES OF MONTMORILLONITE INTERLAYER WATER AND ITS APPLICATION IN LAND SUBSIDENCE[J].Acta Mineralogica Sinica,2006,26(1):15-21. | |
| Authors: | YANG Xian-zhong YANG Zhu-liang CHEN Jing-zhong HU Cun-li YUAN Ping WEI Nai-yi |
| Institution: | 1. China University of Geosciences,Wuhan 430074,China;2.Nanjing Institute of Geology and mineral Resources,Nanjing 210016,China |
| Abstract: | This paper corrected the calculation equation of soil porosity by means of the hydrous states of montmorillonite interlayer water,then the mathematic expression was set up to calculate the amount of secondary land subsidence resultant from montmorillonite interlayer dehydration.The model was applied to the Shitangwan land subsidence area,Wuxi City.The calculation results show that the amount of secondary land subsidence resultant from part interlayer water release of montmorillonite is 39.02 cm after groundwater exploitation,accounting for 19.51% of the total cumulative amount of land subsidence,and is 36.04 cm after artificial injection,accounting for 18.02% of the total cumulative amount of land subsidence in the area.It is shown that artificial injection is one of the effective measures to prevent land subsidence from going on.It is also indicated that,if the remainder interlayer water in montmorillonite is wholly released,there would be 117.39 cm of land subsidence in the area in the future.Although it would be impossible to come to the result in the real geological condition,this would give us a caution to the prevention and assessment of land subsidence hazard.The research on montmorillonite dehydration and its effect on land subsidence would also show us a revelation to the prediction of land subsidence trend. |
| Keywords: | montmorillonite interlayer water hydrous state soil porosity land subsidence |
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