湖南崀山丹霞地貌岩体抗酸侵蚀脆弱性的实验研究

doi:10.11867/j.issn.1001-8166.2011.09.0965

地球科学进展

2011, Vol. 26

Issue (9): 965-970 DOI: 10.11867/j.issn.1001-8166.2011.09.0965

研究论文

湖南崀山丹霞地貌岩体抗酸侵蚀脆弱性的实验研究

欧阳杰¹，朱诚²，彭华^3*，胡智农⁴，俞锦标²，王海昀⁵，吕文²，徐龙生²

1.广东广播电视大学,广东理工职业学院，广东广州 510091;
2.南京大学地理与海洋科学学院，江苏南京 210093;
3.中山大学地理科学与规划学院，广东广州 510275;
4.南京水利科学研究院，江苏南京 210029;
5.湖南崀山国家地质公园管理处，湖南新宁 422700

Experimental Research on Vulnerability of Danxia Rocks to Resistance against Acid Erosion in Langshan, Hunan Province

Ouyang Jie¹, Zhu Cheng², Peng Hua³, Hu Zhinong⁴, Yu Jinbiao², Wang Haiyun⁵, Lü Wen², Xu Longsheng²

1.Guangdong Polytechnic Institute, Radio and TV University of Guangdong, Guangzhou 510091, China;
2.School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093, China;
3.School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275, China;
4.Academe of Water Science of Nanjing, Nanjing 210029, China;
5.Bureau of National Geological Park of Langshan，Xinning 422700, China

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摘要：

湖南崀山拥有独特的丹霞喀斯特现象，但具有溶蚀力的水对丹霞地貌区重要的物质基础砂岩和砾岩的侵蚀还没有进行过深入的实验研究。以此为切入点，通过实地采样获得41块砂岩、砾岩岩芯，选择其中18块岩芯平均分成3组，分别放入2%、5%、10% 3种不同浓度的H₂SO₄溶液中浸泡并连续12天定时观测、记录，最后把未破碎的3块砾岩岩芯进行单轴抗压实验，其抗压强度在9.6～13.7 MPa之间，仅为这些岩体干抗压强度的1/10左右。通过4处采样地的实验数据对比还发现，崀山砾岩抗酸侵蚀后的抗压强度是最低的，如果遭到同样外力的破坏，崀山丹霞岩体更容易破损倒塌。以上岩芯抗酸侵蚀的脆弱性和岩芯的物质组成、结构等有关。在宏观实验观测的基础上，初步微观半定量分析解释了丹霞地貌区砂岩和砾岩抗酸侵蚀脆弱性的一般特点，为今后更加合理地保护崀山丹霞地貌提供依据。

关键词： 丹霞地貌; 世界自然遗产地; 湖南崀山; 抗酸实验

Abstract:

The unique phenomenon of Karst in Danxia Landforms may be observed in Langshan, Hunan Province, but there are rare deep exploration about acid erosion to sandstones and conglomerates which are important material foundation in Danxia Landform areas. Base on this point, 41 cores of sandstones and conglomerates were collected from Langshan, 18 cores were selected from them and put into sulfuric acid solutions with three different contents of 2%, 5%, 10%, observed, and recorded continuously for 12 days. Three cores which were not collapsed were undone uniaxial against pressure test at last. The strengths of against pressure of conglomerates declined dramatically after acid erosion, the values to against pressure remained 1/10 only to these rocks in the dry condition. Also the strengths of the 3 cores to uniaxial against pressure after acid erosion were the lowest in the four sampling sites by analyzing experimental data, so the Danxia rocks in Langshan are easy to collapse and destroy under the same external forces. The reasons of vulnerability to against acid erosion of rocks in Danxia landform are relevant closely to components and structures of those cores by identifications under a polarizing microscope to flakes. Based on macroscopic experimental observations, general characteristics of against acid erosion vulnerability of sandstones and conglomerates in Danxia Landform areas were micro semi-quantitative analyzed and explained. It is valuable to provide basis for protecting the world natural heritage site and get a sustainable utilization for mankind in the future.

Key words: Langshan of Hunan province Danxia landform Acid-resistance experiment World natural heritage site

收稿日期: 2011-03-21 出版日期: 2011-09-10

P931

基金资助:

国家自然科学基金项目“丹霞地貌发育的外动力机制研究”（编号：40871014）资助.

通讯作者: 彭华（1956-），男，安徽砀山人，教授，博士生导师.主要从事旅游地理、旅游规划、城市旅游、城市与区域发展战略研究. E-mail: eesph@mail.sysu.edu.cn

作者简介: 欧阳杰（1969-），男，安徽蚌埠人，讲师，主要从事丹霞地貌、旅游景区管理等研究. E-mail:oyang692000@yahoo.com.cn

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引用本文:

欧阳杰，朱诚，彭华，胡智农，俞锦标，王海昀，吕文，徐龙生. 湖南崀山丹霞地貌岩体抗酸侵蚀脆弱性的实验研究[J]. 地球科学进展, 2011, 26(9): 965-970.

Ouyang Jie, Zhu Cheng, Peng Hua, Hu Zhinong, Yu Jinbiao, Wang Haiyu,et al. Experimental Research on Vulnerability of Danxia Rocks to Resistance against Acid Erosion in Langshan, Hunan Province. Advances in Earth Science, 2011, 26(9): 965-970.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2011.09.0965 或 http://www.adearth.ac.cn/CN/Y2011/V26/I9/965

[1] Peng Hua. Danxia geomorphology of China: A review[J]. Chinese Science Bulletin, 2001, 46 (Suppl.I): 38-44.
[2] Ouyang Jie, Zhu Cheng, Peng Hua, et al. Types and spatial combinations of Danxia landform of Fangyan in Zhejiang province[J]. Journal of Geographic Sciences, 2009, 19(5)：631-640.
[3] McCabe S, Smith B J, Warke P A. Sandstone response to salt weathering following simulated fire damage: A comparison of furnace heating and fire[J]. Earth Surface Processes and Landforms, 2007, 32(12): 1 874-1 883.
[4] Ouyang Jie. Contrast study geomorphologic types of world natural heritage sites of "China Danxia"[J].Tourism Today, 2009, 5:81-85.[欧阳杰. “中国丹霞”世界自然遗产地丹霞地貌类型的对比研究[J].当代旅游, 2010,5:81-85.]
[5] Zhu Cheng, Peng Hua, Ouyang Jie, et al. Rock resistance and the development of horizontal grooves on Danxia slopes[J]. Geomorphology, 2010, 123(1/2):84-96.
[6] Ministry of Water Resources of the People′s Republic of China. Testing Procedures of Water Conservancy and Hydropower Engineering to Rock Experiments[M]. Beijing: The Publishing House of Water Conservancy and Hydropower Engineering, 2001.[中华人民共和国水利部.水利水电工程岩石试验规程 [M]. 北京：中国水利水电出版社, 2001.]

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