| 龙游石窟3号洞第3-2号岩柱的监测与开裂机理分析 |
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| 引用本文： | 傅燕,田世艳.龙游石窟3号洞第3-2号岩柱的监测与开裂机理分析[J].工程地质学报(英文版),2009,17(6):823-829. |
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| 作者姓名： | 傅燕 田世艳 |
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| 作者单位： | 1.浙江省龙游石窟研究所 龙游 324400 |
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| 基金项目： | 浙江省科技计划项目，国家自然科学基金项目 |
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| 摘 要： | 龙游石窟1-5号洞室群几百年来一直处于水下，1992年首次被抽干水用于开发旅游。由于抽水前后环境的强烈改变，以及洞内干湿交替明显，所以洞室围岩风化和破坏都十分严重。其中，本文所讨论的3号洞第3－2号岩柱就是已发生严重开裂，并亟待加固。为对该岩柱的加固提供科学依据，需准确把握变形破坏发展情况和据此研究它的变形破坏机理。为此，作者采用JSYCB-73系列电感式测缝仪和钢尺等手段对岩柱开裂的宽度和长度进行监测。根据监测所取得的大量数据和地质条件，对该岩柱的开裂机理进行了分析，得出了以下结论:（1）用来加固邻区的混凝土喷层的重力部分转移到该岩柱上，从而增加了荷载；（2）由于洞内渗水严重、干湿交替、温差变化较大等使风化作用加大。结果，导致该岩柱的强度降低。（3）该岩柱强度的降低和所施加荷载的增加等两个因素最终导致了岩柱被压裂。根据上述研究结论，并考虑文物保护和旅游的需要，提出了治水、地表卸荷、岩柱加锚、加箍等加固措施。加固后的监测数据表明，开裂已不再发展，岩柱已处于稳定
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| 关 键 词： | 龙游石窟〓开裂〓监测〓分析 |
MONITORING AND CRACKING MECHANISM FOR ROCK PILLAR NO.3-2 IN CAVERN NO.3 OF LONGYOU CAVERN GROUP |
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| FU Yan TIAN Shiyan.MONITORING AND CRACKING MECHANISM FOR ROCK PILLAR NO.3-2 IN CAVERN NO.3 OF LONGYOU CAVERN GROUP[J].Journal of Engineering Geology,2009,17(6):823-829. |
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| Authors: | FU Yan TIAN Shiyan |
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| Institution: | 1.Institute of Longyou Grottoes, Zhejiang province, Longyou3244002.College of Soil and Water Conservation of Beijing Forestry University, Key Lab. of Soil and Water |Consrevation and Desertification combating, Minstery of Education, Beijing,100083 |
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| Abstract: | The caverns No. 1 to No. 5 of Longyou cavern group had been fully filled with water for many hundreds years. In 1992,the water was pumped out d for tourism. Because of the dramtic changes of the condition and the alternation bettween drying and wetting,the rock mass weathering and the damages have been substantial. Such as,the rock pillar No. 3-2 of the cavern No. 3 has developed many cracks. This pillar has to be reinforced immediately. To provide the basis for the pillar reinforcement,it is needed to full... |
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| Keywords: | Longyou caverns Crack Monitor Rock pillar Environment |
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