| 林 青.岩溶地区土洞地基灌浆处理过程研究[J].地质与勘探,2012,48(1):1900-6-8-164 |
| 岩溶地区土洞地基灌浆处理过程研究 |
| Study on the Process of Grouting Treatment for Soil cavities in Karst areas |
| 投稿时间：2011-08-11 修订日期：2011-10-25 |
| DOI： |
| 中文关键词: 灌浆压力 理论分析 数值模拟 岩溶地区 |
| 英文关键词: grouting pressure,theoretical analysis,numerical simulation,karst area |
| 基金项目: |
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| 摘要点击次数: 1900 |
| 全文下载次数: 1529 |
| 中文摘要: |
| [摘 要] 灌浆是岩溶土洞地基处理的一种常用方法,灌浆压力对灌浆施工的有效性有着至关重要
的作用。针对岩溶地区土洞地基所处地质环境的复杂性,为了科学合理地确定其灌浆施工过程中的灌
浆压力,本文通过传统理论力学分析方法以及数值模拟方法对灌浆过程中灌浆压力变化及其引起的整
个地基应力应变场的变化进行了分析与研究,同时与施工现场监测结果进行了对比研究。研究结果表
明:在灌浆施工过程中,合理适当的灌浆压力既能确保浆液充分填充土洞,又不会破坏原土体结构;通过
对原土体抬升位移的监测,能准确预测与控制施工时的灌浆压力;理论分析与数值模拟结果和现场情况
吻合较好,为灌浆工艺施工提供了可靠的理论依据与指导。 |
| 英文摘要: |
| Abstract:Grouting is the most useful method for treating the soil cavity in Karst areas,and its pressure is a key point of grouting construction. In order to ascertain its value reasonably,conventional theoretical analysis and numerical simulation were carried out to show the changes of grouting pressure and the stress-strain field of the whole foundation which is induced by the pressure during grouting treatment for soil cavities in Karst areas with complex geological conditions. At the same time,the comparative study was performed with the monitoring results on the work site. The results show that the right and reasonable pressure can not only assure the grout to fill full the cavity but also will not destroy the original structure of the soil. The grouting pressure can be forecasted and controlled accurately by monitoring the rising displacement of soil. The theoretical analysis and numerical simulation are well in agreement with the actual situation which can provide reliable theoretical basis and guidance for the grouting construction. |
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