• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Proceedings of the Institutuion Civil Engineers >Modelling and acoustic monitoring of grout propagation in sands
【24h】

Modelling and acoustic monitoring of grout propagation in sands

机译：砂浆中砂浆传播的建模和声学监测

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Grouting is generally used for ground reinforcement or for reducing soil permeability. However, choosing grouting parameters or predicting improvements is at present rather empirical. A numerical approach may therefore enable grouting to be more efficient. The purpose of this paper is to model the evolution, in time and space, of two major variables: grout concentration and fluid pressure in grouted soil. After a brief description of a first tried diffusive model, this study aims to describe the performance of a software program, Athos. This program was initially developed for the oil industry and uses a piston model. Results are given in one- and three-dimensional approaches. They underline a rapid evolution of concentration from grout-saturated zones to non-saturated zones. The evolution of pressure depending on this degree of saturation is also highlighted. The second part of the paper compares the numerical model with a series of experiments carried out on grouted sand columns and in saturated sand tanks. In the latter tests, the grout is injected into the sand using a sleeved grout pipe, and the progress of grout propagation in the soil is monitored by acoustic emission (AE). This comparison shows the validity of the chosen model. The permeation distance detected by AE is compared with that predicted by simple grout propagation models.
机译：灌浆通常用于地面加固或降低土壤渗透性。但是，选择灌浆参数或预测改进目前是相当经验的。因此，数值方法可以使灌浆更加有效。本文的目的是模拟两个主要变量在时间和空间上的演变：灌浆浓度和灌浆土壤中的流体压力。在简要介绍了第一个尝试的扩散模型之后，本研究旨在描述软件程序Athos的性能。该程序最初是为石油工业开发的，并使用活塞模型。结果以一维和三维方法给出。他们强调了浓度从灌浆饱和区到非饱和区的快速演变。还强调了取决于此饱和度的压力变化。本文的第二部分将数值模型与在灌浆砂柱和饱和砂罐中进行的一系列实验进行了比较。在后面的测试中，使用带套管的灌浆管将灌浆注入沙中，并通过声发射（AE）监控灌浆在土壤中的传播进程。这种比较显示了所选模型的有效性。将AE检测到的渗透距离与简单灌浆传播模型预测的渗透距离进行比较。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号