...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bulletin of engineering geology and the environment >Discussion of the paper by I. Sass and U. Burbaum entitled 'A method for assessing adhesion of clays to tunneling machines'
【24h】

Discussion of the paper by I. Sass and U. Burbaum entitled 'A method for assessing adhesion of clays to tunneling machines'

机译：I. Sass和U. Burbaum对论文的讨论，题为“一种评估粘土对隧道掘进机附着力的方法”

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

The writers (Atkinson et al. 2003) investigated a case in which a full-face machine, tunnelling through a weathered Mesozoic mudstone, became clogged with high plasticity clay similar to that shown in the authors' Fig. 1. We showed that the action of the machine destructured aggregated clay platelets of the mudstone and released the high plasticity clay that originally had been strongly bonded into silt-sized aggregations. The clay typically had some 70% of total clay content of mixed illite, smectite and chlorite clay mineral species. It clogged all parts of the machine including the cutting head and the screw conveyor. We showed that the mudstone destructured and released clay only when worked at a water content close to the plastic limit. The drive had to be completed satisfactorily with compressed air which maintained the water content below the critical value. We recommended that prior to tunnelling, samples of the ground taken from the tunnel elevation should be subjected to tests that represented the actions of the tunnelling machine and for this we used a commercial meat mincer.
机译：作者（Atkinson等人，2003年）调查了一个案例，其中掘进机穿过风化的中生代泥岩，被高塑性粘土堵塞，类似于作者的图1所示。我们证明了这种作用机器对泥岩的聚集的粘土薄片进行了解构，并释放了高塑性粘土，该粘土最初已牢固地粘结成粉粒大小的聚集体。粘土通常具有混合伊利石，绿土和绿泥石粘土矿物种类的总粘土含量的约70％。它堵塞了机器的所有部件，包括切割头和螺旋输送机。我们表明，只有当水含量接近塑性极限时，泥岩才能使粘土变形并释放粘土。必须用压缩空气令人满意地完成驱动，压缩空气应将水含量保持在临界值以下。我们建议在进行隧道作业之前，应对从隧道标高中获取的地面样本进行测试，以代表隧道掘进机的作用，为此，我们使用了商用绞肉机。

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