土工基础

›› 2016, Vol. 30 ›› Issue (4): 452-456.

• 工程实录 • 上一篇    下一篇

伞型锚在鄂北调水高膨胀土滑坡治理中的应用

龚江红1,姚登友1,任佳丽2   

  1. （1.湖北水总水利水电建设股份有限公司,武汉 430010;2.长江科学院,武汉 430010）
  • 收稿日期:2016-07-28 出版日期:2016-08-20 发布日期:2016-08-26
  • 作者简介:龚江红（1974-），男，高级工程师，研究方向为水利工程施工。
  • 基金资助:

    水利部科技推广项目《新型张拉自锁伞形锚快速加固土质边坡应用推广应用》（TG1417）

Application of Umbrella Anchors for the Mitigation of Strong Expansive Soil Landslides in a Water Transmission Project in Northern Hubei

GONG Jianghong1, YAO Dengyou1, REN Jiali2   

  1. (1.Hubei Shuizong Water Conservancy Hydropower Construction Com Ltd., Wuhan 430010;
    2.Changjiang River Scientific Research Institute, Wuhan 430010)
  • Received:2016-07-28 Online:2016-08-20 Published:2016-08-26

摘要： 以鄂北调水工程某高膨胀土滑坡为例，开展了现场探槽取样试验、室内物理力学试验及室内CT试验，揭示了滑坡主要是裂隙强度控制下的膨胀土边坡失稳。针对探槽揭示的滑动面的分布特征，论述了伞形锚技术的加固机理、加固方案、施工工艺等，通过现场监测资料可知，采用伞形锚加固后，在后期开挖及施工过程中滑坡是稳定的，从而验证了伞形锚加固方案的合理性。

关键词: 伞形锚, 膨胀土滑坡, 加固机理

Abstract: The expansive soils within a water transmission project limits were extensively studied with site test pits sampling, laboratory mechanical property testing and CT scanning of the failure planes of the samples collected from the test pits. These test results indicate that the landslide failure modes in the strong expansive soils are mainly related to the failure mode that controlled by the strength of the fissures. Based on the failure mode characterization, the feasibility of the umbrella anchor in the mitigation of the landslides in strong expansive soils, installation procedure are discussed in the paper. The construction monitoring data indicated that the mitigation was successful.

Key words: Umbrella Anchors, Landslide in Expansive Soils, Mitigations