生石灰为掺料的土遗址锚固浆液选型和性能研究

doi:10.16285/j.rsm.2018.0337

岩土力学 ›› 2019, Vol. 40 ›› Issue (6): 2183-2191.doi: 10.16285/j.rsm.2018.0337

生石灰为掺料的土遗址锚固浆液选型和性能研究

崔凯^{1, 2}，黄井镜¹，谌文武²，王东华¹，韩宁²

1. 兰州理工大学甘肃省土木工程防灾减灾重点实验室，甘肃兰州 730050； 2. 兰州大学西部灾害与环境力学教育部重点实验室，甘肃兰州 730000

收稿日期:2018-06-26 出版日期:2019-06-11 发布日期:2019-06-22
通讯作者: 黄井镜，男，1988年生，硕士研究生，主要从事岩土工程方面的研究工作。E-mail: 595128278@qq.com E-mail:65226683@qq.com
作者简介:崔凯，男，1980年生，博士，副教授，博士生导师，主要从事西北地区岩土劣化等方面的教学和科研工作。
基金资助:
国家自然科学基金（No.41562015）；国家“十二五”科技支撑计划项目（No.2014BAK16B02）；教育部长江学者创新团队支持计划项目（No.2013IRT13068）。

Research on selection of anchor slurry and performance of mixed quick lime in earthen sites

CUI Kai^{1, 2}, HUANG Jing-jing¹, CHEN Wen-wu², WANG Dong-hua¹, HAN Ning²

1. Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou, Gansu 730050, China; 2. Key Laboratory of Mechanics on Disaster and Environment in Western China of Ministry of Education, Lanzhou University, Lanzhou, Gansu 730000, China

Received:2018-06-26 Online:2019-06-11 Published:2019-06-22
Supported by:
This work was supported by the National Natural Science Foundation of China (41562015), the National Science and Technology Pillar Program during the 12th Five-Year Plan Period of China(2014BAK16B02) and the Program for Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China(2013IRT13068).

摘要/Abstract

摘要： 锚固浆液的兼容性不理想、类型发展的滞后性成为制约土遗址锚固技术发展的关键问题。为了丰富锚固浆液类型和提高其兼容性，研究以传统材料生石灰为掺料，通过其与质量浓度为1.5%的SH黏结剂、黏土和粉煤灰拌和组成的SH-（CaO+C+F）锚固浆液进行流动性测试以及结石体进行物理、力学特性测试，确定了水灰比为0.5的浆液作为优选浆液。并以该型锚固浆液与2种不同材质的锚杆，在3种长度为变量的条件下组成的6种锚固系统开展原位试验。原位试验以获取6种锚固系统的破坏模式、极限荷载与极限荷载?位移特征以及锚固段应力沿锚固深度分布特征为目的，并对其进行分析与讨论。最后，通过对锚固力学机制的分析，对比并评价了该型锚固浆液的兼容性和锚固性能。该研究结果为土遗址锚固浆液的多样性选择提供了参考。

关键词: 土遗址, 生石灰, 流动性, 兼容性, 锚固性能

Abstract: The incompatibility and the lag of type development of anchorage slurry have become the key problems restricting the development of anchorage technology in earthen sites. To improve the compatibility and enrich the types of anchorage slurry, the fluidity of SH-(CaO+C+F) anchorage slurry composed of traditional quicklime, clay and fly ash was tested, so did the physical and mechanical properties of stones. During the tests, the mass concentration of SH binder was 1.5%. Then, the anchorage slurry with water cement ratio of 0.5 was selected as the preferred slurry. Based on this, the in-situ anchorage test was performed in which six different kinds of anchorage systems composed of the selected slurry and two different kinds of anchorage bolts were tested at three variable lengths. The in-situ test aimed to obtain and analyze the failure modes, ultimate load and ultimate load-displacement characteristics and the distribution characteristics of stress along anchorage depth of six kinds of anchorage systems. Finally, compatibility and anchorage performance of this type of anchorage slurry were compared and evaluated through analysis of anchorage mechanics mechanism. The research results provided a reference for the selection of anchorage slurry diversity of earthen sites.

Key words: earthen sites, quick lime, workability, compatibility, anchorage performance

中图分类号:

TU411.2

崔凯, 黄井镜, 谌文武, 王东华, 韩宁, . 生石灰为掺料的土遗址锚固浆液选型和性能研究[J]. 岩土力学, 2019, 40(6): 2183-2191.

CUI Kai, HUANG Jing-jing, CHEN Wen-wu, WANG Dong-hua, HAN Ning, . Research on selection of anchor slurry and performance of mixed quick lime in earthen sites[J]. Rock and Soil Mechanics, 2019, 40(6): 2183-2191.

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生石灰为掺料的土遗址锚固浆液选型和性能研究

Research on selection of anchor slurry and performance of mixed quick lime in earthen sites

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