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隧道建设(中英文) ›› 2021, Vol. 41 ›› Issue (4): 554-560.DOI: 10.3973/j.issn.2096-4498.2021.04.004

• 研究与探索 • 上一篇    下一篇

盾构新型轻质浆液配合比研究及应用

杨宏波1, 曹耀东2, 崔学军1, *, 李应川2, 谢鸿辉1, 周伟3, 商宁宁3   

  1. 1. 中广核工程有限公司, 广东 深圳 518124 2. 中国水利水电第十四工程局有限公司,  云南 昆明 650200 3. 中国石油集团工程技术研究有限公司, 天津 300450
  • 出版日期:2021-04-20 发布日期:2021-04-30
  • 作者简介:杨宏波(1967—),男,湖北洪湖人,1991年毕业于武汉城市建设学院,工业与民用建筑专业,本科,高级工程师,现从事核电建设施工管理工作。E-mail: yanghongbo@cgnpc.com.cn。 *通信作者: 崔学军, E-mail: cuixuejun@cgnpc.com.cn。

Applications of Mix Ratio of New Lightweight Slurry for Shield Grouting

YANG Hongbo1, CAO Yaodong2, CUI Xuejun1, *, LI Yingchuan2, XIE Honghui1, ZHOU Wei3, SHANG Ningning3   

  1. 1. China Nuclear Power Engineering Co., Ltd., Shenzhen 518124, Guangdong, China; 2. Sinohydro Bureau14 Co., Ltd., Kunming 650200, Yunnan, China; 3. China National Petroleum Corporation Engineering Technology Research Co., Ltd., Tianjin 300450, China
  • Online:2021-04-20 Published:2021-04-30

摘要: 为抑制盾构在富水硬岩段施工过程中的管片上浮,研制一种二次注浆用的新型轻质浆液。该浆液悬浮于管片上方,能快速凝固,可达到抑制管片上浮的目的。通过对比筛选,确定以憎水膨胀珍珠岩、高贝利特硫铝酸盐水泥、絮凝剂UWB-Ⅱ、UWB-Ⅲ和聚羧酸减水剂BSH-200等作为新型轻质浆液试验原材料。用正交试验方法研究各因素对容重、抗压强度、抗分散性等浆液性能的影响,优选配合比,同时进行现场试验验证,结果表明,该轻质浆液对管片上浮有明显的抑制作用。

关键词: 盾构注浆, 轻质浆液, 配合比, 正交试验

Abstract: A new type of lightweight slurry for secondary shield grouting is developed to inhibit the floating of shield segments during tunneling in waterrich hardrock sections. The slurry is suspended above the segment, and it can rapidly solidify. According to comparison and selection, the hydrophobic expanded perlite, high belite sulfur aluminate cement, flocculant UWB and UWB , and polycarboxylic superplasticizer BSH200 can be employed as test raw materials. The effect of various factors on the properties of the slurry, including bulk density, compressive strength, and dispersion resistance, is investigated using the orthogonal test method. Finally, the optimal mix ratio for the slurry is obtained and verified via field test. The results show that the lightweight slurry has an inhibiting effect on the floating of segments.

Key words: shield grouting, lightweight slurry, mix ratio, orthogonal test

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