基于FAST-1新型高强快速锚固剂的筋-浆-岩黏结性试验

doi:10.13278/j.cnki.jjuese.20200275

吉林大学学报(地球科学版) ›› 2021, Vol. 51 ›› Issue (5): 1570-1577.doi: 10.13278/j.cnki.jjuese.20200275

基于FAST-1新型高强快速锚固剂的筋-浆-岩黏结性试验

刘泉维¹, 黄成¹, 刘林胜¹, 叶守杰¹, 臧国强², 高文龙³, 张瑾⁴

1. 青岛市地铁六号线有限公司, 山东青岛 266100;
2. 山东旭瑞环境岩土工程勘察设计有限公司, 山东青岛 266100;
3. 上海勘察设计研究院(集团)有限公司青岛分公司, 山东青岛 266100;
4. 青岛理工大学土木工程学院, 山东青岛 266033

收稿日期:2020-11-26 出版日期:2021-09-26 发布日期:2021-09-29
通讯作者: 高文龙(1992-),男,硕士,主要从事工程地质方面的研究,E-mail:919763892@qq.com E-mail:919763892@qq.com
作者简介:刘泉维(1977-),男,博士,主要从事城市地铁规划建设与安全质量管理方面的研究,E-mail:59134856@qq.com
基金资助:
国家自然科学基金青年基金项目（41702320）

Reinforcement-Mud-Rock Bonding Test Based on FAST-1 New High Strength Anchoring Agent

Liu Quanwei¹, Huang Cheng¹, Liu Linsheng¹, Ye Shoujie¹, Zang Guoqiang², Gao Wenlong³, Zhang Jin⁴

1. Qingdao Metro Line 6 Co. Ltd., Qingdao 266100, Shandong, China;
2. Shandong Xurui Environmental Geotechnical Engineering Investigation and Design Co. Ltd., Qingdao 266100, Shandong, China;
3. Qingdao Branch, SGIDI Engineering Consulting(Group) Co. Ltd., Qingdao 266100, Shandong, China;
4. School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, Shandong, China

Received:2020-11-26 Online:2021-09-26 Published:2021-09-29
Supported by:
Supported by the Youth Fund of National Natural Science Foundation of China (41702320)

摘要/Abstract

摘要： 为了研究FAST-1新型高强快速锚固剂的锚固性能及最佳锚固长度，通过连续荷载作用下的极限拉拔试验，从多个方面研究了基于FAST-1新型锚固剂的筋-浆-岩体系的黏结性能。研究发现：该新型锚固剂具有早期强度高的特点，24 h即可达到设计强度；其水料比在一定范围内（0.22~0.31）会影响拉拔过程中锚固结构的破坏模式，水料比越小，黏结强度越大，但流动性也越差；锚固剂对岩层的黏结性能大于锚索，增加锚索与浆液固结体的接触面积可有效提高锚固性能。笔者选用拟合效果较好的连续曲线模型求取相对滑移，有效反映不同界面的黏结性能；优选有效的筋-浆长度计算方法，得出锚固长度与锚体长度相关，建议锚固长度取值10.0d~15.0d（d为锚索直径）。

关键词: 锚固剂, 黏结强度, 黏结位移, 锚固长度

Abstract: In order to study the anchoring performance and optimal anchoring length of the FAST-1 new high strength anchoring agent, the bonding performance of the reinforced slurry rock system based on the FAST-1 new high strength anchoring agent was studied from many aspects through the ultimate pull-out test under continuous load. The continuous curve model with good fitting effect was selected to calculate the relative slip, which can effectively reflect the bonding properties of different interfaces, and the effective calculation method of reinforcement slurry length was optimized. It is found that when the water material ratio is in a certain range (0.22-0.31), and it affectes the failure mode of the anchor structure in the drawing process. The smaller the water material ratio, the greater the bond strength, but the worse the fluidity; The bonding performance of the anchoring agent to the rock stratum is greater than that of the anchor cable; Increasing the contact area between the anchor cable and the slurry consolidation body can effectively improve the anchoring performance. It is concluded that the new anchoring agent has the characteristics of high early strength, and the design strength can be reached with 24 h; The anchorage length is related to the length of the anchor body. It is suggested that the anchorage length is 10.0d-15.0d(d is the diameter of the anchor cable).

Key words: anchoring agent, bonding strength, bonding displacement, anchorage length

中图分类号:

U455

刘泉维, 黄成, 刘林胜, 叶守杰, 臧国强, 高文龙, 张瑾. 基于FAST-1新型高强快速锚固剂的筋-浆-岩黏结性试验[J]. 吉林大学学报(地球科学版), 2021, 51(5): 1570-1577.

Liu Quanwei, Huang Cheng, Liu Linsheng, Ye Shoujie, Zang Guoqiang, Gao Wenlong, Zhang Jin. Reinforcement-Mud-Rock Bonding Test Based on FAST-1 New High Strength Anchoring Agent[J]. Journal of Jilin University(Earth Science Edition), 2021, 51(5): 1570-1577.

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基于FAST-1新型高强快速锚固剂的筋-浆-岩黏结性试验

Reinforcement-Mud-Rock Bonding Test Based on FAST-1 New High Strength Anchoring Agent

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