某矽卡岩巷道岩土膨胀性试验研究及支护技术优化

现代矿业 ›› 2026, Vol. 42 ›› Issue (04): 21-24，29.

某矽卡岩巷道岩土膨胀性试验研究及支护技术优化

于兴社^1，2 耿帅^1，2 王社光^1，2 于庆磊^2，3 张素娜^1，2 杨志强^1，2

1 .河北钢铁集团沙河中关铁矿有限公司；2.河北省复杂铁矿低碳智能高效开采技术创新中心； 3.东北大学资源与土木工程学院

出版日期:2026-04-25 发布日期:2026-05-06

Research on Skarn and Soil Expansion Characteristics and Support Technology Optimization of a Syenite Tunnel

YU Xingshe1，2 GENG Shuai1，2 WANG Sheguang1，2 YU Qingleia2，3 ZHANG Suna1，2 YANG Zhiqiang1，2

1 .Shahe Zhongguan Iron Mine Co.，Ltd.，Hebei Iron and Steel Group；2.Hebei Complex Iron Ore Low Carbon Intelligent and Efficient Mining Technology Innovation Center；3.School of Resources and Civil En ⁃ gineering，Northeastern University

Online:2026-04-25 Published:2026-05-06

摘要/Abstract

摘要： 为深入了解矽卡岩软岩巷道使用过程中的膨胀变形机制，评价黏土矿物对矽卡岩膨胀特性的影响。首先进行样岩点荷载试验和矿物成分分析，明确矽卡岩中膨胀性矿物的成分及含量；其次选取不同黏土矿物含量的矽卡岩，采用侧限膨胀率法进行测定，分析矽卡岩膨胀特性与黏土矿物类型和含量之间的关系。试验测得，不同黏土矿物成分的矽卡岩100 h 的膨胀率最大为 99.32%，最小为19.26%。试验结果表明，黏土矿物成分对矽卡岩膨胀率的影响程度由强到弱为斜绿泥石>高岭石>利蛇纹石。采用黏土稳定剂进行膨胀性改性试验研究，结果表明黏土稳定剂自由面压力对绿泥石膨胀性有明显的抑制作用。针对矽卡岩浸水巷道，创新提出围岩改性+锚网喷联合支护技术。工程试验表明，改性防膨联合支护技术可有效延长矽卡软岩巷道服役时间，可进一步推广应用。

关键词: 矽卡岩, 黏土矿物含量, 侧限膨胀率, 膨胀性改性

Abstract: In order to deeply understand the expansion deformation mechanism during the use of ar ⁃ gillaceous soft rock tunnels in skarn，and to evaluate the influence of clay minerals on the expansion char ⁃ acteristics of skarn.Firstly，sample rock point load tests and mineral composition analysis were conducted to clarify the composition and content of expansive minerals in skarn.Secondly，skarn with different clay mineral contents were selected，and the side-limit expansion rate method was used for measurement，and the relationship between the expansion characteristics of skarn and the type and content of clay minerals was analyzed.The test results showed that the maximum expansion rate of skarn with different clay mineral compositions within 100 h was 99.32%，and the minimum was 19.26%.The test results indicated that the influence degree of clay mineral composition on the expansion rate of skarn ranged from strong to weak: chlorite >kaolinite >limonite.The expansion modification test research using clay stabilizers was carried out，and it was shown that the free surface pressure of the clay stabilizer had a significant inhibitory effect on the expansibility of chlorite.For the skarn waterlogged tunnel，a new technology of surrounding rock modification +anchor-net-spray combined support was proposed.Engineering tests showed that the modi⁃ fied anti-expansion combined support technology could effectively extend the service life of skarn soft rock tunnels，and could be further promoted and applied.

Key words: skarn, clay mineral content, confined expansion rate, swelling modification

于兴社, 耿帅, 王社光, 于庆磊, 张素娜, 杨志强. 某矽卡岩巷道岩土膨胀性试验研究及支护技术优化[J]. 现代矿业, 2026, 42(04): 21-24，29.

YU Xingshe, GENG Shuai, WANG Sheguang, YU Qingleia, ZHANG Suna, YANG Zhiqiang, . Research on Skarn and Soil Expansion Characteristics and Support Technology Optimization of a Syenite Tunnel[J]. Modern Mining, 2026, 42(04): 21-24，29.

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