| Design and Optimization of Compound for Outer Part of Stop-grouting Plug |
| Received:September 22, 2022 Revised:September 22, 2022 |
| DOI：10.12136/j.issn.1000-890X.2024.04.0281 |
| Key Words: stop-grouting plug；out part；compound；sealing performance；optimization design；finite element analysis |
| Author Name | Affiliation | E-mail | | XIAO Mingqing | China Railway Siyuan Survey & Design Group Co.，Ltd | tsyxmq@163.com | | WANG Kejin | National-Local Joint Engineering Research Center of Underwater Tunnelling Technology | | | Cui Haocheng | Beijing University of Chemical Technology | | | YANG Haibo | Beijing University of Chemical Technology | |
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| Abstract: |
| A new type of stop-grouting plug with sealing and exhausting functions was designed，and numerical simulation analysis of the actual working state of the stop-grouting plug was carried out using the finite element method to optimize the compound of the outer part of the stop-grouting plug.The results showed that as the hardness of the compound for the outer part of the stop-grouting plug decreased，the sealing performance of the stop-grouting plug was improved.Taking into account both sealing performance and cost，it was determined that the outer part of the stop-grouting plug was made of NR compound with a Shore A hardness of 40 degrees. |
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