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楊潤基¹ , 盧許佳¹ , 高    慶²  , 譚維佳³

( 1. 中國水利水電第七工程局有限公司 ，四川 成都 611730;

2. 中鐵三局集團有限公司 ，四川 成都 611730;

3. 長安大學地質工程與測繪學院 ，陜西 西安710054)

摘   要： 鑒于濕陷性黃土在軌道工程中的影響研究較為缺乏，本文以太原地鐵 1 號線土建 7 標為工程依托，開展黃土濕陷性浸水現場試驗，在總結分析相關工程經驗的基礎上提出合理處置方案，并采用ANSYS 對所選方案進行數值模擬驗證。研究結果表明： 工程場地為Ⅱ級中等濕陷場地且無剩余濕陷量； 經比選，針對車站，部分采用整體下壓 3 m , 主體底板下黃土層采用三七灰土換填，附屬基坑采用坑內灰土擠密樁處理，過街通道采用暗挖洞內微型樁處理； 針對區間隧道，盾構工法洞內注硅化漿液處理（ 單液硅化法）為最優處置方案； 數值計算結果表明微型樁處理方案可以滿足要求。所得結論對今后類似工程設計與施工具有重要的參考和借鑒價值。

關鍵詞： 軌道工程； 濕陷性黃土； 浸水試驗； 處置方案； 數值模擬

中圖分類號： TU473      

文獻標志碼： A  

文章編號： 1005-8249 (2023) 05-0033- 10

DOI : 10. 19860/j.cnki.issn1005-8249.2023.05.006

YANG Runji¹ , LU Xujia¹ , GAO Qing² , TAN Weijia³

( 1. SINOHYDRO BUREAU 7 Co. ，Ltd. ，Chengdu 611730 , China;

2. China Railway Third Bureau Group Co. ，Ltd. ，Chengdu 611730 , China;

3. School of Geological Engineering and Surveying and Mapping , Chang ’an University , Xi ’an 710054 , China) 

Abstract: In view of the lack of research on the influence of collapsible loess in track engineering, based on the project of civil engineering bid 7 of Taiyuan Metro Line 1, this paper carries out loess collapsible flooding field test, puts forward a reasonable treatment scheme on the basis of summarizing and analyzing relevant engineering experience, and uses ANSYS to verify the selected scheme by numerical simulation. The research results show that the engineering site is a grade Ⅱ medium collapsible site with no residual collapsibility; after comparison and selection, for the station, part of the whole pressure is 3m, the loess layer under the main floor is replaced by Panax notoginseng lime-soil, and the auxiliary foundation pit is treated with lime-soil compaction pile in the pit. The street passage is treated with micro piles in the underground excavation tunnel; for the interval tunnel, the silicification slurry treatment (single liquid silicification method) is the best disposal scheme. The numerical results show that the treatment scheme of micro-pile can meet the requirements. The conclusion has important reference value for the design and construction of similar projects in the future.

Keywords：rail transit engineering; collapsible loess; flooding test; disposal scheme; numerical simulation

? 基金項目：國家自然科學基金項目( No. 51774166) 。

作者簡介：楊潤基(1990—) , 男，本科，工程師，主要從事鐵路施工技術管理工作。 

通信作者：盧許佳(1985—) , 男，本科，高級工程師，主要從事工程施工管理工作。 

收稿日期：2022-07-31