JWAJournal of World Architecture2208-34802208-3499Bio-Byword Scientific Publishing Pty. Ltd.10.26689/jwa.v10i3.15365ArticleResearch on Comprehensive Treatment Technology of High Fill and Deep Excavation Special Subgrade of Mountain Highwayhttps://artdesignp.com/journal/JWA/10/3/10.26689/jwa.v10i3.15365LiXiang20261032026-07-10The terrain of mountainous areas is high and undulating. This leads to high filling and deep excavation in the construction of mountain roads. The quality and safety risk of high fill and deep excavation construction is greater. If the construction treatment or subsequent treatment is improper, it is very easy to cause engineering diseases. Based on this, this paper takes the characteristics of high fill and deep excavation special subgrade projects in mountainous areas as the breakthrough point to explore the particularity of the project. Then, from the perspective of the disease mechanism of high fill and deep excavation subgrade, this paper analyzes the internal logic of common diseases such as subgrade settlement deformation, slope instability, damage, and destruction. Finally, the paper summarizes the key technologies for the treatment of high fill and deep excavation special subgrade in mountainous areas, and the disease problems and mechanism of anchored high fill and deep excavation subgrade. And it explores the effective disease treatment technology to ensure the high-quality development of Highway Engineering in mountainous areas.

Li W, 2024, Subgrade Design and Protection of a New Expressway Special Section. Transportation Manager World, 2024(12): 17–19.

Huang ZB, 2025, Key Points of Construction Technology for High Fill and Deep Excavation Subgrade of Expressway. Transportation World, 2025(33): 84–86.

Yang JB, 2026, Application Research on Construction Technology of High Fill and Deep Excavation Subgrade of Mountain Highway. Construction Machinery Technology and Management, 39(1): 153–154 + 157.

Sang XP, 2025, Construction Technology of High Fill and Deep Excavation Subgrade in Longnan Mountain Highway Engineering. China Building Metal Structure, 24(17): 106–108.

Wang ZJ, Chen C, 2025, Design and Construction Technology of High Fill and Deep Excavation Subgrade Slope of Urban Roads. Engineering Machinery and Maintenance, 2025(7): 59–61.

Qiao YT, 2025, Research on Design and Construction Technology of High Fill and Deep Excavation Subgrade Slope of Municipal Road. Journal of Xuzhou Institute of Engineering (Natural Science Edition), 40(1): 72–78.

Cai XQ, 2025, Design Method and Monitoring Technology of Highway High Fill and Deep Excavation Subgrade. Shanxi Communications Technology, 2025(2): 57–61.

Xu C, 2025, Research on Construction Points and Safety and Quality Control Measures of Highway High Fill and Deep Excavation Subgrade. Journal of Zhejiang Communications Vocational and Technical College, 26(1): 1–5 + 48.

Zhu QM, 2025, Research on Design and Construction of High Fill and Deep Excavation Subgrade Slope of Municipal Road. Product Design, 2025(14): 138–140.

Feng L, Shao XJ, 2026, Numerical Simulation Study on Slope Stability of High Fill Subgrade. Housing, 2026(2): 210–212.