Application of Green Support Construction Technology in Mining Tunnels

Journal: Architecture Engineering and Science DOI: 10.32629/aes.v6i4.4785

Zhe Hai¹, Zhicheng Pan², Anwang Chen³, Hanxing Peng¹, Zaichao Peng¹, Weichao Han⁴, Liugen Yang¹

1. Sinohydro Engineering Bureau 8 Co.,Ltd., Power China, Changsha 410004, China
2. Sinohydro Engineering Bureau 8 Co.,Ltd., Power China, Changsha 410004, China; Power China Chizhou Changzhi Prefabricated Construction Co.,Ltd., Chizhou 247100, China
3. Henan Construction Engineering Fire Protection Technology Center, Zhengzhou 450000, China
4. China Electric Power Construction Corporation Beijing Survey and Design Institute Co., Ltd., Beijing 100024, China

Abstract

This study investigates the engineering application of green support construction technology in the Changjiu Mining 4# Tunnel (total length 1672.03 m; longitudinal slope 2.99‰). Support schemes were optimized for different rock mass classes (II–V), covering rock bolts, shotcrete, steel arch support, and advanced support. Green materials and processes—including full-length bonded bolts, self-drilling grouting bolts, wet-mix shotcrete, alkali-free liquid accelerators, and silica fume admixtures—were adopted to enhance durability, environmental performance, and construction efficiency. Key technical parameters such as mix proportions, rebound rates (≤25% for arch areas; ≤15% for other sections), and grouting pressures (0.5–1.0 MPa) were rigorously controlled. The application achieved significant improvements in support stability, material utilization, and ecological impact reduction. The findings provide technical reference for similar underground engineering projects under comparable geological conditions.

Keywords

tunnel support; green construction; shotcrete and rock bolt support; steel arch support; advanced support

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