Research on optimized excavation approach applied in long-span underground cavern

Issue title: Artificial Intelligent Techniques and its Applications

Guest editors: Mahalingam Sundhararajan, Xiao-Zhi Gao and Hamed Vahdat Nejad

Article type: Research Article

Authors: Sun, Zhifeng^a | Wu, Xingxu^a | Qu, Honglue^{b; *}

Affiliations: [a] School of Civil Engineering, Southwest Jiaotong University, Chengdu, Sichuan, China | [b] School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu, Sichuan, China

Correspondence: [*] Corresponding author. Honglue Qu, School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu, Sichuan 610500, China. E-mail: [email protected].

Abstract: Long-span underground cavern excavation has been receiving wide application. This paper aims to give a theoretical study on the long-span underground cavern excavation as well as the damage zone of rocks subjected to various modes of blasting. Analysis is performed based on cylindrical wave theory with a start from blasting vibration and rock damage study, and then an optimized excavation method is proposed. Moreover, ultrasonic tests demonstrate validation of damage zone. It shows the proposed excavation approach is applicable.

Keywords: Long-span underground cavern, blasting vibration, rock damage zone, excavation method, ultrasonic test

DOI: 10.3233/JIFS-169382

Journal: Journal of Intelligent & Fuzzy Systems, vol. 34, no. 2, pp. 887-892, 2018