An Implementation Framework for On-Site Shield Spoil Utilization—A Case Study of a Metro Project

Author:

Yang Fangsheng1,Cao Taibo1,Zhang Tingrong1,Hu Junfeng1,Wang Xinrui23,Ding Zhikun23,Wu Zezhou23ORCID

Affiliation:

1. China Construction First Group South China Region, Shenzhen 518040, China

2. Key Laboratory for Resilient Infrastructures of Coastal Cities, Ministry of Education, Shenzhen University, Shenzhen 518060, China

3. Sino-Australia Joint Research Centre in BIM and Smart Construction, Shenzhen University, Shenzhen 518060, China

Abstract

A majority of metro projects have been constructed to reduce urban traffic congestion and to improve the convenience of public transportation, but these projects also produced a significant amount of engineering slag and mud. The shield construction method could improve the efficiency and safety; this technique has been frequently used in tunnel excavation projects. However, the spoil produced during the shield construction is challenging to deal with. In literature, though there has been an increasing number of studies on the technologies of utilizing shield spoil, the on-site utilization of shield spoil is still a subject of little research. This study introduced an implementation framework for the on-site utilization of shield spoil based on successful case experiences. It aims to assist project managers in efficiently implementing on-site resource utilization projects and to address the gaps in the relevant field. A case study was conducted in the Shenzhen Metro Line 13 North Extension Project; this study collected data through six semi-structured interviews and field research, analyzed the data, and constructed a framework using thematic analysis and focus group discussions. The three components of the implementation framework are project planning, project construction, and project closing, and each section describes what must be accomplished during that phase. Additionally, three recommendations—(1) combining intelligent technology to optimize the existing equipment, (2) utilizing lean technology in project execution, (3) establishing strategic partnerships with construction waste recycling enterprises—are also made for the development of the shield spoil utilization project. This study uses the Shenzhen Metro Line 13 North Extension Project as a model to theoretically underpin future research on shielding spoil on-site during resource utilization projects and to achieve the repeatable promotion of shield spoil utilization technology in Shenzhen.

Funder

Guangdong Basic and Applied Basic Research Foundation

National Natural Science Foundation of China

Publisher

MDPI AG

Subject

Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment,Geography, Planning and Development,Building and Construction

Reference34 articles.

1. COVID-19 effects on property markets: The pandemic decreases the implicit price of metro accessibility;Yang;Tunn. Undergr. Space Technol.,2022

2. China Association of Metros (2022). Urban Rail Transit 2021 Annual Statistics and Analysis Report, China Association of Metros.

3. Chen, G. (2019). Discussion on Rational Disposal of Slag in Subway Shield Tunnel. Chin. Foreign Archit., 2.

4. Shenzhen Housing and Construction Bureau (2023, April 25). Shenzhen Construction Waste Management Special Plan (2020–2035), Available online: http://zjj.sz.gov.cn/csml/bgs/xxgk/tzgg_1/bgsgcjs/content/post_8603698.html.

5. Analysis of the current situation and countermeasures of construction waste disposal in Shenzhen;Li;Constr. Technol.,2022

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