Introduction
Tunnel construction is an important part of modern infrastructure projects. The development of transportation engineering technology and the improvement of production efficiency are closely related to the improvement of tunnel construction technology. The research and application of tunnel construction technology have great their progress in terms of safety reliability, construction speed and cost saving in recent years. This paper will take a water diversion project in China as an example to elaborate on the current development situation of tunnel construction technology and introduce some improvement measures and effective engineering practices, so as to reflect the achievements of our country in the aspect of tunnel excavation technology and to provide useful reference and enlightenment for the design, construction and management of similar engineering projects.
Technical Review
A water diversion project was delivered in 2018 with a total constructed length of 11.1 kilometers and an excavation depth of 65 meters. The overall construction requirements and process are shown in the figure below.
英文原文
Introduction
Tunnel construction is an important part of modern infrastructure projects. The development of transportation engineering technology and the improvement of production efficiency are closely related to the improvement of tunnel construction technology. In recent years, significant progress has been made in terms of tunnel construction safety and reliability, construction speed and cost-efficiently. This paper will use a water diversion project in China as an example to discuss the current development of tunnel construction technology and introduce some measures and effective engineering practices to reflect the impressive achievements made in terms of tunnel excavation technology, and to provide useful references and insights for the design, construction and management of similar projects.
Technical Review
A water diversion project was executed in 2018 with a total constructed length of 11.1 kilometers and an excavation depth of 65 meters. The overall construction requirements and process are presented in the figure below.
The tunnel route of this project is complicated and has long distances between major sub-areas, and the geological conditions are complicated and highly heterogeneous. Therefore, the original tunnel construction method is not applicable in this case. In order to ensure smooth progress and guarantee the quality of the whole project, it is necessary to innovate the tunnel construction technology and ensure the safety and reliability of the project.
Innovation and Improvement of Tunnel Construction Technology
In order to effectively complete the construction tasks of the project and ensure product quality, a new tunnel construction method was proposed – Multi-bore Shield Construction Technology. Compared with the traditional excavation methods, this method can reduce the construction time and cost, and guarantee the safety and quality of the tunnel in a more efficient way, which is applied in many large-scale projects in China.
This project is constructed using the Multi-bore Shield Construction Technology, which makes full use of the flexibility of shield structure, raising the construction speed and accuracy. The construction parameters and steps of this tunnel construction trchnology are shown in the figure below.
该技术采用从未探测到的新方法，即分担施工，在这个项目中，一个护盾示意图被分担，使汇水洞按照预定的技术参数进行施工，同时保证施工质量。
施工技术的优化
该工程还采用新的BTS自动测量技术，将地质变化和施工技术紧密结合在一起，使施工更加高效，而且能够更好地实现质量保证。此外，该工程采用了安全护盾闭路系统，每次施工都会对设备进行按时和完整的检查，并与其他施工参数实时校验以确保施工安全。
安全管理
该工程在安全管理方面采取了严格的措施，例如组建专门的安全管理队伍，定期进行安全检查，并严格执行施工安全管理规定；及时识别危险源，及时做出应对措施，从而确保施工的安全顺利。
Conclusion
Through the detailed introduction of the engineering construction project, we can see that the current tunnel construction technology in China is developing rapidly, and a variety of tunnel excavation methods and techniques can effectively meet the design requirements of the engineering scheme. The government attaches great importance to the safety and quality of the engineering construction. In order to ensure the quality of the tunnel construction, the construction operation must comply with the relevant regulations and technical requirements, and at the same time combine the actual situation of the engineering construction to implement the advanced technical measures, so as to ensure the safety and efficiency of the engineering construction.
