Abstract
With the rapid development of underground space technology in China, the construction of tunnel caverns is increasing. Good air quality in the tunnel is not only necessary for labor safety, but also to create a good construction environment conditions, improve work efficiency, speed up the construction of an important guarantee. The complex construction in the caverns, resulting in a large number of dust will flow to other caves, not only affect the cavern, but also on the other cave caused secondary pollution, affecting its normal construction operations. However, the cavern group construction work, just rely on the traditional single tunnel construction ventilation technology is obviously unable to meet the dust group requirements. Therefore, the study on the distribution of dust in the construction of the caverns is of great significance to improve the dust control work.
Highlights
Line 10 Yuelai to Wang Jiazhuang interval design mileage for YK43+143.9689~YK44 +755.200, including the left and right lines
According to JTG F60-2009 “highway tunnel construction technical specifications” in the tunnel dust concentration requirements: more than 10 % of free silica dust, per cubic meter of air shall not be greater than 2 mg/s
According to the regulations of tunnel dust concentration standards: when the dust concentration in the tunnel is lower than the allowable value of 2 mg/m3, the health of the staff is less harmful
Summary
Line 10 Yuelai to Wang Jiazhuang interval design mileage for YK43+143.9689~YK44 +755.200, including the left and right lines. The design mileage of Wang Jiazhuang garage is RCK0+000.000~RCK1+057.836, which is divided into left and right lines. Running tunnel and access tunnel is divided into single-hole single-track, single-hole two-lane, single-hole three-three three types. Section is divided into A~E a total of 5 sections, which are all straight wall arch section and take mining method of tunnel construction to composite lining.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
