ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2018, Vol. 38 ›› Issue (8): 1350-1360.DOI: 10.3973/j.issn.2096-4498.2018.08.012
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TIAN Jia1, LI Jinpeng2
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Abstract:
The construction technology of mountain tunnel in China is underdeveloped. Hence, the mechanized construction method for large crosssectional tunnel on highspeed railway is introduced. A new kind of tunnel construction organization mode with four tunnel construction lines, i.e. excavation, support, lining and water cable channel, is developed based on a suit of tunnel mechanized construction equipment and field test, so as to realize the continuous construction of large crosssectional tunnels in Grade Ⅳ and Ⅴ surrounding rocks. A series of problems, i.e. accurate positioning of excavation blasting holes, accurate installation of system anchor bolt and simultaneous uploading of construction information, have been solved by automatic tripleboom rock drilling jumbo. The cycling time of each construction process has been shortened, and the safe management of early closure of weak surrounding rock has been realized by configuration and application of largescale equipment with high power. The monitoring data and applicable results show that the construction quality of mechanized construction method for large crosssectional tunnel is feasible and safe, and the construction efficiency is high.
Key words: highspeed railway tunnel, weak surrounding rock, mechanization, large crosssection excavation, stability of surrounding rock, advance prereinforcement
CLC Number:
U 455.3
TIAN Jia, LI Jinpeng. Application of Mechanized Construction Method to Large Crosssectional Tunnel with Soft Surrounding Rocks[J]. Tunnel Construction, 2018, 38(8): 1350-1360.
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URL: http://www.suidaojs.com/EN/10.3973/j.issn.2096-4498.2018.08.012
http://www.suidaojs.com/EN/Y2018/V38/I8/1350