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Fangjiawan Tunnel Import Main Tunnel Drilling Breaks Through 2000 Meters in Section 10 of Xi'an-Chengdu Passenger Dedicated Line

2015-08-10 557 0人评论

　　8月3日，西成客专十工区承建的房家湾隧道进口正洞掘进顺利越过2000米，为标段内单口进尺最长的隧道。

　　十工区承建的房家湾隧道进口2618米任务，于2013年8月20日喇叭口挑顶结束进入正洞施工，至2015年8月3日，历时713天，顺利掘进2000米，在这713个日夜里，西成客专十工区全体员工始终以饱满的热情和创先争优的精神，认真贯彻业主、监理及上级单位的管理要求，全面推行标准化、精细化管理，立足高起点，坚持高标准，分工明确、责任到人，忙而不乱、有条不紊，隧道施工始终向着既定目标推进。

　　房家湾隧道穿越溶洞、膨胀岩土、富水断层等不良地质地带，给施工带来了极大难度，特别是2015年3月份开工以来，隧道掘进遇长段落炭质页岩内偏压软弱围岩段，右侧边墙收敛大、如何控制变形及初支开裂成为较大难题，工区积极摸索采用自进式锚杆、中管棚锁脚、强注浆等加固及减小收敛的措施，及时联系设计院根据围岩采取强支护措施，保证了隧道在不良地质带中稳步前进。

　　科学、动态的隧道施工管理理念，高标准、严控制的工作思路，大大提高了隧道施工效率，有力促进了隧道施工的顺利开展，确保了房家湾隧道进口安全生产713天，胜利突破掘进2000米大关，为目前冲刺剩余618米掘进任务、实现既定目标奠定了坚实基础。

First High-Risk Extra-Long Karst Highway Tunnel Designed by China Railway Siyuan Survey and Design Group (CRFSDI) — Gaojiaping Extra-Long Karst Tunnel on the Mazhu Expressway — Holed Through

Threading the Needle Beneath the Yangtze River

Fangjiawan Tunnel Import Main Tunnel Drilling Breaks Through 2000 Meters in Section 10 of Xi'an-Chengdu Passenger Dedicated Line

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Fangjiawan Tunnel Import Main Tunnel Drilling Breaks Through 2000 Meters in Section 10 of Xi'an-Chengdu Passenger Dedicated Line

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