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A platform for research: civil engineering, architecture and urbanism
Diversion tunnel construction method
The invention discloses a diversion tunnel construction method, and relates to the technical field of water conservancy and hydropower engineering, and the construction method comprises the steps of engineering planning and preparation before construction, earthwork and stone excavation of diversion tunnel inlet and outlet approach channels, opening open excavation and treatment, stone hole excavation and support, and concrete lining construction. The excavation section of a diversion tunnel body is 3 m * 3.3 m, the tunnel body is excavated in a full-section tunneling and one-time forming mode, a self-made movable air leg drill is adopted for drilling, and smooth blasting is conducted; slope excavation is carried out on a cave face, supporting measures such as fore shaft anchoring are carried out, an excavation mode that temporary supporting is carried out when the footage of each round is not larger than 3.0 m is adopted for a cave body, and a shaping combined steel mold and a steel pipe framework are adopted for supporting in cave body concrete lining construction. The diversion tunnel construction method has the remarkable beneficial effects in the aspects of structural stability, construction efficiency, quality safety and the like, and a powerful guarantee is provided for smooth construction and long-term stable operation of water conservancy and hydropower engineering.
本发明公开了一种导流隧洞施工方法，涉及水利水电工程技术领域，所述施工方法包括施工前的工程规划与准备，导流隧洞进出口引渠的土方和石方开挖，洞口明挖及处理，石方洞挖及支护，混凝土衬砌施工。该导流隧洞洞身开挖断面3m×3.3m，洞身开挖按全断面掘进、一次成形的方式施工，开挖采用自制移动式气腿钻钻孔，光面爆破；洞脸进行放坡开挖并进行锁口锚固等支护措施处理，洞身采用每轮进尺不大于3.0m就进行临时支护的开挖方式，洞身混凝土衬砌施工采用定型组合钢模，钢管构架支撑。本发明提供的导流隧洞施工方法在结构稳定性、施工效率、质量安全等方面均具有显著的有益效果，为水利水电工程的顺利施工和长期稳定运行提供了有力保障。
Diversion tunnel construction method
The invention discloses a diversion tunnel construction method, and relates to the technical field of water conservancy and hydropower engineering, and the construction method comprises the steps of engineering planning and preparation before construction, earthwork and stone excavation of diversion tunnel inlet and outlet approach channels, opening open excavation and treatment, stone hole excavation and support, and concrete lining construction. The excavation section of a diversion tunnel body is 3 m * 3.3 m, the tunnel body is excavated in a full-section tunneling and one-time forming mode, a self-made movable air leg drill is adopted for drilling, and smooth blasting is conducted; slope excavation is carried out on a cave face, supporting measures such as fore shaft anchoring are carried out, an excavation mode that temporary supporting is carried out when the footage of each round is not larger than 3.0 m is adopted for a cave body, and a shaping combined steel mold and a steel pipe framework are adopted for supporting in cave body concrete lining construction. The diversion tunnel construction method has the remarkable beneficial effects in the aspects of structural stability, construction efficiency, quality safety and the like, and a powerful guarantee is provided for smooth construction and long-term stable operation of water conservancy and hydropower engineering.
本发明公开了一种导流隧洞施工方法，涉及水利水电工程技术领域，所述施工方法包括施工前的工程规划与准备，导流隧洞进出口引渠的土方和石方开挖，洞口明挖及处理，石方洞挖及支护，混凝土衬砌施工。该导流隧洞洞身开挖断面3m×3.3m，洞身开挖按全断面掘进、一次成形的方式施工，开挖采用自制移动式气腿钻钻孔，光面爆破；洞脸进行放坡开挖并进行锁口锚固等支护措施处理，洞身采用每轮进尺不大于3.0m就进行临时支护的开挖方式，洞身混凝土衬砌施工采用定型组合钢模，钢管构架支撑。本发明提供的导流隧洞施工方法在结构稳定性、施工效率、质量安全等方面均具有显著的有益效果，为水利水电工程的顺利施工和长期稳定运行提供了有力保障。
Diversion tunnel construction method
一种导流隧洞施工方法
CHEN HAO (author) / XIE DONGYU (author) / MOU QINGFENG (author)
2024-11-22
Patent
Electronic Resource
Chinese
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
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