A Construction Organization Method with Multiple Steps and Multiple Pilot Tunnels

Abstract

The invention discloses a multi-step and multi-pilot construction organization method, comprising the following steps: step 1: adopting pipe curtain combined with freezing construction technology and grouting method to carry out advance support; step 2, excavating the first-step pilot tunnel Step 3, carry out the excavation of the second step pilot tunnel; Step 4, carry out the excavation of the third step pilot tunnel; Step 5, carry out the excavation of the fourth step pilot tunnel; Step 6, carry out the excavation of the fifth step pilot tunnel Excavation. The multi-step and multi-pilot construction organization method provided by the present invention follows the eighteen-character guideline of "leading pipes, strict grouting, short excavation, strong support, fast closure, and frequent measurement", which is scientific, reasonable, safe and reliable, and follows the " The 18-character policy of pipe ahead, strict grouting, short excavation, strong support, fast closure, and frequent measurement is scientific, reasonable, safe and reliable, and the construction of each step and each pilot tunnel is advanced in a coordinated and orderly manner, reducing construction interference and reasonable Allocation of resources improves the efficiency of construction organization.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a multi-step and multi-pilot construction organization method. Background technique [0002] In my country, after long-term theoretical guidance and practical exploration, the construction methods of tunnels have become more diversified, and the construction technology has become more mature, such as traditional mine method, new Austrian method, tunnel open (cover) excavation method, shallow buried underground excavation method and shield method etc. Corresponding to different geological conditions and construction techniques, taking comprehensive consideration of construction safety, construction cost and construction speed, etc., the construction of tunnel projects also adopts scientific and reasonable construction organization methods suitable for the geological conditions and construction techniques of the project. , in order to meet the construction requirements ...

AI Technical Summary

Problems solved by technology

Large-section shallow-buried underground excavation tunnels usually use temporary supports to divide the section into multi-step and multi-pilot tunnels for underground excavation construction. The construction of multi-step and multi-pilot tunnels is complicated, the construction site is limited, and there are many cross-cutting operations between the pilot tunnels, and many construction organization problems are faced. , there is an urgent need for a scientific construction organization method

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