Method for plugging power cable tunnel duct piece bolt hole

Abstract

The invention relates to a method for plugging a power cable tunnel duct piece bolt hole, which comprises the following steps: firstly processing expansion and seam along a tunnel dust piece bolt hole; then, blocking an inner cavity, injecting slurry chemically and processing airtight so as to complete plugging treatment for a bolt hole. Compared with the prior art, the method is characterized by simple operation and convenient plugging and can quickly treat fissure appeared on the power cable tunnel duct piece bolt hole; in addition, corrosion-resistant performance is relatively good.

Description

technical field [0001] The invention relates to a method for plugging leakage, in particular to a method for plugging bolt holes in electric cable tunnel segments. Background technique [0002] With the construction and operation of a large number of tunnels at home and abroad, the problem of tunnel longitudinal settlement, especially longitudinal uneven settlement, has gradually emerged. A large number of soft soil tunnels have excessive longitudinal settlement or uneven settlement due to various reasons, causing water seepage and mud leakage in the tunnel or partial structural damage, or longitudinal distortion of the internal structure, affecting the normal operation of the tunnel and affecting the safety of the tunnel structure and operation. There are certain potential threats to safety and comfort, which in turn affect the operation of various structures around and on the ground. For traffic tunnels, if the longitudinal uneven settlement of the tunnel is too large, th...

AI Technical Summary

Problems solved by technology

For traffic tunnels, if the longitudinal uneven settlement of the tunnel is too large, the longitudinal height difference of the road surface will be too large, and the road surface height difference and flatness exceed the standard. The maintenance task is aggravated; for the power cable tunnel, when the longitudinal deformation is too large, it will bring additional stress to the cable to deform it, and even cause damage to the cable in severe cases, affecting power transmission

Therefore, the longitudinal uneven settlement of the tunnel has caused huge economic losses to the tunnel operation management department and the country, and even caused serious social adverse effects.

[0003] Cable waterproofing is an important part of cable safety operation management. Long-term soaking of power cables in water has a great impact on the safe operation and life of power cables. Therefore, the waterproofing of power tunnels is very important. It will make the cave humid, which is detrimental to the air quality, the durability and flexibility of the electromechanical facilities and power cables in the cave

During the operation period, groundwater often leaks into the tunnel through channels such as concrete lining deformation joints, construction joints, cracks and even concrete pores, causing metal structures such as cable brackets and clamps to be in a humid environment and rust, mildew, deterioration, and failure. Incomplete drainage system, water accumulation in tunnels or working wells will seriously affect the daily monitoring and safe operation of cables