Water gushing treatment method suitable for inclined shaft under steep dip water-rich rock stratum

Abstract

The invention discloses a water gushing treatment method suitable for an inclined shaft under a steep dip water-rich rock stratum. According to the grading and segmental tunnel water leakage treatment principle of combining dredging and blocking, mainly using blocking, assisting in discharging and discharging in a limited mode, inclined shaft water gushing treatment is carried out by adopting comprehensive measures such as surrounding rock consolidation grouting, surrounding rock curtain grouting, primary support reinforcement treatment, waterproof separation wall and radial grouting, the selected grouting material accords with the current national specification standard, and therefore the dual effects of permanent waterproofing and reinforcement can be achieved. According to the method, the characteristics under the steep dip water-rich rock stratum are fully considered, multiple measures are integrated, all disordered water is gradually drained to a position in front of a water gushing section through circulating grouting water control, the disordered water is changed into ordered water, finally, the effects of permanent water prevention and grouting water plugging are achieved, and the method has the advantages of being safe, rapid, efficient and economical; and the method is suitable for cavern water leakage projects of the steep dip water-rich stratum, and particularly has obvious economic, safe and efficient advantages in tunnel construction with reverse slope construction and large leakage water quantity.

Description

technical field [0001] The invention relates to the construction field of inclined shafts of tunnels, in particular to a water gushing control method suitable for inclined shafts descending steep water-rich rock formations. Background technique [0002] The water gushing problem of the tunnel is related to the surrounding rock fissures and seepage field, among which the high water pressure aggravates the water gushing problem of the tunnel. The concept of limited discharge has been deeply rooted in the hearts of professionals, and grouting and water blocking have been gradually applied on site. However, for the problem of water gushing in inclined wells under steep water-rich rock formations with steep slopes, there is currently no successful experience for reference. [0003] The construction of inclined wells in water-rich areas has great risks. If reasonable water inrush control measures are taken indisputably, and reasonable construction procedures and methods are adopt...

AI Technical Summary

Problems solved by technology

However, for the problem of water gushing in inclined wells under steep water-rich rock formations with steep slopes, there is currently no successful experience for reference

[0003] The construction of inclined wells in water-rich areas has great risks. If reasonable water inrush control measures are taken indisputably, and reasonable construction procedures and methods are adopted, it will have a great impact on the construction progress and increase construction costs.

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