Detection and treatment method of karst water in tunnel

Abstract

The invention discloses a detection and treatment method of the karst water in a tunnel. The detection and treatment method of the karst water in the tunnel includes the following steps of a, detection of karst, specifically, before construction of the tunnel, the surrounding rock geological disaster condition in front of the tunnel face is understood so as to determine the location, scale and size of the karst; b, grouting construction with a large pipe shed; and c, grouting construction with a small pipe or a curtain. By adoption of the treatment principle of main blocking and combination of draining and blocking, a basic thought of the treatment technology of the karst water in the tunnel is determined. By detecting the specific location of the karst water and water yield, and taking measures of guiding and draining part of the karst water timely, security of operating personnel and equipment can be guaranteed; on the basis of analysis of the karst water and guiding and draining part of the karst water, full-face pre-grouting of the tunnel is conducted so as to block a passage of the karst water and guarantee security of tunnel construction. The detection and treatment method of the karst water in the tunnel is extremely suitable for treatment construction of the karst water in the tunnel, and meanwhile, has the reference significances for construction of highways, municipal works and water conservancy tunnels under similar geological conditions.

Description

technical field [0001] The invention relates to a method for detecting and treating karst water, in particular to a method for detecting and treating karst water in a tunnel. Background technique [0002] Karst collapses are widely distributed in my country, and many fields suffer from them. Among them, highways, railways and mines suffered the most, followed by farmland water conservancy, urban construction, road and pipeline facilities, etc. With the implementation of my country's western development strategy, expressways and railways continue to extend to mountainous areas. According to the "13th Five-Year Plan" adjusted by the Ministry of Communications in early 2016, at the end of the "13th Five-Year Plan", the mileage of my country's highways will reach 1.5 million km, of which the expressway mileage will reach 138,000 km. A large number of roads under construction or in planning inevitably need to pass through karst-developed areas, and a large number of various kars...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method that can solve the problem that karst water in existing tunnels can easily hinder construction and cause casualties, and with the discharge of karst water, it is easy to cause surface subsidence, reduce water resources, and deteriorate land resources. , the deterioration of the geological environment, leading to water pollution; the karst deposits also collapse and sink due to the flow of groundwater, thereby changing the stress distribution pattern around the cave and affecting the stability of the tunnel. Tunnel karst water detection and treatment method for technical problems

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