Water level observation pipe capable of realizing layered report of frozen wall intersection conditions

Abstract

The invention discloses a water level observation pipe capable of realizing layered report of frozen wall intersection conditions. The water level observation pipe comprises N horizon observation pipes, wherein N is a positive integer and is greater than or equal to 2; the N horizon observation pipes are coaxially sleeved together, the upper ends of the N horizon observation pipes extend out of the ground, and the lower ends of the N horizon observation pipes are located at different observation horizon positions. A water return hole communicated with the fluid at the horizon to be observed isformed in the wall of the water return pipe at the position, corresponding to the horizon to be observed, of each horizon observation pipe, and the water return holes of the horizon observation pipesare not communicated with one another. According to the water level observation pipe, only one water level observation hole is constructed in each shaft, water level conditions of multiple layers canbe reported, reporting tasks of different layers are completed, the number of construction water level observation holes is reduced, the construction cost is reduced, the construction time is saved,well completion speed is increased, the possibility of water mixing of the water level observation holes is reduced, the risk that frozen walls are difficult to intersect due to water mixing of the water level observation holes is reduced, and safety and reliability of the frozen wall intersection process are guaranteed.

Description

Technical field [0001] The invention relates to the technical field of freezing construction. Specifically, it is a water level observation tube that can report the intersection of freezing walls in layers. Background technique [0002] Freezing sinking is a construction method that uses artificial refrigeration technology to temporarily reinforce unstable formations and isolate groundwater. The freezing method is suitable for loose and unstable alluvial strata, fractured water-bearing rock formations, soft mudstones, and rock formations with particularly high water content and water pressure. It can be used as a regular construction method for mine projects with complex geological conditions, and also as a means of engineering rescue and accident treatment. It is widely used in the construction of vertical shafts, inclined shafts, and horse head gates in coal mine tunnel projects, and has been used in construction Subways, bridges and culverts, large-volume underground chamber...

AI Technical Summary

Problems solved by technology

[0007] For the relatively narrow space in the shaft, it is also difficult to choose the construction location of the water level observation hole. At the same time, the tunneling speed will also be restricted due to the influence of the water level observation hole during the formal excavation of the frozen shaft.

Images