Method for preventing and controlling water by using freezing pipes in annular water intercepting tunnel

Abstract

The invention discloses a method for preventing and controlling water by using freezing pipes in an annular water intercepting tunnel. The method comprises the following steps of: 1, measuring and paying off: determining the layout positions of the annular water intercepting tunnel required to be dug and a plurality of ear caves according to the layout positions of a plurality of embedded freezing pipes and the structural size of a freezing ring in a freeze sinking process; 2, digging the annular water intercepting tunnel; 3, constructing an annular water blocking body, namely respectively digging the ear caves in the dug annular water intercepting tunnel from front to back, performing water preventing and controlling treatment after digging, and thus forming the annular water blocking body in the construction area; and 4, backfilling the annular water intercepting tunnel, namely backfilling the dug annular water intercepting tunnel by adopting concrete. The method is simple in steps, convenient to construct and low in construction cost, has a good water preventing and controlling effect, and can effectively solve the actual problems of high construction cost, high construction difficulty, poor water preventing and controlling effect and the like in the conventional freezing pipe water preventing and controlling method.

Description

technical field [0001] The invention belongs to the technical field of water prevention and control in coal mine construction, and in particular relates to a water prevention method for treating frozen pipes in an annular water interception roadway. Background technique [0002] The freezing method is to drill a certain number of freezing holes around the wellbore to be excavated before the wellbore is excavated. A freezing pipe is installed in the hole. The low-temperature brine flows in the freezing pipe to absorb the heat of the surrounding strata, and the loose, Frozen cylinders are formed in water-bearing unstable formations, and the frozen cylinders gradually expand and connect into a closed cylinder that meets the design thickness and strength—the frozen wall, to resist soil and water pressure, isolate the connection between groundwater and the wellbore, and It is a special drilling method to dig a wellbore under the protection of a well to safely pass through the wat...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a water-prevention method for treating frozen pipes in an annular cut-off lane in view of the deficiencies in the above-mentioned prior art. Effectively solve practical problems such as high construction cost, difficult construction, and poor water prevention and control effect existing in the existing freezing pipe prevention and control water treatment method

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