Method for performing large-gradient deviated well construction by using full-section needle beam trolley and needle beam trolley

Abstract

The invention discloses a method for performing large-gradient deviated well construction by using a full-section needle beam trolley. The full-section needle beam trolley comprises a needle beam and a die body, wherein the needle beam is arranged in a die body frame of the die body and can move axially; and an included angle between a large-gradient deviated well and a horizontal plane is more than 10 degrees. The method comprises the following steps of: guiding eight sections of guiding steel wire ropes in the needle beam, dragging six sections of traction steel wire ropes in the needle beam trolley, performing the reinforcement, supporting, limit and anti-skid firming of the needle beam trolley and concreting once. The invention also discloses the needle beam trolley, which comprises aneedle beam guiding device, wherein the needle beam guiding device consists of two dual-wheel pulleys, three single-wheel pulleys and eight sections of guiding steel wire ropes. The method for performing the large-gradient deviated well construction by using the full-section needle beam trolley has the advantages of simple construction process, small construction difficulty, high construction quality, quick construction progress and short construction period, potential safety hazards can be reduced or avoided, and labor cost and time cost can be saved.

Description

technical field [0001] The invention relates to a construction method and construction equipment for an inclined shaft, in particular to a method for constructing a large-slope inclined shaft with a full-section needle-beam trolley and the needle-beam trolley. Background technique [0002] The inclined shaft in the inclined shaft project of the tunnel is a pressurized circular tunnel. The traditional construction method generally uses "combined steel formwork + full frame" and "steel formwork trolley" for concrete pouring construction, that is, manually erecting the full frame, installing and reinforcing the combination The construction plan of concrete pouring with steel formwork and two pouring of floor and side arch has the advantages: the construction technology of concrete pouring in these two methods is mature, and the construction personnel are easy to master and skilled in operation; the disadvantage is that the construction process is complicated , Large safety haza...

AI Technical Summary

Problems solved by technology

[0002] The inclined shaft in the inclined shaft project of the tunnel is a pressurized circular tunnel. The traditional construction method generally uses "combined steel formwork + full frame" and "steel formwork trolley" for concrete pouring construction, that is, manually erecting the full frame, installing and reinforcing the combination The construction plan of concrete pouring with steel formwork and two pouring of floor and side arch has the advantages: the construction technology of concrete pouring in these two methods is mature, and the construction personnel are easy to master and skilled in operation; the disadvantage is that the construction process is complicated , Large safety hazards, difficult control of project quality, high input costs, slow construction progress, affecting the construction period

[0003] The shortcomings of the above traditional construction methods are particularly obvious in the construction of large-slope inclined shafts. For example, the slope of the inclined shaft is 20°, that is, the angle between the large-slope inclined shaft and the horizontal plane is 20°, the excavation diameter is 9m, and the diameter after lining is 7.5m , In the case of a total length of 160m, according to the traditional concrete pouring construction plan, such as: combined steel formwork + full hall frame, steel formwork trolley, it is difficult to organize and implement, and cannot guarantee quality and safety, and affect the construction period, it is difficult to ensure that the inclined shaft of the project Realization of overall project goals

At present, there are no literature reports and application projects on the use of full-section needle beam trolleys in the construction of inclined shafts with a slope of 20°.

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