Pumped storage power station pressure piping inclined shaft non-demolition heading machine well-forming technology

Abstract

The invention discloses a pumped storage power station pressure piping inclined shaft non-demolition heading machine well-forming technology comprising the following steps that (1), advanced pilot hole drilling is carried out; (2), the technology of mine shaft rising boring is adopted to carry out bearizing on the advanced pilot hole drilled in the step (1), and a pioneer well is formed; and (3),the pioneer well dug in the step (2) is excavated to an inclined shaft wellbore by using a heading machine. The pumped storage power station pressure piping inclined shaft non-demolition heading machine well-forming technology can realize construction of an inclined well by no or few people underground, the number of workers in the inclined shaft in the pumped storage power station pressure pipinginclined shaft wellbore well-forming technology can be reduced, at the same time, the labor intensity of the construction personnel can be reduced, and the construction safety can be improved.

Description

technical field [0001] The invention relates to the field of drilling inclined wells with large inclination angles, in particular to a non-explosive tunneling machine well forming process for inclined wells of pressure pipelines in pumped storage power stations. Background technique [0002] my country is building pumped storage power stations at a rate of 3 to 4 per year to solve the problem of peak-valley regulation of the power grid. The pumped storage power station needs to take advantage of the terrain characteristics of the mountain to build an upper reservoir on the upper part of the mountain, a lower reservoir on the lower part of the mountain, and build tunnel shafts and tunnels inside the mountain for a series of projects for power generation and pumping. [0003] The focus and difficulty of pumped storage power station construction is the pressure pipeline used to generate potential energy, especially the inclined well with large inclination angle. For the constr...

AI Technical Summary

Problems solved by technology

Whether it is the construction of the pilot well by the climbing tank method or the expansion of the drilling and blasting method, a large number of workers are required to work in the inclined shaft. The working environment is difficult, the labor intensity of the workers is high, and safety accidents often occur

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