Abstract:

Combined with the geological conditions of the construction area of Caofang intake shaft in

Zhaozhuang Coal Industry，the technical scheme of shaft excavation construction is designed. The surface

soil and bedrock weathering section and bedrock section.During the shaft excavation，the mechanized con⁃

struction technology of FJD9 C umbrella drill + HZ6 B central rotary rock grab + deep hole smooth blasting

is adopted，which can improve the efficiency of bedrock excavation.Commercial concrete + bottom unload⁃

ing bucket + integral formwork is used to realize the support of shaft surrounding rock.The water prevention

and control technology scheme of ground grouting，wall grouting plugging and drainage is adopted，which

can meet the needs of wellbore water prevention and control.The engineering practice shows that the excava⁃

tion scheme adopted in the intake shaft of Zhaozhuang Coal Industry has high construction efficiency，which

is helpful to shorten the construction period of shaft excavation.

Key words:

intake shaft, shaft construction, rockloading and ganguedischarge, grouting at surface

ground