Excavation supporting equipment for shaft

Abstract

The invention discloses excavation supporting equipment for a shaft. The excavation supporting equipment comprises an annular guiding frame, at least a group of drilling devices capable of being slidably installed on the annular guiding frame and rotating around the center of the annular guiding frame so as to excavate an annular isolation groove used for isolating an excavated rock stratum and asurrounding rock stratum, and a propulsion device for driving the drilling devices to feed in the rock stratum, the propulsion device pushes the drilling devices through the annular guiding frame so that the drilling devices drill into the rock stratum so as to form a sub isolation groove, and then, the drilling devices rotates by a certain angle along the annular guiding frame; and the propulsiondevice continues to push the drilling devices to drill into the rock stratum to form a next sub isolation groove, in this way, circulating is conducted, and the sub isolation grooves are connected with one another to form a circle of complete annular isolation grooves, so that the excavated rock stratum and the surrounding rock stratum are separated, the disturbance of the excavation rock stratumto the surrounding rock stratum is reduced, the accuracy of key parameters is improved, the regular contour of excavation rock stratum is ensured accordingly, and the quality of the shaft is naturally improved.

Description

technical field [0001] The invention relates to the technical field of shafts, in particular to auxiliary shaft excavation equipment. Background technique [0002] In order to reduce surface land use, the demand for super underground projects involving national defense projects, large-scale urban underground projects, and underground resource development is increasing, making shaft excavation technology widely used. [0003] Most of the existing vertical shafts are excavated by the drill and blast method, which means that the vertical shafts are excavated by means of drilling and blasting. However, since the excavated rock formations of existing shafts cannot be isolated from the surrounding rock formations, it is inevitable to cause large disturbances to the surrounding rock formations during the drilling and blasting process of the excavated rock formations. Due to the accuracy of key parameters such as the excavation position, the excavation of the shaft can easily induc...

AI Technical Summary

Problems solved by technology

However, since the excavated rock formations of existing shafts cannot be isolated from the surrounding rock formations, it is inevitable to cause large disturbances to the surrounding rock formations during the drilling and blasting process of the excavated rock formations. Due to the accuracy of key parameters such as the excavation position, the excavation of the shaft can easily induce over- and under-excavation phenomena, resulting in irregular contours of the excavated rock formations, which seriously affect the quality of the shaft

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