A tunnel rescue drilling rig

Abstract

The invention provides a tunnel rescue drilling rig, which comprises a support sleeve and a slag discharge screw shaft. The slag discharge screw shaft is arranged in the support sleeve. The central axis of the slag discharge screw shaft coincides with the central axis of the support sleeve. There is a slag discharge gap between the slag discharge screw shaft and the support sleeve. The slag discharge screw shaft is provided with a through channel for trapped people to pass through along the axis thereof. The tunnel rescue drilling rig of the invention has the advantages of capability of improving the rescue efficiency and rescue probability, compact structure, and the like.

Description

technical field [0001] The invention relates to the field of tunnel rescue, in particular to a tunnel rescue drilling machine. Background technique [0002] With the large-scale development of tunnel construction in our country, the number of safety accidents and the number of casualties continue to increase, especially the number of people involved in the collapse of tunnel closures is large and harmful. Existing rescue methods for tunnel closing and landslide construction usually first use a multifunctional drilling rig or a rock drilling rig to open a "life passage" with a diameter of more than 108 mm along the tunnel axis on the side of the collapsed body about 1.0 to 2.5 m away from the tunnel vault. "Transport air and food to the trapped people, and then open the "escape channel" by manually digging pilot pits or rescue drilling rigs, so that the trapped people can be rescued. [0003] Among them, the manual excavation of the pilot pit is to excavate the channel step ...

AI Technical Summary

Problems solved by technology

[0003] Among them, the manual excavation of the pilot pit is to excavate the channel step by step manually, which has low efficiency and slow driving speed; the construction efficiency of the rescue drilling rig is significantly higher than that of the manual excavation of the pilot pit, which mainly adopts the method of casing drilling and screw shaft slag discharge Get through the "escape channel", and then gradually dismantle the screw shaft, leaving the casing as a support in the collapsed body, so that the trapped people can climb out along the casing to be rescued

However, after drilling through the "escape channel", it is necessary to withdraw gradually and dismantle the screw shaft. After the screw shaft is completely removed, the trapped personnel can climb out of the casing. Generally, the depth of the tunnel collapse is 20-30m, and it takes a long time to dismantle it. The shaft will seriously affect the rescue efficiency

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