Slag tapping system and method for full face tunnel boring machine of deep vertical shaft

Abstract

The invention provides a slag tapping system and method for a full face tunnel boring machine of a deep vertical shaft. The slag tapping system comprises a slurry discharge system, a slurry separation station, a slurry feed system and a muck improving pumping system, wherein the slurry discharge system is composed of a slurry discharge pump and a slurry discharge pipe; a lower opening of the slurry discharge pipe stretches into a muddy water cabin at the bottom of a cutter, an upper opening of the slurry discharge pipe is connected with an upper inlet of the slurry separation station; two outlets are arranged on the lower portion of the slurry separation station, one outlet is connected with the slurry feed system, and the other outlet is connected with the muck improving pumping system; the slurry feed system is composed of a slurry feed pump and a slurry feed pipe which is connected with the muddy water cabin; and the muck improving pumping system comprises a muck crushing, improving and stirring device, a muck conveying pump and a slag discharge pipe which are sequentially connected, one end of the muck crushing, improving and stirring device is connected with a slag outlet of the slurry separation station, and the outlet end of the slag discharge pipe leads to the outside of the vertical shaft. Devices of the system are not affected by the depth of the vertical shaft, continuous tapping can be guaranteed, the discharge efficiency of muck is greatly improved, and therefore the deep vertical shaft building speed is accelerated.

Description

technical field [0001] The invention relates to the technical field of deep shaft engineering construction, in particular to a slag discharging system and method for a deep shaft full-face tunneling machine. Background technique [0002] With the deep development of coal mining in Shaanxi, Shanxi, Inner Mongolia, Xinjiang and other regions, more than half of the new mines are developed by vertical shafts. At present, according to different geological conditions, the existing shaft construction methods include drilling method, grouting method, caisson method, freezing method, blasting method, etc., but the construction efficiency is generally slow. Moreover, with the gradual increase of the depth of the deep shaft, the discharge efficiency of the muck will be the key factor restricting the construction speed of the full-face tunneling machine of the deep shaft. [0003] The compressed gas reverse circulation method is used for mud slag removal in the drilling method, and the...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a slag discharge system and method for full-face tunneling machines in deep shafts, so as to solve the technical problem that the efficiency of discharging slag decreases with the increase of shaft depth

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