Judging method for vertical shaft drilling process dynamic regulation on basis of slag material analysis

Abstract

The invention discloses a judging method for vertical shaft drilling process dynamic regulation on the basis of slag material analysis. The method comprises the following steps of: according to the geological condition provided through geological exploration, using a raise boring machine for performing guide hole drilling from top to bottom; regularly fishing drilled rock slag; primarily judging the vertical shaft lithologic conditions of different depth sections through the sampling and analysis on the fished rock slag; comparing the judging result with the geological condition provided through geological exploration; selecting process parameters for reaming drilling in different depth sections according to the judged vertical shaft lithologic conditions of different depth sections; after a guide hole is drilled through, changing a raise boring machine drill bit; and performing reaming from bottom to top according to the selected drilling process parameters. In the reaming process, through the analysis on the ingredients of slag materials and the comparison analysis on the actual slag discharge quantity and the normal calculation quantity, the judging reliability on the actual geological condition is improved, so that the process parameters such as the torque, the thrust and the rotating speed during drilling can be dynamically regulated in time; and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of vertical shaft raise drilling rig construction, in particular to a determination method for dynamic adjustment of vertical shaft drilling technology based on slag material analysis. Background technique [0002] Our country is increasing the construction of transportation and energy infrastructure. There are more and more long tunnels and roadways being built. Due to the limitation of the ventilation distance of the main tunnel, the vertical shaft is usually used as an auxiliary ventilation and rescue channel facility. In particular, 150-500m deep small-diameter shafts are currently being designed more and more in the construction of railways, highways, water conservancy, and mines. Small-diameter vertical shafts have small space and difficult manual operations. Usually, the raising drilling method is used for excavation. First, a 20-30cm pilot hole is drilled from top to bottom to the lower horizontal roadway. Aft...

AI Technical Summary

Problems solved by technology

During the construction of existing shafts in China, the excavation process is often formulated according to the geological conditions provided by the geological survey design, or the personnel are used to go down and observe when the space is large enough. Material management analysis is used to judge the geological conditions. From the beginning to the end of drilling, most of them are carried out according to the geological conditions provided by the geological survey design and fixed process parameters, which cannot effectively adapt to the actual geological changes, let alone dynamically adjust the drilling process.

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