Soft rock small-hole-diameter deep hole forming device

Abstract

The invention discloses a soft rock small-hole-diameter deep hole forming device and particularly relates to the field of tunnel construction and underground engineering construction. The soft rock small-hole-diameter deep hole forming device comprises a drilling machine. The output end of the drilling machine is in transmission connection with a main drill rod. A drill bit is arranged at one endof the main drill rod. A connecting sleeve is arranged between the main drill rod and the drill bit, and the main drill rod is fixedly connected with the drill bit through the connecting sleeve. A connecting drill rod can also be arranged between the main drill rod and the drill bit. The main drill rod is fixedly connected with the connecting drill rod through a connecting sleeve, and the connecting drill rod is fixedly connected with the drill bit through a connecting sleeve. By means of the soft rock small-hole-diameter deep hole forming device, a YT-28 air-leg rock drill is used for providing the drilling power, the torque meeting the drilling requirement can be provided, multiple rock drills can also be arranged in the limited work space for simultaneous drilling, and the constructionefficiency is improved; in addition, the hole sites and the drilling direction can be adjusted at will; and meanwhile, compared with a conventional linear drill bit or a cross-shaped drill bit, a diamond compact anchor rod drill bit has a higher drilling speed under the soft rock condition.

Description

technical field [0001] The invention relates to the field of tunnel construction and underground engineering construction, more specifically, the invention relates to a soft rock small-diameter deep hole forming equipment. Background technique [0002] In the construction of soft rock tunnels, the drilling speed has a great influence on the construction progress. Therefore, the selection and optimal combination of drilling rigs, drill pipes, drill bits and other supporting equipment are of great significance. At present, three-boom rock drilling rigs, C6 drilling rigs, and bolter drilling rigs are used in domestic tunnel construction. However, due to the limitation of the working space, the number of large-scale machinery drilling at the same time is small, and the drilling direction is difficult to control. The depth of the ordinary YT-28 drilling rig Shallow, mine rock bolter horizontal drilling is not suitable for slag discharge, and it is difficult to be suitable for sma...

AI Technical Summary

Problems solved by technology

At present, three-arm rock drilling rigs, C6 drilling rigs, and bolter drilling rigs are used in domestic tunnel construction. However, due to the limitation of operating space, the number of large-scale machinery drilling at the same time is small, and the drilling direction is difficult to control. The drilling depth of ordinary YT-28 drilling rigs Shallow, mine rock bolter horizontal drilling is not suitable for slag discharge, and it is difficult to be suitable for small-diameter deep hole formation in soft rock conditions

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