JPS5894587A - Drilling method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] This method involves drilling a hole in an expansive rock using a rock drilling machine. When pulling out the mud, the pit is stuck to the ground and the drilling rock can no longer rotate, making it impossible for the pit and rod to come out, or the pipes will not move forward.When the situation is severe, construction work may not be possible. This invention is intended to eliminate the above-mentioned problems and make construction work smoother.If you look at this in a diagram, 1 is the ground, 11 is the rake back machine, 2 is the leader, 5 is the O-nd, 6 is a guide 7 is a pit, 3 is a striking tip attached to the side of the pit 7, 9 is a wood discharge port in the advancing direction, 8 and 10 are wood discharge ports in the opposite direction, and 11 is a rock drill. It is supported by boom No. 4. No. 12 in the JR2 diagram is attached with a cutting tip attached to the side of pit 7. During excavation, while pulling out the rod, the pit is pressed against the earth due to the bulge of the earth. However, the ground is scoured in the direction of the exit by the jet water of 8, and the ground is scoured in the direction of the exit.
Since the ground can be cut by rotating the cutting tip, even if the ground swells and the hole becomes blocked, the injection port 10 provided on the rod and attached to the pit. Due to the squeezing action caused by the discharge of air from the injection port 8 and the digging action caused by the rotation of the cutting chiwap 12,
It becomes easy to send in and pull out rock drill holes and pits, making it possible to drill holes.

[Brief explanation of the drawing]

Figure 1 is a side view of this invention. Figure 2 shows an example of the pit and Orad used in this invention. 1. Jizan 2.1! <Kouki Leader 3. Hitting tip 4e Poom 5.0-/do 6・Guide 7・Pit 8・9・Spray port 10. 'jl ejection port 11. Drilling Iwatsuki 12, Cutting Cheap

Claims (1)

[Claims] 1) 2 (In a method of drilling a general-purpose pit by giving impact % rotation and feed speed movement, a discharge port or injection port that discharges into the pit in the opposite direction to the drilling direction is provided) 2) In the drilling method where the hole is drilled while performing a rotational movement, the discharge is discharged from the hole opening 7 in the direction opposite to the direction of the hole being drilled. Rui is the etiquette of looking into the nozzle and making a hole by spraying the wood. 3) Drilling a hole while rotating (I7) (In the hole method, a hole is discharged or jetted on the opposite side of the drilling direction, and a cutting chip is installed on the side of the pit and the hole is drilled while rotating.) 2. A method of etiquette that is characterized by the following. 4) Place the hole in the drill bit or rod by checking the nozzle and injecting high-pressure air in the direction opposite to the hole. Saku etiquette is characterized by: