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Main equipment for drilling in tunnels
Tunnel drilling equipment mainly include drilling rig and pump, the pump and the surface is the same, often using reciprocating pump, but compared to drilling rig and surface has the following special requirements: drill by the host, console, power unit and four major part tank, hose connection between each other.
When drilling into the upper hole, it is necessary to excavate shallow holes in the floor of the tunnel, and when the lifting operation is carried out, the faucet and shaft drill pipe should be put into the shallow pit.
In order to reduce noise and improve production efficiency, the drilling pump is often installed in a small chamber.
The equipment layout of deep hole and shallow hole is different:
The equipment layout is shown in the shallow hole.
The channel between the tunnel and the equipment should be on the non-operating side. The left side of the drill and the end of the end should be left 0.7 meters. The operator should stay 1.8 meters. The base wood is fixed in the tunnel with four supporting columns, and the vertical column and the roof of the pit are hardwood. Gentle inclined holes in a horizontal hole, to protect the active tool, available slot diameter of 127 mm casing made of special protection, the front end of the groove weld has two legs, the height is adjustable and back-end fixed to the column above, for lifting work, the protective tank can easily be moved to the side.
The equipment layout is shown when drilling deep hole.
2-2 special tunnel rig installation.
Tunnel special drill needs to excavate the chamber size small, the specific chamber specification dimensions such as table, some small equipment also directly in the tunnel drilling.
, Z46210, Z75 Z46150-1 type drill is to rely on pillar parts support drill, tally up front pillar when installation, the distance to the orifice and, in turn, installation, up and down in the pillar of the end all pads thick wood or sleepers, bottom with the cement fixation.
Z90-1, z90-2, z90-3 series drilling machines.
The Z90 series drilling rig can be supported by pillar parts, and can be used with hydraulic tower parts, and can be used in conjunction with the rig site. The chuck on the front end of the rig has a bolt, which can be used to hold together the pores that are drilled in the rock wall and fixed with cement. Two other screws can be fixed on the palm surface, forming a stable structure of two jacks, which avoids the swing of the drill, and the specific installation is shown in the figure. This kind of fixed method does not use the prop, therefore is not restricted by the tunnel space, the rig is fixed directly on the palm surface.
Pump output
Horizontal hole, the back empty into the space and time to flush the condition is very different with the vertical holes, bit end almost won't have rock powder layer or rarely, rock powder discharge from bit lip surface rapidly, therefore the diamond drill bits wear small. Some researchers have suggested that in low and medium abrasives, the diamond drilling efficiency determines and the amount of flushing fluid, and the relationship between the circular velocity of the drill bit and the amount of unit washing liquid is obtained:
Elevation hole: Q= 0.6v; Oblique hole Q = 1.56 V
Type: Q - bit end flush amount per square centimetre, L/min. C ㎡ V - bit weeks linear velocity of m/s.
When drilling into the upper hole, it is necessary to excavate shallow holes in the floor of the tunnel, and when the lifting operation is carried out, the faucet and shaft drill pipe should be put into the shallow pit.
In order to reduce noise and improve production efficiency, the drilling pump is often installed in a small chamber.
The equipment layout of deep hole and shallow hole is different:
The equipment layout is shown in the shallow hole.
The channel between the tunnel and the equipment should be on the non-operating side. The left side of the drill and the end of the end should be left 0.7 meters. The operator should stay 1.8 meters. The base wood is fixed in the tunnel with four supporting columns, and the vertical column and the roof of the pit are hardwood. Gentle inclined holes in a horizontal hole, to protect the active tool, available slot diameter of 127 mm casing made of special protection, the front end of the groove weld has two legs, the height is adjustable and back-end fixed to the column above, for lifting work, the protective tank can easily be moved to the side.
The equipment layout is shown when drilling deep hole.
2-2 special tunnel rig installation.
Tunnel special drill needs to excavate the chamber size small, the specific chamber specification dimensions such as table, some small equipment also directly in the tunnel drilling.
, Z46210, Z75 Z46150-1 type drill is to rely on pillar parts support drill, tally up front pillar when installation, the distance to the orifice and, in turn, installation, up and down in the pillar of the end all pads thick wood or sleepers, bottom with the cement fixation.
Z90-1, z90-2, z90-3 series drilling machines.
The Z90 series drilling rig can be supported by pillar parts, and can be used with hydraulic tower parts, and can be used in conjunction with the rig site. The chuck on the front end of the rig has a bolt, which can be used to hold together the pores that are drilled in the rock wall and fixed with cement. Two other screws can be fixed on the palm surface, forming a stable structure of two jacks, which avoids the swing of the drill, and the specific installation is shown in the figure. This kind of fixed method does not use the prop, therefore is not restricted by the tunnel space, the rig is fixed directly on the palm surface.
Pump output
Horizontal hole, the back empty into the space and time to flush the condition is very different with the vertical holes, bit end almost won't have rock powder layer or rarely, rock powder discharge from bit lip surface rapidly, therefore the diamond drill bits wear small. Some researchers have suggested that in low and medium abrasives, the diamond drilling efficiency determines and the amount of flushing fluid, and the relationship between the circular velocity of the drill bit and the amount of unit washing liquid is obtained:
Elevation hole: Q= 0.6v; Oblique hole Q = 1.56 V
Type: Q - bit end flush amount per square centimetre, L/min. C ㎡ V - bit weeks linear velocity of m/s.
Qingdao INOVO drilling machine
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mailbox：baojun.ding@inovoind.com
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