CN204266948U - Closed spiral guard aperture drilling tool is crept into for weak seam - Google Patents

Closed spiral guard aperture drilling tool is crept into for weak seam Download PDF

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Publication number
CN204266948U
CN204266948U CN201420591782.6U CN201420591782U CN204266948U CN 204266948 U CN204266948 U CN 204266948U CN 201420591782 U CN201420591782 U CN 201420591782U CN 204266948 U CN204266948 U CN 204266948U
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China
Prior art keywords
spiral
guard aperture
drilling rod
blade
closed spiral
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Expired - Fee Related
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CN201420591782.6U
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Chinese (zh)
Inventor
王永龙
孙玉宁
王振锋
宋维宾
韦纯福
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Henan University of Technology
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Henan University of Technology
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Abstract

The utility model discloses one and creep into closed spiral guard aperture drilling tool for weak seam, comprise closed spiral guard aperture drilling rod, spiral leads slag drill bit, the front end that slag drill bit is arranged on closed spiral guard aperture drilling rod led by spiral, and the utility model is mainly used in weakness, broken coal rock layer drilling project.The utility model is novel in design; innovated by helical blade structure; make it have guard aperture function; drilling cuttings is migrated in protected space; from the impact of boring distortion, collapse hole, meanwhile, spiral guard aperture blade is fixed on drilling rod body; the guard aperture space that helical blade is formed and slagging channel combine together, overcome conventional cannula drilling tool drilling process complexity, creep into the problems such as resistance is large, deslagging efficiency is low.

Description

Closed spiral guard aperture drilling tool is crept into for weak seam
Technical field
The utility model belongs to underground coal mine weakness, broken coal rock layer drilling project technical field, is specifically related to one and creeps into closed spiral guard aperture drilling tool for weak seam.
Background technology
Drilling construction is the key technology of underground gas extraction, hypotonic coal seam is bored for difficulty that is soft, broken, combined stresses coupling, affect by factors such as geostatic stress, gas pressure, tectonic stress and drilling rod disturbances, boring deflection is large, to hole easy unstable failure, boring easily blocks, and the frictional resistance that boring blocking section region is formed will affect rotation and the movement of drilling rod, finally cause drilling construction to carry out.What solve soft, broken coal rock layer creeps into problem, resistance two aspect should be crept into from guard aperture and reduction to set about, at present, conventional casing drilling tool, supporting drilling tool is divided into outer tube, interior pipe, small-bore pipe, and after outer tube is stuck, interior pipe uses as outer tube, interior Guan Zhongzai inserts small-bore pipe continuation segmentation and creeps into, practice shows, applies the construction of this drilling tool, most drilling depth only 50 ~ 100m, and this rig corollary equipment is huge, need larger drill site, be difficult to adapt to conditions down-hole, drilling process relative complex, drilling efficiency is on the low side, non-further genralrlization application.Therefore, creep into a difficult problem in order to what solve soft, broken coal rock layer, a kind of novel guard aperture drilling tool and construction technology thereof should be developed.
Utility model content
The utility model is in order to solve weak point of the prior art; innovated by helical blade structure; make it have guard aperture function; drilling cuttings is migrated in protected space; from the impact of boring distortion, collapse hole; overcome conventional cannula drilling tool and creep into the problems such as resistance is large, deslagging efficiency is low, provide a kind of guard aperture effective, be conducive to improving cherry coal rock drilling effect creep into closed spiral guard aperture drilling tool for weak seam.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: creep into closed spiral guard aperture drilling tool for weak seam, comprise closed spiral guard aperture drilling rod, spiral leads slag drill bit, the front end that slag drill bit is arranged on closed spiral guard aperture drilling rod led by described spiral.
Described closed spiral guard aperture drilling rod is made up of closed spiral guard aperture blade, many ribs drilling rod body.
Described closed spiral guard aperture blade is made up of helical-blade top, spiral petiole, helical-blade top width degree is greater than spiral petiole width, helical-blade top and helical-blade handle structure are designed to atresia or porose two kinds of frame modes, helical-blade top couples together, formed and close guard aperture space, form deslagging space between spiral petiole, and spiral petiole is provided with groove.
Described many ribs drilling rod body is made up of drilling rod body, straight line fin bar, straight line fin bar is fixed on drilling rod surface, and with spiral petiole fit depressions, drilling rod body is made up of female fitting, convex joint, round bar body, round bar body two ends are fixed in female fitting, convex joint, many ribs drilling rod body couples together, and its inner chamber forms fluid passage.
Described spiral lead slag drill bit by core bar, lead slag helical blade and form.Core bar one end is provided with core bar joint, the other end arranges cone structure, and core bar joint is connected with closed spiral guard aperture drilling rod, leads slag helical blade and is fixed on core bar, the maximum outside diameter of its blade is greater than closed spiral guard aperture drill pipe diameter, and the maximum cylindrical tangent line of blade forms arc-shaped transition trend.
Creep into closed spiral guard aperture drilling tool for weak seam, comprise the following steps:
1.. test coal seam, job location drilling cuttings figureofmerit, determine Slagoff method, diameter 42mm is beaten to job location and holes, as coal powder quantity of bore S < 6 kg/m, do not need the auxiliary deslagging that ventilates, the spiral petiole of closed spiral guard aperture blade is without the need to providing holes structure; As coal powder quantity of bore S >=6 kg/m, drilling rod afterbody need connect for airduct, and implement the auxiliary deslagging that ventilates, the spiral petiole of closed spiral guard aperture blade needs providing holes structure;
2.. complete rig, slag drill bit led by closed spiral guard aperture drilling rod, spiral, aperture deslagging device installs and be connected, rig needs installation 1 round bur bar, this round bur bar front end connecting sealed formula spiral guard aperture drilling rod, the front end that slag drill bit is arranged on closed spiral guard aperture drilling rod led by spiral;
3.. start rig, rig clamping round bur bar, closed spiral guard aperture drilling rod is given by power transmission, and drive spiral to lead slag drill bit to break coal borer and enter, the slag helical blade of leading that the drilling cuttings that drill bit breaks coal formation is led on slag drill bit core bar by spiral enters in the spiral deslagging space of closed spiral guard aperture drilling rod, rely on the frictional force of helical blade or discharged by drilling cuttings in conjunction with wind-force is auxiliary, drilling cuttings enters aperture deslagging device, realizes depositing dust;
4.. after boring reaches projected depth, the closed spiral guard aperture drilling rod in hole is exited, prepares next drilling construction.
Adopt technique scheme; innovated by helical blade structure; closed spiral deslagging space is connected to form between closed spiral guard aperture blade screw leaf top; make it have guard aperture function; drilling cuttings is migrated in protected space; from the impact of boring distortion, collapse hole; simultaneously; because helical-blade top, spiral petiole are connected; and spiral petiole is fixed on many ribs drilling rod body; guard aperture space and slagging channel are combined together, the innovation of this drilling tool structure, overcome that conventional cannula drilling tool equipment is huge, technique is loaded down with trivial details, creep into the problems such as resistance is large, deslagging efficiency is low.For very weak coal and rock drilling construction, boring deflection is large, and coal powder quantity of bore is high, and it is large to creep into resistance, deslagging efficiency is low, under this condition, can tie in the spiral petiole providing holes of closed spiral guard aperture blade, implement the auxiliary deslagging that ventilates, improve deslagging efficiency, in addition, can on closed spiral guard aperture blade screw leaf top providing holes structure, thus reduce the rotational resistance of drilling rod.Visible, the utility model is used for weak seam and creeps into closed spiral guard aperture drilling tool, for the technical barrier that weak, the broken coal rock layer drilling project of underground coal mine exists, by the innovation of drilling tool structure, for different geological conditions coal seam, form serial guard aperture drilling tool, be conducive to improving weakness, the broken drilling in coal and rock degree of depth and drilling efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of utility model works state;
Fig. 2 is the structural representation of the utility model embodiment one;
Fig. 3 is the utility model closed spiral guard aperture blade view;
Fig. 4 is the right view of Fig. 3;
Fig. 5 is the sectional view of the utility model many ribs drilling rod body;
Fig. 6 is the right view of Fig. 5;
Fig. 7 is that slag drill bit sectional view led by the utility model spiral;
Fig. 8 is that slag drill bit connection layout led by the utility model closed spiral guard aperture drilling rod and spiral;
Fig. 9 is the structural representation of the utility model embodiment two;
Figure 10 is the right view of Fig. 9;
Figure 11 is the structural representation of the utility model embodiment three;
Figure 12 is the right view of Figure 11;
Figure 13 is the structural representation of the utility model embodiment four;
Figure 14 is the structural representation of the utility model embodiment five.
Detailed description of the invention
Embodiment one: as shown in Fig. 1 ~ Fig. 8, of the present utility modelly creeps into closed spiral guard aperture drilling tool for weak seam, and comprise closed spiral guard aperture drilling rod 4, spiral leads slag drill bit 5, the front end that slag drill bit 5 is arranged on closed spiral guard aperture drilling rod 4 led by spiral.Closed spiral guard aperture drilling rod 4 is made up of closed spiral guard aperture blade 9, many ribs drilling rod body 10.Closed spiral guard aperture blade 9 is made up of helical-blade top 901, spiral petiole 902, helical-blade top 901 width is greater than spiral petiole 902 width, helical-blade top 901 and spiral petiole 902 structure design are atresia or porose two kinds of frame modes, helical-blade top 901 couples together, formed and close guard aperture space, form deslagging space between spiral petiole, and spiral petiole is provided with groove 903.Many ribs drilling rod body 10 is made up of drilling rod body 11, straight line fin bar 12, straight line fin bar 12 is fixed on drilling rod body 11 surface, and match with spiral petiole groove 903, drilling rod body 11 is made up of female fitting 1101, convex joint 1103, round bar body 1102, round bar body 1102 two ends are fixed in female fitting 1101, convex joint 1103, many ribs drilling rod body 10 couples together, and its inner chamber forms fluid passage.Spiral lead slag drill bit 5 by core bar 13, lead slag helical blade 14 and form.Core bar 13 one end is provided with core bar joint 1301, the other end arranges cone structure 1302, core bar joint 1301 is connected with closed spiral guard aperture drilling rod 4, leading slag helical blade 14 is fixed on core bar 13, the maximum outside diameter of its blade is greater than closed spiral guard aperture drill pipe diameter, and the maximum cylindrical tangent line of blade forms arc-shaped transition trend.
Creep into closed spiral guard aperture drilling tool for weak seam, comprise the following steps:
1.. test coal seam, job location drilling cuttings figureofmerit, determine Slagoff method.Beat diameter 42mm to job location to hole, as coal powder quantity of bore S < 6 kg/m, do not need the auxiliary deslagging that ventilates, the spiral petiole 902 of closed spiral guard aperture blade 9 is without the need to providing holes structure; As coal powder quantity of bore S >=6 kg/m, drilling rod afterbody need connect for airduct, and implement the auxiliary deslagging that ventilates, the spiral petiole 902 of closed spiral guard aperture blade 9 needs providing holes structure;
2.. complete rig 6, slag drill bit 5 led by closed spiral guard aperture drilling rod 4, spiral, aperture deslagging device 7 installs and be connected, rig 6 needs installation 1 round bur bar 3, this round bur bar 3 front end connecting sealed formula spiral guard aperture drilling rod 4, the front end that slag drill bit 5 is arranged on closed spiral guard aperture drilling rod 4 led by spiral;
3.. start rig 6, rig 6 clamps round bur bar 3, closed spiral guard aperture drilling rod 4 is given by power transmission, and drive spiral to lead slag drill bit 5 to break coal borer and enter, the slag helical blade 14 of leading that the drilling cuttings that drill bit breaks coal formation is led on slag drill bit 5 core bar 13 by spiral enters in the spiral deslagging space of closed spiral guard aperture drilling rod 4, rely on the frictional force of helical blade or discharged by drilling cuttings in conjunction with wind-force is auxiliary, drilling cuttings enters aperture deslagging device 7, realizes depositing dust;
4.. after boring reaches projected depth, the closed spiral guard aperture drilling rod 4 in hole is exited, prepares next drilling construction.
Introduce the utility model embodiment one closed spiral guard aperture drilling tool application principle below:
Innovated by helical blade structure; closed spiral deslagging space is connected to form between closed spiral guard aperture blade 9 helical-blade top 901; make it have guard aperture function; drilling cuttings is migrated in protected space; from the impact of boring distortion, collapse hole; simultaneously; because helical-blade top 901, spiral petiole 902 are connected; and spiral petiole 902 is fixed on many ribs drilling rod body 10; guard aperture space and slagging channel are combined together; the innovation of this drilling tool structure, overcomes that conventional cannula drilling tool equipment is huge, technique is loaded down with trivial details, creep into the problems such as resistance is large, deslagging efficiency is low.For very weak coal and rock drilling construction, boring deflection is large, and coal powder quantity of bore is high, and it is large to creep into resistance, deslagging efficiency is low, under this condition, can tie in spiral petiole 902 providing holes of closed spiral guard aperture blade 9, implement the auxiliary deslagging that ventilates, improve deslagging efficiency, in addition, can on the helical-blade top 901 of closed spiral guard aperture blade 9 providing holes structure, thus reduce the rotational resistance of drilling rod.
Embodiment two: as shown in Figure 9, Figure 10, different from embodiment one is, change the connected mode of tool joint, plug-in type convex joint 1105 is designed to hexagonal structure, plug-in type female fitting 1104 is set to corresponding with plug-in type convex joint 1105 in hexagonal structure, socket connection, can realize the reversion of drilling rod.
Embodiment three: as shown in Figure 11, Figure 12, different from embodiment one is, spiral petiole 902 arranges borehole structure 15, slagging channel is formed between the spiral petiole 902 of closed spiral guard aperture blade 9, apply this structure drilling rod, sebific duct 1 one end is connected for airduct with tunnel, and the other end connects brill tail air feed device 2, implement the auxiliary deslagging that ventilates, improve deslagging efficiency.
Embodiment four: as shown in figure 13, different from embodiment one is, helical-blade top 901 arranges borehole structure 16, reduces the contact area between drill hole wall and closed spiral guard aperture drilling rod 4, thus reduce creeping into and rotational resistance of drilling rod, be conducive to the maximum effect giving full play to rig.
Embodiment five: as shown in figure 14, in conjunction with the embodiments three, embodiment four, spiral petiole 902 arranges borehole structure 15, arranges borehole structure 16 simultaneously, can play the advantage of embodiment three, embodiment 4 two kinds of structure drilling rods simultaneously on helical-blade top 901.

Claims (5)

1. creep into closed spiral guard aperture drilling tool for weak seam, comprise closed spiral guard aperture drilling rod, spiral leads slag drill bit, it is characterized in that: the front end that slag drill bit is arranged on closed spiral guard aperture drilling rod led by described spiral.
2. according to claim 1ly creep into closed spiral guard aperture drilling tool for weak seam, it is characterized in that: described closed spiral guard aperture drilling rod is made up of closed spiral guard aperture blade, many ribs drilling rod body.
3. according to claim 2ly creep into closed spiral guard aperture drilling tool for weak seam, it is characterized in that: described closed spiral guard aperture blade is made up of helical-blade top, spiral petiole, helical-blade top width degree is greater than spiral petiole width, helical-blade top and helical-blade handle structure are designed to atresia or porose two kinds of frame modes, helical-blade top couples together, formed and close guard aperture space, form deslagging space between spiral petiole, and spiral petiole is provided with groove.
4. according to claim 2ly creep into closed spiral guard aperture drilling tool for weak seam, it is characterized in that: described many ribs drilling rod body is made up of drilling rod body, straight line fin bar, straight line fin bar is fixed on drilling rod surface, and with spiral petiole fit depressions, drilling rod body is made up of female fitting, convex joint, round bar body, and round bar body two ends are fixed in female fitting, convex joint.
5. according to claim 1ly creep into closed spiral guard aperture drilling tool for weak seam, it is characterized in that: described spiral lead slag drill bit by core bar, lead slag helical blade and form, core bar one end is provided with core bar joint, the other end arranges cone structure, core bar joint is connected with closed spiral guard aperture drilling rod, leading slag helical blade is fixed on core bar, and the maximum outside diameter of its blade is greater than closed spiral guard aperture drill pipe diameter, and the maximum cylindrical tangent line of blade forms arc-shaped transition trend.
CN201420591782.6U 2014-10-14 2014-10-14 Closed spiral guard aperture drilling tool is crept into for weak seam Expired - Fee Related CN204266948U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104314482A (en) * 2014-10-23 2015-01-28 河南理工大学 Closed type helical hole-protecting drill and using method thereof for drilling of soft coal bed
CN107121536A (en) * 2017-04-26 2017-09-01 河南理工大学 Drilling observation system in overlying strata crack in a kind of three-dimensional similar material simulation experiment
CN107764657A (en) * 2017-11-23 2018-03-06 中南大学 Simulating two-dimensional loads the experimental rig and method of liquid nitrogen cooling mechanical equivalent of light excavation off-load
CN108798541A (en) * 2018-05-21 2018-11-13 河南理工大学 Axial convex ribs cut deslagging drilling rod in the release of hole
CN117404014A (en) * 2023-12-15 2024-01-16 中煤科工集团沈阳研究院有限公司 Liquid injection, solid-liquid and push pipe circulating type directional drilling protection hole device and technology

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104314482A (en) * 2014-10-23 2015-01-28 河南理工大学 Closed type helical hole-protecting drill and using method thereof for drilling of soft coal bed
CN104314482B (en) * 2014-10-23 2017-04-12 河南理工大学 Closed type helical hole-protecting drill and using method thereof for drilling of soft coal bed
CN107121536A (en) * 2017-04-26 2017-09-01 河南理工大学 Drilling observation system in overlying strata crack in a kind of three-dimensional similar material simulation experiment
CN107764657A (en) * 2017-11-23 2018-03-06 中南大学 Simulating two-dimensional loads the experimental rig and method of liquid nitrogen cooling mechanical equivalent of light excavation off-load
CN107764657B (en) * 2017-11-23 2024-01-09 中南大学 Test device and method for simulating two-dimensional loading liquid nitrogen cooling mechanical excavation unloading
CN108798541A (en) * 2018-05-21 2018-11-13 河南理工大学 Axial convex ribs cut deslagging drilling rod in the release of hole
CN117404014A (en) * 2023-12-15 2024-01-16 中煤科工集团沈阳研究院有限公司 Liquid injection, solid-liquid and push pipe circulating type directional drilling protection hole device and technology
CN117404014B (en) * 2023-12-15 2024-02-09 中煤科工集团沈阳研究院有限公司 Liquid injection, solid-liquid and push pipe circulating type directional drilling protection hole device and technology

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Granted publication date: 20150415

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