CN105780783A - Trenching construction method of large-inclination angle steep rock - Google Patents
Trenching construction method of large-inclination angle steep rock Download PDFInfo
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- CN105780783A CN105780783A CN201610283152.6A CN201610283152A CN105780783A CN 105780783 A CN105780783 A CN 105780783A CN 201610283152 A CN201610283152 A CN 201610283152A CN 105780783 A CN105780783 A CN 105780783A
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- drill bit
- rock
- grinding
- drill
- grooving
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- 239000011435 rock Substances 0.000 title claims abstract description 110
- 238000010276 construction Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 claims abstract description 39
- 238000005553 drilling Methods 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 42
- 239000010959 steel Substances 0.000 claims description 42
- 231100000241 scar Toxicity 0.000 claims description 31
- 210000000078 claw Anatomy 0.000 claims description 30
- 239000000428 dust Substances 0.000 claims description 9
- 230000035939 shock Effects 0.000 claims description 9
- 239000006096 absorbing agent Substances 0.000 claims description 7
- 238000013016 damping Methods 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- 239000002244 precipitate Substances 0.000 description 9
- 238000013461 design Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000007664 blowing Methods 0.000 description 4
- 206010060904 Freezing phenomenon Diseases 0.000 description 3
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a trenching construction method of large-inclination angle steep rock. The trenching construction method comprises the steps of carrying out drilling treatment on a covering layer of the steep rock, and when the bottom of a drilling main hole is close to or near an inclination rock surface of the steep rock, lifting a drill; after the drill is lifted, arranging a trenching locating frame at the hole opening part of a trench formed after drilling, so that the drill is guided to move to a relatively high part of the rock surface through the trenching locating frame; and after the drill is guided to the relatively high part of the rock surface through the trenching locating frame, enabling the drill to grind and drill from up to down in the vertical direction, so that the trenching construction is carried out on the inclination rock surface of the steep rock till the rock surfaces formed after drilling chiseling are in the same horizontal plane. According to the method, the trenching construction is carried out through adopting the friction type drill of which the flat bottom grinds the steep rock, so that the contact surface of the drill and the steep rock is enlarged, and the trenching effect is improved; and besides, the drill has a guide function during the trenching process, so that the construction effect is improved, and the perpendicularity of the trench is guaranteed.
Description
Technical field
The present invention relates to construction engineering technical field, particularly relate to a kind of abrupt slope rock construction method with high inclination-angle.
Background technology
To in ground-connecting-wall trenching construction; it is frequently encountered the high inclination-angle abrupt slope ground consisting of hard rock that inclination angle is close to 45 degree; in prior art; frequently with the grooving facility with tooth type drill bit such as cross bit; in construction; convex corner teeth bottom drill bit contact with abrupt slope hard rock; by impulsive force pore-creating in basement rock; during pore-creating, teeth often fracture; both affect efficiency of construction, waste again former material, simultaneously; the high-stroke dead-weight grooving mode of prior art cannot ensure the perpendicularity of grooving, and deviation also very easily occurs aperture location measure.
Summary of the invention
The purpose of the present invention is contemplated to solve the problems referred to above, a kind of high inclination-angle abrupt slope rock forming construction method thereof is provided, it adopts the friction-type drill bit of flat grinding abrupt slope rock to carry out trenching construction, add the contact surface of drill bit and abrupt slope rock, improve the work efficiency of grooving, and, drill bit has guide effect in grooving process, both improve construction effect, in turn ensure that the perpendicularity of grooving.
For realizing the above-mentioned purpose of the present invention, the present invention provides a kind of high inclination-angle abrupt slope rock forming construction method thereof, comprising:
The cover layer of abrupt slope rock is carried out boring process, bottom Drilling main aperture close to or when having reached the inclined rock base of abrupt slope rock, promote drill bit；
After promoting drill bit, the aperture place of grooving after piercing disposes grooving locating rack, in order to guide drill bit to move to scar higher part position by grooving locating rack；
Drill bit is guided to scar higher part position by grooving locating rack, makes drill bit vertically grinding from top to bottom creep into, in order to the inclined rock base of abrupt slope rock is carried out trenching construction, until the scar formed after Drilling is in same level.
Wherein, described grooving locating rack includes: for being set up in the supporting seat of the level at described aperture place；It is respectively arranged in a pair fixing plate of supporting seat both sides, a pair fixing plate offers the corresponding multiple draw-in grooves in position or hole clipping；Its two ends are for being respectively disposed on the motion bar in the draw-in groove or hole clipping fixing plate a pair；Wherein, the length bearing of trend of described motion bar and the length bearing of trend in described aperture are parallel.
Further, described grooving locating rack also includes the shock absorber part for damping that is placed on described motion bar.
Wherein, guide drill bit to move to scar higher part position by described grooving locating rack, prop up the step of the steel wire rope for drawing described drill bit of grooving rig including the motion bar adopting described grooving locating rack.
Further, guide drill bit to move to scar higher part position by described grooving locating rack, also include the position by changing described motion bar, the step of the relative scar position that changes described drill bit.
Wherein, described drill bit is that cross bores or friction-type drill bit.
Wherein, described friction-type drill bit includes the drill body of drillstock, the described drillstock bottom of connection, its top, and described drill body includes: its top connects the body of described drillstock bottom；It is arranged on multiple grinding subassemblies of described body bottom；Being arranged on the multiple discharge troughs for discharging rock dust on described body outer wall, the plasma discharge mouth of each of which discharge trough is adjacent with two grinding subassemblies in the plurality of grinding subassembly；It is arranged on the multiple arc bodies for closing off each grinding subassembly part of body bottom.
Wherein, described grinding subassembly includes: be arranged at a pair first grinding blocks of described body bottom；It is arranged at described body bottom and is positioned at the second grinding block inside a pair first grinding blocks；Wherein, described second grinding block and the pair of first grinding block are Y-shaped distribution.
Wherein, described body bottom portion has at least three claw, and each described grinding subassembly is placed on a claw.
Wherein, each described arc body is arranged at the edge of a claw of described body.
Wherein, utilize friction-type drill bit the inclined rock base of abrupt slope rock is carried out Drilling process time, also include slurry conveyed in the slotted eye formed towards Drilling and make the step of the circulation of mud in groove.
Compared with prior art, the abrupt slope rock construction method of the embodiment of the present invention has the advantage that
1), the method for the present embodiment, adopt grooving locating rack to guide drill bit to construct to scar higher part position, it is ensured that the perpendicularity of grooving, when grooving is crept in lithostratigraphy, big abrupt slope, adopt the mode of creeping into of short stroke, high frequency time, improve drilling efficiency, accelerating construction progress, improves production efficiency；
2), in the method for the present embodiment, adopt friction-type drill bit, it has multiple grinding subassembly, adopt the mode of flat surface grinding to abrupt slope rock trenching construction by multiple grinding subassemblies, increase the contact area between grinding subassembly and abrupt slope rock inclined rock base, make drill bit that the impulsive force of rock mass is uniform, the process of grinding pore-creating not easily occurs bit freezing phenomenon, there is the effect of pore-creating correction；
3), the friction-type drill bit of the present embodiment, favose free face can be formed between multiple grinding subassemblies and multiple arc body, crushing thus being beneficial to pore-forming when rock mass is crept into by drill bit, improving and creeping into work efficiency, accelerating construction progress；
4), the friction-type drill bit of the present embodiment, the reserved mouth of a river is left between the first grinding block and the second grinding block, and the reserved mouth of a river is connected with plasma discharge mouth, so that the rock dust even disintegrating slag of grinding block that are formed during drill bit grinding rock mass can be discharged in time without accumulating at the bottom of hole, thus without forming thicker precipitate at the bottom of hole, precipitate is repeated creeping into by impulsive force and the drill bit of avoiding precipitate cushioned drill bit, improves the work efficiency of creeping into of drill bit, improves construction speed；
5), the friction-type drill bit of the present embodiment, the lateral surface of a pair corresponding first grinding blocks is closed by arc body, and the external diameter of arc body is identical with the radius of corresponding claw, therefore, can ensure that when drill bit creeps into rock mass pore-creating, the edge in hole round and smooth and without teeth resistance, improve efficiency of construction when creeping into, reduce the unproductive time repairing hole, it is ensured that construction quality；
6), the friction-type drill bit of the present embodiment, each grinding block is made up of the high-strength alloy of wear and shock-resistant, will not falling slag easily when grinding rock mass or broken, drill bit is keeped in repair, boring is carried out deslagging, repaiied the unproductive time in hole by minimizing, improves and creeps into work efficiency；
7), the friction-type drill bit of the present embodiment, other parts at drill body or drill bit are provided with hanger, by wearing the steel wire rope for drawing drill bit in hanger, it is prevented that drill bit is when carrying out high speed impact to rock mass, there is brill situation, improve construction safety and work efficiency.
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is the front view of the friction-type drill bit of the embodiment of the present invention；
Fig. 2 is the upward view of friction-type drill bit shown in Fig. 1；
Fig. 3 is the flow chart of high inclination-angle abrupt slope provided by the invention rock forming construction method thereof；
Fig. 4 is the front view of the grooving locating rack of the embodiment of the present invention；
Fig. 5 is the upward view of grooving locating rack shown in Fig. 4；
Fig. 6 is the left view of grooving locating rack shown in Fig. 4；
Fig. 7 is the structural representation that the airduct leading truck of the embodiment of the present invention is fixed on steel wire rope；
Fig. 8 is part A enlarged drawing in Fig. 7；
Fig. 9 is the airduct guide body structure schematic diagram (not shown connecting rod) of the embodiment of the present invention.
Detailed description of the invention
As it is shown on figure 3, be the flow chart of high inclination-angle abrupt slope provided by the invention rock forming construction method thereof, as seen from the figure, the method includes:
The cover layer of abrupt slope rock is carried out boring process, bottom Drilling main aperture close to or when having reached the inclined rock base of abrupt slope rock, promote drill bit；
After promoting drill bit, the aperture place of grooving after piercing disposes grooving locating rack, in order to guide drill bit to move to scar higher part position by grooving locating rack；
Drill bit is guided to scar higher part position by grooving locating rack, makes drill bit vertically grinding from top to bottom creep into, in order to the inclined rock base of abrupt slope rock is carried out trenching construction, until the scar formed after Drilling is in same level.
Concrete, the method for the present invention comprises the steps:
Step 1, cover layer to abrupt slope rock carry out boring process, bottom Drilling main aperture close to or when having reached the inclined rock base of abrupt slope rock, promote drill bit.
When cover layer being carried out boring and processing, guarantee that cover layer boring hole deviation meets designing requirement, often creep into 3-5 rice and measure a hole deviation, incompetent bed often creeps into 1-3 rice and measures a hole deviation, find deflection, the method adopting prior art is revised in time, bottom Drilling main aperture close to or when having reached the inclination bedrock surface of abrupt slope rock, promote drill bit.
After step 2, lifting drill bit, it is possible to the aperture place of the grooving formed after piercing disposes grooving locating rack, in order to guide drill bit to move by grooving locating rack, and make drill bit move the scar higher part position to inclined rock base.
Wherein, drill bit is guided to move to scar higher part position by grooving locating rack, the step of the steel wire rope for drawing drill bit of grooving rig is propped up including the motion bar adopting grooving locating rack, and by changing the position of motion bar, changing the step of the relative scar position of drill bit.
As shown in Fig. 4, Fig. 5, Fig. 6, the grooving locating rack that the present embodiment adopts includes: for being erected at the supporting seat of the level at the aperture place of grooving, this supporting seat include its two ends be placed on a pair vertical pole 21 at aperture place vertical with a pair vertical pole 21 be connected and be positioned at a pair cross bar 24 of vertical pole side, 25, be respectively arranged in a pair montant 27 of a pair vertical pole 21 two bottom sides, wherein, the spacing of a pair montant 27 is identical with the width in aperture, so that holding is in hole wall both sides, make whole supporting seat stable be fixed on aperture place；It is respectively arranged in a pair fixing plate 23 of supporting seat both sides, namely, each vertical pole 21 is installed a fixing plate 23, and the length bearing of trend of fixing plate 23 is identical with the length bearing of trend of vertical pole 21, offering the corresponding multiple draw-in grooves in position or hole clipping respectively on a pair fixing plate 23, during design, fixing plate 23 can adopt plank to make, steel plate can also be adopted to make, each fixing plate offers multiple draw-in groove or hole clipping side by side；Its two ends are for being respectively disposed on the motion bar 22 in the draw-in groove or hole clipping fixing plate a pair；Wherein, the length bearing of trend of motion bar 22 and the length bearing of trend in aperture are parallel.
During use, grooving locating rack is placed in aperture place, make drill bit in motion bar 22 and a pair cross bar near motion bar 22 a cross bar (i.e. cross bar 24) space, and be used in draw drill bit steel wire rope be against on motion bar 22.According to drill bit inclined rock base crept into situation, when needing to make the drill bit scar higher position towards inclined rock base to move, change the position of motion bar 22 opposing fixed plate, namely, to move in the motion bar 22 draw-in groove from the corresponding scar lower of fixing plate or hole clipping to another draw-in groove or hole clipping of corresponding scar higher position, steel wire rope is driven to move towards scar higher position by motion bar 22, so that drill bit moves to scar higher part position, in order to scar is carried out grinding and creeps into by drill bit.
Further, grooving locating rack, except above-mentioned each component, also includes the shock absorber part 26 for damping being placed on motion bar 22.This shock absorber part 26 has damping spring, during installation, shock absorber part 26 should be made to be fixed on the middle part of motion bar 22, so that steel wire rope contacts with shock absorber part 26, thus in the process that drill bit creeps into, reducing drill bit and the steel wire rope vibration influence to motion bar 22 and whole grooving locating rack, it is ensured that construction safety.Additionally, this shock absorber part 26 can also adopt the structure with shock-absorbing function of prior art, its structure is not described in detail at this.
It should be noted that the size of each component of grooving locating rack of the present embodiment can be determined according to practical situation.
Step 3, guided to behind scar higher part position, making drill bit vertically grinding from top to bottom creep into, in order to the inclined rock base of abrupt slope rock is carried out trenching construction by grooving locating rack when drill bit, until the scar formed after Drilling is in same level.
When drill bit is guided to inclined rock base higher part position by grooving locating rack, adopting and have the percussive drill of fixing short stroke that scar is constructed, during construction, stroke is generally 0.5-0.8 rice, and frequency of impact is per minute less than 25 times.When creeping into, drill bit vertically grinding from top to bottom is crept into, and the inclined rock base of abrupt slope rock is carried out trenching construction, until the scar formed after Drilling is in same level.When inclined rock base is ground to horizontal plane, it may be necessary to move drill bit through one or many, time mobile, by changing the position of motion bar 22 opposing fixed plate, reach to change the purpose of the position of described drill bit relative tilt scar.
Adopt short stroke, high frequency time creep into mode, both improve construction effect, in turn ensure that the perpendicularity of grooving.
Wherein, utilize friction-type drill bit the inclined rock base of abrupt slope rock is carried out Drilling process time, also include slurry conveyed in the slotted eye formed towards Drilling and make the step of the circulation of mud in groove.
Wherein, the method that slurry conveyed can adopt prior art in slotted eye, and make the method that the mud being delivered in groove is circulated comprise the steps:
Before abrupt slope rock is excavated, one end of ajutage is fixed on the steel wire rope for drawing the drill bit that abrupt slope rock creeps into grooving, the other end of ajutage is connected with air compressor machine, in order to the compression air that air compressor machine produces can pass through ajutage and send in groove；
When being fixed after on a steel cord one end of ajutage, utilize drill bit to abrupt slope rock percussion drilling from top to bottom, in order to ground-connecting-wall grooving after pore-creating；
When abrupt slope rock is crept into grooving by drill bit, abrupt slope rock is made to be ground into the boring mud of substantial amounts of rock dust class, therefore, along with rock mass is crept into grooving by drill bit, by the method for prior art to formed groove in continual supply mud, simultaneously, blown in groove by air compressor machine and ajutage, in order to blow the mud in groove and boring mud by compressing air so that mud is suspended in mud at groove internal recycle, boring mud, that is, mud and boring mud will not be deposited at the bottom of hole；
By air compressor machine and ajutage to while air-supply in groove, drill bit is pointed to the rock mass below boring mud to be continued to creep into, boring mud owing to being formed when drill bit early stage creeps into rock mass is suspended in mud and is not deposited at the bottom of hole, therefore, when drill bit continues the rock mass of lower section is crept into, the bottom of drill bit can be passed boring mud and directly contact rock mass, thus will not the boring mud that early stage is formed being crept into when continuing to creep into, effectively prevent drill bit and sedimentary repetitions the such as boring mud are crept into；
Wherein, one end of ajutage is fixed on a steel cord, it is by one end of ajutage is fed through airduct leading truck, again by fixing for airduct leading truck method on a steel cord, ajutage is made to move up and down along with the drill bit of rope traction by airduct leading truck, and when bit, ajutage will not along with bit, ajutage is effectively prevented to be wound around on a steel cord, in addition, creep in the process of rock mass at drill bit, under the effect of airduct leading truck, the position of the relative drill end in ajutage bottom remains unchanged, the air-supply effect making ajutage is always maintained at constant, also ajutage is avoided to be wrapped on drill bit.
Wherein, as shown in Figure 7, the airduct leading truck 14 provided for the embodiment of the present invention is placed in for drawing the structural representation on the steel wire rope 11 of drill bit of drilling machine 12, Fig. 8 is the part A enlarged drawing shown in Fig. 7, from Fig. 7, Fig. 8, steel wire rope 11 bottom be fed through the hanger for lifting drill bit backward on turn back formation back-turning section, and the vertical section not being fed through hanger of back-turning section and steel wire rope is parallel, utilize multiple buckle 13 disposed up and down back-turning section and the vertical section of steel wire rope to be locked, and airduct leading truck 14 is sleeved on outside back-turning section and vertical section.
Concrete, as shown in Figure 8, Figure 9, the airduct leading truck 14 that the embodiment of the present invention provides includes: for being sleeved on for drawing the support body on the steel wire rope 11 of drill bit；It is arranged on outside support body and connected arc frame 18 together；Wherein, ajutage 19 is set between arc frame 18 and support body.
Wherein, support body includes: for being sleeved on the U-tube 15 outside the back-turning section of steel wire rope 11 and vertical section；The opening being arranged at U-tube 15 and the connecting rod 17 removably connected with U-tube 15, outside being fixedly mounted on back-turning section and the vertical section of steel wire rope by described U-tube 15.Preferably, the end at project in parallel out two cantilever arms of U-tube 15 is respectively provided with the collar, and the two ends of connecting rod 17 are fed through the collar of correspondence respectively, are separately fixed on the collar at the two ends of connecting rod 17 again through a pair nut 16.It is of course also possible to the end at two cantilever arms of U-tube 15 is respectively provided with through hole, and the two ends of connecting rod 17 are fed through a pair through hole respectively, are then separately fixed on cantilever arm at the two ends of connecting rod 17 again through a pair nut.
And arc frame 18 is close, with the curved portions of U-tube 15, the fixed mount that the part being connected is curved, ajutage 19 is set between the curved portions of arc frame 18 and U-tube 15, i.e. ajutage 19 and steel wire rope 11 be arranged in parallel.During design, the radius radius slightly larger than ajutage 19 of arc frame 18 should be made, in order to ajutage 19 slightly gap after being fed through arc frame 18 and between arc frame 18 so that ajutage 19 can rotate in arc frame 18.And in order to prevent ajutage 19 from deviating from arc frame 18, the bottom of ajutage 19 can arrange a pair annular solid protruding from ajutage 19 outer wall, the radius of a pair annular solid is all higher than the radius of arc frame 18, and arc frame 18 is between a pair annular solid, so that ajutage 19 not only can move up and down along with steel wire rope under the effect of airduct leading truck 14, but also can rotate relative to airduct leading truck 14.Namely, ajutage 19 can move up and down along with the drill bit of rope traction, and when bit, ajutage 19 along with bit, will effectively prevent ajutage 19 to be wound around on a steel cord, in addition, creep in the process of abrupt slope rock at drill bit, the position of the relative drill end in ajutage 19 bottom remains unchanged so that the air-supply effect of ajutage 19 is always maintained at constant, also avoids ajutage to be wrapped on drill bit.
Wherein, when one end of ajutage 19 is fixed on steel wire rope 11, described one end (i.e. the bottom of ajutage 11) of ajutage 11 is positioned at the top (as shown in Figure 7) of drill bit and steel wire rope 11 junction, and the bottom of ajutage 19 is placed in airduct leading truck 14.Drawn by great many of experiments, ajutage 19 bottom from the distance of drill end be 1.2-1.8m time, best results of blowing.
The present invention is by the drill bit airduct leading truck for being set with ajutage installed above, ajutage is prevented to be wrapped on drill bit, improve production safety and efficiency of construction, and by blowing while creeping at drill bit, boring mud etc. can be effectively prevented to be deposited at the bottom of hole, avoid drill bit to repeat to creep into boring mud, improve drilling efficiency.
The airduct leading truck 14 provided for the embodiment of the present invention is placed in for drawing the structural representation on the steel wire rope 11 of drill bit of drilling machine 12, Fig. 4 is the part A enlarged drawing shown in Fig. 3, from Fig. 3, Fig. 4, steel wire rope 11 bottom be fed through the hanger for lifting drill bit backward on turn back formation back-turning section, and the vertical section not being fed through hanger of back-turning section and steel wire rope is parallel, utilize multiple buckle 13 disposed up and down back-turning section and the vertical section of steel wire rope to be locked, and airduct leading truck 14 is sleeved on outside back-turning section and vertical section.
Concrete, as shown in Fig. 4, Fig. 7, the airduct leading truck 14 that the embodiment of the present invention provides includes: for being sleeved on for drawing the support body on the steel wire rope 11 of drill bit；It is arranged on outside support body and connected arc frame 18 together；Wherein, ajutage 19 is set between arc frame 18 and support body.
Wherein, support body includes: for being sleeved on the U-tube 15 outside the back-turning section of steel wire rope 11 and vertical section；The opening being arranged at U-tube 15 and the connecting rod 17 removably connected with U-tube 15, outside being fixedly mounted on back-turning section and the vertical section of steel wire rope by described U-tube 15.Preferably, the end at project in parallel out two cantilever arms of U-tube 15 is respectively provided with the collar, and the two ends of connecting rod 17 are fed through the collar of correspondence respectively, are separately fixed on the collar at the two ends of connecting rod 17 again through a pair nut 16.It is of course also possible to the end at two cantilever arms of U-tube 15 is respectively provided with through hole, and the two ends of connecting rod 17 are fed through a pair through hole respectively, are then separately fixed on cantilever arm at the two ends of connecting rod 17 again through a pair nut.
And arc frame 18 is close, with the curved portions of U-tube 15, the fixed mount that the part being connected is curved, ajutage 19 is set between the curved portions of arc frame 18 and U-tube 15, i.e. ajutage 19 and steel wire rope 11 be arranged in parallel.During design, the radius radius slightly larger than ajutage 19 of arc frame 18 should be made, in order to ajutage 19 slightly gap after being fed through arc frame 18 and between arc frame 18 so that ajutage 19 can rotate in arc frame 18.And in order to prevent ajutage 19 from deviating from arc frame 18, the bottom of ajutage 19 can arrange a pair annular solid protruding from ajutage 19 outer wall, the radius of a pair annular solid is all higher than the radius of arc frame 18, and arc frame 18 is between a pair annular solid, so that ajutage 19 not only can move up and down along with steel wire rope under the effect of airduct leading truck 14, but also can rotate relative to airduct leading truck 14.Namely, ajutage 19 can move up and down along with the drill bit of rope traction, and when bit, ajutage 19 along with bit, will effectively prevent ajutage 19 to be wound around on a steel cord, in addition, creep in the process of abrupt slope rock at drill bit, the position of the relative drill end in ajutage 19 bottom remains unchanged so that the air-supply effect of ajutage 19 is always maintained at constant, also avoids ajutage to be wrapped on drill bit.
Wherein, in step 2, when one end of ajutage 19 is fixed on steel wire rope 11, described one end (i.e. the bottom of ajutage 11) of ajutage 11 is positioned at the top (as shown in Figure 3) of drill bit and steel wire rope 11 junction, and the bottom of ajutage 19 is placed in airduct leading truck 14.Drawn by great many of experiments, ajutage 19 bottom from the distance of drill end be 1.2-1.8m time, best results of blowing.
The present invention is by the drill bit airduct leading truck for being set with ajutage installed above, ajutage is prevented to be wrapped on drill bit, and by blowing while creeping at drill bit, it is possible to effectively prevent boring mud etc. to be deposited at the bottom of hole, avoid drill bit to repeat to creep into boring mud, improve drilling efficiency.
Wherein, the drill bit that rig uses when creeping into rock mass can adopt cross bit, it would however also be possible to employ friction-type drill bit, it is preferred that the drill bit of the embodiment of the present invention is friction-type drill bit.
As it is shown in figure 1, the front view of the friction-type drill bit provided for the embodiment of the present invention, Fig. 2 is the upward view of friction-type drill bit shown in Fig. 1.As seen from Figure 1, Figure 2, the friction-type drill bit that the embodiment of the present invention provides includes the drillstock 1 for connecting with rig, its top connects the drill body 2 of drillstock 1 bottom, and wherein, drill body 2 includes: the body 3 of connection drillstock 1 bottom, its top；It is arranged on multiple grinding subassemblies of body 3 bottom；Being arranged on the multiple discharge troughs 4 for discharging rock dust on body 3 outer wall, the plasma discharge mouth of each of which discharge trough 4 is adjacent with two grinding subassemblies in multiple grinding subassemblies；It is arranged on the multiple arc bodies 6 for closing off each grinding subassembly part of body 3 bottom.
Concrete, as shown in Figure 1 and Figure 2, the body 3 of the present embodiment friction-type drill bit is in up-narrow and down-wide taper, uniform in the bottom of body 3 multiple grinding subassembly be set (grinding subassembly can be 2,3,4 or more, figure only shows 4 grinding subassemblies), adopt the mode of flat surface grinding to deep basement rock trenching construction by multiple grinding subassemblies, increase the contact area between grinding subassembly and rock mass, make drill bit that the impulsive force of rock mass is uniform, the process of grinding pore-creating not easily occurs bit freezing phenomenon, there is the effect of pore-creating correction.Outer wall at body 3 is offered along its axially extended multiple discharge troughs 4, and the rock dust formed during by discharge trough 4 by grinding subassembly grinding rock mass is discharged, in order to improves and creeps into work efficiency, reduces the abrasion to grinding subassembly.Multiple arc body 6 (quantity of arc body 6 is identical with the quantity of grinding subassembly) is set in body 3 bottom, a grinding subassembly part is closed by each arc body 6, honeycomb free face can be formed between multiple grinding subassemblies and corresponding multiple arc bodies, it is beneficial to pore-forming when rock mass is crept into and crushes.
Wherein, having multiple claw bottom body 3, the quantity of claw can be 2,3,4 or more, during design, the quantity of claw is identical with the quantity of grinding subassembly, arc body, and position relationship each other is also identical, and determines the quantity of claw according to the concrete condition constructed.Multiple discharge troughs 4 are respectively arranged between the claw that each two is adjacent.Below, only for the structure of the friction-type drill bit with 4 claws as shown in Figure 2, the structure of the friction-type drill bit of the present invention is described in detail.
As in figure 2 it is shown, the friction-type drill bit of the present embodiment has 4 claws, each claw disposing a grinding subassembly and an arc body 6, arc body is arranged at the edge of corresponding claw.Wherein, grinding subassembly on each claw includes: be arranged at a pair first grinding blocks 5 of body 3 bottom (i.e. claw bottom), it is arranged at body 3 bottom (i.e. claw bottom) and is positioned at the second grinding block 7 inside a pair first grinding blocks 5, second grinding block 7 and a pair first grinding blocks 5 distributions in Y-shaped so that formed between the second grinding block 7 and a pair first grinding blocks 5 be beneficial to pore-forming broken face dead slot.Preferably, the reserved mouth of a river 8 is left between lateral surface and the medial surface of a pair first grinding blocks 5 of the second grinding block 7, so that the rock dust formed during grinding block grinding rock mass flows to the plasma discharge mouth of discharge trough 4 from the reserved mouth of a river 8, and discharge via discharge trough 4, the rock dust even disintegrating slag of grinding block is avoided to accumulate at the bottom of hole, it is difficult to float in hole and discharge, make to be formed at the bottom of hole thicker precipitate, and precipitate has cushioned the impulsive force of drill bit, drill bit is made to be repeated creeping into precipitate, thus that reduces drill bit creeps into work efficiency, affect construction speed.
Preferably, the lateral surface of each claw of body 3 is curved, and the external diameter of the arc body 6 on claw is equal to the radius of claw, i.e. arc body 6 being axially placed in bottom claw and extending down along body 3.Wherein, the medial surface of the arc body 6 on each claw contacts respectively with the lateral surface of a pair first grinding blocks 5 on this claw, in order to arc body 6 closes a pair first grinding blocks 5.During design, the height of arc body 6 can less than the height of grinding block (height herein refers to the height that arc body 6 and each grinding block extend down from body bottom along body axial direction).
Owing to the lateral surface of a pair first grinding blocks 5 is closed by the arc body 6 on claw, and the external diameter of arc body 6 is identical with the radius of corresponding claw, therefore, it can be ensured that when drill bit creeps into rock mass pore-creating, the edge in hole round and smooth and without teeth resistance, thus improving efficiency of construction when creeping into.
Due to the arc body 6 on each claw, between a pair first grinding blocks 5 and the second grinding block 7, forming dead slot so that between multiple grinding subassemblies and the multiple arc body 6 on multiple claws, favose free face can be formed, crushing thus being beneficial to pore-forming.
Wherein, the discharge trough arranged between adjacent claw extends up and down along body axially direction, and the plasma discharge mouth of the discharge trough opening being positioned at body bottom of discharge trough (the plasma discharge mouth refer to) is in circular arc and recessed towards the center position of body bottom.During design, the radius of plasma discharge mouth is more than the radius of discharge trough other parts, i.e. discharge trough extends after being tilted upward an extension part by plasma discharge mouth more straight up.
Wherein, first grinding block 5 of the present embodiment and the second grinding block 7 respectively one bar seamed edge triangular prism (as shown in Figure 2) down, this seamed edge becomes the grinding sword of grinding block, and the faceted pebble corresponding with this seamed edge is fixedly mounted on body bottom, as each grinding face being welded on by the mode of welding the bottom of body.
Preferably, first grinding block 5 and the second grinding block 7 are made by high-strength alloy, the high-strength alloy making grinding block can adopt having of prior art high strength cemented carbide steel wear-resisting, resistance to impact one-tenth to make, and preferably yield strength is not less than 800MPa, as YG3X tungsten steel alloy can be adopted to make.And arc body can adopt the material identical with grinding block to make, it is possible to adopt other material with high intensity to make, as, high-strength spring or semiaxis is adopted to make, and it is fixed on the edge of body by the mode welded, together with each grinding block, it is achieved tunneling boring forms high intensity rubbing surface.
In addition, the present embodiment is at drill body 2 (as shown in Figure 1) or arranges hanger 9 on other parts connect drill bit, by wearing the steel wire rope for drawing drill bit in hanger 9, it is prevented that the friction-type drill bit of the present invention when rock mass is carried out high speed impact, drill bit falls to bore the generation of situation.
The present invention is in the process that high inclination-angle abrupt slope rock is constructed, also relate to other operation and apparatus, the such as construction to secondary orifices, use plane set-hammer to flat etc. in main aperture, the formed groove of secondary orifices connection after secondary orifices is constructed, these operations can adopt the construction method of prior art, its process is not described in detail at this.
In sum, the abrupt slope rock construction method of the embodiment of the present invention has the advantage that
1), the method for the present embodiment, adopt grooving locating rack to guide drill bit to construct to scar higher part position, it is ensured that the perpendicularity of grooving, when grooving is crept in lithostratigraphy, big abrupt slope, adopt the mode of creeping into of short stroke, high frequency time, improve drilling efficiency, accelerating construction progress, improves production efficiency；
2), in the method for the present embodiment, adopt friction-type drill bit, it has multiple grinding subassembly, adopt the mode of flat surface grinding to abrupt slope rock trenching construction by multiple grinding subassemblies, increase the contact area between grinding subassembly and abrupt slope rock inclined rock base, make drill bit that the impulsive force of rock mass is uniform, the process of grinding pore-creating not easily occurs bit freezing phenomenon, there is the effect of pore-creating correction；
3), the friction-type drill bit of the present embodiment, favose free face can be formed between multiple grinding subassemblies and multiple arc body, crushing thus being beneficial to pore-forming when rock mass is crept into by drill bit, improving and creeping into work efficiency, accelerating construction progress；
4), the friction-type drill bit of the present embodiment, the reserved mouth of a river is left between the first grinding block and the second grinding block, and the reserved mouth of a river is connected with plasma discharge mouth, so that the rock dust even disintegrating slag of grinding block that are formed during drill bit grinding rock mass can be discharged in time without accumulating at the bottom of hole, thus without forming thicker precipitate at the bottom of hole, precipitate is repeated creeping into by impulsive force and the drill bit of avoiding precipitate cushioned drill bit, improves the work efficiency of creeping into of drill bit, improves construction speed；
5), the friction-type drill bit of the present embodiment, the lateral surface of a pair corresponding first grinding blocks is closed by arc body, and the external diameter of arc body is identical with the radius of corresponding claw, therefore, can ensure that when drill bit creeps into rock mass pore-creating, the edge in hole round and smooth and without teeth resistance, improve efficiency of construction when creeping into, reduce the unproductive time repairing hole, it is ensured that construction quality；
6), the friction-type drill bit of the present embodiment, each grinding block is made up of the high-strength alloy of wear and shock-resistant, will not falling slag easily when grinding rock mass or broken, drill bit is keeped in repair, boring is carried out deslagging, repaiied the unproductive time in hole by minimizing, improves and creeps into work efficiency；
7), the friction-type drill bit of the present embodiment, other parts at drill body or drill bit are provided with hanger, by wearing the steel wire rope for drawing drill bit in hanger, it is prevented that drill bit is when carrying out high speed impact to rock mass, there is brill situation, improve construction safety and work efficiency.
Although above the embodiment of the present invention being explained in detail; but the embodiment of the present invention is not limited to this; those skilled in the art can principle according to embodiments of the present invention modify; therefore, the various amendments that all principles according to the embodiment of the present invention carry out all should be understood to fall into the protection domain of the embodiment of the present invention.
Claims (10)
1. a high inclination-angle abrupt slope rock forming construction method thereof, it is characterised in that including:
The cover layer of abrupt slope rock is carried out boring process, bottom Drilling main aperture close to or when having reached the inclined rock base of abrupt slope rock, promote drill bit；
After promoting drill bit, the aperture place of grooving after piercing disposes grooving locating rack, in order to guide drill bit to move to scar higher part position by grooving locating rack；
Drill bit is guided to scar higher part position by grooving locating rack, makes drill bit vertically grinding from top to bottom creep into, in order to the inclined rock base of abrupt slope rock is carried out trenching construction, until the scar formed after Drilling is in same level.
2. method according to claim 1, it is characterised in that described grooving locating rack includes:
For being set up in the supporting seat of the level at described aperture place；
It is respectively arranged in a pair fixing plate of supporting seat both sides, a pair fixing plate offers the corresponding multiple draw-in grooves in position or hole clipping；
Its two ends are for being respectively disposed on the motion bar in the draw-in groove or hole clipping fixing plate a pair；
Wherein, the length bearing of trend of described motion bar and the length bearing of trend in described aperture are parallel.
3. method according to claim 2, it is characterised in that described grooving locating rack also includes the shock absorber part for damping being placed on described motion bar.
4. the method according to claim 1 or 2 or 3, it is characterized in that, guide drill bit to move to scar higher part position by described grooving locating rack, prop up the step of the steel wire rope for drawing described drill bit of grooving rig including the motion bar adopting described grooving locating rack.
5. method according to claim 4, it is characterised in that guide drill bit to move to scar higher part position by described grooving locating rack, also includes the position by changing described motion bar, the step of the relative scar position that changes described drill bit.
6. the method according to any one of claim 1-3, it is characterised in that described drill bit is that cross bores or friction-type drill bit.
7. method according to claim 6, it is characterised in that described friction-type drill bit includes the drill body of drillstock, the described drillstock bottom of connection, its top, and described drill body includes:
Its top connects the body of described drillstock bottom；
It is arranged on multiple grinding subassemblies of described body bottom；
Being arranged on the multiple discharge troughs for discharging rock dust on described body outer wall, the plasma discharge mouth of each of which discharge trough is adjacent with two grinding subassemblies in the plurality of grinding subassembly；
It is arranged on the multiple arc bodies for closing off each grinding subassembly part of body bottom.
8. method according to claim 7, it is characterised in that described grinding subassembly includes:
It is arranged at a pair first grinding blocks of described body bottom；
It is arranged at described body bottom and is positioned at the second grinding block inside a pair first grinding blocks；
Wherein, described second grinding block and the pair of first grinding block are Y-shaped distribution.
9. method according to claim 8, it is characterised in that described body bottom portion has at least three claw, and each described grinding subassembly is placed on a claw.
10. method according to claim 1, it is characterised in that utilize friction-type drill bit the inclined rock base of abrupt slope rock is carried out Drilling process time, also include slurry conveyed in the slotted eye formed towards Drilling and make the step of the circulation of mud in groove.
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| CN201610283152.6A CN105780783B (en) | 2016-04-28 | 2016-04-28 | High inclination-angle abrupt slope rock forming construction method thereof |
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| CN201610283152.6A CN105780783B (en) | 2016-04-28 | 2016-04-28 | High inclination-angle abrupt slope rock forming construction method thereof |
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| CN105780783B (en) | 2018-03-27 |
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