CN102678049B - Circular cutting drill bit, rotary drilling machine and rock drilling method adopting static blasting - Google Patents
Circular cutting drill bit, rotary drilling machine and rock drilling method adopting static blasting Download PDFInfo
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- CN102678049B CN102678049B CN201210122747.5A CN201210122747A CN102678049B CN 102678049 B CN102678049 B CN 102678049B CN 201210122747 A CN201210122747 A CN 201210122747A CN 102678049 B CN102678049 B CN 102678049B
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Abstract
The invention provides a circular cutting drill bit, a rotary drilling machine and a rock drilling method adopting static blasting. The rock drilling method comprises the following steps: drilling a central hole and an annular hole by using the rotary drilling machine, wherein the diameter of the central hole is less than a designed pile diameter and the central hole is located in the annular hole; putting a static blasting matter into the central hole; triggering the static blasting matter and breaking a rock core; fishing out the broken rock dregs; and repeating the steps in turn till a pile hole with preset depth is formed. According to the rock drilling method provided by the invention, by virtue of the torque and pressure of the rotary drilling machine, a small-diameter cylinder drill is utilized to drill the central hole; the rotary drilling machine is utilized to drill an outside annular hole by circularly cutting; the static blasting matter is placed into the central hole; and the rock is broken by utilizing the expansive force of the static blasting matter and the dregs are taken out, till the drilling is completed. The rock drilling method is especially suitable for the drilling construction on a large-aperture hard rock ground layer; the static blasting matter is utilized to extrude and break the rock in the central hole; the advantages of the rotary drilling machine are fully utilized; and the rotary rock-drilling efficiency is increased.
Description
Technical field
The present invention relates generally to engineering machinery field, particularly a kind of ring cutting drill bit, rotary drilling rig and coordinate the method for drilling rocks of static blasting.
Background technology
Rotary drilling rig is a kind of machinery being adapted at soil taking hole forming filling pile construction in building foundation engineering, be widely used in the construction works such as highway bridge, highrise building, rotary drilling rig drives rotary bucket rotary cutting soil stone by drilling rod, is then promoted to the periodic cycle operation of hole thio-glycidyl ether soil stone.The equipment of rotary drilling rig mainly comprises jib lubbing mechanism, mast, master winch, auxiliary elevator, unit head, water booster system, drilling rod and drilling tool.During boring work, drilling tool with mast arrive stake position, unit head for drilling rod provide moment of torsion, water booster system by pressurization unit head mode plus-pressure is passed to drilling rod, drill bit, drill bit turns round broken ground, then fetches earth, and repeated work is until drilling to completion.At present, piles set into rock quantity gets more and more, and during the construction of rotary drilling rig embedding rock, efficiency of breaking rock is on the low side, and vibration is severe, serious to rotary drilling rig damage.
In current stone mining, many employing static blasting methods.This is grow up nearly period a kind of fractured rock or concrete new method, and what have utilizes chemically fragmenting agent, and what have utilizes hydralic hose etc.But, existing Static Blasting Technique only for fractured rock, and not for rotary drilling rig with the use of, in the drilling construction of ground consisting of hard rock, do not give full play to the purposes of rotary drilling rig, especially, in the ground consisting of hard rock drilling construction of large aperture, the efficiency that rotary drilling rig breaks rock construction has much room for improvement.
Summary of the invention
The present invention aims to provide a kind of ring cutting drill bit, rotary drilling rig and coordinates the method for drilling rocks of static blasting, and the present invention can give full play to rotary drilling rig advantage, improves to revolve to dig rock efficiency.
To achieve these goals, the present invention by the following technical solutions.
One aspect of the present invention provides the method for drilling rocks that a kind of rotary drilling rig coordinates static blasting, comprises
Step 1, utilizes rotary drilling rig to drill through centre bore and looping pit, and the diameter of described centre bore is less than design stake footpath, and described centre bore is positioned at the inside of described looping pit;
Step 2, drops into static blasting thing in described centre bore;
Step 3, triggers described static blasting thing, racks core;
Step 4, pulls broken rock slag out;
Step 5, repeats above-mentioned steps successively, until complete the stake holes of desired depth.
Further, the center of circle of described looping pit and the center of circle of centre bore are all in the circle centre position designing stake holes.
Further, the looping pit that drills through in described step 1 adopts ring cutting drill bit to complete:
Described ring cutting drill bit comprises the connection square toes, drilling pipe and the brill tooth that are fixedly connected sequentially, and described brill tooth is arranged on the below of described drilling pipe, and described drilling pipe is two layered cylinder wall construction, has the solid-holding chamber formed between inwall, outer wall and described inner and outer wall.
Further, described step 2 is specially: place to described looping pit and drag for slag cylinder, described in drag for slag cylinder and comprise at the bottom of barrel and cylinder, described in drag for slag cylinder Open Side Down, be provided with at the bottom of described cylinder along described in drag for the guide pipe of slag cylinder axis; After placing, described guide pipe is corresponding with described central hole location, drops into static blasting thing by the guide effect of described guide pipe in described centre bore;
Described step 3 is specially: trigger described static blasting thing, utilizes described static blasting thing to expand and racks core, make core and the described inwall close contact dragging for slag cylinder;
Described step 4 is specially: drag for slag cylinder described in proposition, pulls broken rock slag out.
Further, the lower end of dragging for the barrel of slag cylinder described in has to the described pushing off the slag block dragging for slag cylinder inside and extend.
The present invention additionally provides a kind of ring cutting drill bit drilling through looping pit on the other hand, comprise the connection square toes, drilling pipe and the brill tooth that are fixedly connected sequentially, described brill tooth is arranged on the below of described drilling pipe, described drilling pipe is two layered cylinder wall construction, has the solid-holding chamber formed between inwall, outer wall and described inner and outer wall.
Further, described brill tooth is evenly arranged on the below of described drilling pipe.
Further, have spaced junction plate, connect described inner and outer wall bottom described solid-holding chamber, described brill tooth is evenly arranged on the below of described inwall, outer wall and described junction plate.
Another aspect of the present invention additionally provides a kind of rotary drilling rig, has the ring cutting drill bit drilling through looping pit as above.
Further, described rotary drilling rig also has and drags for slag cylinder, described in drag for slag cylinder and comprise at the bottom of barrel and cylinder, described in drag for slag cylinder and comprise at the bottom of barrel and cylinder, described in drag for slag cylinder Open Side Down, be provided with at the bottom of described cylinder along described in drag for the axially extended guide pipe of slag cylinder.
The present invention utilizes rotary drilling rig to coordinate static blasting to bore rock, by moment of torsion and the plus-pressure of rotary drilling rig, first utilize minor diameter cylinder to creep into row center core drill to enter, then creep into by rotary drilling rig ring cutting and drill through exterior annular hole, then static blasting thing is placed at centre bore, after utilizing the expansion force of static blasting thing to break rock, take out boring mud, complete drilling construction.The present invention is specially adapted in the ground consisting of hard rock drilling construction of large aperture, utilizes static blasting thing at the broken rock of centre bore extruding, can give full play to rotary drilling rig advantage, improves to revolve to dig rock efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the embodiment schematic flow sheet that a kind of rotary drilling rig of the present invention coordinates the method for drilling rocks of static blasting;
Fig. 2 is the structural representation of the ring cutting drill bit of a kind of rotary drilling rig of the present invention;
Fig. 3 may be used for the structural representation dragging for slag cylinder in the method for drilling rocks of rotary drilling rig of the present invention cooperation static blasting.
Reference numerals list:
1-connects square toes, 2-inwall, 3-solid-holding chamber, 4-outer wall, 5-core, 6-centre bore, 7-boring mud, and 8-bores tooth, and 10-drags for slag cylinder, and 11-feeds intake bar, 12-water injection pipe, 13-guide pipe, 15-plug, 16-static blasting thing, 18-pushing off the slag block.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Referring to figs. 1 through Fig. 3, wherein, Figure 1 shows that a kind of rotary drilling rig provided by the invention coordinates the method for drilling rocks of static blasting, comprise the following steps:
Step 1, utilizes rotary drilling rig to drill through centre bore 6 and looping pit, and the diameter of centre bore 6 is less than design stake footpath, and centre bore 6 is positioned at the inside of described looping pit;
Step 2, drops into static blasting thing 16 in centre bore 6;
Step 3, triggers described static blasting thing 16, racks core 5;
Step 4, pulls broken rock slag out;
Step 5, repeats above-mentioned steps successively, until complete the stake holes of desired depth.
Rotary drilling rig of the present invention coordinates the method for drilling rocks of static blasting, by moment of torsion and the plus-pressure of rotary drilling rig, first utilize minor diameter cylinder to creep into row center core drill to enter, and drill through exterior annular hole by rotary drilling rig ring cutting, then static blasting thing 16 is placed at centre bore 6, after utilizing the expansion force of static blasting thing 16 to break rock, take out boring mud, complete drilling construction.Method for drilling rocks of the present invention is specially adapted in large aperture (such as aperture be 1.5m and more than) ground consisting of hard rock drilling construction, utilize static blasting thing 16 in centre bore 6, extrude broken rock, the method can give full play to rotary drilling rig advantage, improves to revolve to dig rock efficiency.For step 1, centre bore 6 can select the cylinder of minor diameter to bore, the diameter of the centre bore 6 completed should be less than design stake footpath, the selection of centre bore 6 diameter should be considered in conjunction with combined factors such as design stake footpath, the width of following looping pit, the explosion powers of following static blasting thing 16, reaches best to make the drilling efficiency of centre bore 6 and static blasting effect etc.Behind the diameter in selected center hole 6 and position, isodiametric cylinder can be installed on rotary drilling rig and creep into row and creep into work, and take out boring mud simultaneously.
Ring cutting drill bit (ring cutting drill bit as discussed below in the present invention) the ring cutting core that the present invention can utilize rotary drilling rig fit diameter to be equal to design stake footpath drills through looping pit, and takes out boring mud 7 simultaneously.The accuracy of follow-up static blasting effect or bore position for convenience, the position of centre bore 6 can preferably at center (i.e. the center of circle) place of design stake holes, in addition, the center of circle of the following looping pit drilled through can also be kept also to be in the center of design stake holes.
Drilling through this looping pit preferably can adopt the present invention's ring cutting drill bit as shown in Figure 2 to creep into, this ring cutting drill bit comprises the connection square toes 1, drilling pipe and the brill tooth 8 that are fixedly connected sequentially, bore the below that tooth 8 is arranged on drilling pipe, described drilling pipe is two layered cylinder wall construction, there is inwall 2, outer wall 4, between inwall 2 and outer wall 4, form solid-holding chamber 3.Wherein, square toes 1 are connected for being connected with the drilling rod of rotary drilling rig.This ring cutting drill bit has double-deck barrel and solid-holding chamber 3, can get out looping pit efficiently, and takes out boring mud 7 simultaneously.Certainly, other also can be adopted can to get out the brill excavation formula of looping pit, the drill bit such as using brill to dig centre bore 6 gets out looping pit continuously around centre bore 6 around centre bore 6.
It should be noted that, drilling through of centre bore 6 can complete before drilling through looping pit or afterwards; How execution conditions allow, and also can complete centre bore 6 and looping pit simultaneously.
In addition, looping pit of the present invention and centre bore 6 are that the rock stratum (i.e. core 5) in order to make centre bore 6 periphery forms free face, and core 5 only bottom is connected with overall rock stratum, and periphery is unsettled, and has centre bore 6 in the middle of core 5.Drilling through this looping pit is in order in subsequent step, convenient by core 5 explosion, forms stake holes.
That slag process is dragged in one group of explosion be associated for step 2,3,4, discussion of can putting together.Drag for slag work conveniently after explosion, the present invention preferably just places and drags for slag cylinder while input static blasting thing 16.Particularly, after looping pit has drilled through, then can to looping pit place as shown in Figure 3 drag for slag cylinder 10, prepare throw in static blasting thing 16 and drag for slag.Drag for slag cylinder 10 about this, it comprises at the bottom of barrel and cylinder, and Open Side Down to drag for slag cylinder 10, is provided with the guide pipe 13 along dragging for slag cylinder 10 axis at the bottom of described cylinder; And as preferred, the lower end of dragging for the barrel of slag cylinder 10 has to dragging for the inner pushing off the slag block 18 extended of slag cylinder 10.As further preferred version, pushing off the slag block 18 extends to dragging for slag cylinder 10 inner horizontal, and during for method for drilling rocks of the present invention, should notice that the width of pushing off the slag block 18 should mate with the Ring Width of looping pit.
The placement of dragging for slag cylinder 10 should ensure that guide pipe 13 is corresponding with centre bore 6 position, to drop into static blasting thing 16 by the guide effect of guide pipe 13 in centre bore 6, and the bar 11 that feeds intake can be used to carry out input static blasting thing 16, and the guide pipe 13 dragging for the setting of slag cylinder 10 top leads to the bar 11 that feeds intake.The pushing off the slag block 18 dragging for slag cylinder 10 setting effectively can block boring mud, the convenient sillar taking out static blasting thing 16 and burst out.
Static blasting thing 16 of the present invention can be hydralic hose or explosive cartridge.The diameter of hydralic hose or explosive cartridge need be less than the diameter of centre bore 6, to put into.Plug 15 can also be set at hydralic hose or explosive cartridge top after putting into centre bore 6.Static blasting thing 16 can also adopt other hydraulic mechanisms, also can adopt other chemical agent, and after utilizing chemical agent to react, volume expansion bursts core 5.If adopt related chemistry reagent, as calcium oxide and water, and volume expansion racks core 5 after reaction both utilizing, when adopting chemical agent similar like this, first can throw in calcium oxide with the bar 11 that feeds intake in centre bore 6, and water injection pipe 12 is set feeding intake on bar 11, utilize water injection pipe 12 to inject water to trigger calcium oxide reaction; If static blasting thing 16 is other chemical agent, water injection pipe 12 may be used for injecting other liquid or solids.
After static blasting thing 16 explosion, core 5 is broken into block, and tight with the contact internal walls dragging for slag cylinder 10, and frictional force is large, is convenient to drag for slag.
Due to different to the depth requirements of stake holes during practice of construction, and generally all deep, therefore need to repeat repeatedly to hole and just can complete the stake holes of needs after explosion, namely described in step 5.
In order to coordinate method for drilling rocks of the present invention, the invention provides a kind of ring cutting drill bit of rotary drilling rig as shown in Figure 2, comprise the connection square toes 1, drilling pipe and the brill tooth 8 that are fixedly connected sequentially, bore the below that tooth 8 is arranged on drilling pipe, drilling pipe is two layered cylinder wall construction, the solid-holding chamber 3 having inwall 2, outer wall 4 and formed between inwall 2 and outer wall 4.It should be noted that, in order to obtain better drilling effect, boring the below that tooth 8 is preferably circumferentially evenly arranged on drilling pipe.
Ring cutting drill bit of the present invention at centre bore 6 periphery ring cutting core 5, can drill through looping pit, and while creeping into, boring mud 7 can be stored to solid-holding chamber 3, is directly taken out of by boring mud 7 when promoting ring cutting drill bit.
Further, brill tooth 8 of the present invention evenly can be arranged on the below of drilling pipe, bores tooth 8 and preferably adopts bullet-shaped brill tooth, and preferably the diameter of the type brill tooth is greater than the thickness of barrel, the brill tooth that diameter is large understands the wall that some protrudes from barrel, can block boring mud, is convenient to drag for slag.In addition, dragging for slag to further facilitate boring, boring tooth 8 and can be set to inside or outward-dipping.
In addition, conveniently slag is dragged in boring, has spaced junction plate (not shown) bottom the solid-holding chamber 3 of ring cutting drill bit of the present invention, connects inwall 2 and outer wall 4, bores the below that tooth 8 is evenly arranged on inwall 2, outer wall 4 and described junction plate.Further, boring tooth 8 can be set to inside or outward-dipping; More specifically, the brill tooth 8 be arranged on below inwall 2 can slope inwardly setting, and the brill tooth 8 be arranged on below junction plate can vertically be arranged, and the brill tooth 8 be arranged on below outer wall 4 can outward-dippingly be arranged.
The present invention also provides a kind of churning driven rig, and it has rotary drilling rig ring cutting drill bit as above, to coordinate method of the present invention to construct.
Further, this churning driven rig also has and mentioned above drags for slag cylinder 10, and this drags for slag cylinder 10 and comprises at the bottom of barrel and cylinder, and Open Side Down to drag for slag cylinder 10, is provided with along dragging for the axially extended guide pipe 13 of slag cylinder 10 at the bottom of cylinder.As preferably, the lower end of dragging for the barrel of slag cylinder 10 has the pushing off the slag block 18 to dragging for slag cylinder 10 inside and extending, for blocking boring mud, and the convenient sillar taking out static blasting thing 16 and burst out.Preferably, pushing off the slag block 18 extends to dragging for slag cylinder 10 inner horizontal.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. rotary drilling rig coordinates a method for drilling rocks for static blasting, it is characterized in that, comprises
Step 1, utilizes rotary drilling rig to drill through centre bore (6) and looping pit, and the diameter of described centre bore (6) is less than design stake footpath, and described centre bore (6) is positioned at the inside of described looping pit;
Step 2, drops into static blasting thing (16) in described centre bore (6);
Step 3, triggers described static blasting thing (16), racks core (5);
Step 4, pulls broken rock slag out;
Step 5, repeats above-mentioned steps successively, until complete the stake holes of desired depth.
2. rotary drilling rig according to claim 1 coordinates the method for drilling rocks of static blasting, and it is characterized in that, the center of circle of the center of circle of described looping pit and centre bore (6) is all in the circle centre position designing stake holes.
3. rotary drilling rig according to claim 1 coordinates the method for drilling rocks of static blasting, it is characterized in that, the looping pit that drills through in described step 1 adopts ring cutting drill bit to complete:
Described ring cutting drill bit comprises the connection square toes (1), drilling pipe and the brill tooth (8) that are fixedly connected sequentially, described brill tooth (8) is arranged on the below of described drilling pipe, described drilling pipe is two layered cylinder wall construction, the solid-holding chamber (3) having inwall (2), outer wall (4) and formed between described inwall (2) and outer wall (4).
4. rotary drilling rig according to claim 1 coordinates the method for drilling rocks of static blasting, it is characterized in that,
Described step 2 is specially: place to described looping pit and drag for slag cylinder (10), the described slag cylinder (10) that drags for comprises at the bottom of barrel and cylinder, describedly drag for slag cylinder (10) Open Side Down, be provided with at the bottom of described cylinder along described in drag for the axial guide pipe (13) of slag cylinder (10); After placing, described guide pipe (13) is corresponding with described centre bore (6) position, drops into static blasting thing (16) by the guide effect of described guide pipe (13) in described centre bore (6);
Described step 3 is specially: trigger described static blasting thing (16), utilize the expansion of described static blasting thing (16) to rack core (5), make core (5) and the described inwall close contact dragging for slag cylinder (10);
Described step 4 is specially: drag for slag cylinder (10) described in proposition, pulls broken rock slag out.
5. rotary drilling rig according to claim 4 coordinates the method for drilling rocks of static blasting, it is characterized in that, described in drag for the barrel of slag cylinder (10) lower end have to the described pushing off the slag block (18) dragging for slag cylinder (10) inside and extend.
6. one kind drills through the ring cutting drill bit of looping pit, comprise the connection square toes (1), drilling pipe and the brill tooth (8) that are fixedly connected sequentially, it is characterized in that, described drilling pipe is two layered cylinder wall construction, the solid-holding chamber (3) having inwall (2), outer wall (4) and formed between described inwall (2) and outer wall (4);
Described brill tooth (8) is evenly arranged on the below of described drilling pipe;
Described solid-holding chamber (3) bottom has spaced junction plate, connects described inwall (2) and outer wall (4); Described brill tooth (8) is evenly arranged on the below of described inwall (2), outer wall (4) and described junction plate.
7. a rotary drilling rig, is characterized in that, has the ring cutting drill bit drilling through looping pit as claimed in claim 6.
8. rotary drilling rig according to claim 7, it is characterized in that, described rotary drilling rig also has and drags for slag cylinder (10), the described slag cylinder (10) that drags for comprises at the bottom of barrel and cylinder, describedly drag for slag cylinder (10) Open Side Down, be provided with at the bottom of described cylinder along described in drag for slag cylinder (10) axially extended guide pipe (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210122747.5A CN102678049B (en) | 2012-04-24 | 2012-04-24 | Circular cutting drill bit, rotary drilling machine and rock drilling method adopting static blasting |
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| CN201210122747.5A CN102678049B (en) | 2012-04-24 | 2012-04-24 | Circular cutting drill bit, rotary drilling machine and rock drilling method adopting static blasting |
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| CN102678049A CN102678049A (en) | 2012-09-19 |
| CN102678049B true CN102678049B (en) | 2015-02-18 |
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| CN103061769B (en) * | 2013-01-04 | 2014-11-19 | 刘建平 | Processing method of punching injection type fractured stone material mining |
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| CN106761512B (en) * | 2016-12-28 | 2023-03-24 | 深圳市盛业地下工程有限公司 | Core cutting device and construction method |
| CN107367400B (en) * | 2017-07-06 | 2023-09-26 | 中建路桥集团有限公司 | A drilling coring device for road engineering quality inspection |
| CN108775226A (en) * | 2018-06-08 | 2018-11-09 | 兖州煤业股份有限公司 | A kind of device and method of underground static crushing armored concrete arch body |
| CN111578800A (en) * | 2020-05-27 | 2020-08-25 | 李天北 | Rapid blasting drilling method |
| CN112343510B (en) * | 2020-11-04 | 2023-01-24 | 北京三一智造科技有限公司 | Construction method for crushing rock and coring by using plasma pulse |
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| CN102678049A (en) | 2012-09-19 |
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