CN102678049A - 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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- CN102678049A CN102678049A CN2012101227475A CN201210122747A CN102678049A CN 102678049 A CN102678049 A CN 102678049A CN 2012101227475 A CN2012101227475 A CN 2012101227475A CN 201210122747 A CN201210122747 A CN 201210122747A CN 102678049 A CN102678049 A CN 102678049A
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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, the method for drilling rocks of particularly a kind of ring cutting drill bit, rotary drilling rig and cooperation static blasting.
Background technology
Rotary drilling rig is a kind of machinery that is adapted at soil taking hole forming filling pile construction in the building foundation engineering; Be widely used in the construction workss such as highway bridge, highrise building; Rotary drilling rig leans on drilling rod to drive revolution bucket rotary cutting soil stone, is promoted to the periodic cycle operation of the native stone of unloading outside the hole then.The equipment of rotary drilling rig mainly comprises jib lubbing mechanism, mast, master winch, auxilliary elevator, unit head, water booster system, drilling rod and drilling tool.During boring work, drilling tool arrives the stake position with mast, and unit head is that drilling rod provides moment of torsion, water booster system through the mode of pressurization unit head plus-pressure to be passed to drilling rod, drill bit, and drill bit turns round broken ground, fetches earth then, and the work that repeats is until drilling to completion.At present, piles set into rock quantity is more and more, and efficiency of breaking rock is on the low side during the construction of rotary drilling rig embedding rock, and vibration is severe, and is serious to the rotary drilling rig damage.
In the present stone mining, adopt the static blasting method more.This is grow up nearly period a kind of fractured rock or concrete new method, and what have utilizes the chemically fragmenting agent, and what have utilizes hydralic hose etc.Yet; Existing static blasting technology is not used and be directed against rotary drilling rig only to fractured rock, in the drilling construction of ground consisting of hard rock, does 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 efficient of the broken rock construction of rotary drilling rig 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 cooperates the method for drilling rocks of static blasting, and the present invention can give full play to the rotary drilling rig advantage, improves to revolve to dig rock efficient.
To achieve these goals, the present invention adopts following technical scheme.
One aspect of the present invention provides a kind of rotary drilling rig to cooperate the method for drilling rocks of static blasting, comprises
Step 1 utilizes rotary drilling rig to drill through centre bore and looping pit, and the diameter of said centre bore is less than design stake footpath, and said centre bore is positioned at the inside of said looping pit;
Step 3 triggers said static blasting thing, squeezes broken core;
Step 4 is pulled broken rock slag out;
Further, the center of circle of the center of circle of said looping pit and centre bore all is in the circle centre position in design stake hole.
Further, the looping pit that drills through in the said step 1 adopts the ring cutting drill bit to accomplish:
Said ring cutting drill bit comprises connection square toes, brill tube and the brill tooth that is fixedly connected sequentially, and said brill tooth is arranged on said below of boring tube, and said brill tube is the two layered cylinder wall construction, has the solid-holding chamber that forms between inwall, outer wall and the said inner and outer wall.
Further, said step 2 is specially: place to said looping pit and drag for the slag tube, the said slag tube that drags for comprises a barrel and a tube end, saidly drags for the slag tube Open Side Down, and the said tube end is provided with along the said axial guide pipe of slag tube that drags for; It is corresponding with said central hole location to place the said guide pipe in back, and the guide effect through said guide pipe drops into the static blasting thing in said centre bore;
Said step 3 is specially: trigger said static blasting thing, utilize said static blasting thing to expand and squeeze broken core, core is closely contacted with the said inwall that drags for the slag tube;
Said step 4 is specially: propose the said slag tube that drags for, pull broken rock slag out.
Further, said lower end of dragging for the barrel of slag tube has to the said inner pushing off the slag piece that extends of slag tube that drags for.
The present invention also provides a kind of ring cutting drill bit that looping pit is used that drills through on the other hand; Comprise connection square toes, the brill tube that is fixedly connected sequentially and bore tooth; Said brill tooth is arranged on said below of boring tube; Said brill tube is the two layered cylinder wall construction, has the solid-holding chamber that forms between inwall, outer wall and the said inner and outer wall.
Further, said brill tooth evenly is arranged on said below of boring tube.
Further, bottom, said solid-holding chamber has the junction plate that is provided with at interval, connects said inner and outer wall, and said brill tooth evenly is arranged on the below of said inwall, outer wall and said junction plate.
Another aspect of the present invention also provides a kind of rotary drilling rig, has the aforesaid ring cutting drill bit that looping pit is used that drills through.
Further, said rotary drilling rig also has the slag of dragging for tube, and the said slag tube that drags for comprises a barrel and a tube end, and the said slag tube that drags for comprises a barrel and a tube end, saidly drags for the slag tube Open Side Down, and the said tube end is provided with along the said axially extended guide pipe of slag tube that drags for.
The present invention utilizes rotary drilling rig to cooperate static blasting to bore rock; By the moment of torsion and the plus-pressure of rotary drilling rig, at first utilize the minor diameter tube to creep into capable center core drill and advance, creep into by the rotary drilling rig ring cutting then and drill through the exterior annular hole; Place the static blasting thing at centre bore then; After utilizing the broken rock of expansion force of static blasting thing, take out boring mud, accomplish drilling construction.The present invention is specially adapted in the ground consisting of hard rock drilling construction of large aperture, utilizes the static blasting thing at the broken rock of centre bore extruding, can give full play to the rotary drilling rig advantage, improves to revolve to dig rock efficient.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the embodiment schematic flow sheet that a kind of rotary drilling rig of the present invention cooperates the method for drilling rocks of static blasting;
The structural representation of the ring cutting drill bit that Fig. 2 uses for a kind of rotary drilling rig of the present invention;
Fig. 3 is for being used for the structural representation that drags for the slag tube that rotary drilling rig of the present invention cooperates the method for drilling rocks of static blasting.
Reference numerals list:
1-connects square toes, the 2-inwall, and 3-solid-holding chamber, the 4-outer wall, the 5-core, the 6-centre bore, the 7-boring mud, 8-bores tooth, and 10-drags for the slag tube, the 11-bar that feeds intake, 12-water injection pipe, 13-guide pipe, 15-plug, 16-static blasting thing, 18-pushing off the slag piece.
The specific embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Referring to figs. 1 through Fig. 3, wherein, shown in Figure 1 is the method for drilling rocks that a kind of rotary drilling rig provided by the invention cooperates static blasting, may further comprise the 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 said looping pit;
Step 3 triggers said static blasting thing 16, squeezes broken core 5;
Step 4 is pulled broken rock slag out;
Rotary drilling rig of the present invention cooperates the method for drilling rocks of static blasting; By the moment of torsion and the plus-pressure of rotary drilling rig, at first utilize the minor diameter tube to creep into capable center core drill and advance, and drill through the exterior annular hole by the rotary drilling rig ring cutting; Place static blasting thing 16 at centre bore 6 then; After utilizing the broken rock of expansion force of static blasting thing 16, take out boring mud, accomplish drilling construction.Method for drilling rocks of the present invention is specially adapted in the ground consisting of hard rock drilling construction of large aperture (for example the aperture is more than 1.5m reaches); Utilize static blasting thing 16 in centre bore 6, to push broken rock; This method can be given full play to the rotary drilling rig advantage, improves to revolve to dig rock efficient.For step 1; Centre bore 6 can select the tube of minor diameter to bore completion; The diameter of the centre bore of accomplishing 6 should be less than design stake footpath; The selection of centre bore 6 diameters should combine to design the width of stake footpath, following looping pit, the combined factors such as explosion power of following static blasting thing 16 are considered, so that the drilling efficiency of centre bore 6 and static blasting effect etc. reach best.Behind the diameter and position in selected center hole 6, isodiametric tube can be installed on rotary drilling rig creep into row and creep into work, and take out boring mud simultaneously.
The present invention can utilize the ring cutting drill bit that rotary drilling rig fit diameter and design stake footpath be equal to (the ring cutting drill bit of hereinafter discussing like the present invention) ring cutting core to drill through looping pit, and take out boring mud 7 simultaneously.Be the convenient follow-up static blasting effect or the accuracy of bore position, the position of centre bore 6 can preferably be located at the center (being the center of circle) in design stake hole, in addition, can also keep the center of circle of the following looping pit that drills through also to be in the center of designing the stake hole.
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 connection square toes 1, the brill tube that is fixedly connected sequentially and bores tooth 8; Bore tooth 8 and be arranged on the below of boring tube; Said brill tube is the two layered cylinder wall construction, has inwall 2, outer wall 4, forms solid-holding chamber 3 between inwall 2 and the outer wall 4.Wherein, connecting square toes 1 is used 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, also can adopt other brill excavation formulas that can get out looping pit, the drill bit that for example uses brill to dig centre bore 6 gets out looping pit around centre bore 6 continuously around centre bore 6.
Need to prove, centre bore 6 drill through can drill through before the looping pit or after completion; How execution conditions allow, and also can accomplish centre bore 6 and looping pit simultaneously.
In addition, looping pit of the present invention and centre bore 6 are for the rock stratum that makes centre bore 6 peripheries (being core 5) forms free face, and core 5 only bottom is connected with whole rock stratum, and periphery is unsettled, and in the middle of the core 5 centre bore 6 is arranged.Drilling through this looping pit is in the subsequent step, convenient with core 5 explosions, forms the stake hole.
For step 2,3,4 is that the slag process is dragged in one group of explosion that is associated, the discussion of can putting together.The slag work of dragging for after the explosion for ease, the present invention are preferably just placed when throwing in static blasting thing 16 and are dragged for the slag tube.Particularly, after looping pit drills through completion, then can place the slag tube 10 that drags for as shown in Figure 3, prepare to throw in static blasting thing 16 and drag for slag to looping pit.Drag for slag tube 10 about this, it comprises a barrel and a tube end, and Open Side Down to drag for slag tube 10, and said tube is provided with at the end along dragging for the axial guide pipe 13 of slag tube 10; And as preferred, the lower end of dragging for the barrel of slag tube 10 has to dragging for the slag tube 10 inner pushing off the slag pieces 18 that extend.As further preferred version, pushing off the slag piece 18 extends to dragging for slag tube 10 inner horizontal, and when being used for method for drilling rocks of the present invention, should note pushing off the slag piece 18 width should with the annular width coupling of looping pit.
The placement of dragging for slag tube 10 should guarantee that guide pipe 13 is corresponding with centre bore 6 positions; So that the guide effect through guide pipe 13 drops into static blasting thing 16 in centre bore 6; And can use the bar 11 that feeds intake to throw in static blasting thing 16, drag for 13 pairs of guide pipes that slag tube 10 tops the are provided with bar 11 that feeds intake and lead.The pushing off the slag piece 18 that drags for 10 settings of slag tube can effectively block boring mud, the sillar that convenient taking-up static blasting thing 16 bursts out.
Static blasting thing 16 of the present invention can be hydralic hose or explosive cartridge.The diameter of hydralic hose or explosive cartridge needs the diameter less than centre bore 6, so that put into.Can also plug 15 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, utilizes chemical agent reaction back volume expansion to burst core 5.If adopt relevant chemical agent; Like calcium oxide and water; And utilize the two reaction back volume expansion to squeeze broken core 5, when adopting so similar chemical agent, can in centre bore 6, throw in calcium oxide with the bar 11 that feeds intake earlier; And on the bar 11 that feeds intake, water injection pipe 12 is set, utilize water injection pipe 12 to inject water and trigger the calcium oxide reaction; If static blasting thing 16 is other chemical agent, water injection pipe 12 can be used to inject other liquid or solids.
After 16 explosions of static blasting thing, core 5 is broken into piece, and contacts closely with the inwall that drags for slag tube 10, and frictional force is big, is convenient to drag for slag.
Since the degree of depth in stake hole is required during practice of construction different, and all deep generally speaking, therefore need repeat repeatedly to hole with explosion after the hole that could completions needs, promptly step 5 is said.
In order to cooperate method for drilling rocks of the present invention; The invention provides the ring cutting drill bit that a kind of rotary drilling rig as shown in Figure 2 is used; Comprise connection square toes 1, the brill tube that is fixedly connected sequentially and bore tooth 8; Bore tooth 8 and be arranged on the below of boring tube, boring tube is the two layered cylinder wall construction, has the solid-holding chamber 3 that forms between inwall 2, outer wall 4 and inwall 2 and the outer wall 4.Need to prove that in order to obtain better boring effect, it is preferred along circumferentially evenly being arranged on the below of boring tube to bore tooth 8.
Ring cutting drill bit of the present invention can drill through looping pit, and can when creeping into, boring mud 7 be stored to solid-holding chamber 3 at centre bore 6 periphery ring cutting cores 5, when promoting the ring cutting drill bit, directly boring mud 7 is taken out of.
Further, brill tooth 8 of the present invention can evenly be arranged on the below of boring tube, bores the bullet-shaped brill tooth of tooth 8 preferred employings; And preferred the type is bored the thickness of the diameter of tooth greater than barrel; The brill tooth that diameter is big is understood the wall that some protrudes in barrel, can block boring mud, is convenient to drag for slag.In addition, drag for slag, bore tooth 8 and can be set to inside or outward-dipping in order to further facilitate boring.
In addition, slag is dragged in boring for ease, and 3 bottoms, solid-holding chamber of ring cutting drill bit of the present invention have the junction plate (not shown) that is provided with at interval, connect inwall 2 and outer wall 4, bore the below that tooth 8 evenly is arranged on inwall 2, outer wall 4 and said junction plate.Further, boring tooth 8 can be set to inside or outward-dipping; More particularly, the brill tooth 8 that the is arranged on inwall 2 belows setting that can slope inwardly, the brill tooth 8 that is arranged on the junction plate below can vertically be provided with, and the brill tooth 8 that is arranged on outer wall 4 belows can outward-dippingly be provided with.
The present invention also provides a kind of revolving to dig the brill rig, and it has aforesaid rotary drilling rig and uses the ring cutting drill bit, so that cooperate method of the present invention to construct.
Further, this revolves to dig and bores rig and also have the slag tube 10 that drags for mentioned above, and this drags for slag tube 10 and comprises a barrel and a tube end, and Open Side Down to drag for slag tube 10, and a tube end is provided with along dragging for slag tube 10 axially extended guide pipes 13.As preferably, the lower end of dragging for the barrel of slag tube 10 has to dragging for the slag tube 10 inner pushing off the slag pieces 18 that extend, and is used to block boring mud, conveniently takes out the sillar that static blasting thing 16 bursts out.Preferably, pushing off the slag piece 18 extends to dragging for slag tube 10 inner horizontal.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for drilling rocks of a rotary drilling rig cooperation static blasting is characterized in that, comprises
Step 1 utilizes rotary drilling rig to drill through centre bore (6) and looping pit, and the diameter of said centre bore (6) is less than design stake footpath, and said centre bore (6) is positioned at the inside of said looping pit;
Step 2 drops into static blasting thing (16) in said centre bore (6);
Step 3 triggers said static blasting thing (16), squeezes broken core (5);
Step 4 is pulled broken rock slag out;
Step 5 repeats above-mentioned steps successively, until the stake hole of accomplishing desired depth.
2. rotary drilling rig according to claim 1 cooperates the method for drilling rocks of static blasting, it is characterized in that, the center of circle of the center of circle of said looping pit and centre bore (6) all is in the circle centre position in design stake hole.
3. rotary drilling rig according to claim 1 cooperates the method for drilling rocks of static blasting, it is characterized in that, the looping pit that drills through in the said step 1 adopts the ring cutting drill bit to accomplish:
Said ring cutting drill bit comprises connection square toes (1), the brill tube that is fixedly connected sequentially and bores tooth (8); Said brill tooth (8) is arranged on said below of boring tube; Said brill tube is the two layered cylinder wall construction, has the solid-holding chamber (3) that forms between inwall (2), outer wall (4) and said inwall (2) and the outer wall (4).
4. rotary drilling rig according to claim 1 cooperates the method for drilling rocks of static blasting, it is characterized in that,
Said step 2 is specially: place to said looping pit and drag for slag tube (10), the said slag tube (10) that drags for comprises a barrel and a tube end, saidly drags for slag tube (10) Open Side Down, and the said tube end is provided with along the said axial guide pipe (13) of slag tube (10) that drags for; It is corresponding with said centre bore (6) position to place the said guide pipe in back (13), and the guide effect through said guide pipe (13) drops into static blasting thing (16) in said centre bore (6);
Said step 3 is specially: trigger said static blasting thing (16), utilize said static blasting thing (16) to expand and squeeze broken core (5), core (5) is closely contacted with the said inwall that drags for slag tube (10);
Said step 4 is specially: propose the said slag tube (10) that drags for, pull broken rock slag out.
5. rotary drilling rig according to claim 4 cooperates the method for drilling rocks of static blasting, it is characterized in that, said lower end of dragging for the barrel of slag tube (10) has to the said inner pushing off the slag piece (18) that extends of slag tube (10) that drags for.
6. one kind drills through the ring cutting drill bit that looping pit is used; Comprise connection square toes (1), the brill tube that is fixedly connected sequentially and bore tooth (8); Said brill tooth (8) is arranged on said below of boring tube; It is characterized in that said brill tube is the two layered cylinder wall construction, has the solid-holding chamber (3) that forms between inwall (2), outer wall (4) and said inwall (2) and the outer wall (4).
7. according to claim 6ly drill through the ring cutting drill bit that looping pit is used, it is characterized in that said brill tooth (8) evenly is arranged on said below of boring tube.
8. according to claim 7ly drill through the ring cutting drill bit that looping pit is used, it is characterized in that bottom, said solid-holding chamber (3) has the junction plate that is provided with at interval, connects said inwall (2) and outer wall (4); Said brill tooth (8) evenly is arranged on the below of said inwall (2), outer wall (4) and said junction plate.
9. a rotary drilling rig is characterized in that, has as any claim of claim 6-8 is described to drill through the ring cutting drill bit that looping pit is used.
10. rotary drilling rig according to claim 9; It is characterized in that; Said rotary drilling rig also has the slag of dragging for tube (10), and the said slag tube (10) that drags for comprises the barrel and the tube end, and the said slag tube (10) that drags for comprises the barrel and the tube end; Saidly drag for slag tube (10) Open Side Down, the said tube end, be provided with along the said axially extended guide pipe of slag tube (10) (13) that drags for.
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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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| CN102926654A (en) * | 2012-11-12 | 2013-02-13 | 中铁十九局集团第五工程有限公司 | Pile Hole Ring Cutting System and Pile Hole Ring Cutting Method |
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| CN104763324A (en) * | 2015-04-01 | 2015-07-08 | 上海强劲地基工程股份有限公司 | Large-diameter hole forming construction equipment for core drilling rock entering and construction method thereof |
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| CN106761512A (en) * | 2016-12-28 | 2017-05-31 | 深圳市盛业地下工程有限公司 | Rock core cutter sweep and construction method |
| CN107367400A (en) * | 2017-07-06 | 2017-11-21 | 中建路桥集团有限公司 | Boring and coring device for road engineering quality inspection |
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| CN112343510A (en) * | 2020-11-04 | 2021-02-09 | 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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| CN104763324A (en) * | 2015-04-01 | 2015-07-08 | 上海强劲地基工程股份有限公司 | Large-diameter hole forming construction equipment for core drilling rock entering and construction method thereof |
| CN105509585A (en) * | 2016-01-15 | 2016-04-20 | 中国科学技术大学 | Rock-soil blasting method based on tensile stress |
| CN106761512A (en) * | 2016-12-28 | 2017-05-31 | 深圳市盛业地下工程有限公司 | Rock core cutter sweep and construction method |
| CN107367400A (en) * | 2017-07-06 | 2017-11-21 | 中建路桥集团有限公司 | Boring and coring device for road engineering quality inspection |
| 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 |
| CN112343510A (en) * | 2020-11-04 | 2021-02-09 | 北京三一智造科技有限公司 | Construction method for crushing rock and coring by using plasma pulse |
| 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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