CN101235639B - Exploding expanding device for concrete filling pore bottom exploding expanding pile and pile forming method - Google Patents
Exploding expanding device for concrete filling pore bottom exploding expanding pile and pile forming method Download PDFInfo
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- CN101235639B CN101235639B CN2008100640074A CN200810064007A CN101235639B CN 101235639 B CN101235639 B CN 101235639B CN 2008100640074 A CN2008100640074 A CN 2008100640074A CN 200810064007 A CN200810064007 A CN 200810064007A CN 101235639 B CN101235639 B CN 101235639B
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Abstract
An explosive-enlarged device of explosive-enlarged pile on the bottom of concrete injection hole and a pile-forming process relate to an explosive-enlarged device of belled pile and a pile-forming process. The invention aims to solve the problems existing in the current explosive-enlarged pile of low pile-forming speed, non unification drilling and grouting, easy deviation-generating on the explosive-enlarged direction and complicate facility technology. And the scheme of the device is that wire passages are opened in the lateral wall of the upper end of a cartridge base, and a blasting agent storing groove is arranged on the lower lateral in the cartridge base. And the common characteristics from the first process to the third process are that a belled pile hole is formed through exploding belled blasting agent on the bottom of hole, and then concrete material or cement plaster are injected into the pile hole to form the pile. The explosive-enlarged pile of the invention has simple structure, convenient installation and low fault rate. The three pile-forming processes of the invention all realize the drilling, bell-out and injection in one time, ensure the precision of the bell-out, increases the pile-forming efficiency and the quality of pile-forming. The pile-forming process of the invention can realize the bell-out of immersed tube grout pile. The pile-forming process of the invention is especially suitable to the earth which can not form hole.
Description
Technical field
The present invention relates to a kind of explosive expansion device and piling method of expanded bore pile.
Background technology
In order to improve the bearing capacity of pile foundation, occurred in succession in recent years pressing irritating and penetrated the slurry expanded bore pile, press the filling rotary-jetting bottom-expanding pile and press the stake types such as expanding end agitation pile of irritating, by facts have proved, there is following shortcoming in above-mentioned stake type: after 1. slip casting finishes, when injecting concrete or cement mortar, because the effect of Negative Pressure Difference, Grouting Pipe can be blocked immediately.Though some process using non retern valve prevents that Grouting Pipe from being blocked, perhaps the Grouting Pipe that will be blocked with the mode of air pump gas injection is dredged, but because non retern valve is unreliable in underground activities, and injecting gas pressure and concrete pump do not match, so the problem that Grouting Pipe is blocked does not thoroughly solve so far.2. penetrating slurry expands the end and churning to expand that the end wants to reach the effect key that expands the end is that higher grouting pressure will be arranged, produce cutting jet thus, so require grouting pump pressure big, slip casting jet hole diameter is little, therefore, want real realize penetrating slurry and expand the end and churning to expand the end be very difficult according to prior art.3. press to irritate expand end agitation pile except that having an above-mentioned 1. shortcoming, also exist machinery to expand knife structure complexity, shortcoming that fault rate is high.4. tube-sinking cast-in-situ pile pours into the concrete material and is lowered to reinforcing cage by the stake pipe owing to be with vibrating hammer or knocking the stake pipe to be sunk in the soil layer, so can not expand at the end, the end bearing capacity is less.Traditional explosion expanded piling (sees that Fig. 6～Fig. 9) is applicable to the soil property of groundwater table cohesive soil, sand, gravelly soil and land pebble above, pore-forming.In the soil layer of pore-forming not, to can realize with sleeve pipe.The shortcoming that pile-forming speed is low so traditional explosion expanded piling exists, deviation, construction technology complexity appear in " bore irritate can not unify ", explosive expansion direction easily.
Summary of the invention
The objective of the invention is to have for solving existing explosion expanded piling that pile-forming speed is low, deviation, construction technology complicated problems appear in " bore and irritate and can not unify ", explosive expansion direction easily, and the explosive expansion device and the piling method of explosion expanded piling at the bottom of a kind of concrete pouring hole is provided.Explosive expansion device of the present invention comprises the gunpowder seat, has cable channel in the sidewall of gunpowder seat upper end.Downside in the gunpowder seat is provided with the explosive standing groove.Use the piling method of the explosive expansion device of explosion expanded piling at the bottom of the concrete pouring of the present invention hole, the step of first kind of piling method is: the long screw auger tool that, the gunpowder seat will be installed moves to the bore position of design; Two, penetrate in conduit by cable channel electric wire and be incorporated in the gunpowder seat, in the explosive standing groove of gunpowder seat, pack into from bottom to top and expand the end blasting charge and advance the blasting charge, with advancing the detonator on the blasting charge to be connected, the first apex point gripper shoe and the second apex point gripper shoe are closed up with electric wire; Three, the long screw auger tool that the gunpowder seat will be installed bores the stake hole to projected depth (absolute altitude); Four, the drilling rod inner chamber to the long screw auger tool pumps into concrete material or cement mortar; Five, upwards promoting the long screw auger tool opens the first apex point gripper shoe and the second apex point gripper shoe; Six, connect power supply to detonator, cap sensitive advances the blasting charge to make and explodes at the bottom of the expansion blasting charge directive hole, the end and at the bottom of the hole to form and expands bottom outlet; Seven, the drilling rod inner chamber by the long screw auger tool pours into concrete material or the cement mortar design height to the stake hole in the stake hole, proposes the long screw auger tool then in the stake hole; Eight, reinforcing cage is lowered to pile in the stake hole that pours into concrete material or cement mortar with artificial or vibrator.
The step of second kind of piling method is: the stake pipe that, the gunpowder seat will be installed moves to the immersed tube position of design; Two, penetrate in conduit by cable channel electric wire and be incorporated in the gunpowder seat, in the explosive standing groove of gunpowder seat, pack into from bottom to top and expand the end blasting charge and advance the blasting charge, with advancing the detonator on the blasting charge to be connected, four apex point flap valves are closed up with electric wire; Three, stake pipe beginning immersed tube and in the stake pipe, pack into concrete material or cement mortar, the volume of the concrete material of being packed into or the volume of cement mortar 〉=expansion bottom outlet (calculating of expanding bottom outlet is referring to State Standard of the People's Republic of China's " Code for construction and acceptance of foundation engineering " GBJ202-83); Four, the stake pipe is sink to projected depth, upwards promotes the stake pipe then four apex point flap valves are opened; Five, connect power supply to detonator, cap sensitive advances the blasting charge to make and explodes at the bottom of the expansion blasting charge directive hole, the end and at the bottom of the hole to form and expands bottom outlet; Six, in the stake hole, pour into concrete material or cement mortar and reinforcing cage pile by the stake pipe.
The step of the third piling method is: one, will expand above the precast pile tip that the end blasting charge is placed on pipeline sinking pile and bundle, the precast pile tip of pipeline sinking pile is contained in the bottom of gunpowder seat; Two, there is not the immersed tube position that stake pointed stake pipe moves to design; Three, penetrate in conduit by cable channel electric wire and be incorporated in the gunpowder seat, the detonator that expands on the end blasting charge is connected with electric wire, a precast pile tip and a nothing pointed stake pipe are connected; Four, a nothing stake pointed stake pipe begins immersed tube and pack into concrete material or cement mortar in not having stake pointed stake pipe, the volume of the concrete material of being packed into or the volume of cement mortar 〉=expansion bottom outlet (calculating of expanding bottom outlet is referring to State Standard of the People's Republic of China's " Code for construction and acceptance of foundation engineering " GBJ202-83); Five, do not have stake pointed stake pipe and be sink to projected depth, upwards promoting does not then have stake pointed stake pipe; Six, connect power supply to detonator, cap sensitive expands the end blasting charge and forms and expand bottom outlet, and seven, in the stake hole, do not pour into concrete material or cement mortar and reinforcing cage pile by there being a stake pointed stake pipe.
The beneficial effect of explosive expansion device of the present invention is: simple in structure, be convenient to install, fault rate is low.The beneficial effect of piling method of the present invention is: expand the end blasting charge (with advancing the blasting charge) owing to put in the gunpowder seat of the stake pipe bottom of long screw auger tool or pipeline sinking pile, realized boring, expanded the end and perfusion is once finished, thereby improved pile efficient and pile quality and simplified construction technology.Special because the stake pipe of the drilling rod of explosive expansion duration spiral drill or pipeline sinking pile is also in the stake hole, their explosive makes progress during to explosive expansion shock waves play suppression, again owing to expand the end blasting charge and advance the blasting charge in the gunpowder seat, the stake pipe nature of the drilling rod of the long screw auger tool on gunpowder seat and top or pipeline sinking pile becomes launching tube makes the blasting charge realize directional explosion, thereby make the reaming direction accurate, the reaming quality is improved.Piling method of the present invention has also been realized at the bottom of the expansion tube-sinking cast-in-situ pile.Piling method of the present invention especially is suitable for the not soil layer of pore-forming.
Description of drawings
Fig. 1 is the structural representation of explosive expansion device of the present invention, Fig. 2 is that the explosive expansion device is installed in the structural representation on the long screw auger tool, Fig. 3 is the enlarged drawing at B place among Fig. 2, Fig. 4 is that the A of Fig. 3 is to view, Fig. 5 is that the explosive expansion device is installed in the structural representation on the pointed stake pipe, Figure 10 is the structural representation that the explosive expansion device is installed in not to be had on the stake pointed stake pipe, Fig. 6～Fig. 9 is an explosive expansion flow chart at the bottom of the hole of traditional explosion expanded piling, wherein Fig. 6 is back-up sand in boring good hole, the following blasting charge, Fig. 7 is the top placing of concrete of the blasting charge in the hole, Fig. 8 is the ignition charge bag, and Fig. 9 checks the end situation that expands.Reference numeral 25 among the figure is vibrating hammers, the 26th, and loading hopper, the 27th, motor, the 28th, reduction box, the 29th, concrete ascending pipe.
The specific embodiment
The specific embodiment one: (referring to Fig. 1, Fig. 3) present embodiment is made up of gunpowder seat 5, has cable channel 4 in the sidewall of gunpowder seat 5 upper ends.
The specific embodiment two: the difference of (referring to Fig. 1, Fig. 3) present embodiment and the specific embodiment one is that the downside in the gunpowder seat 5 is provided with explosive standing groove 9.Explosive standing groove 9 is used to prevent that the blasting charge is to top offset.Other composition is identical with the specific embodiment one with annexation.
The specific embodiment three: the difference of (referring to Fig. 1, Fig. 3) present embodiment and the specific embodiment two is that it has increased retaining door 22, and retaining door 22 is arranged on the opening part of cable channel 4 in the gunpowder seat 5, and retaining door 22 is hinged with the inwall of gunpowder seat 5.The retaining door 22 that increases is used to prevent pour in the cable channel 4 concrete material or cement mortar.Other composition is identical with the specific embodiment two with annexation.
The specific embodiment four: (form by conduit 2, long screw auger tool 3, gunpowder seat 5, the first apex point bearing 6, first spool 7, first apex point axillare 8, the first apex point gripper shoe 10, the first apex point plate 11, the second apex point bearing 15, second 16, the second apex point axillare 17, the second apex point gripper shoe 20 and the second apex point plate 21 referring to the present embodiment of Fig. 1～Fig. 4); Fixedly connected with the drilling rod lower end of long screw auger tool 3 in the upper end of gunpowder seat 5, the outer wall of conduit 2 is fixedlyed connected with the drilling-rod external wall of long screw auger tool 3, fixedly connected with the upper end of gunpowder seat 5 one sides in the lower end of conduit 2, conduit 2 is connected with cable channel 4 on the gunpowder seat 5, the first apex point bearing 6 and the second apex point bearing, 15 positions are fixed on the outer wall of gunpowder seat 5 downsides in opposite directions, fixedly connected with the outside of the first apex point gripper shoe 10 in the inboard of the first apex point axillare 8, the first apex point axillare 8 is hinged by first 7 and the first apex point bearing 6, the first apex point plate 11 is fixed on the downside of the first apex point gripper shoe 10, fixedly connected with the outside of the second apex point gripper shoe 20 in the inboard of the second apex point axillare 17, the second apex point axillare 17 is hinged by second 16 and the second apex point bearing 15, the second apex point plate 21 is fixed on the downside of the second apex point gripper shoe 20, the first apex point gripper shoe 10 and the second apex point gripper shoe 20 are symmetrical arranged in the bottom of gunpowder seat 5, and the first apex point plate 11 and the second apex point plate 21 are symmetrical arranged.Other composition is identical with the specific embodiment two with annexation.
The specific embodiment five: (difference referring to the present embodiment of Fig. 2～Fig. 4) and the specific embodiment three is, it has increased by two tightening latches 18 and two hitching posts 19, a hitching post 19 is fixed on the first apex point gripper shoe 10 of the first apex point axillare, 8 opposite sides, another hitching post 19 is fixed on the second apex point gripper shoe 20 of the second apex point axillare, 17 opposite sides, two tightening latches 18 all are fixed on the outer wall of gunpowder seat 5 downsides, a hitching post 19 and a tightening latch are corresponding about in the of 18, and another hitching post 19 and another tightening latch are corresponding about in the of 18.(in the explosive standing groove 9 of gunpowder seat 5, pack into from bottom to top and expand the end blasting charge 14 and advance the blasting charge 13 during use, to advance the detonator 12 on the blasting charge 13 to be connected with electric wire 1, the first apex point gripper shoe 10 and the second apex point gripper shoe 20 are closed up the back) with the tightening latch 18 of top and the hitching post 19 usefulness thin wires binding of its bottom, be convenient to moving of long screw auger tool.After advancing the blasting charge 13 to ignite, its shock wave can be earned the thin wire of binding hitching post 19 and tightening latch 18 disconnected, the first apex point gripper shoe 10 and the second apex point gripper shoe 20 is opened discharged and expand the end blasting charge 14.Other composition is identical with the specific embodiment three with annexation.
The specific embodiment six: (referring to the bore position that the piling method of present embodiment of Fig. 1～Fig. 4) the steps include:, long screw auger tool 3 that gunpowder seat 5 will be installed moves to design; Two, penetrate in conduit 2 by cable channel 4 electric wire 1 and be incorporated in the gunpowder seat 5, in the explosive standing groove 9 of gunpowder seat 5, pack into from bottom to top and expand the end blasting charge 14 and advance the blasting charge 13, with advancing the detonator 12 on the blasting charge 13 to be connected, the first apex point gripper shoe 10 and the second apex point gripper shoe 20 are closed up with electric wire 1; Three, the long screw auger tool 3 that gunpowder seat 5 will be installed bores the stake hole to projected depth (absolute altitude); Four, the drilling rod inner chamber to long screw auger tool 3 pumps into concrete material or cement mortar; Five, upwards promoting long screw auger tool 3 opens the first apex point gripper shoe 10 and the second apex point gripper shoe 20; Six, give detonator 12 connection power supplys, detonator 12 ignition advance the blastings charge 13 to make at the bottom of the expansion blasting charge 14 directive holes, the end and blast formation expansion bottom outlet at the bottom of the hole; Seven, the drilling rod inner chamber by long screw auger tool 3 pours into concrete material or the cement mortar design height to the stake hole in the stake hole, proposes long screw auger tool 3 then in the stake hole; Eight, reinforcing cage is lowered to pile in the stake hole that pours into concrete material or cement mortar with artificial or vibrator.
The specific embodiment seven: in the step 4 of present embodiment, the amount of pumping into of concrete material or cement mortar is 〉=expand the volume of bottom outlet.Other is identical with the specific embodiment six.(calculating of expanding bottom outlet is referring to State Standard of the People's Republic of China's " Code for construction and acceptance of foundation engineering " GBJ202-83)
The specific embodiment eight: in the step 5 of present embodiment, the height that upwards promotes long screw auger tool 3 is 0.2～2 meter.Other is identical with the specific embodiment six.
The specific embodiment nine: in the step 5 of present embodiment, the height that upwards promotes long screw auger tool 3 is 0.8 meter.Other is identical with the specific embodiment six.
The specific embodiment ten: in the step 5 of present embodiment, the height that upwards promotes long screw auger tool 3 is 1.5 meters.Other is identical with the specific embodiment six.
The specific embodiment 11: (referring to Fig. 5) present embodiment is made up of conduit 2, stake pipe 32, gunpowder seat 5, four apex point flap valves 31 and four apex point bearing pins 30; Fixedly connected with the lower end of stake pipe 32 in the upper end of gunpowder seat 5, the outer wall of conduit 2 is fixedlyed connected with the outer wall of stake pipe 32, fixedly connected with the upper end of gunpowder seat 5 one sides in the lower end of conduit 2, conduit 2 is connected with cable channel 4 on the gunpowder seat 5, four apex point bearing pins 30 are fixed on four faces of gunpowder seat 5 downside outer walls, and an apex point flap valve 31 and an apex point bearing pin 30 are hinged.
The specific embodiment 12: the stake pipe 32 that the piling method of (referring to Fig. 5) present embodiment the steps include:, will be equipped with gunpowder seat 5 moves to the immersed tube position of design; Two, penetrate in conduit 2 by cable channel 4 electric wire 1 and be incorporated in the gunpowder seat 5, in the explosive standing groove 9 of gunpowder seat 5, pack into from bottom to top and expand the end blasting charge 14 and advance the blasting charge 13, with advancing the detonator 12 on the blasting charge 13 to be connected, four apex point flap valves 31 are closed up with electric wire 1; Three, stake pipe 32 beginning immersed tube and in stake pipe 32, pack into concrete material or cement mortar, the volume of the concrete material of being packed into or the volume of cement mortar 〉=expansion bottom outlet (calculating of expanding bottom outlet is referring to State Standard of the People's Republic of China's " Code for construction and acceptance of foundation engineering " GBJ202-83); Four, stake pipe 32 is sink to projected depth, upwards promotes stake pipe 32 then four apex point flap valves 31 are opened; Five, give detonator 12 connection power supplys, detonator 12 ignition advance the blastings charge 13 to make at the bottom of the expansion blasting charge 14 directive holes, the end and blast formation expansion bottom outlet at the bottom of the hole; Six, in the stake hole, pour into concrete material or cement mortar and reinforcing cage pile by stake pipe 32.
The specific embodiment 13: the piling method of (referring to Figure 10) present embodiment the steps include: one, will expand above the precast pile tip 33 that the end blasting charge 14 is placed on pipeline sinking pile and bundle, and the precast pile tip 33 of pipeline sinking pile is contained in the bottom of gunpowder seat 5; Two, there is not the immersed tube position that stake pointed stake pipe 34 moves to design; Three, penetrate in conduit 2 by cable channel 4 electric wire 1 and be incorporated in the gunpowder seat 5, the detonator 12 that expands on the end blasting charge 14 is connected with electric wire 1, a precast pile tip 33 and a nothing pointed stake pipe 34 are connected; Four, there are not stake pointed stake pipe 34 beginning immersed tube and in not having stake pointed stake pipe 34, pack into concrete material or cement mortar, the volume of the concrete material of being packed into or the volume of cement mortar 〉=expansion bottom outlet; Five, do not have stake pointed stake pipe 34 and be sink to projected depth, upwards promoting does not then have stake pointed stake pipe 34; Six, connect power supply for detonator 12, detonator 12 is ignited 14 formation of the expansion end blasting charge and is expanded bottom outlet; Seven, in the stake hole, do not pour into concrete material or cement mortar and reinforcing cage pile by there being stake pointed stake pipe 34.
Claims (10)
1. the explosive expansion device of explosion expanded piling at the bottom of the concrete pouring hole, it comprises gunpowder seat (5), it is characterized in that: have cable channel (4) in the sidewall of gunpowder seat (5) upper end.
2. the explosive expansion device of explosion expanded piling at the bottom of the concrete pouring according to claim 1 hole, it is characterized in that: it also comprises retaining door (22), downside in the gunpowder seat (5) is provided with explosive standing groove (9), retaining door (22) is arranged on the opening part of the interior cable channel of gunpowder seat (5) (4), retaining door (22) is hinged with the inwall of gunpowder seat (5), fixedly connected with the drilling rod lower end of long screw auger tool (3) in the upper end of gunpowder seat (5), the bottom of gunpowder seat (5) is provided with the first apex point gripper shoe (10) and the second apex point gripper shoe (20).
3. the explosive expansion device of explosion expanded piling at the bottom of the concrete pouring according to claim 1 hole, it is characterized in that: it also comprises retaining door (22), downside in the gunpowder seat (5) is provided with explosive standing groove (9), retaining door (22) is arranged on the opening part of the interior cable channel of gunpowder seat (5) (4), retaining door (22) is hinged with the inwall of gunpowder seat (5), fixedly connected with the lower end of stake pipe (32) in the upper end of gunpowder seat (5), four apex point bearing pins (30) are fixed on four faces of gunpowder seat (5) downside outer wall, and each the apex point flap valve (31) in four apex point flap valves (31) is hinged with a corresponding apex point bearing pin (30).
4. piling method that uses the explosive expansion device of explosion expanded piling at the bottom of the described concrete pouring of claim 2 hole, it is characterized in that: the step of piling method is: the long screw auger tool that gunpowder seat (5), will be installed
(3) move to the bore position of design; Two, penetrate in conduit (2) by cable channel (4) electric wire (1) and be incorporated in the gunpowder seat (5), in the explosive standing groove (9) of gunpowder seat (5), pack into from bottom to top and expand the end blasting charge (14) and advance the blasting charge (13), to advance the detonator (12) on the blasting charge (13) to be connected, the first apex point gripper shoe (10) and the second apex point gripper shoe (20) will be closed up with electric wire (1); Three, the long screw auger tool (3) that gunpowder seat (5) will be installed bores the stake hole to projected depth; Four, the drilling rod inner chamber to long screw auger tool (3) pumps into concrete material or cement mortar; Five, upwards promoting long screw auger tool (3) opens the first apex point gripper shoe (10) and the second apex point gripper shoe (20); Six, give detonator (12) connection power supply, detonator (12) ignition advances the blasting charge (13) to make at the bottom of the expansion end blasting charge (14) the directive hole and blast formation expansion bottom outlet at the bottom of the hole; Seven, the drilling rod inner chamber by long screw auger tool (3) pours into concrete material or the cement mortar design height to the stake hole in the stake hole, proposes long screw auger tool (3) then in the stake hole; Eight, reinforcing cage is lowered to pile in the stake hole that pours into concrete material or cement mortar with artificial or vibrator.
5. piling method according to claim 4 is characterized in that: in the step 4, the amount of pumping into of concrete material or cement mortar is 〉=expand the volume of bottom outlet.
6. piling method according to claim 4 is characterized in that: in the step 5, the height that upwards promotes long screw auger tool (3) is 0.2～2 meter.
7. piling method according to claim 4 is characterized in that: in the step 5, the height that upwards promotes long screw auger tool (3) is 0.8 meter.
8. piling method according to claim 4 is characterized in that: in the step 5, the height that upwards promotes long screw auger tool (3) is 1.5 meters.
9. piling method that uses the explosive expansion device of explosion expanded piling at the bottom of the described concrete pouring of claim 3 hole, it is characterized in that: the step of piling method is: the stake pipe (32) that gunpowder seat (5), will be installed moves to the immersed tube position of design; Two, penetrate in conduit (2) by cable channel (4) electric wire (1) and be incorporated in the gunpowder seat (5), in the explosive standing groove (9) of gunpowder seat (5), pack into from bottom to top and expand the end blasting charge (14) and advance the blasting charge (13), to advance the detonator (12) on the blasting charge (13) to be connected, four apex point flap valves (31) will be closed up with electric wire (1); Three, stake pipe (32) beginning immersed tube and in stake pipe (32), pack into concrete material or cement mortar, the volume of the concrete material of being packed into or the volume of cement mortar 〉=expansion bottom outlet; Four, stake pipe (32) is sink to projected depth, upwards promotes stake pipe (32) then four apex point flap valves (31) are opened; Five, give detonator (12) connection power supply, detonator (12) ignition advances the blasting charge (13) to make at the bottom of the expansion end blasting charge (14) the directive hole and blast formation expansion bottom outlet at the bottom of the hole; Six, in the stake hole, pour into concrete material or cement mortar and reinforcing cage pile by stake pipe (32).
10. piling method that uses the explosive expansion device of explosion expanded piling at the bottom of the described concrete pouring of claim 1 hole, it is characterized in that: the step of piling method is: one, will expand the end blasting charge (14) and be placed on above the precast pile tip (33) of pipeline sinking pile and bundle, the precast pile tip of pipeline sinking pile (33) is contained in the bottom of gunpowder seat (5); Two, there is not the immersed tube position that stake pointed stake pipe (34) moves to design; Three, penetrate in conduit (2) by cable channel (4) electric wire (1) and be incorporated in the gunpowder seat (5), the detonator (12) that will expand on the end blasting charge (14) is connected with electric wire (1), with precast pile tip (33) with do not have a stake pointed stake pipe (34) and connect; Four, there are not stake pointed stake pipe (34) beginning immersed tube and in not having stake pointed stake pipe (34), pack into concrete material or cement mortar, the volume of the concrete material of being packed into or the volume of cement mortar 〉=expansion bottom outlet; Five, do not have stake pointed stake pipe (34) and be sink to projected depth, upwards promoting does not then have stake pointed stake pipe (34); Six, connect power supply for detonator (12), detonator (12) is ignited the expansion end blasting charge (14) formation and is expanded bottom outlet; Seven, in the stake hole, do not pour into concrete material or cement mortar and reinforcing cage pile by there being stake pointed stake pipe (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100640074A CN101235639B (en) | 2008-02-18 | 2008-02-18 | Exploding expanding device for concrete filling pore bottom exploding expanding pile and pile forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100640074A CN101235639B (en) | 2008-02-18 | 2008-02-18 | Exploding expanding device for concrete filling pore bottom exploding expanding pile and pile forming method |
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| Publication Number | Publication Date |
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| CN101235639A CN101235639A (en) | 2008-08-06 |
| CN101235639B true CN101235639B (en) | 2011-02-09 |
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| CN2008100640074A Expired - Fee Related CN101235639B (en) | 2008-02-18 | 2008-02-18 | Exploding expanding device for concrete filling pore bottom exploding expanding pile and pile forming method |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104047286B (en) * | 2014-03-03 | 2016-04-27 | 贵州中建建筑科研设计院有限公司 | The hollow pointed stake of a kind of explosion type |
| CN105178290B (en) * | 2015-08-14 | 2017-05-10 | 太原理工大学 | Steel tube pile with blast expanding device |
| CN105113501B (en) * | 2015-08-14 | 2017-05-31 | 太原理工大学 | Formula large diameter cylinder suction anchor is extended out with explosive expansion device |
| CN105155532B (en) * | 2015-08-14 | 2017-06-16 | 太原理工大学 | Double expansion formula large diameter cylinder suction anchors with explosive expansion device |
| CN112482357B (en) * | 2020-12-04 | 2022-08-09 | 浙大城市学院 | Drilling tool for pre-blasting cement mixing pile suitable for hard soil layer and application method thereof |
| PL440070A1 (en) | 2021-12-31 | 2023-07-03 | Politechnika Gdańska | Method of forming a widened pile base |
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