CN208220631U - Improve the pretreatment hole structure of rock stratum impact holing work efficiency - Google Patents
Improve the pretreatment hole structure of rock stratum impact holing work efficiency Download PDFInfo
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- CN208220631U CN208220631U CN201820515637.8U CN201820515637U CN208220631U CN 208220631 U CN208220631 U CN 208220631U CN 201820515637 U CN201820515637 U CN 201820515637U CN 208220631 U CN208220631 U CN 208220631U
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- hole
- prebored
- rock stratum
- work efficiency
- pretreatment
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Abstract
The utility model relates to the technical fields of Percussion Piles, disclose the pretreatment hole structure for improving rock stratum impact holing work efficiency, including circular in shape at hole site and positioned at multiple prebored holes in hole site, have at hole site and be located at into the design stake bottom elevation location immediately below hole site, multiple prebored holes extend downward into design stake bottom elevation location.By in Percussion Piles at being drilled with multiple prebored holes in hole site in advance, and prebored hole is extended to the stake bottom elevation location of the rock stratum bottom of required pore-forming, during carrying out impact holing, jump bit impacts downwards, hole site is applied to by the shock loading of jump bit, the position of prebored hole can be made to form shear fracture, to make the pore-forming of Percussion Piles be more easier, greatly improve construction efficiency, and jump bit does not need too big energy, reduce the height of the jump bit of required promotion when construction, save the consumption of material, and reduce the degree of difficulty of construction.
Description
Technical field
The utility model relates to the pretreatment drillings of the technical field of Percussion Piles, especially raising rock stratum impact holing work efficiency
Structure.
Background technique
Percussion Piles are that the jump bit with sword is increased to certain altitude by rack, hoist engine using percussive drill, then
Instantaneous relase makes drill bit freely land, and forms stake holes using impact kinetic energy electuary soil layer or rock stratum, then with reacting cycle or its other party
Boring mud or landwaste are discharged method.
The punched hole construction technical maturity of Percussion Piles, depth of pore forming can be more than 100m, and diameter is up to 1500~2500mm, tool
Have that equipment is simple, flexible operation is easy, and driller parameters are easily mastered, and mechanical breakdown is lacked isopreference and made extensively in pile foundation engineering
With.The construction technology is suitable for the rock stratum of layer of sand, crushed stone soil layer, cranny development or karsts developing area.Especially in slewing drilling machine or
Other drilling methods are difficult to the rock stratum constructed, and select impact holing construction technology, can often reach satisfied result.
However in the prior art, in the case where drilling diameter is certain, even if improve jump bit fall away from be difficult to quickly
Pore-forming, and need encountering in the case where inclined rock base pore-forming, it often will cause phenomena such as card is hammered into shape, generally require to take back
Washer stone or concrete just can solve, and effect is also undesirable, thus cause the pore-forming efficiency of Percussion Piles low.
Utility model content
The utility model proposes raising rock stratum impact holing work efficiency pretreatment hole structure, it is intended to solve the prior art
The problem of punching low efficiency of middle Percussion Piles.
The utility model is realized in this way improving the pretreatment hole structure of rock stratum impact holing work efficiency, feature exists
In, including circular in shape at hole site and positioned at multiple prebored holes in hole site, it is described to have at hole site
Have and be located at the design stake bottom elevation location at immediately below hole site, multiple prebored holes extend downward into the design stake
Bottom elevation location.
Further, it is described at hole site outer ring around being arranged with casing.
Further, multiple prebored holes are with the center of circle at hole site around arranged for interval.
Further, the center of circle at hole site is equipped with a prebored hole, between the adjacent prebored hole is uniform
Every arrangement.
Further, the circular in cross-section shape of the prebored hole.
Further, the diameter of the prebored hole is 100~300mm.
Further, the spacing between the adjacent prebored hole is 10~15cm.
Further, the prebored hole carries out pore-forming using down-hole hammer.
Compared with prior art, the pretreatment hole structure provided by the utility model for improving rock stratum impact holing work efficiency,
By at being drilled with multiple prebored holes in hole site in advance, and prebored hole to extend to the rock stratum of required pore-forming in Percussion Piles
The stake bottom elevation location of bottom, during carrying out impact holing, jump bit impacts downwards, passes through the shock loading of jump bit
It is applied into hole site, the position of prebored hole can be made to form shear fracture, to make the pore-forming of Percussion Piles be more easier, greatly
Construction efficiency is improved, and the shock loading applied required for jump bit can also less realize punching, not need too big energy
Amount, reduces the height of the jump bit of required promotion when construction, saves the consumption of material, and reduce the difficult journey of construction
Degree.Solves the problems, such as the punching low efficiency of Percussion Piles in the prior art.
Detailed description of the invention
Fig. 1 is the punching of the pretreatment hole structure provided by the embodiment of the utility model for improving rock stratum impact holing work efficiency
The longitudinal cross-section schematic diagram of stake；
Fig. 2 is the preboring of the pretreatment hole structure provided by the embodiment of the utility model for improving rock stratum impact holing work efficiency
The arrangement schematic diagram in hole.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
The realization of the utility model is described in detail below in conjunction with specific embodiment.
The same or similar label correspond to the same or similar components in the attached drawing of the present embodiment；In retouching for the utility model
In stating, it is to be understood that if the orientation or positional relationship for having the instructions such as term " on ", "lower", "left", "right" is based on attached drawing
Shown in orientation or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion institute
The device or element of finger must have a particular orientation, be constructed and operated in a specific orientation, therefore position pass is described in attached drawing
The term of system only for illustration, should not be understood as the limitation to this patent, for those of ordinary skill in the art and
Speech, can understand the concrete meaning of above-mentioned term as the case may be.
It is preferred embodiment provided by the utility model shown in referring to Figures 1 and 2.
The pretreatment hole structure provided by the embodiment of the utility model for improving rock stratum impact holing work efficiency, for being drilled with
Percussion Piles 11 at multiple prebored holes 12 are drilled in hole site 111 in advance, make during at 111 impact holing of hole site
It is more efficient.
The pretreatment hole structure provided by the embodiment of the utility model for improving rock stratum impact holing work efficiency, including it is rounded
Shape at hole site 111 and positioned at multiple prebored holes 12 in hole site 111, have at hole site 111 and be located at pore-forming
Design stake bottom elevation location 141 immediately below position 111, multiple prebored holes 12 extend downward into design stake bottom elevation location
141。
In this way, by Percussion Piles 11 at being drilled with multiple prebored holes 12 in hole site 111 in advance, and by prebored hole
12 extend to the stake bottom elevation location 141 of 14 bottom of rock stratum of required pore-forming, during carrying out impact holing, jump bit to
Lower impact is applied into hole site 111 by the shock loading of jump bit, and the position of prebored hole 12 can be made to form shear fracture,
To make the pore-forming of Percussion Piles 11 be more easier, construction efficiency, and the impact applied required for jump bit are greatly improved
Load can also less realize punching, not need too big energy, reduce the height of the jump bit of required promotion when construction, section
The consumption of material has been saved, and has reduced the degree of difficulty of construction.
In addition, prebored hole 12 is to extend to design stake bottom elevation location 141 in the present embodiment, i.e., between prebored hole 12 is
The depth for extending to the Percussion Piles 11 that required punching is formed is choosing required punching position so in the actual construction process in advance
When, it is drilled with prebored hole 12, the soil property situation of rock stratum 14 can be first looked at by prebored hole 12, in the soil property feelings for having checked rock stratum 14
Be alternatively arranged as booster action when 11 pore-forming of Percussion Piles after condition, when 11 pore-forming of Percussion Piles it is more convenient.
Also, in Percussion Piles 11 at, around casing 13 is arranged with, casing 13 is embedded in 14 surface of rock stratum outside hole site 111
It is interior, indicate the punching position of Percussion Piles 11, in order to jump bit capturing position, and the guiding impacted downwards as jump bit is made
With in order to the impact holing of Percussion Piles 11.
The upper end of above-mentioned casing 13 leaks out rock stratum 14, so as to jump bit accurate positionin, also, prevents the Percussion Piles 11
It collapses in the position in aperture, casing 13 is then used as protective effect.
In the present embodiment, multiple prebored holes 12 at the center of circle of hole site 111 around arranged for interval, by by prebored hole 12
The center of circle for encompassing hole site 111 is arranged, in this way, when jump bit is acted on into hole site 111, attached by jump bit
Shock loading be evenly distributed in into hole site 111, keep each position stress identical, avoid jump bit offsetting dip.
Meanwhile it being equipped with a prebored hole 12 in the center of circle at hole site 111, adjacent 12 uniform intervals of prebored hole are arranged,
To keep each position stress of the plane of the Percussion Piles 11 identical, it is convenient for impact holing.
The prebored hole 12 of above-mentioned uniform intervals arrangement is impacted into as the present embodiment for more smooth rock stratum 14
Hole, and before being irrigated an impact holing to inclined scar position, according to place reconnoitre data can be preparatory oblique solution
The tendency of rock, according to the aperture of arrangement pretreatment drilling and spacing the case where oblique rock, and then can be more effective when impacting punching
The oblique rock of processing, and the phenomenon that prevent from encountering card hammer.
In the present embodiment, pore-forming is convenient in the circular in cross-section shape of prebored hole 12, round prebored hole 12, also, is rushing
It is more uniform to the shearing force of surrounding when hitting pore-forming, be conducive to improve punching efficiency.
In addition, the diameter of prebored hole 12 given by the utility model embodiment be 100~300mm, this diameter it is pre-
Drill 12 it is not too large and and so that prebored hole 12 is drilled difficult and is collapsed, and be conducive to be impacted at hole site 111
Hole.
Meanwhile the spacing between adjacent prebored hole 12 is 10~15cm, between specific adjacent prebored hole 12 between
Away from depending on landform.
In the present embodiment, prebored hole 12 is to carry out pore-forming using down-hole hammer, so as to be quickly obtained multiple prebored holes
12, to carry out subsequent bored concrete pile impact holing.
Construction process provided by the embodiment of the utility model, the steps include:
(1) surveying setting-out, 11 position of position punch stake；
(2) casing 13 is buried；
(3) pretreatment Completion of Drilling Hole is carried out using down-hole hammer, pore-forming range is from ground to design stake bottom absolute altitude；Pretreatment
Drilling is arranged in a circular formation, 100~300mm of diameter, 10~15cm of spacing；
(4) percussive drill is in place, utilizes jump bit pore-forming to design stake bottom absolute altitude.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (8)
1. improve rock stratum impact holing work efficiency pretreatment hole structure, which is characterized in that including circular in shape at hole location
Set and positioned at multiple prebored holes in hole site, it is described have at hole site be located at it is described at hole site immediately below
Stake bottom elevation location is designed, multiple prebored holes extend downward into design stake bottom elevation location.
2. as described in claim 1 improve rock stratum impact holing work efficiency pretreatment hole structure, which is characterized in that it is described at
It is surround outside hole site and is arranged with casing.
3. improving the pretreatment hole structure of rock stratum impact holing work efficiency as described in claim 1, which is characterized in that Duo Gesuo
Prebored hole is stated with the center of circle at hole site around arranged for interval.
4. as claimed in claim 3 improve rock stratum impact holing work efficiency pretreatment hole structure, which is characterized in that it is described at
The center of circle of hole site is equipped with a prebored hole, adjacent prebored hole uniform intervals arrangement.
5. such as the pretreatment hole structure of the described in any item raising rock stratum impact holing work efficiency of Claims 1-4, feature exists
In the circular in cross-section shape of the prebored hole.
6. improving the pretreatment hole structure of rock stratum impact holing work efficiency as claimed in claim 5, which is characterized in that described pre-
The diameter of drilling is 100~300mm.
7. such as the pretreatment hole structure of the described in any item raising rock stratum impact holing work efficiency of Claims 1-4, feature exists
In the spacing between the adjacent prebored hole is 10~15cm.
8. such as the pretreatment hole structure of the described in any item raising rock stratum impact holing work efficiency of Claims 1-4, feature exists
In the prebored hole carries out pore-forming using down-hole hammer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820515637.8U CN208220631U (en) | 2018-04-12 | 2018-04-12 | Improve the pretreatment hole structure of rock stratum impact holing work efficiency |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820515637.8U CN208220631U (en) | 2018-04-12 | 2018-04-12 | Improve the pretreatment hole structure of rock stratum impact holing work efficiency |
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| CN208220631U true CN208220631U (en) | 2018-12-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273417A (en) * | 2019-07-07 | 2019-09-24 | 韩少鹏 | A kind of architectural engineering cast-in-place pile construction method |
-
2018
- 2018-04-12 CN CN201820515637.8U patent/CN208220631U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273417A (en) * | 2019-07-07 | 2019-09-24 | 韩少鹏 | A kind of architectural engineering cast-in-place pile construction method |
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