CN110029659A - One-time hole forming construction method for manual hole digging pile combining hollow hole blasting and rotary digging - Google Patents
One-time hole forming construction method for manual hole digging pile combining hollow hole blasting and rotary digging Download PDFInfo
- Publication number
- CN110029659A CN110029659A CN201910318882.9A CN201910318882A CN110029659A CN 110029659 A CN110029659 A CN 110029659A CN 201910318882 A CN201910318882 A CN 201910318882A CN 110029659 A CN110029659 A CN 110029659A
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- pile
- hole
- digging
- center hole
- emptying aperture
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 238000005422 blasting Methods 0.000 title abstract description 5
- 239000011435 rock Substances 0.000 claims abstract description 32
- 238000005553 drilling Methods 0.000 claims abstract description 21
- 238000004880 explosion Methods 0.000 claims abstract description 21
- 239000002360 explosive Substances 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 241001252483 Kalimeris Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a one-time pore-forming construction method of a manual hole digging pile combining hollow hole blasting and rotary digging, which is characterized in that a pile center hole and peripheral hollow holes of the manual hole digging pile are lofted on the leveled ground, and a top hammer drilling machine is adopted to drill holes to respectively form the peripheral hollow holes and the pile center hole; filling explosive by taking the central hole of the pile as a blast hole and blasting the central hole of the pile, wherein an explosion pressure stress wave is reflected into a tensile stress wave through a peripheral hollow hole, and the rock is fractured at a reflecting surface to break the rock mass; and (4) rotary excavating the broken rock mass by using a rotary drilling rig to realize one-time hole forming of the manual hole digging pile. The invention particularly aims at the complete or more complete rock pile foundation with the depth not more than 15m and the rock mass integrity index not less than 0.55, and obtains remarkable economic and social benefits in various aspects such as accelerating the engineering progress, reducing the construction cost, ensuring the safety of personnel construction and the like.
Description
Technical field
The present invention relates to manual digging pile construction methods, and more specifically in particular to depth ≯ 15m, rock are continuous whole
Or the construction method of more complete artificial digging pile.
Background technique
For the artificial digging pile of rock matter pile foundation, there are mainly two types of construction methods in the prior art, and one is multi-segmentals
Explosion, and multi-segmental retaining wall excavates, but the process of its multiple Blasting Excavation is fairly time consuming, work efficiency is very low；Another kind is using height
The uninterrupted rotary digging of performance rotary drilling rig is excavated after the completion of grinding rock, and rotary drilling rig makes drill bit because hard grind consumes during this
Abrasion is quite serious, causes construction cost high.
Summary of the invention
The present invention is to provide a kind of the artificial of emptying aperture explosion combination rotary digging to avoid above-mentioned deficiency of the prior art
Caisson one-step pore-creating construction method, to shorten the caisson pore-forming time, overcome that rotary drilling rig is time-consuming and what bit wear was big lacks
Point reduces construction cost.
The present invention adopts the following technical scheme that in order to solve the technical problem
The characteristics of artificial digging pile one-step pore-creating construction method of emptying aperture explosion combination rotary digging of the present invention is as follows
It carries out:
Step 1: passing through the pile center hole of surveying and locating artificial digging pile and periphery emptying aperture on grade；
Step 2: drilling being implemented using top hammer drilling machine, drilling carries out one by one by the emptying aperture of periphery, finally to pile center hole
Terminate；
Step 3: using the pile center hole as blasthole, explosive is loaded in the pile center hole, and in the upper of pile center hole
Section forms plug-hole section by blocking；Implement explosion for the pile center hole, the compression stress wave that explodes is reflected into drawing through periphery emptying aperture
Stress wave makes rock crushing by rock drawing crack at reflecting surface；
Step 4: carrying out rotary digging for broken rock mass using rotary drilling rig, realize the one-step pore-creating of artificial digging pile.
The characteristics of artificial digging pile one-step pore-creating construction method of emptying aperture explosion combination rotary digging of the present invention, lies also in: the stake
The aperture of centre bore is 90~130mm, and pile center hole is 50~100cm with respect to the ultra-deep h2 of caisson hole baseline；The periphery
The aperture of emptying aperture is 70~115mm, and periphery emptying aperture is circumferentially uniformly distributed, and the spacing L of adjacent two periphery emptying apertures is on circumference
40~50cm, periphery emptying aperture are 30~50cm with respect to the ultra-deep h1 of caisson hole baseline.
The characteristics of artificial digging pile one-step pore-creating construction method of emptying aperture explosion combination rotary digging of the present invention, lies also in: setting institute
The length for stating plug-hole section is 100~200cm.
The characteristics of artificial digging pile one-step pore-creating construction method of emptying aperture explosion combination rotary digging of the present invention, lies also in: the people
Work caisson refers to the complete or more complete rock pile foundation for depth ≯ 15m, rock mass integrity index ≮ 0.55.
Compared with the prior art, the invention has the advantages that:
1, the present invention combines explosion with rotary digging, first passes through explosion for rock blasting fragmentation in artificial digging pile, then benefit
Quickly the rock rotary digging of fragmentation is come out with rotary drilling rig, realizes disposal pore-forming；Caisson digging time is substantially reduced, and
Therefore the security risk of personnel's underground construction is reduced.
2, the method for the present invention largely reduced the damage of the hard grind to drill bit of drilling machine, effectively reduce the use of drilling bit of rotary-digging drilling rig
And maintenance cost, reduce construction cost.
3, implement explosion for pile center hole in the present invention, the compression stress wave that explodes is reflected into tensile stress through periphery emptying aperture
Wave makes rock crushing by rock drawing crack at reflecting surface, is convenient for the light spiral-digging pore of rotary drilling rig, periphery is uniformly distributed sky
Hole, effective protection artificial digging pile peripheral rock, and smooth arc surface can be created for artificial digging pile pile body.
Detailed description of the invention
Fig. 1 is pile center hole and periphery emptying aperture plan view in the present invention；
Fig. 2 is pile center hole and periphery emptying aperture facade arrangement schematic diagram in the present invention；
Fig. 3 loads explosive schematic diagram as blasthole for pile center hole in the present invention；
Fig. 4 is the method for the present invention construction completion into hole pattern；
Figure label: 1 pile center hole, 2 periphery emptying apertures, 3 explosives, 4 plug-hole sections, 5 hole baselines, H are caisson depth, and h1 is
Periphery emptying aperture ultra-deep, h2 are pile center hole ultra-deep.
Specific embodiment
Referring to figure 1, figure 2 and figure 3, the artificial digging pile one-step pore-creating construction party of the present embodiment hollow hole explosion combination rotary digging
Method is to carry out as follows:
Step 1: passing through the pile center hole 1 of surveying and locating artificial digging pile and periphery emptying aperture 2 on grade.
Step 2: implementing to drill vertically downward using top hammer drilling machine, drilling carries out one by one by periphery emptying aperture 2, finally extremely
Pile center hole 1 terminates；The aperture that pile center hole 1 is arranged is 90~130mm, ultra-deep of the pile center hole 1 with respect to caisson hole baseline 5
H2 is 50~100cm, therefore the hole depth in pile center hole 1 is the sum of caisson depth H and ultra-deep h2；The aperture of periphery emptying aperture 2 is
70~115mm, periphery emptying aperture 2 are circumferentially uniformly distributed, and the spacing L of adjacent two periphery emptying apertures 2 is 40~50cm, week on circumference
Side emptying aperture 2 is 30~50cm with respect to the ultra-deep h1 of caisson hole baseline 5, and the hole depth of periphery emptying aperture 2 is caisson depth H and ultra-deep
The sum of h1；In specific implementation, the aperture in pile center hole 1 should be greater than the aperture of periphery emptying aperture 2.
Step 3: being blasthole with pile center hole 1, explosive 3 is loaded in pile center hole 1, and logical in the upper section in pile center hole 1
It crosses blocking and forms plug-hole section 4, the length of setting plug-hole section 4 is 100~200cm；Implement explosion for pile center hole 1；Explosive is quick-fried
Compression stress wave is transmitted after fried in country rock, generates radial explosion compression, explosion compression stress wave is reflected into through periphery emptying aperture 2 to week
The tensile stress wave of side emptying aperture 2, makes rock crushing.
Step 4: rotary digging is carried out for broken rock mass using rotary drilling rig, realizes the one-step pore-creating of artificial digging pile, and
And form smooth arc surface.
Construction method of the present invention is particularly suitable for depth ≯ 15m, the complete or more complete rock of rock mass complete exponential ≮ 0.55
Matter pile foundation, can fast pore-creating, not only saved caisson digging time but also reduced artificial underground construction security risk, reduce rotation
Dig drill bit reinforcing and maintenance cost.According to " Code for investigation of geotechnical engineering GB50021 ", rock mass integrity index is rock mass compression
Square of the ratio between wave velocity and sillar compressional wave, table 1 show rock mass completeness classification.
The classification of 1 rock mass completeness of table
| Integrated degree | Completely | It is more complete | It is relatively broken | It is broken | It is smashed to pieces |
| Perfection Index | Greater than 0.75 | 0.75-0.55 | 0.55-0.35 | 0.35-0.15 | Less than 0.15 |
Construction method of the present invention is applied successfully to Xintai City to the village Tai Er (Lu Sujie) highway Xintai City to the village Tai Er kalimeris and collects
It is the caisson of 1.8m, a length of 12m of stake, setting for diameter in artificial digging pile engineering of the three contract section depth of section less than 15m
Pile center's bore dia is 130mm, and uniformly distributed 13 periphery emptying apertures, the diameter of periphery emptying aperture are set on the circumferential position that diameter is 1.8m
It is set to 115mm, the smooth rounding of pore-forming applies artificial caisson engineering as shown in figure 4, effectively shorten the manual digging pile construction period
Work is speeding up the work, is reducing construction cost, ensuring that the various aspects such as personnel's construction safety obtain distinct economic and society
It can benefit.
Claims (4)
1. the artificial digging pile one-step pore-creating construction method of emptying aperture explosion combination rotary digging, it is characterized in that carrying out as follows:
Step 1: passing through the pile center hole (1) of surveying and locating artificial digging pile and periphery emptying aperture (2) on grade；
Step 2: drilling being implemented using top hammer drilling machine, drilling carries out one by one by periphery emptying aperture (2), finally to pile center hole
(1) terminate；
Step 3: with the pile center hole (1) for blasthole, loading explosive (3) in the pile center hole (1), and in pile center hole
(1) upper section forms plug-hole section (4) by blocking；Implement explosion for the pile center hole (1), the compression stress wave that explodes is through periphery
Emptying aperture (2) is reflected into tensile stress wave, by rock drawing crack at reflecting surface, makes rock crushing；
Step 4: carrying out rotary digging for broken rock mass using rotary drilling rig, realize the one-step pore-creating of artificial digging pile.
2. the artificial digging pile one-step pore-creating construction method of emptying aperture explosion combination rotary digging according to claim 1, feature
It is:
The aperture of the pile center hole (1) is 90~130mm, and pile center hole (1) is with respect to the ultra-deep h2 of caisson hole baseline (5)
50~100cm；The aperture of the periphery emptying aperture (2) is 70~115mm, and periphery emptying aperture (2) is circumferentially uniformly distributed, phase on circumference
The spacing L of adjacent two periphery emptying apertures (2) is 40~50cm, and periphery emptying aperture (2) is 30 with respect to the ultra-deep h1 of caisson hole baseline (5)
~50cm.
3. the artificial digging pile one-step pore-creating construction method of emptying aperture explosion combination rotary digging according to claim 1 or 2, special
Sign is: the length that the plug-hole section (4) is arranged is 100~200cm.
4. the artificial digging pile one-step pore-creating construction method of emptying aperture explosion combination rotary digging according to claim 1, feature
Be: the artificial digging pile refers to the complete or more complete rock stake for depth ≯ 15m, rock mass integrity index ≮ 0.55
Base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910318882.9A CN110029659A (en) | 2019-04-19 | 2019-04-19 | One-time hole forming construction method for manual hole digging pile combining hollow hole blasting and rotary digging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910318882.9A CN110029659A (en) | 2019-04-19 | 2019-04-19 | One-time hole forming construction method for manual hole digging pile combining hollow hole blasting and rotary digging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110029659A true CN110029659A (en) | 2019-07-19 |
Family
ID=67239291
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910318882.9A Pending CN110029659A (en) | 2019-04-19 | 2019-04-19 | One-time hole forming construction method for manual hole digging pile combining hollow hole blasting and rotary digging |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595306A (en) * | 2019-09-05 | 2019-12-20 | 中国科学技术大学 | Construction method of efficient blasting pile foundation based on principle that external free surface forms tensile wave superposition boundary region |
| CN110820726A (en) * | 2019-11-18 | 2020-02-21 | 中国葛洲坝集团路桥工程有限公司 | Pile foundation pore-forming method in environment where disturbance is not suitable for surrounding of hard rock in mountainous area |
| CN111140168A (en) * | 2020-01-02 | 2020-05-12 | 中南大学 | Hard rock stratum punching pile hole forming pretreatment method |
| CN111705815A (en) * | 2020-05-28 | 2020-09-25 | 三明学院 | Hard rock stratum pre-drilling static blasting man-cut pile auxiliary construction method |
| CN113737781A (en) * | 2021-09-13 | 2021-12-03 | 中建一局集团第二建筑有限公司 | Combined type hole digging pile construction structure and construction method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595306A (en) * | 2019-09-05 | 2019-12-20 | 中国科学技术大学 | Construction method of efficient blasting pile foundation based on principle that external free surface forms tensile wave superposition boundary region |
| CN110820726A (en) * | 2019-11-18 | 2020-02-21 | 中国葛洲坝集团路桥工程有限公司 | Pile foundation pore-forming method in environment where disturbance is not suitable for surrounding of hard rock in mountainous area |
| CN111140168A (en) * | 2020-01-02 | 2020-05-12 | 中南大学 | Hard rock stratum punching pile hole forming pretreatment method |
| CN111140168B (en) * | 2020-01-02 | 2021-05-04 | 中南大学 | Hard rock stratum punching pile hole forming pretreatment method |
| CN111705815A (en) * | 2020-05-28 | 2020-09-25 | 三明学院 | Hard rock stratum pre-drilling static blasting man-cut pile auxiliary construction method |
| CN113737781A (en) * | 2021-09-13 | 2021-12-03 | 中建一局集团第二建筑有限公司 | Combined type hole digging pile construction structure and construction method thereof |
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Application publication date: 20190719 |