CN114482083A - Anti-slide pile construction method for existing road widening section cutting rock slope - Google Patents
Anti-slide pile construction method for existing road widening section cutting rock slope Download PDFInfo
- Publication number
- CN114482083A CN114482083A CN202011151246.0A CN202011151246A CN114482083A CN 114482083 A CN114482083 A CN 114482083A CN 202011151246 A CN202011151246 A CN 202011151246A CN 114482083 A CN114482083 A CN 114482083A
- Authority
- CN
- China
- Prior art keywords
- slide
- pile
- piles
- numbered
- resistant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010276 construction Methods 0.000 title claims abstract description 44
- 239000011435 rock Substances 0.000 title claims abstract description 32
- 238000005520 cutting process Methods 0.000 title claims description 10
- 238000005553 drilling Methods 0.000 claims abstract description 20
- 238000009412 basement excavation Methods 0.000 claims abstract description 17
- 238000005422 blasting Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002689 soil Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 239000002360 explosive Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 2
- 238000009415 formwork Methods 0.000 abstract description 3
- 230000009191 jumping Effects 0.000 abstract description 2
- 238000004904 shortening Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
-
- 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
-
- 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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to a cut rock slope slide-resistant pile construction method of an existing road widening section, which is characterized in that slide-resistant piles are numbered sequentially from 1 to N and are divided into odd-numbered slide-resistant piles and even-numbered slide-resistant piles; firstly, excavating odd-number anti-slide piles, drilling rocks around pile holes by using a water mill drilling machine during excavation, and crushing centers by using a blasting mode; after the odd-numbered anti-slide piles are completed, excavating the soil body in front of the piles to the slope bottom, then excavating the underground sections of the even-numbered anti-slide piles, wherein the excavating mode is consistent with that of the odd-numbered anti-slide piles; and finally, pouring the ground sections of the anti-slide piles with even numbers in a mode of erecting the formwork on the ground. The invention adopts jumping pile excavation, and the ground section of the even number piles constructed in the later period adopts a mode of on-ground vertical mold cast-in-place, thereby greatly shortening the construction period and saving the construction cost; the pile hole excavation adopts the mode of combining the water mill drilling machine and the micro-blasting excavation, is not limited by a construction site, and has small influence on the road traffic.
Description
Technical Field
The invention belongs to the technical field of road construction, relates to roadbed protection support engineering, and particularly relates to a method for constructing anti-slide piles on existing road widening section cutting rock slopes.
Background
In the existing highway widening project, for cutting rock slope, in order to prevent the slope from collapsing, single-row anti-slide piles are required to be arranged along the slope bottom outside the roadbed widening line.
One of the conventional anti-slide pile construction modes is a manual hole digging and blasting matched mode, the mode is convenient to construct, large equipment is not needed, the requirement on a field is low, the labor intensity is high, the single pile construction speed is low, and the safety of the existing expressway is greatly influenced; the other type is a mechanical hole digging construction mode, a rotary drilling rig is usually adopted, the construction is fast, the labor intensity is low, the influence on the existing expressway is small, the requirement on the field is high, the use of large equipment is limited, and the method is not suitable for the construction of the anti-slide pile of the cut rock slope of the widening section of the existing expressway.
Disclosure of Invention
The invention aims to provide a construction method of the slide-resistant pile suitable for the existing road widening section cutting rock slope, which aims at the limitation of slide-resistant pile construction in the prior art, reduces the influence of construction on the existing road traffic, improves the construction efficiency and shortens the construction period.
The technical scheme of the invention is as follows:
a cut rock slope slide-resistant pile construction method for an existing road widening section is characterized by comprising the following steps:
(1) before the anti-slide pile construction, excavating the corresponding section of cutting to the elevation of the anti-slide pile top, completing the corresponding upper slope protection and drainage engineering construction, and ensuring the stability of the upper slope;
(2) pile position measurement lofting is carried out, the position of the slide-resistant pile is determined, the slide-resistant piles are sequentially numbered from 1 to N, and the slide-resistant pile is divided into an odd-numbered slide-resistant pile and an even-numbered slide-resistant pile;
(3) excavating odd-number anti-slide piles: firstly, drilling peripheral rocks of a pile hole by using a water mill drilling machine, separating the central rocks of the pile hole from the peripheral rocks, simultaneously forming a free face for blasting excavation, punching the central rocks of the pile hole to be used as blast holes, installing explosives for blasting, and ventilating and discharging slag after blasting is finished; repeating the working procedures until the pile hole is excavated to the designed elevation of the pile bottom; after the pore-forming quality is detected to be qualified, installing odd-number slide-resistant pile reinforcement cages and pouring odd-number slide-resistant pile concrete;
(4) after the odd-number anti-slide piles are detected to be completely qualified and the concrete strength reaches 100% of the designed strength, excavating the inter-pile and pre-pile soil bodies of the finished odd-number anti-slide piles to the slope bottom;
(5) after the soil body is excavated, excavating underground sections of even-numbered anti-slide piles, wherein the excavation mode is consistent with that of odd-numbered anti-slide piles; after the pore-forming quality is detected to be qualified, installing an underground section reinforcement cage of the even-numbered anti-slide pile, reserving a lengthening part, and pouring underground section concrete of the even-numbered anti-slide pile;
(6) and installing the upper section reinforcement cage of the even-numbered anti-slide pile, installing a template, and pouring the upper section concrete of the even-numbered anti-slide pile to complete the construction of all anti-slide piles.
The invention adopts jumping pile excavation on the construction process, wherein odd piles are excavated firstly, and even piles are excavated later. The self-stability capability of the rock slope and the resisting effect of the odd piles constructed in the early stage on the slope are fully utilized, soil bodies between piles and in front of the piles are excavated after the odd piles are excavated, the ground sections of the even piles constructed in the later stage are adjusted to be in-situ cast by the ground vertical formwork, the construction period is greatly shortened, and the construction cost is saved.
According to the invention, a mode of combining a water mill drilling machine and micro-blasting excavation is adopted during pile hole excavation, the rocks around the pile hole are drilled by the water mill drilling machine, the original rocks outside the pile hole are not damaged, the rocks around the pile are in a stable state, and the pile hole can be ensured not to collapse without constructing a retaining wall; the water mill drilling machine belongs to small-sized equipment and is not limited by a construction site; the blasting function is to break the middle rock for slag tapping, so the number of blastholes and the explosive amount are only one third of the total blasting scheme, the blasting noise is small, the scattered objects are easy to control, and the influence on the existing expressway is small.
Drawings
FIG. 1 is a flow chart of the construction of the present invention;
FIG. 2 is a schematic diagram of a pile top cutting slope excavation structure;
fig. 3 is a schematic view of the arrangement of slide resistant piles;
FIG. 4 is a schematic diagram of excavation construction of odd-numbered slide-resistant piles;
FIG. 5 is a schematic diagram of a state that a water mill drills to drill a core of rock around a pile hole;
FIG. 6 is a schematic view of the shot hole distribution on a core;
FIG. 7 is a schematic view of the structure of the excavation of the soil body in front of the pile;
FIG. 8 is a schematic view of a construction structure of a lower section of an even-numbered slide-resistant pile;
fig. 9 is a schematic construction structure of an upper section of an even-numbered slide-resistant pile.
Detailed Description
The construction process of the invention is shown in figure 1, and the concrete construction process is as follows:
(1) as shown in fig. 2, before the anti-slide pile 1 is constructed, the cut slope 2 of the corresponding section is excavated to the elevation of the top of the anti-slide pile, so that the corresponding protection and drainage engineering construction of the upper slope is completed, and the stability of the upper slope is ensured;
(2) as shown in fig. 3, pile position measurement lofting is performed, the position of each slide-resistant pile 1 is determined, the slide-resistant piles are numbered sequentially from 1 to N, and the slide-resistant piles are divided into odd-numbered slide-resistant piles 11 and even-numbered slide-resistant piles 12;
(3) as shown in fig. 4, 5 and 6, excavating the odd-numbered slide-resistant piles 11: firstly, drilling peripheral rocks 3 of a pile hole by using a water mill drilling machine, separating the central rocks of the pile hole from the peripheral rocks, simultaneously forming a free face for blasting excavation, then drilling holes on the central rocks of the pile hole to be used as blast holes 4, installing explosives for blasting, and after blasting is finished, discharging slag by using a slag discharging machine; repeating the working procedures until the pile hole is excavated to the designed elevation of the pile bottom; after the pore-forming quality is detected to be qualified, installing odd-number slide-resistant pile reinforcement cages and pouring odd-number slide-resistant pile concrete;
(4) as shown in fig. 7, after all the odd-numbered anti-slide piles are detected to be qualified and the concrete strength reaches 100% of the designed strength, excavating inter-pile and pre-pile soil bodies 5 of the finished odd-numbered anti-slide piles to the slope bottom;
(5) as shown in fig. 8, after the soil body is excavated, excavating the underground sections 121 of the even-numbered anti-slide piles 12 in a manner consistent with that of the odd-numbered anti-slide piles; after the pore-forming quality is detected to be qualified, installing an underground section reinforcement cage of the even-numbered anti-slide pile, reserving a lengthening part, and pouring underground section concrete of the even-numbered anti-slide pile;
(6) as shown in fig. 9, the reinforcement cage of the upper section 122 of the even-numbered slide-resistant pile is installed, the formwork is installed, and the concrete of the upper section of the even-numbered slide-resistant pile is poured to complete the construction of all the slide-resistant piles.
During concrete construction, in order to increase the downward pressure of the water mill drilling machine and accelerate the drilling progress, a fulcrum reaction frame can be erected at a proper position at the top of the water mill drilling machine, and a back pressure fulcrum effect is provided for the drilling machine.
The diameter of a drill hole of the adopted water mill drilling machine is 16cm, and the depth of the drill hole is 70 cm; the blast holes are arranged in a rectangular shape, the distance is 40cm, the depth is 100cm, the diameter is 50mm, and the charge of each blast hole is 100 g.
In order to improve the construction efficiency, the longitudinal length of a construction section can be 10-15 m, and the same procedure of adjacent sections is carried out in a staggered mode, so that the flow process is formed.
Excavating the soil body before the pile section by section from two ends of the construction section to the middle; considering that the lower side slope is rock, the slope rate of the lower side slope is implemented according to the ratio of 1:0, and the excavation amount of the mountain is reduced.
Claims (3)
1. A cut rock slope slide-resistant pile construction method for an existing road widening section is characterized by comprising the following steps:
(1) before the anti-slide pile construction, excavating the corresponding section of cutting to the elevation of the anti-slide pile top, completing the corresponding upper slope protection and drainage engineering construction, and ensuring the stability of the upper slope;
(2) pile position measurement lofting is carried out, the position of the slide-resistant pile is determined, the slide-resistant piles are sequentially numbered from 1 to N, and the slide-resistant pile is divided into an odd-numbered slide-resistant pile and an even-numbered slide-resistant pile;
(3) excavating odd-number anti-slide piles: firstly, drilling peripheral rocks of a pile hole by using a water mill drilling machine, separating the central rocks of the pile hole from the peripheral rocks, simultaneously forming a free face for blasting excavation, punching the central rocks of the pile hole to be used as blast holes, installing explosives for blasting, and ventilating and discharging slag after blasting is finished; repeating the working procedures until the pile hole is excavated to the designed elevation of the pile bottom; after the pore-forming quality is detected to be qualified, installing odd-number slide-resistant pile reinforcement cages and pouring odd-number slide-resistant pile concrete;
(4) after the odd-number anti-slide piles are detected to be completely qualified and the concrete strength reaches 100% of the designed strength, excavating the inter-pile and pre-pile soil bodies of the finished odd-number anti-slide piles to the slope bottom;
(5) after the soil body is excavated, excavating underground sections of even-numbered anti-slide piles, wherein the excavation mode is consistent with that of odd-numbered anti-slide piles; after the pore-forming quality is detected to be qualified, installing an underground section reinforcement cage of the even-numbered anti-slide pile, reserving a lengthening part, and pouring underground section concrete of the even-numbered anti-slide pile;
(6) and installing the upper section reinforcement cage of the even-numbered anti-slide pile, installing a template, and pouring the upper section concrete of the even-numbered anti-slide pile to complete the construction of all anti-slide piles.
2. The existing road widening section cutting rock slope slide-resistant pile construction method according to claim 1, characterized in that: the diameter of a drill hole of the water mill drilling machine is 16cm, and the depth of the drill hole is 70 cm; the blast holes are arranged in a rectangular shape, the distance is 40cm, the depth is 100cm, the diameter is 50mm, and the charge of each blast hole is 100 g.
3. The existing road widening section cutting rock slope slide-resistant pile construction method according to claim 1, characterized in that: excavating the soil body before the pile section by section from two ends of the construction section to the middle; considering that the lower side slope is rock, the slope rate of the lower side slope is implemented according to the ratio of 1:0, and the excavation amount of the mountain is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011151246.0A CN114482083B (en) | 2020-10-25 | 2020-10-25 | Construction method for cutting rock slope slide-resistant pile of existing road widening section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011151246.0A CN114482083B (en) | 2020-10-25 | 2020-10-25 | Construction method for cutting rock slope slide-resistant pile of existing road widening section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114482083A true CN114482083A (en) | 2022-05-13 |
| CN114482083B CN114482083B (en) | 2024-04-26 |
Family
ID=81471317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011151246.0A Active CN114482083B (en) | 2020-10-25 | 2020-10-25 | Construction method for cutting rock slope slide-resistant pile of existing road widening section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114482083B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0470401A (en) * | 1990-07-10 | 1992-03-05 | Kensetsu Kiso Eng Co Ltd | Road widening construction |
| CN205314116U (en) * | 2016-01-13 | 2016-06-15 | 重庆交通大学 | Continuous type of combined type drilling cling compound structure |
| US20190127941A1 (en) * | 2017-10-31 | 2019-05-02 | Earth, Inc. | Sheet pile retaining wall system |
| CN110670605A (en) * | 2019-09-16 | 2020-01-10 | 中冶交通建设集团有限公司 | Mountain road slope reinforcing method |
| 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 |
| CN211472527U (en) * | 2019-11-20 | 2020-09-11 | 中铁十二局集团第一工程有限公司 | Highway reconstruction and extension engineering high slope construction safety protection structure |
-
2020
- 2020-10-25 CN CN202011151246.0A patent/CN114482083B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0470401A (en) * | 1990-07-10 | 1992-03-05 | Kensetsu Kiso Eng Co Ltd | Road widening construction |
| CN205314116U (en) * | 2016-01-13 | 2016-06-15 | 重庆交通大学 | Continuous type of combined type drilling cling compound structure |
| US20190127941A1 (en) * | 2017-10-31 | 2019-05-02 | Earth, Inc. | Sheet pile retaining wall system |
| CN110670605A (en) * | 2019-09-16 | 2020-01-10 | 中冶交通建设集团有限公司 | Mountain road slope reinforcing method |
| 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 |
| CN211472527U (en) * | 2019-11-20 | 2020-09-11 | 中铁十二局集团第一工程有限公司 | Highway reconstruction and extension engineering high slope construction safety protection structure |
Non-Patent Citations (1)
| Title |
|---|
| 林同立: "改扩建高速公路路堑边坡拓宽方案对比分析", 《矿冶工程》, vol. 34, no. 6, pages 18 - 21 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114482083B (en) | 2024-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104947690B (en) | Grooving construction method for embedding underground continuous wall into rock | |
| CN109139104B (en) | Drainage construction method for tunnel penetrating through clastic rock steep-dip reverse-thrust water-rich fault | |
| CN106930276B (en) | The construction method of the deep hole blasting of rotary digging bored concrete pile and conduit rotary digging removing obstacles | |
| CN107905799B (en) | Reinforced structure of high-speed rail tunnel bottom water passing karst cave and construction method thereof | |
| CN104153352A (en) | Karst geology rotary-drilling bored concrete pile hole forming process | |
| CN103046931B (en) | Method for forming holes of vertical shaft/pilot shaft through impact type drilling machine in impacting mode | |
| CN102071683A (en) | Water drill dug pile construction method | |
| CN104532818A (en) | Treatment method for strip mine goaf | |
| CN105649012A (en) | Construction method for bored pile of subway station enclosure structure of upper-soft lower-hard ground | |
| CN110821500B (en) | Large-section tunnel excavation and support construction method for penetrating through earth-rock boundary stratum | |
| CN110847929B (en) | Tunnel portal section pre-reinforcing and excavating construction method based on partition blasting | |
| CN110863832B (en) | Large-section tunnel stability control construction method for penetrating through earth-rock boundary stratum | |
| CN111023930B (en) | Tunnel step excavation method | |
| CN112177635A (en) | Construction method of step multiple advanced small guide pipe and construction method of overlapped tunnel | |
| CN105019431B (en) | Crush and complete alternate steep dip stratified rock masses Large Diameter Super-long Bored Piles construction method | |
| CN104846811A (en) | Construction method of carrier pile of various technical line productions | |
| CN112145203A (en) | Full-face advancing type sectional grouting construction method and overlapped tunnel construction method | |
| CN112281897A (en) | Construction method of bridge pile foundation | |
| CN114482083B (en) | Construction method for cutting rock slope slide-resistant pile of existing road widening section | |
| CN113847029B (en) | Surrounding column extraction method for underground mine high and large point column | |
| CN216159751U (en) | Anti-slide pile hole digging construction structure | |
| CN113737781B (en) | Combined type hole digging pile construction structure and construction method thereof | |
| CN109113054A (en) | A kind of reclaimation area complex geological condition cast-in-situ bored pile multimachine combined construction method | |
| CN205100226U (en) | Underground continuous wall goes into rock grooving construction equipment | |
| CN113006802A (en) | Tunnel reverse step excavation construction method suitable for thin overburden stratum |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |