CN109577341A - The anti-collapse construction method of rich water ovum erratic boulder soil body burning into sand stratum foundation pit major diameter fender post - Google Patents
The anti-collapse construction method of rich water ovum erratic boulder soil body burning into sand stratum foundation pit major diameter fender post Download PDFInfo
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- CN109577341A CN109577341A CN201811322043.6A CN201811322043A CN109577341A CN 109577341 A CN109577341 A CN 109577341A CN 201811322043 A CN201811322043 A CN 201811322043A CN 109577341 A CN109577341 A CN 109577341A
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- soil body
- erratic boulder
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- pile
- sand
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- 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
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses the anti-collapse construction methods of rich water ovum erratic boulder soil body burning into sand stratum foundation pit major diameter fender post, the method construction impact drill drilling pile of " bore one and jump one " or " bore one and jump two " is used first, by the percussion of impact drill by inter-pile soil body dense extrusion, churning driven drilling pile of then constructing between impact drill drilling pile.Effect of the invention is: 1., in rich water ovum erratic boulder soil body burning into sand stratum construction major diameter fender post, can greatly reduce and go along with sb. to guard him pile driving construction collapse hole risk；2. relative to all using impact drill drilling construction, construction efficiency is substantially increased.
Description
Technical field
The present invention relates to subway foundation pit major diameter fender post construction fields.It is more particularly related to a kind of rich water
Ovum erratic boulder soil body burning into sand strata metro foundation pit major diameter goes along with sb. to guard him pile construction method.
Background technique
It is many that sand-pebble layer major diameter goes along with sb. to guard him pile construction method, and wherein cast-in-situ bored pile is using relatively broad.Drilling fills
Note stake is broadly divided into spiral-digging pore bored concrete pile, cast-in-situ bored pile and manual pore-forming according to the difference of pore-forming technique and is perfused
Stake, this few class forming hole method is gone along with sb. to guard him in pile driving construction in sand-pebble layer using more at present.Rich water boulser bde is loosely organized,
Soil body partial size is big, ovum erratic boulder intensity is high, infiltration coefficient is big, and fender post drilling difficulty easily occurs in pore forming process, hole wall collapses
Etc. risks, seriously affect construction quality and progress；Meanwhile being mingled with Extra-fine sand or medium-sand seam in sand-pebble layer, it drills
It is easier to collapse hole in the process；It constructs in rich water boulser bde, ground disturbance is larger, and drilling is easily influenced by Adjacent Pile body construction,
If pile body is closer, hole quality is more difficult to ensure.Currently, it is mostly single that rich water boulser bde, which goes along with sb. to guard him pile construction method,
One rotary digging drilling hole construction technology takes the method for " bore one and jump one " or " bore one and jump two " to reduce the shadow to neighbouring pore-forming to the greatest extent
It rings, and rotary digging drilling hole construction technology single in practice of construction is still difficult to ensure hole quality.
Summary of the invention
The present invention is able to solve the problem of ovum erratic boulder soil body folder thin silt major diameter fender post pore-forming difficulty, floats for ovum
The anti-collapse hole construction of stone soil body folder thin silt major diameter fender post provides a kind of method.
The purpose of the present invention is achieved through the following technical solutions:
The anti-collapse construction method of rich water ovum erratic boulder soil body burning into sand stratum foundation pit major diameter fender post, first using " bore one and jump one "
Or the method construction impact drill drilling pile of " bore one and jump two ", by the percussion of impact drill by inter-pile soil body dense extrusion, so
The construction churning driven drilling pile between impact drill drilling pile afterwards.
It is preferred that the ovum erratic boulder soil body is extruded closely knit between stake under impact drill percussion.
It is preferred that being suitable for ovum erratic boulder soil body burning into sand stratum, the soil of ovum erratic boulder soil body burning into sand stratum from top to down
Layer is miscellaneous fill, silty clay, Extra-fine sand, land pebble, middle sand and land pebble.
The beneficial effects of the present invention are: 1. rich water ovum erratic boulder soil body burning into sand stratum construct major diameter fender post, can be significantly
Pile driving construction collapse hole risk is gone along with sb. to guard him in reduction；2. relative to all using impact drill drilling construction, construction efficiency is substantially increased.
Detailed description of the invention
Fig. 1 is that the particularly suitable ovum erratic boulder soil body of the present invention contains Flooding in Borehole；
Fig. 2 is drilled pile construction sequence.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing, but protection scope of the present invention is not limited to
It is as described below.
Ovum erratic boulder soil body burning into sand distribution of strata situation as shown in Figure 1, including<1-2>miscellaneous fill,<2-3>silty clay,<
3-4-1>Extra-fine sand,<3-8-1>land pebble,<3-8-2>land pebble,<3-8-3>land pebble, sand in<3-5-2>.The ovum erratic boulder soil body
Loosely, when constructing using churning driven, stake position pore-forming can preferably be completed by mud off, but that there are powder in land pebble is thin
When the interlayers such as sand, middle sand, mud off effect is poor, churning driven easy collapse hole when constructing to interlayers such as Extra-fine sand, middle sand, and uses punching
Collapse hole risk can preferably be controlled by hitting brill construction.As shown in Figure 2 for the improved bored pile construction in this stratum sequence, 1,2,
3 construct for percussive drilling, and 4,5,6,7 construct for rotary digging drilling hole.Rich water ovum erratic boulder soil body burning into sand stratum foundation pit major diameter fender post
Anti-collapse construction method is constructed using the method for " brill one jumps one " (such as Fig. 2 (a)) or " bore one and jump two " (such as Fig. 2 (b)) impact first
Drilled as holes stake, by the percussion of impact drill by inter-pile soil body dense extrusion, rotary digging of then constructing between impact drill drilling pile
Drilled as holes stake.
The present invention is to go along with sb. to guard him pile construction method based on existing sand-pebble layer major diameter to carry out certain improvement.Existing ovum
Erratic boulder stratum major diameter goes along with sb. to guard him pile driving construction using rotary digging drilled as holes, and " bore one and jump one " or " bore one and jump two " method is constructed, ovum
Loosely, easy collapse hole in work progress is easier to collapse hole if having Extra-fine sand, medium coarse sand interlayer in stratum, and collapse hole is tight on erratic boulder stratum
It is firm to will affect the ground soil body when weight, causes personnel equipment to damage so that pore-forming equipment topples；It can guarantee using impact drilled as holes
Hole quality, but the impact drilled as holes time is longer, and for the stake holes of more than 20 meters of depths, impact drill needs two days or so time, rotation
Digging to bore only needs several hours can be completed, and is greatly increased using the impact drill construction period.The present invention is on the basis of rotary digging drilled as holes
On combine impact drilled as holes, impact drill intersects with churning driven constructs, first using " jumping one every one " or " brill one jump two "
Method carry out impact drill construction, under impact drill percussion, the ovum erratic boulder soil body is extruded closely knit between stake, then among stake into
The construction of row churning driven, can greatly reduce churning driven collapse hole risk.
In a preferred embodiment, under impact drill percussion, the ovum erratic boulder soil body is extruded closely knit between stake.
In a preferred embodiment, be suitable for ovum erratic boulder soil body burning into sand stratum, ovum erratic boulder soil body burning into sand stratum from upper and
Under soil layer be miscellaneous fill, silty clay, Extra-fine sand, land pebble, middle sand and land pebble.
Present invention improves over ovum erratic boulder soil burning into sand strata metro foundation pit major diameters to go along with sb. to guard him pile construction method, is drilled to using impact
The two kinds of construction technology intersections in hole and rotary digging drilled as holes are constructed, and are solved ovum erratic boulder soil burning into sand strata metro foundation pit major diameter and are enclosed
Fender pile is constructed the problem of easy collapse hole, and construction efficiency is improved.Specific mechanism are as follows: using " bore one and jump one " or " bore one to jump
Then two " method construction impact drill drilling pile is applied by the percussion of impact drill by inter-pile soil body dense extrusion between stake
Work churning driven drilling pile can be mentioned since rotary digging drilled as holes is fast compared with impact drill speed of fulfiling hole with this while guaranteeing hole quality
High construction efficiency.
Present invention can ensure that the quality of ovum erratic boulder soil burning into sand stratum large diameter bored pile construction, avoids pore forming process
Middle collapse hole, while the pore-forming time can be greatlyd save using rotary digging drilled as holes, churning driven is utilized in conjunction with guarantee with impact drill and is applied
The construction time can be saved while working medium amount, improves construction efficiency.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is noted that all
Made any modifications, equivalent replacements, and improvements etc. within the spirit and principles in the present invention should be included in guarantor of the invention
Within the scope of shield.
Claims (3)
1. the anti-collapse construction method of rich water ovum erratic boulder soil body burning into sand stratum foundation pit major diameter fender post, it is characterised in that: use first
The method construction impact drill drilling pile of " bore one and jump one " or " bore one and jump two ", is squeezed inter-pile soil body by the percussion of impact drill
Densification is real, churning driven drilling pile of then constructing between impact drill drilling pile.
2. the anti-collapse construction method of rich water ovum erratic boulder soil body burning into sand stratum foundation pit major diameter fender post according to claim 1,
It is characterized by: the ovum erratic boulder soil body is extruded closely knit between stake under impact drill percussion.
3. the anti-collapse construction method of rich water ovum erratic boulder soil body burning into sand stratum foundation pit major diameter fender post according to claim 1,
It is characterized by: be suitable for ovum erratic boulder soil body burning into sand stratum, the soil layer of ovum erratic boulder soil body burning into sand stratum from top to down be miscellaneous fill,
Silty clay, Extra-fine sand, land pebble, middle sand and land pebble.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811322043.6A CN109577341A (en) | 2018-11-08 | 2018-11-08 | The anti-collapse construction method of rich water ovum erratic boulder soil body burning into sand stratum foundation pit major diameter fender post |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811322043.6A CN109577341A (en) | 2018-11-08 | 2018-11-08 | The anti-collapse construction method of rich water ovum erratic boulder soil body burning into sand stratum foundation pit major diameter fender post |
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| Publication Number | Publication Date |
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| CN109577341A true CN109577341A (en) | 2019-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811322043.6A Pending CN109577341A (en) | 2018-11-08 | 2018-11-08 | The anti-collapse construction method of rich water ovum erratic boulder soil body burning into sand stratum foundation pit major diameter fender post |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818713A (en) * | 2015-02-26 | 2015-08-05 | 武汉中力岩土工程有限公司 | Profile steel cement soil pile construction method adaptive to various stratums |
| CN105275381A (en) * | 2014-05-28 | 2016-01-27 | 宏润建设集团股份有限公司 | Drilling construction method for water-rich cobble stratum by utilizing impact drill |
| CN106087997A (en) * | 2016-07-26 | 2016-11-09 | 中铁建大桥工程局集团第五工程有限公司 | A kind of high latitude, high and cold Permafrost Area drilled pile construction engineering method |
| CN107237323A (en) * | 2017-05-23 | 2017-10-10 | 中铁建大桥工程局集团第工程有限公司 | Major diameter super thick boulder bed forming hole method |
| CN107842313A (en) * | 2017-11-28 | 2018-03-27 | 重庆华硕建设有限公司 | A kind of rotary drilling rig compact making hole construction technology |
-
2018
- 2018-11-08 CN CN201811322043.6A patent/CN109577341A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275381A (en) * | 2014-05-28 | 2016-01-27 | 宏润建设集团股份有限公司 | Drilling construction method for water-rich cobble stratum by utilizing impact drill |
| CN105275381B (en) * | 2014-05-28 | 2018-05-04 | 宏润建设集团股份有限公司 | Impact drill drilling construction method in rich water pebble layer |
| CN104818713A (en) * | 2015-02-26 | 2015-08-05 | 武汉中力岩土工程有限公司 | Profile steel cement soil pile construction method adaptive to various stratums |
| CN106087997A (en) * | 2016-07-26 | 2016-11-09 | 中铁建大桥工程局集团第五工程有限公司 | A kind of high latitude, high and cold Permafrost Area drilled pile construction engineering method |
| CN107237323A (en) * | 2017-05-23 | 2017-10-10 | 中铁建大桥工程局集团第工程有限公司 | Major diameter super thick boulder bed forming hole method |
| CN107842313A (en) * | 2017-11-28 | 2018-03-27 | 重庆华硕建设有限公司 | A kind of rotary drilling rig compact making hole construction technology |
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Application publication date: 20190405 |