CN108547628B - Quick construction method for pipe-jacking working well in upper-soft and lower-hard stratum - Google Patents
Quick construction method for pipe-jacking working well in upper-soft and lower-hard stratum Download PDFInfo
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- CN108547628B CN108547628B CN201810475862.8A CN201810475862A CN108547628B CN 108547628 B CN108547628 B CN 108547628B CN 201810475862 A CN201810475862 A CN 201810475862A CN 108547628 B CN108547628 B CN 108547628B
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- jacking
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- pile hole
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- 238000010276 construction Methods 0.000 title claims abstract description 52
- 238000005553 drilling Methods 0.000 claims abstract description 34
- 239000002689 soil Substances 0.000 claims abstract description 14
- 239000011435 rock Substances 0.000 claims abstract description 11
- 238000004873 anchoring Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000009412 basement excavation Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Soil Sciences (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Earth Drilling (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a quick construction method of a pipe-jacking working well in a soft upper stratum and a hard lower stratum, which comprises the steps of leveling a field, measuring lofting and positioning a pile hole; drilling on an upper soil layer by adopting a rotary drilling machine, wherein a drill bit of the rotary drilling machine exits from a pile hole and a pile casing is placed into the pile hole every time the rotary drilling machine drills for a certain distance; repeating the method until the drilling reaches the lower basal rock layer, and anchoring all the pile casings in the upper soil layer; drilling on the lower basal rock layer by using the rotary drilling machine continuously until the drilling reaches a specified elevation; transversely excavating the hole wall at the bottom of the pile hole to form a jacking pipe jacking operation space, wherein the jacking pipe jacking operation space is provided with an opening which can enable a jacking pipe to be constructed to enter the jacking pipe jacking operation space; installing a jacking device in the jacking operation space of the jacking pipe; and transversely excavating the lower foundation layer at the bottom of the pile hole and at the position of the pipe jacking construction, and jacking the pipe jacking construction through a jacking device. The invention reduces the construction workload, reduces the construction difficulty, shortens the construction period and reduces the influence on the environment.
Description
Technical Field
The invention relates to the field of construction, in particular to a quick construction method of a pipe jacking working well with a soft upper layer and a hard lower layer.
Background
The pipe-jacking construction is a non-excavation construction method, and is a pipeline burying construction technology without excavation or with few excavations. The technology thoroughly solves the problems of damage to urban buildings, road traffic blockage and the like in pipeline embedding construction, and has obvious advantages in soil stabilization and environmental protection. This is very important for cities with heavy traffic, dense population, numerous ground buildings and complex underground pipelines, which will create a clean, comfortable and beautiful environment for the cities. In the construction environment of upper soil layer, lower floor's basement stratum, according to conventional construction method, at first need excavate a foundation ditch, for the hoist and mount of convenient push pipe, the construction area of foundation ditch is great usually, and corresponding area to lower floor's basement stratum excavation is also great, can cause certain influence to the surrounding environment. In addition, because the hardness of the foundation rock stratum is higher, the excavation difficulty is higher, and meanwhile, the construction period is correspondingly prolonged.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a quick construction method for a pipe-jacking working well with a soft upper layer and a hard lower layer, which reduces the construction difficulty, shortens the construction period and reduces the influence on the environment.
In order to solve the technical problems, the invention adopts the following technical scheme:
a quick construction method for a pipe jacking working well in a soft upper stratum and a hard lower stratum comprises the following steps:
(1) leveling the field, and positioning the position of the pile hole by measuring lofting;
(2) drilling on an upper soil layer by using a rotary drilling machine, wherein when the rotary drilling machine drills for a certain distance, a drill bit of the rotary drilling machine exits from a pile hole, and a pile casing is placed into the pile hole to enable the pile casing to fall;
(3) repeating the step (2) until the pile is drilled on the lower foundation layer, splicing two adjacent pile casings in the drilled pile hole end to end, placing the casing at the lowest end on the lower foundation layer, extending a plurality of casing to the hole opening position of the drilled pile hole, and anchoring all the casing in the upper soil layer;
(4) drilling on the lower basal rock layer by using the rotary drilling machine continuously until the drilling reaches a specified elevation;
(5) transversely excavating and widening the pile hole bottom and the hole wall on the opposite side of the pipe jacking construction position to form a pipe jacking operation space for horizontally placing the jacking pipe, wherein the pipe jacking operation space is provided with an opening for enabling the jacking pipe to be constructed to enter the pipe jacking operation space, the width of the opening is greater than the diameter of the jacking pipe, and the height of the opening is equal to the height of the opening
Wherein c is the length of the jacking pipe, and b is the inner diameter of the pile casing;
(6) hardening the ground in the jacking operation space and the ground in the pile hole of the jacking pipe;
(7) a jacking device for jacking the jacking pipe is arranged in the jacking operation space of the jacking pipe;
(8) and transversely excavating the lower foundation layer at the bottom of the pile hole and at the position of the pipe jacking construction, and jacking the pipe jacking construction through a jacking device.
According to the method, a rotary excavator drilling mode is adopted, firstly, segmented drilling is carried out in an upper soil layer, the pile casing is installed after each segment of drilling is finished, the pile casing sinks under the action of gravity, therefore, when the rotary excavator drills into a lower base rock layer, the bottom pile casing also sinks onto the base rock layer, and the pile casings are spliced together end to the position of a pile opening, so that pile holes in the upper soil layer are protected by means of the pile casings, and the soil layer is prevented from collapsing into the pile holes. After the pile casing in the pile hole in the upper soil layer is installed, drilling the lower-layer foundation layer until the drilling operation is completed, and then excavating a jacking pipe jacking operation space to facilitate the horizontal jacking and jacking operation of jacking pipes. The jacking pipe to be constructed is lifted downwards from a pile hole orifice, the inner diameter of the whole pile casing is not large, so that the jacking pipe can only be lowered by adopting a vertical or inclined mode with a small angle when being lifted downwards, the jacking pipe needs to be horizontally placed after being lowered to the bottom of the hole, jacking construction operation is convenient to carry out, the jacking pipe enters a jacking operation space through an opening, the height of the opening is calculated according to the maximum inclined angle of the jacking pipe in the pile casing through the Pythagorean theorem, the bottom end of the jacking pipe is arranged at the bottom of the hole and close to one side of a jacking construction opening, the jacking pipe is horizontally placed as a basic point, the jacking pipe can enter the jacking operation space of the jacking pipe through the opening, and finally, the jacking construction operation is completed by excavating rock stratum on the jacking side of the jacking pipe. Just need not excavate before the construction like this and form great foundation ditch, only need dig soon the machine creep into the stake hole can, reduced the excavation area to hard lower floor bed rock layer in addition, reduced the construction degree of difficulty, construction speed obtains accelerating simultaneously, has shortened the time limit for a project, and the great foundation ditch of corresponding construction area in stake hole has reduced the influence that causes the environment.
Preferably, the jacking pipe jacking operation space is provided with an arched top wall which is convex outwards. The jacking pipe jacking operation space can be used as a danger avoiding space for construction personnel, and when the jacking pipe is hung downwards, the construction personnel can jack the jacking pipe into the operation space, so that falling objects at high altitude are prevented from being injured by smashing. The arched top wall is convenient to construct and is not easy to collapse due to the structure.
And optimally, two adjacent protective cylinders are connected in a tongue-and-groove connection mode. Make two adjacent protecting more firm when the section of thick bamboo concatenation, avoid two to protect a dislocation to lead to outside gravel and sand to leak and come in and cause the incident.
In conclusion, the beneficial effects of the invention are as follows: the invention adopts a pile hole mode, reduces the construction range, correspondingly reduces the construction workload and difficulty, improves the construction efficiency, shortens the construction period and reduces the influence on the surrounding environment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The quick construction method of the pipe jacking working well with the upper soft and the lower hard strata in the specific embodiment comprises the following steps:
(1) leveling the field, and positioning the position of the pile hole by measuring lofting;
(2) drilling on an upper soil layer by using a rotary drilling machine, wherein when the rotary drilling machine drills for a certain distance, a drill bit of the rotary drilling machine exits from a pile hole, and a pile casing is placed into the pile hole to enable the pile casing to fall;
(3) repeating the step (2) until the pile is drilled on the lower foundation layer, splicing two adjacent pile casings in the drilled pile hole end to end, placing the casing at the lowest end on the lower foundation layer, extending a plurality of casing to the hole opening position of the drilled pile hole, and anchoring all the casing in the upper soil layer;
(4) drilling on the lower basal rock layer by using the rotary drilling machine continuously until the drilling reaches a specified elevation;
(5) transversely excavating and widening the pile hole bottom and the hole wall on the opposite side of the pipe jacking construction position to form a pipe jacking operation space for horizontally placing the jacking pipe, wherein the pipe jacking operation space is provided with an opening for enabling the jacking pipe to be constructed to enter the pipe jacking operation space, the width of the opening is greater than the diameter of the jacking pipe, and the height of the opening is equal to the height of the opening
Wherein c is the length of the jacking pipe, and b is the inner diameter of the pile casing;
(6) hardening the ground in the jacking operation space and the ground in the pile hole of the jacking pipe;
(7) a jacking device for jacking the jacking pipe is arranged in the jacking operation space of the jacking pipe;
(8) and transversely excavating the lower foundation layer at the bottom of the pile hole and at the position of the pipe jacking construction, and jacking the pipe jacking construction through a jacking device.
In this embodiment, the top pipe jacking operation space has an arched top wall protruding outward.
In this embodiment, two adjacent casing are connected by tongue-and-groove connection.
In the specific implementation process, after the construction of the jacking pipe jacking operation space in the step (5) is completed, the lower basal rock stratum is transversely excavated and widened at the position of the pile hole bottom and where the jacking pipe is constructed to form a jacking pipe jacking construction space, and the jacking pipe jacking construction space also has an outwards-convex arched top wall, so that a constructor can conveniently place corresponding construction equipment in the space, and the space is enough for construction.
Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that, while the invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (2)
1. A quick construction method for a pipe-jacking working well in a soft upper stratum and a hard lower stratum is characterized by comprising the following steps of: the method comprises the following steps:
(1) leveling the field, and positioning the position of the pile hole by measuring lofting;
(2) drilling on an upper soil layer by using a rotary drilling machine, wherein when the rotary drilling machine drills for a certain distance, a drill bit of the rotary drilling machine exits from a pile hole, and a pile casing is placed into the pile hole to enable the pile casing to fall;
(3) repeating the step (2) until the pile is drilled on the lower foundation layer, splicing two adjacent pile casings in the drilled pile hole end to end, placing the casing at the lowest end on the lower foundation layer, extending a plurality of casing to the hole opening position of the drilled pile hole, and anchoring all the casing in the upper soil layer;
(4) drilling on the lower basal rock layer by using the rotary drilling machine continuously until the drilling reaches a specified elevation;
(5) transversely excavating and widening the pile hole bottom and the hole wall on the opposite side of the pipe jacking construction position to form a pipe jacking operation space for horizontally placing the jacking pipe, wherein the pipe jacking operation space is provided with an opening for enabling the jacking pipe to be constructed to enter the pipe jacking operation space, the width of the opening is greater than the diameter of the jacking pipe, and the height of the opening is equal to the height of the opening
Wherein c is the length of the jacking pipe, and b is the inner diameter of the pile casing;
(6) hardening the ground in the jacking operation space and the ground in the pile hole of the jacking pipe;
(7) a jacking device for jacking the jacking pipe is arranged in the jacking operation space of the jacking pipe;
(8) and transversely excavating the lower foundation layer at the bottom of the pile hole and at the position of the pipe jacking construction, and jacking the pipe jacking construction through a jacking device.
2. The quick construction method of the upper-soft lower-hard-stratum pipe jacking working well according to claim 1, characterized by comprising the following steps: and two adjacent protective cylinders are connected in a tongue-and-groove connection mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810475862.8A CN108547628B (en) | 2018-05-17 | 2018-05-17 | Quick construction method for pipe-jacking working well in upper-soft and lower-hard stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810475862.8A CN108547628B (en) | 2018-05-17 | 2018-05-17 | Quick construction method for pipe-jacking working well in upper-soft and lower-hard stratum |
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| Publication Number | Publication Date |
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| CN108547628A CN108547628A (en) | 2018-09-18 |
| CN108547628B true CN108547628B (en) | 2020-09-01 |
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| CN201810475862.8A Active CN108547628B (en) | 2018-05-17 | 2018-05-17 | Quick construction method for pipe-jacking working well in upper-soft and lower-hard stratum |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374101B (en) * | 2019-07-16 | 2022-03-22 | 深圳市市政工程总公司 | Construction method for cast-in-situ bored pile casing of high-pressure-bearing fractured water stratum |
| CN113944475A (en) * | 2021-10-23 | 2022-01-18 | 中电建十一局工程有限公司 | Large-size rectangular pipe jacking construction method for stratum with upper soft layer and lower hard layer |
| CN116146220B (en) * | 2023-01-04 | 2024-03-12 | 中铁二局集团有限公司 | Construction method for large-section rectangular pipe pushing bench |
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| JPH07224590A (en) * | 1994-02-10 | 1995-08-22 | Tokyo Gas Co Ltd | Pipe jacking method of double-tube |
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| CN206738711U (en) * | 2017-05-23 | 2017-12-12 | 罗永强 | jacking construction structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203925507U (en) * | 2014-03-21 | 2014-11-05 | 中铁二十二局集团第一工程有限公司 | A kind of metro shield assembling and the system of going into the well |
| CN105649012B (en) * | 2015-12-30 | 2018-06-29 | 中铁一局集团有限公司 | Upper-soft lower-hard ground subway station building enclosure drilled pile construction method |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07224590A (en) * | 1994-02-10 | 1995-08-22 | Tokyo Gas Co Ltd | Pipe jacking method of double-tube |
| KR100984883B1 (en) * | 2009-05-22 | 2010-10-01 | 위성배 | The construction method of shield tunneling |
| CN201459756U (en) * | 2009-08-19 | 2010-05-12 | 郑州市市政工程总公司 | Hanging-type construction ceiling coil vertical shaft |
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| CN108547628A (en) | 2018-09-18 |
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