CN107740418A - A kind of construction method excavated for rock vertical wall of deep foundation pit - Google Patents
A kind of construction method excavated for rock vertical wall of deep foundation pit Download PDFInfo
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- CN107740418A CN107740418A CN201710852319.0A CN201710852319A CN107740418A CN 107740418 A CN107740418 A CN 107740418A CN 201710852319 A CN201710852319 A CN 201710852319A CN 107740418 A CN107740418 A CN 107740418A
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- excavated
- excavating
- foundation pit
- scar
- deep foundation
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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
-
- 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)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a kind of construction method excavated for rock vertical wall of deep foundation pit, this method carries out continuous vertical straight wall to excavation area scar using the outdoor Down-hole rolling rig of KT5 type integral types and excavated, the high excavating sideline error range control of precision controlling is in 50mm, facade vertical error is controlled within 5 °, cutting depth is between 1~10m, and the separation band for being mutually twisted and forming width 150mm is formed after excavating, realize the separation for excavating area and supporting region, broken clear is carried out to excavating area using broken excavator again, reduce it is broken excavate during disturbance to foundation, facade is finally excavated using the levelling circular arc of form of mesh plaster processing, form smooth waterproof construction basic unit.Therefore, present invention reduces overall excavated volume, foundation capability is ensure that, efficiency of construction is improved and shortens the construction period, construction is workable, reduces the various features such as dust and noise pollution, can obtain preferably economic and social benefit.
Description
Technical field
The present invention relates to a kind of construction method excavated for rock vertical wall of deep foundation pit, belong to ground and base in architectural engineering
Plinth technical field of construction.
Background technology
During construction of super highrise building, ground can often select the higher secondary hard stone of bearing capacity, general hard stone and special heavily fortified point
Masonry is main carrying carrier, and it has, and bearing capacity is higher, the preferable physical characteristic of globality.During such foundation excavation
Abolished more using power-equipment, such as large excavator, but powered excavation equipment is because of its hydraulic crushing device construction characteristic
It is difficult to the construction precision of excavation line is controlled, more using 1:0.35 sloping coefficient is excavated, cause excavate region commonly greater than
The excavation region of design, and need the supporting region retained to be produced by the disturbing influence of power-equipment excavating equipment in mining process
Layer is loosened, this, which loosens layer, will influence basic holding force state, need to manually reject to compact substance area, not only wasting manpower and material resources, Er Qiejin
One step increases excavation scope, and unnecessary excavation region is backfilled using concrete, adds backfill amount, cause construction cost to increase
Add.Therefore, there is no preferable processing method in such work progress at present.
The content of the invention
For above-mentioned technical problem, the present invention provides a kind of excavation precision use that is high, easy for construction, can improving efficiency of construction
In the construction method that rock vertical wall of deep foundation pit excavates, to overcome deficiency of the prior art.
Technical scheme：A kind of construction method excavated for rock vertical wall of deep foundation pit, comprises the following steps：
Step 1, it is sampled to excavating place, determines formation hardness scope, and then determines to excavate scope；
Step 2, leveling processing is carried out to region need to be excavated, control the scope of operation gradient；
Step 3, to needing excavating region and bearing area progress scope of operation division and carrying out excavation line for basic holding force rock stratum
Put cloth；
Step 4, along excavation line continuous seaming straight wall is carried out to excavating area scar using the outdoor Down-hole rolling rig of KT5 type integral types
Excavate, and control vertical precision, until excavating area's scar and supporting region scar is separated by required；
Step 5, using broken excavator to excavate area carry out it is broken clear, complete rock deep foundation pit construction.
In the above method, the formation hardness refers to according to the secondary hard stone in ground Pu Shi classification charts, general hard stone and special heavily fortified point
Stone, its cutting depth are 1~10m.
In the above method, between the scope of operation gradient is 0~10 °.
In the above method, the bearing area refers to as the region for bearing built-loading.
In the above method, the excavation line mark refers to rig sideline away from design structure sideline distance controlling within 200mm,
To reduce the distance between excavating sideline and design structure sideline, and then reduce excavated volume and reduce concrete backfill usage amount
Purpose.
In the above method, opened using the outdoor Down-hole rolling rig of KT5 type integral types excavating area's continuous seaming straight wall of scar progress
During digging, aperture is mutually twisted to form width 150mm separation bands, realizes the separation for excavating area's scar and supporting region scar.
In the above method, the centerline deviation in adjacent aperture is controlled within 50mm.
In the above method, when excavate the separation of area's scar and supporting region scar, removing equipment using static(al) will excavate
Area is separated with supporting region, and block power-equipment abolish during disturbance to the influence of scar need to be retained.
In the above method, the circular arc interface to be formed is excavated to straight wall and is handled using mesh plaster, it is anti-water base to meet
Layer requires.
Due to using above-mentioned technical proposal, the advantage of the invention is that：The present invention is excavated using straight wall and substitutes traditional put
Slope hydraulic character, excavation amount and stemming operation amount are reduced, and separation band is first formed using static(al) rig, then using dynamic
Power breaker is excavated, and eliminates disturbing influence of the digging process to carrying rock mass.Meanwhile the present invention first uses KT5 types one
The outdoor Down-hole rolling rig of body formula carries out continuous vertical straight wall to excavation area scar and excavated, the high excavating sideline error range control of precision controlling
System is controlled within 5 ° in 50mm, facade vertical error, and cutting depth forms after excavating between 1-10m and is mutually twisted shape
Into φ 150mm separation band, the separation for excavating area and supporting region is realized, then to excavating area crush clearly using broken excavator
Fortune, reduce it is broken excavate during disturbance to foundation.And the present invention passes through keyhole edge and design structure
The distance in sideline within 150mm, with reach reduce breast wall concrete backfill usage amount purpose, finally using mesh plaster at
The levelling circular arc of form of reason excavates facade, forms smooth waterproof construction basic unit.
Brief description of the drawings
Fig. 1 is the top view when present invention is implemented；
Fig. 2 is the elevation when present invention is implemented.
Description of reference numerals：The outdoor Down-hole rolling rig of 1-KT5 type integral types, 2- crush excavator, and 3- excavates area, 4- design knots
Structure sideline, 5- separation bands, 6- supporting regions, 7- foundation excavation absolute altitudes, 8- basic engineering absolute altitudes.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, with reference to the accompanying drawings and examples to this hair
It is bright to be described in further detail.
Embodiments of the invention：Referring to Fig. 1 and Fig. 2, a kind of construction party excavated for rock vertical wall of deep foundation pit of the present invention
Method, comprise the following steps：
Step 1, be sampled to excavating place, determine formation hardness scope, according to time hard stone in ground Pu Shi classification charts,
The construction method of the present invention can be used in the range of general hard stone and special hard stone, the cutting depth in each region is determined with reference to construction drawing
And excavate scope；
Step 2, leveling processing is carried out to region need to be excavated, the control scope of operation gradient is within 1~10 °；
Step 3, the scar progress scope of operation division for excavating area 3 and supporting region 6 to needing basic holding force rock stratum are simultaneously opened
Dig line and put cloth, and distance controlling of the rig sideline away from design structure sideline 4 is within 200mm；
Step 4, when excavate the separation of area's scar and supporting region scar, Qu Yucheng will be excavated by removing equipment using static(al)
Area is carried to be separated, and block power-equipment abolish during disturbance to the influence of scar need to be retained；Used along excavation line
The outdoor Down-hole rolling rig 1 of KT5 type integral types is continuously bored a diameter of φ 150mm hole to designed elevation 8 to excavating the scar of area 3,
And adjacent hole is intersected, within 50mm, vertical precision forms a diameter of width within 5 ° for control aperture centerline deviation control
150mm separation band 5 is spent, area 3 will be excavated and the scar of supporting region 6 is separated；
Step 5, broken clear carried out to excavating area 3 using broken excavator 2；
Step 6, the circular arc to be formed occlusion facade is excavated to straight wall using mesh plaster processing.
The operation principle of the present invention：The present invention is first carried out using the outdoor Down-hole rolling rig 1 of KT5 type integral types to excavation area scar
Continuous vertical straight wall is excavated, the high excavating sideline error range control of precision controlling in 50mm, the control of facade vertical error 5 ° with
Interior, cutting depth forms the separation band 5 for being mutually twisted and forming width 150mm between 1~10m after excavating, area is excavated in realization
3 with the separation of supporting region 6, then using broken excavator 2 to excavate area 3 carry out it is broken clear, reduce it is broken excavate during
Disturbance to foundation.And the present invention by the distance in keyhole edge and design structure sideline within 150mm, with
Reaching reduces the purpose of breast wall concrete backfill usage amount, and the levelling circular arc of form finally handled using mesh plaster is excavated vertical
Face, form smooth waterproof construction basic unit.Therefore, present invention reduces overall excavated volume, foundation capability is ensure that, is improved
Efficiency of construction shortens the construction period, and construction is workable, reduces the various features such as dust and noise pollution, can obtain preferably
Economy and social benefit.
Claims (9)
1. a kind of construction method excavated for rock vertical wall of deep foundation pit, it is characterised in that comprise the following steps：
Step 1, it is sampled to excavating place, determines formation hardness scope, and then determines to excavate scope；
Step 2, leveling processing is carried out to region need to be excavated, control the scope of operation gradient；
Step 3, to needing excavating region and bearing area progress scope of operation division and carry out excavation line and putting cloth for basic holding force rock stratum；
Step 4, continuous seaming straight wall is carried out to excavating area scar using the outdoor Down-hole rolling rig of KT5 type integral types along excavation line opened
Dig, and control vertical precision, until excavating area's scar and supporting region scar is separated by required；
Step 5, using broken excavator to excavate area carry out it is broken clear, complete rock deep foundation pit construction.
2. the construction method according to claim 1 excavated for rock vertical wall of deep foundation pit, it is characterised in that：The rock
Hardness refers to that its cutting depth is 1~10m according to the secondary hard stone in ground Pu Shi classification charts, general hard stone and special hard stone.
3. the construction method according to claim 1 excavated for rock vertical wall of deep foundation pit, it is characterised in that：The operation
Between the face gradient is 0~10 °.
4. the construction method according to claim 1 excavated for rock vertical wall of deep foundation pit, it is characterised in that：The carrying
Region refers to as the region for bearing built-loading.
5. the construction method according to claim 1 excavated for rock vertical wall of deep foundation pit, it is characterised in that：The excavation
Line mark refers to rig sideline away from design structure sideline distance controlling within 200mm, to reduce excavating sideline and design structure side
Distance between line, and then reduce excavated volume and reduce the purpose of concrete backfill usage amount.
6. the construction method according to claim 1 excavated for rock vertical wall of deep foundation pit, it is characterised in that：Using KT5
When the outdoor Down-hole rolling rig of type integral type carries out continuous seaming straight wall excavation to excavating area's scar, aperture is mutually twisted to form width
150mm separates band, realizes the separation for excavating area's scar and supporting region scar.
7. the construction method according to claim 6 excavated for rock vertical wall of deep foundation pit, it is characterised in that：Adjacent aperture
Centerline deviation control within 50mm.
8. the construction method according to claim 1 excavated for rock vertical wall of deep foundation pit, it is characterised in that：Excavated
During the separation of area's scar and supporting region scar, area will be excavated using static(al) dismounting equipment and separated with supporting region, and blocked dynamic
Power equipment abolish during disturbance to the influence of scar need to be retained.
9. the construction method according to claim 1 excavated for rock vertical wall of deep foundation pit, it is characterised in that：Straight wall is opened
Dig the circular arc interface formed to handle using mesh plaster, to meet waterproof matrix requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710852319.0A CN107740418A (en) | 2017-09-20 | 2017-09-20 | A kind of construction method excavated for rock vertical wall of deep foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710852319.0A CN107740418A (en) | 2017-09-20 | 2017-09-20 | A kind of construction method excavated for rock vertical wall of deep foundation pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107740418A true CN107740418A (en) | 2018-02-27 |
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ID=61235204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710852319.0A Pending CN107740418A (en) | 2017-09-20 | 2017-09-20 | A kind of construction method excavated for rock vertical wall of deep foundation pit |
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| CN (1) | CN107740418A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113279422A (en) * | 2021-06-10 | 2021-08-20 | 中庆建设有限责任公司 | Excavation method suitable for hard rock stratum enlarged foundation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806066A (en) * | 2010-03-26 | 2010-08-18 | 重庆钢铁(集团)有限责任公司 | Method for molding vertical wall of deep foundation pit |
| CN104775437A (en) * | 2015-02-15 | 2015-07-15 | 福建省闽南建筑工程有限公司 | Cutting type constructing method for excavating rock foundation pits in construction site |
| CN105952460A (en) * | 2016-05-24 | 2016-09-21 | 中车建设工程有限公司 | Non-blasting construction method of hard-rock tunnel in city |
| CN107084648A (en) * | 2017-04-24 | 2017-08-22 | 哈密新智源水利水电工程建设监理有限公司 | One kind uses pilot hole guide-localization and Smooth Blasting Construction method |
-
2017
- 2017-09-20 CN CN201710852319.0A patent/CN107740418A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806066A (en) * | 2010-03-26 | 2010-08-18 | 重庆钢铁(集团)有限责任公司 | Method for molding vertical wall of deep foundation pit |
| CN104775437A (en) * | 2015-02-15 | 2015-07-15 | 福建省闽南建筑工程有限公司 | Cutting type constructing method for excavating rock foundation pits in construction site |
| CN105952460A (en) * | 2016-05-24 | 2016-09-21 | 中车建设工程有限公司 | Non-blasting construction method of hard-rock tunnel in city |
| CN107084648A (en) * | 2017-04-24 | 2017-08-22 | 哈密新智源水利水电工程建设监理有限公司 | One kind uses pilot hole guide-localization and Smooth Blasting Construction method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113279422A (en) * | 2021-06-10 | 2021-08-20 | 中庆建设有限责任公司 | Excavation method suitable for hard rock stratum enlarged foundation |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180227 |
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| RJ01 | Rejection of invention patent application after publication |