CN109653209A - City station rock excavation construction technology - Google Patents
City station rock excavation construction technology Download PDFInfo
- Publication number
- CN109653209A CN109653209A CN201910047478.2A CN201910047478A CN109653209A CN 109653209 A CN109653209 A CN 109653209A CN 201910047478 A CN201910047478 A CN 201910047478A CN 109653209 A CN109653209 A CN 109653209A
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- Prior art keywords
- excavation
- construction technology
- foundation pit
- city station
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Classifications
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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
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Sustainable Development (AREA)
- Environmental & Geological Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The present invention provides a kind of city station rock excavation construction technology, include the following steps: to manufacture free face；The first excavation of foundation pit is carried out using static blasting construction technology；Secondary excavation is carried out using mechanical system to the foundation pit after the completion of first excavate.The construction technology is in such a way that static blasting and mechanical excavation combine, both the disadvantage that tradition machinery excavates low efficiency, period length had been improved, also avoid using it is bright it is quick-fried impact surrounding buildings and resident safety etc. compared with overall situation the problem of, and the construction technology is high-efficient, it is highly-safe, save construction cost.
Description
Technical field
The present invention relates to engineering-built fields, in particular to a kind of city station rock excavation construction technology.
Background technique
Track traffic station foundation pit earthwork evacuation is to determine a great influence of the construction process of station main body
Factor.
Traditional subway station is set to completed region of the city, and most of buried depth is shallower and to excavate stratum be mainly miscellaneous fill,
Perhaps strong-weathered rock, the mode of excavation mainly use machinery to silty clay.
Inventor has found that traditional track traffic station at least has following lack in the construction process under study for action
Point:
Total in digging process, subway station excavates stratum and discloses in-micro- weathered rock formation, and simple mechanical digging mode is then
Work efficiency is lower；
In addition, subway station in completed region of the city, is set to below important traffic route more, bright quick-fried operation is difficult to carry out.
Summary of the invention
The purpose of the present invention is to provide a kind of city station rock excavation construction technologies, to improve traditional rock excavation
When coverage is big, construction efficiency is low problem.
The embodiment of the present invention is achieved in that
Based on above-mentioned purpose, the present invention provides a kind of city station rock excavation construction technology, which includes
Following steps:
Step s100, free face is manufactured；
Step s200, the first excavation of foundation pit is carried out using static blasting construction technology；
Step s300, secondary excavation is carried out using mechanical system to the foundation pit after the completion of the just excavation.
In preferred embodiments of the present invention, in the step s100, a groove is excavated in the side of foundation pit, it is described recessed
Side wall of the slot close to foundation pit side to be excavated is set as the free face.
The manufacture of free face is simple, and the width of groove, length and depth can greatly improve static state convenient for control
The safety of explosion and the effect for promoting just excavation, the spalling effect of lithosphere is good, is convenient for subsequent carry out secondary excavation, improves
Excavation of foundation pit efficiency shortens the excavation of foundation pit time, reduces the construction cost of excavation of foundation pit.
In preferred embodiments of the present invention, in the step s100, the depth of the groove is not less than the foundation pit
Depth.
Depth of groove is not less than the depth of foundation pit, in this way, the force of explosion generated during static blasting is easy from facing sky
Face discharges, and safety is higher in blasting process, accident is less prone in work progress, and static blasting quality is high, improves construction
Efficiency.
In preferred embodiments of the present invention, the excavation of foundation pit classification is carried out, and opening where the free face
Dig the priority of the priority prior to the excavation region far from the free face in region.
By the way that foundation pit to be set as excavating step by step, the explosion range of the range-controllable of every level-one namely every level-one can be by
It needs to adjust, the static blasting strategy required design of every level-one, convenient for controlling the demolition effect of every level-one, and then improves construction matter
Amount；And excavated step by step, safety is more preferable.
In preferred embodiments of the present invention, in the step s200, the static blasting construction technology includes titanium dioxide
Carbon broken rock construction technology.
Carbon dioxide gas can be changed into liquid under certain high pressure, by high-pressure pump by the carbon dioxide compression of liquid
To in cylindrical container (explosive cartridge), be packed into safety diaphragm, rupture diaphragm, heat conductive rod and sealing ring, tighten alloy cap complete it is quick-fried
Preparation before broken.Explosive cartridge and initiator and power supply line are taken to demolition site, explosive cartridge is inserted into drilling and is fixed,
Connect initiator power supply.When micro-current passes through high thermal conductivity stick, generates high temperature and puncture safety diaphragm, moment is by liquid carbon dioxide gas
Change, sharply expansion generates high-pressure shocking wave cause relief valve and automatically opens, and is worked as stroke by geometry grade by explosion article or deposit
It is swift and violent outside wave direction to promote, it is short from detonation to the whole process time is terminated, and run under low temperature, the liquid with ambient enviroment, gas
Body is immiscible, does not generate any pernicious gas, does not generate electric arc and electric spark, not by high temperature, high fever, high humidity, high and cold influences.
In explosion without concussion, no dust.Carbon dioxide belongs to the non-flammable explosive substance of inert gas, and blasting process is exactly volume expansion
Process, physics acting and chemically non-reactive.
In preferred embodiments of the present invention, in the step s200, the static blasting construction technology includes swelling agent
Broken rock construction technology.
Swelling agent explosion has the advantages that safety: without friction, noiseless, nothing during soundless cracking agent spalling object
Slungshot, without dust, without pernicious gas；Controllable: it can need to design different drilling to reach desired according to the difference of client
Cutting or crushing effect；High-efficient: especially mine square stock exploitation, breakage rate is few, and lumber recovery can be improved 2-3 times；It is economical:
Using the cost of cracking agent well below other broken and cutting tools；Using simple: need to only mix this product and quantitative water
Conjunction stirs into even slurry, is subsequently poured into the hole being drilled.
In preferred embodiments of the present invention, in the step s300, secondary open is carried out using excavator or/drilling machine
It digs.
Mechanical excavation mode is simple, and operation is convenient reliable, and the lithosphere to crack after static blasting is utilized drilling machine and shoveling
Machine directly digs out and transports, and it is time saving and energy saving to construct, and greatly shortens the construction period, reduces construction cost.
In preferred embodiments of the present invention, the excavation of foundation pit using successively excavating from top to bottom, same layer it is described
Just excavation and secondary excavation carry out next layer of first excavation and secondary excavation again after the completion.
Using successively being excavated, demolition effect is convenient for control, and foundation pit is less prone to collapsing, highly-safe.
In preferred embodiments of the present invention, the foundation pit is every to complete one layer of excavation, the corresponding position in the foundation pit
Support component is set.
By the way that support component is arranged, after the completion of each layer of excavation, the supporting construction of foundation pit is solid and reliable, is not easy to collapse；
And when carrying out next layer of Blasting Excavation, due to the supporting role of support component, foundation pit is not easy to collapse, in entire work progress
Security row is high.
In preferred embodiments of the present invention, when the support component is arranged, next layer surface to be excavated with it is described
Buffer layer is set at the corresponding position of support component, and the buffer layer is supported in the bottom of the support component.
Since lithosphere has in the change procedure from entirety to muti-piece during static blasting, the rock in the change procedure
Rock layers can discharge biggish impact force, and by the way that buffer layer is arranged, the impact force action that when next layer of excavation of foundation pit discharges is being buffered
On layer, buffer layer has the function of absorbing part of impact force, plays the role of protecting support component, and then improve the secured of foundation pit
Property.
The beneficial effect of the embodiment of the present invention is:
In conclusion the embodiment of the invention provides a kind of city station rock excavation construction technology, structure is simply closed
Reason, convenient for manufacture processing, installation with it is easy to use, meanwhile, which uses static blasting and mechanical excavation to combine
Mode had both improved tradition machinery and has excavated low efficiency, period long disadvantage, also avoided quick-fried impacting surrounding buildings using bright
And resident safely it is equal compared with overall situation the problem of, and the construction technology is high-efficient, highly-safe, saving construction cost.Specifically such as
Under:
City station rock excavation construction technology provided in this embodiment, by the lithosphere first to excavation of foundation pit region into
Row static blasting makes the lithosphere of set depth burst, and lithosphere forms multiple cracks, and whole lithosphere is separated to form stone
Block is then cleaned up stone by the way of mechanical excavation, and since lithosphere is broken into stone, the excavation of lithosphere is more
It is convenient, it is time saving and energy saving, and then the construction efficiency of foundation pit is improved, shorten construction period, saves construction cost.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the flow chart of the city station rock excavation construction technology of the embodiment of the present invention.
Specific embodiment
When tradition carries out station pit construction at lithosphere, then work efficiency is lower for simple mechanical digging mode；In addition, subway
Station is set to below important traffic route more in completed region of the city, and bright quick-fried operation is difficult to carry out.
In consideration of it, inventor devises a kind of city station rock excavation construction technology, the construction technology is using static quick-fried
The mode that broken and mechanical excavation combines both had improved the disadvantage that tradition machinery excavates low efficiency, period length, and had also avoided using
It is bright it is quick-fried impact the problem of surrounding buildings and resident's safety etc. are compared with overall situation, and the construction technology is high-efficient, highly-safe,
Save construction cost.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term "inner", "outside" is base
In orientation or positional relationship shown in the drawings or the invention product using when the orientation or positional relationship usually put, only
It is that for the convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have specifically
Orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
Embodiment
Referring to Fig. 1, present embodiments providing a kind of city station rock excavation construction technology.
The construction technology includes the following steps:
Step s100, free face is manufactured.By manufacturing free face, what is generated inside lithosphere during static blasting is rushed
It hits power to discharge from free face, improves safety.Optionally, a groove can be excavated in the side of foundation pit, groove is close to foundation pit
The side wall of side to be excavated is set as free face.The position setting of groove is smaller to external environment influence during excavation pit
Side, in this way, lithosphere release impact force caused by influence it is smaller, construct it is safer.It should be noted that groove
Shape is arranged on demand, for example, groove can be rectangular channel or arc groove, the extending direction of groove is set according to the boundary of foundation pit
It sets.
It should be appreciated that the structure of groove is used to form free face, the width and depth of groove are arranged on demand.Optionally,
The depth of the groove is not less than the depth of the foundation pit.The force of explosion generated during static blasting is easy to release from free face
It puts, safety is higher in blasting process, accident is less prone in work progress, and static blasting quality is high, improves construction efficiency.
Step s200, the first excavation of foundation pit is carried out using static blasting construction technology；When foundation pit is excavated, foundation pit is adopted
It is excavated with layer-by-layer from top to bottom, meanwhile, it uses at each layer and excavates step by step.Since free face, gradually to separate free face
It excavates in direction.In other words, the priority in the excavation region where free face is prior to the excavation region far from free face
Priority.By the way that foundation pit to be set as excavating step by step, the explosion range of the range-controllable of every level-one namely every level-one can be on-demand
Adjustment, the static blasting strategy required design of every level-one convenient for controlling the demolition effect of every level-one, and then improve construction quality；
And excavated step by step, safety is more preferable.It should be noted that in digging process step by step, the quantity that drills in setting regions,
The size and depth in aperture are arranged on demand, take into account blasting quality and cost.
After the completion of upper one layer of excavation of foundation pit, then next layer of foundation pit is carried out, excavation of foundation pit depth is controllable, the side of foundation pit
Portion is less prone to collapsing, constructs safer.Meanwhile the construction of supporting is carried out in Excavation Process.Supporting protection setting
Support component in foundation pit.Support component can be concrete column or steel pipe.After the completion of foundation pit set depth excavates,
Support component is set in foundation pit, and support component is supported between two opposite inner walls of foundation pit.Further, it is applied in support component
In working hour, buffer layer is set at the position corresponding with support component of next layer surface to be excavated, buffer layer is supported in support component
Bottom.Buffer layer can be layer of sand.Since lithosphere has in the change procedure from entirety to muti-piece during static blasting,
Lithosphere can discharge biggish impact force in the change procedure, by the way that buffer layer is arranged, what when next layer of excavation of foundation pit discharged
On the buffer layer, buffer layer has the function of absorbing part of impact force impact force action, plays the role of protecting support component, into
And improve the fastness of foundation pit.
It should be noted that static blasting includes carbon dioxide broken rock construction technology or swelling agent broken rock construction technology.
Carbon dioxide gas can be changed into liquid under certain high pressure, by high-pressure pump by the carbon dioxide compression of liquid
To in cylindrical container (explosive cartridge), be packed into safety diaphragm, rupture diaphragm, heat conductive rod and sealing ring, tighten alloy cap complete it is quick-fried
Preparation before broken.Explosive cartridge and initiator and power supply line are taken to demolition site, explosive cartridge is inserted into drilling and is fixed,
Connect initiator power supply.When micro-current passes through high thermal conductivity stick, generates high temperature and puncture safety diaphragm, moment is by liquid carbon dioxide gas
Change, sharply expansion generates high-pressure shocking wave cause relief valve and automatically opens, and is worked as stroke by geometry grade by explosion article or deposit
It is swift and violent outside wave direction to promote, it is short from detonation to the whole process time is terminated, and run under low temperature, the liquid with ambient enviroment, gas
Body is immiscible, does not generate any pernicious gas, does not generate electric arc and electric spark, not by high temperature, high fever, high humidity, high and cold influences.
In explosion without concussion, no dust.Carbon dioxide belongs to the non-flammable explosive substance of inert gas, and blasting process is exactly volume expansion
Process, physics acting and chemically non-reactive.
Swelling agent explosion has the advantages that safety: without friction, noiseless, nothing during soundless cracking agent spalling object
Slungshot, without dust, without pernicious gas；Controllable: it can need to design different drilling to reach desired according to the difference of client
Cutting or crushing effect；High-efficient: especially mine square stock exploitation, breakage rate is few, and lumber recovery can be improved 2-3 times；It is economical:
Using the cost of cracking agent well below other broken and cutting tools；Using simple: need to only mix this product and quantitative water
Conjunction stirs into even slurry, is subsequently poured into the hole being drilled, after waiting setting time, lithosphere rupture.
Step s300, secondary excavation is carried out using mechanical system to the foundation pit after the completion of first excavate.
Lithosphere after carrying out static blasting is from integrally becoming multiple crushed stones, then, using drilling machine or/and cuts the earth
Machine carries out the excavation of crushed stone, operates convenient reliable.
City station rock excavation construction technology provided in this embodiment, by the lithosphere first to excavation of foundation pit region into
Row static blasting makes the lithosphere of set depth burst, and lithosphere forms multiple cracks, and whole lithosphere is separated to form stone
Block is then cleaned up stone by the way of mechanical excavation, and since lithosphere is broken into stone, the excavation of lithosphere is more
It is convenient, it is time saving and energy saving, and then the construction efficiency of foundation pit is improved, shorten construction period, saves construction cost.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of city station rock excavation construction technology, which is characterized in that the construction technology includes the following steps:
Step s100, free face is manufactured；
Step s200, the first excavation of foundation pit is carried out using static blasting construction technology；
Step s300, secondary excavation is carried out using mechanical system to the foundation pit after the completion of the just excavation.
2. city station rock excavation construction technology according to claim 1, which is characterized in that
In the step s100, a groove, side wall of the groove close to foundation pit side to be excavated are excavated in the side of foundation pit
It is set as the free face.
3. city station rock excavation construction technology according to claim 2, which is characterized in that
In the step s100, the depth of the groove is not less than the depth of the foundation pit.
4. city station rock excavation construction technology according to claim 1, which is characterized in that
The excavation of foundation pit classification carries out, and close to the priority in the excavation region where the free face prior to facing far from described
The priority in the excavation region in empty face.
5. city station rock excavation construction technology according to claim 1, which is characterized in that
In the step s200, the static blasting construction technology includes carbon dioxide broken rock construction technology.
6. city station rock excavation construction technology according to claim 1, which is characterized in that
In the step s200, the static blasting construction technology includes swelling agent broken rock construction technology.
7. city station rock excavation construction technology according to claim 1, which is characterized in that
In the step s300, secondary excavation is carried out using excavator or/drilling machine.
8. city station rock excavation construction technology according to claim 1, which is characterized in that
The excavation of foundation pit using successively excavating from top to bottom, same layer it is described just excavate and secondary excavation after the completion of again into
The first excavation and secondary excavation of next layer of row.
9. city station rock excavation construction technology according to claim 8, which is characterized in that
The foundation pit is every to complete one layer of excavation, and support component is arranged in corresponding position in the foundation pit.
10. city station rock excavation construction technology according to claim 9, which is characterized in that
When the support component is arranged, buffering is set at the position corresponding with the support component of next layer surface to be excavated
Layer, the buffer layer are supported in the bottom of the support component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910047478.2A CN109653209A (en) | 2019-01-17 | 2019-01-17 | City station rock excavation construction technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910047478.2A CN109653209A (en) | 2019-01-17 | 2019-01-17 | City station rock excavation construction technology |
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| CN109653209A true CN109653209A (en) | 2019-04-19 |
Family
ID=66120179
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| CN201910047478.2A Pending CN109653209A (en) | 2019-01-17 | 2019-01-17 | City station rock excavation construction technology |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260732A (en) * | 2019-06-20 | 2019-09-20 | 中冶建工集团有限公司 | Close on the construction technology that massif row's danger in residential block is excavated |
| CN110644494A (en) * | 2019-09-03 | 2020-01-03 | 中国建筑一局(集团)有限公司 | Combined blasting construction method for large-diameter deep foundation pit |
| CN111854549A (en) * | 2020-07-30 | 2020-10-30 | 四川港航建设工程有限公司 | Large rock foundation pit blasting excavation system and construction method |
| CN113404052A (en) * | 2021-05-22 | 2021-09-17 | 山东高速工程建设集团有限公司 | Foundation pit stone excavation method |
| CN113587760A (en) * | 2021-08-03 | 2021-11-02 | 中南大学 | Combined rock breaking method for heat expansion rock breaking pipe and hard rock stratum foundation pit |
| CN114164836A (en) * | 2021-12-31 | 2022-03-11 | 惠州大亚湾市政基础设施有限公司 | Excavation blasting method for foundation pit earth and stone |
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| CN108871131A (en) * | 2018-07-04 | 2018-11-23 | 甘肃五环公路工程有限公司 | Thawing settlement carbon dioxide static blasting construction method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260732A (en) * | 2019-06-20 | 2019-09-20 | 中冶建工集团有限公司 | Close on the construction technology that massif row's danger in residential block is excavated |
| CN110260732B (en) * | 2019-06-20 | 2021-11-23 | 中冶建工集团有限公司 | Construction process for mountain danger-removing excavation close to residential area |
| CN110644494A (en) * | 2019-09-03 | 2020-01-03 | 中国建筑一局(集团)有限公司 | Combined blasting construction method for large-diameter deep foundation pit |
| CN111854549A (en) * | 2020-07-30 | 2020-10-30 | 四川港航建设工程有限公司 | Large rock foundation pit blasting excavation system and construction method |
| CN111854549B (en) * | 2020-07-30 | 2023-04-28 | 四川港航建设工程有限公司 | Blasting excavation system for large-scale rock foundation pit and construction method |
| CN113404052A (en) * | 2021-05-22 | 2021-09-17 | 山东高速工程建设集团有限公司 | Foundation pit stone excavation method |
| CN113404052B (en) * | 2021-05-22 | 2022-11-08 | 山东高速工程建设集团有限公司 | Foundation pit stone excavation method |
| CN113587760A (en) * | 2021-08-03 | 2021-11-02 | 中南大学 | Combined rock breaking method for heat expansion rock breaking pipe and hard rock stratum foundation pit |
| CN113587760B (en) * | 2021-08-03 | 2023-08-25 | 中南大学 | Combined rock breaking method for thermal expansion rock breaking pipe and hard rock stratum foundation pit |
| CN114164836A (en) * | 2021-12-31 | 2022-03-11 | 惠州大亚湾市政基础设施有限公司 | Excavation blasting method for foundation pit earth and stone |
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Application publication date: 20190419 |