CN108871131A - Thawing settlement carbon dioxide static blasting construction method - Google Patents
Thawing settlement carbon dioxide static blasting construction method Download PDFInfo
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- CN108871131A CN108871131A CN201810724873.5A CN201810724873A CN108871131A CN 108871131 A CN108871131 A CN 108871131A CN 201810724873 A CN201810724873 A CN 201810724873A CN 108871131 A CN108871131 A CN 108871131A
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- Prior art keywords
- carbon dioxide
- fracturing
- blasthole
- fracturing pipe
- static blasting
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- 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.)
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Classifications
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- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
Abstract
The invention discloses a kind of thawing settlement carbon dioxide static blasting construction method, including (1) drilling, borehole cleaning, fracturing length of tube：L=1200~2300mm, fracturing pipe diameter d=83~108mm, blast hole depth l=1.5L~2.5L, blasthole diameter：D=90mm~125mm, minimum burden：W=1L, the step angle of gradient：α=60 °~90 °, blasthole spacing are a=1L, bore angle：β=90 °, pattern are arranged using "-" type or isosceles triangle；(2) inflation of fracturing pipe, tubulature, carry out blast hole stemming after installation, filling requires concordant with drilling original ground；(3) Security alert, explosion, connect conductive net, and network resistance value is close to calculated value；(4) it checks, propose pipe recycling.Present invention determine that some key parameters in the particular surroundings operation carbon dioxide static blasting construction technology for thering is control to require concussion of blasting and noise, significantly reduce concussion of blasting and noise, " static blasting " is realized, provides guidance in actual utilization for carbon dioxide Static Blasting Technique.
Description
Technical field
The invention belongs to blasting construction method technical fields more particularly to a kind of thawing settlement carbon dioxide static blasting to apply
Work method.
Background technique
Carbon dioxide explosion starts from nineteen fifties, and the eighties start to develop in the U.S., primarily to keeping away
Exempt from because explosive blasting generate flame caused by explosion accident due to exclusively for highly gassy mine coal working face research and development.2015
Year, with the development of science and technology, domestic carbon dioxide explosive manufacturer gradually emerges in large numbers, quiet quick-fried engineering technology also from coal mine field across
More arrive non-coal mine.But current carbon dioxide static blasting construction method maturity is insufficient, is still in constantly growth and develops rank
Section, there is a problem of the following：1, low efficiency：Construction method is excessively cumbersome, and construction is time-consuming, all too many levels of constructing are for example filling,
It easily goes wrong in wiring, sealing of hole etc..2, free face requirement：Need to be just effective using free face, be not suitable for deep basal pit or high up in the air
Bad work surface.3, low output：It cannot achieve multiple rows of explosion, the explosive cartridge quantity of single explosion is more than no more than two rows
One row is easy for blocking or blowing up explosive cartridge.4, at high cost：Its activator used is specialized configuration, and is used to be disposable
Product cause blasting cost height.5, it requires high：Explosive cartridge filling process and site operation are more complex, to blasthole quality requirement compared with
It is high.
With being constantly progressive for science and technology, the construction of China's highway also enters Fast Construction period, roadbed stone
Square carbon dioxide Technology of Blasting should also develop towards mechanization, automation, intelligence and specialized direction, ensure that
Under the premise of construction quality and safety, engineering cost is reduced, improves construction efficiency.But carbon dioxide static blasting at present
Difficult point of the technology in practice can not still be captured with critical construction technology, static in particular surroundings operation carbon dioxide
The design of some key parameters in blasting construction process, such as blasthole spacing, long for the filling of fracturing pipe under different rock-layers characteristic
Degree etc., directly affects entire construction results.
Summary of the invention
The purpose of the present invention is to provide a kind of thawing settlement carbon dioxide static blasting construction methods, it is determined that special
Some key parameters in environment work carbon dioxide static blasting construction technology, this method explosion strength is big and controllable, is protecting
Under the premise of having demonstrate,proved construction quality and safety, the requirement to work surface is reduced, overcomes the limitation that cannot achieve multiple rows of explosion,
Construction period shortens, and construction efficiency improves, and reduces engineering cost, reduces the disturbance under particular surroundings, reduces dust pollution,
Protect the health of construction personnel.
The invention is realized in this way a kind of thawing settlement carbon dioxide static blasting construction method, the tool of the method
Steps are as follows for body：
(1) drilling, borehole cleaning
Selection clears out work using excavator hydraulic breaking hammer before not formed free face with blasthole correspondingly-sized impactor
Make face, working face is rebuild to smooth, laying blasthole, blast hole depth：L=1.5L~2.5L, blasthole diameter：D=90mm~
125mm, minimum burden：W=1L, the step angle of gradient：α=60 °~90 °, blasthole spacing are a=1L, bore angle：β=
90 °, angular error≤± 2 °, depth error≤± 20cm, wherein my fracturing length of tube of L；Minimum burden increases with stratum density
Add and increase, and is not more than 1L；Reduce with rock density and reduces；Pattern is using "-" type or isosceles triangle arrangement, root
According to construction site work area can single explosion also multiple rows of explosion, single maximum detonate quantity be 60；
(2) inflation of fracturing pipe, tubulature
Select fracturing length of tube：L=1200~2300mm, fracturing pipe diameter d=83~108mm, fracturing pipe are packed into activation
Device, level pressure piece, sealing ring, then screw end seals head, are successively orderly discharged into fracturing pipe and fill on frame, according to fracturing
The loading of pipe requires filling liquid carbon dioxide, and the fracturing pipe being filled with is sequentially connected detonation route after being transported to blast hole,
Looked into detonation route it is intact after, artificial tubulature；After fracturing pipe installs, choke material is selected to carry out blast hole stemming, by blast hole stemming
To blasthole mouth, the choke material is the powdered gravelly soil and clay that partial size is less than 5mm；
(3) Security alert, explosion
Safe distance control of detonating is 50m, and when detonation withdraws personnel, equipment etc. other than safe distance to, by the route that detonates
It is connected to initiator, makes network resistance value close to calculated value；Detonation；
(4) it checks, propose pipe recycling
Initiator is resetted, quick-fried rear 5min checks demolition site, recycles fracturing pipe.
Preferably, the blast hole stemming clogs powdered gravelly soil first, and the stemming length of the powdered gravelly soil accounts for
Then 3/4ths of choke material stemming length clog clay to blasthole aperture, and consolidate sealing.
Preferably, the glutinous soil's water content is 15%.
Compared with the prior art the shortcomings that and deficiency, the invention has the advantages that：The present invention passes through the foundation stone that satisfies the need
Demonstration repeatedly, summary and the analysis of square carbon dioxide static blasting construction method, it is determined that have control to concussion of blasting and noise
It is required that particular surroundings operation carbon dioxide static blasting construction technology in some key parameters, such as blasthole spacing, blasthole
Arrangement etc. guarantees construction quality and safety, hence it is evident that reduces concussion of blasting and noise, realizes " static blasting ", improves
Working environment after explosion, reduces the generation of blasting dust, reduces noise, alleviate air-shock wave and disturb to surrounding
It is dynamic, and the problem of cannot achieve multiple rows of explosion is overcome, the construction period shortens, engineering cost reduces, and is that carbon dioxide is static
Blasting technique provides guidance in actual utilization.
Detailed description of the invention
Fig. 1 is a kind of thawing settlement carbon dioxide static blasting construction flow chart provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
A kind of thawing settlement carbon dioxide static blasting construction method, construction technology process are as shown in Figure 1.
1, thawing settlement blasting parameters determination
It is deep-controlled on the left side 1.5L~2.5L according to gas explosion if L is fracturing length of tube using carbon dioxide static blasting
The right side, based on buried loosening swelling cracking, selection and blasthole correspondingly-sized impactor, before not formed free face, using excavation
Machine hydraulic breaking hammer clears out working face.
Proposed adoption parameter is as follows：
(1) fracturing length of tube：L=1200~2300mm, fracturing pipe diameter d=83~108mm
(2) blasthole diameter：D=90mm~125mm, minimum burden：W=1L, the step angle of gradient：α=60 °~90 °, big gun
Pitch of holes is a=1L, bore angle：β=90 °, angular error≤± 2 °, depth error≤± 20cm；
(3) minimum burden：W=1L；
When every separate explosion cloth hole, the blasthole minimum burden near free face is not preferably greater than 1L, to ensure blasting energy
It is as much as possible to be discharged from free face direction.
More down due to massif rock stratum, the hardened property in rock stratum is stronger, and rock strength is higher, therefore minimum burden should be with rock stratum depth
Degree increases and suitably reduces.
(4) the step angle of gradient：α=60 °~90 °；
Preferably as close possible to 90 °, minimum must not be lower than 60 °, when being lower than 60 ° to the step angle of gradient, it is necessary to using hydraulic broken
Broken hammer splits and is hooked into capable finishing, to avoid occur blasthole bottom burden it is excessive and make rock can not explosion as a result, if rock
Intensity is too hard, when using liquid quartering hammer and splitting hook and can not increase the step angle of gradient, then can use inclined drill in drilling
Inclined hole pattern, the gradient in hole should be consistent with the step gradient as far as possible.
(5) blasthole interval：A=1L；
As formation depth increases, rock strength enhancing, blasthole spacing can suitably reduce.
(6) bore angle：β=90 ° (vertical drilling)；
Vertical pattern is preferentially used, the fracturing pipe construction that drills and load is conducive to.If but rock strength is too hard, uses
Liquid quartering hammer and when splitting hook and can not increase the step angle of gradient, can in drilling using the inclined hole pattern of inclined drill,
The gradient in hole should be consistent with the step gradient as far as possible.
(7) pattern："-" type or isosceles triangle；
(8) blasthole number of rows：Single row or multiple rows；
According to construction site work area can single explosion also multiple rows of explosion, single maximum detonate quantity be 60.
2, borehole accuracy controls
Vertical hole is used when conditions permit as far as possible, advantage is that drilling operation is easier to, and is convenient for tubulature；The disadvantage is that fracturing pipe is let out
Energy device is unevenly distributed along step height, influences the reasonable function of energy.The advantages of inclined hole cracks is that Energy distribution is relatively reasonable,
The minimum burden for extending hole length is equal or be bordering on equal, is conducive to eliminate foundation and obtains the release of uniform energy；Disadvantage
It is bore process complexity, boring direction is not easy to control, and packing speed is low, and porosity of giving up is high.
(1) blasthole is arranged
It is smooth to working face trimming first before drill-blast tunnelling, blasthole spacing and position are laid by professional technician, and really
Determine critical control point, passes through free face and blasthole distance, the avalanche distance of control of flyrock；
(2) borehole accuracy controls
In thawing settlement explosion, blasthole boring requirement " quasi-, straight, neat " should focus on to control its drilling in actual job
Precision.
3, the inflation of fracturing pipe, tubulature
Fracturing pipe is orderly discharged into and is filled on frame, activator, level pressure piece, sealing ring are sequentially loaded into, then with 10 kilograms
Torque spanner screws end seals head, and the aeration quantity that different size fracturing pipe corresponds to liquid carbon dioxide is as shown in table 1 below：
1 different size fracturing pipe of table corresponds to the aeration quantity of liquid carbon dioxide
| Fracturing pipe diameter | Length | Aeration quantity | Weight | Bore diameter |
| 83mm | 1.2m | 1.4kg | 37kg | 100mm |
| 95mm | 1.2m | 2.0-2.3kg | 43kg | 115mm |
| 98mm | 1.7m | 3.7kg | 47kg | 115mm |
| 108mm | 2.3m | 6.8kg | 108kg | 125mm |
The fracturing pipe being filled with is sequentially connected detonation route after being transported to blast hole, looked into detonation route it is intact after, manually
Tubulature, fracturing pipe carry out blast hole stemming after installing, and using choke material by blast hole stemming to blasthole mouth, choke material uses grain
The clay of powdered gravelly soil of the diameter less than 5mm and moisture content 15%；
4, it is clogged in hole
(1) filling requires：
The clay of powdered gravelly soil and moisture content 15% of the choke material using partial size less than 5mm, and heap of being classified
It is placed on around drilling, after installing fracturing pipe, is first slowly put into powdered gravelly soil in blasthole, powdered gravelly soil filling length
Degree accounts for 3/4ths of choke material stemming length, then the clay of filling moisture content 15% to blasthole mouth, and is consolidated with waddy
Sealing.
(2) operation points for attention are clogged：
1) moist rubble grain soil must not be contained in choke material, partial size must satisfy requirement.
2) in drilling when water, mud or hanging easy to form, makes not clogging around fracturing pipe closely knit during filling.
Demolition effect is bad, or even fracturing pipe is caused to fly out from the air.
3) to prevent conducting wire from breaking during clogging.
Consolidation process connects the alloy cap of every group of fracturing pipe with wirerope, controls individual fracturing pipes and disperses or slide
It falls.
5, blasting circuit connects
The connection of conductive net is carried out afterwards, and the connection of conductive net is a critical process, must if a blasthole number is more
Must rationalization partition connection, to reduce the resistance value of entire conductive net, it is noted that the resistance balance of each branch, guarantees when subregion
Each cracking device obtains identical current value.In the connection procedure of network, electrician's multimeter detection network resistance, electricity should be utilized
Resistance value in calculated value or so be it is suitable, after network connects, it is necessary to compare with calculated value network institute measuring resistance value
Compared with calculation formula R=copper section corresponds to every square meter resistance value × copper wire total length and should ascertain the reason if difference is larger, row
It except failure, reconnects, the connector application high quality insulating tape of network connection tightly wraps, and guarantees that connection is reliable.
Since disposable detonation only has 1 artillery salvo hole under normal conditions, thus the line connection that detonates is mainly using series connection
Connection, should check whether resistance meets expection before detonation, check that errorless rear can be carried out detonation operation.
6, Security alert
Determine Security alert range, warning sign or warning rope be set, by warning, personnel are responsible for supervision, prevent irrelevant personnel into
Enter, reinforce the safety management to fracturing equipment, prevents stolen loss；
After fracturing pipe is conveyed into building site, special messenger need to be arranged to be responsible for keeping an eye on, prevent irrelevant personnel from contacting fracturing article.
Centered on bursting work area, it is contemplated that this engineering practice is quick-fried in operation district center 50m range inner region
Broken fence coverage, irrelevant personnel is prohibited from entering when operation.
Fence coverage is externally radiated to each traffic intersection again and is all provided with warning point, is blast warning region within warning point.
Workspace checks comprehensively after quick-fried, the scope of examination：Whether blasthole all detonates in operation area, the shape and safety of quick-fried heap
Situation；
It is checked after quick-fried, confirmation safety simultaneously permits that warning can be released through explosion responsible person.
7, it detonates
It is detonated using high energy initiator.Before detonation, first check for whether initiator is intact normally, and initiator should fill in time
Electricity guarantees to provide enough electric energy, and can quickly be charged to the voltage value of explosion demand；Before connecting main line must to network resistance into
Row detection measures network resistance value after the completion of warning again, after determining normally, could connect main line with initiator, then
Wait detonation order.It after detonation, cuts off the power in time, main line is separated with initiator.
First demolition site is checked by engineers and technicians after 5min after quick-fried, only finishes confirmation safety in inspection
Afterwards, it could issue and release restricted speed signal and other staff is allowed to enter construction site.
The scope of examination after quick-fried：
1) whether stable it is crushed heap, whether there is or not danger slopes, danger stone；
2) whether there is or not dangerous slopes, unstable broken heap, Rolling Stone and over range to collapse.
8, pipe is mentioned
1) during mentioning pipe, dip direction should be consistent with lift lever direction；
2) forbid violence to operate, if cannot smoothly propose fracturing pipe, second-time breakage need to be carried out to rock；
3) fracturing pipe is withdrawn, progress is secondary to fill use.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (3)
1. a kind of thawing settlement carbon dioxide static blasting construction method, which is characterized in that the specific steps of the method include：
(1) drilling, borehole cleaning
Before not formed free face, working face is cleared out, working face is rebuild to smooth, laying blasthole, blast hole depth：L=1.5L~
2.5L, blasthole diameter：D=90mm~125mm, minimum burden：W=1L, the step angle of gradient：α=60 °~90 °, blasthole spacing
For a=1L, bore angle：β=90 °, angular error≤± 2 °, depth error≤± 20cm, wherein L is fracturing length of tube；Most
Island operation increases with stratum density and is increased, and is not more than 1L；Reduce with rock density and reduces；Pattern uses one
Font or isosceles triangle arrangement, according to construction site work area can single explosion also multiple rows of explosion, single maximum detonate quantity
It is 60；
(2) inflation of fracturing pipe, tubulature
Select fracturing length of tube：L=1200~2300mm, fracturing pipe diameter d=83~108mm, fracturing pipe are packed into activator, determine
Then tabletting, sealing ring screw end seals head, be successively orderly discharged into fracturing pipe and fill on frame, according to fracturing pipe
Loading requires filling liquid carbon dioxide, and the fracturing pipe being filled with is sequentially connected detonation route after being transported to blast hole, through looking into
After the route that detonates is intact, artificial tubulature；After fracturing pipe installs, choke material is selected to carry out blast hole stemming, by blast hole stemming to big gun
Aperture, the choke material are the powdered gravelly soil and clay that partial size is less than 5mm；
(3) Security alert, explosion
Safe distance control of detonating is 50m, and when detonation withdraws personnel, equipment etc. other than safe distance to, by the connection that detonates
To initiator, make network resistance value close to calculated value；Detonation；
(4) it checks, propose pipe recycling
Initiator is resetted, quick-fried rear 5min checks demolition site, recycles fracturing pipe.
2. thawing settlement carbon dioxide static blasting construction method as described in claim 1, which is characterized in that the blasthole is filled out
Plug clogs powdered gravelly soil first, the stemming length of the powdered gravelly soil account for choke material stemming length four/
Three, clay is then clogged to blasthole aperture, and consolidates sealing.
3. thawing settlement carbon dioxide static blasting construction method as claimed in claim 2, which is characterized in that the clay
Moisture content is 15%.
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| CN201810724873.5A CN108871131B (en) | 2018-07-04 | 2018-07-04 | Carbon dioxide static blasting construction method for roadbed rock |
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|---|---|---|---|
| CN201810724873.5A CN108871131B (en) | 2018-07-04 | 2018-07-04 | Carbon dioxide static blasting construction method for roadbed rock |
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| CN108871131B CN108871131B (en) | 2020-07-03 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653209A (en) * | 2019-01-17 | 2019-04-19 | 中交（广州）建设有限公司 | City station rock excavation construction technology |
| CN110553559A (en) * | 2019-09-12 | 2019-12-10 | 中南大学 | Method for controlling explosive property by utilizing liquid carbon dioxide phase change |
| CN111692935A (en) * | 2020-06-18 | 2020-09-22 | 南京创华安全技术有限公司 | Blasting construction method of blasting equipment |
| CN111911164A (en) * | 2020-07-09 | 2020-11-10 | 中国科学院武汉岩土力学研究所 | Environment-friendly hard rock mass groove excavation method |
| CN113566663A (en) * | 2020-04-28 | 2021-10-29 | 广东中人岩土工程有限公司 | Carbon dioxide underwater blasting construction method |
| CN115077316A (en) * | 2022-07-19 | 2022-09-20 | 河南省公路工程局集团有限公司 | Carbon dioxide static blasting construction method for roadbed earthwork |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB262941A (en) * | 1925-12-15 | 1926-12-23 | Dent Farrell | Improvements in blasting methods and means |
| CN106288988A (en) * | 2016-08-31 | 2017-01-04 | 北京龙德时代技术服务有限公司 | Intelligence carbon dioxide blasting technology method |
| CN107121037A (en) * | 2017-06-26 | 2017-09-01 | 中国十九冶集团有限公司 | A kind of cubic meter of stone static crushing structure and its construction |
| CN107941097A (en) * | 2017-11-08 | 2018-04-20 | 中铁十局集团第八工程有限公司 | A kind of process of liquid carbon dioxide fracturing rock |
-
2018
- 2018-07-04 CN CN201810724873.5A patent/CN108871131B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB262941A (en) * | 1925-12-15 | 1926-12-23 | Dent Farrell | Improvements in blasting methods and means |
| CN106288988A (en) * | 2016-08-31 | 2017-01-04 | 北京龙德时代技术服务有限公司 | Intelligence carbon dioxide blasting technology method |
| CN107121037A (en) * | 2017-06-26 | 2017-09-01 | 中国十九冶集团有限公司 | A kind of cubic meter of stone static crushing structure and its construction |
| CN107941097A (en) * | 2017-11-08 | 2018-04-20 | 中铁十局集团第八工程有限公司 | A kind of process of liquid carbon dioxide fracturing rock |
Non-Patent Citations (1)
| Title |
|---|
| 王晓健: "液态二氧化碳预裂爆破挖方路基施工技术", 《交通建设》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653209A (en) * | 2019-01-17 | 2019-04-19 | 中交（广州）建设有限公司 | City station rock excavation construction technology |
| CN110553559A (en) * | 2019-09-12 | 2019-12-10 | 中南大学 | Method for controlling explosive property by utilizing liquid carbon dioxide phase change |
| CN110553559B (en) * | 2019-09-12 | 2021-04-02 | 中南大学 | Method for controlling explosive property by utilizing liquid carbon dioxide phase change |
| CN113566663A (en) * | 2020-04-28 | 2021-10-29 | 广东中人岩土工程有限公司 | Carbon dioxide underwater blasting construction method |
| CN111692935A (en) * | 2020-06-18 | 2020-09-22 | 南京创华安全技术有限公司 | Blasting construction method of blasting equipment |
| CN111911164A (en) * | 2020-07-09 | 2020-11-10 | 中国科学院武汉岩土力学研究所 | Environment-friendly hard rock mass groove excavation method |
| CN111911164B (en) * | 2020-07-09 | 2021-07-13 | 中国科学院武汉岩土力学研究所 | Environment-friendly hard rock mass groove excavation method |
| CN115077316A (en) * | 2022-07-19 | 2022-09-20 | 河南省公路工程局集团有限公司 | Carbon dioxide static blasting construction method for roadbed earthwork |
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