CN107989611A - Loading method for the fracturing hole internal solid carbon dioxide of non-explosive excavation rock - Google Patents
Loading method for the fracturing hole internal solid carbon dioxide of non-explosive excavation rock Download PDFInfo
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- CN107989611A CN107989611A CN201711243908.5A CN201711243908A CN107989611A CN 107989611 A CN107989611 A CN 107989611A CN 201711243908 A CN201711243908 A CN 201711243908A CN 107989611 A CN107989611 A CN 107989611A
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- China
- Prior art keywords
- carbon dioxide
- solid carbon
- rock
- catalyst
- hole
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 127
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 63
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 63
- 239000007787 solid Substances 0.000 title claims abstract description 55
- 239000011435 rock Substances 0.000 title claims abstract description 50
- 239000002360 explosive Substances 0.000 title abstract description 6
- 238000009412 basement excavation Methods 0.000 title abstract description 3
- 238000011068 loading method Methods 0.000 title abstract 2
- 239000003054 catalyst Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000005422 blasting Methods 0.000 claims abstract description 15
- 238000004880 explosion Methods 0.000 claims abstract description 7
- 239000002023 wood Substances 0.000 claims description 9
- 238000009533 lab test Methods 0.000 claims description 3
- 230000003213 activating effect Effects 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 5
- 238000005336 cracking Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
- E21C37/14—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by compressed air; by gas blast; by gasifying liquids
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a kind of loading method of the fracturing hole internal solid carbon dioxide for non-explosive excavation rock, include the following steps；Step S1：Determine that scene single hop solid carbon dioxide is gasified totally and reaches the energy of broken rock level；Step S2：Determine catalyst amount；Step S3：Single hop solid carbon dioxide and catalyst interval are put into rock mass perforate, powder charge is carried out with decking mode.The present invention, using analogy method, standard TNT equivalents by the Energy Equivalent that solid carbon dioxide is gasified totally into explosion, are chosen, step understands by existing explosive blasting decking parameter value afterwards, operate feasible, solid carbon dioxide broken rock charge constitution is optimized, increases shoulder height, breaches the limitation of existing charging means, single broken rock amount can effectively be increased, improve efficiency of breaking rock.
Description
Technical Field
The invention relates to the technical field of blasting construction and rock cracking, in particular to a charging method of solid carbon dioxide in a cracking hole for non-blasting excavated rock.
Background
The solid carbon dioxide rock fracturing method is frequently used in excavation construction of a large-scale city core area, and a liquid carbon dioxide rock breaking device is usually adopted in the industry for rock breaking initially, but the method is not popularized due to the complex matching apparatus, inconvenient transportation of a rock breaking pipe, large hole diameter of a drill hole and the like.
At present, a new idea of replacing liquid carbon dioxide with solid carbon dioxide is proposed. The solid carbon dioxide is commonly called dry ice, is easy to store and convenient to transport, has a larger volume expansion rate after being heated and expanded than liquid carbon dioxide, and has better potential rock breaking capacity. However, the solid carbon dioxide fracturing technology belongs to a brand-new rock fracturing method, and the design and construction of the solid carbon dioxide fracturing technology have no corresponding specifications and guidance. The current common solid carbon dioxide charging mode is bottom charging of the fracturing hole, and the charging mode has great limitations, such as not too large height of a step, and therefore the rock breaking amount per time is small.
Therefore, the problem of small rock breaking amount in a single time exists in the current solid carbon dioxide charging mode.
Disclosure of Invention
The invention aims to solve the technical problem that the single rock breaking amount is small in the existing solid carbon dioxide charging mode.
In order to solve the technical problems, the technical scheme adopted by the invention is to provide a charging method of solid carbon dioxide in a fracturing hole of non-blasting excavated rock, which comprises the following steps:
step S1: determining the energy of the on-site single-section solid carbon dioxide which is completely gasified and reaches the rock breaking level,
in the formula, E car Energy kJ of solid carbon dioxide in explosion,
p is the instantaneous pressure Mpa after the explosion of the solid carbon dioxide,
k is the adiabatic coefficient of the carbon dioxide gas,
V car volume of solid carbon dioxide;
step S2: determining the catalyst amount comprises the following substeps:
step S21, let p>σ t According to formula A, let p>σ t To obtain E car A value of where σ t Tensile strength of a fractured rock mass;
step S22, determining the mass of the catalyst:
in the formula, E agt The heat (kJ/kg) generated by activating a unit volume of catalyst can be measured by laboratory tests;
and step S3: according to the calculated energy E released when the solid carbon dioxide breaks rocks car And the corresponding catalyst quantity M C Single-section solid carbon dioxide and catalyst are alternately put into the rock body open hole, and the charge is carried out by a sectional charge mode.
In another preferred embodiment, step S3 specifically includes the following steps:
step S31, firstly putting the packed single-section solid carbon dioxide into the rock body open pore, compacting by using a wood pole, then putting the catalyst with the conducting wire, and compacting by using the wood pole; according to the engineering condition, the fine sand stone is filled,
step S32, adding a second section of solid carbon dioxide, compacting by matching with a wood rod, adding a second section of catalyst with a lead, and compacting;
s33, backfilling the fine gravel to a height of 10cm away from the orifice end;
and step S34, after the conducting wire penetrates through the wooden hole plug with the hole, the hole plug is placed on the opening of the rock body, and the hole plug is compacted by a mallet, so that the hole plug is extruded with the rock wall.
In another preferred embodiment, in step S32, air isolation is performed before the second stage of solid carbon dioxide is added.
According to the method, the energy of complete gasification of the solid carbon dioxide is equivalent to the standard TNT equivalent of blasting by adopting a similar method, and then the selection is carried out by means of the existing explosive blasting sectional charging parameter value.
Drawings
FIG. 1 is a schematic diagram of a single-charge configuration of the present invention;
FIG. 2 is a schematic diagram of the construction of the present invention employing a multi-segment charge.
Detailed Description
The invention provides a charging method of solid carbon dioxide in a fracturing hole of non-blasting excavated rock, which is described in detail by combining specific embodiments and attached drawings of the specification.
The invention provides a charging method of solid carbon dioxide in a fracturing hole for non-blasting excavated rock, which comprises the following steps:
step S1: determining the energy of the on-site single-section solid carbon dioxide which is completely gasified and reaches the rock breaking level,
in the formula, E car The energy kJ of solid carbon dioxide in explosion,
p is the instantaneous pressure Mpa after explosion of the solid carbon dioxide,
k is the adiabatic coefficient of the carbon dioxide gas,
V car volume of solid carbon dioxide;
step S2: determining the catalyst amount comprises the following substeps:
step S21, let p>σ t According to formula A, E is obtained car A value of where σ t The tensile strength of the fractured rock mass.
Step S22, determining the mass of the catalyst 2:
in the formula, E agt The heat generated per unit volume of catalyst 2 after activation (kJ/kg) can be determined by laboratory tests.
And step S3: according to the calculated energy E released when the solid carbon dioxide breaks rocks car And the corresponding amount M of catalyst 2 C Of a sheetThe solid carbon dioxide 1 and the catalyst 2 are alternately put into the rock body open hole, and the charge is carried out by a multi-section charge mode.
According to the invention, parameters of the solid carbon dioxide 1 and the catalyst 2 on site are determined through a matter phase change energy conversion relation, then the energy of the solid carbon dioxide 1 which is completely gasified and reaches a certain temperature is calculated, and then a relatively complex solid carbon dioxide 1 charging method is made in a targeted manner according to an explosive blasting means. In view of the above situation, the carbon dioxide rock breaking technology in the market is still in the starting stage, and the design, construction and safety specifications are blank, the method for cracking the solid carbon dioxide 1 can effectively improve the production benefit and provide an instructive design reference.
Preferably, as shown in fig. 1 and fig. 2, the step S3 specifically includes the following steps:
step S31, firstly putting the packaged single-section solid carbon dioxide 1 into the rock body open hole, compacting by using a wood pole, then putting the catalyst 2 with the lead 31, and compacting by using the wood pole; filling fine sand 3 according to the engineering condition;
step S32, putting a second section of solid carbon dioxide 1, compacting by matching with a wood rod, putting a second section of catalyst 2 with a lead 31, and compacting;
s33, backfilling the fine sand stone 3 to a height of 10cm away from the orifice end;
step S34, after the conducting wire 31 passes through the wooden hole plug 4 with the hole, the hole plug 4 is placed on the hole of the rock body, and the hole plug 4 is impacted firmly by a mallet, so that the hole plug 4 is extruded with the rock wall.
Further preferably, in the step S32, air separation is performed to form an air separation section 5, and then the second section of solid carbon dioxide 1 is placed, so that the air separation can dispersedly charge the solid carbon dioxide 1 and provide a certain rock breaking medium, thereby achieving the effects of dispersedly charging, improving rock breaking efficiency and rock breaking effect.
According to the method, the energy of complete gasification of the solid carbon dioxide is equivalent to the standard TNT equivalent of blasting by adopting a similar method, and then the selection is carried out by means of the existing explosive blasting sectional charging parameter value.
The present invention is not limited to the above preferred embodiments, and any structural changes made under the teaching of the present invention shall fall within the protection scope of the present invention.
Claims (3)
1. The charging method of solid carbon dioxide in a fracturing hole for non-blasting excavated rock is characterized by comprising the following steps:
step S1: determining the energy of the on-site single-section solid carbon dioxide which is completely gasified and reaches the rock breaking level,
in the formula, E car The energy kJ of solid carbon dioxide in explosion,
p is the instantaneous pressure Mpa after the explosion of the solid carbon dioxide,
k is the adiabatic coefficient of the carbon dioxide gas,
V car volume of solid carbon dioxide;
step S2: determining the catalyst amount comprises the following substeps:
step S21, let p>σ t According to formula A, E is obtained car Numerical value of σ therein t Tensile strength of a fractured rock mass;
step S22, determining the mass of the catalyst:
in the formula, E agt The heat (kJ/kg) generated by activating a unit volume of catalyst can be measured by laboratory tests;
and step S3: according to the calculated solidEnergy E released during rock breaking by state carbon dioxide car And the corresponding catalyst quantity M C And placing single-section solid carbon dioxide and a catalyst into the rock body open hole at intervals, and charging in a sectional charging mode.
2. A method for charging solid carbon dioxide in a fracking hole for non-blasting excavated rock according to claim 1, wherein step S3 comprises the steps of:
step S31, firstly putting the packed single-section solid carbon dioxide into an opening of a rock mass, compacting by using a wood rod, then putting a catalyst with a lead, compacting by using the wood rod, and backfilling fine gravels with a certain height;
step S32, adding a second section of solid carbon dioxide, compacting by matching with a wood rod, adding a second section of catalyst with a lead, and compacting;
s33, backfilling the fine gravel to a height of 10cm away from the orifice end;
and step S34, after the conducting wire penetrates through the wooden hole plug with the hole, the hole plug is placed on the opening of the rock body, and the hole plug is compacted by a mallet, so that the hole plug is extruded with the rock wall.
3. A method of charging solid carbon dioxide in a fracking hole for non-blasting excavated rock according to claim 2, wherein in step S32 air isolation is performed prior to the introduction of the second section of solid carbon dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711243908.5A CN107989611A (en) | 2017-11-30 | 2017-11-30 | Loading method for the fracturing hole internal solid carbon dioxide of non-explosive excavation rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711243908.5A CN107989611A (en) | 2017-11-30 | 2017-11-30 | Loading method for the fracturing hole internal solid carbon dioxide of non-explosive excavation rock |
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| Publication Number | Publication Date |
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| CN107989611A true CN107989611A (en) | 2018-05-04 |
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| CN201711243908.5A Pending CN107989611A (en) | 2017-11-30 | 2017-11-30 | Loading method for the fracturing hole internal solid carbon dioxide of non-explosive excavation rock |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111023933A (en) * | 2019-12-11 | 2020-04-17 | 中南大学 | Mixed charging structure, charging method and blasting application thereof |
| CN111457787A (en) * | 2020-04-15 | 2020-07-28 | 西安交通大学 | Cold ejection method based on solid carbon dioxide phase change and ejector |
| CN112985186A (en) * | 2021-01-29 | 2021-06-18 | 江苏长积材料科技有限公司 | Solid carbon dioxide pneumatic rock breaking device and using method thereof |
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| WO2011038449A1 (en) * | 2009-09-29 | 2011-04-07 | Orica Explosives Technology Pty Ltd | A method of underground rock blasting |
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2017
- 2017-11-30 CN CN201711243908.5A patent/CN107989611A/en active Pending
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111023933A (en) * | 2019-12-11 | 2020-04-17 | 中南大学 | Mixed charging structure, charging method and blasting application thereof |
| CN111457787A (en) * | 2020-04-15 | 2020-07-28 | 西安交通大学 | Cold ejection method based on solid carbon dioxide phase change and ejector |
| CN112985186A (en) * | 2021-01-29 | 2021-06-18 | 江苏长积材料科技有限公司 | Solid carbon dioxide pneumatic rock breaking device and using method thereof |
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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 | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Hui Inventor after: Guo Guixi Inventor after: Chen Jianting Inventor after: Qiu Ruicheng Inventor after: Ai Jiansen Inventor after: Sun Weicheng Inventor after: Jin Decheng Inventor after: Xiao Qinghua Inventor after: Yang Linhao Inventor after: Fan Hengxiu Inventor after: Gao Haihong Inventor after: Tan Xiaochun Inventor after: Zhong Bo Inventor before: Jin Decheng Inventor before: Qiu Ruicheng Inventor before: Ai Jiansen Inventor before: Xiao Qinghua Inventor before: Yang Linhao Inventor before: Fan Hengxiu Inventor before: Gao Haihong Inventor before: Tan Xiaochun Inventor before: Zhong Bo Inventor before: Guo Guixi Inventor before: Chen Jianting |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180504 |
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| WD01 | Invention patent application deemed withdrawn after publication |