CN114608396A - Method for breaking rock by utilizing air energy and liquid oxygen blasting device - Google Patents
Method for breaking rock by utilizing air energy and liquid oxygen blasting device Download PDFInfo
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- CN114608396A CN114608396A CN202210279907.0A CN202210279907A CN114608396A CN 114608396 A CN114608396 A CN 114608396A CN 202210279907 A CN202210279907 A CN 202210279907A CN 114608396 A CN114608396 A CN 114608396A
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- liquid oxygen
- blasting device
- oxygen
- gun barrel
- rock
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- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 238000005422 blasting Methods 0.000 title claims abstract description 106
- 239000011435 rock Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000000977 initiatory effect Effects 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 44
- 239000001301 oxygen Substances 0.000 claims description 44
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 43
- 238000002791 soaking Methods 0.000 claims description 20
- 239000002985 plastic film Substances 0.000 claims description 16
- 229920006255 plastic film Polymers 0.000 claims description 16
- 238000010304 firing Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 5
- 238000004880 explosion Methods 0.000 abstract description 3
- 239000002360 explosive Substances 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 241000209094 Oryza Species 0.000 description 6
- 235000007164 Oryza sativa Nutrition 0.000 description 6
- 229920000915 polyvinyl chloride Polymers 0.000 description 6
- 239000004800 polyvinyl chloride Substances 0.000 description 6
- 235000009566 rice Nutrition 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000002640 oxygen therapy Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- CQBLUJRVOKGWCF-UHFFFAOYSA-N [O].[AlH3] Chemical compound [O].[AlH3] CQBLUJRVOKGWCF-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
-
- 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
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/04—Blasting cartridges, i.e. case and explosive for producing gas under pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention relates to the technical field of rock blasting, in particular to a method for breaking rock by utilizing air energy and a liquid oxygen blasting device. The method comprises drilling a hole in a target rock to form at least one borehole; assembling a liquid oxygen blasting device, wherein the liquid oxygen blasting device is assembled according to the caliber of the drilled hole; putting the assembled liquid oxygen blasting device into the drill hole; filling the liquid oxygen blasting device in the drill hole, and filling liquid oxygen into the liquid oxygen blasting device; and checking the electric initiation device, and performing ignition initiation under the condition that the electric initiation device meets the ignition condition. The method utilizes the expansion gas generated after igniting the liquid oxygen to crush the rock, thereby not only reducing the pollution to the environment, but also avoiding the damage caused by violent explosion and effectively reducing the damage to the surrounding environment.
Description
Technical Field
The invention relates to the technical field of rock blasting, in particular to a method for breaking rock by utilizing air energy and a liquid oxygen blasting device.
Background
The method for breaking the rock mainly comprises explosive blasting cracking, carbon dioxide blasting cracking, mechanical breaking and the like. The explosive blasting method has the advantages that the cost of explosive blasting is the lowest, the explosive blasting is most commonly used, but rock crushing is carried out near sensitive areas (such as areas of roads, railways, ancient buildings, residential areas and the like), the explosive blasting power is usually high, the rock can vibrate greatly, and then some secondary disasters are easily caused. Compared with the explosive blasting mode, the method of mechanical crushing or carbon dioxide blasting cracking is adopted, and although large vibration and damage cannot be generated, the method is high in cost and long in construction period, and is not beneficial to rock development.
Disclosure of Invention
The invention provides a method for breaking rock by utilizing air energy and a liquid oxygen blasting device, which are used for solving the problem that some secondary disasters are easily caused in the rock breaking process in the prior art.
To solve the above problems, in a first aspect, the present invention provides a method of crushing rock using air energy, the method comprising:
opening a hole, and forming at least one drill hole in the target rock;
assembling a liquid oxygen blasting device, wherein the liquid oxygen blasting device is assembled according to the caliber of the drilled hole;
putting the assembled liquid oxygen blasting device into the drill hole;
filling the liquid oxygen blasting device in the drill hole, and filling liquid oxygen into the liquid oxygen blasting device;
and checking the electric initiation device, and performing ignition initiation under the condition that the electric initiation device meets the ignition condition.
In a possible implementation manner according to the first aspect, it is preferable that the assembled liquid oxygen blasting device includes the following steps:
preparing a gun barrel according to the caliber of the drilled hole, wherein the gun barrel is used for storing liquid oxygen;
loading wet soaking paper into the gun barrel, wherein the wet soaking paper is used for soaking liquid oxygen;
and inserting an oxygen conveying pipe and placing a resistance wire ignition head into the middle of the gun barrel, wherein oxygen leakage holes are formed in the part of the oxygen conveying pipe in the gun barrel, and the resistance wire ignition head is electrically connected with the external electric initiation device.
In a possible implementation manner according to the first aspect, in the step of assembling the liquid oxygen blasting device, preferably, after preparing a barrel according to the caliber size of the drilled hole, the barrel being used for storing liquid oxygen, the step further includes sealing the inside of the barrel with a plastic film.
In a possible implementation manner according to the first aspect, after the liquid oxygen blasting device is assembled, the method further preferably includes inserting an exhaust pipe into the liquid oxygen blasting device, wherein the exhaust pipe is used for guiding out gas oxygen evaporated in the liquid oxygen blasting device.
In a possible implementation form according to the first aspect, preferably, before the checking of the electric primer means and the ignition of the electric primer means in a state in which the electric primer means is satisfactory for ignition, the method further comprises setting a bank delay time on the electric primer means, the bank delay time being set to 0.25 seconds or 0.5 seconds.
In a second aspect, the present invention further provides a liquid oxygen blasting device, which is applied to the above method for breaking rock by using air energy, and the liquid oxygen blasting device includes:
the gun barrel is filled with wet soaking paper, and the wet soaking paper is used for soaking liquid oxygen;
the seal head is used for sealing the gun barrel;
one part of the oxygen conveying pipe is arranged in the gun barrel, the other part of the oxygen conveying pipe penetrates out of the end enclosure, oxygen leakage holes are formed in the part of the oxygen conveying pipe in the gun barrel, and the oxygen conveying pipe is used for filling liquid oxygen into the gun barrel;
the gun barrel comprises a resistance wire ignition head, wherein the resistance wire ignition head is arranged in the gun barrel and is electrically connected with an external electric initiation device.
According to the second aspect, in a preferred implementation manner, the liquid oxygen blasting device further comprises an exhaust pipe, one end of the exhaust pipe is inserted into the blast pipe, and the other end of the exhaust pipe penetrates through the end enclosure.
According to the second aspect, in a preferred implementation manner, the liquid oxygen blasting device further comprises a plastic film, the plastic film is packaged in the cannon barrel, and the plastic film is used for wrapping the wet soaking paper, the oxygen conveying pipe and the resistance wire ignition head.
In a preferred implementation form according to the second aspect, the oxygen pipe is made of aluminum metal.
According to the second aspect, in a preferred implementation, the resistance wire firing head is made of tungsten wire.
The invention has the beneficial effects that: the invention provides a method for breaking rock by utilizing air energy, which comprises the steps of firstly, forming at least one drill hole on a target rock, then assembling a liquid oxygen blasting device according to the caliber size of the drill hole, further placing the liquid oxygen blasting device into the drill hole, further filling the liquid oxygen blasting device in the drill hole, and detonating after filling liquid oxygen into the liquid oxygen blasting device. The method utilizes the principle that a large amount of expansion gas is generated after liquid oxygen is ignited, so that the rock is broken, the blasting power can be reduced while the rock is broken, and the damage to the surrounding environment is greatly reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 shows a schematic flow chart of the steps of a method of breaking rock using air energy;
FIG. 2 shows a schematic flow diagram of the steps for assembling a liquid oxygen blasting device;
FIG. 3 shows a schematic flow diagram of a preferred procedure for assembling a liquid oxygen blasting device;
FIG. 4 shows a schematic flow chart of the steps of a preferred method of breaking rock using air energy;
fig. 5 shows a schematic internal structure diagram of the liquid oxygen blasting device.
Description of the main element symbols:
100-drilling; 200-gun barrel; 300-sealing head; 400-oxygen therapy pipe; 410-oxygen leakage holes; 500-resistance wire ignition head; 600-soaking paper; 700-an exhaust pipe; 800-plastic film.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1, the present invention provides a method for breaking rock by using air energy, which can effectively reduce the damage to the surrounding environment.
Specifically, the method comprises the following five steps:
and S100, opening a hole, and forming at least one drill hole in the target rock.
It can be understood that when blasting the target rock, a drill hole for charging the blasting device is required to be opened in the target rock, wherein the number of the drill holes can be one, and the number of the drill holes can also be multiple.
Specifically, when a plurality of drill holes are drilled in the target rock, the distance between the drill holes needs to be set according to the caliber of the drill holes so as to increase the effect of breaking the rock.
Preferably, the distance between the boreholes is set to be 20-30 times the caliber of the borehole. For example, the diameter of the drilled hole is 10mm, and the distance between the drilled holes is set to 2 to 3m, and the diameter of the drilled hole needs to be appropriately enlarged or reduced according to the depth of the drilled hole, and the diameter of the drilled hole can be enlarged when the drilled hole is relatively deep, and the diameter of the drilled hole can be reduced when the drilled hole is relatively shallow.
And S200, assembling the liquid oxygen blasting device according to the caliber of the drilled hole.
And after the drill hole is drilled, assembling the liquid oxygen blasting device according to the caliber of the drill hole.
Preferably, the diameter of the liquid oxygen blasting device is 15mm-20mm smaller than the inner diameter of the drill hole, so that the liquid oxygen blasting device can be loaded into the drill hole without obstruction, and efficient crushing effect is generated.
And step S300, putting the assembled liquid oxygen blasting device into a drill hole.
It can be understood that, for the assembly of the liquid oxygen blasting device, the liquid oxygen blasting device can be assembled in the drill hole, or the liquid oxygen blasting device can be put into the drill hole after the assembly is finished.
In this scheme, preferred, the adoption is earlier put into the mode among the drilling after liquid oxygen blasting device equipment is accomplished, the equipment of the liquid oxygen blasting device of not only being convenient for, can also effectively improve the matching state of liquid oxygen blasting device and drilling, and then improve the effect to the rock blasting.
And S400, filling the liquid oxygen blasting device in the drill hole, and filling liquid oxygen into the liquid oxygen blasting device.
After the liquid oxygen blasting device is placed in the borehole, a gap between the liquid oxygen blasting device and the borehole is plugged with stemming, stone chips or small particle chips.
Firstly, the liquid oxygen blasting device is subjected to sealing and filling treatment by using stemming so as to improve the air tightness of the liquid oxygen blasting device; secondly, the liquid oxygen blasting device is packaged in the drill hole by using the stemming, the stone chips and the small particle chips, so that a gap between the drill hole and the liquid oxygen blasting device is filled, and further the blasting effect of the liquid oxygen blasting device is effectively improved.
After the filling work is finished, the liquid oxygen blasting device is further filled with liquid oxygen.
And S500, checking the electric detonating device, and performing ignition and detonation under the condition that the electric detonating device meets the ignition requirement.
After all the liquid oxygen blasting devices are installed, warning and cleaning the field according to blasting safety regulations, and simultaneously igniting after workers withdraw to a safe distance.
The method applies the principle that after liquid oxygen is ignited, a large amount of carbon dioxide and water vapor are instantly generated, and then the gas expands to crush the rock, compared with the explosive, the method has small blasting power, can effectively crush the rock, can also effectively avoid the damage of violent explosion to the surrounding environment, and does not pollute the environment.
Compared with a method for mechanically crushing rocks, the method can save a large amount of mining cost and greatly improve the rock mining speed.
Referring to fig. 2, in the method for breaking rock using air energy, the assembly of the liquid oxygen blasting device specifically includes the following steps:
s210, preparing a gun barrel according to the caliber of the drilled hole, wherein the gun barrel is used for storing liquid oxygen.
Specifically, after the drilling is completed, a proper gun barrel is prepared according to the caliber of the drilled hole, the gun barrel is preferably a PVC (polyvinyl chloride) barrel, and the gun barrel made of other materials can be selected.
When the PVC pipe is selected according to the caliber of the drilled hole, the diameter of the PVC pipe is 15mm-20mm smaller than that of the drilled hole, and the PVC pipe can be 0.3M higher than the drilled hole when inserted into the drilled hole.
S220, filling wet paper into the gun barrel, wherein the wet paper is used for wetting liquid oxygen.
Specifically, after the gun barrel is selected, soaking paper is filled into the gun barrel, wherein the soaking paper is preferably rice paper, and other toilet paper and the like can be adopted. After liquid oxygen is filled into the gun barrel, the soaking paper further soaks the liquid oxygen, so that explosion is caused after the liquid oxygen is ignited and rapidly combusted. When the rice paper is stuffed in the gun barrel, the whole gun barrel is stuffed with the rice paper between the bottom of the gun barrel and the position where the stemming is stuffed.
And S230, inserting an oxygen conveying pipe and placing a resistance wire ignition head into the middle of the gun barrel, wherein an oxygen leakage hole is formed in the part of the oxygen conveying pipe in the gun barrel, and the resistance wire ignition head is electrically connected with an external electric initiation device.
Specifically, after the rice paper is filled in the gun barrel, the oxygen conveying pipe is further inserted into the middle of the gun barrel, a resistance wire ignition head is arranged in the oxygen conveying pipe, the oxygen conveying pipe is preferably made of aluminum metal, and the resistance wire is preferably made of tungsten wires.
After the oxygen conveying pipe and the resistance wire ignition head are installed, the oxygen conveying pipe and the resistance wire ignition head are sealed by stemming, so that one part of the oxygen conveying pipe is arranged in the stemming, and the other part of the oxygen conveying pipe penetrates out of the stemming. Wherein, the oxygen tube is arranged on the part in the gun barrel, oxygen leakage holes are arranged on the bottom net every 0.7m, and the part of the oxygen tube extending out of the gun barrel is used for supplying liquid oxygen to the gun barrel.
The resistance wire ignition heads are arranged in the gun barrel at intervals of 2 m.
With continued reference to fig. 2, as a preferred embodiment of the method for assembling the liquid oxygen blasting device, after step S210, the method further includes step S211 of sealing the inside of the barrel with a plastic film.
Specifically, after selecting the barrel that the diameter size is suitable, seal the processing with plastic film or plastic bag with barrel inside, further fill into the plastic film with rice paper during, adopt the head of stemming preparation to fill after inserting the oxygen therapy pipe and placing resistance wire ignition head, the effectual gas tightness that improves liquid oxygen blasting device, and then improve the effect of liquid oxygen blasting.
Referring to fig. 3, as a preferred embodiment of the present invention, after step S200, the method further includes step S201 of inserting an exhaust pipe into the liquid oxygen blasting device, wherein the exhaust pipe is used for guiding out the gas oxygen evaporated in the liquid oxygen blasting device.
Specifically, after the liquid oxygen blasting device is assembled and before the blasting hole is placed, the air exhaust hose is arranged to penetrate through the seal head filled with the stemming, so that the phenomenon of air blockage caused by gasification of liquid oxygen after the liquid oxygen is filled in the blasting hole is prevented, and the working stability of the liquid oxygen blasting device is effectively guaranteed.
Referring to fig. 4, as a preferred embodiment of the present invention, before step S500, the method further includes step S500a of setting a bank delay time on the electric detonator, and setting the bank delay time to 0.25 seconds or 0.5 seconds.
According to the method for breaking the rock by utilizing the air energy, the target rock is provided with the drill hole, and the liquid oxygen blasting device is further assembled according to the caliber of the drill hole.
Preferably, a proper gun barrel (PVC pipe) is selected, a resistance wire ignition head made of plastic films, rice paper, aluminum oxygen conveying pipes and tungsten wires is arranged in the gun barrel, after an exhaust hose is further inserted, an assembled liquid oxygen blasting device is placed in a drill hole, liquid oxygen is filled into the liquid oxygen blasting device, and finally ignition is carried out under the condition that ignition is met.
Referring to fig. 5, the present invention further provides a liquid oxygen blasting device, which includes a gun barrel 200, a cap 300, an oxygen tube 400 and a resistance wire firing head 500.
The gun barrel 200 is used for storing liquid oxygen, the soaking paper 600 is filled in the gun barrel 200, the soaking paper 600 is used for soaking the liquid oxygen, one end of the gun barrel 200 is in a sealed state, the other end of the gun barrel 200 is filled with stemming to form the end socket 300, one end of the oxygen conveying pipe 400 is arranged in the gun barrel 200, the other end of the oxygen conveying pipe 400 penetrates out of the end socket 300, and the oxygen conveying pipe 400 is used for filling the liquid oxygen into the gun barrel 200.
The resistance wire firing head 500 is disposed within the barrel 200, and the resistance wire firing head 500 is electrically connected to an external electrical initiation device.
As a preferred embodiment of the liquid oxygen blasting device, the liquid oxygen blasting device further includes an exhaust pipe 700 and a plastic film 800.
Referring to fig. 5, the gun barrel 200 is packaged with a plastic film 800, the plastic film 800 is further filled with the wet dipping paper 600, the oxygen transfer tube 400 and the resistance wire ignition head 500 are further arranged in the middle of the gun barrel 200, the gun barrel 200 is sealed with a sealing head 300 made of stemming, and finally the exhaust tube 700 is inserted.
After the liquid oxygen blasting device is assembled, the liquid oxygen blasting device is placed in the drill hole 100, and the gap between the drill hole 100 and the liquid oxygen blasting device is further filled with stemming, chips and the like.
In the liquid oxygen blasting device provided by the invention, the oxygen conveying pipe 400 is preferably made of aluminum metal, and the resistance wire ignition head 500 is preferably made of tungsten wire.
Of course, the gun barrel 200, the end socket 300, the oxygen delivery tube 400, the resistance wire ignition head 500 and the exhaust tube 700 may be made of other materials, as long as the functions are realized, and the invention is within the protection scope of the invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A method of breaking rock using air energy, comprising:
opening a hole, and forming at least one drill hole in the target rock;
assembling a liquid oxygen blasting device, wherein the liquid oxygen blasting device is assembled according to the caliber of the drilled hole;
putting the assembled liquid oxygen blasting device into the drill hole;
filling the liquid oxygen blasting device in the drill hole, and filling liquid oxygen into the liquid oxygen blasting device;
and checking the electric initiation device, and performing ignition initiation under the condition that the electric initiation device meets the ignition condition.
2. A method of breaking rock using air energy according to claim 1, wherein said assembling a liquid oxygen blasting device comprises the steps of:
preparing a gun barrel according to the caliber of the drilled hole, wherein the gun barrel is used for storing liquid oxygen;
loading wet soaking paper into the gun barrel, wherein the wet soaking paper is used for soaking liquid oxygen;
and inserting an oxygen conveying pipe and placing a resistance wire ignition head into the middle of the gun barrel, wherein oxygen leakage holes are formed in the part of the oxygen conveying pipe in the gun barrel, and the resistance wire ignition head is electrically connected with the external electric initiation device.
3. The method for breaking rock using air energy according to claim 2, wherein in the step of assembling the liquid oxygen blasting device, after preparing a barrel for storing liquid oxygen according to the caliber size of the drilled hole, the step further comprises sealing the inside of the barrel with a plastic film.
4. The method of claim 1, wherein after the liquid oxygen blasting device is assembled, the method further comprises inserting an exhaust pipe into the liquid oxygen blasting device, the exhaust pipe being used for guiding out the gas oxygen evaporated in the liquid oxygen blasting device.
5. The method of utilizing air energy to break rock according to claim 1, wherein prior to said inspecting an electrical initiation device and firing said electrical initiation device in a condition sufficient for firing, said method further comprises providing a bank delay time on said electrical initiation device, said bank delay time being set to 0.25 seconds or 0.5 seconds.
6. A liquid oxygen blasting device applied to the method for breaking rock by using air energy as claimed in claim 1, wherein the liquid oxygen blasting device comprises:
the gun barrel is filled with wet soaking paper, and the wet soaking paper is used for soaking liquid oxygen;
the seal head is used for sealing the gun barrel;
one part of the oxygen conveying pipe is arranged in the gun barrel, the other part of the oxygen conveying pipe penetrates out of the end enclosure, oxygen leakage holes are formed in the part of the oxygen conveying pipe in the gun barrel, and the oxygen conveying pipe is used for filling liquid oxygen into the gun barrel;
the gun barrel comprises a resistance wire ignition head, wherein the resistance wire ignition head is arranged in the gun barrel and is electrically connected with an external electric initiation device.
7. The liquid oxygen blasting device of claim 6, further comprising an exhaust pipe, wherein one end of the exhaust pipe is inserted into the blast tube, and the other end of the exhaust pipe penetrates through the seal head.
8. The liquid oxygen blasting device of claim 6, further comprising a plastic film, wherein the plastic film is packaged in the barrel, and the plastic film is used for wrapping the wet dipping paper, the oxygen delivery pipe and the resistance wire firing head.
9. The liquid oxygen blasting apparatus of claim 6, wherein the oxygen tube is made of aluminum.
10. A liquid oxygen blasting device according to claim 6, wherein the resistance wire firing head is of tungsten wire material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210279907.0A CN114608396A (en) | 2022-03-21 | 2022-03-21 | Method for breaking rock by utilizing air energy and liquid oxygen blasting device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210279907.0A CN114608396A (en) | 2022-03-21 | 2022-03-21 | Method for breaking rock by utilizing air energy and liquid oxygen blasting device |
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| CN111174654A (en) * | 2020-03-25 | 2020-05-19 | 田永和 | Safe and environment-friendly gas mixed heat energy expansion device and construction method |
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