CN112229288B - Small-aperture shallow hole plugging method for model blasting experiment - Google Patents
Small-aperture shallow hole plugging method for model blasting experiment Download PDFInfo
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- CN112229288B CN112229288B CN202011101796.1A CN202011101796A CN112229288B CN 112229288 B CN112229288 B CN 112229288B CN 202011101796 A CN202011101796 A CN 202011101796A CN 112229288 B CN112229288 B CN 112229288B
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- 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
- F42D1/18—Plugs for boreholes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
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Abstract
The invention relates to a method for plugging a small-aperture shallow hole in a model blasting experiment, and belongs to the technical field of blasting experiments. The quick-adhesion powder, water and a liquid adhesive are uniformly mixed to obtain filling slurry; cleaning the small-aperture blast hole for the model test, placing the explosive at the bottom of the small-aperture blast hole according to the design requirement, adding the stuffing slurry into the small-aperture blast hole under the stirring condition, simultaneously adding the palm fiber, and stuffing the slurry for solidification to finish the small-aperture shallow hole stuffing of the model blasting test. Compared with conventional filling, filling time is saved, filling efficiency is improved, filling material strength is enhanced, punching of the blast hole is avoided, blasting effect is greatly improved, experimental errors are reduced, and accuracy of model experimental data is improved.
Description
Technical Field
The invention relates to a method for plugging a small-aperture shallow hole in a model blasting experiment, and belongs to the technical field of blasting experiments.
Background
The model experiment is an important means in scientific research, the model experiment is that a model which is similar to the principle but has a reduced size is manufactured according to the similar principle to carry out experimental research, the principle is converted according to the experimental result to predict the flow phenomenon which will occur in the prototype, the emphasis of the model experiment is to reproduce the physical essence of the flow phenomenon, and the model experiment is valuable only by ensuring that the physical essence of the flow phenomenon in the model experiment and the prototype is the same.
The big gun hole of little aperture is clogged to be an extremely difficult problem, if it is not good to fill the quality, appears dashing the big gun very easily, can make the explosive energy waste like this, also can make blasting effect poor, and the bold rate of rock is high, has the destruction that the drill way can be serious moreover to obtain accurate model experimental data.
The small blast hole filling has small hole diameter, and the filling quick-drying time is long due to the small amount of filling poured into the small blast hole filling each time, so that the time for filling the small blast hole is long.
Disclosure of Invention
The invention provides a method for filling a small-aperture shallow hole in a model blasting experiment aiming at the condition of filling a small blast hole in a model experiment.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a method for filling a small-aperture shallow hole in a model blasting experiment specifically comprises the following steps:
(1) uniformly mixing the quick-adhesion powder, water and a liquid adhesive to obtain filling slurry;
(2) cleaning the small-aperture blast hole for the model test, placing the explosive at the bottom of the small-aperture blast hole according to the design requirement, adding the stuffing slurry into the small-aperture blast hole under the stirring condition, simultaneously adding the palm fiber, and stuffing the slurry for solidification to finish the small-aperture shallow hole stuffing of the model blasting test.
The mass ratio of the quick-bonding powder, the water and the liquid adhesive in the filling slurry in the step (1) is 10:4-6: 1-2.
The liquid adhesive is commercially available glue, water-based environment-friendly glue, starch adhesive or rubber solution glue; the commercially available glue can be 801 building glue, 901 building glue, 107 building glue, 108 building environment-friendly glue or sBS resin glue;
the liquid-solid ratio mL: g of the stuffing slurry to the palm fiber in the step (2) is 3-5: 1; the palm fibers are matched with the quick-bonding powder, so that the solidification speed of the stuffing slurry can be increased, and the quick drying time of the stuffing is shortened;
furthermore, the aperture of the small-aperture blast hole is 10-20 mm, the aperture of the experimental shallow hole of the model is 20mm, the hole depth is 10-50 cm, and the hole depth of the model is 40 cm.
The invention provides a filling method aiming at the problems of filling of small-aperture shallow hole blasting, improving the filling time of small-aperture blast holes, improving the blasting effect, preventing punching, reducing the explosive consumption, reducing the cost and the like in a model experiment; the method can effectively improve the problems of the filling time of the small-bore blast hole and the quick drying time of the filling material, thereby shortening the filling time of the blast hole, ensuring that blasting can be carried out in time, reducing experimental errors through model experiments, and improving the accuracy of model experiment data.
The invention has the beneficial effects that:
the invention relates to a method for filling a small-aperture shallow hole in a model experiment, which comprises the steps of mixing quick-adhesion powder and a liquid adhesive during filling, stirring to prepare mixed slurry, adding a certain amount of palm fiber, pouring into a filling hole filled with a medicine, and stirring while chamfering to achieve the purpose that filling materials can be uniformly filled; add a quantitative palm fibre, can make and pack the material rapid-curing cutback time and shorten, thereby can shorten and pack the time, can improve and pack the quality, avoid appearing punching a hole, can improve the efficiency of construction, can ensure blasting quality, reduce the explosive quantity, practice thrift the cost, reasonable packing can prolong blasting gas action time, improve explosive explosion energy utilization, reduce flying stone and harmful gas, reduce the risk of explosions such as gas dust, improve the blasting effect, can ensure that the blasting operation can go on smoothly, can reduce experimental error through model experiment, improve model experiment data accuracy.
Drawings
FIG. 1 is a schematic diagram of a model blasting experiment blasthole plugging;
fig. 2 is a blasting field diagram of the model of example 3.
Detailed Description
The present invention will be further described with reference to the following embodiments.
Example 1: as shown in fig. 1, a method for plugging a small-aperture shallow hole in a model blasting experiment specifically comprises the following steps:
(1) uniformly mixing the quick-adhesion powder, water and a liquid adhesive to obtain filling slurry; wherein the mass ratio of the quick-bonding powder, the water and the liquid adhesive in the filling slurry is 10:4: 1; the liquid adhesive selected in the model experiment is commercially available glue, and the type of the commercially available glue is sBS resin glue;
(2) cleaning a small-aperture blast hole for a model test, placing an explosive at the bottom of the small-aperture blast hole according to design requirements, adding part of stuffing slurry into the small-aperture blast hole, then adding a palm fiber and stirring, repeatedly adding stuffing slurry and the palm fiber, and completing small-aperture shallow hole stuffing of the model blasting test after stuffing slurry is solidified; wherein the diameter of the blast hole with the small and medium diameters is 20mm, and the depth of the blast hole is 40 cm; the liquid-solid ratio mL/g of the filling slurry to the palm fiber is 3: 1;
the palm fibers are matched with the quick-bonding powder, so that the solidification speed of the stuffing slurry can be increased, and the quick drying time of the stuffing is shortened;
model experiments are carried out according to the proportion, and experiments show that the simulated mineral body is cracked, but the cracked cracks are not clear enough, and the stuffing part is damaged, which possibly causes that the water added into the stuffing is less, the stirring is not sufficient, the added palm fibers are more, the stuffing is not well carried out, and the stuffing strength is not enough.
Example 2: as shown in fig. 1, a method for plugging a small-aperture shallow hole in a model blasting experiment specifically comprises the following steps:
(1) uniformly mixing the quick-adhesion powder, water and a liquid adhesive to obtain filling slurry; wherein the mass ratio of the quick-bonding powder, the water and the liquid adhesive in the filling slurry is 10:6: 2; the liquid adhesive selected in the model experiment is commercially available glue, and the type of the commercially available glue is sBS resin glue;
(2) cleaning a small-aperture blast hole for a model test, placing an explosive at the bottom of the small-aperture blast hole according to design requirements, adding part of stuffing slurry into the small-aperture blast hole, then adding a palm fiber and stirring, repeatedly adding stuffing slurry and the palm fiber, and completing small-aperture shallow hole stuffing of the model blasting test after stuffing slurry is solidified; wherein the diameter of the blast hole with the small and medium diameters is 20mm, and the depth of the blast hole is 40 cm; the liquid-solid ratio mL/g of the filling slurry to the palm fiber is 4: 1;
the palm fibers are matched with the quick-bonding powder, so that the solidification speed of the stuffing slurry can be increased, and the quick drying time of the stuffing is shortened;
model experiments are carried out according to the proportion, and experiments show that the simulated mineral body is cracked, but the cracked cracks are not clear enough, and a small part of the stuffing is damaged; compared with the example 1, the specific gravity of water and glue is increased in the example 2, although the filling material can be uniformly stirred, the caking property of the filling material is better, but the liquid-solid ratio of the filling material to the palm fiber is still larger, so that the strength and the compactness of the filling material are insufficient, certain damage is caused to the filling material, and the filling material can lead to the unclear stripe of the burst simulated ore body.
Example 3: as shown in fig. 1, a model similar to the principle but with a reduced size is manufactured for experimental study through a model poured in the Dahongshan copper mine, and the principle is converted according to the experimental result, so that the experimental error can be reduced, and the accuracy of the experimental data of the model can be improved; a method for filling a small-aperture shallow hole in a model blasting experiment specifically comprises the following steps:
(1) uniformly mixing the quick-adhesion powder, water and a liquid adhesive to obtain filling slurry; wherein the mass ratio of the quick-bonding powder, the water and the liquid adhesive in the filling slurry is 10:6: 1; the model experiment selects a liquid adhesive as a commercially available glue, and the type of the commercially available glue is sBS resin glue;
(2) cleaning a small-aperture blast hole for a model test, placing an explosive at the bottom of the small-aperture blast hole according to design requirements, adding part of stuffing slurry into the small-aperture blast hole, then adding a palm fiber and stirring, repeatedly adding stuffing slurry and the palm fiber, and completing small-aperture shallow hole stuffing of the model blasting test after stuffing slurry is solidified; wherein the diameter of the blast hole with the small and medium diameters is 20mm, and the depth of the blast hole is 40 cm; the liquid-solid ratio mL/g of the filling slurry to the palm fiber is 5: 1;
the palm fibers are matched with the quick-bonding powder, so that the solidification speed of the stuffing slurry can be increased, and the quick drying time of the stuffing is shortened;
when filling, the building material is mixed with quick-bonding powder, water and commercially available glue, stirring is carried out to prepare filling slurry, a certain amount of palm fiber is added, the filling slurry is poured into a filling hole filled with the medicine, and stirring is carried out while chamfering, so that the filling material can be uniformly filled; the filling material quick-drying time can be shortened by adding a certain amount of palm fibers, so that the filling time can be shortened, the filling quality can be improved, punching is avoided, the construction efficiency can be improved, the blasting quality can be ensured, the explosive using amount can be reduced, the cost can be saved, the action time of explosive gas can be prolonged by reasonable filling, the explosive energy utilization rate can be improved, flying stones and harmful gas can be reduced, the risks of explosion such as gas dust and the like can be reduced, the blasting effect can be improved, the blasting operation can be ensured to be smoothly carried out, the experimental error can be reduced through a model experiment, and the accuracy of model experiment data can be improved;
the blasting site diagram of the model in the embodiment is shown in fig. 2, and as can be seen from fig. 2, the simulated ore body is cracked and the cracks of the simulated ore body are obvious through observation, but the stuffing basically can keep the original form and does not damage the cemented filling body model, so that the stuffing effect can ensure that the explosive does not have the punching phenomenon, the experimental error can be reduced through the model experiment, and the accuracy of the data of the model experiment is improved.
According to the invention, through reasonable proportioning, the blast hole filling material can meet blasting construction requirements and requirements on the performance of the filling material, for filling the small-aperture shallow-hole blast hole, quick-bonding powder, water and a liquid adhesive are uniformly mixed to obtain filling slurry, the filling slurry is poured into the blast hole filled with the powder, and the palm fiber is added, so that the quick drying time of the filling material can be shortened, the filling time can be shortened, the punching is avoided, the waste of explosives is reduced, the cost is saved, and the blasting efficiency is improved.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes and modifications can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (2)
1. A method for filling a small-aperture shallow hole in a model blasting experiment is characterized by comprising the following specific steps:
(1) uniformly mixing the quick-adhesion powder, water and a liquid adhesive to obtain filling slurry; wherein the aperture of the small-aperture blast hole is 10-20 mm, the hole depth is 10-50 cm, and the mass ratio of the quick-bonding powder, the water and the liquid adhesive in the filling slurry is 10:4-6: 1-2;
(2) cleaning a small-aperture blast hole for a model test, placing an explosive at the bottom of the small-aperture blast hole according to design requirements, adding a filling slurry into the small-aperture blast hole under the stirring condition, simultaneously adding a palm fiber, and solidifying the filling slurry to finish the filling of the small-aperture shallow hole for the model blasting test, wherein the liquid-solid ratio mL/g of the filling slurry to the palm fiber is 3-5: 1.
2. The method for plugging a small-aperture shallow hole in a model blasting experiment according to claim 1, wherein: the liquid adhesive is water-based environment-friendly glue, starch adhesive or rubber solution glue.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2291394C1 (en) * | 2005-06-03 | 2007-01-10 | Государственное образовательное учреждение высшего профессионального образования "Тихоокеанский государственный университет" (ГОУ ВПО "ТОГУ") | Combined stemming |
| CN104534947A (en) * | 2014-12-09 | 2015-04-22 | 葛洲坝易普力股份有限公司 | Method for quickly blocking blast hole |
| CN106288992A (en) * | 2016-08-10 | 2017-01-04 | 鞍钢集团矿业有限公司 | Application process for the environmental chemistry coalescence agent of surface mine explosion |
| CN107880862A (en) * | 2017-11-07 | 2018-04-06 | 西南石油大学 | A kind of sealing agent for improving bearing capacity and preparation method thereof |
-
2020
- 2020-10-15 CN CN202011101796.1A patent/CN112229288B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2291394C1 (en) * | 2005-06-03 | 2007-01-10 | Государственное образовательное учреждение высшего профессионального образования "Тихоокеанский государственный университет" (ГОУ ВПО "ТОГУ") | Combined stemming |
| CN104534947A (en) * | 2014-12-09 | 2015-04-22 | 葛洲坝易普力股份有限公司 | Method for quickly blocking blast hole |
| CN106288992A (en) * | 2016-08-10 | 2017-01-04 | 鞍钢集团矿业有限公司 | Application process for the environmental chemistry coalescence agent of surface mine explosion |
| CN107880862A (en) * | 2017-11-07 | 2018-04-06 | 西南石油大学 | A kind of sealing agent for improving bearing capacity and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 西北地区冻结岩石力学特性及爆破损伤评价模型试验研究;宋立伟;《中国博士学位论文全文数据库 工程科技II辑》;20150215;第75-82页 * |
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