KR101166776B1 - Induced method for control of blasting environment and back break - Google Patents

Abstract

PURPOSE: A blasting environment and overbreak control and guide method is provided to minimize a damaged area of bedrock by simultaneously blasting a plurality of cut surfaces and vibration controlling protection holes to effectively induce concentrated stress. CONSTITUTION: A blasting environment and overbreak control and guide method comprises the steps of: boring a plurality of cut surfaces and vibration controlling protection holes(1) in parallel to a predicted blasting line to the depth corresponding to the height of a bench and boring a plurality of main blasting holes(2), connecting a plurality of explosives(4,5) at regular intervals to a detonating fuse(3) in the plurality of cut surfaces and the vibration controlling protection holes, charging explosives in the main blasting holes, connecting a surface detonator to the main blasting holes at predetermined time intervals from the plurality of cut surfaces and the vibration controlling protection holes, attaching an instantaneous detonator to a pre-blasting start hole and connecting to a blasting machine, and detonating the explosives charged in the plurality of cut surfaces, the vibration controlling protection holes, and the main blasting holes at a time.

Description

INDUCED METHOD FOR CONTROL OF BLASTING ENVIRONMENT AND BACK BREAK}

The present invention relates to the blasting environment and the excavation control induction method used for two-free surface blasting, and more particularly, it is useful for the blasting of the urban trench for slope cutting and vibration control, in the case of slope cutting This single blasting simultaneously minimizes damage to the slope, thus maintaining and protecting the natural strength of the rock as it is, and by eliminating breaker work such as selecting the slope of the slope, the subsequent process is accelerated, reducing the construction period and cost In the blast blasting, the blasting is carried out after blasting the cutting surface between the security object and the blasting area where the blasting pollution is concerned (one blasting), which can raise the vibration reduction and blasting pattern for the security material. The present invention relates to a blasting environment and a overflow control guidance method that reduces costs and shortens the construction period.

In general, blasting when cutting a slope refers to blasting that is performed to make an inclined surface of an arbitrary angle on the target rock. In the case of forming the slope artificially, it is preferable to perform control blasting in order to reduce damage of the target rock to be blasted and to form a smooth fracture surface.

The basic principle of controlled blasting is to create a fracture surface that connects a ball to a ball by generating a crack around a ball formed in a target rock with a small dose. In general, the blasting method used does not sufficiently control the explosive energy of the explosives, so the target rock is subjected to a lot of damage, and there is a problem that it may be a mine.

Therefore, control blasting is used as a way to improve this problem. Control blasting that can be used include smooth blasting, pre-splitting, line drilling, cushion blasting, and the like.

Smooth blasting reduces the secondary work by mechanical force by smoothing the excavation surface in tunneling or underground excavation by blasting. By using the decoupling effect, damage to the target rock is less, smooth drilling surface is obtained, and pumice is less. However, in the rock with advanced joints, stratification, and convenience, such as chalcedony and crystalline schist, it is less effective and requires high drilling technology.

Pre-spliting is a method based on the principle of destruction similar to smooth blasting, but unlike smooth blasting, this blasting method is performed after forming the fracture surface by first blasting the excavation schedule line with a medicine pack. Although the number of drillings is smaller than that of the line drilling, skill is required in drilling, and the explosive energy propagates along the crack of the rock, so it is necessary to carefully determine the general matters of the blasting such as the loading amount and the spacing.

Line drilling is a method in which a series of balls are continuously drilled with a narrow ball spacing along the excavation line to induce the formation of a fracture surface when the blasting is performed. In the case of a medicine pack, it can be applied where it can affect the excavation line.Smooth because part of the explosive energy transmitted to the back when blasting is blocked by the balls drilled in the excavation line, it does not affect the rear rock. One side can be obtained. However, except for very homogeneous rock, the blasting results cannot be predicted, and due to the close space spacing, the drilling time and the drilling cost are high, and even a small drilling error may cause bad results.

Cushion Blasting Cushion Blasters charge a small amount of explosives, dispense completely, and dispense well. It is then burned after the main blasting. All colors mitigate impact from explosives and minimize gaps and stresses. The main blast hole must be blasted before the cushion blast hole is ignited and difficult to apply to a 90 ° corner without coupling with pre-spliting.

In the conventional control blasting method, after the second free surface blasting is performed, the additional work of smoothing the slope of the target rock cut out using the secondary blasting or the breaker is performed. It is required, there is a disadvantage that the reinforcement work should be made to the rock or damaged target rock.

Korean Patent No. 10-0417877 describes a C.P.S (cut pre-splitting) blasting method which is an improvement of a N.P.S (new pre-splitting) blasting method that improves pre-spliting. It drills the medicinal and armed medicinal at regular intervals, connects the two-layered medicinal layers with a small amount of explosives, black powder and dopyeok to each other, and blasts using detonation parallax of the primer. It is a useful blasting method for blasting urban areas that form artificial tomographic planes by cutting the rock with vibration and noise reduction effect without filling violence with stratified charges. However, such a blasting method has a disadvantage in that the use of a primer is increased, the space spacing is dense, the drilling time and the drilling cost increase, and the construction section is also limited.

In order to minimize the damage area of the target rock, the control blasting can be effected so that the stress concentration effect by the simultaneous detonation can be fully effected. In addition, since the cut surface of the target rock is affected by various matters performed during the blasting operation such as drilling angle, hole spacing, resistance line, and loading condition according to the physical and mechanical properties of the target rock, appropriate control blasting method should be performed. do.

Korea Patent Publication 10-2011-0023968

The present invention has been devised in view of the above problems, and it is economical, efficient and stable blasting by minimizing the damage area of the target rock when the slope is cut in two free surface blasting, and minimizing the secondary work by forming a smooth cut surface. The aim is to provide an environment and overflow control guidance.

As described above, an object of the present invention is to drill a plurality of cutting surfaces and vibration control protective holes in a row in the target rock at a depth corresponding to a bench height in parallel with an excavation schedule of the target rock, and the plurality of cutting surfaces and vibrations. Drilling a plurality of main blasting holes according to the control guard and the separation distance according to the regulations; Coupling a plurality of explosives to the dopant at regular intervals to the plurality of cutting surfaces and the vibration control protective hole (including a layered charge using a non-electric primer on the explosive attached to the dopant); Connecting the surface primer to the main blasting hole from the plurality of cutting surfaces and the vibration control protective hole at a predetermined time difference, and then attaching a net primer to the blasting start hole to connect the blasting machine (igniter); It can be achieved by providing a blasting environment and the excitation control guidance method comprising a; blasting the explosives charged in the plurality of cutting surface and vibration control protection ball and the main blasting hole at a time with the blasting machine (igniter).

In this case, the plurality of cutting surfaces, the vibration control protective hole and the main blasting hole are continuously connected to the surface primer of a predetermined parallax, and the blasting is started by attaching the net primer at the time of the preceding blasting.

In addition, the explosives of the explosive line bottom of the plurality of explosives charged to the cutting surface and the vibration control protection hole uses a explosive 50mm in diameter, and the remainder attaches explosives having a diameter of 25mm to the drapery at regular intervals.

In addition, the cutting surface and the inside of the vibration control protection hole filling the space except the plural explosive line and the plurality of explosives with the whole material causes suppression of the blast noise and the non-coloring material between the explosives attached at regular intervals to the dopant line. Therefore, even if the color is short, there is a scattering reduction effect. Therefore, it is more efficient to use dry colorants rather than colorants with water content for complete coloration.

In addition, the higher the specific gravity of the particles, such as stone powder, the better the color development effect, the size of the color material is preferably 5mm or less.

In addition, the interval between the plurality of cutting surface and the vibration control protection hole is possible to adjust the interval by the charge amount of the explosives charged in the cutting surface and the vibration control protection hole, and the test blasting to adjust the amount and the cutting surface And through the adjustment of the vibration control protective hole spacing can be predicted the beautiful fracture surface and vibration reduction by the standard blasting.

In addition, when the amount of explosives charged in the plurality of cutting surfaces, the vibration control protective hole and the main blasting hole exceeds the allowable standard of vibration or noise, the target rock is divided into several parts and each part of the partitioned target rock It is preferable to modify the process to blast the target rock.

In addition, it is possible to increase the drilling efficiency by varying the pore diameter of the plurality of cutting surfaces and the vibration control protection hole (65mm) and the main blasting hole (75mm), and considerably consider the blasting noise and scattering for the cutting surface and the vibration control protection hole. Even if the cover is free, the air gap is free, so there is no significant change in the blasting result. Therefore, it is preferable to cover the blasting noise rather than using the blasting mat.

According to the blasting environment and the excavation control induction method according to an embodiment of the present invention as described above, since a plurality of cutting surfaces and vibration control protective holes are simultaneously detonated, stress concentration is more effectively generated, thereby minimizing damage areas of the target rock, and smoothing. One fracture surface can be obtained. Therefore, since the secondary work of the cut surface of the target rock is minimized, the economical efficiency and efficiency of 2 free surface blasting are improved, and the environmental problems of blasting can be reduced, and stability can be improved.

In addition, since the explosives inside the cutting surface and the vibration control protection hole are ignited at the same time as the exposure line, the explosive power is increased, and the resistance of the cutting surface and the vibration control protection hole is increased relatively large. The cutting surface and the lower part of the vibration control protection hole can be effectively crushed. In addition, by combining the explosives with a certain interval at the cutting line and the vibration control protective hole in proportion to the fabric factory, it is possible to significantly reduce the occurrence frequency of gemstones in terms of crushing granularity.

1 is a flow chart showing a blasting environment and the excavation control guide method according to an embodiment of the present invention;
Figure 2 is a perspective view showing a plurality of cut surfaces and vibration control protection hole and the main blasting hole formed on the target rock to be blasted to perform the blasting environment and the excavation control induction method according to an embodiment of the present invention;
3 is a connection diagram connecting explosives of a plurality of cutting surfaces and vibration control protection holes and explosives of a main blasting hole to be carried out to a blasting environment and a rocking control guide method according to an embodiment of the present invention;
Figure 4 is a schematic diagram schematically showing the sequence of detonation of the cutting surface and vibration control protection hole and the main blasting hole when performing the blasting environment and the excavation control induction method for an embodiment of the present invention;
5 is a cross-sectional view schematically showing a cross section of the cutting surface and the vibration control protection hole and the main blasting hole for performing the blasting environment and the excavation control induction method according to an embodiment of the present invention;
6 is an enlarged cross-sectional view showing an enlarged main blast hole of FIG.
FIG. 7 is an enlarged cross-sectional view illustrating the cutting surface and the vibration control protective hole of FIG. 5 in an enlarged manner.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the blasting environment and the excitation control induction method according to the present invention.

However, in the following description of the present invention, if it is determined that the detailed description of the related known functions or components may unnecessarily obscure the subject matter of the present invention, the detailed description and the detailed illustration will be omitted.

1 is a flow chart showing a blasting environment and the excitation control guide method according to an embodiment of the present invention. Figure 2 is a perspective view showing the arrangement of a plurality of cutting surface and vibration control protection hole and the main blasting hole formed on the target rock to be blasted to perform the blasting environment and the excavation control induction method according to an embodiment of the present invention, Figure 3 In order to perform the blasting environment and the excavation control induction method according to an embodiment of the present invention, a view showing an example of a connection connecting the explosives of the plurality of cutting surfaces and vibration control protective holes and the explosives of the main blasting hole formed in the target rock mass . Figure 4 is a schematic diagram schematically showing the sequence of detonation of the cutting surface and vibration control protection hole and the main blasting hole when performing the blasting environment and the excavation control induction method according to an embodiment of the present invention.

Referring to Figure 1, the blasting environment and the excavation control induction method according to an embodiment of the present invention is largely drilling step (S1), full width drug manufacturing step (S2), charge step (S3), wiring step (S4), and Detonation step (S5) may be included.

Drilling step (S1) refers to the step of forming a ball (1, 2) for charging explosives on the target rock 100 to cut the slope by blasting the two free surface.

That is, in the drilling step, as shown in FIG. 2, the target rock 100 has a depth corresponding to the bench height in parallel with an excavation schedule line (for example, a surface which becomes a slope after blasting) 110 of the target rock 100. ) To form a plurality of cutting surface and the vibration control protection hole (1) in a row. That is, the heat formed by the plurality of cutting surfaces and the vibration control protecting hole 1 is drilled in the target rock 100 so as to be parallel to the excavation schedule line 110. In addition, the plurality of cutting surfaces and the drilled inclination θ2 of the vibration control protective hole 1 are formed parallel to the slope of the target rock 100. That is, the plurality of cutting surfaces and the drilling inclination θ2 of the vibration control protective hole 1 and the inclination θ1 of the slope may be formed to be substantially the same. The slope of the slope may be set to a size that allows the slope to remain stable after being cut off.

The spacing between the plurality of cutting surfaces and the vibration control guards 1 is determined by the explosives 4 and 5 loaded on the cutting surfaces and the vibration control guards 1 and the plurality of cutting surfaces and the vibration control guards 1. It can be determined so that a smooth fracture surface can be obtained in between. In other words, the interval between the plurality of cutting surfaces and the vibration control protective hole 1 needs to be determined so that the amount of charges stored in the cutting surface and the vibration control protective hole 1 is not exaggerated or weakly charged. If the gap between the cutting surface and the vibration control protection hole 1 is too narrow, it will affect the fracture surface of the bench and if the interval is too wide, it will not be able to form the fracture surface. Therefore, the spacing between the plurality of cutting surfaces and the vibration control protective hole 1 can be appropriately determined according to the type of explosives used, the condition of the rock and the change of the fabric mill.

Further, in the drilling step, before the plurality of cutting surfaces and the vibration control protection hole 1 are formed, after the plurality of cutting surfaces and the vibration control protection hole 1 are formed, or the plurality of cutting surfaces and the vibration control protection hole ( When forming 1), a plurality of main blast holes 2 can be formed. As shown in FIG. 4, the plurality of main blasting holes 2 is a cutout surface formed by the plurality of cutting surfaces and the vibration control guard 1, and the exposed side of the column A and the target rock 100. It is formed in the area to be removed by blasting between (free surfaces), that is, the blasting portion of the target rock 100. That is, the plurality of main blasting holes 2 are formed in the blasting portion of the target rock bed 100 spaced apart from the plurality of cutting surfaces and the vibration control protective hole 1. The plurality of main blasting holes 2 can be drilled in a pattern suitably designed according to the condition of the rock, the number of free surfaces, the height of the bench, and the like. The main blasting hole 2 may be formed in parallel with the cutting surface and the vibration control protective hole 1 as shown in FIG. That is, the plurality of main blasting holes 2 and the cutout surface and the vibration control protective hole 1 may be formed to have the same puncturing slope θ2.

In addition, the diameter of the plurality of cutting surfaces and the vibration control protective hole 1 (ie, the drilling diameter) is 65mm for improving the blasting efficiency and improving the blasting environment, and the diameter of the main blasting hole 2 (ie, the drilling diameter) is 75mm. It is preferable to form. However, the diameters of the plurality of cutting surfaces and the vibration control protective hole 1 and the main blast hole 2 can be appropriately determined according to the height of the bench and the allowable charge amount in the field.

In the full width drug manufacturing step (S2) to produce the full width drug (4, 5, 9) to be charged in the plurality of cutting surface and the vibration control protection hole (1) and the main blasting hole (2) formed in the drilling step (S1). The full width medicines (4, 5) used for the plural cutting surfaces and the vibration control protective hole (1) and the full width medicines (9) loaded in the main blasting hole (2) can be made into the explosives used in the general 2 free surface blasting. have.

In the charging step S3, the full width medicines 4, 5, and 9 produced in the full width medicine manufacturing step S2 are charged to the plurality of cut surfaces and the vibration control protective hole 1 and the main blasting hole 2.

That is, a plurality of explosives (4, 5) are arranged in the cutting surface and the vibration control protective hole (1) as shown in Figs. In this case, the plurality of explosives 4 and 5 may be connected using the dopant line 3. That is, the plurality of explosives 4 and 5 are coupled to the dopant line 3 at regular intervals to be charged in the cutout surface and the vibration control protective hole 1. The depth of the cutout surface and the vibration control protector 1, that is, the fabric mill is set to the height of the bench, and the longer the fabric mill, the greater the resistance of the rock under the cut surface and the vibration control protector 1. Therefore, the charge amount of the explosive charge 5 charged under the cutout surface and the vibration control protective hole 1 can be determined in proportion to the fabric factory of the cutout surface and the vibration control protective hole 1. That is, the explosives 5 charged to the cutting surface and the bottom of the vibration control protective hole 1 are formed to have a larger diameter than the other explosives 4 among the plurality of explosives charged to the cutting surface and the vibration control protective hole 1. And, the remaining explosives 4 may be formed so that the weak diameter is the same. When the cutting surface and the vibration control protective hole 1 are charged in this arrangement, the plurality of explosives 4 and 5 are also almost simultaneously when the doped wire 3 inserted in the cutting surface and the vibration control protective hole 1 is ignited. Since the explosion is ignited, the pressure caused by the blasting becomes negative (+), thereby increasing the blasting power. In addition, by combining the explosives 4 and 5 at regular intervals in proportion to the cutting plant and the fabric of the vibration control protective hole 1, the occurrence frequency of the stones can be significantly reduced in terms of crushing granularity. . In addition, the cut surface by the explosives (4, 5) due to the different arrangement of the explosives (4, 5) and the weak diameter of the explosives (4, 5) to be stored in the cutting surface and the vibration control protective hole (1) And when the vibration control protective hole 1 explodes, the blasting environment such as vibration control and excavation control becomes better.

The explosives (4, 5) coupled to the dopant line (3) vary in specifications, such as the diameter and length of the explosive, depending on the manufacturer, but can be determined differently depending on the cutting surface and the drilling diameter or rock condition of the vibration control protective hole (1). have. For example, when the drilling diameter is 65mm, the explosives 5 below the cutout surface and the vibration control protective hole 1 may use 50mm, and the other portions may use 25mm explosives.

The dopant wires 3 inserted into each of the plurality of cutting surfaces and the vibration control protective hole 1 are respectively connected to the plurality of surface primers 7-0 as shown in FIG. 3, and the dopant wires 3 are connected. A plurality of surface primer (7-0) is connected to the rapid primer (8) using a connecting tube (7a).

In addition, the cutout surface and the vibration control protective hole 1 are completely colored using the color material 11. That is, as shown in FIG. 7, the empty space other than the space occupied by the explosives 4 and 5 and the exposure line 3 in the cutout surface and the vibration control protection hole 1 may be cut out using the full material 11. Completely fill the top of the vibration control protective hole (1). Incomplete coloration of the cutout surface and the vibration control protective hole 1 results in scattering and noise due to the co-occurrence phenomenon, and the explosive energy of the explosive cannot be sufficiently exhibited. Therefore, all cutting surfaces and the vibration control protective hole 1 can withstand the pressure of the generated gas (Gas) due to the blasting and can be firmly compacted because the compression ratio is not small so that the explosive energy of the explosive can be sufficiently exhibited. Using a small developer (11) to complete the color to the tool. In addition, the whole material 11 can fill the empty space of the cutting surface and the vibration control protection hole 1 easily and quickly and reliably, and it is good to have a characteristic which does not burn. As such a chromosome 11, stone powder or sand having a particle size of 5 mm or less may be used. In addition, the exposure line 3 branched on the surface of the target rock 100 can also be colored to prevent environmental problems due to blasting.

The lower portion of the plurality of main blast hole (2) is charged with a full width medicine (9) used for the general two-free surface blasting and is connected to the non-electrical cochlear primer (6). The main blast hole (2) is charged using the cochlear primer (6), which is a non-electrical primer having a long parallax such that the plurality of cutting surfaces and the vibration control protective hole (1) are all detonated and then detonated. The non-electrical cochlear primer 6 includes a detonator 6b inserted into the full width medicine 9 and a connection tube 6a connected to the detonator 6b. The inner space of the main blast hole (2), except for the space where the non-electric co-exposure primer (6) and the full width medicine (9) is installed, should be completely colored with the chromosome (11). The color material 11 can use the same thing as the color material 11 used for the cutting surface and the color of the vibration control protection hole 1.

The connection step (S4) is to connect the explosives (4, 5) of the plurality of cutting surfaces and the vibration control protective hole (1) and the explosives (9) of the plurality of main blasting holes (2) to be detonated by one blasting. Say. In the present invention, the plurality of cutting surfaces and the vibration control protection hole 1 are all detonated, and then the plurality of main blasting holes 2 are connected so that they are sequentially blasted.

That is, as shown in FIG. 7, the plurality of explosives 4 and 5 installed in the cutout surface and the vibration control protective hole 1 are connected to each other by the dopant line 3, and the plurality of cutout surfaces and the vibration control protective hole are shown in FIG. 7. The dopants 3 inserted in (1) are connected to the surface primer 7 as shown in FIG.

The full width medicine 9 installed in the plurality of main blasting holes 2 is connected to the cochlear primer 6 which is a non-electric primer as shown in FIG. 6. Connect the connecting tube (6a) of the non-electrical cochlear primer (6) from the two main blast hole (2) to the surface primer (7). In addition, the plurality of surface primer 7 is connected so that it can be sequentially detonated. The surface primer 7 is a kind of non-electric primer, which has a certain time difference, and is connected to the primer 7b and the primer 7b which can connect the connecting tubes 6a of the plurality of non-electrical co- primers 6. It comprises a connecting tube (7a) of the type. Here, the connection of the non-electromagnetic co-priming primer (6) from the two main blast hole (2) to one surface primer (7) is only one example, if necessary, the non-electro-electric co- primer from the three or more main blast hole (2) (6) can be connected to one surface primer (7). Here, connecting the non-electrically depressive primer 6 to the surface primer 7 means connecting the connection tube 6a of the non-electrically depressive primer 6 to the primer 7b of the surface primer 7. Connecting the surface primer 7 to each other means connecting the connection tube 7a of one surface primer 7 to the primer 7b of the other surface primer 7.

As an example of a method of connecting the plurality of main blast holes (2), the method of connecting the non-electric coplanar primer (6) of the plurality of main blast holes (2) using the surface primer (7) in detail Explain. In the following description and reference numerals 6-1,6-2,6-3,6-4,6-5,6-6,6-7,6-8 in the description and FIG. , Reference numerals 2-1,2-2,2-3,2-4,2-5,2-6,2-7,2-8 are the main blast holes (2) into which the non-electrical submerged primer (6) is inserted. 7-0 represents the surface primer 7 connected to the doping line 3 from the cutout surface and the vibration control protective hole 1 as described above, and 7-1,7-2,7-3,7 -4 represents the surface primer 7 to which the non-electrical cochlear primer 6 is connected.

Non-electromagnetic co-priming primer (6-1) of the first blast hole (2-1) and co-priming primer (6-2) of the second blast hole (2-2), that is, two non-electric co-operative primers (6-1) 6-2) is connected to the first surface primer 7-1. Similarly, the connecting tubes 6a of the non-electrical cochlear primers 6-3 and 6-4 of the third blast hole 2-3 and the fourth blast hole 2-4 are replaced with the second surface primer 7-2. And the connecting tube 6a of the non-electrical cochlear primers 6-5 and 6-6 of the fifth and sixth blast holes 2-5 and 2-6 to the third surface primer 7-3. And the connecting tube 6a of the non-electromagnetic cochlear primer (6-7.6-8) of the seventh and eighth blast holes (2-7, 2-8) to the fourth surface primer (7-4). do. After that, the first to fourth surface primers 7-1 are connected in sequence. That is, the connecting tube 7a of the second surface primer 7-2 is connected to the first surface primer 7-1, and the connecting tube 7a of the third surface primer 7-3 is the second surface. It is connected to the primer 7-2, and the connecting tube 7a of the fourth surface primer 7-4 is connected to the third surface primer 7-3. Non-electrical cochlear primer (6) of a plurality of main blast holes (2-1,2-2,2-3,2-4,2-5,2-6,2-7,2-8) with the above structure Wiring, the explosives 4 and 5 of the plurality of cutting surfaces and the vibration control protective hole 1 are detonated, and then the second blasting hole 2-2 and the fourth blasting hole ( 2-4), explosives 9 of the sixth main blasting hole (2-6) and the eighth main blasting hole (2-8), and the first main blasting hole (2-1) in the rear row (C), The explosives 9 of the third blasting hole 2-3, the fifth (2-5), and the seventh main blasting hole 2-7 are sequentially made. That is, as illustrated in FIG. 4, after the plurality of cutting surfaces of the target rock 100 and the column A of the vibration control protective hole 1 are detonated one by one, the explosive charges stored in the main blasting hole 2 are shown. Like the cutout surface and the vibration control protective hole 1, the balls are detonated one by one in the order of B and C rows. Like this, the entire main blast hole (2-2,2-4,2-6,2-8) and the rear main blast hole (2-1,2-3,2-5,2-7) Detonation is achieved by designing the non-electromagnetic cochlear primers 6-1 to 6-8 connected to each of the main blast holes to detonate with time difference.

Subsequently, the surface primer 7-0 connected to the first cutting surface and the vibration control protective hole 1 among the plurality of cutting surfaces and the vibration control protective hole 1 is connected to the rapid primer 8. The surface primer 7-0 connected to the last cutting surface and the vibration control protection hole 1 among the plurality of cutting surfaces and the vibration control protection hole 1 is connected to the first surface primer 7-1 and the connection tube 7a. Use to connect. Therefore, when the explosive primer 8 is operated, the explosives of the cutting surface and the vibration control protective hole 1 are all detonated in turn, and then the explosives of the main blasting hole 2 are detonated. That is, after the explosives 4 and 5 of the cutting surface and the vibration control protection hole 1 formed on the rightmost side of the plurality of cutting surfaces and the vibration control protection hole 1 are detonated, Main explosives (2-1,2-3,2-5,2) in the entire (9) and rear row (C) of the main explosives (2-2,2-4,2-6,2-8) -7) is provided to sequentially detonate the entire explosive (9).

The quick primer 8 is connected to a blast device (igniter) 8a capable of igniting the quick primer 8.

Detonation step (S-5) operates the blasting machine (8a), the explosives (4,5) and the explosives (9) of the plurality of main blasting holes (2) loaded in the plurality of cutting surfaces and the vibration control protective hole (1) By exploding refers to forming an excavation surface in the target rock (100).

When the operator operates the blasting machine 8a, the initial primer 8 is detonated and the surface primer 7-connected to the first cutting surface and the vibration control protecting hole 1 among the plurality of cutting surfaces and the vibration control protecting hole 1. 0) is detonated to ignite the dopant line 3 connected to the explosives 4 and 5, and to the final cutout and the surface primer 7-0 of the vibration control protective hole 1 of the plurality of main blasting holes 2 The connecting tube 7a of the first surface primer 7-1 connecting the explosives 9 is ignited.

When the depletion line 3 is ignited, the detonation speed of the depletion line 3 is rapid, and the explosive charges 4 and 5 charged to the plurality of cutting surfaces and the vibration control protective hole 1 explode almost simultaneously. When the explosives (4, 5) of the plurality of cutting surfaces and the vibration control protective hole (1) at the same time, the stress concentration is effectively generated, so that between the plurality of cutting surfaces and the vibration control protective hole (1) is broken smoothly, Damage area due to this can be minimized. If the cut surface of the target rock 100 is formed to be smooth, it is economical because secondary work such as secondary blasting or breaker work to smooth the cut surface is reduced. In addition, if the damaged area is minimized during the blasting work, the target rock can maintain the original natural strength.

Meanwhile, when the connecting tube 7a of the first surface primer 7-1 connected to the surface primer 7-0 of the last cut surface and the vibration control protective hole 1 is ignited, the first surface primer 7 after a predetermined time. -1) to detonate the primer portion 7b, and the primer portion 7b of the first surface primer 7-1 is the main blast hole (2-2, 2-4, 2-6) in the front row (B). Ignite each non-electrically depressed primer (6-2, 6-4, 6-9, 6-8) connected to explosive (9) of 2-8). Then, after the blasting of the plurality of cutting surfaces and the vibration control protective hole 1 is completed, the explosives 9 of the main blasting holes 2-2, 2-4, 2-6, 2-8 in the front row B are obtained. ) Is detonated one by one. When the explosives 4 and 5 of the plurality of cutting surfaces and the vibration control protective hole 1 are detonated and precisely expressed, the last cutting surface and the vibration control protection among the plurality of cutting surfaces and the vibration control protective hole 1 When the explosives (4, 5) of the ball (1) is detonated and the second blast hole (2-2) in the front row (B) There should be a certain time difference between the explosions of the explosives (9). That is, the first surface primer 7-1, which detonates the explosives 9 of the second blasting holes 2-2 in the front row B, has the explosives of the plurality of cut surfaces and the vibration control protective holes 1 ( 4,5) and (i.e., not detonated at the same time), and have a certain time difference so that the explosives (4,5) of the plurality of cutting surfaces and the vibration control protective hole (1) can all be detonated after being blown out.

The first surface primer 7-1 connected through the surface primer 7-0 and the connecting tube 7a is detonated after the cutting surface and the vibration control protective hole 1 are detonated, and then the second surface primer 7- 2) to the fourth surface primer 7-4 are detonated in turn, a non-electrical co-detonator in the front row B connected to the first surface primer 7-1 to the fourth surface primer 7-4. (6-2,6-4,6-6,6-8) are ignited and the main blast hole (2) in the front row (B), ie the second blast hole (2-2), the fourth blast hole (2) -4), the sixth blast hole (2-6) and the explosives (9) of the eighth blast hole (2-8) are detonated one by one.

Thereafter, the non-electrical cochlear primer (6-1,6-3,6-5,6-) in the column C after being connected to the first surface primer 7-1 to the fourth surface primer 7-4. 7) is ignited, the main blasting hole (2) in the rear row (C), that is, the first main blasting hole (2-1), the third main blasting hole (2-3), the fifth main blasting hole (2-5), The explosives 9 of the seventh blast holes 2-7 are detonated one by one.

As described above, the plurality of main blasting holes 2 have the front row B and the rear row C detonated sequentially after the blasting of the plurality of cutting surfaces and the vibration control protective hole 1, thus the cutting surface and the vibration Due to the fracture surface generated by the control protective hole 1, when the plurality of main blast holes 2 explode, the explosion occurs in a direction parallel to the cut surface, which becomes a slope, so that damage to the target rock 100 is minimized and smoothed. One fracture surface can be obtained.

In the above, the case where the target rock 100 is cut by one blasting has been described. However, the blasting environment and the excavation control guide method according to the present invention are not limited thereto. 2 If the rock to be blasted is too large, or the size of the rock is not large, but the amount of explosives charged in the plural cutting surfaces and the vibration control protector and the main blasting hole exceeds the limit for vibration or noise The rock can be divided into several parts, and the above-described blasting environment and the excavation control guide method can be executed for each of the partitioned target rocks. The blasting method of the target rock mass is divided into a plurality of target rock masses having a predetermined size, and the above-described blasting environment and overmolding method are repeatedly performed for each of the partitioned target rock masses by repeatedly performing the above-described blasting environment and overcast control guide method. Since it is the same as the control induction method, detailed description is omitted.

The present invention is not limited to the specific embodiments described above, but a simple component that can be carried out by a person of ordinary skill in the art without departing from the spirit of the invention described in the claims below. Substitutions, additions, deletions, and alterations fall within the scope of the claims.

One; Cutting surface and vibration control protector
2,2-1,2-2,2-3,2-4,2-5,2-6,2-7,2-8; Main blaster
3; A detonation line
4,5; Explosives
6,6-1,6-2,6-3,6-4,6-5,6-6,6-7,6-8; Non-electrical primer
7,7-0,7-1,7-2,7-3,7-4; Surface primer
8; A quick primer
8a; Blaster
9; Full width medicine
100; Target rock mass

Claims (5)

A plurality of cutting surfaces and vibration control protective holes 1 are drilled in a row in the target rock at a depth corresponding to a bench height parallel to the excavation schedule of the target rock, and the plurality of cutting surfaces and vibration control protecting holes 1 Drilling a plurality of main blasting holes (2) having a diameter larger than that of the cutting surface and the vibration control protecting hole (1) spaced apart from the target rock;
A plurality of explosives (4, 5) are coupled to the dopant line (3) at regular intervals in the plurality of cutout surfaces and the vibration control protective hole (1), and the plurality of cutouts are used using the dopant line (3). And coupling the surface primer 7-0 to the vibration control protective hole 1, respectively.
In the cutting surface and the inside of the vibration control protective hole (1) as a whole material 11 containing stone powder and sand having a size of 5 mm or less in the space excluding the dopyeong line (3) and a plurality of explosives (4, 5) Filling step;
Explosives to the plurality of main blasting holes (2) using the non-electrically spaced bottom primer (6) connected to the plurality of main blasting holes (2) so that the plurality of cutting surfaces and the vibration control protection hole (1) is detonated and then detonated Charging (9);
The non-electrical cochlear primer 6 of the plurality of main blasting holes 2 is connected to the surface primer 7, but the co-priming primers 6-1 and the second main blasting hole 2 of the first main blasting hole 2-1. -2) of the non-electrically depressive primer (6-2) is connected to the first surface primer (7-1) using a connecting tube (6a), the non-electrically depressed primer of the third blast hole (2-3) 6-3) and the non-electromagnetic cochlear primer (6-4) of the fourth blast hole (2-4) is connected to the second surface primer (7-2) using a connecting tube (6a), the fifth blast hole (2-5) of the non-electrically depressive primer (6-5) and the sixth blast hole (2-6) of the non-electrically depressive primer (6-6) is connected to the third surface primer (7-3) tube (6a) ), And the non-electric cochlear primer (6-8) of the seventh blast hole (2-7) and the non-electric cochlear primer (6-8) of the eighth blast hole (2-8) are the fourth surface. The first surface primer 7-1 is connected to the primer 7-4 using a connection tube 6a, and the surface primer 7-0 and the connection tube of the cutout surface and the vibration control protective hole 1 are connected to each other. Using 7a) The second surface primer 7-2 is connected to the second surface primer 7-2, and the third surface primer 7-2 is connected to the third surface primer 7-3 using a connecting tube 7a. (7-3) is connected to the fourth surface primer (7-4) by using a connecting tube (7a), and connected to the non-electrical cochlear primer (6-1, 6-2) of the plurality of main blast holes (2) A surface primer 7-1 is connected to the surface primer 7-0 of any one of the plurality of cutting surfaces and the vibration control protective hole 1 through a connecting tube 7a, and the plurality of cutting surfaces and the vibration The other surface primer 7-0 connected through the dopant line 3 of the control guard 1 is connected to the explosive primer 8, and the explosive primer 8 is connected to the blasting machine 8a. Connecting; And
The explosive device (igniter) (8a) to detonate the explosives (4, 5) and the explosives (9) stored in the main blasting hole (2) of the plurality of cutting surface and the vibration control protection hole (1), the cutting surface And when the surface primer 7-0 of the vibration control protective hole 1 is detonated and the first surface primer 7-1 to the fourth surface primer 7-4 are sequentially detonated, the plurality of main blasting holes 2 A plurality of main blast holes (2-2, 2-4, 2) in the front row (B) by the time difference design of each of the non-electrical cochlear primers 6-1 to 6-8 coupled to -1 to 2-8) After the explosive (9) of -6,2-8 has been detonated one by one, a plurality of main blast holes (2-1,2-3,2-5,2-) in the rear row (C) with time difference Causing the explosives 9 of 7) to detonate one by one;
Blasting environment and overcast control induction method comprising a. The method of claim 1,
The explosives of the bottom of the plurality of explosives charged to the cutting surface and the vibration control protection hole has a weaker diameter than the other explosives, and the other explosives are formed to have the same diameter. The method of claim 1,
The spacing between the plurality of cutting surfaces and the vibration control protection hole is determined to obtain a smooth fracture surface between the plurality of cutting surfaces and the vibration control protection hole by explosive charges charged in the cutting surface and the vibration control protection hole. Blasting environment and overbreak control guidance method characterized in that the loss. The method of claim 1,
If the amount of explosives charged in the plurality of cutting surfaces, the vibration control guards and the main blasting hole exceeds the allowable standard of vibration or noise, the target rock is divided into several parts and each part of the partitioned target rock Blasting the target rock by performing the control blasting method described in claim 1, characterized in that the blasting environment and the excavation control guidance method. The method of claim 1,
The blasting environment and the excitation control guide method, characterized in that the diameter of the plurality of cutting surface and the vibration control protection hole is formed to 65mm, the diameter of the main blasting hole is 75mm.

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