Blast hole arrangement structure for one-time blasting well formation in high-section blind uphill

Abstract

The utility model discloses a high-section blind uphill one-time blasting well-forming blast hole arrangement structure, and belongs to the technical field of mine laneway engineering blasting. A high-section blind uphill one-time blasting well-forming blast hole arrangement structure comprises a well-forming plane, no less than two charging holes are formed in the middle of the well-forming plane, a plurality of empty holes are evenly formed in the outer sides of the multiple charging holes, a plurality of first peripheral holes are evenly formed in the outer sides of the multiple empty holes, and a plurality of second peripheral holes are evenly formed in the outer sides of the multiple first peripheral holes. A plurality of second peripheral holes and empty holes are evenly formed in the outer sides of the first peripheral holes, the first peripheral holes and the second peripheral holes are all located in the well completion plane, the diameter of the empty holes is larger than that of the charging holes, and the first peripheral holes, the second peripheral holes, the charging holes, the first peripheral holes and the second peripheral holes are all filled with blasting materials. The number of the charging holes and the empty holes is increased, and the well completion plane is arranged in the middle of the mine roadway, so that sufficient compensation space can be provided during well completion blasting, blasting shock waves fully escape, and the height and success rate of one-time blasting well completion are increased.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of mine shaft engineering blasting, and more particularly to a high-segment blind upraise one-time blasting well-forming blast hole arrangement structure. BACKGROUND

[0002] In the prior art, one-time well-forming technology has realized one-time blasting below a height of 10 meters, and still needs segmented and periodic blasting above the height of 10 meters, which requires that well-forming blasting can be implemented only after the upper horizontal development engineering is in place. However, the cutting upraise tunneling engineering is easily affected by geological structures and the like, and the construction period may be delayed, which affects normal production connection at this time. In order to make the deep hole mine room have the ore drawing condition according to the plan, it is necessary to research and develop a one-time well-forming method for cutting the upraise under the condition of no upraise and one-time blasting.

[0003] Through retrieval, the patent document with the existing publication number CN113720226A provides a small-section upward blind well one-time blasting well-forming blast hole arrangement structure and method. The method sets a center charge cutting hole in the blasting cutting area and a plurality of empty holes arranged around the center charge cutting hole. A first-order auxiliary hole and a second-order auxiliary hole in the form of a square are arranged around the blasting cutting area. Each hole has the center charge cutting hole as the center, and the diameter of the empty hole is greater than that of the other holes. Except that the empty hole is not charged with explosives, the remaining blast holes are all charged with explosives, which is used to realize one-time blasting well forming.

[0004] In the above scheme, only one center charge cutting hole is provided, which affects the success rate of one-time blasting well forming. It is necessary to properly adjust the technical parameters of the cutting hole to increase the success rate of one-time blasting well forming. In view of this, the present application provides a high-segment blind upraise one-time blasting well-forming blast hole arrangement structure. CONTENT OF THE UTILITY MODEL

[0005] 1. Technical problem to be solved

[0006] The purpose of the present application is to provide a high-segment blind upraise one-time blasting well-forming blast hole arrangement structure to solve the problems raised in the background technology.

[0007] 2. Technical solution

[0008] The present application is realized by the following technical solution:

[0009] The utility model provides a kind of high segment blind up hill one-time blasting well hole arrangement structure, including well plane, the middle part of the well plane is equipped with charging hole, the number of the charging hole is not less than two, multiple charging hole outside is uniformly equipped with multiple empty holes, multiple empty hole outside is uniformly equipped with multiple first perimeter hole, multiple first perimeter hole outside is uniformly equipped with multiple second perimeter hole, the empty hole, first perimeter hole, second perimeter hole are located in well plane, the diameter of the empty hole is greater than charging hole, first perimeter hole and second perimeter hole, charging hole, first perimeter hole, second perimeter hole are filled with blasting material.

[0010] As an optional scheme of the technical scheme of the present application file, the number of charging holes is two, and the diameter of the charging hole is 100 mm.

[0011] As an optional scheme of the technical scheme of the present application file, the number of empty holes is eight, and the eight empty holes are arranged in a ring shape, the spacing between adjacent two empty holes is the same, and the diameter of the empty hole is 150 mm.

[0012] As an optional scheme of the technical scheme of the present application file, the number of first perimeter holes is four, and the four first perimeter holes are arranged in a square shape, and the diameter of the first perimeter hole is 100 mm.

[0013] As an optional scheme of the technical scheme of the present application file, the number of second perimeter holes is four, and the four second perimeter holes are arranged in a square shape, and the diameter of the second perimeter hole is 100 mm.

[0014] As an optional scheme of the technical scheme of the present application file, the depth of the charging hole, the empty hole, the first perimeter hole and the second perimeter hole is 15.5 m.

[0015] As an optional scheme of the technical scheme of the present application file, the well plane is located above the middle part of the mine tunnel.

[0016] As an optional scheme of the technical scheme of the present application file, the blasting material in the charging hole is first detonated, the blasting material in the first perimeter hole is detonated in diagonal order after the detonation of the blasting material in the charging hole, and the blasting material in the second perimeter hole is detonated in diagonal order after the detonation of the blasting material in the first perimeter hole.

[0017] As an optional scheme of the technical scheme of the present application file, the size of the well plane is 1.5 m*1.5 m.

[0018] As an optional scheme of the technical scheme of the present application file, four blasting materials are installed in the charging hole, the first perimeter hole and the second perimeter hole, and the installation interval between the four blasting materials from bottom to top is 4.5 m, 3 m and 3 m.

[0019] 3. Advantages

[0020] Compared with the prior art, the advantages of the present application are:

[0021] The present application can provide sufficient compensation space for well-forming blasting by increasing the number of charging holes and empty holes and arranging the well-forming plane in the middle of the mine roadway, so that the blasting shock wave fully escapes, avoids the damage of the shock wave recoil to the subsequent blasting effect, and increases the height and success rate of one-time blasting well-forming. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of a high-section blind up-hill one-time blasting well-forming blast hole arrangement structure.

[0023] In the figure: 1, well-forming plane; 2, charging hole; 3, empty hole; 4, first peripheral hole; 5, second peripheral hole. DETAILED DESCRIPTION

[0024] The technical solutions of the present application will be described clearly and completely in combination with the drawings.

[0025] Please refer to Figure 1 , the present application provides a technical solution:

[0026] A high-section blind up-hill one-time blasting well-forming blast hole arrangement structure, comprising a well-forming plane 1, the size of the well-forming plane 1 is not less than 1.5m*1.5m, the well-forming plane 1 is located above the middle of the mine roadway, providing sufficient compensation space for well-forming blasting, this compensation space is similar to the free surface of the tunneling roadway, whether it can provide enough compensation space for well-forming blasting determines the success or failure of well-forming blasting, at the same time, it can make the blasting shock wave fully escape and avoid the damage of the shock wave recoil to the subsequent blasting effect; the recoil effect of the shock wave is very strong, which can cause hole extrusion when it is slight, and can make the subsequent blasting stop and cause blasting failure when it is serious, which brings great difficulty to the subsequent work.

[0027] A charging hole 2 is arranged in the middle of the well-forming plane 1, the number of the charging hole 2 is not less than two, a plurality of empty holes 3 are uniformly arranged outside the plurality of charging holes 2, a plurality of first peripheral holes 4 are uniformly arranged outside the plurality of empty holes 3, a plurality of second peripheral holes 5 are uniformly arranged outside the plurality of first peripheral holes 4, the empty holes 3, the first peripheral holes 4 and the second peripheral holes 5 are all located in the well-forming plane 1, the diameter of the empty holes 3 is greater than that of the charging holes 2, the first peripheral holes 4 and the second peripheral holes 5, and the charging holes 2, the first peripheral holes 4 and the second peripheral holes 5 are all filled with blasting materials.

[0028] Preferably, the number of charging holes 2 is two, and the diameter of the charging hole 2 is 100 mm, which can effectively increase the volume of the charging hole 2. According to the existing construction conditions, as long as the success rate of the charging hole 2 blasting is ensured, the theoretical blasting height can reach 20 meters. The number of the empty holes 3 is eight, the eight empty holes 3 are arranged in a ring shape, the spacing between the adjacent two empty holes 3 is the same, and the diameter of the empty hole 3 is 150 mm. By increasing the number of empty holes 3 and expanding the volume of the initial free surface of the well blasting, the hole squeezing phenomenon is avoided, and the success rate of the well blasting is increased.

[0029] Preferably, the number of the first peripheral hole 4 is four, the four first peripheral holes 4 are arranged in a square shape, the diameter of the first peripheral hole 4 is 100 mm, the number of the second peripheral hole 5 is four, the four second peripheral holes 5 are arranged in a square shape, the diameter of the second peripheral hole 5 is 100 mm, and the depth of the charging hole 2, the empty hole 3, the first peripheral hole 4 and the second peripheral hole 5 is 15.5 m. Four blasting materials are installed in the charging hole 2, the first peripheral hole 4 and the second peripheral hole 5, and the installation interval between the four blasting materials from bottom to top is 4.5 m, 3 m and 3 m.

[0030] During blasting, the blasting material in the charging hole 2 is first detonated, the blasting material in the first peripheral hole 4 is detonated in diagonal order after the blasting material in the charging hole 2 is detonated, and the blasting material in the second peripheral hole 5 is detonated in diagonal order after the blasting material in the first peripheral hole 4 is detonated.

[0031] The blasting material can use detonator. After the charging is completed, the detonator foot line is buckled on the lead wire, and the blasting can be detonated after the detonator is confirmed to be normal by the initiator. In order to ensure the blasting and debris falling time and the shock wave discharge time, the inter-hole blasting delay is 80 ms, and the intra-hole blasting delay is 50 ms. In order to ensure the blasting and debris falling time and the shock wave discharge time.

[0032] According to this way of detonation, one blasting can achieve a well effect of 14 m. According to the ordinary well method, four times of blasting are needed, and personnel do not need to work under the empty area, which is safer. The economic benefit is also very significant. After using this method, the upper mining and preparation engineering can be effectively reduced. After calculation, after cutting according to this method, 25 meters of roadway excavation engineering can be saved for each deep hole mine room.

Claims

1. A high segmental blind uphole one-shot blasting wellhole arrangement, characterized by: The application relates to a well forming plane (1) which is provided with a plurality of charging holes (2) in the middle, the number of the charging holes (2) is not less than two, a plurality of air holes (3) are uniformly arranged outside the charging holes (2), a plurality of first peripheral holes (4) are uniformly arranged outside the air holes (3), a plurality of second peripheral holes (5) are uniformly arranged outside the first peripheral holes (4), the air holes (3), the first peripheral holes (4) and the second peripheral holes (5) are located in the well forming plane (1), the diameter of the air holes (3) is larger than that of the charging holes (2), the first peripheral holes (4) and the second peripheral holes (5), and the charging holes (2), the first peripheral holes (4) and the second peripheral holes (5) are filled with blasting materials.

2. The high subblind uphole one blast hole formation arrangement structure according to claim 1, characterized in that: The number of the charging holes (2) is two, and the diameter of the charging holes (2) is 100 mm.

3. The high subblind uphole one blast hole formation arrangement structure according to claim 1, characterized in that: The number of the air holes (3) is eight, the eight air holes (3) are arranged in a ring shape, the spacing between two adjacent air holes (3) is the same, and the diameter of the air holes (3) is 150 mm.

4. The high subblind uphole one blast raise hole arrangement of claim 1, wherein: The number of the first peripheral holes (4) is four, the four first peripheral holes (4) are arranged in a square shape, and the diameter of the first peripheral holes (4) is 100 mm.

5. The high subblind uphole one blast raise hole configuration of claim 1, wherein: The number of the second peripheral holes (5) is four, the four second peripheral holes (5) are arranged in a square shape, and the diameter of the second peripheral holes (5) is 100 mm.

6. The high subblind uphole one blast raise hole configuration of claim 1, wherein: The depth of the charging holes (2), the air holes (3), the first peripheral holes (4) and the second peripheral holes (5) is 15.5 m.

7. The high subblind uphole one blast raise hole arrangement of claim 1, wherein: The well forming plane (1) is located above the middle of a mine roadway.

8. The high subblind uphole one blast raise hole arrangement of claim 1, wherein: The size of the well forming plane (1) is 1.5 m*1.5 m.

9. The high subblind uphole one blast raise hole arrangement of claim 1, wherein: Four blasting materials are arranged in the charging holes (2), the first peripheral holes (4) and the second peripheral holes (5), and the installation intervals of the four blasting materials from bottom to top are 4.5 m, 3 m and 3 m.

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