CN113804071A

CN113804071A - Underground mine medium-length hole blasting well forming technology

Info

Publication number: CN113804071A
Application number: CN202110947293.4A
Authority: CN
Inventors: 侯凌翔; 屠涛; 胡广超
Original assignee: Anhui Jinrisheng Mining Co Ltd
Current assignee: Anhui Jinrisheng Mining Co Ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2021-12-17

Abstract

The invention discloses a technology for forming a well by blasting medium-length holes in an underground mine, wherein the specification of the section of an operated raise is 2.0mX2.0m, the height range of the raise is 6m-11m, 1 or 2 explosive-loading holes are arranged in the center of a cutting raise through a middle-hole trolley, empty holes are arranged around the central explosive-loading hole, and peripheral explosive-loading holes are arranged on the section of the raise in a segmented manner. By adopting the technical scheme, the center explosive-loading hole of the cutting well is firstly detonated, then the peripheral explosive-loading holes at the corners of the arranged hexagonal empty holes are respectively detonated to form a free surface and a compensation space, and finally the peripheral explosive-loading holes are detonated by sections of the raise section to realize one-time explosion to form the well; the safety of the operation environment can be guaranteed, the manual operation amount can be effectively reduced, the construction cost is saved, and the method is suitable for the tunneling operation under the simple or complex conditions of blasting ore rocks.

Description

Underground mine medium-length hole blasting well forming technology

Technical Field

The invention relates to the technical field of deep hole blasting cutting, in particular to a deep hole blasting well forming technology in an underground mine.

Background

Raise boring is an important part of mine development engineering, mining engineering and cutting engineering, and is also the most difficult part in mine boring work. Therefore, the raise construction technology is always the key field of the mine innovation technology. The traditional construction methods such as a common method, a tank hanging method or a tank climbing method and the like have the advantages of high labor intensity, low efficiency, poor safety, high construction cost and poor operation environment. With the increasing level of mining mechanization, traditional construction methods are gradually replaced by drilling methods. The well drilling method has the advantages of high construction safety, high efficiency and the like, but the application prospect is limited due to high construction cost, huge construction machinery and equipment and the like. Compared with other raise construction methods, the medium-length hole blasting one-time well forming method is an effective way for cutting safe and rapid tunneling of the raise, and therefore the medium-length hole blasting well forming technology for the underground mine is designed.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention discloses a deep hole blasting well forming technology in an underground mine, which can ensure the safety of the operation environment, effectively reduce the manual operation amount and save the construction cost.

The invention discloses a technology for forming a well by blasting medium-length holes in an underground mine, wherein the specification of the section of an operated raise is 2.0mX2.0m, the height range of the raise is 6m-11m, 1 or 2 explosive-loading holes are arranged in the center of a cutting raise through a middle-hole trolley, empty holes are arranged around the central explosive-loading hole, and peripheral explosive-loading holes are arranged on the section of the raise in a segmented manner.

Preferably, when 1 loading hole is arranged at the center of the cutting courtyard through the middle hole trolley, 6 empty holes are arranged according to a hexagon around the central loading hole, the distance between the central loading hole and the empty holes is 200mm, two rows of peripheral loading holes are arranged on the section of the courtyard, the distance between the peripheral loading holes close to the inner row is 800 mm, 4 vertexes of a square are arranged, the distance between the peripheral loading holes in the outer row is 1000mm, and the four vertexes of the square are also arranged.

Preferably, when cutting patio center through the mesopore platform truck and arranging 2 loading hole, 2 center loading hole interval 200mm, arrange 6 blank holes around center loading hole, arrange 4 peripheral loading hole in the four corners position department of blank hole, adjacent blank hole interval 200mm, adjacent blank hole and center loading hole, peripheral loading hole interval is 200mm, arrange 2 peripheral loading hole on the sectional center line of patio, peripheral loading hole and blank hole interval 400mm on the center line, arrange outer peripheral loading hole on the section of patio, arrange on the peripheral loading hole of outer row along square terminal surface sideline, peripheral loading hole interval 666.7mm on one side sideline, peripheral loading hole interval 1000mm on the other side sideline.

The beneficial effects are that: firstly detonating the central explosive charging holes of the cutting well, then respectively detonating the peripheral explosive charging holes at the corners of the arranged hexagonal hollow holes to form a free surface and a compensation space, and finally, sectionally detonating the peripheral explosive charging holes at the fracture surface of the raise to realize one-time explosion to form the well; the safety of the operation environment can be guaranteed, the manual operation amount can be effectively reduced, the construction cost is saved, and the method is suitable for the tunneling operation under the simple or complex conditions of blasting ore rocks.

Drawings

FIG. 1 is a schematic diagram of a charge hole arranged in a cutting center of a deep hole blasting well forming technology in an underground mine;

FIG. 2 is a diagram of a charge hole initiation network arranged at a cutting center of the underground mine medium-length hole blasting well forming technology;

FIG. 3 is a schematic diagram of two charge holes arranged in a cutting center of the deep hole blasting well forming technology of the underground mine;

FIG. 4 is a diagram of a cutting center provided with two charge holes and an initiation network in the deep hole blasting well-forming technology of the underground mine.

Wherein: 1, a water reservoir; 2-short water absorption pipe; 3-a buoy stand; 4-a flexible hose; 5-stainless steel tube; 6-centrifugal pump body; 7-anti-blocking filter cover; 8-check valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1-2, under the condition that the operated raise is simple in blasting ore rock, the invention discloses a deep hole blasting well forming technology for underground mines, the section specification of the operated raise is 2.0mx2.0m, the height range of the raise is 6m-11m, when 1 charge hole is arranged at the center of a cutting raise through a middle hole trolley, 6 blank holes are arranged according to a hexagon around the center charge hole, the distance between the center charge hole and the blank hole is 200mm, two rows of peripheral charge holes are arranged on the raise section, the distance between the peripheral charge holes close to the inner row is 800 mm, the peripheral charge holes are arranged in 4 vertexes of a square, the distance between the peripheral charge holes on the outer row is 1000mm, and the peripheral charge holes are also arranged in 4 vertexes of the square.

Example 2

As shown in figures 3-4, under the condition that the operated raise is complex in blasting mine rock, the invention discloses a deep hole blasting well-forming technology in underground mines, the specification of the section of the operated raise is 2.0mX2.0m, the height range of the raise is 6m-11m, when 2 explosive-charging holes are arranged at the center of a cutting raise through a middle-hole trolley, the distance between the 2 central explosive-charging holes is 200mm, 6 empty holes are arranged around the central explosive-charging hole, 4 peripheral explosive-charging holes are arranged at the four corners of the empty holes, the distance between the adjacent empty holes is 200mm, the distances between the adjacent empty holes and the central explosive-charging hole and the peripheral explosive-charging holes are 200mm, 2 peripheral explosive-charging holes are arranged on the central line of the raise section, the distance between the peripheral explosive-charging holes and the empty holes on the central line is 400mm, peripheral explosive-charging holes are arranged on the raise section, outer discharge peripheral explosive-charging holes are arranged along the side line of the square end face, the distance between the peripheral medicine filling holes on one side line is 666.7mm, and the distance between the peripheral medicine filling holes on the other side line is 1000 mm.

The center explosive charging hole of the cutting well is firstly detonated, then the peripheral explosive charging holes at the corners of the arranged hexagonal hollow holes are detonated respectively to form a free surface and a compensation space, and finally the peripheral explosive charging holes are detonated by sections of the raise section, so that one-time explosion well formation is realized. By adopting the technical scheme, the safety of the operation environment can be ensured, the manual operation amount can be effectively reduced, and the construction cost is saved.

Finally, it should be noted that: the above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention; thus, while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted; all such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and protected by the following claims.

Claims

1. A technology for forming a well by medium-length hole blasting in an underground mine is characterized in that the specification of the section of the operated raise is 2.0mX2.0m, the height range of the raise is 6m-11m, 1 or 2 explosive-loading holes are arranged in the center of a cutting raise through a middle-hole trolley, empty holes are arranged around the central explosive-loading hole, and peripheral explosive-loading holes are arranged on the section of the raise in a segmented mode.

2. The deep hole blasting well forming technology in an underground mine according to claim 1, characterized in that: when arranging 1 loading hole at the cutting courtyard center through the mesopore platform truck, arrange 6 holes according to the hexagon around central loading hole, the interval between central loading hole and the hole is 200mm, arranges two rows of peripheral loading holes on the courtyard section, leans on the peripheral loading hole interval 800 mm of interior row, is 4 summits of square and arranges, and outer peripheral loading hole interval 1000mm of arranging also is 4 summits of square and arranges.

3. The deep hole blasting well forming technology in an underground mine according to claim 1, characterized in that: when arranging 2 loading holes at the center of a cutting courtyard through a middle hole trolley, 2 central loading hole intervals are 200mm, 6 empty holes are arranged around the central loading holes, 4 peripheral loading holes are arranged at the four corners of the empty holes, the adjacent empty hole intervals are 200mm, the adjacent empty holes and the central loading holes are all 200mm, 2 peripheral loading holes are arranged on the central line of the courtyard section, the peripheral loading holes and the empty hole intervals are 400mm, outer-row peripheral loading holes are arranged on the courtyard section, the outer-row peripheral loading holes are arranged on the side line of the square end face, the peripheral loading hole intervals are 666.7mm on the side line, and the peripheral loading hole intervals are 1000mm on the side line.