阅读说明：本技术 一种无切割天井拉槽法在爆破采场中的应用 (Application of non-cutting raise grooving method in blasting stope ) 是由 周正保 高银龙 王�义 魏爱国 于 2020-04-21 设计创作，主要内容包括：本发明公开了一种无切割天井拉槽法在爆破采场中的应用,施工前在采场内布置三徘深孔,大孔之间采用大并联方式进行联接形成联合起爆网,起爆网路敷设顺序由最里边的孔开始,依次向导爆索主干线方向敷设,起爆顺序为起爆器→400米非电导爆管→引爆主导爆索→起爆各孔非电工业雷管→起爆深孔导爆索→起爆孔中乳化炸药,实现深孔爆破。采用本技术方案,其结构简单,设计合理,使用方便,简化操作程序,提高使用安全的新型爆破回采工艺。(The invention discloses an application of a non-cutting raise grooving method in a blasting stope, wherein three-stroking deep holes are distributed in the stope before construction, large holes are connected in a large parallel mode to form a combined detonating network, the detonating network is laid from the innermost hole in sequence to the main trunk line direction of a detonating cord, and the detonating sequence is a detonator → 400 m non-electric detonating tubes → detonating main detonating cords → detonating non-electric industry detonators in all holes → detonating deep hole detonating cords → emulsified explosives in detonating holes, so that deep hole blasting is realized. By adopting the technical scheme, the novel blasting stoping process has the advantages of simple structure, reasonable design, convenience in use, simplified operation procedures and improved use safety.)

1. The application of non-cutting raise slotting method in blasting stope is characterized by that before construction three rows of deep holes are distributed in the stope, every row of holes are respectively equipped with three parallel large holes, and between adjacent large holes two large holes are added, and the charging structure of every large hole is that after the hole depth is confirmed at bottom, the hole-plugging plug made of iron wire and cement is used for hanging hole, in order to make the impact wave of explosive act on rock, the upper portion of the hole-plugging plug is used for filling sand, and the emulsified explosive is started to be filled on the lower filling sand, and after the charging is finished, the lower filling sand is used for covering, and the interior of large hole is equipped with coupled spaced charging, and the coupled spaced charging is connected with blasting cables, and the top end of large hole is equipped with bamboo tube, and the blasting cable joint end set on the bamboo tube is connected with external non-electric detonator by iron wire, and the large holes are connected in parallel mode to form combined blasting net, the laying sequence of the detonating network is from the innermost hole to the main trunk line of the detonating cord, and the detonating sequence is that the detonator → 400 m non-electric conductive blasting tube → detonating main detonating cord → detonating non-electric industry detonator of each hole → detonating deep hole detonating cord → emulsified explosive in the detonating hole, thus realizing deep hole blasting.

2. The use of the non-cutting raise grooving method in a blasting stope according to claim 1, wherein the hole diameter of the large holes is 165mm, the row spacing between three rows of deep holes is 3.0-1.0 m, and the spacing between adjacent large holes in each row is 3.0-1.0 m.

3. Use of a non-cutting raise grooving method in a blasting stope according to claim 1, wherein the emulsion explosives in the coupled spaced charges are loaded as a layer per 27 kg.

Technical Field

The invention relates to the technical field of mining engineering, in particular to application of a non-cutting raise grooving method in a blasting stope.

Background

In the mine production of China, stope cutting work is one of the most critical stoping process links of underground mining of ore deposit, and no matter which mining method is adopted, cutting engineering work is required before formal stoping. The cutting project is a tunneling project for providing a compensation space for the initial stope face and ore caving. The completion of the cutting work marks the end of the mining work and the beginning of the stoping work, and has the key functions of starting and stopping. Whether the cutting project can be constructed according to the design requirements and how the quality of the cutting groove is, whether the mining can be normally carried out and the effect of the recovery is good or bad. If the height of the cutting slot does not meet the design requirement, stoping blasting is not easy to be communicated with overlying rocks at the upper part to generate a suspended roof, a small empty field is formed, not only can the collapsed ores not be completely discharged, but also the later discharge stoping is influenced, and serious accidents can be caused when the suspended roof falls suddenly. Therefore, the quality of the cutting slot has a great influence on the blasting ore breaking effect.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention discloses an application of a non-cutting raise grooving method in a blasting stope, which is convenient to use, simplifies the operation procedure and improves the blasting recovery process with safe use.

The invention discloses an application of a non-cutting raise slotting method in a blasting stope, wherein three rows of deep holes are distributed in the stope before construction, each row of holes are respectively provided with three parallel large holes, two large holes are added between every two adjacent large holes at intervals, the charging structure of each large hole is that after the hole depth is confirmed at the bottom, a hole plugging plug made of iron wire and cement is used for hoisting the hole, in order to enable the shock wave of explosive to act on rock, lower filling sand is carried out above the hole plugging plug, emulsion explosive is filled on the lower filling sand, after the charging is finished, the lower filling sand is used for covering, coupled spaced charging is adopted in the large holes, the coupled spaced charging is sequentially connected with blasting cables, a bamboo tube is arranged at the top end of the large hole in a plugging manner, the joint end of the blasting cable arranged on the bamboo tube is connected with an external non-electric industry detonator through the iron wire, the large parallel connection is adopted between the large holes to form a combined blasting net, the laying sequence of the detonating network is from the innermost hole to the main trunk line of the detonating cord, and the detonating sequence is that the detonator → 400 m non-electric conductive blasting tube → detonating main detonating cord → detonating non-electric industry detonator of each hole → detonating deep hole detonating cord → emulsified explosive in the detonating hole, thus realizing deep hole blasting.

Furthermore, the diameter of the large holes is 165mm, the row spacing between three rows of deep holes is 3.0-1.0 m, and the spacing between adjacent large holes in each row is 3.0-1.0 m.

Further, the emulsion explosive in the coupled spaced charges is filled as a layer per 27 kg.

The beneficial effects are that: the novel blasting and recovery process has the advantages that the original manually constructed cutting raise is changed into the large-hole blasting and well forming, the cutting raise is not required to be constructed by people, a large-hole drilling machine is used for drilling rock, and blasting and well forming are carried out by explosive at the later stage, so that the construction time is shortened, the safety guarantee is increased, the structure is simple, the design is reasonable, the use is convenient, the operation procedure is simplified, and the use safety is improved.

Drawings

FIG. 1 is a schematic diagram of a large hole charge configuration for use in a blasting stope in accordance with a non-cutting raise channeling method of the present invention;

FIG. 2 is a schematic diagram of a blast-to-well for use in a blast stope in accordance with the present invention;

fig. 3 is a schematic diagram of the laying of a detonation network for the application of the non-cutting raise grooving method in a blasting stope.

Wherein: 1-non-electric industry detonators; 2-detonating cord; 3-iron wire; 4-bamboo tube; 5-emulsion explosive; 6-filling sand; 7-plugging the hole plug.

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.

As shown in figures 1-3, the invention discloses an application of a non-cutting raise slotting method in a blasting stope, wherein three rows of deep holes are distributed in the stope before construction, each row of holes is respectively provided with three parallel large holes, two large holes are added between adjacent large holes at intervals, the charging structure of each large hole is that after the hole depth is confirmed at the bottom, a hole plugging plug made of iron wire and cement is used for hoisting the hole, in order to enable the impact wave of explosive to act on rock, lower filling sand is carried out above the hole plugging plug, emulsion explosive is filled on the lower filling sand, after the charging is finished, the lower filling sand is used for covering, coupled spaced charging is adopted in the large holes, the coupled spaced charging is sequentially connected with detonating cords, a bamboo tube is arranged at the top end of the large holes, the connector end of the detonating cord arranged on the bamboo tube is connected with external non-electric industry detonators through iron wires, and the large parallel connection is adopted between the large holes to form a combined detonating net, the laying sequence of the detonating network is from the innermost hole to the main trunk line of the detonating cord, and the detonating sequence is that the detonator → 400 m non-electric conductive blasting tube → detonating main detonating cord → detonating non-electric industry detonator of each hole → detonating deep hole detonating cord → emulsified explosive in the detonating hole, thus realizing deep hole blasting.

Furthermore, the diameter of the large holes is 165mm, the row spacing between three rows of deep holes is 3.0-1.0 m, and the spacing between adjacent large holes in each row is 3.0-1.0 m.

Further, the emulsion explosive in the coupled spaced charges is filled as a layer per 27 kg.

When the cutting groove blasting. And (3) hoisting the hole again during each blasting, and then plugging the explosive by using sand after the explosive is loaded, so that the detonation of the explosive can act in the rock stratum to the maximum extent, and the blasting can achieve the best effect.

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.