阅读说明：本技术 一种单孔双塞段式***方法 (Single-hole double-plug section type blasting method ) 是由 李琪 惠勇 王建忠 刘超 董学臣 李增鱼 马生伟 李凯福 郭兴忠 韩晓霞 于 2019-09-17 设计创作，主要内容包括：本发明公开了一种单孔双塞段式爆破方法,该方法整体采用深孔梯段爆工艺,设计预留马道分台阶进行爆破,边坡采用预裂爆破技术；单孔双塞段式爆破过程中首先平整钻机作业场地,对作业面进行布孔和钻孔；钻孔完成后进行清孔,清孔完成后将炮孔分为上段孔道、下段孔道,在下段孔道内的上、中、下的位置装入乳化炸药,然后填塞1m-2m的隔离段,在上段孔道内的上、中、下的位置装入乳化炸药,在炮孔的孔口处填塞2m的密封段；最终形成单孔双塞段式结构,实施爆破作业；两段空间炸药同时起爆相互作用,爆破破效果好,能有效避免大块石的出现,并能很大程度上减少能源消耗,降低人工、设备成本投入,节能减排及环保效益高明显。(The invention discloses a single-hole double-plug section type blasting method, which integrally adopts a deep-hole bench blasting process, a reserved pavement is designed to perform blasting in steps, and a presplitting blasting technology is adopted for a side slope; in the single-hole double-plug section type blasting process, firstly, a drilling machine operation field is leveled, and holes are distributed and drilled on an operation surface; cleaning the blast hole after drilling, dividing the blast hole into an upper section of hole channel and a lower section of hole channel after cleaning, filling emulsion explosives at the upper, middle and lower positions in the lower section of hole channel, then filling an isolation section of 1m-2m, filling emulsion explosives at the upper, middle and lower positions in the upper section of hole channel, and filling a sealing section of 2m at the orifice of the blast hole; finally forming a single-hole double-plug section type structure, and implementing blasting operation; the two sections of space explosives are simultaneously detonated and interacted, the blasting effect is good, large stones can be effectively avoided, the energy consumption can be reduced to a great extent, the investment of labor and equipment cost is reduced, and the energy-saving emission-reducing and environment-friendly benefits are high and obvious.)

1. A single-hole double-plug section type blasting method integrally adopts a deep-hole bench blasting process, a reserved pavement is designed to perform blasting in steps, and a presplitting blasting technology is adopted for a side slope; the method is characterized in that: in the single-hole double-plug section type blasting process, firstly, a drilling machine operation field is leveled, and holes are distributed and drilled on an operation surface; cleaning the blast hole after drilling, dividing the blast hole into an upper section of hole channel and a lower section of hole channel after cleaning, filling emulsion explosives in the upper, middle and lower positions in the lower section of hole channel, then filling an isolation section of 1-2m by mixing sand and clay, filling the emulsion explosives in the upper, middle and lower positions in the upper section of hole channel, and filling a sealing section of 2m by mixing sand and clay at the orifice of the blast hole; finally, a single-hole double-plug section type structure is formed, and blasting operation is implemented.

2. A method of single hole double plug burst according to claim 1 wherein: in the single-hole double-plug section type blasting method, the depth of a blast hole is 10m, the length of an upper section pore canal is 3-4m, and the length of a lower section pore canal is 3-4 m; the aperture is 100-200 mm.

3. A method of single hole double plug burst according to claim 1 wherein: in the single-hole double-plug section type blasting method, according to the positions of an emulsion explosive and an isolation section in a blast hole, the emulsion explosive and simple isolation plugs are fixed on a branch pipe in advance, and then the emulsion explosive and the isolation section are placed into the blast hole together; the explosive lead wire penetrates out of the branch pipe.

4. A method of single hole double plug burst according to claim 2 wherein: in the single-hole double-plug section type blasting method, when filling isolation sections, the filling isolation sections of adjacent blast holes are staggered.

5. A method of single hole double plug burst according to claim 4 wherein: and the emulsion explosives in the upper section of pore channel and the lower section of pore channel are detonated simultaneously.

Technical Field

The invention relates to the technical field of blasting, in particular to a single-hole double-plug section type blasting method.

Background

When an earth-rock dam or a rock-fill dam is built, a large amount of stones are needed, blasting is usually carried out on nearby mountains to take stones, the relationship among the aperture ratio, the spacing ratio, the hole depth ratio and the blocking length ratio needs to be adjusted scientifically and reasonably in the blasting test process, the opening error, the drilling error and the like are strictly controlled, and some blasting parameters are controlled and adjusted in the range of the optimal numerical value through the exploitation of the stones and the blasting test result so as to obtain a relatively ideal effect. The traditional method is an excavation technology which uses bench blasting to cause the excavation surface to be stepped and carries out stone excavation line production by one or more rows of deep hole blasting, the bench blasting adopts deep hole bench subsection blasting, the drilling diameter and the hole distance of the blasting mode are not too large, and meanwhile, certain requirements are required for the hole depth, otherwise, the blasting is incomplete, so that the quarrying quantity after each blasting is less, the granularity of the stone is larger, and most stones need to be used by a secondary processing party.

Disclosure of Invention

The single-hole double-plug section type blasting method adopts a single-hole double-plug section type structure to form two sections of blasting spaces in one blast hole to carry out blasting, and the blasting method carries out blasting and quarrying operation, so that the problems that the quarrying amount is small, the stone granularity is large and most stones need secondary processing to be used after each blasting in the traditional blasting method are solved.

In order to realize the purpose of the invention, the invention adopts the following technical scheme:

a single-hole double-plug section type blasting method integrally adopts a deep-hole bench blasting process, a reserved pavement is designed to perform blasting in steps, and a presplitting blasting technology is adopted for a side slope; in the single-hole double-plug section type blasting process, firstly, a drilling machine operation field is leveled, and holes are distributed and drilled on an operation surface; cleaning the blast hole after drilling, dividing the blast hole into an upper section of hole channel and a lower section of hole channel after cleaning, filling emulsion explosives in the upper, middle and lower positions in the lower section of hole channel, then filling an isolation section of 1-2m by mixing sand and clay, filling the emulsion explosives in the upper, middle and lower positions in the upper section of hole channel, and filling a sealing section of 2m by mixing sand and clay at the orifice of the blast hole; finally, a single-hole double-plug section type structure is formed, and blasting operation is implemented.

Preferably, in the single-hole double-plug section type blasting method, the depth of a blast hole is 10m, the length of an upper section pore canal is 3-4m, and the length of a lower section pore canal is 3-4 m; the aperture is 100-200 mm.

Preferably, in the single-hole double-plug section type blasting method, according to the positions of the emulsion explosive and the isolation section in the blast hole, the emulsion explosive and the simple isolation plug are fixed on the branch pipe in advance by using the branch pipe, and then the emulsion explosive and the isolation plug are placed into the blast hole together, so that the positions of the emulsion explosive and the isolation plug are more accurate; the explosive lead wire penetrates out of the branch pipe.

Preferably, in a single-hole double-plug-segment blasting method, when the isolation segment is plugged, the positions of the plugged isolation segments of adjacent blast holes are staggered.

Preferably, the emulsion explosives in the upper section of pore channel and the lower section of pore channel need to be detonated simultaneously.

Compared with the prior art, the invention has the following beneficial effects:

the depth of the blast hole is larger than the value adopted by common deep hole bench blasting, the blasting efficiency is higher, and the quantity of stones obtained after blasting is large; the positions of the filling isolation sections of the adjacent blast holes are staggered, so that the blasted stone is more uniform and the blast holes are isolated in sections, and two sections of space explosives are simultaneously detonated and interacted, so that the blasting effect is good, large stones can be effectively avoided, the secondary processing cost of the stone is reduced, the energy consumption can be reduced to a great extent, the investment of labor and equipment cost is reduced, and the energy-saving, emission-reducing and environment-friendly benefits are high and obvious; the method is a field to be developed in the blasting technology, and the development and the perfection of the blasting technology can bring great economic benefits and social benefits.

Drawings

FIG. 1 is a schematic diagram of a single-hole double-plug segment type structure of a single-hole double-plug segment type blasting method according to the present invention;

FIG. 2 is a schematic diagram of the distribution of blastholes with different isolation section positions in a single-hole double-plug section blasting method according to the invention;

in the figure: blast hole-1, isolation section-2, upper section pore canal-3, lower section pore canal-4, emulsion explosive-5, sealing section 6 and branch pipe-7.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described as follows: