A combined adjustable linear energy-concentrating charge device and its blasting method

Abstract

The invention discloses a combined adjustable linear shaped charge device. The combined adjustable linear shaped charge device comprises a linear tube groove and shaped charge liners. The linear tube groove is a combined adjustable liner tube groove and comprises at least one cartridge bag tube groove set comprising two cartridge bag tube grooves, and the two cartridge bag tube grooves or the at least two cartridge bag tube groove sets are connected through a chaining tube with the shaped direction angle to form the adjustable double-pole or multiple-pole liner tube groove; each cartridge bag tube groove is internally provided with a containing space containing explosive, wherein a reserved half hole used for placing an initiating and detonating cord is formed in the inner end of each cartridge bag tube groove, one shaped charge liner is arranged at the outer end opposite to the reserved half hole and is connected with the cartridge bag tube groove in a clamped mode. The linear tube groove in the combined adjustable linear shaped charge device is a general tube groove and can be matched with different shaped charge liners, different chaining pipes and different positioning devices; the combined adjustable linear shaped charge device is high in generality, convenient to operate, wide in application range and good in explosion effect, the shaped direction angle is adjustable, the overexcavation amount is small, side slopes are flat, and boundary profile curves are smooth.

Description

Technical field [0001] The invention relates to the technical field of medical infusion, in particular to a combined adjustable linear energy-accumulating charge device and a blasting method thereof. Background technique [0002] For the controlled blasting of roadbeds, tunnels, shafts, bored piles, and channel slopes in traffic and water conservancy projects, the traditional blasting technology used is pre-splitting (smooth) blasting. Its technical characteristics are densely drilled holes in the slopes. Uncoupling the charge, then block the blast hole, all blasts, the use of explosive blasting to produce stress wave and blasting gas stress to cause the adjacent blast hole medium (such as rock) to pull apart, high-pressure gas into the split, forming a flat slope. The charging process of this method is rough. Generally, bamboo pieces are used to bind the explosives at intervals. The detonating cord is thick. At the same time, there are the following shortcomings: 1. The half por...

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Problems solved by technology

The charging process of this method is rough, and bamboo chips are generally used to bind the explosives at intervals, and the detonating cord detonation process is rough. At the same time, there are the following disadvantages: 1. The semi-porosity is generally 30%-90%, and the slope flatness is not high. , fluctuating within plus or minus 150mm; 2. The hole distance is generally 8 to 12 times the diameter of the gun, and the drilling volume is large and the efficiency is low; 3. Due to the intensive drilling method, the amount of explosives is large and the project cost is high; 4. . Due to the large amount of simultaneous blasting charge and the large vibration of the pre-splitting blasting, the vibration of the pre-splitting blasting, which was originally used to reduce vibration, has a great impact on the contrary.

However, it also has the following deficiencies: 1. Since the bipolar linear shaped charge tube groove is an integral structure, the angle of the shaped charge drug cover cannot be adjusted, and the drug cover of different angles and materials cannot be replaced. It is very inconvenient for the parameters of the preliminary test blasting test; 2. The bipolar linear shaped charge, especially the detonation hole reserved in the center of the hole, requires special equipment for charge operation, and on-site processing cannot guarantee the precise position of the detonating cord in the hole. Affect the blasting effect; 3. The existing bipolar linear energy-gathering charge, the energy-gathering direction is a straight line, that is, the angle between the two energy-gathering directions is 180 degrees, and the effect is good when used on a straight line contour. The angle of the energy-gathering direction cannot be adjusted. To adjust the direction, the pipe groove mold needs to be remade, which makes the pipe groove not universal, not only high in cost, but also complicated in operation; 4. Pre-split (smooth) blasting on the tunnel vault curve or inverted arch curve , the two-stage energy-gathering direction is still 180 degrees. At this time, the linear overbreak X1=R(1 / cosα / 2-1) at the intersection point of the two-hole energy-gathering cutting line after the curved slope blasting, the overbreak Large, and the slope surface is not smooth, and the slope curve is not smooth

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