Allowed for use in coal mines safety cartridge bag
The invention belongs to a kind of explosive, especially belong to a kind of allowed for use in coal mines safety cartridge bag that in the mine that gas, coal dust explosion hazard are arranged, carries out dobie.The kind of existing cartridge bag comprises: 1, rigidity hard sheathed explosive.Its charge constitution is reasonable inadequately, and the outer cover packaging material is hard, breaks easily, uses singlely, can only do mediation milling coal hole explosion, and use on-the-spot powder charge.Blast back smell is big, easy to use.2, Wu Gelie nit N05, the cartridge bag of Wu Gelie nit 9-6 and Amonett 70% and 30% salt moulding.The weight of this kind cartridge bag is decided by diameter, shape and the broken condition of cartridge bag.Its shortcoming is that security performance is not high, is difficult to apply in highly gassy mine.3, the cartridge bag made of V level ion exchanged explosive, its security performance is good, but its blasting energy is low, and demolition effect is poor.Therefore be restricted actual applying in the process.4, the pittsburgh,U.S.A research center works out a kind of by being the core medicine with aqueous gels, being the cartridge bag of being formed by tube with salt and water in nineteen eighty-two.It is more safe and reliable when its advantage is to use.Its shortcoming mainly shows as: be 2 months (1) storage period only, is unsuitable for producing in enormous quantities, is restricted in promoting the use of process; (2) it is hard by tube matter, ruptures easily in production, storage, transportation, thereby form the dead angle impact effect in blasting process; (3) battering charge of its medicine core only is 680g, the heavily about 1500g of whole cartridge bag, and its power is limited when broken bulk.Above-mentioned various cartridge bag does not generally have soft attitude and plasticity blast reducer, uses very inconvenience.The present invention is a purpose with the deficiency of improving existing cartridge bag just, the Permitted Detonator for Coal Mining safety cartridge bag that design a kind of security performance height, big, the soft attitude plasticity of brisance, can carry out bursting work in the mine that gas and coal dust explosion hazard are arranged.The present invention is rational in infrastructure, easy to use, cost is low, safer in manufacturing, storage and transportation.Therefore has popularizing application prospect extensively.
Shown in the accompanying drawing, the present invention is made up of medicine core (1), colloid flame arrest layer (2), shell (3), inner casing (5) etc.Side has one or more to be used for inserting the hole (4) of detonator in upper and lower bottom.Profile of the present invention can be multiple body, but is best with the flattened cylindrical body, also can suitably regulate the weight of medicine core weight and blast reducer according to actual needs.Medicine core of the present invention (1) has cap-sensitivity, and available 6
#, 8
#The detonator direct initiation.It can be made by existing various permitted explosive for coal mine, wherein is made for best with various Permitted Detonator for Coal Mining water-based explosives.The general available can of its preparation method, casting dress or other method.Inside and outside shell of the present invention can be made with speciality paper or plastics.It has certain anti-flammability, and the end of its shell has certain flexibility and adhesivity.Can increase its security and convenience in use like this.The hole (4) of plugging in detonator among the present invention can be one or more.The position can be located at upper and lower bottom or side.The hole that is located on the upper and lower bottom is the identical hole of parallel and diameter vertically.The hole that is located at side is hole radially, corresponding, the same diameter of inside and outside shell in the same side of cartridge bag, center.The soft attitude plastic material that flame arrest layer of the present invention is made up of blast reducer, water, gelling agent, glue crosslinking agent.Wherein blast reducer accounts for 50-80%, water accounts for 20-50%, adds gelling agent 0.1-2%, glue crosslinking agent 0.0005-0.1%.Because this blast reducer has the plastic characteristics of soft attitude, so the present invention has following advantage: (1) can be because of not influenced demolition effect by the tube fracture in production, use, storage, transportation; (2) security performance is good.Its medicine core limit dosage reaches 750g, cartridge bag still can guarantee not actuation gas when weighing 2000g, and is safe and reliable when therefore using in the mine that contains gas and dust explosion danger.(3) storage period is long.Can reach six months storage period of the present invention.Therefore no matter from the properties of product aspect, still all present the characteristics that obviously are superior to other cartridge bag from the present invention of product promotion application facet.The present invention also can be used for removing loosening roof rock mass except that can fragmentation blocking up skylight and the bulk in the mine that gas, coal dust explosion hazard are arranged, and removes timbering, grillage, dobies such as mediation milling coal hole, coal.Shell (3), the inner casing (5) of embodiments of the invention (referring to accompanying drawing) for making by specialty board, by the medicine core (1) that three grades of coal-mining water gel explosives are made, form by the plastic flame arrest layer of soft attitude (2) and 1 detonator jack (4) that blast reducer, water, gelling agent, glue crosslinking agent are made.Its detonator jack (4) is in the center of the bottom of cartridge bag; The hole parallel vertically and diameter is identical.Performance requirement of the present invention is as follows: 1, the core medicine is heavy: 450g; 2, cartridge bag is heavy: 100g; 3, sensitivity to initiation: can be more than 4 ℃ the time by a 6#, 8# detonator direct initiation; 4, biogas safety energy: it is 0.8m that whole cartridge bag is suspended in diameter, and length is 15m, is full of biogas, and concentration is under 9 ± 0.3% the condition, continuously trapeze test 5 big guns and to ignite the biogas number of times be 0.Its safe class is equivalent to the security of Pyatyi ion safety explosive to biogas.
The parameters of the embodiment of the invention is as shown in the table:
| Interior thickness of the shell mm (speciality paper shell) |
Outer casing thickness mm (speciality paper shell) |
Colloid flame arrest layer external diameter (mm) |
Colloid flame arrest floor height (mm) |
The weight of colloid blast reducer (g) |
Medicine core diameter (mm) |
Medicine core height (mm) |
Medicine core weight (g) |
Detonator patchhole diameter (mm) |
| 0．5 |
2．5 |
120 |
75 |
550 |
100 |
55 |
450 |
8 |
