PL17014B3 - A method of preventing coal dust and gas explosions during the bursting of coal with explosives, and a cartridge for carrying out the method. - Google Patents

A method of preventing coal dust and gas explosions during the bursting of coal with explosives, and a cartridge for carrying out the method. Download PDF

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Publication number
PL17014B3
PL17014B3 PL17014A PL1701432A PL17014B3 PL 17014 B3 PL17014 B3 PL 17014B3 PL 17014 A PL17014 A PL 17014A PL 1701432 A PL1701432 A PL 1701432A PL 17014 B3 PL17014 B3 PL 17014B3
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PL
Poland
Prior art keywords
coal
explosives
bursting
cartridge
carrying
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Application number
PL17014A
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Polish (pl)
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Publication date
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Publication of PL17014B3 publication Critical patent/PL17014B3/en

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Najdluzszy czas trwania patentu do 20 stycznia 1947 r.W patencie Nir 15442 opasany zostal spo sób zapobiegania wybuchom pylu weglowe¬ go i gazów podczas rozsadzania wegla ma¬ terjalami wybuchowemi, wedlug którego jajko srodek, obnizajacy temperature wne¬ trza komory strzalowej,, stosuje sie lód.Wynalazek niniejszy polega na zastoso¬ waniu zamiast lodu wody db zapobiegania wybuchom pylu weglowego i gazów, zwla¬ szcza gdy szybkosc detonacji ladunku wy¬ buchowego zostaje zmniejszona. Oczywi¬ scie mozna stosowac równoczesnie tez i lód, jak opisano w paitencfe Ntr 15442, przy jed- noczesnem, jak wyzej poda/no, zmniejszeniu szybkosci detonacji.Sposób wedlug wynalazku niniejszego daje te korzysc, ze bez obawy wybuchu py¬ lu weglowego lub gazów, mozna stosowac wieksze ladunki, zmniejszenie szybkosci detonacji bowiem wplywa na obnizenie tem¬ peratury spalania materjalu wybuchowego, która jeszcze obniza para wodna, utworzo¬ na w czasie wybuchu z wody czy z lodu.Mozliwosc kilkakrotnego powiekszenia ilo¬ sci ladunków wybuchowych, przy calkowi- tem bezpieczenstwie od wybuchu pylu we¬ glowego i gazów, osiaga sie przedzielajac ladunki wkladkami z lodu lub wody,, przy- czem kazdy ladunek wybuchowy zaopatrzo¬ ny jest w osobny zapalnik.Wykonanie wynalazku polega na tern, ze w otworze wybuchowym obok ladunków zeskroplonemi gazami lub materjalami wybu- chowemi, z dbmieszka substancyj zimniej- slfajacycli szybkosc detonacji, umieszcza sie lód lub wode w szczelnie zamknietych nie¬ przemakalnych gilzach, palnych lub niepal¬ nych. PL PLThe longest patent period is until January 20, 1947. Patent No. 15442 covers a method of preventing coal dust and gas explosions during the blasting of coal with explosives, in which ice is used as a means of lowering the temperature inside the firing chamber. The present invention consists in using water instead of ice to prevent coal dust and gas explosions, especially when the detonation speed of the explosive charge is reduced. Of course, ice can also be used simultaneously, as described in paitencfe Ntr 15442, while, as mentioned above, reducing the detonation rate. The method according to the present invention offers the advantage that larger charges can be used without fear of explosion of coal dust or gases, because the reduction of the detonation rate affects the lowering of the combustion temperature of the explosive material, which is further lowered by the water vapor created during the explosion from water or ice. The possibility of several times increasing the number of explosive charges, with complete safety against explosion of coal dust and gases, is achieved by separating the charges with inserts of ice or water, each explosive charge being provided with a separate The invention is implemented by placing ice or water in tightly closed, waterproof flammable or non-flammable shells in the blasting hole, next to the charges containing liquefied gases or explosive materials, with a mixture of colder substances that reduce the detonation rate.

PL17014A 1932-02-23 A method of preventing coal dust and gas explosions during the bursting of coal with explosives, and a cartridge for carrying out the method. PL17014B3 (en)

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PL17014B3 true PL17014B3 (en) 1932-10-31

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