Prakticke uplatneni konvektivne difuzniho modelu pro reseni vystupu metanu na uzemich s ukoncenou hornickou cinnosti

摘要

The paper deals with the possibility to solve the regularity of escaping of gas from underground areas in the dosed mines. The theory of convective diffusion exploited is for these reasons. Some theoretical procedures introduced are at firs and the results of these procedures given are in the form of graph. Then after the findings of measurement in-situ the comparison among the theoretical presumption and practical results of measurement reviewed is the validity of theory. We can say that the theory of convective diffusion applied is to praxis. Po ukonceni hornicke cinnosti na mnoha dolech doslo v rade pripadu k neocekavanym vystupum plynu, zejmena metanu, z podzemi na povrch. Zvlaste citelne se tato problematika projevila v ostravske casti ostravsko-karvinskeho reviru, kde doslo k utlumu tezby jiz po roce 1990. Dalsim prikladem tohoto rizika bylo nekolik kritickych situaci v r. 2002 v Orlove, kdy se metan ze starych dulnich del hromadil v kanalizaci pod namestim a ve sklepnich prostorach polikliniky a hrozila serie vybuchu. Protoze se ocekava omezeni tezby a uzavirani dolu i v karvinske oblasti, venuje se otazce zvladnuti techto stavu rada vedeckych a vyzkumnych praci. V tomto prispevku je strucny vytah z reseni Grantoveho ukolu c. 105/04/0978. V nem je uveden postup, jak lze popsat slozite zakonitosti v ystupu plynu s vyuzitim teorie konvektivni difuze. Neni to jediny zpusob, ktery se snazi tyto jevy matematicky definovat. V nekterych jinych pracich, napriklad 17], se k tomuto ucelu vyuziva prevazne jinych teorii. Jak se predbezne jevi, jsou ruzne teoreticke pristupy k reseni zminenych zakonitosti zrejme nezbytne, protoze to vyzaduje velmi ruznorody charakter prostredi.