CS238348B1 - Water-bearing hanging wall dewatering method - Google Patents
Water-bearing hanging wall dewatering method Download PDFInfo
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- CS238348B1 CS238348B1 CS838401A CS840183A CS238348B1 CS 238348 B1 CS238348 B1 CS 238348B1 CS 838401 A CS838401 A CS 838401A CS 840183 A CS840183 A CS 840183A CS 238348 B1 CS238348 B1 CS 238348B1
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Abstract
Sposob odvodnenia zvodneného nadložia s nerovnoměrným koeficientom filtráeie v horizontálnom a vertikálnom smere využívá princip plošného podrúbania so zamerom vytvorií v nadloži a vo vrstvě úžitkového nerastu sekundárné pukliny, ktorými sa zmeni nepriaznivý koeficient fittrácie. Sekundárnými pulkinami voda odtéká až na úroveň rozhrania podložia, odkial sa odčerpává^známým sposobom banskými dielami. Umožňuje sa tým bezpečne vydobyl; celú moenosf sloja s minimalnymi stratami a taktiež i tie zásoby, ktoré boli v minulosti ponechané ako izolačně vrstvy v trvale odpísaných zásobách.The method of drainage of the aquifer with uneven filtration coefficient in the horizontal and vertical directions utilizes the principle of flattening with focus in the overlay and in the layer utility mineral secondary crack, by which the adverse coefficient is changed fittrácie. Secondary pulkin water flowing down to the level of subsoil interface where it is pumped out by the known mining method works. It makes it safe earned; whole moenosf seam with minimal losses, as well as those stocks that they were previously insulated layers in permanently written off stocks.
Description
Vynález rieši spdsob odvodnenia zvodneného nadložia s nerovnoměrným koeficientom filtrácie vo vertikálnom a horizontálnom smere.The invention solves a method of dewatering an overburden with an uneven filtration coefficient in the vertical and horizontal directions.
Doteraz známe spósoby odvodňovania zvodneného nadložia využívajú systém hydrogeologických odvodňováních vrtov v předstihu před dobýváním, ktorý nie je dostatočne účinný a pri dobývaní užitkového nerastu pod takýmto nadložím sa musia vždy ponechávat hrubé izolačně vrstvy úžitkového nerastu k zabráneniu prievalu vdd a zvodnených hornin.The known methods of draining of overburden overburden utilize a system of hydrogeological drainage wells in advance of mining, which is not sufficiently effective and when extracting a mineral under such overburden, it is always necessary to leave coarse insulating layers of useful minerals to prevent the flow of widds and sedimentary rocks.
Vyššie uvedené nedostatky odstraňuje spdsob podl’a vynálezu, ktorého podstata je v tom, že hrubá plochouložená vrstva úžitkového nerastu so zvodneným nadložím sa záměrně plošné podrúbe porubom, ktorého počva je vedená v spodnej časti neporušeno j vrstvy úžitkového nerastu po jeho podloží, čím pri poklese zvodneného nadložia, ako aj zostatkovej vrstvy úžitkového nerastu tvoriacu dočasnú izoláciu porubu, sa vytvárajú sekundárná pukliny, ktorými sa hladina vody zo zvodneného nadložia gravitáciou znižuje na úroveň styku podložia so zostatkovou vrstvou úžitkového nerastu.The above-mentioned drawbacks are remedied by the method according to the invention, which is characterized in that the thick flat-lined layer of useful mineral with an overburden is deliberately flat-flanked by a flank whose origin is guided at the bottom of the intact mineral-layer over its subsoil. The secondary overburden, as well as the residual layer of useful mineral forming temporary lining insulation, create secondary fissures, by which the water level from the overburden is reduced by gravity to the level of contact of the subsoil with the residual layer of the useful mineral.
Hlavné výhody spdsobu odvodnenia zvodneného nadložia podlá vynálezu sú v tom, že umožňuje s nízkými nákladmi oproti nákladovosti hustej siete hydrogeologických vrtov, dokonalejšie odvodnit zvodnené nadložie a následné umožňuje i vydobyt celú vrstvu úžitkového nerastu s minimálnymí stratami.The main advantages of the method of dewatering an overburden according to the invention are that it allows, at a low cost compared to the cost of a dense network of hydrogeological wells, more thoroughly to dewater the overburden, and consequently allows the entire mineral mineral layer to be recovered with minimal losses.
Na priloženom výkrese je v řeze znázorněný vznik sekundárných puklin vplyvom plošného podrúbania porubom, kto-2238 348 rého počva je vedená na úrovni styku podložia s úžitkovým ηβrast óm.The attached drawing shows in section the formation of secondary cracks due to the surface felling of the face, which is led at the level of contact of the subsoil with the utility ηβrast óm.
Plošným podrobením hruběj plochouloženej neporušenej vrstvy 1 úžitkového nerastu porubom sa tlakom nadložených hornin poruší zvodnené nadložie 2, a zostatkové vrstva % úžitkového nerastu. Vznikájúce sekundárná pukliny £ postupné menia nerovnoměrný koeficient filtrácie zvodneného nadložia v horizontálnom a vertikálnom smere, čím voda z tohto nad“2 ložiaTpreniká sekundárné vzniknutými puklinami 6 na úroveň styku 8 podložia £ so zostatkovou vrstvou £ úžitkového nerastu. % tejto úrovně sa Voda odčerpává známým spdsobom cez banské diela £ situované v zostatkovej vrstvě £ úžitkového nerastu, ktoré sú budované za účelom přípravy a dobývania známou teohnológiou.By subjecting the coarse flat-laid intact mineral layer 1 to the surface, the aquifer overburden 2, and the residual layer% of the useful mineral, are damaged by the pressure of the overlying rocks. The resulting secondary fissures 6 gradually change the uneven filtration coefficient of the overburden in the horizontal and vertical directions, whereby the water from this above bed penetrates the secondary fissures 6 to the level of contact 8 of the subsoil 8 with the residual mineral bed layer 6. % of this level, the water is pumped off in a known manner through the mining works 6 situated in the residual layer 6 of the useful mineral, which are constructed for the purpose of preparation and mining by known theology.
Spósob odvodnenia zvodneného nadložia/podl’a vynálezu je možné využiť i pri opatovnom dobývaní v tých poliach, kde v minulosti sa už dobýval úžitkový nevset s ponecháváním niekolkých izolačných vrštiev, ako trvale odpísané zásoby považované zatial’ za nevydobytelné.The method of dewatering the overburden / in accordance with the invention can also be used in restoration mining in fields where in the past a utility comb has been mined, leaving several insulating layers, as permanently depreciated reserves considered unrecoverable.
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Application Number | Priority Date | Filing Date | Title |
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CS838401A CS238348B1 (en) | 1983-11-14 | 1983-11-14 | Water-bearing hanging wall dewatering method |
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CS838401A CS238348B1 (en) | 1983-11-14 | 1983-11-14 | Water-bearing hanging wall dewatering method |
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CS840183A1 CS840183A1 (en) | 1985-04-16 |
CS238348B1 true CS238348B1 (en) | 1985-11-13 |
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CS838401A CS238348B1 (en) | 1983-11-14 | 1983-11-14 | Water-bearing hanging wall dewatering method |
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