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Method of working thick beds

Abstract

The patented method of working thick coal beds in layers consists of creating in the collapsed rocks or from the fill material a bearing rock plate by strengthening these rocks with a hardening composition made of wastes of raw material, resin and water injected into the rock through wells. The difference in the suggestion is that through boreholes drilled in the lower part of the rock roofing on a previously calculated network, a solution is regularly injected which consists of dust wastes obtained in electric filters during production of clinker from mineral raw material in a quantity of 60-70% by volume, wastes of open-hearth production in a quantity of 15-20% and natural sand in a quantity of 15-20%, and water in a quantity of 35-55% of the volume of mineral components. In the second variant, the injected compostion contains: wastes from production of clinker 55-57%, open-hearth wastes 20-23%, natural sand 12-14%, asbestos fine particles 7-8% and water 38-45% of the volume of mineral components. In addition, the difference is that in the boreholes drilled in the coal block directly under the roofing, a composition is injected which consists of natural sand and catalyst in the form of powder and individually  More>>
Publication Date:
Dec 30, 1980
Product Type:
Patent
Report Number:
PL 201287
Reference Number:
EDB-83-055174
Resource Relation:
Patent File Date: Filed date 10 Dec 1975; Other Information: PAT-APPL-106972
Subject:
01 COAL, LIGNITE, AND PEAT; SLICE MINING; STRATA CONTROL; BACKFILLING; BOREHOLES; COAL SEAMS; CUTTING; GROUTING; ROCKS; USSR; ASIA; CAVITIES; COAL DEPOSITS; EASTERN EUROPE; EUROPE; GEOLOGIC DEPOSITS; MACHINING; MINERAL RESOURCES; MINING; RESOURCES; UNDERGROUND MINING; 012000* - Coal, Lignite, & Peat- Mining
OSTI ID:
6548542
Country of Origin:
Poland
Language:
Polish
Availability:
Plenum Publishing Corp., New York, NY.
Submitting Site:
HEDB
Size:
Pages: v
Announcement Date:

Citation Formats

Giezynski, A, Bialasik, A, Krawiec, A, and Wylenzek, A. Method of working thick beds. Poland: N. p., 1980. Web.
Giezynski, A, Bialasik, A, Krawiec, A, & Wylenzek, A. Method of working thick beds. Poland.
Giezynski, A, Bialasik, A, Krawiec, A, and Wylenzek, A. 1980. "Method of working thick beds." Poland.
@misc{etde_6548542,
title = {Method of working thick beds}
author = {Giezynski, A, Bialasik, A, Krawiec, A, and Wylenzek, A}
abstractNote = {The patented method of working thick coal beds in layers consists of creating in the collapsed rocks or from the fill material a bearing rock plate by strengthening these rocks with a hardening composition made of wastes of raw material, resin and water injected into the rock through wells. The difference in the suggestion is that through boreholes drilled in the lower part of the rock roofing on a previously calculated network, a solution is regularly injected which consists of dust wastes obtained in electric filters during production of clinker from mineral raw material in a quantity of 60-70% by volume, wastes of open-hearth production in a quantity of 15-20% and natural sand in a quantity of 15-20%, and water in a quantity of 35-55% of the volume of mineral components. In the second variant, the injected compostion contains: wastes from production of clinker 55-57%, open-hearth wastes 20-23%, natural sand 12-14%, asbestos fine particles 7-8% and water 38-45% of the volume of mineral components. In addition, the difference is that in the boreholes drilled in the coal block directly under the roofing, a composition is injected which consists of natural sand and catalyst in the form of powder and individually supplied liquid synthetic resin in a quantity of 3-5% by weight in relation to the sand. The hardening time with normal temperature is 1-1.5 h, after which strength is reached of 80 kg-f/cm/sup 2/.}
place = {Poland}
year = {1980}
month = {Dec}
}