Paste-like backfill technology used in coal cutting area and the paste-like thereof

Paste-like backfill technology used in coal cutting area and the paste-like thereof

The invention relates to a paste self-flow stuff technique of coal mine and relative paste, which uses the coal gangue as main stuff. The invention is characterized in that the stuff technique comprises that mixing cement and powder coal into water to form pulp; adding coal gangue to form coal gangu...

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1. Verfasser: DIANZHEN,WANG ZHANG
Format: Patent
Sprache:eng
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EARTH DRILLING
FIXED CONSTRUCTIONS
MINING
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS
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creator DIANZHEN,WANG ZHANG
description The invention relates to a paste self-flow stuff technique of coal mine and relative paste, which uses the coal gangue as main stuff. The invention is characterized in that the stuff technique comprises that mixing cement and powder coal into water to form pulp; adding coal gangue to form coal gangue suspension paste; using tube to self-flow transmit the paste into under-well stuff area to stuff the mining field. The invention uses coal gangue as main stuff material and uses self-flow stuff technique, with low cost and the application in the underground coal layer, to reduce the pollution of coal gangue. The inventive paste has high water contant and low water leakage, therefore, the stuff has high strength.
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subjects EARTH DRILLING
FIXED CONSTRUCTIONS
MINING
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS
title Paste-like backfill technology used in coal cutting area and the paste-like thereof
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