Evaluation of pre-jamming indication parameter during blind backfilling technique

• Autorzy: Panda S. , Pal S. K. , Murthy P. V. S. N.

Identyfikatory

DOI

10.1016/j.jsm.2016.10.001

• Języki publikacji: EN

Abstrakty

EN

Hydraulic blind backfilling is used to reduce subsidence problems above old underground water-logged coal mines. This paper describes experimental research on a fully transparent model of a straight underground mine gallery. An automatic data acquisition systemwas installed in the model to continuously record the sand and water flowrates along with the inlet pressure of the slurry near the model's inlet. Pressure signature graphs and pressure loss curves with bed advancement under different flow conditions are examined. Pressure signature analyses for various flowrates and sand slurry concentrations are conducted to evaluate a pre-jamming indication parameter, which could be used to indicate the arrival of the final stage of filling.

Słowa kluczowe

EN

subsidence; abandoned mine; hydraulic gravity blind backfilling; data acquisition system; pressure signature; pre-jamming indication parameter

PL

osiadanie; opuszczona kopalnia; system akwizycji danych; pole ciśnieniowe

• Wydawca: Elsevier ; Główny Instytut Górnictwa
• Czasopismo: Journal of Sustainable Mining
• Rocznik: 2016
• Tom: Vol. 15, iss. 3
• Strony: 100--107
• Opis fizyczny: Bibliogr. 18 poz.

Twórcy

autor

Panda S.

• Department of Mining Engineering, I.I.T. Kharagpur, West Bengal, 721302, India

autor

Pal S. K.

• Department of Mining Engineering, I.I.T. Kharagpur, West Bengal, 721302, India

autor

Murthy P. V. S. N.

• Department of Mathematics, I.I.T. Kharagpur, West Bengal, 721302, India

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