Study on rapid determination of imbibition height of remolded coal by water sensitive indicator

doi:10.16265/j.cnki.issn1003-3033.2017.11.022

Abstract

Abstract: In order to accurately and rapidly determine the imbibition height of added water in porous media, guide hole arrangement distance of coal seam infusion and reduce the gas content in coal seam, a water sensitive indicator, consisting of titanium dioxide, calcium carbonate, titanium dioxide and so on, was developed.Using the water sensitive indicator to test imbibition heights of the remolded coals that consist of different ratio of particles and pressing loads, then compared and analyzed the imbibition height obtained by water sensitive indicator and slice method test sudden change of water content.The results show that mixing titanium dioxide, calcium carbonate, titanium dioxide, cobaltous sulfate, cobalt thiocyanate and water according to the mass proportion of 1∶2∶5∶6∶13∶32 can produce a water sensitive indicator, and that imbibition heights obtained by water sensitive indicator test agree well with those obtained by using the slice method, and the relative errors are less than 7%.

Key words: water sensitive indicator, water content, rapid determination, remolded coal, imbibition height

CLC Number:

X936

YUE Jiwei, WANG Zhaofeng, CHEN Jinsheng, LI Haowei. Study on rapid determination of imbibition height of remolded coal by water sensitive indicator[J]. China Safety Science Journal, 2017, 27(11): 126-131.

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