LAB-SCALE TESTS OF INCOHERENT ROCK REINFORCEMENT USING TWO-COMPONENT POLYMER BLENDS-Reference-Cited by-同舟云学术

LAB-SCALE TESTS OF INCOHERENT ROCK REINFORCEMENT USING TWO-COMPONENT POLYMER BLENDS

Published:2021-05-21 Issue:4 Volume:2 Page:198-204
ISSN:2618-981X
Container-title:Interexpo GEO-Siberia
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Author:

Shilova Tatyana V.¹,Rybalkin Leonid A.¹,Drobchik Andrei N.¹

Affiliation:

1. Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences

Abstract

The study addresses improvement of physical and mechanical properties of incoherent sediments by means of their chemical reinforcement using two-component resins. The lab-scale testing data on reinforcement of fine-grained quartz sand using two-component activated mineral and polyurethane resin blends are presented. Resins were injected by two ways on the tests. The first method was sequential injection of the polymer blend components in rock samples. The second method was injection of finished polymer blends. The two-component activated mineral and polyurethane resin blends ensure more effective reinforcement of incoherent sediment rocks as against foamed polyurethane blends. The uniaxial compression strength of reinforced fine-grained sand is 2.5-3 times higher in case of sequential injection of the components than in injection of finished mixtures. The elasticity modulus of the reinforced samples is 5.5-6 times higher in sequential injection than in injection of finished blends. The test results are useful for selection and optimization of injection method for two-component polymer blends in stabilization of broken rocks and in water-proofing of underground excavations.

Publisher

Siberian State University of Geosystems and Technologies

Subject

Industrial and Manufacturing Engineering

Reference20 articles.

1. Васильев В. В. Полимерные композиции в горном деле. - Наука, 1986.

2. Климчук, И.В. Опыт применения полимерных технологий на горнодобывающих предприятиях России / И.В. Климчук, В.М. Маланченко // Горная промышленность. - 2007. -№ 4. - С. 22-25.

3. Hu X., Cheng W., Wang D. Properties and applications of novel composite foam for blocking air leakage in coal mine //Russian Journal of Applied Chemistry. - 2014. - Т. 87. - №. 8. - С. 1099-1108.

4. Cornely W. Elastified silicate resins and polyurethane foam resins for the stabilisation of strata - a comparison // Proceedings of the 6th International Seminary Reinforcement and sealing of rock and construction at the beginning of 21st century. - Ostrava, 2001.

5. Holter K. G. et al. Testing of sprayed waterproofing membranes for single-shell sprayed concrete tunnel linings in hard rock //Proceedings of the world tunnel congress. - 2014.