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Industrial tests of rock consolidation for fighting floor swelling

Journal Article:

Abstract

Reports on investigations into the mechanism of floor swelling in main roadways and into rock mass stabilization by consolidating fluid injection combined with blasting. The principal cause of deterioration in the stability of workings is considered to be the state of stress in the rock mass, rock destruction in side walls where rock blocks are being pressed into the floor while the floor rock is squeezed out into the working space. A case study of fluid injection combined with blasting applied in several mines in the Donbass is presented where holes were drilled 1.5-3 m deep and explosive charges of 0.07-0.1 kg/hole and injection of hardening solutions (0.56-0.83 m{sup 3}/m of workings) were applied. As a result floor swelling rates were reduced by up to about 5 times (e.g. from 2.5 mm/d to 0.5 mm/d.). The period of maintenence free upkeep of workings was extended to 6-8 years. The economic effect in maintenance of 1 m of workings was 11.7 rubles for floor consolidation without sidewall bolting and 51.4 rubles for floor consolidation combined with sidewall bolting. Recommendations that concern the technology of floor consolidation by fluid injection and blasting are made. 4 refs.
Authors:
Pirskii, A A; Stovpnik, S N [1] 
  1. KPI (USSR)
Publication Date:
Apr 01, 1990
Product Type:
Journal Article
Reference Number:
CLA-91-060098; EDB-91-069583
Resource Relation:
Journal Name: Ugol' Ukrainy; (Ukrainian SSR); Journal Volume: 4
Subject:
01 COAL, LIGNITE, AND PEAT; MINE ROADWAYS; FLOORS; STRATA CONTROL; FLUID INJECTION; COAL MINES; COST; EXPLOSIVE FRACTURING; MAINTENANCE; ROCK MECHANICS; ROOF BOLTS; STABILIZATION; SWELLING; UNDERGROUND MINING; USSR; ASIA; COMMINUTION; EASTERN EUROPE; EQUIPMENT; EUROPE; FRACTURING; MECHANICS; MINES; MINING; MINING EQUIPMENT; TUNNELS; UNDERGROUND FACILITIES; 012031* - Coal, Lignite, & Peat- Underground Mining- Strata Mechanics & Control- (1987-)
OSTI ID:
5823941
Country of Origin:
USSR
Language:
Russian
Other Identifying Numbers:
Journal ID: ISSN 0041-5804; CODEN: UGOUA
Submitting Site:
CLA
Size:
Pages: 9-11
Announcement Date:

Journal Article:

Citation Formats

Pirskii, A A, and Stovpnik, S N. Industrial tests of rock consolidation for fighting floor swelling. USSR: N. p., 1990. Web.
Pirskii, A A, & Stovpnik, S N. Industrial tests of rock consolidation for fighting floor swelling. USSR.
Pirskii, A A, and Stovpnik, S N. 1990. "Industrial tests of rock consolidation for fighting floor swelling." USSR.
@misc{etde_5823941,
title = {Industrial tests of rock consolidation for fighting floor swelling}
author = {Pirskii, A A, and Stovpnik, S N}
abstractNote = {Reports on investigations into the mechanism of floor swelling in main roadways and into rock mass stabilization by consolidating fluid injection combined with blasting. The principal cause of deterioration in the stability of workings is considered to be the state of stress in the rock mass, rock destruction in side walls where rock blocks are being pressed into the floor while the floor rock is squeezed out into the working space. A case study of fluid injection combined with blasting applied in several mines in the Donbass is presented where holes were drilled 1.5-3 m deep and explosive charges of 0.07-0.1 kg/hole and injection of hardening solutions (0.56-0.83 m{sup 3}/m of workings) were applied. As a result floor swelling rates were reduced by up to about 5 times (e.g. from 2.5 mm/d to 0.5 mm/d.). The period of maintenence free upkeep of workings was extended to 6-8 years. The economic effect in maintenance of 1 m of workings was 11.7 rubles for floor consolidation without sidewall bolting and 51.4 rubles for floor consolidation combined with sidewall bolting. Recommendations that concern the technology of floor consolidation by fluid injection and blasting are made. 4 refs.}
journal = {Ugol' Ukrainy; (Ukrainian SSR)}
volume = {4}
journal type = {AC}
place = {USSR}
year = {1990}
month = {Apr}
}