Науковий вісник НГУ

Analysis of maximum values of vertical and horizontal displacement of earth surface

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Category: Mining

Last Updated on 16 May 2013

Published on 15 November 2012

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Authors:

A.S. Kuchin, Cand. Sci. (Tech.), State Higher Educational Institution “National Mining University”, Doctorate of the Department of Mining Surveying, Dnipropetrovsk, Ukraine

Abstract:

Purpose. The notion about proportionality of vertical and horizontal displacements within the limits of the affected zone when mining coal seams is basic in science of surface undermining. The purpose of the article is establishment of correlation between maximal vertical and horizontal displacements on the ground of data received via mine surveying instrumental observations of surface shifting in the Western Donbass.

Methodology. Mining-and-geological conditions of undermined observation stations were different: the depth of the extraction was 100–550 meters, thickness of extracted seams was 0.7–1.2 meters, overburden thickness was 50–200 meters, and inclination of seams was 2–5°. Based on the results of instrumental observations after the surface shift on the profile lines (22 cases), the maximal values of horizontal and vertical displacement were set.

Findings. It was set that the maximal surface vertical displacement linearly depends on the thickness of extracted coal seam. But the similar dependence between the thickness of the seam and maximal horizontal displacements was not established. This testifies that the correlation of the vertical and horizontal displacements does not submit the law of proportions. There is an opinion that the sizes of horizontal displacement depend on the overburden thickness. But dependence between these values at the considerable change of the thickness of covering rocks in the Western Donbass coal region was not discovered. The analysis of the maximal horizontal displacements, the overburden thickness and the depth of development showed that there was dependence between them at separate considerations in the main sections of trough. The location of profile line in relation to direction of longwall movement influences the sizes of maximal horizontal displacement.

Originality. It was found out that correlation of the maximal horizontal and vertical displacement is inconstant within the limits of a trough.

Practical value. The results of the research will allow developing the method of determination of the horizontal displacements and deformation for the conditions of the coal seams extraction in the Western Donbass.

References:

1. Правила підробки будівель, споруд та природних об’єктів при видобуванні вугілля підземним способом: ГСТУ 101.00159226.001-2003. – [Чинний від 2003–11–22]. – К.: Мінпаливенерго України, 2003. – 126 с.– табл. – (Національні стандарти України). – Текст: рос., укр.

Rules of undermining of buildings, constructions and natural objects during development of coal deposits by an underground method: GSTU 101.00159226.001-2003, valid since November 22, 2003, Ministry of Fuel and Energetics of Ukraine, (2003), (National standards of Ukraine).

2. Кучин А.С. Горизонтальные смещения земной поверхности над движущимся очистным забоем / Кучин А.С. // Науковий вісник НГУ України. – Дніпропетровськ, 2011.– № 3– С. 26–30.

Kuchin, A.S. (2011), “Horizontal displacement of earth surface above the moving coalface”, Naukovyi visnyk Natsionalnoho hirnychoho universytetu, no.3, pp. 26–30.

3. Гавриленко Ю.М. Особливості застосування методу скінченних елементів для моделювання процесів зрушення масиву гірських порід і земної поверхні у просторовій постановці / Гавриленко Ю.М., О.Г. Петрушин // Наукові праці Донецького національного технічного університету. Серія: гірничо-геологічна. – Донецьк: ДонНТУ. – 2009. – Вип. 143. – С. 181–198.

Gavrilenko, Yu.M. and Petrushin, O.G. (2009), “Features of finite element method application for the design of rock massif earth surface movement processes in spatial raising”, Scientific Works of the Donetsk National Technical University, Series: mining-and-geological, DonNTU, Issue.143, pp. 181–198.

4. Кучин О.С. Вплив напрямку руху очисного вибою на процес зрушення у Західному Донбасі / Кучин О.С. // Вісник ЖДТУ. – 2003. – №3. – С. 196–200.

Kuchin, O.S. (2003), “Influence of direction of motion of production coalface on shifting processes in Western Donbas”, Visnyk ZhDTU, no.3, pp. 196–200.

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