CHANGE OF STRESS FIELD AROUND THE MINE WORKING WITH DIFFERENT TYPES OF SUPPORT WHICH CONSERVATED AFTER WALL FACE DRIVING
- Деталі
- Батьківська категорія: Геотехнічна механіка, 2015
- Категорія: Збірник наукових праць "Геотехнічна механіка" Випуск-121
UDC 622.281.74:622.831
Author:
Krukovskiy A.P., D.Sc. (Tech.), Senior Researcher (IGTM NAS of Ukraine)
Abstract.
This article describes how elastic-plastic deformation of rock and rock mass around the mining working in the area of its coupling with wall face. In the area of extraction influence support of mining workings is severely tested, as the loads are much increased. Therefore, the question of the optimal form of support for coupling has great importance, especially if mining working conservate for recycling.
Distributions of the parameters that characterize the value of different components of stress field and dumping of rock mass and zones of inelastic deformations in three cases: when applying frame, anchor-frame support and anchor-frame, reinforced rope anchors.
It is shown that extraction works with using frame support led to the formation of a zone of possible caving of the destroyed rock mass and critical rasing of value of different components by the left side of mining workings. The rock-anchor block are formed in the roof of mining workings if we using anchor support and load-carrying ceiling after wall face driving save working conditions. However, there is a possibility of sinking of bonded anchors block if we have non-sustainable conntry rocks or if we have weak rock layer in main roof of the mining workings. Therefore, we using long cable bolts as enforced support, that bond load-carrying ceiling with virgin rock mass.
Keywords:
roof bolting, anchor-cable supporting, stress-strain state, coupling drift with wall face
References:
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About the author:
Krukovskiy Alexander Petrovich, Doctor of Technical Sciences (D. Sc), Senior Researcher, Deputy Director of the institute, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, Ця електронна адреса захищена від спам-ботів. вам потрібно увімкнути JavaScript, щоб побачити її.