Development of design solution for mine workings support repair and recovery in case of local massif deformations

Sergey Tsibaev,Alexey Renev,Stepan I Kalinin

doi:10.1051/e3sconf/202131501010

Sergey Tsibaev, Alexey Renev + Show 1 more

Open Access

https://doi.org/10.1051/e3sconf/202131501010

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Abstract

The article describes the causes of occurrence and forms of geomechanical processes manifestation in surrounding coal-rock massif of mine workings supported by anchor support. Based on long-term field observations, six forms of typical deformations of the surrounding massif have been established. Design solutions to strengthen the anchor support or complete reinforcement of damaged sections of mine workings during geomechanical processes of local felling have been developed. They include: installation scheme, substantiation of parameters and list of used reinforcement elements; technology of work, a list of equipment used.

Highlights

The most important problem of safe long-term maintenance of underground mine workings is the assessment of technogenic impact on the coal massif and support elements
When eliminating the consequences of man-made accidents that cause the formation of underground fires, as well as during the conservation or liquidation of coal mines by the "wet" method, water fills the network of mine workings to a full section
Based on the results of long-term observations of the state of surrounding rock mass and elements of anchorage [2,3,4], it has been established that geomechanical processes in the near-contour layers of workings occur in the following sequence

Summary

Introduction

The most important problem of safe long-term maintenance of underground mine workings is the assessment of technogenic impact on the coal massif and support elements (flooding of mine workings, the impact of seismic and shock air waves from massive industrial and uncontrolled explosions). Over the past 20 years, 13 accidents with group fatalities have occurred at the mines of Kuzbass. When eliminating the consequences of man-made accidents that cause the formation of underground fires, as well as during the conservation or liquidation of coal mines by the "wet" method, water fills the network of mine workings to a full section. The joint development of coal seams by open and underground methods in the long term leads to deformations of the coal massif and disruption of the roof bolting stability [1]. Yalevsky" mine, Taldinskoe-Zapadnoe mine union), JSC HC SDS-Ugol (mine Yuzhnaya)

The results

Discussion

Conclusions