Distribution of load on the support of horizontal mine workings in Karadzharo-Shakhansky mines

Abstract

In the current seven-year Tenteksky and Churubay-Nurinsky coal districts are the main areas of construction of new mines in the Karaganda basin. Conditions of maintenance of horizontal and inclined mine workings at the mines under construction are as diverse as physical and mechanical properties of rocks in which these workings are sinking. Maintenance of rolling mine workings of Tenteksky district does not present great difficulties, as sinking is carried out mainly in strong stable rocks. The most difficult conditions for maintenance of mine workings of Karadzharo-Shakhansky section of Churubai-Nura district, especially at ventilation horizons. Fasteners installed here (solid wooden, metal, prefabricated reinforced concrete, etc.) due to high all-round pressure are deformed and must be replaced. Most of the mine workings were reinforced several times during the construction period. Reinforcement works require large expenditures of labor, time and money.