摘要
矿山压力是影响矿间防水煤柱尺寸确定的重要因素,防水煤柱的破坏是矿压、水压以及煤柱本身的物理—力学特性的综合作用的结果。文章还给出了合理防水煤柱的计算公式。
The water berrier between two adjacent mines suffers not only the water pressure but also groundpressure. The barrier coal mass is always broken to someextent under the redistributed and concentrated stressresulted from the mining activities of both sides, hencethe ground pressure correlates directly to the permeabilitycoefficient and seepage discharge of the barrier and evengoverns dominantly the failure of the barrier. Thisconclusion has been verified by laboratorial experimentand field measurement. Therefore the paper pointsemphatically out that the state and failure of the barriersystem are the macro phenomenon reflecting the relationbetween the combined action of ground pressure as wellas water pressure and the physico-mechanical propertiesof coal mass in the barrier. Hence during designing thebarrier, the role played by ground pressure must be takeninto account. For calculating the width of the barrier,the peper puts forward a formula. It is obvious from theformula that the increase of ground essure induces the increase of the critical equilibrium area, which isunfavourable, on one hand, to the barrier in waterprevention, but results in the increase of the centralelastic core of the barrier, which is in favour of thebarrier, on the other hand, to resist more waterpressure. Hence the influence of ground pressure is ofdual significance on the water berrier between adjacentmines.
出处
《矿山压力与顶板管理》
1992年第1期66-69,102-104,共4页
Ground Pressure and Strata Control
