松软岩层中永久洞室的联合支护方法
The Combining Support Method of Permanent Opening in Soft Rock
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摘要: 永久洞室的支护方法,多年来一直是松软岩层矿井生产的技术难关。常规的干砌料石支护,隔水性能差、寿命短、维修量大,严重地影响生产。作者针对松软岩层围岩变形特性,通过长期的现场量测,以及计算机模拟检验等手段,对联合支护方法进行了较全面的考察,证实该方法适用于松坎岩层永久洞室的支护。 联合支护的永久洞室投入使用五年来的实践表明。围岩变形趋于稳定,巷道状态良好,设备运行正常,在技术上和经济上都取得了较好的效益。为解决地下水丰富的松坎岩层矿井的永久支护奠定了良好基础。Abstract: The supporting of permanent openings has been a difficult problem in production and technique for many years. The lining support commonly used in practice is poorly water proof, short life and needs constant maintenance, so it seriously interferes with the production of underground mine. According to the basic properties of soft rock, a combining support method is investigated by means of computer simulation and in-situ measurements. As a matter of fact, this method is shown to be applicable especially to support the permanent opening in soft rock. It has been found in a permanent opening supported by this method after three years of service that the surrounding rocks tend to be stable, gallery is in good condition and the equipments run perfectly well. In addition, this method not only achieve benefits technically and economically, but is also promising for supporting the permanent opening in soft rock with rich underground water.