铁路下采煤保护煤柱设计

摘要

铁路保护煤柱影响到铁路的安全运营和煤炭开采．针对中井矿铁路压煤严重、煤炭回收率低的问题，采用垂线法对中井矿铁路保护煤柱进行留设，并设计了合理的开采措施与铁路保护煤柱相配合，通过地表沉陷预计对铁路保护煤柱的合理性进行检验．结果表明：中井矿铁路保护煤柱能够有效的控制地表变形，将铁路干线变形控制在国家保护等级范围内，即保证了地下煤炭资源的采出，又不影响铁路安全运营．%Protective coal - pillar design influences railway safety and coal mining. According to lots of coal resources under railway and low recovery rate of Zhongjing mine. The protective coal pillars of railway are remained by the vertical method, and the reasonable exploitation measures are designed to match protective coal pillar, then the rationality of protective coal - pillar is inspected through subsidence prediction. Results show that the protective coal pillar in Zhongjing mine could control surface deformation availably, and the deformation of railway lines could be controlled in state level range, which not only guarantee production of coal resources in underground, but also barely affect railway safety operation.