充填条带开采公路桥梁煤柱的理论与实践

Theory and Practice of Strip Mining Coal-pillar for Highway Bridge

就煤矿采动变形对桥梁的影响进行了分析,并结合桥梁相关规范,对桥梁的抗变形能力进行了研究与确定。在对桥梁抗变形能力分析的基础上,结合具体工程实例,对桥梁煤柱的开采方案进行了设计。研究表明,充填条带开采可以在对煤柱部分回收的同时最大限度地减小地表移动变形,不影响桥梁的安全使用。

Influence of mining deformation on bridge was analyzed .Combining with corresponding specification of bridge , anti-deforma-tion ability of bridge was determined .On the basis of this , mining projection of coal-pillar for bridge was designed .Result showed that stowing strip mining could mine part coal-pillar, and maximally reduce surface movement and deformation , which would not influence bridge safety.