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新建邢都公路栾卸大桥部分桥墩位于废弃小煤矿采空区之上 ,在大桥荷载作用下 ,采空区上覆岩层和地表可能重新移动 ,引起大桥地基的移动、变形和破坏 ,危及大桥的安全 .据物理勘探的结果 ,确定了采空区的范围 ,分析了大桥荷载对采空区煤柱的影响 .在充分论证的基础上 ,提出了加固大桥地基的技术措施 ,对于类似问题的解决具有一定的借鉴意义 .
Some of the new piers of the Luan Demolition Bridge in Xingdu Highway are located above the mined-out area of the abandoned small coal mines. Under the load of the bridge, the overlying strata and surface of the mined-out area may move again, causing the movement, deformation and destruction of the foundation of the bridge and endangering the bridge Safety.According to the results of physical exploration, the scope of goaf is determined and the influence of bridge load on coal pillar in goaf is analyzed.On the basis of sufficient demonstration, the technical measures to reinforce the foundation of bridge are proposed, and the solution to similar problems Have some reference significance.