铁路穿越小型采空区稳定性的评价方法研究  

Research on the Assessment Method for Stability of Railway Crossing Small-sized Mined-out Region

作　　者：刘熙[1] 张昆[1] 李晓凡[1] 

机构地区：[1]中铁二院工程集团有限责任公司,成都610031

出　　处：《铁道工程学报》2012年第12期32-35,47,共5页Journal of Railway Engineering Society

摘　　要：研究目的:本文结合沪昆铁路上纸厂煤矿的小型采空区的勘察,通过对小型采空区勘察方法研究,探讨小型采空区稳定性分析的方法,对铁路工程建设提出处理意见,并总结铁路通过采空区的经验,为类似工程提供参考。研究结论:(1)对于小型采空区,勘察范围应由大到小,先是在宏观上认识研究区的采空情况,最后重点研究对工程有影响的区域;(2)在勘察方法上按照先地质调查测绘,然后物探最后钻探,并在这三个过程中用这三个方法进行相互验证,相互补充;(3)应注意区分采空区类型,根据工程特点,确立勘察重点、选用相应的稳定性评价方法;(4)采用洞顶坍塌堵塞法及手册法对上纸厂小型采空区进行稳定性验算,得出了可以不对上纸厂采空区进行处理的结论。Research purposes： According to the survey of the small - sized mined - out region of the Shangzhichang Mine along the Shanghai - Kunming Railway, this paper introduces the survey methods for the small - sized mined - out region, discusses the methods for analysis of the stability of small - sized mined - out region, gives the disposal ideas on the railway engineering and summarizes the experiences of railway crossing the small - sized mined - out region for providing the reference to the similar works. Research conclusions： （ 1 ） For the small - sized mined - out region, the survey should be conducted from the big area to small area for knowing the overall condition of the mined - out region in macroscopic view first and then studing the area where has impact on the railway construction. （2） For the survey, first of all, the geological survey should be conducted, then the geophysical prospecting should be conducted and finally the exploration drilling should be conducted for verification, supplement and combination each other. （3） The key points of the survey should be made clear and appropriate method for the stability assessment should be chosen according to the different types of the mined - out region and the engineering features. （4） With the roof collapse blocking up method and the manual method, the checking calculation was made for the stability of the mined - out region. From the calculation result, it was concluded it was unnecessary to treat the mined - out region of Shangzhichang Mine.

关 键 词：小型采空区 沪昆铁路 稳定性研究 

分 类 号：U452[建筑科学—桥梁与隧道工程]