高速铁路大面积密集煤矿采空区工程地质勘察及评价  

Engineering Geological Survey and Evaluation of Large Dense Coal Gob Area for High-speed Railway

作　　者：王亚威 WANG Yawei(China Railway Siyuan Survey and Design Institute Group Co.,Ltd.,Wuhan,Hubei 430063,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,湖北武汉430063

出　　处：《施工技术（中英文）》2022年第5期80-84,共5页Construction Technology

基　　金：中国铁路总公司科技研究开发计划课题(2017G008-J)。

摘　　要：采空区是铁路勘察设计中的重大不良地质因素,以某高速铁路通过大面积密集煤矿采空区为例,采用资料搜集、调查走访、物探和深孔钻探相结合的综合勘察方法,查明采空区范围及影响边界,为线路方案做出可靠的分析评价。在收集调查资料的基础上,根据开采规模、煤层产状及与线路的相对关系,对各煤矿采空区对线路方案的影响进行初步分析判断,针对重点煤矿采空区,辅以物探和深孔钻探,详细查明其开采边界。高速铁路采空区的安全距离应根据线路走向与矿层关系,采用相应边界角进行计算,并根据铁路等级增设一定围护带宽度。The mined-out area is a major unfavorable geological factor in railway survey and design. Taking a high-speed railway passing through a large area of dense coal mined-out area as an example, a comprehensive survey method, combining data collection, investigation and visiting, geophysical prospecting and deep-hole drilling, is adopted to identify the scope of mined-out area and the influence boundary, and make reliable analysis and evaluation for the line scheme. On the basis of survey data collected, and according to the mining scale, coal seam occurrence and their relative relationship with the line, the influence of each coal mined-out area on the line scheme is preliminarily analyzed and judged. For the key coal mined-out area, the mining boundary is identified in detail and supplemented by geophysical prospecting and deep-hole drilling. The safety distance of the mined-out area of high-speed railway should be calculated according to the relationship between the line direction and coal seam occurrence, and the corresponding boundary angle should be adopted, and a certain width of the protective belt should be added according to the railway grade.

关 键 词：高速铁路 采空区 综合勘察 安全距离 边界角 

分 类 号：TU528.2[建筑科学—建筑技术科学]