煤层采空区铁路工程地质综合勘察技术研究

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摘要研究目的：在高速铁路、客运专线和铁路路网配套建设中，线路经过地段往往难以绕避一些时间久远、分布无规律且地面痕迹不明显的小煤窑等古老采空区。此类采空区对铁路建筑物的危害极大，如何准确地查明其空间位置、塌落、回填和充水情况、残留的有害气体成分和分布情况等，一直是困扰铁路工程地质勘察的一大难题。本文以赣龙复线铁路小密隧道出口段为工程实例，采用综合勘察技术查明采空区复杂的工程地质条件，取得合理的岩土参数，为采空区加固处理设计提供可靠依据。研究结论：（1）采用地质调绘、综合物探、结合必要的地质钻探、综合测试，并通过综合分析、研究等综合勘察技术可准确查明采空区复杂的工程地质条件，取得合理的岩土参数；（2）小密隧道施工已近四年，经施工验证，采空区地质勘察成果与实际地质条件相当吻合；（3）提出了铁路工程采空区综合勘察存在的问题和相关建议；（4）本研究结论可为类似采空区工程地质勘察提供一定的指导和参考。

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	谭远发

关键词 ：山区铁路, 煤层采空区, 工程地质, 综合勘察

Abstract： Abstract：Research purposes： In the construction of high-speed railway, passenger dedicated line and railway network matching buildings in recent years, generally speaking, long-distance mainlines pass through broad areas with very complex topographic and geologic conditions, so local area is often hard to avoid for some age-old, irregular distribution, and the ground traces small mines and other ancient coal gob areas which is not obvious. This kind of coal gob areas ofen great harm to the railway buildings. How to accurately find out this kind of goaf spatial location, morphology, backfill and residual water filling conditions, the harmful gas composition and distribution etc, has always been a big problem in railway engineering geological investigation. Taking the export section of small dense tunnel for Gan-Long double track railway as an example, geological integrated survey technology can accurately find out the complicated engineering geological conditions, obtain reasonable geotechnical parameters, and provide a reliable basis for coal gob area reinforcement design.
Research conclusions：(1) The working steps of geological integrated survey technology by geological mapping, comprehensive geophysical exploration, combined with the necessary geological drilling, comprehensive test, and through the comprehensive analysis and research can accurately identify the gob complicated engineering geological conditions, obtain reasonable geotechnical parameters. (2)The construction of about four years for Xiaomi tunnel shows the result of geological integrated survey conforms to the actual geological conditions. (3) This paper points out the problems existing in the coal gob area comprehensive survey of railway engineering and gives appropriate recommendations. (4) The research results can provide the guidance and reference to similar engineering geological investigation of coal gob area for railway in the future.

Key words： Key words: mountain railway； coal gob area；engineering geology； integrated investigation

作者简介: 谭远发，1968年出生，男，高级工程师。

引用本文:

谭远发. 煤层采空区铁路工程地质综合勘察技术研究[J]. 铁道工程, 2015, 32(2): 16-.
TAN Yuan-fa.

Research on the Geological Integrated Investigation Technology for Railway Engineering of Coal Gob Area

. 铁道工程, 2015, 32(2): 16-.

链接本文:

http://tdgcxb.crec.cn/CN/ 或 http://tdgcxb.crec.cn/CN/Y2015/V32/I2/16

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