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某电厂采用浅埋暗挖法在既有铁路专用线下修建输煤廊道,由于该地层松散、含水率高,可塑性强、自稳能力差,覆土厚度最薄处只有5m,且必须保证既有铁路正常运营,安全隐患较大。根据该廊道工程的特点,采用CD工法施工,人工开挖,超前支护,在不影响行车的情况下,成功穿越既有铁路线。
Because of the loose stratum, high moisture content, strong plasticity and poor self-stability, a power plant uses the method of shallow burying and undercutting to construct the coal transportation corridor under the existing special railway lines. The thickness of the soil covering is only 5m at the thinnest, and it must be ensured that both A normal operation of the railway, greater security risks. According to the characteristics of the corridor project, CD construction method, artificial excavation, advanced support, without affecting the traffic conditions, the successful crossing of the existing railway line.