全侧向爆破挤淤快速筑堤技术适用范围及施工参数优化
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Application scope and construction parameter optimization of full lateral blast compaction rapid embankment construction technology
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    摘要:

    针对现行爆破相关规范多局限于端部小断面爆破挤淤推进,适用范围及施工参数取值已不能满足现有工程大断面、高效率、短工期的需要,进行了全侧向爆破挤淤快速筑堤技术研究。采用直接抛填形成临时护岸加侧向爆破挤淤排石拓宽堤身的方式,拓展了传统爆破挤淤筑堤技术的应用范围,并通过现场试验优化施工参数取值,提出了突破规范要求的爆破挤淤最低单耗限值和药包埋入深度限值。结果表明,该方法对于堤坝断面宽度大于30 m,下卧淤泥土层厚度5~18 m较为合适,处理10~15 m淤泥厚度效果最佳,爆破单位体积淤泥所需药量可降至0.23 kg/m3,药包埋设高程可达到距淤泥底1/3厚度位置。

    Abstract:

    The current specifications of blast compaction are mostly applicable to small-section blasting at the end,the application scope and construction parameters can not meet the requirements of large section embankment,high efficiency and short construction period.To solve the problems,this paper researches on the full lateral blast compaction rapid embankment construction technology.By direct filling to form temporary revetment and full lateral blast filling rapid embankment construction technology,the scope of the specification can be expanded. By optimizing the construction parameters through field tests,the limits of minimum single consumption and embedment depth of blasting compaction are proposed to break through the specification requirements.The results show that the method is suitable for the embankment with the width of section larger than 30 m and the depth of the underlying silt layer is 5-18 m,the best effect is achieved for the treatment of the silt thickness of 10-15 m,the charge required for unit volume of blast compaction can be as low as 0.23 kg/m3,and the elevation of the charge embedding can reach the position 1/3 of the thickness from the silt bottom.

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杨 峰,刘 莉,李瀚轩.全侧向爆破挤淤快速筑堤技术适用范围及施工参数优化[J].水运工程,2022(9):210-214.

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  • 在线发布日期: 2022-09-13
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