钟冬望,陶好好,李琳娜,李腾飞,何理,司剑峰,万佳伟,高晗

• 1:武汉科技大学理学院
• 2:湖北省智能爆破工程技术研究中心
• 3:中铁四院集团工程运维有限责任公司

摘要(Abstract)：

边坡预裂爆破在河道边坡一次成型开挖中有着广泛的应用，可有效减小边坡面保留岩体损伤，降低爆破振动强度，研究涉水边坡预裂爆破的合理参数对河道涉水爆破开挖工程具有重要意义。基于相似原理中的几何相似、物理相似与动力学相似设计了涉水边坡预裂爆破的试验模型，决定采用混凝土替代红砂岩、采用雷管替代乳化炸药进行试验；并对不同工况下的预裂缝成缝质量、边坡坡面成型质量、保留岩体损伤进行监测，结果发现孔径由0.8 cm增加至1.2 cm,预裂缝的成缝质量以及边坡成型质量有明显提升，保留岩体的损伤降低24.86%;现场试验结果表明：在涉水边坡预裂爆破工程实践中，当地质条件为中硬岩石时，采用115 mm的预裂孔孔径以及80 cm的预裂孔孔距，可取得较好的爆破效果。研究结果可为类似工程项目的预裂孔参数优化提供参考依据。

关键词(KeyWords)： 涉水边坡;预裂爆破;预裂孔参数优化;岩体损伤;模型试验

Abstract:

Keywords:

基金项目(Foundation): 湖北省重点研发计划项目(2020BCA084);; 国家自然科学基金(52274136);; 湖北省自然科学基金项目(2022CFB594);; 武汉科技大学研究生创新创业基金(JCX2021064)~~

作者(Author): 钟冬望,陶好好,李琳娜,李腾飞,何理,司剑峰,万佳伟,高晗

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