山区桥梁桩基深层一次成孔施工技术
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摘要
结合实例针对山区桥梁桩基所在土层裂隙水发达、渗水量大、岩石强度高、纯机械施工不能满足工期要求等难点,采用"爆破配合旋挖"一次成孔施工工艺,详细介绍了爆破设计与施工工序。工程实践表明,该工艺弥补了传统钻进方法在高强地质情况下的缺陷,成孔效率高,大大加快了施工进度,最后达到光面爆破的效果。
Combining with practical examples, the blasting design and construction procedure are introduced in details,and finally the effect of smooth blasting is achieved. for the difficulties of developed fissure water,large seepage volume,high rock strength and pure mechanical construction which can not meet the requirements of construction period in the soil layer where the pile foundation of bridge is located in mountainous area.
Combining with practical examples, the blasting design and construction procedure are introduced in details,and finally the effect of smooth blasting is achieved. for the difficulties of developed fissure water,large seepage volume,high rock strength and pure mechanical construction which can not meet the requirements of construction period in the soil layer where the pile foundation of bridge is located in mountainous area.
引文
[1]中国工程爆破协会,广东宏大爆破股份有限公司,浙江省高能爆破工程有限公司,等.爆破安全规程:GB6722—2014[S].北京:中国标准出版社,2014.
[2]汪旭光.爆破手册[M].北京:冶金工业出版社,2010.
[3]徐志慧,魏永兵,吴亚西.文物民居近距离桥梁桩基控制爆破施工技术[J].云南水力发电,2017,33(2):88-90,114.
[4]杜瑛.桥梁桩基人工挖孔流砂层处理及水下爆破技术探讨[J].交通科技,2013(2):67-68.
[5]周亦玲,刘鹏舟,李养成.聚能水压光面爆破技术在关山隧道施工中的应用研究[J].施工技术,2018,47(16):44-48.
[6]张建刚,朱继成,黄生保.隧道地下工程变断面光面爆破施工技术研究[J].施工技术,2018,47(S1):694-696.
[7]汪日生,龚传昌,刘建国,等.乌东德水电站拱肩槽建基面爆破开挖钻孔质量管控[J].施工技术,2017,46(S1):1218-1221.
[2]汪旭光.爆破手册[M].北京:冶金工业出版社,2010.
[3]徐志慧,魏永兵,吴亚西.文物民居近距离桥梁桩基控制爆破施工技术[J].云南水力发电,2017,33(2):88-90,114.
[4]杜瑛.桥梁桩基人工挖孔流砂层处理及水下爆破技术探讨[J].交通科技,2013(2):67-68.
[5]周亦玲,刘鹏舟,李养成.聚能水压光面爆破技术在关山隧道施工中的应用研究[J].施工技术,2018,47(16):44-48.
[6]张建刚,朱继成,黄生保.隧道地下工程变断面光面爆破施工技术研究[J].施工技术,2018,47(S1):694-696.
[7]汪日生,龚传昌,刘建国,等.乌东德水电站拱肩槽建基面爆破开挖钻孔质量管控[J].施工技术,2017,46(S1):1218-1221.