工程爆破

2004, (03) 22-26+52

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爆炸密实饱和粉细砂地基中孔隙水压力的增长和消散
INCREMENT AND DECREMENT OF PORE-WATER PRESSURES IN EXPLOSIVE COMPACTING OF WATER-SATURATED FINES SAND GROUND

屈俊童,周健,李进军
QU Jun-tong~1,ZHOU Jian~1,LI Jin-jun~2(1.Tongji University,Shanghai 200092,China;2.EIEC,PLA Univ.of Sci.& Techn.,Nanjing 210007,China)

摘要(Abstract):

爆炸密实法处理饱和粉细砂地基的现场试验中,对爆炸过程中的孔隙水压力进行了实测。通过分析研究孔隙水压力的变化特性,发现孔隙水压力的增长和消散具有独特的规律性。研究表明,孔隙水压力的变化与炸药量、传感器至装药孔的距离、起爆方式有关。在爆炸密实的饱和粉细砂中,孔隙水压力消散很快,30min左右就消散95%以上。
In the site tests of which the explosive compacting is used for treatment of water-saturated fines sand ground,the pore-water pressures at the moment of explosion are measured.Through studying the change of pore-water pressures,the laws of increment and decrement of pore-water pressures are discovered.This study shows that the change of pore-water pressures is relative to charge mass,sensor-to-charged hole distance and initiation mode.In the explosive-compacted water-saturated fines sand,the pore-water pressures decrease quickly,declining to 95% of the original pressure within about 30 minutes.

关键词(KeyWords): 爆炸密实;孔隙水压力;饱和粉细砂地基
Explosive compacting; Pore-water pressure; Water-saturated fines sand ground

Abstract:

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作者(Authors): 屈俊童,周健,李进军
QU Jun-tong~1,ZHOU Jian~1,LI Jin-jun~2(1.Tongji University,Shanghai 200092,China;2.EIEC,PLA Univ.of Sci.& Techn.,Nanjing 210007,China)

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