爆破器材
爆破器材
폭파기재
2013年
6期
32-37
,共6页
秦花%杨军%彭先泽%陈大勇
秦花%楊軍%彭先澤%陳大勇
진화%양군%팽선택%진대용
DDA%数值模拟%船坞围堰%拆除
DDA%數值模擬%船塢圍堰%拆除
DDA%수치모의%선오위언%탁제
DDA%numerical simulation%dock cofferdam%demolition
利用DDA方法对船坞围堰的拆除爆破进行数值模拟,分析倾斜孔低水位、倾斜孔高水位、垂直孔和倾斜孔结合低水位以及垂直孔和倾斜孔结合高水位4种不同方案下的爆破特性和规律。研究结果表明:在某公司1#、2#船坞围堰的拆除爆破过程中,水位高低对倾斜孔装药影响不大,对垂直孔和倾斜孔结合装药有明显影响;垂直孔和倾斜孔结合装药高水位工况下形成的边坡较缓,低水位工况下形成的爆堆较低,容易产生水突然涌入坞门的现象;综合分析,选择倾斜孔装药爆破会得到更好的爆破效果。
利用DDA方法對船塢圍堰的拆除爆破進行數值模擬,分析傾斜孔低水位、傾斜孔高水位、垂直孔和傾斜孔結閤低水位以及垂直孔和傾斜孔結閤高水位4種不同方案下的爆破特性和規律。研究結果錶明:在某公司1#、2#船塢圍堰的拆除爆破過程中,水位高低對傾斜孔裝藥影響不大,對垂直孔和傾斜孔結閤裝藥有明顯影響;垂直孔和傾斜孔結閤裝藥高水位工況下形成的邊坡較緩,低水位工況下形成的爆堆較低,容易產生水突然湧入塢門的現象;綜閤分析,選擇傾斜孔裝藥爆破會得到更好的爆破效果。
이용DDA방법대선오위언적탁제폭파진행수치모의,분석경사공저수위、경사공고수위、수직공화경사공결합저수위이급수직공화경사공결합고수위4충불동방안하적폭파특성화규률。연구결과표명:재모공사1#、2#선오위언적탁제폭파과정중,수위고저대경사공장약영향불대,대수직공화경사공결합장약유명현영향;수직공화경사공결합장약고수위공황하형성적변파교완,저수위공황하형성적폭퇴교저,용역산생수돌연용입오문적현상;종합분석,선택경사공장약폭파회득도경호적폭파효과。
DDA method was used to simulate the demolition blasting of dock cofferdam .Blasting characteristics and rules in 4 different states , including inclined holes low water level , inclined holes high water level , vertical holes combined with inclined holes low water level and vertical holes combined with inclined holes high water level , were analyzed .The results show that in the demolition blasting process of 1# and 2# dock cofferdam of a company , the water level has little effect on the charge of slant holes , but has significant effect on the combination of vertical holes and inclined holes .Vertical holes combined with inclined holes form a gentler slope in high water level , and a lower rock pile in low water level .Both of them may result water pour into dock instantly .Under the comprehensive analysis , it shows that the charge of inclined holes will get better blasting results .