| 三台涪江大桥控爆拆除总体方案设计 |
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| 作者单位： | ;1.江西省公安厅治安警察总队;2.长沙矿山研究院有限责任公司;3.江西国泰五洲爆破工程有限公司;4.宜春钽铌矿 |
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| 摘 要： | 通过建立完善的力学模型,分析保证斜拉桥安全坍塌时应控制的关键构件的运动轨迹。据此提出完成这一设计思想应采取深孔爆破、水压爆破及浅眼爆破相结合的最佳方案。同时,采用计算机动态仿真技术对大桥的爆破过程进行全时段的爆破坍塌仿真,以此来检验完善系统设计的可靠性和安全性。
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| 关 键 词： | 爆破拆除 斜拉桥 动态仿真 深孔爆破 水压爆破 |
Engineering practice and technical discussion on blasting demolition of cracked brick chimney |
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| Affiliation: | ,Jiangxi Public Security Bureau Public Security Police Corps,The Limited Corporation of Changsha Mine Research Institution,Jiangxi Guotai Civil Explosive Group Inc.Corporation Profile,Tantalum-niobium Ores of Yichun |
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| Abstract: | Combined with a blasting demolition project with a chimney of 68 mhigh and the bottom height of 1.0-32.0 m with obvious symmetrical through cracks in a brick factory,the blasting demolition scheme,notch design and blasting parameters selection are introduced in detail.The reason why the chimney collapsed in the blasting process is different from the conventional chimney blasting is analyzed in depth.It is pointed out that the chimney with cracks at every interval of 1.0 mis hoop-bound by iron sheet with a width of 2.0 m or hoop-bound by bamboo springboard and iron wire to reinforce the chimney so as to form a whole.Change the position of the chimney incision and select the appropriate support location and size,technical measures such as reducing the acceleration of the chimney and the asymmetric destruction of the hinge during the sitting process.At the same time,the technical measures of this blasting effect are discussed,and suggestions for improving the blasting effect are put forward,so as to provide references for similar projects. |
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| Keywords: | cracked brick chimney demolition blasting collapse forms hoop-bound |
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