薛克军;胡坤伦;杨辉;夏治园;韩体飞;李毅;宋凡平;
XUE Ke-jun;HU Kun-lun;YANG Hui;XIA Zhi-yuan;HAN Ti-fei;LI Yi;SONG Fan-ping;School of Chemical Engineering, Anhui University of Science and Technology;Corporation of Lei Ming Ke-hua;

• 1:安徽理工大学化学工程学院
• 2:安徽雷鸣科化股份有限公司

摘要(Abstract)：

为拆除复杂环境下108 m高造粒塔,在仔细分析造粒塔周围环境和拆除技术难点的基础上,结合数值模拟验证了方案的可行性,采用定向控制爆破的方法成功拆除该造粒塔。结果表明:数值模拟计算出造粒塔顶端节点在竖直方向(z)和倒塌方向(y)的位移均为108 m,竖直下落的速度未发生突跃,非倒塌方向(x)位移几乎为0,造粒塔倒塌充分,倒塌过程中未出现偏移和后坐;采用梯形爆破切口,切口圆心角为216°,切口高度为7 m,北偏西6°定向倾倒的爆破方案拆除效果良好;起爆后,造粒塔按预定方向顺利倒塌,且实际倒塌过程和模拟倒塌过程基本一致,本次采用的数值模型可对同类工程实践起到一定的指导作用。
In order to dismantle the 108 m high prilling tower in a complex environment, the surrounding environment of the prilling tower and the technical difficulties were carefully analyzed, and the method of directional controlled blasting was decided for demolition after the verification by the numerical simulation. The prilling tower was successfully demolished. The results show that the numerical simulation calculated that the displacements of the top node of the prilling tower in the vertical direction(z) and the collapse direction(y) are both 108 m, the vertical falling speed does not make a sudden jump, and the displacement in the non-collapsing direction(x) is almost 0. The prilling tower collapsed sufficiently with no backward collapse occurred during the collapse. The trapezoidal blasting cut is adopted, the central angle of the incision is 216°, and the cut height is 7 m. The blasting plan of directional dumping in the direction of 6°north to west brings good demolition effect. After the detonation, the prilling tower collapsed smoothly in the predetermined direction, and the actual collapse process was basically the same as the simulated collapse process, the numerical model played a certain guiding role in engineering practice.

关键词(KeyWords)： 拆除爆破;造粒塔;定向倒塌;安全校核;数值模拟
demolition blasting;prilling tower;directional collapse;safety check;numerical simulation

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金青年科学基金资助项目(51604009)

作者(Authors): 薛克军;胡坤伦;杨辉;夏治园;韩体飞;李毅;宋凡平;
XUE Ke-jun;HU Kun-lun;YANG Hui;XIA Zhi-yuan;HAN Ti-fei;LI Yi;SONG Fan-ping;School of Chemical Engineering, Anhui University of Science and Technology;Corporation of Lei Ming Ke-hua;

DOI: 10.19931/j.EB.20200206

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