工程爆破

2016, v.22(06) 79-82

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钢铁厂冶炼炉残铁的裸露爆破
Exposure blasting of residual iron in smelting furnace of steel

赵文;张智宇;黄永辉;
ZHAO Wen;ZHANG Zhi-yu;HUANG Yong-hui;Faculty of Land and Resource Engineering,Kunming University of Science and Technology;Institute of New Blasting Technology and Application,Kunming University of Science and Technology;Faculty of Electric Power Engineering,Kunming University of Science and Technology;

摘要(Abstract):

为尽早完成高台裸露残铁的清除工程,采用爆破技术进行清除。通过局部试爆选择合理孔网参数,使用高精度导爆管雷管逐孔起爆网路,架设拦挡设施,取得了较好的爆破效果。爆破后,块度适中,碎块没有散落也没有飞出;厂房内实测振速0.76cm/s,小于安全允许振速,振动能量主要分布在20Hz以上高频部分高于建构(筑)物自振频率,未对周围建(构)筑物产生不良影响;施工用时短,为钢铁厂技改工程的提早竣工和钢厂正常生产的恢复争取了时间。残铁硬度高,钻孔速度慢,钻头、钎杆损耗大,但具有一定的可爆性,单耗仅为0.4kg/m3。可为类似工程的施工提供参考。
To complete the removal engineering of bared residual iron on the high platform as soon as possible,blasting technique was adopted.With partial test blasting,reasonable hole pattern parameters were selected and high-precision detonators were used to blast hole by hole.Additionally,blocking facilities were built and excellent blasting effect was obtained.After the blasting,the lumpiness was moderate and the fragments were not scattered or burst out.The actually measured vibration velocity was0.76cm/s in the plant,and it was smaller than the safety permissible vibration velocity.The vibration energy was distributed on high frequency part more than 20 Hz,and it was higher than the natural vibration frequency of the building(structure),which would not generate harmful effect on surrounding buildings(structures).Furthermore,the construction time was short.It strived time for advanced completion of technical transformation project of steel plant and recovery of normal production of steel plant.Though the residual iron hardness was high,drilling speed was slow,drill and drill rod loss were large,it had certain explosibility.Unit consumption of the project was only 0.4kg/m3.It could provide a reference for similar projects.

关键词(KeyWords): 残铁;爆破拆除;逐孔起爆;飞散物
Residual iron;Blasting demolition;Hole-by-hole initiation;Flying objects

Abstract:

Keywords:

基金项目(Foundation): 云南省应用基础研究资助项目(2013FZ036)

作者(Authors): 赵文;张智宇;黄永辉;
ZHAO Wen;ZHANG Zhi-yu;HUANG Yong-hui;Faculty of Land and Resource Engineering,Kunming University of Science and Technology;Institute of New Blasting Technology and Application,Kunming University of Science and Technology;Faculty of Electric Power Engineering,Kunming University of Science and Technology;

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