掏槽方式对光面爆破效果的影响研究

发布时间：2018-06-24 10:54

本文选题：光面爆破 + 直眼掏槽　；参考：《科学技术与工程》2017年19期

【摘要】：基于光面爆破施工方法,设计了甘肃北山坑探设施项目光面爆破的爆破参数。进而,着重研究了掌子面掏槽方式对光面爆破效果的影响。针对相同的地质条件、围岩及爆破耗材条件下,分别设计了直眼掏槽、单楔形掏槽、双楔形掏槽共计三种掏槽方式。进一步地实施了在不同掏槽方式下光面爆破的施工,获得了直眼掏槽方式更有利于爆破的硐室成型;而单楔形和双楔形掏槽更有利于岩石的破碎及岩渣抛掷。同时,需指出的是,钻爆施工涵盖多种不同的爆破参数,影响因素众多,此爆破试验获取的爆破数据仅仅是对不同掏槽方式的初步探索。研究可对后续工程开挖提供相应的试验数据与理论支撑,其对于深部地下工程的爆破开挖及高放废物的深地质处置,有一定的理论指导意义。
[Abstract]:Based on smooth blasting construction method, the blasting parameters of smooth blasting for Beishan Pit Exploration Facility Project in Gansu Province are designed. Furthermore, the influence of cutting mode on smooth blasting effect is studied. In view of the same geological conditions, surrounding rock and blasting materials, three cutting modes, straight hole cutting, single wedge cutting and double wedge cutting, were designed respectively. The construction of smooth blasting under different cutting modes is further carried out and the straight hole cutting is obtained which is more favorable to the chamber formation of blasting while the single wedge and double wedge are more favorable to the breakage of rock and the throwing of rock slag. At the same time, it should be pointed out that drilling and blasting construction covers many different blasting parameters, and there are many influencing factors. The blasting data obtained by this blasting test is only a preliminary exploration of different cutting ways. The research can provide the corresponding experimental data and theoretical support for the subsequent excavation, which has certain theoretical guiding significance for the blasting excavation of deep underground engineering and the deep geological disposal of high-level radioactive waste.
【作者单位】：核工业北京地质研究院;中核高放废物地质处置评价技术重点试验室;清华大学水沙科学与水利水电工程国家重点试验室;北京科技大学土木与环境工程学院;
【基金】：国家自然科学基金(41202207)资助
【分类号】：TD235.374;TD236

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