| 三峡临时船闸及升船机三角岩体开挖双台阶控制爆破技术 |
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| 作者单位： | ;1.中国葛洲坝集团三峡实业公司!湖北宜昌443002 |
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| 摘 要： | 针对临时船闸及升船机三角岩体开挖中的具体困难 ,经综合研究 ,选定了双台阶光爆的深孔微差爆破方案。本文以三角体上层的开挖为例 ,介绍了各种爆破方式主要参数的选定、装药和堵塞技术、起爆网络设计以及爆破安全措施等。双台阶光爆的深孔微差爆破的成功应用 ,是露天深孔爆破技术的一项发展
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| 关 键 词： | 岩体开挖 深孔控制爆破 光面爆破 |
DOUBLE-BENCH CONTROLLED BLASTING TECHNOLOGY FOR EXCAVATION OF TRIANGULAR ROCK MASS OF TEMPORARY SHIPLOCK AND SHIP LIFT IN THE THREE GORGES PROJECT |
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| Affiliation: | ,RUAN Ding yan (The Three Gorges Industrial Company of Gezhouba (Group) Corp. Yichang, Hubei 443002, China) |
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| Abstract: | In light of the concrete difficults existed in excavation of the triangular rock mass of temporary shiplock and ship lift, a deep hole millisecond blasting scheme with double bench smooth blasting is selected through comprehensive study. In this paper, determination of main parameters of various blasting modes, charging and stemming process, design of initiating network, blasting safety precautions and so on are introduced by taking the excavation of upperlayer triangular rock mass as an example. Successful application of the deep hole millisecond blasting with double bench smooth blasting is a development to deep hole blasting technologies for open pits. |
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| Keywords: | Rock mass excavation Deep hole controlled blasting Smooth blasting |
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