[1]宿利平①,洪政②,谷桂丽①,等.隧道掘进水封光面爆破装药结构的优化试验研究[J].爆破器材,2023,52(05):44-49.[doi:10.3969/j.issn.1001-8352.2023.05.008]
　SU Liping,HONG Zheng,GU Guili,et al.Experimental Study on Optimization of Charge Structure in Water Sealed Smooth Blasting of Tunnel Excavation[J].EXPLOSIVE MATERIALS,2023,52(05):44-49.[doi:10.3969/j.issn.1001-8352.2023.05.008]
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隧道掘进水封光面爆破装药结构的优化试验研究()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
52
期数:
2023年05
页码:
44-49
栏目:
爆破技术
出版日期:
2023-10-13

文章信息/Info

Title:
Experimental Study on Optimization of Charge Structure in Water Sealed Smooth Blasting of Tunnel Excavation
文章编号:
5784
作者:
宿利平①; 洪政②; 谷桂丽①; 伏永贵①; 张小军②; 高文学②
①北京市政路桥股份有限公司（北京，100045）
②北京工业大学城市建设学部（北京，100124）
Author(s):
SU Liping①;  HONG Zheng②;  GU Guili①;  FU Yonggui①;  ZHANG Xiaojun②;  GAO Wenxue②
①Beijing Municipal Road and Bridge Co., Ltd. (Beijing, 100045）
②Faculty of Urban Construction, Beijing University of Technology (Beijing, 100124）
关键词:
隧道掘进; 水封光面爆破; 正交试验; 参数优化
Keywords:
tunnel excavation;  water sealed smooth blasting;  orthogonal test;  parameter optimization
分类号:
TJ510.3; TD235.4
DOI:
10.3969/j.issn.1001-8352.2023.05.008
文献标志码:
A
摘要:
为减少隧道掘进爆破时出现炸药能量利用率低、粉尘浓度高、超挖或欠挖严重等问题，在109国道新线高速公路小龙门隧道开挖过程中，开展水封光面爆破技术试验研究。以炮孔上部、底部水袋的长度与炮泥堵塞长度为试验因素，以平均半孔率、平均炮孔利用率与粉尘浓度降低率为爆破效果衡量指标进行正交试验。研究结果表明：影响平均半孔率和粉尘浓度降低率的因素依次为炮孔上部水袋长度、炮孔底部水袋长度、炮泥堵塞长度；而影响平均炮孔利用率的因素依次为炮泥堵塞长度、炮孔上部水袋长度、炮孔底部水袋长度。在现场试验条件下，确定了水封光面爆破中较优的装药结构参数，即：炮孔上部水袋长度30 cm、炮孔底部水袋长度20 cm、炮泥堵塞长度30 cm。取优化后的装药结构参数进行试验发现，相比常规光面爆破,平均半孔率、平均炮孔利用率和粉尘浓度降低率分别提高了6.3%、7.1%、7.6%。优化后的水封光面爆破装药结构具有较好的爆破效果。
Abstract:
In order to reduce the problems of low utilization rate of explosives, high concentration of dust and obvious phenomenon of over-excavation and under-excavation in tunneling excavation blasting, an experimental study on water sealed smooth blasting technology was carried out in the excavation process of Xiaolongmen Tunnel on New Line Expressway of National Highway 109. Orthogonal test was carried out. The length of water bag at the upper and bottom of the blast hole, and the length of blast mud blockage were taken as test factors. The average half-hole rate, the average utilization rate of blast hole and the reduction rate of dust were taken as evaluation indexes of blasting effect. The test results show that the factors affecting the average half-hole rate and dust reduction rate are the length of water bag at the upper part of the blast hole, the length of water bag at the bottom of the blast hole, and the length of blast mud blockage. The factors affecting the average utilization rate of blast holes are the length of sludge blockage, the length of water bags at the upper and bottom of blast holes in turn. The optimum charge structure parameters of water sealed smooth blasting were determined under the field test conditions. The length of water bag at the upper part of the blast hole is 30 cm, the length of water bag at the bottom of the blast hole is 20 cm, and the length of blast mud blockage is 30 cm. Compared with the charge structure of conventional smooth blasting, the average half-hole ratio, the average utilization ratio of blast hole and dust reduction ratio increase by 6.3%, 7.1% and 7.6% respectively after optimization. The optimized charge structure of water sealed smooth blasting has good blasting outcomes.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2021-10-29
基金项目：爆破工程湖北省重点实验室开放基金（BL2021-23）
第一作者：宿利平（1980－），男，工程师，主要从事道路与桥梁工程技术研究。E-mail：82479211@qq.com
更新日期/Last Update: 2023-10-11