爆破振动速度预测安全保证系数的确定

梁书锋; 王宇涛; 刘殿书; 李奎; 李明慧

doi:10.11883/1001-1455(2015)05-0741-06

爆破振动速度预测安全保证系数的确定

doi: 10.11883/1001-1455(2015)05-0741-06

梁书锋¹,
王宇涛^{1, 2, ,},
刘殿书¹,
李奎¹,
李明慧¹

1.
中国矿业大学(北京)力学与建筑工程学院, 北京 100083
2.
保利民爆哈密有限公司, 新疆哈密 839200

基金项目: 教育部博士点基金项目(20100023110001)

详细信息

作者简介:
梁书锋(1982—), 男, 博士研究生

通讯作者:
王宇涛, w_yt2052@163.com

中图分类号: O382;TD235
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- 文章访问数: 2715
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- 被引次数: 0
出版历程
- 收稿日期: 2014-03-28
- 修回日期: 2014-06-26
- 刊出日期: 2015-10-10

Determination of safety coefficient for predicting blasting vibration velocity

1.
School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
2.
Poly Explosives Hami Co., Ltd, Hami 839200, Xinjiang, China

摘要

摘要: 基于爆破振动速度预测公式回归分析的基本原理，提出根据建筑物不同安全等级应选择一定的可靠性指标，并推导了预测爆破振动速度公式中所含安全保证系数的计算过程。为简化计算过程，又进一步提出了基于监测数据量、回归分析相关系数以及可靠性指标的关于安全保证系数计算的经验公式。经过大量监测数据验证了该经验公式的计算精度和可靠性均能满足工程实际需要，从而修正了萨氏公式预测精确度不够的缺陷，可为重要建筑物周边的安全爆破设计提供参考。
- 爆炸力学 /
- 安全保证系数 /
- 回归分析 /
- 爆破振动速度 /
- 可靠性指标
Abstract: The basic principle of regression analysis was considered for the prediction formula of blasting vibration velocity. On the basis of the considered principle, an opinion was put forward that certain reliability indexes should be chosen according to the safety levels of buildings. And the calculation process was deduced for the safety assurance coefficient included in the prediction formula of blasting vibration velocity. To simplify the calculation process, an empirical calculation formula was proposed for the safety assurance coefficient based on the parameters consisting of amount of monitoring data, correlation coefficient of regression analysis, and reliability index. The accuracy and reliability of the empirical calculation formula was verified by the monitoring data in actual projects. The investigated results show that the empirical calculation formula can meet the practical needs and it can make up the shortcoming that the accuracy of Sadov's formula is not enough. So the empirical calculation formula proposed can provide a reference for the design of safety blasting surrounding important buildings.
- mechanics of explosion /
- safety assurance coefficient /
- regression analysis /
- blasting vibration velocity /
- reliability index

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图 1 水平横向回归分析结果

Figure 1. Lateral regression analysis results

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图 2 水平纵向回归分析结果

Figure 2. Longitudinal regression analysis results

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图 3 垂直向回归分析结果

Figure 3. Vertical regression analysis results

下载: 全尺寸图片幻灯片

表 1 油库方向监测数据

Table 1. Data monitored along the direction from the quarry to the oil depot

测点编号	R/m	Q/kg	q_max/kg	v_{h, t}/(cm·s^-1)	v_{h, l}/(cm·s^-1)	v_v/(cm·s^-1)
1 2	335 340	6 420	350	0.48 0.46	0.41 0.46	0.64 0.57
3 4 5 6 7	339 387 431 465 495	2 872	288	0.31 0.24 0.22 0.17 0.31	0.38 0.29 0.20 0.16 0.09	0.40 0.22 0.33 0.22 0.22
8 9 10	297 307 242	2 040	264	0.40 0.32 0.91	0.22 0.27 0.29	0.84 0.49 1.01
11 12 13	288 300 232	2 408	276	0.51 0.45 0.88	0.43 0.40 0.76	0.59 0.36 0.99
14 15 16	364 363 327	2 832	386	0.55 0.52 0.56	0.25 0.31 0.52	0.69 0.51 0.73
17 18	275 287	3 168	280	0.70 0.53	0.46 0.37	0.79 0.59
19 20	401 410	7 000	387	0.39 0.25	0.38 0.31	0.55 0.37
21	181	2 848	183	0.54	0.51	0.62
22 23	173 196	3 720	186	0.63 0.43	0.61 0.41	0.64 0.59
24 25 26 27 28	309 324 321 347 364	4 928	264	0.48 0.30 0.30 0.28 0.26	0.34 0.32 0.23 0.26 0.21	0.44 0.31 0.52 0.30 0.31

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表 2 计算结果

Table 2. Calculation results

方向	K	α	r	γ_{s, r}		γ_{s, e}
方向	K	α	r	1-β=95%	1-β=99%	1-β=95%	1-β=99%
水平纵向	130.4	1.45	0.77	1.75	2.15	1.87	2.34
水平横向	152.9	1.59	0.79	1.73	2.12	1.85	2.29
垂直向	179.4	1.53	0.74	1.90	2.39	1.99	2.54

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参考文献(9)

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