基于图像识别的碎屑流颗粒分布特征及碎屑流与房屋相互作用探究

彭双麒; 柯灵; 郑体; 徐继忠

doi:10.19509/j.cnki.dzkq.2021.0622

基于图像识别的碎屑流颗粒分布特征及碎屑流与房屋相互作用探究

doi: 10.19509/j.cnki.dzkq.2021.0622

详细信息

作者简介:
彭双麒(1995-), 男, 助理工程师, 主要从事岩土工程与地基基础相关研究工作。E-mail: 2694253535@qq.com

中图分类号: X43
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- 被引次数: 0
出版历程
- 收稿日期: 2021-01-20

Particle distribution characteristics of rock avalanche and the interaction between rock avalanche and houses based on image recognition

摘要

摘要: 由于崩滑-碎屑流具有高隐蔽性、发生时间短暂以及较低的可预见性，较难直观观测崩滑-碎屑流发生的过程。为了对碎屑动力特性及对房屋的破坏情况进行研究，拟对碎屑流堆积体及其粒径分布进行分析。以普洒村崩塌-碎屑流为例，使用PCAS系统对碎屑流堆积体图像进行颗粒识别、统计，并通过量纲分析法，分析堆积体颗粒与房屋破坏之间的定量联系。分析结果发现：与现场筛分统计相比，图像识别堆积体颗粒的方法得到的数据更全面、详细，并且能节省大量的人力、物力资源。另外，对房屋与碎屑流之间的相互作用进行了探究，发现房屋对碎屑流颗粒有"拦粗排细"的作用。同时，利用图像识别得到的颗粒粒径数据对推导出房屋破坏的判别公式，判别效果较好，能够在地质灾害防治、预测领域发挥一定作用。
- 崩滑-碎屑流 /
- 堆积体 /
- 图像识别 /
- 颗粒粒径 /
- 房屋破坏
Abstract: Due to the high concealment, short-lived time and low predictability of the rock avalanche, it is difficult to visually observe the process of it. In order to study the dynamic characteristics and the catastrophicto houses of rock avalanche, this paper analyzes the rock avalanche congeries and its particle size distribution.Taking the rock avalanche in Pusa Village as an example, this paper uses the PCAS system to identify congeries particles by image.And through the dimensional analysis method, the quantitative relationship between the congeries of particles and the damage of the building is analyzed.The author found that: compared with on-site screening statistics, the data obtained by the method of image recognition of congeries particles is more comprehensive and detailed, and can save a lot of manpower and material resources.In addition, the interaction between the house and the rock avalanche is explored, and it is found that the house has the effect of "blocking coarse and fine discharge" on the rock avalanche particles. At the same time, using the particle size data obtained by image recognition to derive the discrimination formula for building damage, the discriminating effect is good, laying the foundation for follow-up research.
- slump rock avalanche /
- congeries /
- image identification /
- particle size /
- house damage

HTML全文

图 1 普洒村崩塌堆积区全貌

Figure 1. Whole picture of the collapse congeries of Pusa Village

下载: 全尺寸图片幻灯片

图 2 普洒村崩塌堆积体工程地质剖面图

T₁y.下三叠统夜郎组；P₂c-d.上二叠统长兴组-大隆组；P₂l.上二叠统龙潭组

Figure 2. Engineering geological section of collapse congerie in Pusa Village

下载: 全尺寸图片幻灯片

图 3 PCAS系统图像识别堆积体粒径过程及结果

Figure 3. Image recognition process and results of particle size of PCAS system

下载: 全尺寸图片幻灯片

图 4 崩塌堆积分区示意图

An/Bn/Cn. 崩塌堆积分区代号

Figure 4. Partition diagram of the collapse congeries body

下载: 全尺寸图片幻灯片

图 5 堆积体纵向区域粒径数统计累计曲线

Figure 5. Cumulative curve of particle size statistics in longitudinal area of congeries

下载: 全尺寸图片幻灯片

图 6 垂直于主滑方向区域颗粒粒径累计曲线

Figure 6. Aggregate curve of particle size perpendicular to the main sliding direction

下载: 全尺寸图片幻灯片

图 7 各区域不同粒径范围所占比例

Figure 7. Proportion of different particle size grades in each area

下载: 全尺寸图片幻灯片

图 8 房屋平面位置分布图

Figure 8. Location of the house

下载: 全尺寸图片幻灯片

图 9 垂直于主滑方向各区域不同粒径范围颗粒所占比例

堆积后部区对应B1、A2、C1区；堆积中部区对应B2、A5、C2区；堆积前缘区对应B3、A8、C3区

Figure 9. Proportion of different particle size grades in each area perpendicular to the main sliding direction

下载: 全尺寸图片幻灯片

图 10 普洒村崩塌碎屑流房屋破坏的判据图

Figure 10. Criterion of the destruction of houses in the rock avalanche in Pusa Village

下载: 全尺寸图片幻灯片

表 1 破坏房屋距崩塌源中部的水平距离以及距崩塌物源高度

Table 1. Horizontal distance of the damaged house from the middle of the collapse source and the height of the damaged house from collapse source

房屋编号	运动距离L/m	高差ΔH/m	房屋编号	运动距离L/m	高差ΔH/m	房屋编号	运动距离L/m	高差ΔH/m
1	613.16	249	16	566.45	242	31	624.43	260
2	645.78	249	17	547.55	240	32	718.49	272
3	678.98	254	18	535.23	241	33	703.67	271
4	682.24	254	19	522.37	238	34	685.68	270
5	658.27	254	20	587.46	249	35	694.40	271
6	639.84	253	21	581.23	249	36	681.21	270
7	641.44	254	22	598.17	251	37	659.85	268
8	708.25	257	23	531.15	239	38	769.52	278
9	558.77	243	24	603.83	250	39	749.19	276
10	574.57	245	25	537.39	246	40	700.61	271
11	592.31	247	26	530.11	246	41	530.47	240
12	582.02	246	27	517.92	246	42	500.80	237
13	559.99	242	28	517.11	244	43	523.11	238
14	602.69	251	29	599.63	256	44	663.77	268
15	578.72	242	30	619.62	258	45	459.26	241

下载: 导出CSV

表 2 普洒村崩塌冲毁房屋判别结果

Table 2. Discriminating results of the houses damaged by collapse in Pusa Village

房屋编号	判别结果F	房屋编号	判别结果F	房屋编号	判别结果F	房屋编号	判别结果F	房屋编号	判别结果F
1	1.27	10	1.42	19	1.67	28	1.75	37	1.18
2	1.14	11	1.35	20	1.38	29	1.36	38	0.9
3	1.05	12	1.39	21	1.41	30	1.29	39	0.94
4	1.04	13	1.48	22	1.34	31	1.28	40	1.06
5	1.12	14	1.32	23	1.62	32	1.01	41	1.63
6	1.18	15	1.38	24	1.31	33	1.05	42	1.81
7	1.18	16	1.44	25	1.63	34	1.1	43	1.66
8	0.98	17	1.53	26	1.68	35	1.08	44	1.16
9	1.49	18	1.61	27	1.75	36	1.11	45	2.19

下载: 导出CSV

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