新疆铁路沿线最强风区大风特征对比分析

doi:10.3969/j.issn.1673-503X.2020.05.009

Abstract

Abstract:

Based on the hourly wind speed data of 32 monitoring stations along Lanzhou-Xinjiang railway from 2015 to 2018, the gale characteristics in the two strongest wind region of Lanzhou-Xinjiang railway i.e.the 100-kilometer wind area and the pre-hundred kilometer wind area were comparatively analyzed through investigating the average number of gale days, duration of gale, the contribution rate of different wind speed, and the variation of time scales and geographical distribution of strong wind by means of statistical methods and spatial analysis.The results show that the extreme gale whose rank is greater than 11 is more likely to occur in the pre-hundred kilometer wind zone than in the hundred kilometer wind zone, which indicates some characteristics in the pre-hundred kilometer wind area under the influence of its downstream terrain relative to in hundred kilometer wind area.Specifically, in the pre-hundred kilometer wind area, the mean hourly wind speed is bigger in the nighttime (20:00 to 08:00 the following day) than in the daytime (08:00 to 20:00), and its variability in spatial distribution is larger, and the dominant wind direction is basically perpendicular to Lanzhou-Xinjiang railway, which leads to strong transversal wind.This paper can fill in the gaps of exploration of weather patterns in the pre-hundred kilometer wind area, and provide the basis for the analysis of change rules of gale in special regions, the fine forecast of hourly gale in the key regions, special experimental study and the determination of the warning threshold of wind-induced disaster.

Key words: Strong wind region, Strong wind, Fine weather forecast

CLC Number:

P425.5

Ping JIANG, Xin-min PAN, Jun-mei XUE, Yan-ping SHA. Comparative analysis of the gale characteristics in the strongest wind area along Lanzhou-Xinjiang railway[J]. Journal of Meteorology and Environment, 2020, 36(5): 69-75.

Figures/Tables 12

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References 19

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百里风区	铁路公里标	纬度/°	经度/°	前百里风区	铁路公里标	纬度/°	经度/°
小草湖西2	K1596+150	43.17	91.09	东湖沟	K4+900	43.15	88.82
小草湖西1	K1586+600	43.17	91.16	墩果勒特大桥	K10+056	43.15	88.75
了敦	K1436+550	43.13	92.26	头道河特大桥	K13+060	43.15	88.72
红层	K1455+700	43.16	92.03	铁泉特大桥	K15+270	3.14	88.69
红层西1	K1457+400	43.16	92.01	三个泉特大桥	K20+940	43.13	88.63
红层西2	K1462+230	43.16	91.95	珍珠泉东	K25+950	43.11	88.58
红柳	K1468+430	43.17	91.88	珍珠泉西	K26+850	43.10	88.56
十三间房	K1476+800	43.19	91.78	白杨河	K46+980	43.09	88.54
十三间房西	K1480+900	43.21	91.74	红山渠东	K54+620	43.08	88.42
猛进东	K1484+000	43.20	91.70	红山渠西	K57+120	43.08	88.39
猛进	K1489+160	43.17	91.65	托克逊东	K61+017	43.07	88.32
大步东	K1491+500	43.16	91.62	托克逊西	K69+180	43.04	88.26
大步	K1494+310	43.15	91.59	小垭	K79+400	43.02	88.17
了墩西	K1499+300	43.13	92.21	望布东	K89+760	42.98	88.06
红台	K1511+580	43.14	91.39	布尔加依	K102+471	42.89	87.99
				鱼儿沟	K113+590	42.84	87.89
				吐鲁番西	K1796+000	43.15	88.85

项目	风向/°	风速/(m·s^-1)
测量范围	0—360	0—60
准确度	±5	±(0.5+0.05V)

风级	平均大风日数/d		平均历时/h		历时贡献率/(%)
风级	百里风区	前百里风区	百里风区	前百里风区	百里风区	前百里风区
8级	41.7	38.2	686.4	585.9	34.57	35.80
9级	41.8	38.0	546.4	487.9	26.17	26.34
10级	37.0	34.3	391.3	361.8	17.95	17.39
11级	29.9	29.2	286.8	261.9	12.63	11.01
≥12级	33.7	37.7	212.8	267.3	8.69	9.45
≥8级(总计)	184.1	177.4	2123.7	1964.8	-	-

风区	测风站	年度				平均值
风区	测风站	2015	2016	2017	2018
百里风区	大步	41.4	46.2	42.0	45.4		43.8
	大步东	44.1	37.5	36.2	38.2	39.0
	红层	43.0	42.5	46.4	48.8	45.2
	红层西1	39.0	42.5	44.2	49.6	43.8
	红层西2	38.5	41.2	41.4	46.3	41.9
	红柳	45.6	52.1	50.2	51.9	50.0
	红台	37.5	40.1	42.0	42.9	40.6
	了墩	37.6	42.3	35.5	42.7	39.5
	了墩西	46.6	50.2	52.0	51.7	50.1
	猛进	46.4	48.7	47.7	51.4	48.6
	猛进东	43.6	44.6	44.3	46.3	44.7
	十三间房	46.0	47.2	45.3	49.0	46.9
	十三间房西	46.4	50.1	49.0	49.8	48.8
	小草湖西1	36.2	41.7	42.7	48.7	42.3
	小草湖西2	43.1	38.1	39.2	42.9	40.8
前百里风区	白杨河	48.0	53.9	46.7	51.9	50.1
	布尔加依	37.0	42.4	37.6	35.3	38.1
	东湖沟	36.4	47.6	39.9	41.1	41.3
	墩果勒大桥	33.8	47.3	40.6	50.0	42.9
	红山渠东	54.4	60.7	60.5	61.6	59.3
	红山渠西	42.9	49.3	47.1	50.0	47.3
	三个泉特大桥	57.3	57.7	61.3	59.4	58.9
	铁泉特大桥	50.4	61.2	55.1	54.7	55.4
	头道河特大桥	39.6	47.7	42.9	46.6	44.2
	吐鲁番西	33.7	39.2	38.0	35.5	36.6
	托克逊东	39.3	49.7	45.2	51.8	46.5
	托克逊西	39.6	51.4	41.9	46.3	44.8
	望布东	37.5	48.6	39.2	40.9	41.6
	小垭	35.1	39.1	35.6	38.7	37.1
	鱼儿沟	30.1	29.9	30.8	35.8	31.7
	珍珠泉东	51.5	52.6	53.2	52.5	52.5
	珍珠泉西	42.2	45.8	43.4	42.2	43.4

环境风速/ (m·s^-1)	20≤S＜25	25≤S＜30	30≤S＜35	S≥35
运行标准	限速200	限速160	限速80	停运

Comparative analysis of the gale characteristics in the strongest wind area along Lanzhou-Xinjiang railway

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百里风区			前百里风区
环境风速/(m·s^-1)	次数/次	主导风向	环境风速/(m·s^-1)	次数/次	主导风向
20 ≤S＜25	45348	NNW	20 ≤S＜25	45792	NNW
25 ≤S＜30	27799	NNW	25 ≤S＜30	29815	WNW
30 ≤S＜35	14889	NW	30 ≤S＜35	15451	NNW
S≥35	7823	N	S≥35	13113	NW

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