Abstract：In order to explore the formation cause of the debris flow in Zhouqu County of Gansu Province, and protect the safety of people's lives and property, the authors took the detris flow in Shuiquangou watershed of Zhouqu County as the research object. The regional survey, ground investigation and underground exploration methods were used to ascertain the characteristics of debris flow and analyze its formation cause, on the basis of geological environment conditions investigation and analyzation in the study area. Besides, the dangerous area of the debris flow was divided. The results show that the loose slope structure and steep slope could induce debris flow under the action of precipitation, earthquake, engineering activity or gravity. The design gravity of the debris flow in Shuiquangou is 18.7 kN/m3, and the annual discharge is 1.24×104 m3/a. The maximum discharge of the debris flow is 0.66×104 m3 and the maximum pressure of the debris flow is 190.22 kN, with maximum climbing height of 6.2 m. Extreme dangerous area is distributed from Shuiquangou estuary to Bailongjiang river bank, with the area of 0.13 km2, accounting for 9.8% of the total area, which has worst effects on Shuiquanxincun, 313 provincial road and Fengdie area. It is suggested that two gravity-grouted Shigufang dams should be arranged in the middle and lower reaches of the main ditch, and one should be arranged in the alluvial fan ditch, with a 894-meter-long drainage dam. This research could provide some reference for the debris flow prevention in Gansu Province.
丁旭强. 舟曲县水泉沟流域泥石流勘察及成因分析[J]. 中国地质调查, 2024, 11(2): 90-96.
DING Xuqiang. Investigation and cause analysis of the debris flow in Shuiquangou watershed of Zhouqu County. , 2024, 11(2): 90-96.
[1] 崔鹏,朱新华,张建强.梯级滑坡坝体溃坝引起的天然泥石流的尺度放大[J].地貌学,2013,182. Cui P,Zhu X H,Zhang J Q.Scale amplification of natural debris flows caused by cascading landslide dam failures[J].Geomorphology,2013,182. [2] 向灵芝,杨为民,范玮佳.典型地震扰动区泥石流堆积体工程特性及其启动机制[J].南水北调与水利科技,2016,14(6):176-182. Xiang L Z,Yang W M,Fan W J.Discussion on engineering characteristics of debris flow deposits and its initiating mechanism in typical earthquake disturbance area[J].South-to-North Water Transfers and Water Science & Technology,2016,14(6):176-182. [3] 狄潇泓,吉惠敏,肖玮,等.“8.8”舟曲特大泥石流天气背景分析[J].安徽农业科学,2013,41(12):5448-5452. Di X H,Ji H M,Xiao W,et al.Analysis of weather background of “8.8” Jumbo debris flow at Zhouqu[J].Journal of Anhui Agricultural Sciences,2013,41(12):5448-5452. [4] 李军,胡向德,黎志恒,等.舟曲三眼峪沟特大泥石流形成及径流特征分析[J].甘肃地质,2013,22(3):58-63. Li J,Hu X D,Li Z H,et al.Analysis on development of debris flow in Sanyanyu gully[J].Gansu Geology,2013,22(3):58-63. [5] 金凌燕,张茂省,王进聪,等.舟曲罗家峪“8.8”特大泥石流特征与成因[J].西北地质,2011,44(3):71-79. Jin L Y,Zhang M S,Wang J C,et al.The characteristics and forming reasons of “8.8” debris flow at Luo jiayu Gulley,Zhou-qu[J].Northwestern Geology,2011,44(3):71-79. [6] 张旭光,张泽林,王志强,等.甘肃舟曲县庙儿沟泥石流形成条件及运动特征研究[J].甘肃地质,2012,21(1):54-58. Zhang X G,Zhang Z L,Wang Z Q,et al.Formation conditions and dynamic characteristics of Miao'ergou debris flow in Zhouqu county[J].Gansu Geology,2012,21(1):54-58. [7] 赵艳萍. 白龙江流域泥石流分布规律及其影响因素研究[D].兰州:兰州大学,2013. Zhao Y P.Study on the Regularity of Debris Flow Distribution and Influence Factors in Bailong River Basin[D].Lanzhou:Lanzhou University,2013. [8] 卓雅. 舟曲县泥石流特征与防治现状研究[D].兰州:兰州大学,2014. Zhuo Y.Study on the Characteristics and the Prevention Situation of Debris Flow in Zhouqu County[D].Lanzhou:Lanzhou University,2014. [9] 杨梦诗,周玉杉,许兵.利用PALSAR和QuickBird影像研究舟曲泥石流[J].矿山测量,2012(3):34-36,39. Yang M S,Zhou Y S,Xu B.Study on Zhouqu debris flow using PALSAR and QuickBird images[J].Mine Surveying,2012(3):34-36,39. [10] 李瑞冬,马宗源,胡向德.舟曲泥石流桩林拦挡结构抗冲压极限分析[J].甘肃地质,2011,20(2):60-65. Li R D,Ma Z Y,Hu X D.Limit analysis of blocking structure of pile group for Zhouqu debris flow[J].Gansu Geology,2011,20(2):60-65. [11] 杨月巧,胡俊锋,郗蒙浩.基于灰色关联法的舟曲泥石流灾害影响因素分析[J].自然灾害学报,2011,20(3):139-144. Yang Y Q,Hu J F,Xi M H.Analysis of influence factors of debris flow disaster in Zhouqu based on grey relevance method[J].Journal of Natural Disasters,2011,20(3):139-144. [12] 张成勇. 舟曲泥石流地质灾害形成原因分析[J].甘肃水利水电技术,2010,46(12):44-46. Zhang C Y.Cause analysis of debris flow hazard in Zhouqu[J].Gansu Water Conservancy and Hydropower Technology,2010,46(12):44-46. [13] 戚小龙. 甘肃省水文图集法设计暴雨洪水误差分析[J].地下水,2018,40(1):172-174. Qi X L.Error analysis of designing storm flood by hydrological atlas method in Gansu province[J].Ground Water,2018,40(1):172-174. [14] 中国地质调查局.DZ/T 0239—2004 泥石流灾害防治工程设计规范[S].2004. China Geological Survey.DZ/T0239—2004 Code for Design of Debris Flow Control Engineering[S].2004. [15] 中国地质调查局.DZ/T 0220—2006 泥石流灾害防治工程勘查规范[S].2006. China Geological Survey.DZ/T 0220—2006 Specification of Geological Investigation for Debris Flow Stabilization[S].2006. [16] 张新江,王广辉.浅议某泥石流沟现状易发程度评估[J].地下水,2012,34(4):197-198,201. Zhang X J,Wang G H.View the West Lake[J].Ground Water,2012,34(4):197-198,201. [17] 梅锦山,侯传河,李小燕,等.GB 50201—2014 防洪标准[S].北京:中国计划出版社,2015. Mei J S,Hou C H,Li X Y,et al.GB 50201—2014 Standards for Flood Control[S].Beijing:China Planning Press,2015.
2024, Vol. 11 
