长江科学院院报 ›› 2012, Vol. 29 ›› Issue (5): 16-20.

• 工程安全与灾害防治 • 上一篇    下一篇

“水石分离”在泥石流灾害防治工程中的应用

文联勇1,2, 谢宇2, 李东2, 王勇2   

  1. 1. 成都理工大学 环境与土木工程学院,成都610059; 2.四川省地质工程集团公司, 成都610017
  • 收稿日期:2011-07-26 出版日期:2012-05-01 发布日期:2012-06-21
  • 作者简介:文联勇(1975-),男,贵州桐梓人,高级工程师,博士研究生,从事地质灾害防治、岩土体稳定分析及锚固方面的研究工作

Separation of Stone and Water to Prevent Debris Flow

WEN Lian-yong1,2, XIE Yu2, LI Dong2, WANG Yong2   

  1. 1. College of Environment and Civil Engineering, Chengdu University of Technology,Chengdu 610059, China; 2.Sichuan Geological Engineering Group, Chengdu 610017, China
  • Received:2011-07-26 Online:2012-05-01 Published:2012-06-21

摘要: 文家沟于2010年8月13日爆发泥石流,一次下泄量达460万m3,沟床下切深度最大约70 m,是5•12大地震后典型的次生地质灾害,也是我国近年来规模较为罕见的特大型泥石流。鉴于该泥石流规模巨大、地质条件复杂,在治理方案的选择和设计上具有很大难度。在分析该泥石流典型特征、成因以及各功能分区地形特征和坡体物质组成的基础上,详细论证了排导、拦挡、固源、截水分流等措施在该泥石流沟防治工程中的效果和局限性,通过比选和设计,论证了“水石分离”综合治理措施的可行性和治理效果,为大型泥石流治理提供了新的思路。

关键词: 泥石流, 水石分离, 防治工程, 地质灾害, 引水隧洞

Abstract: As the secondary disaster after the megaquake on May 12,2008, a heavy debris flow broke out on August 13, 2010 in Wenjiagou village with its one-time discharge amount up to 4.6 million cubic meters and maximum depth of gully bed downcutting over 70 meters. This catastrophic debris flow, together with complex geological conditions, makes it challenging to select and design the control scheme. Based on analysis of the formation and source of the debris flow, we demonstrated the effects and limitations of control schemes involving drainage, obstructing, source consolidation, flow cutoff and diversion. Through comparison, we proposed the scheme of separating the upstream water flow with middle stream stone by flow diversion tunnels. The project consisted of diversion tunnel, catch basin, diversion dike, and screening grids at the bottom of the catch basin. The project was proved to be effective through rainfalls of 165mm, 130mm, 182.4mm in 2011. This research provides a new approach and could be referential for the control over large-scale debris flow.

Key words: debris flow, separation of stone and water, prevention project, geohazard, diversion tunnel

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