贵州都匀马达岭地质灾害链的自动化监测

AUTOMATIC MONITORING OF MADALING GEOLOGICAL DISASTER ON DUYUN,GUIZHOU PROVINCE

贵州省都匀市马达岭地灾体自2003年起间歇发生小规模崩塌,2006年5月18日持续降雨诱发大规模滑坡。崩滑体产生的碎屑流被采空区内蓄积的老窑水卷携并铲刮沟道残坡积物冲向下游形成泥石流。该地质灾害由崩塌、滑坡以及次生泥石流所组成,呈现连锁反应,形成了崩滑流灾害链。以贵州省马达岭地质灾害链为研究对象,基于现场地质环境条件调研和地质灾害链发育规律研究,确定以雨量、相对位移、倾角、渗压水头、泥位、次声为监测指标,在崩滑体后缘和泥石流沟口部位分别布置了相应的自动化监测仪器,形成了集自动采集、无线传输、数据解析、分析决策和预警预报为一体的地质灾害链自动化监测系统。监测系统运行状况显示,该监测系统能够较好地反映该地质灾害链的变形特征,可为该地质灾害链的预警预报提供技术支撑。

Small collapses had happened intermittently at Madaling,Duyun in Guizhou province since 2003.A large-scale landslide happened on May 18th,2006 due to continuous rainfall.The debris,caused by slump-mass, rolled by the water released from gob,scraped the residual slope wash of the gull,which forms the mud-rock flow. Such kind of geo-hazard,presenting as chain reaction,is composed of the collapse,landslide and secondary flow, and forms a disaster chain of collapse landslide and debris flow.This paper takes this Madaling geological disaster chain as the study object.It is based on the regional environmental geological survey and research of regularity of geological disaster chain.It takes rainfall,relative displacement,obliquity,osmotic pressure water head,mud level,infrasound as the monitoring indexes.Automatic monitoring stations are set up at trailing edge of collapse body and mouth of debris flow.It forms an automatic monitoring system by integrating automatic collection,wireless transmission,data gathering and analysis,decision-making and early warning.Indicated from the running state of monitoring system and monitoring results,it can reflect the deformation behavior of geological disaster chain better＆amp;nbsp;by live transmission of monitoring data,offer technical assistance for early warning of the disaster chain.