资源描述：
《济三矿风井厚松散层沉降变形光纤光栅监测方法》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、第38卷第5期煤炭科学技术Vol138No152010年5月CoalScienceandTechnologyMay2010济三矿风井厚松散层沉降变形光纤光栅监测方法1111233柴敬,董梁,李毅,刘金瑄,朱磊,张广文,杨建华(11西安科技大学能源学院,陕西西安710054;21中煤西安设计工程有限责任公司,陕西西安710054;31兖州煤业股份有限公司,山东邹城272100)摘要:为了准确预测深厚松散层深部层位因失水压缩变形,分析总结了松散层不同深度黏土层和砂层的失水特征、压缩变形特性,采用松散层钻孔植入式光纤光栅监测系统,对济三矿风井处第四系松散地层104)180m段埋设的18
2、个光纤光栅传感器进行了长期的实时监测,由光栅传感器监测的松散层应变得出了各层位的压缩变形量。监测结果表明,松散层下组的厚砂砾层是产生主要压缩变形层,可塑状态的厚黏土层也有较大压缩变形,其余层位压缩变形小。下组厚砂砾层和厚黏土层是重点监测层位,为深钻孔植入式光纤光栅监测系统监测设计提供了依据。关键词:松散层沉降变形;砂层;黏土层;光纤光栅中图分类号:TP212文献标志码:A文章编号:0253-2336(2010)05-0013-04MonitoringandMeasuringMethodwithOpticalFiberandOpticalGratingforThickLooseSt
3、rataSubsidenceandDeformationinMineVentilationShaftofJisanMine1111233CHAIJing,DONGLiang,LIYi,LIUJin-xuan,ZHULei,ZHANGGuang-wen,YANGJian-hua(1.SchoolofEnergy,Xi.anUniversityofScienceandTechnology,Xi.an710054,China;2.ChinaCoalXi.anDesignEngineeringCorporationLimited,Xi.an710054,China;3.YanzhouCo
4、alMiningGroupCorporationLimited,Zoucheng272100,China)Abstract:Inordertoaccuratelypredictthecompacteddeformationduetowaterlostinthedeeplayerofthethickloosestrata,thepaperanalyzedandsummarizedthewaterlostfeaturesandcompacteddeformationfeaturesofthedifferentdepthclaylayerandsandlayeroftheloosest
5、rata.Theopticalfiberandopticalgratingmonitoringsystemintheboreholeoftheloosestratawasappliedtothelongtermreal-timemonitoringandmeasurementwith18opticalfiberandopticalgratingsensorssetinthe104)180msectionoftheQuaternarysystemloosestrataatthemineventilationshaftofJisanMine.Theopticalgratingsens
6、orswouldmonitorandmeasurethecompacteddeformationsateachlayerofthestrainsintheloosestrata.Themonitoringandmeasuringresultsshowedthatthethickgravellayer-lowgroupoftheloosestratawasthemaincompacteddeformationlayeroccurred,theplasticstatethickclaylayerhadahighcompacteddeformationandtherestlayersh
7、adasmallcompacteddeformation.Thelowgroup,includingthethickgravelandthickclaylayerwasthekeymonitoringandmeasuringlayers,whichcouldprovidethereferencestothedesignoftheopticalfiberandopticalgratingmonitoringandmeasuringsysteminthedeepborehole.Ke
