简介：摘要铁路建设必然会占用大面积土地，如果不严格控制和强化竣工后临时用地的复耕措施会对沿线土地资源和土地性质产生一定的影响。施工期间动用大量土石方，防护不当回造成水土流失；生产生活污水及噪声控制不当会对附近的环境和居民生活造成影响。新建吉林至珲春客运专线铁路工程，监理在施工中，依据信息化施工管理，加强巡视、观测等过程控制，对地下水不受污染，植被有效保护，水保措施落实等措施加以论述。

简介：摘要本文以西南山区岩溶地区长大隧道反坡排水为背景，阐述了反坡隧道排水方案比选、排水管及水泵选型，为类似工程提供借鉴。

简介：TocontrolsoilerosionandrestorethedegradedenvironmentintheLoessPlateau,alargenumberofmeasuresrelatedtosoilandwaterconservationhavebeenemployedthathaveprofoundlyaffectedcatchmentproperties.Thisstudyconstructedthreeindicatorstocharacterizechangestothecatchmentslope,proposedbothamethodforaregressionanalysisofadjacentimagesandasequencemodel,andappliedmultisourceremotelysensedimagesandGISspatialclusteringanalysistechnologiestoextractthematicinformationandcomprehensivelyanalyzethecatchmentchangecharacteristics.Theresultsindicatethatthecatchmentslopepropertieschangedsignificantly.Atcatchmentscale,theaveragevaluesofARC,DVCandARTwere6.43%,25.57%and4.30%,respectively.Thereweresixclusteringtypesofcatchmentslopepropertychanges.Themaximumandminimumoftheaveragesimilaritiesoftheclusteringtypeswere0.992and0.935.Eachslopecontrolmeasureshadadistincteffectoncatchmentslope;thedominatingfactorofeachclusteringtypewasidentifiedas:Type1:D-VC,Type2:D-VCLU,Type3:D-LUVC,Type4:D-TAVC,Type5:D-TACandType6:D-MFC.Type5andType1coveredthelargestareas,respectivelyoccupying37.28%and31.01%.Catchmentslopepropertychangesalsohaddistincttypesthatdependedontheirgeomorphologicalconditions.Thesefindingsprovideausefulbasisfromwhichtofurtherstudycatchmentslopehydrologicalandsoilerosionprocesses.

简介：摘要长期以来，窃电现象在我国非常普遍，据资料统计，在不考虑隐蔽窃电手段的情况下，我国每年因此造成的经济损失高达200亿元。如何加大用电监察力度，做好反窃电工作，确保我国电力能源运用的高效性，成为现代电力企业所必须重视的关键问题。