Yog, cov kav dej yuav tsum tau rov kuaj dua. Kev kuaj xyuas kom ntseeg tau tias qhov zoo ntawm cov kav dej ua tau raws li cov qauv tsim nyog, txhim kho kev nyab xeeb thiab kev ntseeg tau.
Introduction to Drainage Boards
Cov kav dej yog cov khoom siv tseem ceeb siv hauv qab daus, hauv av paving, vaj tej yaam num, thiab lwm yam teb. Lawv muaj kev ua tau zoo ntawm cov dej ntws zoo thiab kev txhawb nqa muaj zog, ua kom cov dej ntws tawm sai sai, txo cov lus dej, thiab tiv thaiv av yaig thiab turf loosening. Qhov zoo ntawm cov kav dej ncaj qha cuam tshuam rau kev siv tau thiab ib puag ncig cov txiaj ntsig ntawm cov chaw hauv av.
Qhov yuav tsum tau ua ntawm Drainage Board Retesting
Cov kav dej ntws tawm yog cov khoom siv tseem ceeb hauv tsev, thiab lawv qhov zoo cuam tshuam ncaj qha rau qhov project zoo thiab kev pabcuam lub neej. Yog li ntawd, rov kuaj dua yog tsim nyog los xyuas kom meej qhov zoo thiab kev nyab xeeb ntawm cov kav dej. Retesting tuaj yeem kuaj cov ntsuas kev ua tau zoo, lub cev thiab cov khoom siv kho tshuab, thiab tshuaj lom neeg muaj pes tsawg leeg ntawm cov kav dej kom ntseeg tau tias ua raws li cov qauv tsim nyog, txhim kho kev nyab xeeb thiab kev ntseeg tau.
Cov khoom kuaj thiab cov qauv rau cov kav dej
Kev rov ua dua ntawm cov kav dej yuav tsum tau sim lawv cov ntsuas kev ua tau zoo thiab lub cev thiab cov khoom siv kho tshuab. Cov khoom xeem feem ntau suav nrog kev khoov lub zog, thauj khoom -cov kabmob muaj peev xwm, kev ua haujlwm ntws tawm, thiab kev tiv thaiv corrosion. Ntawm lawv, lub zog flexural thiab load-cov kabmob muaj peev xwm yog qhov tseem ceeb ntawm kev ua haujlwm zoo ntawm cov kav dej, uas tuaj yeem kuaj los ntawm kev ntsuas tensile thiab compressive. Kev ua haujlwm ntawm cov kav dej thiab kev tiv thaiv corrosion yog qhov tseem ceeb ntawm kev ua tau zoo ntawm cov kav dej, uas tuaj yeem kuaj tau los ntawm kev ntsuas dej siab thiab tshuaj lom neeg kuaj. Tsis tas li ntawd, qhov zoo thiab cov qauv ntawm cov kav dej dej feem ntau yuav tsum tau xa mus rau cov qauv hauv lub tebchaws thiab kev lag luam, xws li "Geosynthetic Drainage Boards" (GB/T 20481-2006) thiab "Technical Specification for Drainage Boards" (CJJ/T-92-2009).
