Geosynthetics kalma ce ta gaba ɗaya don kayan roba da ake amfani da su a aikin injiniyan farar hula. A matsayin kayan aikin injiniya na farar hula, yana amfani da polymers na roba (kamar robobi, filayen sinadarai, robar roba, da sauransu) a matsayin albarkatun kasa don yin nau'ikan samfura iri-iri, waɗanda aka sanya a cikin ƙasa, a saman ko tsakanin ƙasa daban-daban. , don yin rawar da ba ta da ruwa da kuma hana ruwa, ƙarfafawa, magudanar ruwa da tacewa da kuma dawo da muhalli.
Bayani kan tafkin wutsiya
1. Hydrology
Tafkin wutsiya na jan karfe yana cikin kwari. Akwai ramuka a arewa, yamma da kudu da aka raba da tsarin ruwa da ke kewaye. Tafkin wutsiya yana da yanki mai fa'ida na 5km². Akwai ruwa a cikin ramin duk shekara, kuma ruwan yana gudana babba.
2. Hoton hoto
Kwarin gaba ɗaya yana arewa maso yamma-kudu maso gabas, kuma ya juya zuwa arewa maso gabas a sashin Mizokou. Kwarin yana da ɗan buɗe ido, yana da matsakaicin faɗin kusan 100m kuma tsayinsa kusan kilomita 6. Dam ɗin farko na tafkin wutsiya da aka tsara yana cikin tsakiyar kwarin. Hoton saman gangaren bankin yana da tsayi kuma gangaren gabaɗaya 25-35°, wanda shine yanayin ƙasa mai tsayi na tectonic denudation.
3. Injiniya yanayin yanayin ƙasa
Lokacin zayyana shirin hana gani na tafkin wutsiya, dole ne a fara aiwatar da binciken binciken ƙasa na injiniya na yankin tafki. Rukunin ginin ya gudanar da binciken injiniyan ilimin geological na tafkin wutsiya: babu wani lahani mai aiki da ke wucewa ta wurin tafki; Ƙasa mai wuya, rukunin wurin ginin shine Class II; Ruwan cikin ƙasa a cikin tafki yana mamaye da ruwan ƙwanƙwasawa; Dutsen dutsen ya tsaya tsayin daka, kuma akwai wani yanki mai kauri mai kauri da aka rarraba a yankin dam din, tare da karfin injina. An yanke hukunci gabaɗaya cewa wurin ginin wutsiya tsayayye ne kuma ya dace da ginin sito.
Shirye-shiryen anti-seepage na tafkin wutsiya
1. Zaɓin kayan anti-sepage
A halin yanzu, da wucin gadi anti-seepage kayan amfani a cikin aikin ne geomembrane, sodium bentonite waterproof bargo, da dai sauransu The sodium bentonite waterproof bargo yana da in mun gwada balagagge fasaha da aikace-aikace, da kuma dukan tafki yankin na wannan aikin da aka shirya don zama. dage farawa da sodium bentonite mai hana ruwa bargo Horizontal impermeability.
2. Tsarin magudanar ruwa na kasa tafki
Bayan an tsaftace kasan tafki tare da yi masa magani, sai a dora wani tsakuwa mai kauri mai kauri 300mm a kasan tafkin a matsayin magudanar ruwa a karkashin kasa, sannan a kafa makahon makaho don magudanar ruwa a kasan tafki, da kuma bututun DN500 mai ratsa jiki. an ajiye shi a cikin rami makaho a matsayin babban jagorar magudanar ruwa. An saita ramukan makafi don magudanar ruwa na jagora tare da gangare a kasan tafkin wutsiya. Akwai ramukan makafi guda 3, kuma an jera su a hagu, tsakiya da dama a cikin tafkin.
3. Tsarin magudanar ruwa na gangara
A cikin magudanar ruwa mai zurfi, an shimfida hanyar sadarwa ta hanyar ruwa ta geotechnical, sannan an kafa magudanan magudanun ruwa da bututun reshen magudanar ruwa a cikin kowane ramukan reshe da ke wurin tafki, wadanda ke hade da babban bututun da ke kasa na tafki.
4. Anti-seepage kwanciya kayan kwanciya
Kayan da ke kwance a kwance a cikin wurin tafki na wutsiya yana ɗaukar bargo mai hana ruwa na tushen sodium bentonite. A kasan tafkin wutsiya, an saita magudanar ruwa mai tsakuwa. Idan akai la'akari da buƙatar kare bargon ruwa na sodium bentonite, an shimfiɗa ƙasa mai laushi mai kauri mai kauri na 300mm akan dutsen tsakuwa a matsayin mai kariya a ƙarƙashin membrane. A kan gangaren, an saita gidan yanar gizon magudanar ruwa mai haɗaka a wasu wurare a matsayin Layer na kariya a ƙarƙashin bargon ruwa na sodium-bentonite; A wasu wurare, an saita geotextile 500g/m² azaman mai kariya a ƙarƙashin membrane. Za a iya amfani da wani ɓangare na yumbu maras kyau a cikin wurin tafki na wutsiya a matsayin tushen ƙasa mai laushi.
Tsarin madaidaicin magudanar ruwa a kasan tafkin wutsiya shine kamar haka: wutsiya - bargon ruwa mai hana ruwa sodium bentonite - ƙasa mai kyau 300mm - 500g/m² geotextile - ruwan magudanar ruwa (300mm tsakuwa Layer ko na halitta stratum tare da kyakkyawan permeability). , magudanar ruwa Makafi rami) matakin tushe Layer.
Tsarin anti-seepage Layer na tailings gangaren kandami (babu wurin fallasa ruwan ƙasa): wutsiya - masana'antar bargo mai hana ruwa sodium bentonite 500g/m² geotextile - matakin tushe Layer.
Tsarin anti-seepage Layer a kan tailings kandami gangara (tare da ruwan kasa daukan hotuna yankin): wutsiya - sodium tushen bentonite hana ruwa bargo - ruwa magudanun ruwa Layer (6.3mm hada geotechnical magudanar grid, branched magudanar ruwa makafi rami) - leveling tushe Layer.
Lokacin aikawa: Maris 11-2022