Thong lin khoa hpc cong nghe m o XAY DUNG HE THONG BANG TAI VAN TAI THAN TUT MAT BANG +20 KHU NAM VE KHU SANG TUYEN TRUNG TAM MO NGA HAI Cong t y T]\HH MTV t h a n Quang H a n h For increasing the coal productivity and transportation capacity, and environment improvement, recently, under the coordination between Quang Hanh Coal Company and VIMSAT, the installation of the conveyor system for coal transportation from the ground of +20 level to the Central coal separation area has been carried out replacing the transport form of using trucks with low capacity and high operational and maintenance cost The paper also introduces the main technical features of the conveyor system Thyc hipn chu truang eua Tap dodn Cdng nghiep Than Khodng san Viet Nam ve viec bdng tai hda san xuat nham ndng eao nang suit, san lugng khai thac vd quan trpng han Id cai thipn mdi trudng tgi viing md, Vipn Khoa hpc Cdng nghp Md phdi hgp cung cdng ty TNHH MTV than Quang Hanh t i i n hdnh khao sat, thiit ke xdy dyng hp thdng bang tai, van tai than tir mat bang +20 ve khu sdng tuyln Trung tdm d l thay t h i cho hinh thure van tai dtd vdi ndng suit thap, chi phi van hdnh bao dudng tdn kem vd gay anh hudng nhieu tdi mdi trudng Theo yeu d u cdng nghp, tuyln bang nhgn tai tir diem rdt cua bang tai giing mat bang +20 d i l m d d tai tgi xudng sang Trung tdm mat bang +21, vdi ndng s u i t vgn chuyen ban dau Id 600.000 tan/ndm Tren ca s d d i l u kipn dja hinh thyc t l cd sd hudng tuyln cd t h i xac Igp cho tuyen bang: ThS DOAN NGOC C A N H KS vu HU'U HOANG Vien Khoa hgc Cdng ngh^ Md • Vinacomin + Phai sir dung nhieu trgm dan ddng trung gian, khd khdn viec eung d p ngudn dipn dpng lu-w eho tuyln bdng - Qua khao sdt ky dilu kipn dja hinh, trao ddi vd thao lugn - Hudng tuyln thir hai: Tir vdi chu dau t u - Cdng ty than d i l m nhdn tai men theo khu Quang Hanh da thdng nhit ddi phia sau nhd d i l u hdnh lua chpn hudng tuyln thir 3: mat bdng +20 vd men theo Tir d i l m nhdn tai mgt bing dudng bp rdi vdo Xudng +20 khu Nam, tuyln bang vugt qua dudng d td re vao sdng mat bang khu Nam vd tuyln Qua phdn tich ddnh gid, ca dudng d td di qudc Id 18 sau hai hudng tuyln tren deu cd dd di men theo bd sudi phia nhO'ng nhuge d i l m , cy t h i Id: ben trdi (theo ehilu ddng chay) rdi vugt qua d u Bpnh + Tuyln di vdng, phai vipn, di t i i p men theo bd sudi chuyin hudng dd sir dyng khoang 30m vugt qua sudi nhiiu bang ndi t i i p sang phia bd ke mat bang khu + Cd nhieu giao cat vdi Nhd d i l u hdnh Cdng ty than dudng giao thdng, anh hudng Quang Hanh Tgi ddy tuyln den k i t d u lap dung bdng di tren ego vugt qua khu + Giao d t vdi nhiiu cdng nhd xudng cua Cdng ty, vugt trinh xdy dyng, khu dan c u qua d u Lep My, t i i p tyc di men dgc theo bd sudi rdi vugt hipn cd gdy khd khdn va mat len khu ddi d i t Cdng ty nhiiu chi phi cho giai phdng than Quang Hanh quan ly, mgt bang dogn ndy tuyln bdng iDdm udn + Tuyln bdng phai leo ddc theo mat bang khu vye vd t i i p cao d i n d i n chi phi d i u t u tyc vugt sudi sau dd v l Idn vd chi phf vgn hdnh bao Xudng sang Trung tdm mgt bang +21 dudng sau ndy se tdng cao - Hudng tuyln thir nhit: Tir d i l m nhdn tai tuyln bdng vugt qua sudi, ehgy men theo khu ddi phia sau khu nha lam viec cua edng ty than Quang Hanh rdi dd vdo Xudng sdng KHCNM S 8/2011* CO DifiN - T I / D O N G HOA Thong tin khoa hpc cong nghe m o Hinh Li^a chgn tuyen bang Hudng tuyen lya chgn phii hgp nhit so vdi cdc hudng tuyln van khdc dieu kipn dja hinh thyc t l cua khu vye, bdi da dap irng dugc ddng thdi cdc yeu d u : dai van chuyin ngan nhat, su dyng nhit trgm din dgng, hgn ehl tdi da giao d t vdi cdc cdng trinh xdy dyng da cd, vdy, khdng phai giai phdng mgt bang - Vdi hudng tuyen lya chgn, ndng suit vgn tai yeu d u , bang tai thiit ke cd thdng sd ky thudt eg ban nhu tren bang 1: * Tong qudt ve tuyln bang: - Tuyln bdng cd tdng chieu dai 730m, dugc thiit k l udn lugn hinh sin bam theo dja hinh vdi gdc ddc max Id 4°, bang tai lya chpn Id logi bang tai Idng mdng vdi gdc ddc lan Idng mang Id 30° Tram din dpng bd tri g dau bang vdi dpng ca lOkW (1 dgng eg dy phdng), trgm cang bang ddi trpng vdi hanh trinh cang bang dai 7m vdi khoang 300m chieu dai bang tai ehgy tren sudi, dilm giao cat vai dudng qudc lg, duang npi bg dudng tdi diem dudi mat dim la 4,5 m (theo quy djnh cua Bp Giao thdng Van tai), cdc cdt dd' thep kit d u td hgp vu'ng chae dam bao cho phuong tien van tai hogt ddng binh thudng, an toan + Dogn bdng tai ehgy tren sudi vdi myc dich giam thiiu try mdng nam dudi Idng sudi can trg ddng chay Thiit k l dam thep td hgp vdi kit d u khung quay xudng vdi chieu dai 18-36 m (tiiy theo dilu kien dja hinh) cdc cgt dd thep kit d u td hgp dam bao dp ben vu'ng cua kit d u + Dogn bang ehgy tren djg hinh bang phlng, leo ddi nui tien hanh san ggt mgt bang cdng ty bang tai dugc thiit k l tdng sd 18 dam thep td hgp kit clu khung khdng gian vdi khau dp tir 18-36m, ciing vdi nhtrng chan dd td hgp thep kit d u vu'ng chae NhO'ng dogn bang tai di tren dja hinh phang hoge leo ddi, nui bd tri khoang cdeh 6m khung dam kit clu thdng thudng Vdi tdng khdi lugng 240 tan thep gia cdng - Giai phdp thiit ke: + Tgi dilm giao d t bang tai vdi dudng qudc lg thiet k l dam thep td hgp vdi kit d u khung khdng gian quay len dai (18, 21, 24 va36m), dam bao chieu cao an toan tir mat Bing - Dgc tinh ky thugt cua bang tai TT Thdng sd ky thugt Ndng suit Chiiu ddi Tdedd Dp ddc max Chiiu rOng bdng Odng ca: - Md hi$u - Cdng suit - Di§n dp KHCNM SO 8/2011* C6 DIEN - T I / D N G HOA ddy Dan vj tinh T/h m m/s dd mm Gia tri Ghichu 200 730 ±4° 800 kW 2x110 V 380/660 ddng ca du phdng Thong tin khoa hpc cong nghe m o J36D_0Q_ s; y'~ f"! r -^^-^ ^^\ ~- ^ ^ /^ ^ > ^ l ^ ^ "— —— - ^-—? < ^ — U i ^ ~,^—^ -^ ~\^ y^ JT -i= :f\.= - isr-^ s J Cot mat dudng f( ^3 _ 1,, ——^^ quoc Id Durdng Hinh Dogn tuyen bang ehgy tren su6i Sudi Hinh Dogn tuyin bang ehgy tren sudi tgo b l mgt phii hgp de cd the si> dyng chan bang tai vdi kit A dgn gan ã ' dgt ^ji+ôr,o tiep tron tren cau tryc tiir - Tgp the ky su Phdng May va Thiit bj Md (Vipn Khoa hpc Cong ngh?\ Md) trg , ^ ,^ \ vdi xsy ,./ mgt bang KHCNM S 8/2011* CO D I £ N -TLT DONG HOA ke Autocad vd phin mIm tfnh toan kit clu SAP 2000 da thiet kAl , o kiem t jx tra,' , tfnh.z todn Thong tin khoa hpc cong nghe m o Al Cdt nen sau san gat 1^ Hinh Doan tuyen bang chay tren dja hinh bang phang kit d u khung khdng gian vdi ehilu dai 18-36 m tdng trgng lugngJen^tdi 135 t i n thep Vdi ket cau vtrng chdc, an , • J ,• u u-.:» utoan va on dmh dua bang tai vao van hdnh sir dung Hinh Ban ve thiet ke dam 36m Kiem tra dd bin cua dam Dudi day chung tdi trinh bay so luge tfnh todn dam bdng tai (dam 36m) t^ep to hap kit clu khung j - - o/iu'*iA + Tai trono tdc duna len khong gian dai 36 m thiet ke "="' ^"^"y ^=*^ "'='"y '^" , , , , H^m nAm rnva tinh toan nhusau: ^ oam gom co KHCNM SO 8/2011* CO DIEN -TU DONG HOA Thong tin khoa hpc cong nghe mo a) TTnh tai: Ki hipu (q) + Tai trpng cua bang tai + vat lieu =160kg/m cung Id tai trpng phdn bd theo ehilu ddi cCia dam 36m + Oe viec tfnh toan dugc dgn gian, ta phan bd tTnh tai vd hogt tai vdo dam DBI vd DB2: p1=1,3*100*2,75/2+1,3*10 0*(6/2)= 568,75kg/m Hogt tai phdn bd diu len dam DB2 ben sdn P2=1,3*100*2,75= 357,5kg/m Hogt tai phdn bd deu len dam DB2 ben sdn P2=1,3*100*2,75= 357,5kg/m Tai trpng bang tai + vdt lieu phdn bd tren dam DBI ki hipu: Hogt tai phan bd diu len dam dd cdt nhjp 6m ben sdn q1=160/2,5*(2,75/2)+160/2,5* (6/2)=280kg/m P3=1,3*100*3= 390kg/m Tai trpng bang tai + vdt lipu phdn bd tren dam DB2 ki hipu q2=160/2,5*2,75=176kg/m Tai trpng bang tai + vat lipu phdn bd tren dam dd cdt nhjp 6m: q3 = 160/2,5*3=192kg/m b) Hogt tai: ki hipu (p) Tai trpng ngudi di Igi tren sdn coi la phdn bd deu tren dipn tich san cdng tdc Idm bang tim tdn nhdm = 1,3*100 kg/m^ (lay theo TCVN 2737-1995) O l vipe tinh toan dugc dan gian ta coi gan dung la hogt tai phdn bd todn bp va d i u vdo dim DBI vd DB2 Hoat tai phdn bd diu len dam DBI ben sdn pi=1,3*100*2,75/2+1,3*10 0*(6/2)= 568,75kg/m Hogt tai phdn bd diu len dam DBI ben san Tra bang tim dugc (p = 0.38 A^ 5022 = 67L5 mx(pxF 0,8x0,3 8;c24,6 (kg/cm^) < [a] = 2100 (kg/em') - Tinh kiim tra vdng: + Theo quy phgm ddi vdi bdng tai vd dam cau tryc d l hogt ddng binh thudng thi dp vdng Idn nhit phai thoa mdn dieu kien sau: Hogt tai phdn bd diu len dam dd edt nhjp 6m ben sdn P3=1,3*100*3= 390kg/m Sur dyng phin mIm SAP 2000 dua tai trpng tdc dyng len dam ta kiim tra dugc lye dgc tryc tren cdeh cua dam, tir dd ta kiim tra dd bin cdc thanh, cdc chju tai trgng Idn nhit gdm cd: + Thanh cdnh tren (LI 20 X 10) chju lye nen N= -9225 (Kg) '™„ 2,77 I Tra bang tim dugc (p = 0.48 A^ 9225 m^spcF 0,8x0,4^246 =9765 (kg/cm^)