Thong tin khoa hpc cong nghe mo 3Cii qxtoL dft €ljLLMtg fthjuCtinjq pJtJOLfL khoLO^ MAI AP SUAT TUYET DOI DE TINH SUfC CAN DirGTNG LO VA LAP MANG GIO HIEN TRANG B A N G PHAN MEIVI THONG GIO VENTGRAPH[.]
Thong tin khoa hpc cong nghe m o 3Cii qxtoL dft €ljLLMtg fthjuCtinjq pJtJOLfL khoLO^ MAI AP SUAT TUYET DOI DE TINH SUfC CAN DirGTNG LO VA LAP MANG GIO HIEN TRANG B A N G PHAN MEIVI THONG GIO VENTGRAPH Ventilation operation has always played an important ThS DINH OLPC QUANG TS PHUNG QU6C HUY role in underground mining activities For calculating ThS BUI VIET HyNG and installing the ventilation system, it is essential to pay much attention to the input parameters, of which, Vlen Khoa hgc Cdng nghe Md - Vinacomin the most important one is the drift resistance This paper refers to the application of the absolute pressure surveying method for calculating the drift resistance and making ventilation network with the i^entgraph ventilation software j Dat van de cdn phu thupc nhilu vao tinh ehu quan cua ngudi tinh toan Bai bao gidi thieu k i t qua ap dyng phuang phap khao sat ap suit tuyet d l i Cdng tae thdng gid ddng vai trd r i t quan trpng trpng nganh cdng nghiep khai thac than ham 16 Muc dich cua ham Id d l tinh SCPC can (R) thdng gi6 nham eung c l p cua mang thdng gid Cdng ty khpng sach vao h i m 16 d l than Quang Hanh tri h6 h i p cho ngudi lao dpng, dung 6k h6a loang cac Cac phu'ang phap xac loai dpc va chay n l djnh sire can metan xuIng dudi gidi han 2.1 Phwang phap xac chay n l Trong tuang lai, djnh bang kich thw&c hinh nganh khai thac than ham Id hgc Viet Nam se cang xuIng sau, di$n san xult cang rpng, SCPC can cua mang dudng Id dd, he thing dudng Id va bao g i m SCPC can ma sat, SCPC vi$c tinh toan cdng thong s l can cyc b6 va SCPC can vat chan th6ng gid trd len phCpc Swc can ma sat: tgp han Trpng cac thcng s l d i u vap d l tinh toan th6ng SCPC can ma sat cua dudng gid, SCPC can dudng 16 (R) Id dugc tinh bang cdng thCpc ddng vai trd quan trpng Hien sau: cd 02 phuang phap tinh SCPC can dudng Id dd la (1) phuang phap xac djnh bang cac thdng s l kich thude hinh Trong dd: hpc cua dudng Id va phuang P: Chu vi dudng Id, m; P phap tinh SCPC can bang each khae sat ap suit tuyet d l i duge tinh g i n dung theo edng trpng ham Id Viec tinh toan thCpc SU'C can dudng Id (R) dya vao p = c.4s (2) kich thudc hinh hpc cua dudng Id phy thupc vao nhieu (C la h# s l phy thupc hinh he so thyc nghidm lien quan dgng tilt dien Id: Ld c6 tilt Do dd, k i t qua tinh SCPC can di$n vuong: C = 4; tilt di?n R '^:KM KHCNM SO 5/2011* AN TOAN MO tr6n: C = 3.54; tilt dien v6m tam: C = 3.8; tilt dien hinh thang: C = 4.1) L: Chilu dai doan Id, m S: Dien tich tilt dien ngang eua doan Id, m^ a - He s l SCPC can ddng hpc cua duo'ng Id (he s l SCPC can ma sat), phy thupc vao k i t e l u ehing 16; KG.s^/m" Trj s l a dugc l l y theo bang 1, theo kinh nghiem, d day l l y gia tri a tuang Crng cac k i t c l u ching Swc can cue bg: SCPC can eye bp g i m cac dang sau: Dpt thu, dot md, qua CLPa s l gid, hgp lulng, re ngoat (90°, 120°) va dugc tinh theo cong thCrc : r K, = C-2.g.S' (3) Trong d6: y- Trpng lugng rieng cua khdng khi, Kg/m^ S- Dien tich tilt dien dudng 16 cd t i c dp gid v (m/s), m^ g- Gia t i c trpng topdng, g l l y bang 9,&lm/s^ Thong tin khoa hpc cong nghe m o Bang Tri so a va cac gia tri a dwac ehgn Dac diem ket cau chong R =C Gia tri 0.10" Theo bang Gia tn chon Cac dLPong 16 khong c h i n g 5^20 Cac gilng thoat gio co d u d n g kinh Idn 2^8 Cac 16 bing van tai ching be tong hoac gach 3^7 Cac 16 van tai c h i n g g l tr6n 9^23 17 Cac 16 bing van tai ching bing vi thep hinh 5^23 14 Cac dudng 16 c h i n g b i n g cac chiu bing 7^23 - Lo chg ching vi ching dan g l , sit, thuy lyc) 30-^260 35 Lo chg c h i n g vi c h i n g lien hgp 45^120 - Bang He so swc can cue bd xac dinh bang thyc nghiem r lgS{S-Sj (5) He sd SU'C can vat ehan C phy thupc vao tri s l Re, hinh dang, dp nham cua vat chan He s l C nhd nhlt tri s l Re=4.10^ va bang 0,15 cdn Re>4.10^thi C h l u nhu khong d l i va bing 0,2 Sy phy thupc eua he s l C vap hinh dang va dp nham cua vat can duge xac djnh bang thyc nghiem Cac doan Id e i n khao sat duge xae djnh theo sy thay d l i v l dien tieh tilt dien hoac S1/S2 0,9 0,7 0,8 0,6 0,5 0,4 0,3 0,2 0,1 thay d l i v l k i t c l u ching, ed 0,01 0,04 0,09 0,16 0,25 0,36 0,49 0,64 0,81 \ nghTa mpt dean Id khao sat la Trw&ng hgp thu hep doan Id tren suit chilu dai cd cung tilt dien va eung kit c l u S1/S2 0,9 0,7 0,5 0,6 0,8 0,4 0,3 0,2 0,1 ching edn SCPC can cyc bp 0,15 0,05 0,1 0,2 0,25 0,3 0,35 0,4 0,45 ^ chinh la s y thay d l i dot ngpt giQ'a cae doan Id n i i tilp eae khung gilng md, SCPC can ^- He s l SCPC can eye bp nhau, xem xet cac vat chin cua cae tdi, goong xac djnh bing thye nghiem doan dudng Id Tinh toan SCPC can vat + Vdi trudng hgp thu hep, SCPC can eua toan bp doan chan: Su'c can vat ehan ed t h i md rpng, ^ dugc xae dinh phu dudng Id la t i n g cua su'c can bilu thi qua ap suit dpng cua thupc vao ty s l giQ'a Si va S2 ma sat, SCPC can eye bp va (Si, S2 tuang u'ng la dien tich ddng d vat t h i : SCPC can vat chin tilt dien cua dudng Id phin thu hep va phin md rdng) Viee tinh toan SCPC can theo ^S (4) (bang 2) phuang phap cho thiy viec SLP dung nhilu cac he s l Trong dd: + Vdi trudng hgp re vdng, C: He s l su'c can vat chin lien quan cQng nhu cae gia tri ^ dugc tinh theo cong thCpc: trung binh, dd, gia tri su'c ^rv= 0,57 5^ (5: g6e v6ng re khdng thCp nguyen can doan dudng Id ed sai s l tinh bing radian) y: Trpng lugng rieng eua r i t Idn he thing dudng Id khong khdng I n djnh v l tilt dien + Hing s l SCPC can cyc bp v: T i c dp gid trung binh eung nhu k i t e l u ehing va vdng re va dot thu tu' dudng Id dudng Id d c h l vat cQng r i t phu'c tap khap vao ranh quat sat, vay tinh toan phu chin ^ = 0,67^1,16 thudc nhilu vao each tinh va g: Gia t i e trpng trudng kinh nghiem cua ngudi tinh Swc can vat chin: La su'c SN: Tilt dien ngang Idn toan Phuang phap hQ'u can gay bdi cac vat t h i nam d nhlt cua vat t h i hieu dugc ap dung d l tinh Idng ddng ehay Trong tpan SCPC can cae doan dudng SCPC can vat chan 6wgc dilu kien md, su'c can vat Id dang thilt k l , ehua dao chin thudng la SCPC can cua tinh theo cong thCpc sau: Trw&ng hap ma rdng KHCNM SO 5/2011* AN TOAN MO T h o n g t i n k h o a hpc c o n g nghe mo 2.2 Tinh toan swc can dw&ng Id theo phwong phap khao sat cac thong so ap suit 17.27/ P =61Q5exp.( ^)-0,000644P.(r, -tJ ^ V +2373 'A: " w Ban chit cua phuang phap la khao sat xac djnh SCPC can ting hgp eua cac doan dudng Id bing each luu lugng gid, ap suit tuyet d l i va cac thong s l nhiet dp, dp I m kh6ng tai hai dilm d i u mut cua m i i doan dudng 16 Phuang phap giam dugc nhilu sai s l so vdi phuang phap truyin thing w ' (10) Tu va tk - Nhiet dp udt va nhiet dp khd dp bing I m k l Asman D l xac djnh SCPC can doan dudng 16 tu' dilm d i n dilm mang thong gid mo (dilm 1, la cac nut mang thdng gi6) c i n dac khao sat cae th6ng s l sau: Npi dung eua phuang phap la: Gia tri SCPC can cua doan dudng Id dugc tinh theo cdng thCpc: R = H/Q^;kg.s'/m^(k^) (6) Trong dd: H - Ha ap suit giQ'a hai dau doan dudng Id; mmHzO (daPa) Hinh Md ta phwang phap xac dinh swc can bang each ap suit tuyet doi Q - Luu lugng gid di qua doan dudng 16; m'/s - Do ap suit tuyet d l i tai dilm nut: Pi va P2 (Pa), - Luu lugng gid di qua doan dudng 16: q (m^/s), - Nhiet dp kho tk, nhiet dp udt ty, - Dp cao dilm nut va nut TCP cae gia tri duge, t i l n hanh nhap vao eong thCpc, tu- dd tinh dugc eae gia tri ap va SCPC can tren doan 16 theo theo c6ng thCpc (6) va (7) Ha ap suit giCpa hai d i u doan dudng 16 H duge tinh theo eong thCpc: H = Pi - P2 + g.w (Zi- Z2) (7) Trong dd: Pi va P2 - Ap suit tuyet d l i tai dilm d i u va culi dean dudng Id, Pa g - Gia t i e trpng trudng, m / s^ Zi , Z2 - Cao dp cua eae dilm nut dau doan dudng 16, m w - T r p n g lugng rieng cua kh6ng Kg/m^ Trpng lugng rieng eua kh6ng w dugc tinh bang cong thu'c: P - 0,378 P^ w = 287 (/, + 273 ,15 ) (8) Vdi: P - Ap suit tuyet d l i trung binh dudng Id, Pa p = ^1 + ^ (9) P w - A p s u l t hai nude KHCNM SO 2011* AN TOAN MO K i t qua SLP dung phu'O'ng phap ap s u i t d l tinh SLPC can du'O'ng 16 va t h i l t lap mang gio hien trang b i n g p h i n m i m thdng gio Ventgraph Trong pham vi bai bao nay, cac tae gia dua kit qua khao sat thyc t l SCPC can dudng Id (R) d l i vdi mang gid hien trang eua cym via V4, 5, 6, tai Cong ty than Quang Hanh nam 2010 va SLP dyng phin m i m thong gio Ventgraph eua Ba Lan d l lap mang gid hien trang Mang gid hien trang hoat dpng vdi 04 Id chg, SLP dung 04 tram quat hut loai FBDCZ-II N- 13 dat tai cac mat bang +70, +30, +35 va +22 Bing phugng phap ap suit, xae dinh dugc cac thdng s l SCPC can cua dudng 16 va c h l dp lam viee hien trang cua cae tram quat gid chinh Cac thdng s l kiao sat, dac dudi ham 16 t h i hien bang Thong tin khoa hpc cong nghe mo Bang Ket qua khao sat ap suit, lwu Iwang gid va sire can dw&ng Id Cac thdng sd khao sat diem dau Nhanh Ap suit tuyet doi khd T wot (Pa) eo CC) (m) r Do cao Cac thdng so khao sat diem cuoi Ap suit r r Do tuyet cao khd w&t doi (Pa) CC) CC) (m) Lwu Iwang gid Chen h ap Swc can (m^/s) (dapa) (kM) Khu viPC cum via 4+7 23 22,3 -35 27,1 7,54 0,0103 101520 23 21,5 -35 15,8 6,55 0,0261 101510 22,5 22 -35 1,2 1,00 0,6944 101630 23 21 -50 14,1 6,51 0,0327 23 -50 2,21 1,00 0,2066 21,5 -50 28,10 3,53 0,0045 -50 15,30 23,54 0,1005 -50 27,10 4,00 0,0055 26 +20 101520 26,5 25 +20 23 21,5 -35 101520 23 22,5 -35 5-8 101660 23 22,5 -50 101650 23,5 7-8 101510 23 22,5 -50 101650 22,3 5-11 101630 23 22 -50 101570 22 21,5 8-9 101650 22,3 21,5 -50 101610 21,5 20,5 6-7 100950 26,5 1-2 100950 7-2 101520 2-5 9-27 101610 21,5 20,5 -50 101600 21,5 20,5 -50 16,22 1,00 0,0038 27-28 101600 21,5 20 -50 101590 21,6 20 -50 8,21 1,00 0,0148 28-10 101590 21,5 20 -50 101580 21,5 20,5 -50 6,8 1,00 0,0216 9-10 101610 21,5 20,5 -50 101580 22 21,5 -50 4,98 3,00 0,1210 10-11 101610 22 21,5 -50 101580 22 21,5 -50 4,98 1,00 0,1210 11-12 101570 22 21,5 -50 101520 21,8 21 -50 31,68 5,00 0,0050 12-20 101570 21,5 21 -50 101520 21,8 21 -50 13,68 16,00 0,0854 20-21 101360 24,5 24 -50 101350 24,5 24,1 -50 8,51 1,00 0,0138 20-23 101360 24,5 24 -50 101050 24 23 -30 2,51 54,13 8,6614 -50 101005 24,5 24 -30 9,40 49,11 0,7673 -30 101050 24 23 -30 11,23 4,00 0,0317 24,5 +35 13,34 157,6 0,8857 24 +35 5,98 33,00 0,9240 21-22 101450 24,5 24 22-23 101090 24,5 24 23-24 101050 24 23 -30 100220 25,5 25-24 100550 26 25,5 +35 100220 25,5 24-26 100220 25,5 24 +35 99930 25,5 24 +35 26,80 29,00 0,0404 46-47 99980 23 21 +11 99930 24 22,5 +117 4,24 5,00 0,278 47-44 99930 24 23 +11 100300 23 22,3 +75 3,12 5,50 0,5629 44-43 100350 23,5 23 +75 100330 25 24,5 +75 2,91 2,00 0,2374 47-43 99940 24 22,5 +11 100330 25 24,5 +75 1,80 3,29 1,0146 43-40 100330 25 24,5 +75 101400 25 24,5 -20 3,97 2,16 0,1366 40-30 101400 25 24,5 -20 101605 27,8 27,6 -50 3,8 13,99 0,9687 0,413 30-29 101370 26,5 26,2 -50 101350 27,8 27,6 -50 2,2 2,00 30-31 101370 27,8 27,5 -50 101340 27,8 27,6 -23 5,5 33,6 1,1101 31-32 101340 31,4 31 -23 101280 31 30,5 -23 12,50 6,0 0,0384 37-31 101000 28 27,5 +20 101340 31,4 31,2 -23 5,00 14,60 0,5840 73-37 101060 27,2 26,8 +12 101050 28 27 +12 5,01 1,00 0,0400 KHCNM SO 5/2011* AN TOAN MO Thong tin khoa hpc cong nghe mo 38-73 101000 27,4 25,2 +20 101060 27,5 27 +12 16,9 3,12 0,0109 29-32 101350 26,4 26,2 -50 101280 29,5 29,2 -23 8,50 37,78 0,5229 32-34 101280 28 27 -23 100680 27,6 26,4 +22 22,20 111,21 0,2256 35-34 101000 27,8 26,6 +22 100680 27,5 27 +20 2,786 34,27 4,4144 73-32 101060 27,8 26,6 +12 101280 27,5 27 -23 11,50 17,92 0,1355 34-36 100680 27,8 26,6 +20 100220 27,5 27 +22 26,00 48,26 0,0714 72-71 101000 21,6 19,6 +27 101120 25 24 -5 7,643 25,12 0,4531 71-58 101120 21 20 -5 101540 21,6 19,6 -50 7,01 10,76 0,2197 58-60 101540 25,2 23,5 -50 101500 25,5 24 -50 24,1 4,00 0,0069 60-61 101400 25 24 -50 101360 24 23 -50 9,05 4,00 0,0488 61-62 101380 26 25,5 -50 101330 25 24,3 -50 6,00 5,00 0,1389 62-63 101330 25,5 24 -50 100750 26 25 -5 5,9 109,68 3,0455 61-64 101380 24,5 24 -50 100730 25,5 25 -5 3,20 116,80 11,4067 63-64 100750 26 25 -5 100730 27 25,5 -5 6,01 2,00 0,0554 64-65 100730 26 25,4 -5 100700 25,8 25 -5 2,15 3,00 0,6490 60-65 101400 25,8 25,2 -50 100730 25,8 25,6 -5 15,01 118,63 0,5265 66-67 100500 26 25,3 -5 100300 25,5 24,6 +68 30,28 103,2 0,1126 65-66 100700 25 24,5 -5 100500 24 23,5 +27 21,05 56,54 0,1276 64-66 100730 26 25 -5 100500 26,5 25 27 4,50 59,5 2,938 68-67 101000 23 22 +70 100300 24 23,5 +68 5,66 72,31 2,2571 67-69 100300 26 25,3 +68 99800 25,5 24,6 +70 34,05 52,27 0,0451 27-58 101640 26,5 26,2 -50 101570 26,5 26,2 -50 7,80 7,00 0,1150 'GRAS -liBlilute or Minii«Science and Technology, Vietnam - Steady slate calculation File : O:\TaiUenTrATMaWiet ban 2011Vdiny- 4 B- €a 73 J_6_2^ Hinh Kit qua tinh toan mo phong mang gio cum via 4-^7 mo Quang Hanh tren phin mem Vengraph KHCN-M SO ^ AN TOAN MO Thong tin khoa hpc cong nghe mo Bang So sanh ket qua tinh toan md phdng lwu Iwang gid qua Id cho' v&i kit qua dac khao sat thwc te Cac chi tieu ky thuat thdng gid chinh TT Vi tri Ky hieu tren sa Lwu Iwang, m^/s Do dac Chenh lech, m^/s Phan phdi ty nhien Cum via 4-^7 Lo chg V6 canh Ddng 21-22 9,4 10,3 1,3 Lo chg NN V6 khu Nam 43-40 3,7 3,4 0,3 Lo chg NN V7 31-37 5,0 5,2 0,2 Lo chg NN V5 CT 64-66 4,5 4,2 0,3 Su' dyng cae k i t qua khao sat nhap vao phin m i m thong gid Ventgraph nham phye vy cong tac tinh toan, phan phli gid toan md Hinh md phdng mang gid hien trang khu cym via V4, 5, 6, tai Cdng ty than Quang Hanh Kit qua phan phli luu lugng gid tren phin m i m cho thiy kit qua tuang d l i phu hgp vdi cac gia trj dae, khao sat (bang 4) Kit luan va d l xult - TCP eae k i t qua khao sat eho thiy, phuang phap khao sat SCPC can R bing phuang phap ap suit tuyet d l i eho eae k i t qua chinh xae vdi thye t l cua dudng Id, han c h l XU' ly nhilu cac he s l - Viee ap dyng phim m i m mang gid that I n djnh, qua trinh khao sat bj anh thdng gi6 Ventgraph d l lap hudng nhilu cua cdng tac san mang gid hien trang la r i t c i n thilt, giup nha quan ly tinh xult h i m Id toan va quan ly mang gid t i t - Viee xac djnh SCPC can han bing phuang phap xae djnh - C i n phai cap nhat lien tyc kich thude hinh hpe phu hgp vdi cac dudng Id ehua dao, mpi s y thay d l i he thdng dang thilt k l hoac d l i vdi dudng Id d l k i t qua phan phli gid bang phin m i m nhCpng ngudi cd kinh nghiem duge ehinh xae han Khi dua md vao hoat dpng, c i n thilt k i t hgp tiln hanh Tai lieu tham khao: khao sat lai bing phuang phap khao sat ap suit Nhlt la hien tai cac md than h i m Id da duge trang bj cac thilt bj ap suit tuyet d l i - Nghien CCPU ap dyng phuang phap khao sat ap suit tuyet dli d l xac (Jnh SCPC can dan vi cho mpt s l cae dudng 16 - Kit qua md phdng mang dae topng nhu cac 16 xuyen via, gid bing phin mim dpc via van tai, thdng gid ehinh, Ventgraph tuang d l i phu hgp cac gilng van tai, thong gid, vdi k i t qua dac tai hien thdng qua viec khao sat nhilu trudng lln vdi nhCpng dudng Id dae - Dk ed t h i ed s l lieu khao tnpng, loai kit elu, tilt dien, tie sat theo phuang phap ap dp gid d l cd t h i dua 6\jegc gia suit chinh xae c i n ddi hdi tri SCPC can dan vj cho mdi loai khao sat nhilu l l n va e i n dudng Id KHCNM SO 5/2011* AN TOAN MO PGS.TS Iran Xuan Ha, TS Le Van Thao - Co so thiet ke thong gio mo (dung cho lop cao hgc khai thac mo), Truong Dai hgc Mo - Dia chat, 1999 TS Dinh Hung - Giao trinh thong gio md, Tap va Tap 2, Truang Dai hgc Mo Dia chat Ths Pham Chan Chlnh, KS Dinh Due Quang VENTGRAPH phan mem quan ly thong gio hij'u hieu, Hgi nghi khga hgc ky thuat mg tgan quSc l§n thu XVIII, 2007 ... l tinh SLPC can du''O''ng 16 va t h i l t lap mang gio hien trang b i n g p h i n m i m thdng gio Ventgraph Trong pham vi bai bao nay, cac tae gia dua kit qua khao sat thyc t l SCPC can dudng Id... trang eua cym via V4, 5, 6, tai Cong ty than Quang Hanh nam 2010 va SLP dyng phin m i m thong gio Ventgraph eua Ba Lan d l lap mang gid hien trang Mang gid hien trang hoat dpng vdi 04 Id chg, SLP... Lo chg NN V5 CT 64-66 4,5 4,2 0,3 Su'' dyng cae k i t qua khao sat nhap vao phin m i m thong gid Ventgraph nham phye vy cong tac tinh toan, phan phli gid toan md Hinh md phdng mang gid hien trang