Thong tin khoa hpc cong nghe m o \| DE XUAT CAC GIAI PHAP NANG CAO HIEU QUA THONG GIO TAI KHU LO TRI - CONG TY THAN T H O N G NHAT NAM 2016 KS ThiSu Dinh Thanh Trung tdm An todn Mo - Vien Khoa hoc Cdng nghe Mo - Vinaeomin ThS H6 Dinh Dung Cdng t}- than Thong \bdl Bien tap: ThS Pham Chan Chinh Tom tat: Trong khai thdc than hdm 16, cong tdc thdng gio dong vai lid quan nhdm cung cdp du luang khong cdn thiit cho cdng nhdn lain viec, giam nhiit dd cai thiin diiu kiin vi hdu, giam ndng dp inetan vd cdc doc khdc xuong du&i gi&i han cho phip theo quy chudn nhdm ngdn ngira cdc vu chdy no melan bid than Trong bdi viit ndy, cdc tdc gid gi&i thieu kit qua khao sdt ddnh gid hiin trang vd di xudt cdc giai phdp ndng cao hiiu qua thong gio tgi khu Lo Tri - Cdng ty than Thong Nhdt ndm 2016 M a dau Trong nhu'ng nam gan day, cac md than ham Id m d rgng va tang chilu sau khai thac d i n d i n edng tae thdng gi6 cang khd khan Cae dien san x u i t thay doi lien tuc d i n tdi mang gid cung thay doi theo Cong tac theo ddi, khao sat, cap nhat lien tuc cac thong s l va sy thay doi eiia mang gid r i t quan de tir dd co cac giai phap dieu chinh cai tao mang gid md Hien tai, Cdng ty than Thong Nhit dang khai thae tu' cae mirc -35 d i n mu'c -140, mang gid dang giai doan chuyen doi khd khan Tif yeu cau tren, nam 2016, Cdng ty than Thong Nhit da p h i i hgp eung Trung tam An toan Md - Vien Khoa hgc Cdng nghe Mo tiln hanh khao sat va danh gia hien trang he thdng thong gid khu Lg Tri nham dua cac giai phap nang eao hieu qua edng tae thdng gid md phap thdng gid hut, sa d l thong gid trung tam de thdng gid cho md vdi 02 tram quat 2K56-No24 dat tai mu'c +52 Cdng tac dao Id ehuan bj chii y l u b i n g khoan no min, ching giii' b i n g vi s i t hinh vdm O l thong gid cho cac guang Id cue bo, md sir dung cae loai quat gid ma hieu BMS, YBT 30, YBT 11, DBKJ-6.3, FBD-7.5, QGL-22 va ong gid mem ed dudng kinh 0600 -^ 800m, thong gid cho cac guang Id vdi chieu dai trung binh tu" 100m d i n 500m Can cir vao Quyit djnh s l 562/QO-BCT 16/02/2016 ciia Bg Cong Thuang, Cong ty than Thong Nhit dugc x l p loai I v l metan Danh gia hien trang va de xuat cac giai phap cong tac thong gio mo Cong tac khao sat hien trang he thing thdng gid la ea sd quan trgng d l tir dd cd nhirng danh gia va dua cac giai phap cai tao n h i m nang Mgt sd dac diem m v via, he thong Ichal cao chit lugng thdng gid cho mo, dong thdi tif thac, thong gio cua khu Lo Tri, Cong ty than eae ca sd dip lieu khao sat, ed t h i diing lam dir Thong Nhat lieu d i u vao cho cae mo hinh hd trg tinh toan, Khu Lo Tri dugc md via khai thong b i n g he quan ly mang gid mo Cac thdng s l khao sat thong Id b i n g va gieng nghieng Tai mirc +13, gom: Sa d l he thing thong gid, c l u triic mang md Id b i n g xuyen via d i n cac khu I, II, III diing gid, luu lugng gio cung c l p cho ho tieu thu d i i u lam Id thong gid, khai thac t i n g mu'c -35 + +13, kien vi hau, cac cdng trinh thong gid, hoat cung d p vat lieu cho mirc dudi Tai mire +41, dgng eiia quat gid ehinh, quat cue bg, sue can dudng 16 Trong thdi gian tir quy II d i n quy III md via b i n g cap gieng nghieng d i n mirc -140 nam 2016, Trung tam An toan Md da t i l n hanh Hien tai, mo dang ap dung he thdng khai thac khao sat danh gia mang gid khu Lo Tri n h i m cot dai theo phuang k h i u dat, khai thac tir mire cap nhat hien trang va kip thdi dua giai phap -35/den +13 Mu'c-140 ciia gilng tien hanh dao thdng gio hieu qua; chuan bj tao dien khai thac tir mirc -140/-35, Trong quy II: Khu vyc Lg Tri sir dung 01 tram vdi san lugng khoang 1,7 trieu tin/nam Khu md Lg Tri hien dang sir dung phuang quat sd goc l i p canh 350, cdng s u i t 630 Kw, JAS-ANZ IQIUCERT ISO ^ _ 0 KHCNM SO 2/2017 * \ \ TOAN M O Thong tin khoa hpc cong nghe mo toe vdng quay 1000 v/phut, g i m 01 quat boat dgng va 01 quat dy phdng de thdng gid cho toan mo Cdng tae khao sat cho thiy, nang lyc cung c l p gid ciia tram quat van dat yeu e l u , nhung phan phii gid eho cae hg tieu thu chua hgp ly (cd 16 chg thu'a gid, cd Id chg thilu gid), ly ehu y l u la eong trinh thong gio x u l n g c l p , de r6 gid Idn; luu lugng gid vao mgt so guang bj ton that rd gid qua I n g gid, mgt s l dudng 16 thdng gi6 eiia cac 16 chg bj nen bep, giam djen tieh thdng gid, cdng tac ddng md cira gid, eong gid ehua theo quy djnh d i n d i n mang phan phdi gid bi anh hudng Trong quy II, Trung tam An toan Md cung da tien hanh khao sat, kiem djnh nang lyc lam viee ciia tram quat gid chinh n h i m xae djnh c h i dp lam viee thye t l cua quat Tu' cac k i t qua khao sat danh gia nhtrng t i n tai mang gid md, Trung tam An toan Md cung vdi Cdng ty than Thing Nhat da dua giai phap toi uu dd lap dat quat cue bd tang cudng gid cho cae hg tieu thu cdn thilu gid, cai tao, bd tri lai cac edng trinh thdng gid mgt so Id chg va hudng gid, dd, phat sinh mgt so t i n tai d n k h i c phuc nhu: Hudng gid di qua g i l n g chinh mirc +42 xuong mirc -140 khdng dat yeu cau so vol thilt ke (hudng thdng gid dang di nguge tu' dudi len), mdt s l dudng Id thong gid bj nen, lun giam t i l t dien lam tang sire can dudng Id, han e h l gid saeh luu thdng Id chg t h i l u gid qua trinh d i i u t i l t chua phii hgp (hinh 2) Sau khao sat, tinh toan, Trung tam An toan Md da dua phuang an dieu tilt de dam bao yeu d u sir dung cae cdng trinh cira gid va chong xen Id k i t hgp vdi quat cue bg lap dat tai Id DVTG -45 Id ehg II-6B-1T, k i t qua tinh toan va md phdng the hien hinh K i t qua sau cai tao hudng gid tai gilng chinh mirc +42 da di xudng mirc -140 va luu lugng gid tai Id chg da dugc cai thien theo yeu e l u (bang 2) Trong quy IV, eae dien mire -140 md rgng, tang san lugng d eae phan via IA, 5C, 6D mirc -35, de dap irng yeu c l u san x u i t va hudng phat Sau cai tao, b l tri lai cac edng trinh trien lau dai eua khu Lg Tri Trung tam An toan thdng gid va sir dung quat cue bd tang cudng Md sau khao sat tinh toan da cung vol Cdng tai Id chg 6B-1T KT12 va Id ehg PV-6B KT9, luu ty than Thong N h i t thao luan dua phuang an lugng gid phan phii d i n cac hg tieu thu, 16 chg, chay lien hgp 02 tram quat 2K56-N°24 tai mat guang cue bg da duge cai thien, dap irng du bang +52 vdi tram s l cdng s u i t 400 kw chay a gdc l i p canh 30°, tram quat sd cdng suit 630 yeu c l u (bang 1) K i t qua tinh toan md phdng mang gid khu Lg kw boat ddng a gdc l i p canh 35° Tri sau eai tao, dugc md phdng bing phin Khi chay song song tram quat, luu lugng m i m VentGraph t h i hien hinh gid cho toan md da tang len 40%, dap u'ng dugc Trong quy III, khu vyc Ld Tri v i n tri tram yeu e l u eho cac hg tieu thu, ddng thdi cho thay quat s l -2K56-No24, boat dgng tai gdc l i p luu lugng va hudng gid gid di qua gilng ehinh canh 35° d l thdng gid eho toan md Qua qua +42 xudng mire -140 da duge eai thien ban so trinh khao sat cho thiy, mang gid khu Ld Tri vdi quy III (dat 2,6 m%) Tuy nhien, luu lugng khdng ed thay doi Idn so vdi quy II, chi thay doi gid toan md tang nhieu, phan phoi gid chua hgp Bang Luu luang gid qua Id cha truoc va sau khicai tao TT Vi tri Ghi chu Lwu lirong (m^/s) Ld chg (-30 + +18)PV3C-KT1 Thuv ti m'/s 6,9 Yeu ciu Danh gia Sau cai tao, m^/s mVs 7,4 Khong dat 8,3 Lo chg (-29 + +18) L2PV6cl khu TT-KT3 Lo chg lop vach -30 PV6b-KT9 6,0 2,3 7,4 5,6 Khong flat Khong dat 8,4 9,8 6,4 3,9 8,1 6,2 Khdng flat Khong flat 9,3 6,5 Lo chg (-35-+18) PV2B - KT11 Lo chg II-6B-1T ldp - KT12 KHCNM SO 2/2017 * AN TOAN MO Lip quat tang cudng YBT 22Kw Lip quat tang cuong YBT 22Kw Thong tin khoa hpc cong nghe m o a a - ?- %-^: :_^.o^ip H/n/71 K^f qua Wn/i toan md p/idng mang gi6 khu Lo Tri sau cai tao bing phin mim VentGraph (Ghi chu: NhCrng diim danh dau la Id cha thieu gio da dime dieu tiit gio va vi tn lip quat cue bo tang cuKrng gio) :S=^- •garg' ^^ =• '.a 'C f*^ Hinh Kit gua mo phong hien trang mang gio khu virc Lo Tri quy III bing phin mim Ventgraph (Ghi chu: NhOng diim danh diu la dtmng Id cd hieang gio ngirac so ven thiit ke va id cho thiiu gio) ly, cac c d n g trinh cira gid t h u a n g d d n g , cong gid (bang 3) gid, tudng chan tai mdt sd vj tri da bj xd lech hoac cu hdng, cong venh, giam ehire nang d l l u tilt gid, mgt s l 16 can lap dat them cira gid d i i u tilt Sy m i t can bing v l luu lugng gid giira hai eanh ciia md, dan den mgt s l Id chg cd van t i e gid vugt qua so vdi quy djnh mdt sd Id chg thilu Tu' nhO'ng tdn tai tren Trung tam An toan Md da dua giai phap de d i i u chinh luu lugng gid theo yeu c l u cu t h i nhu sau; Quan ly chat ehe edng tae ddng md cira gid, cho cac cira gid thudng ddng phai duge ddng kin, dac biet tai 16 van chuyen +13, 16 dgc via da +13 canh Tay, 16 KHCNM SO 2/2017 * VN TO.AN MO ISO 0 Thong tin khoa hpc cong nghe m o Hinh Kit qua m6 ph6ng mang gio khu Lo Tri sau cai tao bing phin mim VentGraph (Ghi chii: NhUng diim danh dau la dwang Id lip dat mai cong trinh diiu tiit gid va quat cue bd tang cuong Iwu luvng) Bang Luu luang gi6 truac va sau cai tao Lwu Iwgng (m^/s) TT Vi tri Truac cai tao, m^/s Sau cai tao, mVs L6chgll-6B-1T 4,3 10,5 G i l n g chinh +42/-140 Gid di tCf mirc -140 len +42 la: 0,5 Gio di ti> mirc +42 xuong -140 la: 2,6 Bang Luu luong va toe gi6 vuot qua quy djnh a 16 cha guy IV TT Ten Id chiy Toe gio (m/s) Lwu Iwang (i v'/s) Thuc ti Yeu ciu Danh gia Lo chg (-30++18)PV3C -KT1 16,1 7,5 Dat Lo chg (-29++18) 2PV6D KT3 7,8 10,8 Thieu Cho phep Danh gia 4,7 0,25^4 Khong dat 2,1 0,25 + Oat Thwc ti Lo chg (-20-+0)PV1 A - KT4 21,3 6,4 Dat 5,3 0,25 + Khong dat Lo chg (-30++18)PV3A K T l 8,0 9,9 Thieu 2,1 0,25 ^ Dat L6chgll-6B-1TI6pl-KT12 6,0 6,2 Thilu 2,0 0,25, Dat xuyen via sd mirc +13 la cae dudng Id cd tan suit van tai va ngudi di lai Idn Cai tao, lam kin lai eae cira gid dat tren cac Id dge via de dam bao luu lugng gid di qua Id chg Lip dat cira khung go phii bat kin, lip dat cong gid de giam ro gid KHCNM s o 2/2017 * AN TOAN MO Vdi cae giai phap tren, hieu qua thdng gid da,, dugc nang cao, luu lugng gid dugc phan phoi hgp ly ban, dap irng dugc yeu clu ciia cac hp tieu thu Kit qua mo phdng mang gid khu Lg Tri sau thyc hien cac theo bien phap cai tao the hien hinh Thong tin khoa hpc cong nghe m o Hinh Kit qua mo phong mang gio khu Lo Tri sau cai tao (Ghi chii: Vi tn danh diu la cac cong trinh thdng gid duuc cai tao lam kin va lip cda gid mai) cac giai phap da tao hieu qua, nang cao chat Ket luan Trong nam 2016, Trung tam An toan Md k i t lugng thdng gid toan mo, tao t i l n d l lam tdt ke hgp vdi Cong ty than Thing Nhit da khao sat, hoach thdng gid nhu'ng nam tiep theo./ Tai lieu tham khao: tinh toan mang gid va dua nhOng giai phap Bo Cdng Thuong (2011), Quy chuin qudc gia de td'ng budc nang cao chit lugng thdng gid cho td'ng giai doan va theo hudng phat trien vi an toan khai thac m6 ham 16 Trung tam An toan Mo (2016), Khao sat danh lau dai eiia khu vye Ld Tri Vdi nhifng giai phap mang tinh thilt thyc, dua lai hieu qua eao nhu gia hien trang he thdng thong gio va di xuit cac giai k i l m djnh lal nang lyc ciia tram quat gid chinh, phap hoan thien mang gio tai khu Lo Tri - Cong ty tu' dd, dua giai phap chay lien hgp tram than Thdng Nhit nhim dap dng yeu ciu san xuit quy IV nam 2016 quat ehinh; phan phii theo yeu c l u cua eae hd Vien Nghien ciru co hgc dit da, (2006), Giai tieu thu, d i i u tilt d l lulng gid di tir cira Id mirc thieu phan mimVentgraph, Vien han lam Khoa hoc +42 xuong mirc -140 theo dung thilt k l , b l tri, Ba Lan quan ly eae edng trinh thdng gid mo Tong the Investigation, evaluation of the current situation and proposal of the solutions for increasing the efficiency in the ventilation works at Lo Tri area, Thong Nhat Coal Company in 2016 Eng Thieu Dinh Thanh Institute of Mining Science and Technology - llnacomin MSc Ho Dinh Dung Thong \hat coal companv Summary: In underground coal mining operations, the venlilalion works have played an imporlanl role for providing the necessary air volume to the workers, reducing the temperature, improving the climauc condition, reducing the content of methane and other toxic gases lo below the tolerable limits according lo the safety code to prevent the methane and coal dust explosions In this paper the authors refer to the results from the investigation, evaluation of the current situation and proposal of the solutions for increasing the efficiency In the ventilation works at Lo Tri area Thong Nhai Coal Companv in 2016 US-ANZ IQUICBI ISO Q^ 0 KHCNM SO 2/2017 * AN TOAN MO ... giai phap da tao hieu qua, nang cao chat Ket luan Trong nam 2016, Trung tam An toan Md k i t lugng thdng gid toan mo, tao t i l n d l lam tdt ke hgp vdi Cong ty than Thing Nhit da khao sat, hoach... chinh, phap hoan thien mang gio tai khu Lo Tri - Cong ty tu'' dd, dua giai phap chay lien hgp tram than Thdng Nhit nhim dap dng yeu ciu san xuit quy IV nam 2016 quat ehinh; phan phii theo yeu... de td''ng budc nang cao chit lugng thdng gid cho td''ng giai doan va theo hudng phat trien vi an toan khai thac m6 ham 16 Trung tam An toan Mo (2016) , Khao sat danh lau dai eiia khu vye Ld Tri Vdi