w Thong tin khoa hoc cong nghe mo MOT SO NHAN XET VA KINH NGHIEM AP DUNG THlT NGHIEM CONG NGHE CO GIOTI HOA DONG BO KHAI THAC KHAU LOn* TRU HA TRAN tai 16 ehd via 8 khu Gieng Vang Danli va v ia 6 Idiu[.]
w Thong tin khoa hoc cong nghe mo MOT SO NHAN XET VA KINH NGHIEM AP DUNG THlT NGHIEM CONG NGHE CO GIOTI HOA DONG BO KHAI THAC KHAU LOn* TRU HA TRAN tai 16 ehd via khu Gieng Vang Danli v a v i a Idiu Tlian Tliung l^am M S U Th.S Lt THANH PHl/ONG So far, Institute of Mining Science anf Technology Khoa hgc Cong nghe Mo-Vinacomin Vien (IMSAT) has coordinated with Vang Danh and Nam Mau coal companies in developing the pilot application of fully mechanized top coal caving method at longwalls of coal seams N°8 and N°6, respectively This method is to be applied to mining thick coal seams with slope angle of < 3^ In the paper, the author refers to the evaluation of the results from this pilot application of fully mechanized top coal caving method Cdng nghe khai thac khau binh 7,0 m, gdc ddc via trung ket, phan bd deu, day 4m + 22 Idp tru tran dadc ap dung binh 12° Trong via cd ta U m, sap trung binh den khd de khai thac cac khu vac via Idp kep, tdng chieu day sap do; tru trac tiep la Idp set day ddc thoai va nghieng (a < 0,74mH-1,08 m Vach trac tiep ket, set than dang thau kfnh, 35°), ban chat cua cdng nghe la set ket, set than dang thau day 0,23m H- 1,8m, d§ trddt la khai thac toan bd chieu day kfnh day 0,5mH-1,5m mem bd; tiep xuc, bdt ket phan bd deu, via bang Id chd Idp tru ddng bdt ket phan bd deu day day 2m - 15m, tru ben vung thdi tran thu hdi than vach 2,85m-;-15,0 m, vach dn djnh trung binh den ben vufng lis nam 2007, Vien Khoa trung binh; vach cd ban la bdt Ddng bo thiet bj sCf dgng hpc Cdng nghe Md - ket xen kep cat ket day Id chd bao gdm may Vinacomin da daa vao ap 6mH-30m, sap trung binh khau MB 122V2P-450E, mang dgng thCf nghiem cdng nghe den khd sap do; tru trac tiep la cao gadng DSS.-260, may cd gidi hda khai thac tran set ket, set than phan Idp day thu hdi than ndc bang ddng bd 0,4m-^1,2m, dadi la bdt ket chuyen tai DSS-190, may thiet bj may khau va dan phan deu Than via nghien DUK-2P1, tram bdm chdng tU' hanh Vinaalta (do thudc loai ban antraxit, trpng nhu hoa HA 80/320 (cac thiet Vien, Cdng ty Alta CH Sec va laong the tfch y, = 1,65 tan/m^ bj nhap khau cCia CH Sec) va Cdng ty Che tao may chat ladng cao (than cue he thdng van tai ngoai Id chd Vinacomin phdi hdp thiet ke 25mm H- 100 mm cd A** = 9%) SLf dung bang tai che tao) tai Id chd 11-8-2 mCfc + Tai Nam Mau, Id chd thCf Ket cau chdng giOf ca hai Id 50/+105 via khu Gieng Vang nghiem dau tien cd dac diem Danh thdng qua hdp ddng la via than day trung binh 6,7 chd tadng ta nhau, chdng giCf thau khai thac Den nam m, ddc trung binh 10-15°; than gadng bang dan chdng 2010, Vien lai tiep tuc thac thudc loai antraxit, trpng laong Vinaalta, loai cd ket ca'u hien hop ddng hdp tac vdi the tfch 1,65 ta'n/m^; Idp than tran than ndc dang cCfa thu hdi Cdng ty than Nam Miu daa vach, nhat la phfa dau Id chd cao, SLf dung Id chd cdng nghe va ddng bd thiet bj mem, bd dang than "quyt"; ddng nhat mpt tuyen mang vao ap dung tai Id chd via vach trac tiep la Idp bdt ket cao Cac nga ba chdng bang mac +155/+19b khu I Than phan bd deu day ta 5m -^ 25 cdt thuv' lac ddn-xa hop Gadng Thung m, trung binh 17m, vach thudc Id chd 11-8-2 Vang Danh dai 120 Tai Vang Danh, khu vac ap loai dn djnh, thadng gap hien m, lap drat 80 dan chdng, Id chd dung thCf nghiem cd dac diem tadng vach tree; vach cd ban Nam Mau dai 102 m, lap dat 66 dja chat la chieu day via trung chu yeu la bdt ket xen kep cat dan chdng KHCNM S6 1+2/2011* CNKT HAM L Thong tin khoa hpc cong nghe m o Tfnh ta thang nam 2008 den het thang 12 nam 2010, tai Vang Danh da khai thac daoc tren 500 ngan tan than nguyen khai (trung binh tren 200 ngan tan/nam) Tai Nam Mau, ta thang den het thang 12 nam 2010, da khai thac dadc gan 80 ngan tan than nguyen khai (cao nhat la thang 12/2010 dat 30 ngan tan) Mac san laong chaa cao so vdi nang lac cCia thiet bj, cdng nghe Qua thac te van hanh Id chd, bade dau cd the xac djnh nhufng nguyen nhan cd ban, tren cd sd dd due rut mpt sd kinh nghiem nham hoan thien cdng nghe va tCmg bade nang cao san ladng Id chd, nha sau: Dieu kien dja chat, cau true via phiic tap Trong ca hai khu vac Id chd ap dung thCf nghiem, hoat ddng kien tao nen bien ddng via than rat Idn ca theo phaong va theo hadng ddc Tai Id chd 11-8-2 Vang Danh, cac khu vac cd dang chuf nhat theo phadng chi dai IOOm-300 m, xen vao dd la cac doan via ddi hadng phai khau quay chuyen hadng Id chd; Id chd thadng gap da tru trdi len d gadng, nhieu thdi diem da ndi len nCfa chieu dai gUdng, vj tri cao nhat den 3,1 m, hau nhaca nam 2010 phai XLf ly tinh hudng bang each khoan nd pha da Dac biet, ladng nadc chay vao Id chd rat Idn, mua mda nam 2009 ILTU laong nadc chay vao Id len den 110 m%, nam 2010 laong nadc Idn nhat tren 300 m^/h, trung binh mua maa dat 200 m% Tai via Nam Mau, ta Id via mCfc +297 den Id dpc via thdng gid mCrc +185 dp ddc via 75°85°, ta mac +185 trd xudng dp ddc via chi 10°-15°, Id dpc via thdng gid mac +185 chfnh la ranh gidi udn dao via Id chd hien tai dang khau theo hadng ddc Id dpc via thdng gid theo phadng via Thac te khau gOdng, nhat la doan 20 m dau Id chd, than va da vach nhanh chdng bj tgt Id vao gadng, phai XLf ly da qua cd bang khoan nd Ld chd trung giufa, phai thadng xuyen bdm thoat nadc, ddng thdi dan chdng thadng bi 'trdi" ddn ta hai dau Id chd vao giaa, thadng phai xCf ly chdng dan Tai Id chd cdn gap hien tadng da vach b\ tree, thdi diem Idn nhat vach tree nCfa chieu dai gaong phfa chan Id chd (48m), den 11/9/2010 mdi sap hoan toan.Trong qua trinh khai thac thadng xuyen phai xCf ly tut ndc Id gaong van dung linh hoat de cd quyet djnh chfnh xac chieu dai gadng Id chd Vf dg: tnidng hdp Id chd via khu Than Thung, Nam Mau cd the quy hoach Id dpc via thdng gid lui xudng dadi 20 m de tranh khu viic via dao hadng, neu thu'c hien nha vay se khac phuc dadc hien tadng than, da vach tran vao khdng gian Id chd sau khau gadng, v.v - Oe han che anh hadng xau dieu kien dja chat va bien ddng via phCfc tap, can thiet phai xem xet ta laa chpn khu vac ap dgng cd gidi hda Ddi vdi Id chd thCi cdng, tradng hdp gap da tm ndi cd the linh hoat khau bam tnj, tardng hdp ILTU ladng nadc chay vao Id Idn cd the md thadng phfa trade va chuyen dien khai thac, v.v Dieu dd ddi vdi Id chd cd gidi hda, vdi khdi ladng thiet bj Idn, tfnh linh hoat se kem Id chd thCi cdng nen khdng the thac hien dadc, dd quy hoach Id chd can tfnh den het cac yeu td anh hadng de lo'a chpn chfnh xac Ha tang ky thuat chua tuang thfch Hai Id chd la nhufng Id chd dau tien ap dung cdng nghe cd gidi hda ddng bd khai thac khau Idp trg tran vdi dan chdng cd ket cau thu hdi than ndc, dd tang ky thuat chaa taong thfch - He thdng dadng Id md via, chuan bj khu vg'c dope thiet lap cho khai thac thu cdng nen tiet dien dadng Id nhd, rat khd khan lap dat Id chd, dan chdng va cac thiet bj Idn phai thao ddi lam nhieu mang, tnidc lap dat phai lap rap lai,' lam tang thdi gian va chi phf lap dat Id chd - He thdng van tai ngoai chOa dap Cfng dadc yeu cau Bang thdng ke ket qua quan trac cudi thang nam 2010 tai Id chd 11-8-2 Vang Danh Theo ket qua thdng ke tren bang 1, thdi gian ach tac san xuat trung binh ca la 221,4phut, chiem 46,1% tdng thdi gian ca, dd chu yeu ach tac tuyen van tai chung (130,7phut, chiem 59% thdi gian ach tac) - Trong viec quy hoach Id chd, tren cd sd cac thdng sd dieu kien dja chat, ky thuat md da dadc xac lap can thiet phai Ddi tradng Danh, Gieng KHCNM s d 1+2/2011* CNKT HAM LO vdi tuyen van tai ngoai, hdp Id chd 11-8-2 Vang he thdng van tai khu vdi Id chd hoat ddng Thong tin khoa hoc cong nghe m o "my Bang Ngay, thang, nam 24/02 25/02 26/02 Trung binh ca Ca san xuat 3 Tdng thdi gian trona ca san xuat fohut) Thdi g ian chuan bj Thdi Gian ach tac ca Thdi gian Giao ca Do Do XLf ly Nguyen Bao lamvie va di den tuyen cong dadng Cong Cong nhan c cua noi lam van tai nghe va thiet bi khac 16 chp chung viec thiet bi 70 55 125 97 58 258 120 80 60 85 145 175 160 74 86 122 90 40 130 162 228 66 165 128 55 45 100 87 215 231 57 84 70 38 108 141 40 124 186 130 65 65 226 78 151 151 60 40 100 229 175 60 118 87 40 100 293 123 120 132 65 40 105 243 66,1 dadc thiet ke vdi nang suat van tai 900 ngan tan/nam, tUdng Ong ngan tan/ vdi thdi gian van tai gid/ca, thgc te Id chd cd gidi hda da dat san ladng tren ngan tan/ngay De khac phgc, ta giai doan quy hoach thiet ke md can phai tinh den su'cd mat cua cac Id chd cd gidi hda nham daa vao thiet ke cac giai phap ky thuat cdng nghe ve tang ky thuat phu hdp Cac dadng Id md via, chuan bi cd tiet dien du Idn, tdi thieu theo tiet dien miu VC7-9,9 cua Tap doan He thdng van tai ngoai Id chd phai dam bao kha nang thdng tai lien tuc ca Hong hoc thiet bj, chua chu dong ve vat tu, phu tung thay the Cac thiet bi chi'nh cua Id chd dadc nhap khau ta CH Sec la nhCrng thiet bi hien dai nen giai doan dau dpi ngu can bp ky thuat van chaa lam chu dadc 49,8 115,9 142,7 130,7 thiet bj Dac biet, nhieu loai vat ta, phu tung thay the chaa che tao dadc nadc, phai nhap khau Cung theo ket qua tren bang 1, viec xCf ly cdng nghe va SLfa chufa thiet bi cung la nguyen nhan chfnh gay ach tac san xuat (84,3 phut, chiem 38% thdi gian ach tac) De dam bao cung Cfng kip thdi, cd da phdng cac loai vat ta, phg tung thay the, mudn vay phai chu ddng dat hang tien tnJdc, ket hdp tang cadng che tao nadc cac loai vat ta, phg tung ta ddn gian den phac tap, ddng thdi phai ludn tri hang da phdng, tdi thieu thdi gian thang Trong thac te san xuat thdi gian vaa qua, gat mang cao Id chd bj mdn hdng nhieu nhong khdng cd thay the, thu ddng viec dat hang Den nay, cung vdi viec nhap khau cac vat ta, phu tung phOc tap, mpt sd loai vat ta da daoc KHCNM s o 1+2 2011* CNTKT HAM LO 84,3 6,4 221,4 che tao thCf nadc nham tien tdi chu ddng hdn viec cung Cfng vat ta, phg tung thay the Cong tac td chiic san xuat chua phu hep vdi Id cha ca gidi hoa Td chCfc san xuat Id chd van chu yeu theo md hinh Id chd thu cdng, bien che Phan xadng bao gdm quan ddc, phd quan ddc ky thuat, cd dien, phd quan ddc trac ca Trong ca san xuat, dadi phd quan ddc tn/c ca la td tnidng quan ly cdng nhan khai thac va ddc cdng quan ly cdng nhan cd dien, nha vay, van cd su" phan biet giOra thd Id va thd cd dien tham chi lu-ong thp" co dien toi da chi bang 70% tu'ong thp- Id, nen sa phdi hdp ca chaa chat che, tham chf nhieu tnJdng hop gay can trd lin nhau, hieu qua tac nghiep chaa cao Tieu_ chf khoan cho cdng nhan vin ap dung khoan theo Thong tin khoa hoc cong nghe m o Bang TT Vj tri lam viec Sd lirdng (ngadi) Ca Ca Ca Cong Nhiem vu chinh Bao dadng, sCfa chaa nhd, van hanh may kha'u ca, tham gia bao dadng djnh ky va SLfa chaa Idn may kha'u Bao dadng, xuc dpn guong, van hanh dan chdng, thu hdi than tran ca, tham gia bao dadng dinh ky, sCfa chu'a dan chdng Bao dadng, sCfa chaa nhd, van hanh ca, tham gia bao dadng djnh ky va sCfa chufa Idn mang cao Bao dadng, sCfa chura nhd, van hanh thiet bj va ve sinh ca, tham gia bao dadng djnh ky va sCfa chaa Idn Van hanh may khau 2 Van hanh dan chdng 6 18 Van hanh mang cao gurong 1 1 5 15 Bao dadng, sCfa chaa nhd, van hanh thiet bi va xuc dpn than ca, tham gia bao dadng djnh ky va sCfa chCira Idn 2 Tieu than qua phdng va dong than qua hoc Van hanh may chuyen tai va may nghien Van hanh bang tai Bang tai so Bdng tai so va Phdng thao than va hoc dong than Van hanh tram bom djch 1 Thu hdi vi chdng, chdng tang cUdng Id dau, 16 chan, 16 trung gian va cac nga ba 6 18 To ky thuat vien - - 10 Tiep lieu Nhan vien kinh te va thdng ke Quan ddc, cac phd quan ddc Cong - - 2 - - 1 35 25 25 85 11 12 san laong, dd nhieu tradng hdp cdng nhan chay theo san lUdng ma ft chu y den tinh trang thiet bj, hoac cd tradng hop lay than tran trade gaong gay khd khan cho ca sau phai khac phuc Ddi vdi Id chd cd gidi hda, td chac san xuat theo nguyen tac lay thdi gian hoat ddng cua thiet Bao dadng, sCfa chCifa nhd, van hanh thiet bj va ve sinh tram ca, tham gia bao dadng djnh ky va sCfa chaa Idn Thu hdi vi chdng, chdng tang cadng Id dau Id chan Id trung gian va cac nga ba 16 dau, 16 chan vdi Id chp theo bien phap dapc duyet Kiem tra tinh trang ky thuat cua cac thiet bj hang ngay, chCi tri bao dadng dinh ky va sCfa chOfa Idn thiet bi Cung ang vat lieu, daa com, lay bdi dadng Thac hien theo chuyen mdn va chac trach dapc giao Thac hien nhiem vg theo chac trach dapc giao bj va cac djnh mOc ky thuat, dinh mac tieu hao vat ta lam cd sd khoan, ddng thdi bien che cdng nhan theo hadng chuyen mdn hda Theo nguyen tac tren, phaong an td chac san xuat cho Id chd cd gidi hda dadc de xua't nha sau: KHCNM s o 1+2/2011* CNKT HAM LO - Phan xadng bao gdm quan ddc va cac phd quan ddc chOc trach, nhiem vg nha hien hanh - Thanh lap them td ky thuat vien, tdi thieu vien, dd can bd ky thuat chuyen trach di sau ve tram bdm dich va dan chdng; can bd cdn lai di sau ve cac thiet bi Thong tin khoa hoc cong nghe mo w Id chd va cac tram dien, dieu khien To ky thuat vien cd nhiem vu tham muu cho quan ddc ve thiet bi; kiem tra, ddn dd'c cdng nhan van hanh, bao dadng hang ca cac thiet bj; chu tri SLfa chufa Idn, bao dadng dinh ky thiet bi - Bien che Phan xadng cac td chuyen mdn, bao gdm: + To thiet bi: cd trach nhiem van hanh, bao dadng hang ca, sCfa chaa nhd va tham gia bao dadng, sCfa chaa Idn cac thiet bj chfnh Id chd, bao gdm may khau, mang cao, may chuyen tai, may nghien, bang tai, cac tram dien, dien dieu khien + Td dan chdng: cd trach nhiem van hanh, bao dadng hang ca, sCfa chaa nhd va tham gia bao dadng, sCfa chaa Idn dan chdng va tram bdm djch nhu hda + To cung cd: cd trach nhiem chdng tang cadng nga ba, cac Id dpc via, cung cd toan tuyen Id chd Bang trinh bay phadng an bien che cdng nhan cac vj trf lam viec chi'nh Id chd via Nam Miu Thac te van hanh thCf nghiem Id chd cd gidi hda khai thac kha'u Idp trg tran tai KET QUA XAC D.INH DO CHUfA KHI METAN TRONG VIA THAN VA DANH GIA MUTC DO NGUY HIEM (Tiep theo trang 53) - Khu vac khai thac khdng dn djnh nhieu nam, cd nhang khu vac khai thac chi ton tai mpt thdi gian ngan, dd viec SLP dgng gia tri dp thoat khf tu'ong ddi cua nam de lam co so phan loai md cho nam sau la khdng phu hop ddi vdi nhang khu vac - Gia tri dp thoat taong doi phg thudc rat nhieu vao he sd tinh gia tri dp tro cua via du'p'c xac dinh qua trinh tham dd dja chat va qua trinh khai thac - Khdng cd co sd phan loai cac khu vac dang dao Id chuan bj, chu-a du'a vao khai thac Tap doan Vinacomin da cd cdng van sd 656/CV-AT 16/02/2009 gui Bd Cdng Thu'ong de xuat bd sung can ca xep loai md theo dp chaa metan Bd Cdng Thaong da ddng y vdi de xuat cua Tap doan Vinacomin theo van ban sd 2201/BCT-ATMT 17/03/2009, theo dd ta nam 2009 gia tri dd chaa metan se dLi'p'c bd sung lam can ca de xep loai md: - Xac djnh theo dp chaa metan ta nhien: ap dgng cho nhang md chaa du'a vao khai thac, nhang khu vac mdi dang dao Id chuan bj san xuat - Xac djnh theo dp thoat taong ddi va bd sung them chaa metan ta nhien: ap dgng ddi vdi cac khu vac KHCNM S6 1+2/2011* CNKT HAM L Vang Danh va Nam Mau, cho thay, cdng nghe hoan toan cd the ap dung dieu kien dia chat phCrc tap tai vung Quang Ninh De tOng bade phat huy nang lac cCia thiet bj, cdng nghe, nang cao san ladng, nang cao hieu qua cua cdng nghe can thiet phai nghien cOu hoan thien cdng nghe, xay dung cac djnh mdc ky thuat, dinh mOc tieu hao vat ta, djnh mac lao ddng, dieu chinh che dp tien lUdng cho cdng nhan co dien, lam cd sd viec hoan thien td chOc san xua't hien dai, phu hop vdi Id chd cd gidi hda ddng bd./ dang khai thac, khu vg'c cd cung mac khai thac va d mac sau hon dang dao Id de du'a vao khai thac nam K§t luan Dp chaa khf metan la mpt thdng sd cac ky quan trpng cdng tac quan ly an toan phdng chdng chay nd Cac md than ham Id d Viet Nam dang mpt xudng sau, mac dp nguy hiem ve metan cung dang mpt tang len, hiem hpa ve metan se la hiem hpa Idn nhat ddi vdi cdng tac khai thac than ham Id De chu ddng kiem seat metan, cdng tac xac djnh dp chaa khf me tan tai cac khu vac dang va se khai thac can phai du'p'c thg-c hien thadng xuyen, day^du va nghiem tuc, ta dd cd the du'a nhang bien phap quan ly metan mpt each hieu qua, gdp phan ngan chan nhang vg tai nan chay nd khf metan./ ... khac 16 chp chung viec thiet bi 70 55 125 97 58 2 58 120 80 60 85 145 175 160 74 86 122 90 40 130 162 2 28 66 165 1 28 55 45 100 87 215 231 57 84 70 38 1 08 141 40 124 1 86 130 65 65 2 26 78 151 151 60 ... Tfnh ta thang nam 20 08 den het thang 12 nam 2010, tai Vang Danh da khai thac daoc tren 500 ngan tan than nguyen khai (trung binh tren 200 ngan tan /nam) Tai Nam Mau, ta thang den het thang 12 nam. .. 1 86 130 65 65 2 26 78 151 151 60 40 100 229 175 60 1 18 87 40 100 293 123 120 132 65 40 105 243 66 ,1 dadc thiet ke vdi nang suat van tai 900 ngan tan /nam, tUdng Ong ngan tan/ vdi thdi gian van tai