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Thong tin khoa hoc cong nghe m o •kNGHIEN CUU DE XUAT MOT SO GIAI PHAP CONG NGHE NHAM TANG NANG SUAT, GIAM GIA THANH SAN XUAT Of CAC MO THAN LO THIEN CUA TAP DOAN TKV The labor production and the production cost at open pit ThS DUONG TRUNG TAM coal mines are the most important factors with their close TS, LE CONG CUCNG relationship Increasing the labor production means to decrease ThS Le BA PHLfC the production cost At present and in future, the open pit coalViin Khoa hQC Cdng nghi Md - Vinacomin mines within Vinacomin will be exploited at deeper level with Bien tap: TS Luv Van Thuc complicated mining conditions, low labor production and high production cost Therefore, research on the proposal and improvement of some technical solutions for increasing the labor productivity and decreasing the production cost at open pit coal mines within Vinacomin is very necessary Nang suat vd gid thdnh san xuat a mo 16 thien la hai yeu to quan trpng nhat, chung eo quan hg chgt che vgi nhgu Neu tang nang suat thi dong nghTa vo'i vi^c se giam gid thdnh san xuat vd nang suat se quyet djnh gid thdnh san pham sau eung (3 cdc mo than 10 thidn eug T | p dodn TKV hi^n ngy vd thgi gign tm, cdc mo dku phai khai thdc xuong sdu, dilu kien khai thac phuc tap, ndng suit lao dpng thap va gia thdnh san xuit tang cao Do do, vigc nghien cuu dh xuit, hoan thign mgt so glai phdp ky thugt cong nghp nham tang nang suit va giam gid thdnh san xuat cua ede mo than lp thien cua TKV Id het sue can thilt lipu, ca sa hg ting, nang lyc - trinh dp nguai lao ddng, ndng lue cua mdy moc thilt bj tham gia - Cdc y l u t l ve t l chuc vd bo tri lao dpng: Gid thdnh cdc khdu cdng dogn khoan - no min, xuc ble, van tai, thai, trinh dp t6 chipe, phdn edng lao dpng, quy trinh hud'ng ddn, c h l dp vd mdi Injang laod^ng Ddnh gia thyc trgng ky thudt cong ngh^ d' cac mo than lp thien cua TKV Trong suot qua trinh hoat dpng san xuit, cac md than lp thien ludn d l eao phucng eham "An toan - Doi mdi - Hieu qua - Phdt triln bin vung", dpi ngu can bp cdng nhdn vien cua cdc mo than lp thien da )f thCre dup^c vai trd cua vipc Cac ylu t6 dnh hu^ng d6n nang sudt va dam bdo cae chT tieu ky thuat, edng nghp ehu gia san phim yeu Chinh vi thi, cde ehi tieu ky thugt cdng nghp Trong ddy chuyen khai thdc mo lp thien, a m6l chu y l u cdc md thyc hipn d i u dam bao dupc cong dogn san xuit deu c6 nhilu y l u t6 ca v l yeu eau gian dogn hien nay: ty nhien - ky thudt, khdu quan ly vd dieu hanh - Cdng nghp khoan ndi chung phCi hp'p vpi san xuit c6 t h i tdc dpng den ndng suit lao dpng dilu kipn ty nhien, he so SLP dung thilt bj v6i (NSLD) vd gid san xuit (GTSX) Trong do, mdy khoan khd cao, nang suit cua may khoan NSLD Id y l u t6 ehu y l u d l quylt djnh GTSX sau CBlU-250 tgi hlu h i t eae md deu vupl dinh muc cDng Tgp doan TKV Cae may khoan thuy lye (MKTL) * Cac yiu to anh huvng den nang suat thiet CO dpng, nhung khoan d' cde khu vyc cd bi (NSTB), NSLB, chi phi san xuit (CPSX) va nud'c, nang suit mdy gidm Do dd, mpt so md, GTSX diy chuyin sin xuat cua mo IQ thien MKTL it (Cao San: 02 mdy; Nui Beo 02 may; Hd bao gom: Tu: 02 mdy), mdy phai thud'ng xuydn hogt ddng - Cde y l u t6 v l ty nhien: Dgc trung chinh Id duel khu vyc day md se Idm giam nang suit cdc y l u t l v l dde dilm dilu kign dja chit, dilu thyc hipn mpt cdch rd r$t kipn v l thd'l tilt vd h|u - Doi vd'i khdu ngp n l hipn cua cac md - Cdc y l u t6 v l ky thult bao gom: Ky thugt, Tong Cdng ty Cdng nghlpp Hda chat Md-Vinacdng nghp san xuit, nang lup'ng, nguyen vgt comin dam nhgn, thuoc n l vd vgt lipu n l su KHCNM S 1/2015 * CNKT LQ THIEN ®" Thong tin khoa hpc cong nghg mo dgng dypc san sgdt nydc dd giup cho eing tde nap no chu dpng Quy m i mpt vg n i d mit s i m i than l i thidn Idn nhy: Khii lypng dit dd mit vg n i hipn tai trung binh dao dpng khoang 60.000*80.000m' tyong dng vdi khii lypng thuic n i 25.000*45.000kg, cd biet c i nhijng vg no co quy md 55*70 t i n thulc n i , vypt 1,5*2 iln so vdi quy m i de xuat cdc thilt k i dd ldp Chat lypng dap vd trung binh 0,35*0,37 (dydng kinh cd hat), d i ty ip cd hat CO kich tCr 0,4*1 m, ehilm 12*16%, song, vdi mii DBTB khdc nhau, thi yeu clu v l mdc dp dap vd se khdc - Cdc mdy xCic tay g i u (MXTG) EKG 4,6 vd 5A da ciJ (cac may xuc ed thdi gian hoat dpng td 20*30 ndm), eing tdc tu, sii'a chda idn thydng xuyen dypc md than l i thidn tri ndn ndng sudt mdy xuc luin vypt so vdi dinh myc Tdp dodn TKV Cde may xuc thuy lye g i g ngypc (MXTLGN) c i dung tich E = 3*4,7m' hoat ding d cac ting sdg, dydi mdc thodt nydc ty chdy dd t h i hien yu vidt cOa nd so vdi MXTG: dp lyc len nen nho, CO ding, quy dao xiie linh hoat, xiic dypc d vi tri dydi mdc mdy ddng vd dd t h i hipn Id thilt bi khing thi thilu dype cac mo khai thdc xuing sdu Ndng suit eua may dat 101*115% so vdi dinh mdc cua TKV Ndng suit mdy xiie E = 6,7m' thye hi$n dat dypc Idn nhdt tai mo Cpe Sdu Id 2.185m'/ea, bdng 140% so vdi dinh myc vd ndng sudt MXTG 3Kr-10, E = 10m'aat2.199m=/ca, bdng 105,4% so vdi dinh mdc - Cing nghd vdn tai l t d phCi hpp vdi dilu kipn d i i ndi, kich thyde khai t r y i n g vd quy hoach thai eua cdc m i Hipn tai, 100% xe chd d i t dd cdc hdng xe CAT, Komatsu san xudt, ndng suit xe luin vypt dinh mdc ciia TKV Tuy nhidn, van tai ito cDng da bat diu bic l i nhype dilm cua n i , kdm hieu qua eung d i vdn tai vd chilu cao ndng tai idn, dypc t h i hipn qua eing tde t l chdc vdn tai d i t dd d i i vdi xe 36 t i n vd xe 40 t i n d eung dp td 3,5*4km nhy sau: Xe i t i 36 t i n Inai HM400-2R vd HD325-7R vdn tdi dit da thai d cung d i 4*5km, ndng sudt ciia xe thdp hon nang suit dinh mdc TKV vd chl dat 88*90%, trcng d i , xe i t i 55*96 t i n loai HD465-7&7R; 785-7 vd CAT773E&F; CAT 777D vdn l l KHCNM S 1/2015 • CNKT LO THIEN tai d i t da vdi cung dp 4+5km, nang suit xe cao nhit dat den 140% so vdi dinh mirc cua TKV Nhy vdy, cdc chT tieu dypc cac md thye hien hdng ndm dd dat hoae vypt so vdi chi tieu giao khoan cua Tap dodn TKV, mang lai hieu qua san xuat kinh doanh cho mo Trong thdi gian tdi, cac md than lp thien tilp tge khai thac xuing sdu, cung dp van tai, ehilu cao nang tai tang, de giam ehi phi san xuat (CPSX), ndng eao hidu qua khai thdc cho mo, cln xem xet tinh ding bp t i hpp mdy xue - i t i eho phii hpp vdi dilu kien khai thac, eung d i van tai dit da hang ndm cua mo Nhd Idm tot cing tdc quan ly ky thudt, da tdp hpp tap the nhyng ngydi cd trinh dp, nang dpng, sang tao vao hoat dpng nghidn cyu phat triln ky thudt, dp dgng ky thgdt mdi, hpp l)> hda san xgit, khoi ddy dpng lyc manh me nhit cho sy phat triln cho cdc m i lp thien noi ridng vd Tap dodn TKV nii chung D I xudt hoan thien mpt sd giai phap cong nghp nhdm tang nang sudt, giam GTSX d cac mo than Id thien Trong giai doan td den 2020 vd giai doan sau 2020, ede md lo thien idn cua TKV deu phai khai thdc xuing sdu dydi myc thoat nydc ty ehdy Do vay, chilu sdu m i edng edng tang, kich thyde khai trydng chat hpp, cung dp vdn tai xa, chilu cao ndng tai idn, xe oti phai len die lien tgc, ty ip dat da phai khoan n i tang, nydc ngim se nhilg, ty lp thgic no chiu nydc cung tang len, moi trydng lam vipc khing thuan Ipi Mat khde, cdc m i than l i thien hien tin tai nhilu chiing icpi thilt bi khdc nhau, chit lypng khac nhau, thing s i Idm vide khae nhau, cung lam vipc tren eiing dieu kipn mo Mit s i mo dd diu ty mit s i iopi thilt bi co cing suit Idn nhy mdy xuc cd dung tich td 8*12m' vd ito eo tai trpng 91*96 tan, song, ede chiing iopi thiet bi ndy v i n dang Idm vipc tren ede thong s i HTKT dypc thilt k l cho loai DBTB nho, nen chiing ehya t h i phdt huy h i t dyoc ndng lye eua chinh nd Ngodi nhdng y l u t i ve mdt k j thudt DBTB cdc khdu cing nghp nhy tren, thi ede mo ein chiu anh hydng cua cde y l u t l v l ty nhien, dia chit mo, cing tde TCSX, ddo tao ndng cao trinh dp vd b i tri lao dpng cho edn bp cing nhdn Thong tin khoa hoc cdng nghe mo vien eua don vi dypc lam vide diing vi tri theo ndng lyc vd yeu c l u cdng viec ddt theo k l hoach sdn xudt kinh doanh cua doanh nghiep md o l khac phyc dypc nhyng t i n tai neu tren nhdm tdng NSLD, giam CPSX, d l xudt va hpdn thidn mit s i giai phap cing nghp nhy sau: Cdn cd vdo m i i quan hp giya dung tich gdu xiie vd tai trpng xe ito ciia mo, TCSX eho cac td hpp BBTB bde dat da va than dp dung cho md vdi cac thilt bi khai thdc hien c i cho thay: Tyong dng vdi s i gdu xiic sy dung, he so chat tai theo dung tich thung xe vd tai trpng xe tyong dng ed Giii phip 1: Sir dgng vi bo tri hgp ly DBTB sy khdc moi ding bp DBTB xuc bic hidn c d - vdn tai phli vdi cdc thiet bi hien cd d cde mo Hidn tai, cde md dang sy dgng 76 mdy khoan, dypc trinh bay d bang dd 43 mdy khoan xoay c l u (MKXC), 33 Tren co sd gia khai thae theo cung dp MKTL, tren 179 thilt bi xiic bdc cdc lopi co dung van tai trung binh cac khu vyc khai thdc tieh ty 3,1*12m', dd thilt bi xue boc chii mo, gia thdnh cde to hpp thiet b| hien cd cua cdc lyc g i m 66 MXTG 3Kr-4,6; 5A (E = 4,6+5m'); m i vung Quang Ninh the hipn d bang 08 mdy xuc 3Kr-8Y (E = 8m'); 04 may xiie SKTTren co sd dilu kien khai thdc cae mo, phdn 10 (E = 10m'); 01 MXTLGN o i dung tich gdu E b i khii lypng than - dit, t i c dp xuing sdu vd = 12m'; 100 MXTLGN c i dung tieh gau E = day ngang yeu edu hang nam, Cdc md c l n bo 3,4*6,7m' Cac mdy xiic chgy dipn h l u h i t c i tri thilt bi nhy sau: tuii thp tren 10 nam, nen tinh trang ky thudt chi - KV-1 (tren): Sd dung MXTG 3Kr-4,6;5A; dat loai C nhyng v i n dypc bao dydng thydng dung tich gau xiic 4,6*8m' vd d t i ty tai trpng xuyen dam bao hopt ding on dinh 55*58 tan van tai ddt dd Khi cln dau ty, se bo Bing I.BBTBxOc bSc - vin tii hidn cd * cic md Id thidn TT Miy 0(0 xuc Chiing loai Til trgng T i hpp BBTB xiic b i c d i t di PC760; ZX 860; CAT36S; EC-400 (E = 3,4*4,7m') VOLVOA40D, E;HM400; CAT769; HD326 32*36 tan K r - ; A ( E = 4,6*6,2m') CAT773; HD465-5; HD465-7; BELAZ 7555 55^58 tan PC-1260SP; ZX1200; (E = 6,7m') 3Kr-8Y, ( E = 8*10m') HD785, CAT777D 91*96 t i n VOLVO A35D; SCANIA P380, 310 23+32 tan PC-1800(E=12m') II T l hpp BBTB xiic b i c than PC750; ZX 850; CAT365; EC-400; (E = 3,4 *4m'i Bing Gii thinh xOc bdc vin tii cic td hgp hiin cd theo cung dO vin tii dit di tmng binh d cic md Gii thinh Cung dd trung binh Ong, km to hgp, dirri' tuvng T i hpp MX 3,4*4,7m' T i hpp MX 4,6*8,0m' + T o h p p M X C * m » + + Otd 36*40 t i n Oto 65*68 tdn 016 91*96 t i n KV tr6n cao 1,5*2km 33 798 30.742 KV gida m i 2,5*4,5km 65.347 62.397 60513 KV Siy md 5*7km 85.254 75.808 64.560 26.694 KHCNM S 1/2015 * CNKT LQ THIEN ®" Thong tin khoa hgc cong nghe m d Bing So sinh gii thinh cic td hop BBTB xiic bdc - vin til THI: rd TT Cac chi tieu OVT hgp MX 4,7m''dtd 36 tan THS.Td TH4: To r H ; Td TH3:T6 hgp MX hgp MX hgp MX hop MX 6,7m' - dtd 10m' - oto 12m' - dtd 15m' - oto 58 tan 91, 96 tan 120 tan f 38 tan 4,00 Cung v3n tai km So miy xiic to hpp cdi 1 1 S l tfl to hpp cdi 6 6 l o n g von ddu ty cho to hpp io«a 110.451 130.687 151.594 189.588 242.908 Gi^ thSnh boc xuc van tai aim' 96 231 96.578 106.499 108.906 106.943 II Cung dd van tai km 6,00 S6 miy xiic to hpp Celi 1 1 S i to to hpp cdi 7 7 Tong v i n dau tu cho to hpp io»a 123.841 170.602 221.217 268.918 366.492 Gi^ thSnh boc xuc, v$n tai aim' 107.316 102.761 110761 124.018 121.890 III Cung dp v3n tai km 6,00 S6 m^y xilc t l hpp cdi 1 1 So to t l hop cdi 8 8 T i n g von dau ty cho to hpp 10«d 136.358 189.061 242.994 293.609 387.841 Gid boc xiic, van tai aim' 129.356 138.925 125.012 139.115 136.812 sung chuyin dan sang t l hpp OBTB cing suit Idn nhy khu vyc giya mo - KV-2 (giira): Sir dgng ket hpp MXTLGN ed dung tich 5,2^12m'; MXTG 10m' hipn c i vd MXTL dau ty tri loai ed gau xiie 10+12m' kit hpp vdi dti ty tai trpng 90+120 t i n de xiie boc vd van tai ddt da thi Chi phi cing doan xiic boc va vdn tai ddt 6i chilm ty Idn ty 50*60% chl phi khai thac than vd anh hydng tryc tilp den GTSX toan bg ciia mo De ed quyet dinh dung dan v l diu ttr d i i mdi he thing xuc b i c van tai cua cdc mo hien nham hp gid thdnh van tai ddt da cho cde md l i thien, danh gid hipu qua kinh t l cac to ^ - KV-3 (dudi): Sy dgng MXTLGN dung tich hpp DBTB xuc bic - vdn tai tren co sd so sanh; gau xuc 3,4*4,7m' de ddo sdu vd khai thdc than, V i n d i u ty, gia thdnh cdng doan, ting ehi ph! ito ty tai trpng 36*40 tan, ed kha ndng leo vdn tai, chi phi hien tai thye van ehuyen 6k doc Idn, ban kinh quay nhd nhy cac xe khung dd ty cde ting boc dat den npi thai (bang 3) dpng ciia cac nydc ty ban de van tai dat da va Can cy vdo tinh todn gia to hpp bic than nguyen khai khai thac m' dat da d bang 3, hinh vd khii lypng dit Giii phip 2: Bau tu to hgp BBTB khai thac cd bic, cung dp van tai ddt da hang nam cua cac cdng suit phii hgp vai quy md cdng suit cac mo md than lp thien thuic Tap dodn TKV giai than Id thidn thugc Tap doan TKV giai doan doan sap tdi, d l xuit lya chpn to hpp BBTB cho tdng mo nhy sau: tdi a Thiet bi xuc boc, van tai D i i vdi cac mo Id thien co c l u CPSX KHCNM s d 1/2015 • CNKT LO THIEN * Md Cao Son, Cpe Sau, Tdy Nam Bd li/lai (Khe Chdm 11 - LT), Ha Tu: Khoi lypng dat boc Thong tin khoa hoc cong nghe m o bdc khdng I6n, tu 6-^16 tripu m^/ndm, cung dp van tdi d i t dd hang nam tip 2^5km, thd'l gian tdn tai md ddi, san lupng khai thdc on djnh Lya chpn td hpp DBTB eho cdc md thu ty uu tien sau:TH2-j-TH1 DBTB xuc boe vd v^n tai phu hyp vd'i dieu kien khai thdc vd quy md cdng suit cua cac md dup'c the hien d' bang Thiet bi khoan - Cde thdng s6 ve dieu kien ty nhien va muc dp khd khoan cua cac md Id thien Dya vao sd lieu tong hap tip ddc diem (^a chit cdng trinh tren -•-IHI l i r t p u i v a d IBMtS, -t-THirahTpMI cdc khu vye cua md Id thi§n tren cdc mgt cat dja -•-neijhniwiuinj a 1631.96 an n u WlOTM): - ã - t l B Tjh^ ôXJ5rt uueisn chit - DBTB xue boe, van tai: Cdc md Id thien dau Hinh Biiu dd quan h$ glOa cung dO van tii - gii tu eae thiet bj xuc dung tieh gau tu E = thinh cOa td hap DBTB xOc bdc - vin tii 3,4^15m3, dtd ed tai trpng q = 58-i-138 tin tu 20-^51 tripumVnam, cung dp van tai dat da tu - Khi dp dung hinh thuc vgn tai lien hpp, cd &i-7km, thd'l gian ihn tgi md dai TH3 cd gid thdnh kit hyp vgn tai d i t bang bang tdi, true tai, true xuc ble, vgn tai thip nhit Lya chpn to hpp ndng xe Vd'i thiet bj van tai nhu tren, lya chpn DBTB cho cdc md theo thu ty uu tien sau: THS thiet bj khoan c l n chu y dud'ng kinh phu hpp -> TH2 -> THS -J- T H ^ TH dam bdo ed' hgt no mln ddp ung cho kieh thud'c * Md Deo Nai: D i t bdc ty 15-^42 tripu m^/nam, cua hdm cua thiet bj nghien dgp cung dO vgn tai d i t da hdng nam ti> 4H-6km, thd'l * Ket qua lya chpn: Dya vdo cdc s6 lieu co' gian t6n tgi md ddi TH3 cd gid thdnh xuc b6c, SO' trdn, dh xuat lua chpn dau tu may khoan cho v§n tai thip nhit Lya chpn t6 hap DBTB cho cdc md than Id thien thd hien d" bang cde md theo thy tu uu tidn sau: TH2 -^ TH3 -> Giai phip 3: Hoin thi$n cong ngh$ khoan, no TH1 ting cao * Md Na Ducng, Khdnh Hda: Khoi lupng dit Hipn nay, thyc te qua trinh khai thdc, md than Id thiin Bing DBTB miy khoan - miy xOc - OtO cua cic Tinmd Bat bdc, la'm' Chgn miy Chgn may xuc, E Chgn dtd vgn tai, q (m'j (V khoan dill, mm Loai may Dat da Than Dat da Than 33,3+51,3 B$p ddy; xoay c l u 260+300 Thuy lyc; xoay cau 10+12 3,6+4,7 91+120 36+55 15,6+36 Bdp ddy; xoay c l u 230+300 Thuy lyc; xoay cau 8+10 3,5+4,7 91+96 36+40 15,4+17,4 Dip ddy; xoay c l u 230+280 Thuy lyc; xoay cau 5,2+6,7 3,5+4,7 55+58 36+40 Tdy Nam B d Mdi 19+37 BSp ddy: xoay cdu 200+250 Thuy lyc, xoay cau 6,7+10 3,6+4,7 91+96 36+40 HdTu 18+42 Bdp ddy; xoay c l u 250+300 Thuy lyc; xoay c l u 6,7+10 3,6+4,7 58+91 36+40 Na D y o n g 12,6+16 Xoay 165 Thuy lyc; 4,5+6,7 2,8+3,4 65+58 32+36 Khdnh HOa 6+8 Bdp ddy 140+165 Thuylyc 3,5+6,7 2,8+3,4 56+58 32+36 Cao Son Cpe Sdu CtoNai PP khoan KHCNM S6 1/2015 * CNKT L O THIEN ®" Thdng tin khoa hoc cdng nghe mo nhilu mo dd sy dgng no cac ting c i chieg eao idn hon so vdi ting thilt k l Qua khao sdt trdn cdc md Ha Tu, Cao Son, Deo Nai, Tdy Nam Dd Mdi, no tren ede khu vyc md rpng bien gidi de tap cdc tang mdi phin tilp gidp vdi dia hinh ty nhien, thydng phdi khoan cdc Id khoan cd chilu cao Idn Id thydng gap Trong nhdng trydng hpp nay, cing tdc khoan n i van dype tiln hanh thudn Ipi Tuy nhien, viec dp dgng n i ting eao dypc tinh toan c i co sd khoa hpc thi ehya dypc dat qua trinh san xuat eiia cdc md than lp thien Nam 2008, Vipn Khoa hoc Cdng nghe Mo Vinacomin da dype B i Cing Thypng giao thye hipn d l tdi nghien cdu dp dgng cing nghe khoan n i vd xgc bic ting eao cho cde md than l i thien Vipt Nam D i n nam 2012+2013, Tap dodn TKV da giao cho Cing ty CP than Cao Son - Vinacomin phii hpp vdi Vipn Khoa hpc Cing nghp Md - Vinacomin thyc hipn d l tdi dp dgng thy nghipm cing nghp nn vd xiie hoc ting cao eho mo than Cao Son Qua thdi gian thy nghiem n i thy dypc bai n i vdi vu n i c i vg idn nhat len den 70 t i n thuoc n i , theo kit qua ddnh gid d cdc bdi n i sau xuc bic dd giam dypc trung binh 3%, tyong dyong vdi khnang 890 ding/m' De c i CO sd kiem chdng dypc cdng nghd khoan no va xuc b i c ting cao mang ipi hidu qua d i i vdi cae m i id thien, kiln nghj cae mo than lp thien Idn tilp tge thy nghipm d l hodn thipn cing nghe va dp dgng rdng rai d mit so mo Qua tai lipu dia chit thay ring, dat dd cac m i phin Idn Id lopi eupi, san kit, d i kien co f = 8+13, dung trpng d i t da y = 2,63*2,72 tin/m' Mdc d i ndt ne cip 1I*V Khd ndng khoan sdu c i Bing Cdc thdng sd khoan nd mln ting cao rr Chl tiiu Chieu cao tang, m Don vi 20 18 Bd cirng dat dd, f Du'dng kfnh 15 khoan, dk Mdt ao nap thuic, P 25 9+11 11+13 9*11 11H3 9*11 mm 0,25 0,25 0,25 0,25 0,26 11*13 0,25 kg/m 43,176 43,176 43,175 43,175 43,176 43,175 Chi tidu t h u i c n i , q 0,47 0,55 0,47 0,56 0,47 0,55 Chilu sdu Id khoan, Lk m 20,5 20 22,6 22,5 27,6 27,5 Dydng khdng chdn lang, W m 8.2 8,1 8,3 8,3 8.4 8,2 Khoang cdch giira cdc Id khoan hdng, a m 8,5 8,0 8,5 8,3 9,5 8,5 Khodng cdch gida cdc hdng 16 khoan, b m 7,6 7,0 7,5 7,2 8,6 7,5 10 Chilu ddi nap t h u i c 16 khoan hdng ngodi, Lt m 13,8 14,0 15,6 16,5 21,9 22,3 11 Chilu ddi nap t h u i c l i khoan hdng m 12,6 12,1 14,0 14,4 22,2 20,4 12 Chilu ddi nap bua 13 khoan hdng ngodi m 6,7 6,0 7,0 6,0 5,6 6,2 13 Chieu ddi ngp bua 15 khoan hdng 14 S u i t phd dd, S 15 Chieu rOng ddi k h i u , A m 7,9 7,9 8,6 8,1 6,3 7,1 m'/m 57,72 53,04 68,68 66,01 73,12 69,76 m 23,7 22,1 24,0 22,3 24,3 23,2 KHCNM S6 1/2015 * CNKT LQ THIEN Thong tin khoa hpc cong nghg mo hipu qua (3 choing) doi vdi mdy khoan dipn CBlll-250 id 22m, MKTL D45KS Id 25m Gdc nghidng sydn ting a = 60*75° Chilu cao ting dao ding phpm vi t d 18*25m Thilt bi huy dpng d l phuc vg n l ting cao Id cdc thilt bi cd cing sgdt Idn g i m cdc thiet bj nhy; MKTL D45KS; MXTG 3Kr-10A; PC-1B00 O t i vdn tdi c i tai trpng q = 91*96 tin, ngpdi ra, c i n sy dgng mdy gat de cat ngpn ding dd n l mln c l n thilt Thing s i khean - n l ehp tdng bdi n i d i i vdi dilu kidn m i l md cg the, c l n dypc tinh tndn eg t h i trcng tyng hp chilu, thing s i khoan - n i ting cao dype t h i hidn d bang Giii phip 4: Ap dgng cdng nghg vgn tii lien hgp phd hgp vdi cic md than Id thiin sau Vdn tai Id m i t trnng nhyng khdu co ban ddy ehuyin cing nghd khai thdc khodng san bing phypng phdp l i thien Trong co c l u GTSP, ehi phi vdn tai chilm ty Id eao nhit, thydng t d 40*45%, m i t s i trydng hpp, nhit la d i i vdi cdc mo l i thidn sdu md sy dgng i t i don thuin de vdn tai, ty trpng d i chilm tdi 66+70% Gid thdnh van tai luin luin thay d i i theo chilu sdu khai thde cua m i , vdi quy luat ding biln Nhyng vdi cdo hinh thde vd thilt b| vpn tai khdc thi myc dp tdng chi phi tang chilu sdu khai thdc id rdt khdc Vdn tai bdng d t i don thuan tdng nhanh nhit sc vdi ede hinh thdo van tai khde Chinh vl mdc d i quan trpng nhy vdy, vile lya chpn m i t hinh thdc vdn tai khdc thay t h i cho hinh thde vdn tai dit dd bdng i t i don thuin cdng dypc nhilu nhd khna hpc • i ^.^' i^^^"''''^ s^*^^ - Vdn tai lidn hpp i t i - tryc tai c i gid thdnh thdp hon so vdi i t i - bdng tdi vdi cdc md c i chilu sdu khai thdc _ ^^^*^ til "W k j thudt vd qudn \
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