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Thong tin khoa hoc cong nghe mo y, NGHIEN Clhl AP DUNG THUT NGHIEM DAN CHONG MEM LOAI ZRY trong di§u kiin cac via than co chieu day trung binh, goc ddc tr€n 45° tai Cong than Hdng Thai The flexible sh[.]
Thong tin khoa hoc cong nghe m o y,NGHIEN Clhl AP DUNG THUT NGHIEM DAN CHONG MEM LOAI ZRY di§u kiin cac via than co chieu day trung binh, goc ddc tr€n 45° tai Cong than Hdng Thai The flexible shield ZRY, which has been used in the diagonal longwall mining technology for the coal seams having medium thickness and the dip angle over 45° at Hong Thai coal Company, has some dominant advantages compared with the previous ones such as its simple structure, lightweight, easy in installation or replacement, highly suitable to the variation in thickness and dip angle of the coal seams In this paper, the authors represent some results from the pilot application of the above mentioned to Hong Thai Coal Company recently TS TRU'ONG eCfC DU ThS.TRAN T U A N NGAN TS Le DO'C NGUYEN KS TRUONG T I E N QUAN Vien Khoa hoc Cdng nghd Mo - Vinacomin Bidn tip: TS Truong Ddc Dw Theo k l hogeh san xuit kinh doanh cua C6ng ty than Hong Thdi giai dogn 2014-^2020, san lugng than nguyen khai nam 2015 tang len den 1,25 trieu tan, rieng san lugng khai thdc tiF cac via than khu Trang Khe dy kiln Id 0,6 trigu tin/nam De dgt k l hogch d6, C6ng ty phai huy dpng khai thdc toi da tru lugng cac khu vye via day trung binh, d i e tren 45° thupc khu Trdng Khe, Trong do, mpt phan tru lugng co dilu klgn dja chit thuan Igi thupc via 12 khu Trdng Khe II (khoang 645 nghin tan) dugc quy hogch dp dgng cong nghe khai thae co gidl hoa dong bp su dgng to hgp dan chong 2ANSH Doi vdi phin tru lugng via die c6n lai khoang 1,84 trigu tin (tap Trong nhung nam gan day, de khai thae cdc trung tai via 9b vd vi'a 10 khu Trdng Khe II, vdi via ddy trung binh, gdc d i e tren 45°, Cong ty chilu ddy via thay d l i tu 0,8^4,4m, via eo tu -^ than Hing Thdi da dp dgng edc loai hinh eong Idp dd kgp vdi tong chieu ddy tu 0^1,8m), ngh# khai thae gim: eong nghe co gidi hda dong to hgp ddn ching 2ANSH c6 dieu kien dp dgng b l khai thdc Id chg chia cot theo hudng die, miln chilu ddy via tu 1,1 ^2,2m vd khd khiu than bang mdy bdo, chong gii> bang t l hgp ndng phd da kep cua mdy bdo kem nen khai thdc ddn chong 2ANSH; cong nghg khai thdc 16 dpc phan tru lugng ndy se khong phu hgp Do do, via phdn ting, ching tdng cudng guong 16 chg Cong ty than Hing Thai da lua chpn c6ng nghg blng gid thuy lyc di dpng XDY Thyc t l san xuat buong -16 thugng cheo d l khai thdc Tuy nhien, cho thiy, e6ng nghg khai thdc co gidi h6a dong cong nghe khai thdc buing -16 thugng cheo co b | su dgng t l hgp 2ANSH da khang dinh dugc t h i eho san lugng vd nang suit lao dpng cao tinh uu vigt vd higu qua kinh t l eao khai thdc hon cong nghe khai thae 16 dpc via phdn tang, tgi mo vd hign dang dugc quy hogch dp dung song khIi lugng dudng 16 chuan bj Idn (30-H cho nh&ng khu vye md ed dilu kign tuong ty 35m/1000T), ty le ton that than vdn d muc D i i vdi cdng nghg khai thae Id dpc vfa phan tang, cao (tren 33%), hon nOa, lai kho quan ly ve mat cde chi tidu kinh t l ky thugt dgt dugc cdn hgn an todn Vi vay, logi hinh cong nghg ndy chf dp chi, n6n thdi gian tdi, se khdng uu tien lya chpn dung tgm thdi 6e dap ung nhu d u trude mdt ve dp dgng k l hogeh san xuat ddi han eua san lugng mo, v l lau dai, Cong ty vdn co C6ng ty C6ng ty than Hing Thai hi$n dang quan ly va khai thae eac vfa than thupc khu Hing Thdi vd khu Trdng Khe pham vi tu muc +30 -^ 16 via Kit qua ddnh gid ting hgp tru lugng va dilu kign d\a chit ede khu vye phgm vi khai thdc cua C6ng ty cho thiy, tru lugng cdn Igi cua hai khu vyc khoang 6,35 tri$u t i n thupc edc via co ehieu ddy trung binh, goc d i e thoai d i n nghieng va die nghi§ng (khu Trdng Khe 3,9 trigu t i n , khu Hing Thdi 2,45 tri$u tin) Trong do, tru lugng via ddy trung binh, die tren 45° tgp trung chu yeu d khu Trdng Khe vdi tru lugng khoang 2,49 trigu tin KHCNM S 9/2014* CNKT H \M I-< Thong tin khoa hoc cong nghe m o Bang Thdng s6 ky thu$t cua mot s6 loai dan chdng ZRYcCia Trung Qudc TT Tiis6 Dem vj Ten thong so ZRY20/30L ZRYWaSL ZRY3e/4SL Chieu dai xa chlnii (xd ndc) mm 1260 1170 Chieu dai xa che chSn mm 850 660 950 Chieu ddi xa duoi mm 1200 1200 1200 Chieu rpng gia than gid mm 320 320 320 Khoang tSm gia \\hn mm 350 360 370 Hinh thiFC lien Icet giu'a cac gia Xich Xich Xich Chieu cao ch6ng giO cija dan m 2,0*3,0 1,6 + 2,6 3,6 + 4,6 1942 Chieu day via ap dung phu hop m 2,0 + 3,0 1,6 + 2,5 3,6 + 4,6 Goc d6c via >450 >450 >460 10 Trong lu'o'ng moi gia Kg 380 + 400kg - - ' Xi din hadng,2 Xi ndc (xi chinh):3 Xi che chin,4 Xi dudi, 5- Piston 6iiu khidn xi dudi a Cdu tao din chdng c Kef cau xich lien kdt cic dan chong ^ p^^ ^^^^g ,Q^, jj^y Hinh Din chdng mem lo^i ZRY chu truong tilp tuc nghien cuu, tim kilm cong nghe khai thdc mdi, hieu qua hon de thay thi Thue hien ehu truong ndy thdng 11/2013 Cong ty than Uong Bi - TKV va Vien Khoa hoe Cong nghe Mo - Vinacomin da t l chue di tham quan khao sat cong nghe khai thae su dung ddn chong mem loai ZRY tai mo Hing Viin - Tan Cuong - Trung Quic Kit qua cho thiy, eong nghe khai thae co dieu kien dp dung tuong ty nhu dllu kien cac via than ddy trung binh, goc doc tren 450 cua khu Trdng Khe Do vay, cac ben da thong nhit de xudt nghien cuu dp dung KHCNM S 9/2014* CNKT HAM LO cong nghe khai thae su dung dan ching mIm logi ZRY de khai thdc thu nghiem dilu kign ede via eua Cong ty than Hong Thai Dan ching mem loai ZRY (hinh 1) cua Trung Quoc la t l hgp gIm nhilu gid ehing (vi ching), m l i gia chong co chilu rpng tCr 300-^320mm gIm doan (xd noe, xd che chan vd xd du6i), lien k i t vol bang xich hode khdp ban l l , khoang each giua eac gia ching tu 350 - 370 mm O bp phdn xd dudi dugc bo tri hg thong xilanh piston thuy lyc co tac dgng cho phep thay d l i chilu eao ching gii> Id chg mpt khoang Thdng tin khoa hpc cong nghe m d I Khoan Id giFong Id cha b Napndmin, thonggio c.Tiithan,ha din chdng theo tien 6Q Hinh Nguyen /)? lim vide cda din chdng mdm ZRY a Md hinh lip dit din chdng ngoii mit bing b Din chdng lip dit guung Id chiy Hinh Din chdng mim loaiZRY lip dit Id cho' Nguyen ly lap dat vd Idm viec cua dan chong nhit dinh vd h i trg cdng tdc dilu khiln di chuyin mIm ZRY 16 chg (hinh 2, 3) nhu sau: Mli ddn chong qud trinh khai thae Vol ddn ching mIm logi ZRY (bang 1), eho gia ching dugc bo tri lip dat 16 chg phdp khai thdc higu qua doi vdi dllu kien via cho mpt dau cua gia ching Id xd ddn hudng (1) than die nghieng din doc dij-ng co chilu ddy via bdm sdt vach via than, dau lai la xd du6i (4) tu 1,6^4,5m Trong nam gan day, d Trung ching true tilp xuong tru vi'a (hode nIn than) tgo QuIc, dd CO khoang 10 guong 16 cho thupc cdc thdnh diem chong eo ban cua mli gia ching tinh Hd Bac, Thanh Hal, Tan Cuong su dgng loai Gid ching duoe edn chinh eho doan xd noc ddn ching ndy d l khai thdc via doc, san lugng (2) luon d trgng thai nam ngang, phg thupc vdo mli guong 16 chg (co chilu ddi tu 60 ^80m) tu ehieu ddy via, chieu cao khoang khong gian Idm 80.000-^120.000 tIn/nam, nang suit lao dpng viec phia dudi dan chong dugc tri tu 1,6 tryc tilp tip 6,0-^ 10,0 tin/cdng Hien tgi, mo than ^1,8m Dpc theo chilu ddi 16 chg co dp die 25 •;• Hing Viin - Tan Cugng dang khai thae 16 chg d 28° so vdi mat phang ngang, edc gid ching via Bl bang so d l eong nghg khai thdc guong duoc lip dat vdi khoang cdch 350-370mm vd 16 chg xien cheo, khiu than bang khoan no duge lien kit chdc chin vdi bang kit d u ching giu' bang ddn chong mem logi xich tao thdnh hg thong ddn chong mIm dpc ZRY36/45L Via than co g6e die 45° ^ 55°, trung theo chilu dai 16 cho Khi ldp dat dan chong se binh 510, via e6 ehua Idp dd kgp day 0,3 tiin hanh trai Idp ludi thep bao phu phia tren cdc •!-0,8m, da vach, trg via Id Idp b|t kit ben vOng, gia ching d l ngan dat dd roi vdo khong gian Idm than c6 hg s i kien e l f = 2-^3, cd tinh ty chdy vd vigc phia dudi Qua trinh khai thdc 16 chg se tiin nguy hilm v l n l bgi than San lugng id chg binh hdnh khoan n l khau guong thdnh tung ldp qudn 300 tin/ngdy, ndng suit lao dpng dgt 4,0 vdi tlln dp 0,8m Sau khau than, dan ching dugc dilu khiln di chuyin xuIng phia dudi vdi tin/c6ng KHCNM S 9/2014' CNKT H \ M U ) Y///////^'//^/////////////777/////\ a Tru'dng hop di lai tm than bao ve Id doc via vinb tii Truong hop khdng de lai tru than bio vd Id dpc via vin H Hinh So 66 cong nghe khai thicId cha su dung dan chdng mdm ZRY budc di chuyin tuong ung vdi tiin dp khau de Id chg Trong qua trinh khai thdc cung tien hanh ding thdi eong tdc ddo cup thao than vd thong ching giCi' khoang khong gian 16 chg Ban chdt cua so d l cong nghe khai thdc 16 gio vugt trude guong Id chg, khoang each giua eho ching giij' bang dan mem logi ZRY nhu sau: cdc cup t u 6,0 -^ 8,0m, cho trude guong 16 - v l cong tac chuan bi: Khu vyc khai thdc chg luon tri t u -^ cup (hinh 4a) dugc chudn bi cac cot ddi theo phuong, + Trudng hgp khong giu Igi 16 dpc via van tai: chia tang (hoac phan tdng) bang cac dudng 16 Cong tac chudn bj 16 chg nhu sau: tgi mue thong doc via thong gio vd 16 doc via van tai (hogc 16 gio vd muc van tai cua t i n g (hoac phan tang), dpc via phan tdng) Chieu eao theo phuong ddo cdc dudng Id dpc via thdng gid vd 16 dpc via thing dung cua ting (phan tang) Id chg tie 40 van tai (dpc via phdn tang) bien gidi khai ^45m, tuong ung vdi chilu dai Id chg xien cheo trudng Tai day, tien hdnh md 16 thugng khdi tu 80 -^100m (16 chg co goc d i e bllu kiln 25 -^ dilm xien cheo t u 16 dpe via van tai len 16 dpc 28°) Chieu dai theo phuong cua 16 chg t u 600 via thong gid vdi goc d i e bieu kiln so vdi mgt -^ 800m, nhien, chieu ddi theo phuong cua 16 phang nam ngang tiJ- 25° -^28°, chieu ddi tu 80 ^ chg phg thupc vdo dllu kien dja chit vd so d l 100m Tai thugng khdi dilm ndy se lap dat dan khai thong chuan bj cua khu vyc dp dgng, Tuy ching mIm d l khai thdc Id chg (hinh 4b) thupc vdo vigc eo gii> igi 16 dpc via vgn tai cho - Ve cong tac khai thae Id cha: Cong tac khiu khai thdc tang dudi hay khong ma chudn bj 16 guong dugc thue hien blng khoan n l min, trinh chg cho phu hgp, eg thi: ty khdu t u dudi len thdnh tung dogn eo chilu + Trudng hgp giO' lai 16 doe via van tai ( d l lai dai 10 -^ 20m, tlln dp khau guong 0,8m/ehu ky trg than bao ve): Cong tdc ehuan bj 16 chg nhu Ching giu Id chg bang he thong cae dan ching sau: tai muc thong gio vd mue van tai cua tang mIm ZRY duge lien kit vol dpc guong 16 (hoac phdn tang), dao dudng 16 dpc via thong chg bang xich Khoang each giua cac dan chong gi6 vd dudng 16 dpc via van tai (dpc via phan Id 350mm, phia tren xa dan dugc trai ludi thep tdng) bien gidi khai trudng Tu 16 dpc via van giu I n djnh noc vd dam bao thuan lgi thu hii tai d vj tri bien gidi khai trudng, dao cap cup thao ddn Phia chdn 16 chg luon tri doan 16 chg than va cup di lgi dau tien, khoang each giua hai nam ngang c6 chieu ddi 10 -^15m, phia diu 16 cup theo phuong tu -^ 8m Chilu ddi cup chg tri dogn 16 chg nam ngang e6 chieu ddi thupc vdo chilu rpng trg than d n d l lai bao ve 15 ^ 20m Sau mdi chu ky khai thdc, cae dan 16 van tai (til thilu la 5,0m) Tai dilm dung ddo ching t u djch ehuyin theo hudng khiu guong cup, tlln hanh md 16 n i l thong hai cup, tu 16 n i l mpt khoang cdch bang tien dp khau nhd dp lyc tilp tuc md thugng khdi dilm xien cheo len eua da phd hoa phia tren dan chong va trpng 16 thong gio Thuong khdi dilm xien cheo co goc lugng ban than ddn Theo tlln dp djch chuyin do, die bilu kiln so vdi mat phang ndm ngang tu doan dan ching phia chan 16 chg nam ngang se 25°^28°, chilu dai tu 80 H-IOOm Tai thugng khdi dai them va dogn dan ching phia 16 thong gi6 se diem se lap dat dan ching mIm d l khai thdc ngdn di Vl vay, sau mpt so chu ky khai thae nhit KHCNM s o 9/2014' CNKT HAM L Thong tin khoa hoc cong ngh^ md djnh se phai thdo thu hIi bdt cac dan ching d chdn Id chg d l chuyin len l i p dgt b l sung d Id dpc via thdng gid tilp giap d i u 16 chg - Vi cong tac v$n tai than: Trudng hgp giu lai 16 dpc via vdn tai, than khai thdc tip guong Id chg ty tnrgt tren mdng kim loai xuIng cup thdo than vd dugc thdo xuIng mdng cdo Id dpc via vdn tai Trudng hgp khong giu' Igi Id dpe via vgn tai, than khiu guong ty trugt tren mdng kim logi xuIng mdng eao 16 dpe via van tai Sau dd, tu Id dgc via v§n tai than dugc mdng cdo van ehuyin din thugng thdng gio van tai phia trudc d l van chuyin ngodi theo hg thong van tai chung cua khu vye ranh thodt nudc tren cdc dudng Id dugc thilt k l vdi dd d i e phia ngodi %o va thoat ngodi mat bang theo he thong thodt nudc ehung cua mo Dya tren co sd dac tinh cua cdc loai ddn ching mem ZRY, ban chit eua so cong nghe vd dieu kien dja chit cdc via than co chieu ddy trung binh, gdc d i e tren 45° (eg t h i eua via 9b vd via 10 mue +30/+200) khu Trang Khe II, Cong ty than Hing Thai da phii hgp vdi Vien Khoa hpc Cong nghe Mo - Vinacomin nghien cuu vd lap "Dy dn d i u tu dp dgng thu nghiem edng nghe khai thdc 16 chg xien cheo, chong giu bang ddn mem ZRY tgi Cong ty than Hong Thai" - Ve cong tac thong gio: Thong gio cho 16 chg dugc thyc hign nhd hg dp chung cua khu vye: Gio sgeh tu ngodi trdi theo he thong dudng 16 khai thdng, chuin bj cua khu vyc 16 chg len 16 dgc via vgn tai, cup thdo than (nlu c6) len thong gl6 cho 16 chg Gio thai tu 16 chg len 16 doe via th6ng gi6 vd thodt ngodi trdi theo he thing cae dudng 16 thodt gio thai chung cua todn mo - vi cdng tic thoit nuac: Nudc thodt tu khu vyc khai thdc 16 chg ty chay theo he thing Dy an da phdn tich vd xde djnh duge edc thong s i cua so d l cong nghe khai thdc 16 chg xien cheo, ching giu bang ddn mIm ZRY tgi C6ng ty than Hing Thai (bang 2) Qua tinh todn xdy dyng hp chilu ching giiJ' 16 chg, hp chieu khoan n l khai thdc, to chuc san xuat 16 chg, cdc chi tieu kinh t l - ky thuat co ban cua 16 chg dilu kien via 9b dugc gidi thieu bang Kit qua phan tich kinh t l cho thay, vdi tong Sdng 2, Tdng hop cic thdng s6 cua so dd cdng nghd khai thic Id cha xidn chdo, chdng gid bing din mim ZRY t9i Cdng ty than Hdng Thii TT Kt hi^u Bern vi C6t cao mu-c t h i n g gi6 cua tang khai th^c hlg m6t +206 C6t cao mi>c v$n tai cua tang khaj thae h.t m6t +40 G6c d6c via trung binh a d6 48 ChiSu cao di/ng ciJa tang H met 165 222 C^c thdng so Solwip^g Chi^u cao nghieng cua tang H„ met S6 phSn t i n g 16 cha Np, Phdn tang Chifeu cao di>ng cua m6t phSn t^ng Hp, met 56 Chieu cao nghigng cua mdt phan tSng H"p, met 74 Chieu cao tn,i bao v$ 16 dgc vfa v^n tai cua m6i phan t^ng - Theo chi^u cao du-ng H",, met 11 Theo chi^u cao nghiSng H",r ma 15 44 10 Chi^u cao du-ng cua 16 cho11 ChlSu cao nghiSng ciJa 16 cho' Hic met H\ ma 59 12 Gdc d6c 16 chg' so v&l m$t p h l n g n i m ngang 36 m6t 28 dd 39 13 Chi^u ddi cua 16 che xl6n ch6o U 14 Gdc gi&a Id chg' vA 16 dpc via van tai 16 KhOeing cdch vuvt tnr6c theo phuang giOa dau vd chdn 16 cha T AL mdt 73 16 Chidu ddi theo phi/ang Id cha Lp mdt 270 KHCN.\IS09/2014'( N K T I U M L O 94 Thong tin khoa hoc cong nghe mo Bang Bang chf tieu ffinh td iiy thuat cOa Id chet Don vi Khoi luKmg Chi^u ddy via trung binh mdt 2,5 Goc ddc via trung binh 48 Chidu cao nghieng phan tdng khai thae dp mdt Chieu ddi [6 cha xien chdo met 94 Goc ddc Id cha 28 Trong lu'ang thd tich cua than Tlni> 1,72 He so kien cd cua than (/) e TT Ten chf tieu 69 - Tidn dd khai thae thi^c te mdt chu ky met 0,8 1,27 Tidn dd khdu theo phu-ang cua Id cha met 10 So ca hoan thdnh m6t chu kJ" ca 11 He sd hoan chu ky 0,8 12 S6 ca Idm vide ngdy - ddm ca 13 He sd khai thae 0,95 307 14 Ddn chdng loai ZRY20/30L dan 15 San lu'ang than khai thdc Ichu ky Tan 16 San lu'ang than khai thae - ddm Tan 368 17 San iLfong than khai thdc thang Tan 200 - 386 0,86 18 He sd chuyen didn 16 cha 19 Cdng sudt Id cha 20 Sd cdng nhan Id cha mdt ngdy - ddm ngudi 72 21 Nang sudt lao ddng true tidp T/cdng 6,1 144,6 T/nam 90.000 22 Chi phi thuoc no eho 1000 tan than 23 Chi phi kip no cho 1000 tdn than i bdng ddn mIm loai ZRY d l khai thae cdc via than e6 chilu day trung binh, goc die tren 45° tai Cong ty than Hong Thai c6 nhung uu dilm n i l bat so vdi cac loai dan chong trudc day nhu: k i t cau dan ching don gian, trpng lugng nhe, d l thdo lap KHCNM s o 9/2014* CNKT HAM LO hoac thay t h i , thich ung eao dieu kien via CO biin dpng v l chieu day va goc die Ket qua dp dung thu nghiem cong tgi Cong ty than Hong Thai se Idm tiin d l cho viec md rpng ap dung de khai thae cac via than co dieu kien dja chit tuong ty cdc mo than him 16 cua T$p dodn Cong nghiep Than - Khodng san Vigt Nam./ Tai lieu tham khao: "Du an