Thong tin khoa hoc cong nghe mo GlOn THIEU MOT SO HE THONG KHAI THAC, CONG NGHE KHAI THAC AP DUNG TRONG KHAI THAC QUANG HAM LO TS DAO DANH PHUgNG Vl§n Khoa hgc Cdng ngh^ Md Vinacomin Biin djch tw tdi[.]
Thong tin khoa hoc cong nghe mo GlOn THIEU MOT SO HE THONG KHAI THAC, CONG NGHE KHAI THAC AP DUNG TRONG KHAI THAC QUANG HAM LO TS DAO DANH PHUgNG Vl§n Khoa hgc Cdng ngh^ Md-Vinacomin Biin djch tw tdi liiu: "Mdt sd phwang dn md vfa, chuin bi rugng md vd khai thac qudng bdng phwang phdp him Id", bdn tiing Nga, NXB Nhedra-Matxcava 1972 He thong khai thac kha'u duoi Ban chat vadieu kidnap dyng Hp thing khai thde khlu dull Id hp thing khai thde vdi khoang khong gian khai thde md, dd than qugng 6wgc khai thde blng guang khlu dull, chlng giu khoang khdng gian khai thde blng ede tru bao vp Id qugng hodc dd (trudng hgp than qugng ed dd) Trudng hgp than qugng ed chilu ddy khdng Idn (Im 2m), thay vi d l Igi trg bao vp, cd t h i xIp da thai 6k 6a ndc, hoge xdy dyng cde trg bao vp nhdn tgo Trong he thing khai thde ndy, ngudi ta khdng chia ting hoae rudng md thdnh ede bile, md thye hipn khai thde blng guang khlu dull, clt tii ede dudng Id chuin bj Dien tich eua guang khlu chinh blng dipn tich dudng bien cong nghipp eua than qudng vd se tgo nen khoang khdng gian da khai thde rdng Idn He thing khai thde khlu dull thudng 6wgc dp dgng cdc dilu kipn dd vdy quanh vd qudng eiing, b i n viing, than qudng nam ngang, thoai vd nghieng vdi chilu ddy - 7m vd thich hgp than qugng c6 cde khu vyc qudng ngheo, da xam nhdp, 6k lgi Idm tru bao vp thay t h i cho ede tru qugng, nham giam t i n thit tdi nguyen Trong hp thing khai thde khlu dull, t i n thit quang chilm 10% vd Idn han, vi vgy, mgc du quy trinh cong nghp khlu dan gian, gia thdnh khai thde quang thip, nhien chf nen dp dgng khai thac cdc khoang sdng cd qugng gis trj khong cao, hoge cdc khu vyc khdc dp dgng cdc hp thing khai thde khdc Trong cdc trudng hgp chilu ddy than qugng Idn han 7m, nam ngang hoac chilu day than qugng Idn han 5m, nim nghieng thi he thing khai thde khlu dgli giam hipu qua, d n chuyen sang dp dgng cac he thing khai thac khdc nhu hp thing khai thac buIng - cpt (Thdng tin KHCN md da gidi thipu d s l 11/2011) P'®"^ "^^^^e bipt^cua hp thing khai thde khlu ^ " ° ' ®° ^°'' ^^ \^°"9 ^^^^ ^^^^ ^^°^3 - cot Id P^^i trung^ehuyen quang da khai thde den ^^c vj tri boc xep khoang khdng gian khau, ^o"' "^leu each thiic chuyen qudng khde nhau, ^^^ ^^^^^ y^o the nam eua than qudng vd theo ^ ° '^ ^o- bo tn eae duang lo ehuan b;: - Trudng hgp than qudng nim ngang vd rit thoai, gdc die d i n 2°30', trg phang thi qudng 6wgc chuyen ehd bang godng vd tdu ll •' -' in J.:—.zv