Thong tin khoa hpc cong nghe m o I PHI ONG PHAP KH.AO SAT DANH GIA DIEU KIEN DIA CO MO N A NGUYEN T \ C THIET KE CHONG NEO KET HQfP NEO CAP TS Trinh Dfing Hirag, KS Nguyen \ an Bac Viin Khoa hgc Cong nghe Mo - Vinacomin KS Pham Quy Manh Ban QLDA Khe Chdm Il-IV-Cdng ty than Hg Long-TKV Bien tap: TS Tnnmg Dur Dir T o m tSt: Cdng ngh^ chdng giir su dung neo cdt thep ket hgp neo cdp la logi hinh cdng nghe chong giir chu dgng V&i nhOng iru diem vugt trdi, day dugc cai Id cdng ngh4 chdng giir rdt ly tuang nhimg den vdn chua dugc dp dung rgng rai tgi cac mo than hdm Id Viet Nam A'i/ Irong nhirng nguyen nhdn ca ban Id khdu khdo sdt ddnh gid phuc vu thiit ke chong giir vdn chira dugc thtrc hien day du va bdi bdn Do cdn hodn thi^n khdu khdo sdt dank gid phye vu thiet ke, gdp phdn dp diing rgng rdi cong nghe chong giir chu dong ndy M d dau Ket cau chong giO bdng neo vd neo cdp da dupe ^p dyng ph6 bien d nhieu nudc trdn the gidi nhu My Anh, Oe Trung Qu6e Ndm 1996, ky thugt chong giO bdng neo cdp ehit ddo edc dudng Id md dd dupc nghidn ciru irng dyng thdnh cdng tgi Trung Quoc tip dd neo ket hpp neo cdp chat ddo dupc sir dyng rpng rdi cdc md than h i m Id Qud trinh dp dyng logi hinh ket eiu ch6ng giu ndy eho thiy nhilu uu dilm: ching gii> ehu ddng d i t dd, gid thdnh khdng dit, d l ldp ddt, tdng muc dp on djnh cdng trinh dudng Id hau nhu khdng phdi chong xdn sua chua Igi Neo cdp c6 kha ndng mang tdi eao chju tdi sau lip ddt, tgo dupc dp irng Ipc neo, cd t h i l i p ddt vdi ehilu ddi bat ky khdng gian chgt hpp Phgm vi dp dyng rdng, cdc dudng Id dpc via than ho$c cdc khu vpc ngd ba, ngd tu d Viet Nam, cdng ngh0 ehlng giCp bdng neo cdp v i n cdn khd mdi md, chua dupc dp dyng rpng rdi Mpt so md cung dd dua vdo dp dyng, nhung cdng tdc khdo sdt dilu kipn dja eo md chua 6u?(?c thpc hi^n mOt cdch d i y du vd bdi bdn cho nen cdng tde thilt k l chua dupc sdt vdi dieu kign thpc te hi0n tnj'dng Do dd, rat c i n phai khdo sdt ddnh gid dieu ki0n dja eo md mpt cdch ti mi vd khoa hpc, d l phye vy thilt k l chong giu- dupc higu qud nhit, d l ti> dd, gdp phdn thuc day ieng dyng rdng rdi kit c l u chong neo kit hpp neo cap chat ddo cho cdc md than him Id Vi0t Nam @o^ Khao sat danh gia dieu kien dja c o md o l t da bao quanh cdng trinh ngam vd ciing phuc tap, dd, bao hdm cdc logi mgt khdng lidn tyc, nhu khoi nirt vd ke nirt sp t6n tgi eCia nh&ng mdt khdng lien tye ndy ldm thay doi rd rgt d$c trung cudng dO vd biln dgng cua d i t dd, khiln cho cudng dp cua khoi dd vd miu dd chenh Ipch khd Idn Do dd, tat cd cdng vide lidn quan d i n d i t dd d i u ein phdi du^qtc hilu rd d i y du ddc trung eo hpc dja chit d i t dd xung quanh Can thiet phai tien hdnh cdng vigc kiem tra cudng dp, thdnh phin vdt chit vd c l u triic d i t dd Cdc hgng myc kilm tra ndy da dupc cde don vi thilt ke Trung Quic sir dyng Id m0t hd thing dac kiem tra nhanh dieu kipn d i t dd tgi hipn trudng Npi dung edng vigc tien hdnh kiem tra ehu y l u nhu bang 2.1 Kiem tra nguyen vj cuang dQ dit di a) Phtrang phap luang Sudyng phuong phap lo khoan sdu tiln hdnh kilm tra cudng dat dd xung quanh dudng Id Phuong phdp ndy da cd nh&ng uu dilm nhu sau: (1) Kit qua dgc khd g i n vdi thyc t l d i t dd; (2) cd kha ndng dgc dupc cudng dO d i t dd than mem y l u bd rdi md khdng t h i l i y dupc m i u ; (3) ed kha nang phdn tich vd dgc cudng dO d i t dd khdng ciing Idp, khdng cung dp sau lo khoan; (4) dyng ey thao tdc khd don gidn, cd t h i dgc d p toe; (5) cd the thir nghipm kieh thude Idn tgi hign trudng rit kinh t l so vdi nhung thiet bj khde KHCNM S6 1/2017 * C \ K r HAM L Thong tin khoa hoc cong nghe m o ^ Bang ) Borfackiim tra diiu ki^n dia ca tnd dit di xung quanh duang Id diin hinh N^i dung kiem (ra Phirong phap d$c Vl tri 16 khoan kinh £>d s a u Dudng l6 khoan lo khoan (mm} (m) Ghi chd Cudng dQ d i t dd K i l m tra nguyen vi thdm dd tiep xiic l6 khoan Noc vd hong 16 10 56 K i l m tra nguydn vj, khdng c i n l i y ldi phdn dnh chfln th^t c u d n g dp d i t 06 C l u tnJc d i t dd Soi tham Id khoan Noc to 10 28/56 N i m rd ty my tinh trgng phat t n l n khe ni/t Xae djnh cuiyng dO dat da l5 l dyng neo kit /7pp neo cip chong giir cdng trinh ngim md[J] Tgp chi Cdng nghiep mo [2] Trinh Dang Hung, Chen Chang Hua Scig Jia Lin (2012) >Ac(/Ve support works in underground mining construction execution and Trends of its application, Proceedings of the 4th International symposium on mine safety China Liaoning Technical University [3] 1104-2009, Cpng hda nhan dan Trung Hoa Quy pham ky thu$t chong glii' neo 16 than MT/T Method for investigating and evaluating the mine geomechanical conditions and the principles for designing works in supporting operations with using reinforcing anchors and cable anchors Dr Trinh Dang Hung Eng Nguyen Van Bac Institute ofMuiing Science and Technology — Vinacomin Eng Pham Quy Manh Ha Long coal company Sunimar>': Supporting technology « ith using reinforcing anchors and cable anchors is an active supporting one K 1th many dominant advantages, this has been considered as an ideal supporting technology, hul so far, is has noi been widely applied lo Vietnam underground coal mines One of the main causes is that, the investigation and evaluation worLs for serving the design in supporting operations are insufficient Therefore, it is necessary lo improve the investigation and evaluation txniks for serving the designing works in this field B'C KHCNM SO 2017 • ( \ K lUM U ) ... ke chong neo, dac biet la ddi vdi he thong chong giir neo va neo cap dy ifng lyc Idn, kha nang iam viee cua neo Id rat quan trpng anh hydng tdi thdnh cdng hay khdng eCia thilt k l chong neo Quy... vd m§t iJi thip O l ndng cao codng dp neo (tdng dydng kinh neo hodc ndng cao cydng v|t li^u thanii neo) , dd cirng (ndng eao dy irng lyc neo, tdng chilu ddi neo hogc gia c l todn than), bdo dim... dyng chong neo 2.3 Thu nghiem kha ning iim viec cua neo vi phin tich thinh phin vat chit dit di a) Thir nghiem kha nang iam viec cua neo tai hien tnrdng Thif nghiem kha nang lam viec cua neo tgi