Thong tin khoa hpc cong nghe mo PHU0NG PHAP DANH GIA DO BEN CHG MAI GIAN CHONG GC1800 16/24 The paper represents the results from researching, calculating and testing the stability of the roof of the[.]
Thong tin khoa hpc cong nghe m o PHU0NG PHAP DANH GIA DO BEN CHG MAI GIAN CHONG GC1800-16/24 The paper represents the results from researching, calculating and testing the stability of the roof of the shield support GC 1800 - 16/24 used in underground coal mining operations in Quang Ninh area, basing on the mine geological conditions and other factors such as engineering materials and mining technology These research results can be used for calculaUng ffie dimensions of the roof of the shield support They can be also used for calculating other kinds of roof having the same structures used in underground coal mining operations in Quang Ninh area I.D^tvdndl Thgc te dp dyng co gidi hda dao Id vd khai thdc tpi cac md than ham Id thdi gian qua cho thay, mpt ^ong nhung khd khdn Idn nhit, dd Id phai nhdp khiu thilt bj, nhu gidn ching, may khiu, mang cdo tCi* dd, khdng chu dpng dugc vdt tu, phy tung thay t h i , ddn den dch tac san xuit Trong Id chg co gidi hda khai thac him Id, gidn ching la mpt cdc thilt bj chinh, chiem t9 trpng Idn v l chi phi diu tu Vi$c chu dOng c h l tgo gidn ching nudc khdng nhung gdp phin Idm giam chl phi dau tu, ma cdn cd dieu ki^n d l tpo cdc logi gian ching phij hgp vdi dilu ki^n dp dung cua cdc md than ham Id nudc, chu dpng vide cung d p linh kien, phy tung thay thi Nhgn thuc dugc van d l , tO nhOng nam trudc, Tdp dodn Cdng nghipp Than - Khoang san Viet Nam (TKV) da chi dao thuc hipn chu truong npi dia hoa, tu che tgo cac thilt bj mo D l i vdi gidn ching tu hdnh, tip nam 2005 2006, thuc hien chi dao cua Tgp dodn TKV, Vien Khoa hpc Cong nghe Md - Vinacomin da hgp tdc vdi cdc doi tdc nudc ngodi, triln khai nghien cuu, thiet k l , che tao thiet bj Tu san pham gidn ching KDT, si> dung cdng nghe khai thdc chia Idp bdng d vfa die, din gidn ching Vinaaita, cd co c l u tran than ndc, si> dung cdng nghp khai thac cpt ddi theo phuong, khai thdc vfa day, d i e thoai (gdc d i e via d i n 30°), khdu Idp try, trin than ndc Giai doan dau, mdi chf dung d muc dp c h l tgo phin kit c l u CO khi, chilm ty trpng tren 50% gia trj cua gidn ching, din nay, thdng qua cac d l tdi, du an KS VO HQ'U HOANG KS VO DiNH MANH ThS NGUYEN DiNH T H O N G ThS D O A N N G O C C A N H W^n Khoa hoc Cong ngh$ M6 - Vinacomin Bi$n t$p: TS Ta Nggc Hai sdn xuit thu nghipm cdc d p , chCing ta dd nghien cuu, c h l tgo dugc nhi>ng linh kipn thuy luc, nhu van dilu khiln thuy luc chinh, xi lanh, piston dudng kinh d i n 200mm Tu nhung kit qua da dat dugc, nam 2013, Vien Khoa hpc Cdng nghe Md tilp tyc d l xuit vd dugc tuyln chpn thuc hipn de tdi: "Nghien cuu, thilt k l , c h l tgo gidn chong tu hdnh dp dyng dilu kipn via ddy trung binh, die thoai vd nghieng tgi cac md than him Id vung Quang Ninh" San phim cua d l tai dugc ddng ky, thuc hien c h l tao gian chong GC180016/24, vdi thing s l va dac tinh ky thugt tuong duong gian ching Z21800-16/24 dang dp dyng tai Id chg via 12/4, muc -200/-150, Cdng ty CP than Khe Chdm Trong kit d u gidn ching, maj gidn Id m$t nh&ng chi tilt quan trpng, dam bdo cdc ydu cau ching giu cOa gidn chong Bai bdo ndy trinh bdy phuong phdp tinh todn bang gidi tfch vd m l phdng s l vide kiem tra dp ben cOa mdi gidn chong GC1800-16/24 theo tieu chuin dng suit tugng duong Von - Mises Gidi thipu v l gian chdng GC1800-16/24 Nhu da ndu tren, gian ehing GC1800-16/24, san pham cua de tai, dugc c h l tgo 6k su dyng edng nghp khai thac dilu kipn via ddy trung binh, die thoai va nghieng tai cae md than him Id vung Quang Ninh, via day 1,8 + 2,2m, die din 30°, khiu than bang phugng phdp khoan n l min, ding bp vdi thiet bj van tai Id mdng cdo SGZ630/150 Tren hinh t h i hipn kit c l u cua gian ching, ddc tinh ky thugt cua gidn ching dugc t h i hipn bang KHCNM S6 11/2015* CO DIEN-TV'DONC HOA Chao mifng 79 nam Ngay truyen thong cong nhan vung mo r t Bdng Ddc tinh kp thudt cua gidn chdng GC-1800/16/24 Gii tri TT Thdng so ky thuit Ban vi ? 6 Chieu cao (min - max) Chieu rOnq (min- max) Chi^u ddi (min- max) So cOt ci^a qidn ch6nq Luc chonq ban diu Lvc chonq dinh mijc Goc doc 16 cho ctio ph6p Trong luvnq mm mm mm C6t KN KN tan 160asa2 + Q (3) ^_P,Q)5fl,Ii-7,.(Ii+Ij^Li)+JS.C«MIi+^)+f.^tg(iiH) (4j e Thay s l theo kich thudc gidn chong GC180016/24, gia trj nhusau: XB = 579,3 kN; YB = 65,4 kN; X = 0,674 m; Xdy dung bilu npi lgc va mdmen eho mdi 9'3n: Ve bilu d l lgc d t Qz vd md men uln MY vdi cdc ngogi luc tdc dung Gid trj md men u l n Idn nhit nhusau: Max[MY(z)] = Max[Max[MY(z)1;Max[MY(z)2; Max[MY(z)3] Bilu d l npi luc va mdmen tdc d0ng len gidn ehing dugc t h i hipn tren hinh Qua bilu d l npi luc ta thiy, tai vj tri cdch d i u xd X = 674mm cd md men vd luc cat tuong ung Hinh Mdt cdt tai vj trt md men Idn nhdt Idn nhit, vi vgy phai kilm tra bin tgi vj tri ndy Oilu kipn ben eua kit d u dugc tinh theo ung suit tuong duong nhu sau [2]: o-, »=v^r+3c