Thong tin khoa hpc cong nghe m o
J MOT SO GIAI PHAP KY THUAT CONG NGHE THU HOI GIAN CHONG LO CHO CO GlOfI HOA TT-6-1 TAI CONG TY THAN QUANG HANH - TKV
TS. Cao Quoc Viet Vien Khoa hgc Cdng nghe Md - Vinaeomin ThS. Nguyen Hai Trung, KS. Nguyin Dinli Tlianh
Cdng ty than Quang Hanh - TKV Bien Tap :TS. Truang Birc Du Tom tat:
Tong hap kit qud khai thac Id cha ca gi&i hda ddu tiin tai khu vuc Ngd Hai - Cdng ty than Quang Hanh vd mot so gidi phdp ky thuat duac dp dung trong qud trinh thu hoi dong bo thiet bi ca giin hda
1. Khai quat dieu \»en va ket qua ap dung 16 cho- CGH TT-6-1
Oe nang eao san lugng, nang suit, mirc dp an toan va cai thien dieu kien lam viee eho nguai lao dgng trong khai thae via than day trung binh, gdc d i e thoai d i n nghieng, Cdng ty than Quang Hanh da d i u t u then khai ap dung mgt day truyin eg gidi hda (CGH) tir thang 12/2015 tai 16 chg TT-6-1 mire -115/-90, via 6 khu Trung Tam, md than Nga Hai. Oac diem dieu kien dja ehat - ky thuat md khu vye Id ehg nhu sau: ehieu dai Id ehg theo hudng d i e 78m, theo phugng 290m; chilu day via trung binh 2,4 m, gde doe tir 14 + 35°; vach tryc t i l p la Idp bdt k i t phan b l deu, chilu day tir 2,7 19,1m trung binh 9,4m, euong do khang nen trung binh s^= 40,9 MPa, ddi cho ngay sat via than ton tai ldp vach gia dang set than td' 0,3 , 0,56m, thudc loai on djnh trung binh; vach ca ban chii yeu la bgt k i t hoac eat kit, ddi cho la san k i t vai chieu day tir 7,7 , 15,5m, trung binh 12,4m, eudng do khang nen trung binh s^ = 85,8 Mpa, thuge loai sap do trung binh den kho sap do; tru tryc tiep la Idp bdt k i t day tir 1,7 . 8,6m, trung binh 4,6m, cudng dp khang nen trung binh s„= 40,9 MPa, thugc loai ben vung trung binh; ngoai ra, trong qua trinh dao Id chuan bj khoanh viing va van hanh Id ehg da phat hien hai phay ed bien do nhd (<2,5m) va pham vi tru noi via vat mdng giap vdi thugng khdi diem Id chg. Chi t i l t xem hinh 1.
Qua trinh khai thae da gap nhieu khd khan do d i i u kien dja ehit kem thuan Igi, phai k h i u vugt phay, cat da tru noi, via vat mdng, nhung vdi quyit tam ciia lanh dao, can bd, cdng nhan Cdng ty than Quang Hanh, sy hd trg, p h i i hgp chat che eiia Vien khoa hgc Cdng nghe Md, Id ehg da vugt qua khd khan vdi cac chi tieu kinh
t l ky thuat rat dang khich le. San lugng Id chg ngay cao nhat dat gan 1.100 tan, thang cao nhit 18.596 tan (thang 9/2016), binh quan 13.600 tan/thang, nang s u i t lao dgng cao nhat dat 17,2 tin/cdng, binh quan 10,6 tan/cdng. Qua dd, da giam dugc gia thanh phan xuang so vol Id chg thuy lyc dan dang ap dung trong ciing d i i u kien tai dan vj. Oac biet, mirc do an toan va diiu kien lam viec ciia ngudi lao dgng trong Id chg dugc cai thien ro ret. Cac k i t qua dat dugc neu tren da chirng minh cho s y dung d i n trong chu truang nang cao san lugng, nang s u i t lao dgng b i n g viec day manh ap dung ca gidi hda cua Cdng ty than Quang Hanh.
Sau thdi gian 11 thang khai thac, Id chg da k i t thuc dien dau tien va se chuyen dien khai thac sang Id chg TT-6-2 (hinh 1). Cac thilt bj trong ddng bg ca gidi hda cd khdi lugng, kich thudc Idn, trong khi day lai la Id chg ca gidi hda dau tien tai Cdng ty than Quang Hanh, dat ra yeu d u tdi uu cac cdng doan trong cdng tae ehuyen dien de riit ngan thdi gian thyc hien n h i m sdm ra than tai 16 chg k l tiep.
2. Cong tac thu hoi chuyen dien 16 cho' CGH TT-6-1
Hinh 1. Sadd dirong Id vi tri Id cha ca gioi hda TT-6-1
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Thong tin khoa hpc cong nghe mo ^ ^ ^
Tren ea sd kinh nghiem thu hdi dong bg thilt bj ea gidi hda tai mgt s l md nhu Vang Danh, Nam Mau, Khe Cham, dac biet la k i t qua khao sat tai Id chg CGH 11-1.14 mire -190/-200 via 11 khu III - Cdng ty than Ha L i m , Cdng ty than Quang Hanh va Vien Khoa hgc Cdng nghe Md da nghien ciru, dieu chinh mgt s l van d l ky thuat trong cdng tac chuyen dien Id ehg TT-6-1.
Theo dd, cong tac chuyen dien Id chg ca gidi hda da dugc trien khai theo cac budc sau;
2.1. Khiu Id cha tao khong gian thu hdi thiSt bi
Odng bg thilt bj co gidi hda, dac biet la gian chong ed kich thudc Idn, de thyc hien thu hoi trudc tien d n phai khiu tao khdng gian thu.
Cach tao dien thu h i i dugc thye hien trong cac 16 ehg co gidi hda ciia Tap doan trudc day thudng sir dung ludi thep de trai k i t hgp lan go len ndc 16 chg trong qua trinh khau (chieu dai theo phuang k h i u quy djnh theo thilt k l , nhung khdng nhd hon chieu dai xa ndc va xa pha hoa cua gian chong) de ngan eho khdng eho d i t da tran vao Id chg gay m i t an toan trong qua trinh ha, xoay de thu hdi gian chong. Thyc t l cho thay, do gian chong ed lyc chong Idn, cac eay go bj gian chdng nen ep giira xa gian va t r i n than/da nen hay bi dap, gay lam anh hudng d i n do on djnh cua ndc 16 khi thu hoi gian chong.
Phan tfch kinh nghiem thu hoi thiet bi ca gidi h6a tai cac don vj thai gian qua, de nang cao hieu qua va mirc do an toan trong cdng tac nay, viee tao khdng gian thu riit da dugc d i i u chinh sang sir dung day cap ket hgp ludi thep theo each thuc sau: khi guang 16 chg each vi tri dirng khai thac khoang 11,4 m (19 ludng khiu, t i l n do
G 6 l l Ll cTe' noc odr<3 P4.1fi
\ U r f f U h e p XSi ll'6p. CBII-22
0,6 m/ludng), trong qua trinh khau thudng ky, t i l n hanh trai ludi thep B-40 va lan day cap f24 hoac f32 mm len ndc 16 chg. Day cap duge e l dinh vao ludi thep B-40 b i n g day thep f3 mm, khoang each giO'a eae sgt cap theo phuang la 600 mm. O i n g thdi, de tao khdng gian xoay va van chuyln gian chdng, khi guang 16 chg each vj trf dirng k h i u 2,4m (04 t i l n do), dirng cdng tac k h i u guong b i n g may k h i u , thyc hien k h i u guang b i n g khoan no min, chdng giO' b i n g xa thep CBII-22, mgt d i u gae len xa gian, d i u cdn lai dugc d d b i n g cot thep c h i n g sat guang (hinh 2). Cdng tac k h i u 16 ehg tao khong gian thu hdi thyc hien trong thdi gian 15 ngay, tir 28/9/2016 - 13/10/2016. Trong thdi gian nay.
Id ehg v i n eho ra than, san lugng trung binh khoang 200 tin/ngay-dem.
So vdi gd, day cap cd sire khang keo cao, nen dudi sire ep ciia gian ehing v i n giii' dugc do ben va tfnh nang lam viec, khi ket hgp vdi ludi thep tao thanh mang lien k i t m i m . giir on dinh ndc, dong thai ngan khdng cho d i t da tut Id vao khdng gian 16 chg trong qua trinh thu hdi gian chong. Ngoai ra, cap thep sii' dung de trai ndc Id chg la cap thu hdi tir cac he thing tdi true ciia md, khdng phai mua sam nen chi phi gan nhu b i n g khdng, cho phep t i l t kiem hang tram met khoi go cho moi lan tao dien thu hoi, giam dugc dang ke ehi phi van chuyln va miie do nang nhpe cho ngudi lao dgng.
2.2. Chain bi cho cong tac thu hdi thiit bi o i n g bg 03 thilt bi ehinh trong 16 ehg ea gidi hda la gian ehdng (11,5 tin/gian), may k h i u va mang eao 16 chg cd kfch thudc, trgng lugng Idn.
Oe riit ngin duge thoi gian chuyen dien, c i n
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Xa + :oirief C3I-2
a. Hien trang 16 cho kit thdc chuin bj dien thu hoi
sir dung luai thep kit hop doan go b. Hien trang 16 cha kit thuc chuin bi dien thu hdi sd dung luai thep kit hop cap thep Hinh 2. Hien trang 16 cho- khi kit thuc cong tac khiu chuan bj dien thu hdi
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Thong tin khoa hpc cong nghe m o
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a. Dung vi chong go ap ma vi chong thuy lac don - xa khap tai vj tri vira thu hdi
Hinh 3. Ho ehiiu thu hdi va chdng gid 16 cha thiet phai ca gidi hda tdi da cdng tac van chuyen eae thiet bj nay tir 16 ehg TT-6-1 den dien mdi TT-6-2 va cd cae giai phap de han e h l ach t i c phat sinh trong qua trinh thyc hien. Cac giai phap trong khau chuin bj cho cdng tae thu hdi thilt bj dugc nghien ciru, thye hien bao g i m :
- (1) L i p dat duang ray tam dgc theo tuyin guang Id chg TT-6-1 va thugng khdi diem Id chg dien khai thac k l t i l p (TT-6-2). He thong dudng ray tam gom 03 thanh ray n i m song song, khoang each gu'a eae thanh ray 0,7 m, sir dung ta vet go va s i t (hinh 6a). Tuyin duong ray tam nay cd nhiem vu djnh hudng, giam ma sat vdi nen, ching hien tugng thilt bj cam/ngap sau vao nen Id gay khd khan va m i t an toan cho cdng tac van chuyen.
- (2) L i p dat 02 tdi, trong dd tdi s l 1 tai Id dgc via van tai -115 lam nhiem vu keo, tdi s l 2 tai Id dgc via thdng gid -86 lam nhiem vu ham thilt bj trong qua trinh thao, chuyen thilt bi trong Id cho TT-6-1.
- (3) Ciing cd, gia cudng toan tuyin va l i p dat he t h i n g van tai b i n g d i u tau diesel k i t hgp monoray, tdi nang tren 16 dgc via thong gio -115.
Cac cdng tac ehuin bj neu tren hoan thanh
b. Thu hoi vi chong thuy luc dan - xa khap, xep cui lan khong gian thu hdi gian chdng sau khi thu hdi gian chdng tai Id cho TT-6-1 trong 12 ngay, tir 14/10/2016 - 26/10/2016.
2.3. Thu hdi thiet bi Id cha ca gi&i hoa Sau khi k i t thuc cdng tac chuan bj dien thu hoi, may k h i u va mang cao Id chg duge thu trudc. Trong dd, song song vgi qua trinh thao tren Id chg TT-6-1, mang cao va may khiu dugc van chuyen x u i n g l i p dat tai thugng khdi diem TT-6-2, tong thdi gian thye hien 06 ngay, tir 26 + 31/10/2016.
Cdng tae thu hdi gian chong dugc thyc hien tiep theo sau dd. Cac gian ehing dugc keo, xoay dge theo t u y i n guang 16 chg bang kich di chuyen gian chdng k i t hgp vdi tdi. Khdng gian thu hoi gian chong dugc chong giu" b i n g cdt thuy lyc dan - xa khdp (02 hang, 03 day xa khdp/01 hang cho moi khdng gian thu hoi gian chong).
Theo t i l n dp thu hdi, cac hang edt chong thuy lyc dan - xa khgp se duge ehing chuyen doi sang vi chong gd va x l p cui Ign luu, giti' khdng gian Id chg. K i t qua thyc te eho thay, giai phap lan cap va ludi thep trai ndc da phat huy tot vai trd, khdng gian Id chg sau khi thu gian on djnh, c h i l u cao duy tri tir 1,8 + 2,2 m, thuan tien cho cong tac x l p cui Ign gitr ndc de thu h l l toan bd cae gian c h i n g trong Id chg. Chi t i l t xem hinh 3.
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Thong tin khoa hpc cong nghe m o
a. Gian chong thu hoi di chuyen tren ray nen tam /, \/an chuyin gian chdng thu hdi td cho TT-6-1 din trong 16 cha TT-6-1 /o cho TT-6-2 bing diu tau diesel kit hop monoray
Hinh 4. Cong tac van chuyin gian chdng thu hdi Cae gian c h i n g thu hdi tir Id ehg sau khi van
chuyen den Id dgc via -115 pham vi chan chg TT-6-1 dugc duge may nang treo len monoray, sau dd dau tau van ehuyen d i n nga ba dau Id chg TT-6-2 (hinh 4b). Thdi gian van ehuyen toan bg cac gian chong ea gidi hda tif Id chg TT-6-1 xuong Id ehg TT-6-2 la 13 ngay (tir 01 + 13/11/2016), tuang irng toe do binh quan 04 gian/ngay. Ld chg TT-6-2 hoan thien cdng tac can ehinh trong ngay 14/11/2016 va chinh thirc ra than tir ngay 15/11/2016- Nhu vay, tong thdi gian chuyen dien Id ehg ea gidi hda thyc t l la 47 ngay.
3. K i t luan
Nhd s y chuan bj ky cang, k i t hgp vdi cae giai phap dieu chinh duge hai ben ciing nghien ciru xay dyng, cong tac thu hoi, chuyen dien 16 chg CGH da dien ra an toan, hieu qua, tong thdi gian thyc hien la 47 ngay, sdm ban 13 ngay (22%) so vdi k l hoach (60 ngay). Odng gdp then c h i t trong thanh cong nay la viee dieu ehinh giai phap khau tao dien thu h l l tir trai ludi k i t hgp
lan go doan ndc Id chg sang sir dung cap va ludi thep. Cac giai phap d l xuat cung nhu k i t qua dat dugc trong cdng tac thu hdi chuyen dien tai Cdng ty than Quang Hanh se la ca so dtr lieu, cung nhu tai lieu tham khao quan trgng eho ban than dan vj ndi rieng, cho cac dan vj khai thac h i m Id khac ciia TKV ndi chung trong qua trinh then khai cdng nghe ca gidi hda.
Tai lieu tham khao
1. Vien Khoa hoc Cong nghe M6 - Vinacmin, Dy an "Oau t u thiet bj ca gidi hda khai thac than tai md Nga Hai - Cdng ty than Quang Hanh TKV" -2014.
2. Vien Khoa hoc Cong nghe Mo - Vinacmin, Thiet ke ban ve thi edng "Dy an dau t u thiet bj ea gidi hda khai thac than tai md Nga Hai - Cdng ty than Quang Hanh - TKV" - 2015.
3. Vien Khoa hoc Cong nghe Mo - Vinacmin, Bao cao "Oanh gia k i t qua ap dung va nghien eiru hoan thien cdng nghe ca gidi hda khai thac tai Cdng ty than Quang Hanh" - 2016.
Some technological solutions for increasing the safety level and efficiency in recovering shield supports from mechanized longwall TT-6-1
at Quang Hanh coal company
Dr. Cao Quoc Viet Institute of Mining Science and Technology - Vinaeomin
MSc. Nguyen Hai Trung, Eng. Nguyen Dinh Thanh Quang Hanh coal company
Summary:
The paper refers to some mining results from the first mechanized longwall at Nga hiai mining region, Quang Hanh Coal Company and some technological solutions for recovering the fully mechanized mining equipment
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