Đề xuất một số giải pháp công nghệ khai thác tối đa trữ lượng, tài nguyên than hầm lò

Thong tin khoa hpc cong nghe m o

^DE XUAT MOT SO GIAI PHAP CONG NGHE KHAI THAC TOI DA

tru' lUtfng, tai nguyen than haim Id

Results from the analysis of the undeground coal min￾ing projects in Quang Ninh area show that, total coal re￾sources are bearing losses from mining activities or due to

a great unmlned coal resoun:es. Therefore, the research

on the technological solutions for maximally mining under￾ground coal resources from coai ribs protecting the surface

construction buildings, as well as from the thin coal seams

is an essential work, contributing to the increase of the in￾vestment efficiency of the mining projects and saving non￾renewable coal resources

TS.LEeCfC NGUYEN

ThS, TRAN MINH TI^N

KS DLfONG Dire HAI

KS. NGUYEN eCfC TRUNG

Vl$n Khoa hpc Cdng ngh$ Md - Vinacomin

Bien tap: Dio Hong Quing

Hi#n nay, hau het c4o mo him io dang k^t

thiic khai thac tru' [iKjmg than phan nong va quy

hoach khai thac xuong sau hon. D l khai thdc

xu6ng sSu, hku het cSc mo phai xay dg-ng h§

thing khai thong moi, iam tang suat dau tu'.

Ngoai ra, khi khai thac xuong s^u, hiing loat cic

ylu to dja chit - ky thuat mo tro nen phCfc tap

hon, nhu' ap iyc mo Ion, sv gia tSng khi mo,

cung dO v?n tai tang..., din den tang gia thanh

khai thic.

Mat khac, kit qua phan tich chi tilt tris lu'ong

dia chit (TLBC), tru luong huy dong (TLHB) va

trO luong cong nghiep (TLCN) trong 13 du 4n

mo l*n tai cic c6ng ty khai thSc than ham 16

(gIm Mao Khe, Vang Danh, Nam H/llu, Uong Bi,

Hi Lam, Nui Beo, Ha Long, Thong Nhat, Duong

Huy, Quang Hanh, Khe Ch4m, Mong Duong) [1]

cho thIy:

- Ting TLDC duoc dua via xem xet huy

dong trong c4c dy an mo la 1.258.496 ngan tan.

- Ting TLHD v^o cac du an la 924.169 ngan

tin, chilm 73,4% ting TLBC xem xet. TLDC

chua duoc huy dpng la 334.327 ngan tin, chilm

26,6%, chu ylu nam trong tru bao ve cac cong

trinh, al l tuong b l mgt nhu nh4 cCra, khu dan

cu, m|t bang san c6ng nghi$p, moong lo thien,

song, suli (212,3 trieu tan, chiem 16,9%), va

mOt phIn nam trong cac khu vuc via mong

(<1,2m), sat phay pha va tru luong nlm phan

tan (122 trieu tan, chilm 9,7%).

- Ting TLCN cua cSc du in \i 649.867 ngan

tin, chi chilm 70,3% ting TLHB, tuong duong

51,6% ting TLDC Tru luong tin that do cong

ngh$ khai thac va d l l^i lam trg bao v# cac

duong 16 la 274.302 ngan tan, chilm 29,7%

TLDC huy dOng, tuong duong 21,8% TLDC

duoc dua vao xem xet trong cac du an. Chi tilt

xem bang 1 va hinh 1.

Nhu vay, vdi 13 du an n6i tren, tong tru'

luong ton thIt do khai thac hole kh6ng thi huy

dpng vao khai thac tuong dl i Ion, chilm 48,4%

ting TLBC trong khu vu'c cac du an mo him 16.

Do do, vi0c nghien cuu cac giai phap cong ngh0

nham huy dong toi da tru luong, tai nguySn than

trong cac trg bao ve cong trinh, doi tupng be

mat, trij luong via mong vao khai thac, va cac

giai phap ky thuat, cong nghe khai thac tri$t d l

tru luong than da huy dong trong cac du an mo

la rIt can thilt, gop phIn nang cao hi^u qua dIu

tu cac du an khai thac mo, tilt ki^m tai nguySn

than khong tai tao.

Ben canh do, theo tinh toan din hit nam

2013 [2], trong tong s6 6.933.125 ngan tin trO'

luong va tai nguySn b l than Bong Blc (bao gIm

Hlnht BiSu dd ty Id phin bS trd luong dia chit

trong cic dw in khai thic than him Id

KHCNM so 8/2015* CNKT HAM LO