Riix-qarinta Tunnel Forepoling Advance

Forepoling, oo sidoo kale loo yaqaan dallada tuubada, waa codsi loo isticmaalo in lagu xoojiyo saqafka tunnel-ka xaaladaha dhagaxa jaban.Habka qodista ayaa ka koobandaboolidtuubooyinka laga dalooliyo culayska xad-dhaafka ah ee dallad ahaan oo ay ka buuxaan grouting.Nidaamka Kabadhka ee KAT wuxuu u oggolaanayaa in si fudud loogu kaxeeyo tuubooyinka daasadaha dhulka oo leh baahi xoog yar.Qalabaynta casriga ah waxa kale oo daboolka fiberglass-ka loo isticmaali karaa wejiyada aadka u dheer.

Nidaamyada Casing-ka ee KAT oo inta badan lagu isticmaalo forepoling waa RoX+ 88,9/8, RoX 114,3/10 iyo RoX 139,7/10.

Tuubooyinka daasalka

Caadi ahaan hal tusin ayaa ka kooban dhowr daasadaha birta ah oo dhererkoodu yahay 1.5-3 mitir

Isku xirka dunta

Irbadaha la isku duro ee grouting

Dhexroorka daboolka caadiga ah: 88,9 - 114,3 - 139,7 - 168,3 mm

.Pilot Bits .Shirarka giraanta .Ulaha qodista .Casings bilowga .Cases-kordhinta .Gouting Plugs (koofiyadaha dhamaadka) .Adapters .Qulqulaya Valves .Nidaamyada Qodista Kahor-istaagga

Koodhka nidaamka	Casing				Garaac xoogaa				qaniinyada duuliyaha		Dulqaad
	[mm]	[gu]	[mm]	[gu]	[mm]	[gu]	[mm]	[gu]	[mm]	[gu]
RoX+ 76,1/4	76.1	3	4	0.157	52	2.047	90	3.543	66	2.598	R32
RoX+ 76,1/8	76.1	3	8	0.315	47	1.850	90	3.543	59	2.323	R32
RoX+ 88,9/4	88.9	3 ½	4	0.157	71	2.795	99	3.898	80	3.150	T38
RoX+ 88,9/8	88.9	3 ½	8	0.315	50.8	2.000	94.9	3.736	70	2.756	T38
RoX+ 101,6/10	101.6	4	10	0.394	65	2.559	110	4.331	79	3.110	T38
RoX+ 114,3/5	114.3	4 ½	5	0.197	91	3.583	128	5.039	102	4.016	T38
RoX 114,3/10	114.3	4 ½	10	0.394	73.5	2.894	120.30	4.736	92.5	3.642	T38
RoX 139,7/10	139.7	5 ½	10	0.394	94	3.701	145.70	5.736	117.5	4.626	T45
RoX+ 159,0/10	159.0	6 ¼	10	0.394	119	4.685	169.0	6.654	137	5.394	T45
RoX+ 168,3/10	168.3	6 ⅝	10	0.394	127	5.000	182.3	7.177	147	5.787	T45
RoX+ 219,1/12,7	219.1	8 ⅝	127	0.500	167	6.575	234	9.213	191	7.520	T45
RoX+ GFRP 76,1/8	76.1	3	8	0.315	47	1.850	90	3.543	59	2.323	R32
RoX+ GFRP 76,1/8	76.1	3	8	0.315	47	1.850	90	3.543	59	2.323	T35