Ring bit Tunnel Forepoling Casing Advance

ʻO Forepoling, ka mea i kapa ʻia ʻo tube umbrella, kahi noi i hoʻohana ʻia e hoʻoikaika i ka hale tunnel i nā kūlana pōhaku haʻihaʻi.ʻO ka ʻōnaehana wilipahu pahuʻO nā paipu i wili ʻia ma o ke kaumaha ma ke ʻano he umbrella a hoʻopiha ʻia me ka grouting.Hiki i ka KAT Casing System ke hoʻokuʻu maʻalahi i nā paipu pahu i loko o ka lepo me ka koi torque haʻahaʻa.I kēia manawa forepoling hiki ke hoʻohana ʻia nā pahu fiberglass no nā facebolts lōʻihi loa.

ʻO KAT Casing Systems i hoʻohana nui ʻia i ka forepoling ʻo RoX+ 88,9/8, RoX 114,3/10 a me RoX 139,7/10.

Paipu pahu

ʻO ka maʻamau hoʻokahi puʻu he mau pahu kila o 1,5 - 3 mika

Hoʻohui ʻia ma ka pae

Injection valves no ka grouting

Nā anawaena pahu maʻamau: 88,9 - 114,3 - 139,7 - 168,3 mm

.Pilot Bits .Hui apo .Nā Koʻokoʻo Drill .Hoʻomaka Hoʻopaʻa .Hoʻopaʻa ʻia .Nā Pākuʻi Kūlohelohe (nā pāpale hope) .Mea hoʻopili .ʻO nā pāpaʻi kiʻi .Forepoling Drilling Systems

Code pūnaewele	Kakau				Ring bit				Pilot bit		Loko
	[mm]	[ma]	[mm]	[ma]	[mm]	[ma]	[mm]	[ma]	[mm]	[ma]
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