Ring bit Torowongan Forepoling Casing sateuacanna

Forepoling, ogé katelah payung tabung, mangrupikeun aplikasi anu dianggo pikeun nguatkeun hateup torowongan dina kaayaan batu rusak.Sistim pangeboran diwangun kucasingtabung nu dibor ngaliwatan overburden salaku payung jeung ngeusi grouting.KAT Casing System ngamungkinkeun gampang nyetir tabung casing kana taneuh kalayan paménta torsi anu rendah.Dina forepoling modern ogé casings fiberglass bisa dipaké pikeun facebolts ultra-panjang.

KAT Casing Systems lolobana dipaké dina forepoling RoX + 88,9/8, RoX 114,3/10 jeung RoX 139,7/10.

Tabung casing

Ilaharna hiji tihang diwangun ku sababaraha casings baja 1,5 - 3 méter

Sambungan ku benang

valves suntik pikeun grouting

Diaméter casing baku: 88,9 - 114,3 - 139,7 - 168,3 mm

.Pilot Bits.Majelis Ring.Batang Bor .Starter Casings.Extension Casings.Grouting Plugs (tungtung caps).Adaptor .Klep Grouting.Forepoling Systems pangeboran

Kode sistem	Casing				Cingcin bit				Pilot bit		Benang
	[mm]	[di]	[mm]	[di]	[mm]	[di]	[mm]	[di]	[mm]	[di]
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