Henderson molybdenum mine heavy truck uphill

The Henderson Molybdenum Mine is a large-scale mine that was completed and put into operation in the United States in the 1970s. It is a mining and mining enterprise with a daily output of 27,000 tons of ore.

The deposit has a length of 900m, a thickness of 120-240m, and an average grade of MoS ₂ of 0.49%.

Mining terrain, due to large-scale beneficiation plant, there is not enough industrial sites near the mine, processing plant had built in place across the Atlantic from the Pacific watershed of mine 22.5km. The elevation of the plant is 2,743m, and the elevation of the main flat shaft is 2,286m, so it can only be transported uphill by Changping.

The main flat ore transport layer considers two options: one is rail transport; the other is belt conveyor transport. Compared with the scheme, the latter has a transportation cost higher than the former by US$0.02/ton; and an underground crushing and dust removal device is required; the flat section has a large section, and in addition to the steel rope conveyor, the auxiliary vehicle is also required. It was therefore decided to use rail transport. A double track with a gauge of 1040 mm is laid in the flat. It is 5m wide, 4.6m high and 15.8km long (Fig. 1).

Figure 1 Henderson molybdenum mine flat development system diagram

1-outlet well; 2-second well; 3-intake well; 4-wind well;

5-ç¡å£; 6-concentration plant; 7-train group

A total of three shafts were drilled in the mine. Well No. 1 was an outflow well, and No. 3 was an inlet well with an internal diameter of 7 m. Both wells were drilled to a level of 2469m, with a depth of 744m and 698m respectively. Well 2 is used to upgrade personnel, equipment and materials. The net diameter of the wellbore is 8.5m and the depth of the well is 946m. Connected with the 2286m main level. There are 114-person double-layer cages in the wellbore and a large cage with a load of 20t and a bottom area of â€‹â€‹7.3Ã—2.7m for lifting large-scale equipment such as dump trucks and scrapers. Both cages are equipped with counterweights. There is also a small cage for wellbore maintenance. Each stage is connected by a ramp. [next]

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The main level boring is divided into two working faces to perform relative operations. The west section is 11km long and is driven downhill from the surface to the east with trackless equipment. The eastern section is 4.8km long and is used to dig up the west uphill with rail equipment.

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Due to the high ground temperature (37Â°~42Â°C), in order to improve the ventilation conditions, a No. 4 well with a diameter of 4.3m and a depth of 483m was drilled in the middle of the main flat, and two 370kw fan fans were installed at the wellhead.

See Table 1 for examples of Pingyi development.

Table 1

Mine name	Deposit element				Production capacity of 10,000 tons / year	Mainly develop roadway location	Main level			Slip			Auxiliary vertical (oblique) well			Note
Mine name	Going long (m)	Extension (m)	inclination (Â°)	Thickness (m)	Production capacity of 10,000 tons / year	Mainly develop roadway location	Number of pieces	Section	Length (m)	Number of pieces	Section	Length (m)	Number of pieces	Section (m ² )	Length (m)	Note
Qijiang Whitehead Lake iron ore	400~ 900	1100	33~ 36	0.7~ 2.97	10.5	Lower plate	1	Width Ã— height 2.6 Ã— 2.75m	1039. 4				Inclined well 3	4.93 5.34	420 453 400	1 upper inclined well and 2 middle inclined wells
Minjiang Daloba Iron Mine	1000	600	18~ twenty two	2.0	25.5	Intrapulse	1	Double Lane: 3.78	208				1 inclined well	5.64	621
Tianhu Iron Mine Zhaojiazhong Mining Area	200~ 1000	202	40	1.69	10	Lower plate							1 inclined well	8.57	400
Pangjiabao Iron Mine	8600	Vertical depth 350	25~ 35	I layer mine 1.87;	250	Lower plate				The first section of the second section of the third section of the third section of the slippery well	22~ 2.5m 2Ã—2m	270 270 270 Three sections Two paragraphs	One blind oblique well two blind oblique well three blind oblique well four blind oblique well five blind oblique well		446 422 416 533	Three-stage slide
				II layer mine 1.35		On the plate	1	13.0 m ²	1860
				III layer mine 0.8		Lower plate	1	12.68 m ²	5100
Xiangdong Qingshui Iron Mine	3400	800	25~ 75	1.51	20	flank	1	7.09 m ²	4256	1	1.8Ã—2m	62	1	5.06	150	The main flat and the water mine share
Longquan lead zinc ore	350		0~ 42	4.0~ 43. 9 average 16.54	13.2	Lower plate	1	5.58m ² 9.89m ²	394. 32	1	2.52.5 m	140				Ground roads are connected to the middle section of the mouth
Shizhuyuan metal ore	600~ 980	About 300	10~ 15	100~ 200 thickest 300	99	Lower plate	1	12.03 m ² 14.73 m ²	2081. twenty four	4	33m	Two 110 Two 178	a ramp	11. twenty two	1176	.
Wuchuan mercury mines	2700 ~ 4300	400	10~ 25 45~ 80	0.31 ~ 12.35	6.6	Lower plate	1	5.6m ²	1010	3	2.52.5 m	170 55 130				Is expanding to 132,000 tons / year
Tin Tieshan Lead-Zinc Mine	850~ 1365	628	60~ 80	4~16	100	Lower plate	1	13.88 m ²	1050	2	7.07 m ²	160Ã—2				Surface roads pass through all stages
Shaanxi Silver Hole silver galena	550	727	30~ 45	4	10	Lower plate	1	5.6m ²	418	1	7.06 m ²	120				Ibid.
Shaanxi Yinmu Temple Lead-Zinc Mine	250~ 90	350	73~ 85	3	6.6	Lower plate	1	Net.11 m ² Digging 6.11m ²	391.9				1	12. 57	222. 7
Kaiyang phosphorus ore	4600	1100	30~ 45	6~7	100	Lower plate	1	11.8 m ²	510	4	7.07 m ²	40 80 160 200	Inclined well 4	4.3	208Ã—4
Hubei Wangji Phosphate Mine	4200		25~ 38	8	150		1st district in the south Central District 1	8.6m ² 8.6~ 9.0m ²	1200 1500	3 3	4.91 m ² 4.91 m ²	90 60 30 90 90 30
Sichuan Jinhe Phosphate Mine	2300	500	8~ 23	6~10	50		1	8.55 m ²	395	2	3.14 m ² 4m ²	35 69				Surface ramp
Inner Mongolia charcoal kiln pyrite	1770	500	56	6.64	50		1	8.2~ 12.5 m ²	1460	3	4.8 m ²	100
741-1	2100	300	60~ 70	1~2	8	Lower plate	1	4.77 m ²	650				1	44m	209
743-1	500	250	65~ 80	1~ 1.5	3	Along the way down	1	6.05 m ²	370				1	5.59	150
Pine tree tin mine	245~ 910	220~ 450	10~ 15	2~ 10	49.5	Lower plate	1	5.07~ 10.78 m ²	2397	4	2.32.3 m	175~ 200	2	4.14.1 ~ 4.6m	191~ 219m
Dongchuan Mining Bureau	1000 ~ 1500	1500 ~ 1944	15~ 18	2.4~ 4.1	26.4	Lower plate	1	2.65~ 2.6m ²	1440	6	2.32.3 m	20~ 150	1	2.5Ã—3.5m	197
Easy Gate Lion Copper Mine	30~ 325	20~ 600	64~ 82	1~ 30.9	59.4	Lower plate	1	5.86~ 6.04 m ²	1443 (single length)	1	2.52.5 ~3.5 m	293	1	4.24.2 m	260
Yimen Shishan Mine	680~ 900	600	60~ 25	18~ 22	69.3	Lower plate	1	5.31~ 11.81 m ²	2089	2	2.02.0 m	100~ 150	1	5.55.5 m	250

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