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Research and Application of Drilling Repair Equipment for

Because the underground gas drainage hole is easy to be destroyed by caving rock in the process of mining,the problem of hole collapse and hole blockage often occurs. In order to realize the efficient reuse of the constructed pumping hole, with the help of the

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Drilling rig HEBEI GIMARPOL MACHINERY

ZYJ prop hydraulic drill machine equip with carbide or PDC drill bit and high efficiency spiral drill rod.It is designed to release the gas and water in coal face. The depth of hole can up to 100-300m.The prop can be adjusted in 360 o,making the drilling angle ±90°.

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Hydraulic Mini Core Sample Geotechnical Sampling

The fully hydraulic power head core drilling rig adopting the rope core drilling technology has become the leading model for solid deposit exploration in developed countries, and has become the leading trend of drilling technology and equipment development in China.The rig can be used as an alternative to imports and is suitable for geological, metallurgical, coal, oil, natural gas

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ZQSJ Series Pneumatic Drilling Machine,ZQSJ Series

ZQSJ series Pneumatic drilling Machine is portable drill with features of explosive-proof, large torque,high rotation speed, light weight, suitable dimension, high efficiency, stable structure and convenient maintenance. Main Advantage Used in drilling holes for exploring, discharging gas and water in coal lane and coal-rock lane.

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Hydraulic drill hole reaming technology with large

Hydraulic flushing is usually used for soft coal with the danger of a coal and gas outburst. Hydraulic flushing reduces the in-situ stress and improves the permeability of the coal seam by causing a small-scale coal and gas outburst with a water jet in the cross layer drill hole. During hydraulic fracturing, hydraulic reaming and slotting are

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Drilling and Production Equipment

CNPC has over 40 years of experience in designing and manufacturing drilling rigs since 1970s. We produce various types of drilling rigs including AC VFD, DC, diesel engine and gear, chain, hydraulic and belt drive, truck-mounted and trailer-mounted series, ranging from 1,000 meters to 12,000 meters in drilling

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Drilling machine for underground and for water on

ZYJ-400/130 150m Flameproofed portable coal seam gas Bracket Hydraulic Rotary Drilling Rig. drain holes, gas drainage hole Read More. 2019-05-30 09:54:53. ZQJC-360/7.1 FLP Portable Pneumatic drilling machine for water and gas prediction and drainage ZQJC is a newly developed pneumatic drilling machine, compared with the available

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Road Header Machine Manufacturer,Hydraulic Gear

About Us Eminently renowned for excelling at works, we are, Shijiazhuang Coal Mining Machinery Co., Ltd., a business entity that bests at designing, engineering and offering Water Well Drilling Rig, Road Header Machine, Hydraulic Gear Pump and Underground Coal Mining Equipment, to name a few.The day of our incorporation dates back to the year 1939. We have not spent time in this industry, we

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Concrete Core Drills: Handheld, Wet, Dry, Hydraulic,

Drilling smaller holes in reinforced concrete, tile, masonry, or natural stone? A heavy-duty, portable or hand held core drill is the way to go. Have a larger scale job? Consider a gas-powered or hydraulic core drilling machine that can be hitch-mounted, skid steer-mounted, or even trailer-mounted.

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Mobile Bolters Home Komatsu Mining Corp.

2016-10-18  cable bolting, or for gas drainage drilling. 2300 Specifications RamTrak 2300 allows a complete range of roof, rib and floor bolting. Typical operating range Length (typical) Width (typical) Height (typical) Machine weight Ground pressure at max. rated load Hydraulic motor Hydraulic traction Rotary actuator mBoowings Dual controls Canopy 1850

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Research and Application of Drilling Repair Equipment for

Because the underground gas drainage hole is easy to be destroyed by caving rock in the process of mining,the problem of hole collapse and hole blockage often occurs. In order to realize the efficient reuse of the constructed pumping hole, with the help of the

get price

Drilling rig HEBEI GIMARPOL MACHINERY

ZYJ prop hydraulic drill machine equip with carbide or PDC drill bit and high efficiency spiral drill rod.It is designed to release the gas and water in coal face. The depth of hole can up to 100-300m.The prop can be adjusted in 360 o,making the drilling angle ±90°.

get price

Drilling machine for underground and for water on

ZYJ-400/130 150m Flameproofed portable coal seam gas Bracket Hydraulic Rotary Drilling Rig. drain holes, gas drainage hole Read More. 2019-05-30 09:54:53. ZQJC-360/7.1 FLP Portable Pneumatic drilling machine for water and gas prediction and drainage ZQJC is a newly developed pneumatic drilling machine, compared with the available

get price

Pneumatic Drilling Machine Manufacturer,Pneumatic

We are regarded as the leading name offering Pneumatic Drilling Machine that is used for water and gas prediction and drainage. This drilling machine is a newly developed pneumatic drilling machine, compared with the available drilling machine, both the drilling depth and drilling efficiency is

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gas drainage drill rod thebushlodge.co.za

Inseam gas drainage across the panel and along the panel: Figure 2 below shows typical drilling patterns used in the inseam drainage of a panel. The extent of the drill hole density, drill pattern and drill fan orientation with respect to the panel direction is dependent upon the coal permeability, coal gas make, gas composition, ground

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GDY2000 Hydraulic-core Drilling Machine _江苏谷登工程

2015-12-9  It is the ideal drilling machine suitable for geological, metallurgical, coal, nuclear, hydro and other industries dominated by diamond drilling and carbide, which is also suitable for shallow oil and gas exploration, mining tunnel ventilation, drainage.

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Portable Water Well Drilling Rigs YG Machinery Co.,Ltd

2020-7-6  Portable water well drilling rigs used for geothermal drilling, farm irrigation, house yard, gardens and water well drilling, drilling diameter is 70m to 350mm, and drilling depth is 80m to 100m.It also can be used in small building piling, like farmhouse or factory, the drilling diameter can reach 600mm and depth can be more than 120 meters.

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Mobile Bolters Home Komatsu Mining Corp.

2016-10-18  cable bolting, or for gas drainage drilling. 2300 Specifications RamTrak 2300 allows a complete range of roof, rib and floor bolting. Typical operating range Length (typical) Width (typical) Height (typical) Machine weight Ground pressure at max. rated load Hydraulic motor Hydraulic traction Rotary actuator mBoowings Dual controls Canopy 1850

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REVIEW OF INSEAM DRILLING PRACTICE

2010-10-5  In-seam gas drainage in Australian coal mining is dominated by simple directional techniques using a downhole motor and electronic survey tool. This was not always the case; gas drainage was commonly carried out by rotary drilling methods with mixed success during the 1980’s to early 1990’s (see Gray, 1995 in Lama (ed.), 1995).

get price

Concrete Core Drills: Handheld, Wet, Dry, Hydraulic,

Drilling smaller holes in reinforced concrete, tile, masonry, or natural stone? A heavy-duty, portable or hand held core drill is the way to go. Have a larger scale job? Consider a gas-powered or hydraulic core drilling machine that can be hitch-mounted, skid steer-mounted, or even trailer-mounted.

get price

Mobile Bolters Home Komatsu Mining Corp.

2016-10-18  cable bolting, or for gas drainage drilling. 2300 Specifications RamTrak 2300 allows a complete range of roof, rib and floor bolting. Typical operating range Length (typical) Width (typical) Height (typical) Machine weight Ground pressure at max. rated load Hydraulic motor Hydraulic traction Rotary actuator mBoowings Dual controls Canopy 1850

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Jikai Equipment Manufacturing Co., Ltd.

ZDY Series Hydraulic Coal Mine Tunnel Drilling Machine: ZDY series drill rig is wildly used in different angles drilling for water exploring, water injecting, gas drainage, geological exploring, etc; specially

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Full Hydraulic Underground Drill Rig,Underground

2019-12-15  HYKD-4 full hydraulic underground drilling rig is applied fields like coal, metallurgy, geology and engineering, etc. This underground drilling machine can also be used in large-diameter gas drainage and water injection hole of mine, tunnel and coal mine. It is also suitable for large-diameter horizontal drilling surface engineering.

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BEIJING CORTECH DRILLING EQUIPMENT COMPANY

Customized Gas Drainage Tunnel Drilling Rig With 140kN Pull Head ZDY4000 FOB Price: Negotiable Min. Order: 1 Pieces; Multi-purpose Coal Mine Tunnel Drilling Rig Machine 350m Depth ZDY4000 FOB Price: Negotiable Min. Order: 1 Pieces; Hydraulic Coal Bed Methane Drilling Rig / Coalbed Gas Drilling Rig CMD100 FOB Price: Negotiable Min. Order: 1 Sets

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Characteristics Of Hydraulic DTH Drilling Rig In

2020-6-16  Different drilling rigs can be selected according to the height and use of coal roadway. 2. Hydraulic drilling machine can put mesh pipe into the hole while drilling, which solves the key problem of gas drainage in high gas mine with unshaped perforation and soft coal seam. So this drill is also called pipe drill or pipe jacking drill. 3.

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Development and performance testing of the new

1. Introduction. China's coal mining is dominated by underground mining, and the conditions of coal seams are complex and changeable. Coal disasters are frequent [1,2], among which gas accidents are particularly serious [3,4].Reasonable utilization of mine gas and improvement of coal mine working are of great significance for improving energy structure, reducing mine gas accidents and

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ZDY-L Series Coal Mine Crawler Type Full Hydraulic Tunnel

2020-2-24  The drilling machine has a wide range of rotating speed, large torque, and strong pulling power. The drill device is suitable for the hole-drilling works that 360°horizontal and ±90°vertical. It can meet various needs of drilling, such as the holes of the geological exploration, gas drainage, water exploring, water drainage, water injection and other engineering holes.

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Portable Water Well Drilling Rigs YG Machinery Co.,Ltd

2020-7-6  Portable water well drilling rigs used for geothermal drilling, farm irrigation, house yard, gardens and water well drilling, drilling diameter is 70m to 350mm, and drilling depth is 80m to 100m.It also can be used in small building piling, like farmhouse or factory, the drilling diameter can reach 600mm and depth can be more than 120 meters.

get price

Concrete Core Drills: Handheld, Wet, Dry, Hydraulic,

Drilling smaller holes in reinforced concrete, tile, masonry, or natural stone? A heavy-duty, portable or hand held core drill is the way to go. Have a larger scale job? Consider a gas-powered or hydraulic core drilling machine that can be hitch-mounted, skid steer-mounted, or even trailer-mounted.

get price

REVIEW OF INSEAM DRILLING PRACTICE

2010-10-5  In-seam gas drainage in Australian coal mining is dominated by simple directional techniques using a downhole motor and electronic survey tool. This was not always the case; gas drainage was commonly carried out by rotary drilling methods with mixed success during the 1980’s to early 1990’s (see Gray, 1995 in Lama (ed.), 1995).

get price