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14
2020-10
Hydraulic punching refers to the method of using the water jet jetted by the drilling rig to flush out coal and methane in the outburst coal seam or induce controllable small outburst, so as to cause the coal body to relieve pressure, discharge methane and eliminate the danger of mining outburst. For coal seams with self-spraying ability, it is safe and reliable when it is used for coal uncovering at the stone gate, and it is suitable for soft self-spraying coal seams with serious outburst danger. The use of special hydraulic cutting or fracturing equipment, to achieve the internal water supply to the borehole in different directions of cutting or overall fracturing, so as to achieve the purpose of the coal hole fracture communication, improve the permeability of coal seam. Application Case: Coal Seam 1208 Mining Face of Shanxi Coal Industry Company
2020-10-14
14
2020-10
Special-shaped multi-edge grooved drill pipe-beneficial mining drilling technology
1. Product Performance Overview Special-shaped multi-edge grooved thrust slag discharge drill pipe, referred to as heavy-duty three-edge grooved drill pipe, is our company's latest research and development of coal mine tunnel drilling this coal seam gas drainage drill pipe, the coal seam hardness coefficient of the adaptability of a wide range of new drilling products. It is widely used in deep hole drilling construction of high gas coal seam, especially soft coal seam. Under the reasonable design condition of bit diameter difference, the spiral groove thrust slag discharge structure is added on the basis of the triangular greasy smear mixing and protecting hole. Selection of high-quality joints and rod body material by friction welding, machining center CNC machine tool finishing, with high torque, adapt to the performance characteristics of high speed drilling. Heavy Triangular
2020-10-14
14
2020-10
At present, in the drilling of coal mine gas drainage construction, due to the geological conditions and technological requirements of the coal mine, water or air injection is injected during the drilling process to achieve the purpose of cooling the drill bit, so as to prevent the high temperature caused by high-speed rotation friction from causing the composite sheet to wear and fall off. During the implementation of water injection drilling, due to the change of water volume and the different softness of formation rocks, holes are often blocked due to the development and expansion of rocks exposed to water. Moreover, when water injection drilling is carried out at negative angle and vertical drilling, drill sticking is often caused by poor anti-slag effect. When drilling is stopped midway, drill pipes are locked due to rock cuttings solidifying in water. Therefore, water injection drilling is not suitable for compound in many cases.
2020-10-14
14
2020-10
ZDY4000LP(A) type coal mine underground crawler full hydraulic drilling rig belongs to the crawler self-propelled, high torque type drilling rig. It can be drilled regular by ordinary outer flat drill pipe, and can also be drilled by spiral drill pipe. It can be constructed across belt conveyor. It is mainly used for the construction of deep gas drainage boreholes in this coal seam and adjacent layers in coal mines. It has the characteristics of convenient relocation and large adjustment range of opening azimuth and pitch angle. Drill Features 1. The main engine, pump station and console are arranged on the self-propelled crawler body, which is convenient to move. 2. The chuck and the holder are matched to realize the mechanization of the screwing and unloading of the drilling tool and reduce
2020-10-14
14
2020-10
14
2020-10
Pneumatic crawler drilling rig-Yikuang Technology
ZQLC pneumatic crawler drilling rig is a kind of light deep hole drilling rig powered by compressed air and equipped with crawler walking structure. It is suitable for the construction of water exploration, gas exploration, drainage hole and pressure relief hole in coal seam in coal mine. It is mainly composed of crawler assembly, chassis assembly, drive assembly, fuel tank assembly, control assembly, column assembly, host assembly, hose assembly and other parts. It has 360. Horizontal angle drilling/flexible operation, strong mobility, good safety performance and other advantages, to the greatest extent, reduce the labor intensity of workers.
2020-10-14
14
2020-10
Mine drilling with drilling trajectory measurement system-beneficial mining technology.
Product Name: Mining while drilling measurement device Product model: YSZ12 Product Trade Name: Mine Drilling Trajectory Measurement System Mine drilling trajectory measurement system in strict accordance with national, industry and enterprise standards for production inspection, conformity. Relevant technical standards (GB3836.1-2010, GB3836.2-2000, MT/T677-1997, MT/T 521-2006, MT/T 392-2001, SY/T 5416.2-2007, Q/ODS001-2018, Q/ODS002-
2020-10-14
08
2020-10
Helping the Poor and Helping the Poor, Sending Warmth, Beneficing Mine Science and Technology, Giving Love
2020-10-08
08
2020-10
Welcome National Day Celebrate Mid-Autumn Festival Dinner
Welcome National Day Celebrate Mid-Autumn Festival Dinner
2020-10-08
08
2020-10
Mid-Autumn Festival meets National Day, referred to as "China"-YiKuang Technology
Mid-Autumn Festival meets National Day, referred to as "China"-YiKuang Technology
2020-10-08
