In view of the actual situation that the pressure relief control of roadway pressure relief control, gas drainage control and other projects are difficult and the gas drainage control efficiency is low, our company has newly developed and produced mechanical hole expansion and hole making equipment for coal mines. The equipment adopts the hydraulic mechanical ejector rod control principle and is mainly used for hole expansion and hole making in rock formations. It can be used for soft rock reaming support, rock burst control and cutting top pressure relief, as well as a variety of hardness coal seam gas prevention hole bottom hole.
The equipment adopts the principle of hydraulic mechanical control outside the hole, so that the omni-directional hydraulic crawler drilling rig can provide the driving function of hydraulic ejector rod, and the corresponding control valve group is arranged. The control valve group is used to control the hydraulic oil circuit, cooling water and air. According to different construction needs, the mechanical core rod driving drill rod is matched with the mechanical core rod driving drill rod for long-distance output of thrust drive.
Hydraulic propulsion mechanical hole-making full hydraulic crawler drilling rig products are mainly used in the field of mining engineering. The main technical index is hydraulic mechanical hole-making at the bottom of the hole. The quality level is in the leading position in China. In the process of research and development and production, our company actively pays attention to the protection of intellectual property rights, and applies for patent protection according to the innovation points, involving patent application.
A mechanical floating wing slag discharge hole expansion hole making technology (patent number:ZL202010701768.7）、
A push rod jacking type reamer (patent number:ZL202010922779.8）、
A hydraulic propeller (Patent No:ZL202010890623.6）、
A mechanical top rod drill pipe (patent number:ZL202021510251.1),
and apply for a certificate of mine safety marking issued by the National Center for Mine Safety Marking (Certificate No:MED200476）。
The product integrates the design of drilling rigs and drilling tools, and increases the extraction concentration in the test process of major mining areas compared to carbon dioxide cracking technology.4.5%Compared with the high-pressure hydraulic punching hole technology, the current market price of the complete set of equipment for high-pressure hydraulic punching hole technology is about150-200Between 10,000 yuan, its mud pump occupies a huge cost space, hydraulic propulsion mechanical hole-making full hydraulic crawler drilling rig does not need to purchase mud pump to provide power, only this cost savings in.30%Therefore, our company's hydraulic propulsion machinery hole-making full hydraulic crawler drilling rig has an irreplaceable competitive advantage in terms of market application prospects and customer acceptance.
Through the analysis of the technical data obtained from the test, the soft coal seam hydraulic core rod gas permeability mechanical hole-making equipment to meet the hole-making construction at the same time, through low-pressure water or pressure air to discharge slag in the hole, to prevent high-pressure water from causing irregular damage to the hole wall, reduce the phenomenon of gas injection holes, reduce the gas free activity. In terms of economic value, the developed hydraulic core rod gas-enhancing mechanical hole-making equipment does not need to add additional high-pressure pumping stations, which can save part of the construction cost and has high hole-forming efficiency. Low-pressure slag discharge in the hole has the advantages of hole protection and hole collapse prevention, and the drilling regularity is good, thus maintaining long-term effective gas drainage and indirectly improving the gas drainage efficiency.
