A high-efficiency gas-phase blasting dredging device for coal hole blockage and its preparation method

Abstract

The invention relates to a high-efficiency gas-phase blasting device for coal hole blockage, which includes a positioning keel, an auger bit, a gas-phase pressure device, a positioning frame, a feed drive mechanism and a control circuit, and three driving guide rails are evenly distributed on the inner surface of the positioning frame. The feed drive mechanism is slidingly connected to the inner surface of the positioning frame through the drive guide rail, the lower end surface of the feed drive mechanism is connected to the upper end surface of the positioning keel through the transmission mechanism, the lower end surface of the positioning keel is connected to the auger bit, and the gas phase pressure device is embedded in the positioning keel and connected to the positioning keel. The positioning keels are coaxially distributed, and the control circuit is connected to the outer surface of the positioning frame. The dredging method includes three steps of equipment assembly, blasting prefabrication and blasting operation. On the one hand, the invention has high mechanization efficiency of construction work, thereby greatly improving the work efficiency of dredging work, and effectively reducing the labor intensity and cost of construction work; on the other hand, it effectively overcomes the occurrence of serious hazards to construction safety.

Description

technical field [0001] The invention relates to a high-efficiency gas-phase blasting dredging device and a preparation method for coal hole blockage, belonging to the technical field of gas-phase fracturing. Background technique [0002] Coal eyes play a key role in the coal transportation process, and are responsible for the dual tasks of slipping coal and temporarily storing coal. There are many reasons for coal mine blockage, mainly hydrogeology, parameter selection, construction quality and daily management. Once blockage occurs, the transportation system will be temporarily interrupted, and even a mining area or even the entire mine will be forced to stop production. Commonly used methods to deal with blockage are: 1. Manual dredging method. Manual dredging can only be used for non-serious blockages. If the blockage is serious, manual dredging will not work, and the safety of construction personnel is poor, and the labor intensity of workers is high; 2. Explosive dredgi...

AI Technical Summary

Problems solved by technology

Commonly used methods to deal with blockage are: 1. Manual dredging method. Manual dredging can only be used for non-serious blockages. If the blockage is serious, manual dredging will not work, and the safety of construction personnel is poor, and the labor intensity of workers is high; 2. Explosive dredging method, Explosives are strictly controlled and the operation cycle is long; and the explosion generates sparks, which may easily cause other explosion accidents; 3. The air cannon dredging method is complicated to operate and has poor flexibility; 4. Hydraulic pressure, serious waste of water resources, and at the same time cause a bad construction environment on site, affecting subsequent construction The operation is carried out smoothly

[0003] In response to this problem, although a method of using high-pressure gas blasting to dredge gas phase fracturing has also been developed, during construction, it is often necessary to set up positioning drilling first, and then arrange fracturing equipment, so the construction is difficult and the construction efficiency is low. , in addition, after the completion of the blasting operation, the recovery operation efficiency of the fracturing equipment is low, and when the drilling operation, fracturing equipment layout and recovery operations are performed, manual operations by homogeneous staff are required, which greatly reduces the work efficiency and Increased labor intensity and cost of work

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