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Hydraulic fracturing permeability increasing system for ultra-thick coal seam of gas outburst tunnel of an expressway

A gas outburst, expressway technology, applied in the direction of gas discharge, mining fluid, fluid transmission device, etc., can solve problems such as safety needs to be improved, and achieve the effect of eliminating potential safety hazards and avoiding injuries

Pending Publication Date: 2020-06-30
CHINA CONSTR FOURTH ENG DIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The safety of the existing coal seam uncovering coal outburst prevention construction method needs to be improved

Method used

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  • Hydraulic fracturing permeability increasing system for ultra-thick coal seam of gas outburst tunnel of an expressway
  • Hydraulic fracturing permeability increasing system for ultra-thick coal seam of gas outburst tunnel of an expressway
  • Hydraulic fracturing permeability increasing system for ultra-thick coal seam of gas outburst tunnel of an expressway

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] Such as figure 1 As shown, the ultra-thick coal seam hydraulic fracturing anti-permeability system of the expressway gas outburst tunnel disclosed by the present invention includes a left hole 101, a right hole 102, a fracturing pump set 1 and an electrical system. A cross channel 103 is provided between the left hole 101 and the right hole 102. When hydraulic fracturing operation is performed on the left hole 101, the fracturing pump unit 1 is placed in the right hole 102, and the outlet of the fracturing pump 11 is connected to a high-pressure soft Pipe 14, the high-pressure hose 14 passes through the cross channel 103 and leads to the construction area of ​​the left hole 101. Explosion-proof doors 104 can be installed at both ends of the cross passage 1...

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Abstract

The invention relates to a hydraulic fracturing permeability increasing system for an ultra-thick coal seam of a gas outburst tunnel of an expressway, and belongs to the technical field of coal seam coal uncovering outburst prevention construction. The hydraulic fracturing permeability increasing system comprises a left hole, a right hole, a fracturing pump set and a data monitoring system, wherein the fracturing pump set comprises a fracturing pump, a motor, a transmission device and a control valve set; the motor is connected with the fracturing pump through the transmission device; the datamonitoring system comprises a PLC control cabinet, a computer and a soft start cabinet; the soft start cabinet, the control valve set and the computer are all electrically connected with the PLC control cabinet; the soft start cabinet is electrically connected with the motor; a transverse channel is arranged between the left hole and the right hole; the fracturing pump set is arranged in one hole; an outlet of the fracturing pump is connected with a fracturing pipeline; and the fracturing pipeline penetrates through the transverse channel to be led to the other hole. The hydraulic fracturingpermeability increasing system can be operated remotely, pressure relief can be conducted on the ultra-thick coal seam through remote operation after fracturing is completed, then personnel are arranged to enter the tunnel for inspection, possible accidents are prevented from hurting operators, and the potential safety hazard that people enter the tunnel with pressure is eliminated thoroughly.

Description

technical field [0001] The invention relates to the technical field of coal seam uncovering coal outburst prevention construction, in particular to an ultra-thick coal seam hydraulic fracturing anti-permeability system for expressway gas outburst tunnels. Background technique [0002] With the rapid development of my country's expressway network, especially in the southwest of my country, there are many mountains and complex geology. The number of road tunnels has increased year by year, and more and more geological problems such as gas outbursts and coal seams have gradually emerged. Coal seam gas is a kind of clean energy, but it is a source of disaster for engineering construction. The safety of the existing coal seam uncovering coal outburst prevention construction method needs to be improved. Contents of the invention [0003] The present invention aims to provide an ultra-thick coal seam hydraulic fracturing anti-permeability system for expressway gas outburst tunn...

Claims

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Application Information

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IPC IPC(8): E21F7/00E21B43/26E21B33/13F04B17/03F04B49/06F04B53/10F16H41/30F16H57/04
CPCE21B33/13E21B43/26E21F7/00F04B17/03F04B49/065F04B53/10F16H41/30F16H57/0404F16H57/0413F16H57/0434F16H57/0471
Inventor 康卫于海平刘闯孙文书黄志良郝雪斌蒋蕤杨凯
Owner CHINA CONSTR FOURTH ENG DIV
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