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Ventilating method and equipment for air pressure maintaining for drilling in mine rescue

A technology of ventilation equipment and ventilation method, which is applied in the direction of drilling equipment and methods, mining equipment, drilling equipment, etc., which can solve the problems of disappearance and narrowing of the living space of trapped people, and achieve the effect of not shrinking the living space

Active Publication Date: 2015-09-30
NORTH CHINA INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a mine rescue drilling air pressure maintaining ventilation method to solve the problem that the living space of the trapped people is reduced or disappeared due to the mine pressure relief when the underground mine is drilled.
[0006] The purpose of the present invention is also to provide a mine rescue drilling air pressure maintaining ventilation equipment, which is used to solve the problem that the living space of the trapped people is reduced or disappeared due to the pressure relief of the mine when the underground mine is drilled.

Method used

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  • Ventilating method and equipment for air pressure maintaining for drilling in mine rescue
  • Ventilating method and equipment for air pressure maintaining for drilling in mine rescue
  • Ventilating method and equipment for air pressure maintaining for drilling in mine rescue

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Experimental program
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Effect test

Embodiment 1

[0047] This embodiment provides a method for maintaining air pressure in a mine rescue drilling hole, and the method includes:

[0048] Step 100: Determine the location of the ground drilling corresponding to the underground mine; so that rescuers can start drilling operations and perform rescue operations;

[0049] Step 200: Perform drilling operations at the drilling position, drill out the operation well, and pour orifice pipes on the circumferential wall of the operation well; grouting to make the circumferential well wall and the outer wall of the orifice pipe firm Combine; after the completion of grouting, sweep the hole for the orifice pipe and do a water pressure test, and the water injection pressure is not less than 3MPa; the leakage of the orifice pipe meets the designed water leakage before drilling can continue, otherwise the grouting is continued until Until the designed water leakage is met; preferably, the designed water leakage is less than 20L / min.

[0050] Step 30...

Embodiment 2

[0063] In order to better implement the mine rescue drilling air pressure maintaining ventilation method of the first embodiment of the present invention, the present invention also provides a mine rescue drilling air pressure maintaining ventilation device for realizing the present invention. The implementation of the mine rescue drilling air pressure-maintaining ventilation device of the present invention will be further described in detail.

[0064] See Figure 1-Figure 3 As shown, this embodiment provides an air pressure-maintaining ventilation device for mine rescue drilling. figure 1 It is a schematic structural diagram of the air pressure maintaining ventilation equipment for mine rescue drilling provided by an embodiment of the present invention, and the arrow shown in the figure is the air circulation direction; figure 2 for figure 1 The structure diagram of the expanded capsule shown in the contracted state, image 3 for figure 1 The structure diagram of the expanded st...

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Abstract

The invention relates to the technical filed of mine drilling, in particular to a ventilating method for air pressure maintaining for drilling in mine rescue and ventilating equipment for air pressure maintaining for drilling in mine rescue. The ventilating method comprises the steps that a surface drilling position corresponding to an underground mine is confirmed; drilling operation is conducted at the drilling position, an operating well is drilled out, and an orifice pipe is poured at the circumferential well wall of the operating well; drilling is conducted at the bottom of the operating well by adjusting diameter, and a drill stem is stretched into the mine; a circulating pipeline inside the drill stem is cut off; air circulating outside the drill stem is cut off; ventilating is conducted; air is supplied into the mine through the circulating pipeline through a draught fan, when the air pressure inside the mine exceeds a preset air pressure threshold value, an over-pressure component penetrating through a swelling capsule is opened, and the air is exhausted to the ground surface. The ventilating equipment for air pressure maintaining for drilling in mine rescue can realize the method. The ventilating method and equipment for air pressure maintaining for drilling in mine rescue solve the problem that living space of a trapped person shrinks or disappears due to the decompression of the mine when a drillhole gets through the underground mine.

Description

Technical field [0001] The invention relates to the technical field of mine drilling, in particular to a mine rescue drilling air pressure maintaining ventilation method and a mine rescue drilling air pressure maintaining ventilation equipment. Background technique [0002] my country’s coal mines are flooded frequently, causing hundreds of deaths every year. Some of these deaths are caused by air leakage from rescue drill holes and secondary flooding of refuge spaces. For example, in 2013, a mine in Shanxi was flooded due to water inrush from the old air, and 12 people were trapped in two pressurized "bubble" areas. After the disaster occurred, the government organized emergency rescue and disaster relief. One of the main methods of rescue was to drill quickly uphill to transport food and air to the 10 trapped people below the well. After the borehole was opened, the air leaked under the action of water pressure, the "bubble" space was flooded for the second time, and 10 people...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F11/00E21B7/00E21B17/00E21B33/12
Inventor 王经明梁为韩永郑贵强杨德芳张小趁陈自然
Owner NORTH CHINA INST OF SCI & TECH
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