CN111197493A - Construction process of underground temporary return air channel - Google Patents

Construction process of underground temporary return air channel Download PDF

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Publication number
CN111197493A
CN111197493A CN201811363650.7A CN201811363650A CN111197493A CN 111197493 A CN111197493 A CN 111197493A CN 201811363650 A CN201811363650 A CN 201811363650A CN 111197493 A CN111197493 A CN 111197493A
Authority
CN
China
Prior art keywords
construction
underground
ventilation
roadway
drilling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811363650.7A
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Chinese (zh)
Inventor
于斌
许宏
梁文义
罗新旗
刘锋
王海波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Datong Coal Mine Group Co Ltd
Original Assignee
Datong Coal Mine Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Datong Coal Mine Group Co Ltd filed Critical Datong Coal Mine Group Co Ltd
Priority to CN201811363650.7A priority Critical patent/CN111197493A/en
Publication of CN111197493A publication Critical patent/CN111197493A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F1/00Ventilation of mines or tunnels; Distribution of ventilating currents
    • E21F1/006Ventilation at the working face of galleries or tunnels
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/28Enlarging drilled holes, e.g. by counterboring

Abstract

The invention belongs to the technical field of underground ventilation of coal mines, in particular to a construction process of an underground temporary return air channel, which solves the problems of high construction difficulty, high cost and long construction period of the traditional construction process of drilling, blasting and deslagging for constructing the temporary return air channel, and comprises the following steps: determining a return air main roadway closest to the underground ventilation blind area according to the relationship between the underground roadway arrangement and the peripheral roadway; after accurate measurement and positioning, arranging a ventilation chamber; setting up a raise boring machine in the higher ventilation chamber and drilling a guide hole from top to bottom; reaming the guide hole from bottom to top after drilling through; and after the guide holes are all expanded to the required aperture, the drilling machine is dismantled, the working surface is cleaned, the wellhead protection work is carried out, and the construction of the underground temporary air return channel is finished. The invention successfully solves the ventilation problem of the underground ventilation blind area, improves the working efficiency, improves the working environment, has simple operation, accelerates the construction speed of the mine, saves the cost and improves the economic benefit.

Description

Construction process of underground temporary return air channel
Technical Field
The invention belongs to the technical field of underground ventilation of coal mines, and particularly relates to a construction process of an underground temporary return air channel.
Background
The underground of a coal mine often forms a ventilation blind area without a ventilation system temporarily, or the underground coal mine has insufficient return air quantity and long return air route, and seriously influences the development and construction of a roadway. In order to solve the problems, a temporary return air channel needs to be additionally tunneled to form a normal ventilation system. According to the traditional method, if the traditional construction process of drilling, blasting and slag tapping is adopted to carry out the tunneling of the special return air channel, the problems of high construction difficulty, high cost and long construction period exist.
Disclosure of Invention
The invention aims to solve the problems of high construction difficulty, high cost and long construction period of the traditional construction process of drilling, blasting and deslagging for constructing a temporary air return channel, and provides a construction process of the temporary air return channel.
The technical scheme for solving the technical problem is as follows:
a construction process of a temporary return air channel comprises the following steps:
determining a return air main roadway closest to the underground ventilation blind area according to the relationship between the underground roadway arrangement and the peripheral roadway;
after accurate measurement and positioning, arranging ventilation chambers for controlling wind at corresponding positions of the underground ventilation blind area and the air return main roadway;
setting up a raise boring machine in the ventilation chambers with higher horizontal positions, and drilling a guide hole between the two ventilation chambers from top to bottom;
after the pilot hole is drilled through, it isChanging a hob drill bit special for reaming, and reaming from bottom to top;
and after the guide holes are all expanded to the required aperture, the drilling machine is dismantled, the working surface is cleaned, the wellhead protection work is carried out, and the construction of the underground temporary air return channel is finished.
The invention has the beneficial effects that: the problem that the construction difficulty is high, the cost is high and the construction period is long when a temporary air return channel is built by a traditional construction process of drilling, blasting and deslagging is solved, the existing resources are utilized to create conditions, the temporary air return channel with lower construction cost is built, and the ventilation problem of the underground ventilation blind area is successfully solved; the raise boring machine is constructed mechanically and continuously, has high speed, and improves the work efficiency by 5 to 10 times compared with the traditional construction method for driving the roadway. Good conditions are created for later construction, and the comprehensive benefits are remarkable; the raise boring machine adopts a hob cutter to mechanically break rock, so that the damage to surrounding rock is small, the well wall is smooth, and ventilation is facilitated; the construction process has simple operation and flow and low labor intensity of workers; the construction process can quickly solve the problem of temporary ventilation before the formation of a formal ventilation system in underground coal mine construction, thereby accelerating the construction speed of a mine, saving the cost and improving the economic benefit.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The construction process of the temporary return air duct according to the present invention will now be described with reference to the following examples.
The current specific embodiment is as follows:
the first embodiment is as follows: in a coal mine, the tail part of a main inclined shaft in construction is dug to the second level, and when the tail part of the main inclined shaft is developed to 35 meters below the opening of a horizontal coal bunker cleaning roadway, in order to accelerate production, the main inclined shaft is temporarily not extended downwards under the condition of meeting the requirement of belt tail installation of the horizontal main shaft, so that the lowest part of the main inclined shaft temporarily forms a ventilation blind area without a ventilation system in a 35-meter roadway, and a temporary return air channel is required to be dug to form a normal ventilation system. The construction process of the temporary return air channel comprises the following specific steps:
determining a horizontal panel area air return main lane which is 65 meters above the main inclined shaft in an inclined manner according to the relationship between the arrangement of the underground lanes and the peripheral lanes;
after accurate measurement and positioning, arranging ventilation chambers for controlling wind at the corresponding positions of the lowest part of the main inclined shaft and a horizontal panel return air main roadway;
a raise boring machine is erected in the ventilation chambers of the air return main lane of the horizontal panel area, and a guide hole is drilled between the two ventilation chambers from top to bottom;
after the guide hole is drilled through, replacing a hob drill bit special for reaming, and expanding the aperture to 1.2 meters from bottom to top;
and after the guide holes are all expanded to the required aperture, the drilling machine is dismantled, the working surface is cleaned, the wellhead protection work is carried out, and the construction of the underground temporary air return channel is finished.
Example two: in the early stage of forming the main air return system, air must be returned from the tail part of a horizontal main shaft, the air return quantity is insufficient, the air return path is long, the development construction of the second level is seriously influenced, and a temporary air return channel must be additionally tunneled to form a normal ventilation system. The construction process of the temporary return air channel comprises the following specific steps:
determining two horizontal development roadways and one horizontal return air main roadway to be overlapped according to the relationship between the arrangement of the underground roadway and the peripheral roadway, wherein the distance between the two horizontal development roadways and the one horizontal return air main roadway is 76 meters;
after accurate measurement and positioning, arranging ventilation chambers for controlling wind at corresponding positions of the two horizontal development roadways and the one horizontal return air main roadway;
a raise boring machine is erected in the ventilation chambers of a horizontal air return main roadway, and a guide hole is drilled between the two ventilation chambers from top to bottom;
after the guide hole is drilled through, replacing a hob drill bit special for reaming, and expanding the aperture to 1.2 meters from bottom to top;
and after the guide holes are all expanded to the required aperture, the drilling machine is dismantled, the working surface is cleaned, the wellhead protection work is carried out, and the construction of the underground temporary air return channel is finished.
In the two embodiments, the air volume which can pass through each drilling hole can be ensured to be about 1400 cubic meters per minute by expanding the aperture to 1.2 meters, so that the problem of difficult ventilation in the two areas is solved safely in a time-saving and labor-saving manner.
While the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (2)

1. The construction process of the temporary return air channel is characterized by comprising the following steps of:
determining a return air main roadway closest to the underground ventilation blind area according to the relationship between the underground roadway arrangement and the peripheral roadway;
after accurate measurement and positioning, arranging ventilation chambers for controlling wind at corresponding positions of the underground ventilation blind area and the air return main roadway;
setting up a raise boring machine in the ventilation chambers with higher horizontal positions, and drilling a guide hole between the two ventilation chambers from top to bottom;
after the guide hole is drilled through, replacing a hob drill bit special for reaming, and reaming from bottom to top;
and after the guide holes are all expanded to the required aperture, the drilling machine is dismantled, the working surface is cleaned, the wellhead protection work is carried out, and the construction of the underground temporary air return channel is finished.
2. The process of claim 1, wherein the process comprises the following stepsThe pores were expanded to a pore size of 1.2 m.
CN201811363650.7A 2018-11-16 2018-11-16 Construction process of underground temporary return air channel Pending CN111197493A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811363650.7A CN111197493A (en) 2018-11-16 2018-11-16 Construction process of underground temporary return air channel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811363650.7A CN111197493A (en) 2018-11-16 2018-11-16 Construction process of underground temporary return air channel

Publications (1)

Publication Number Publication Date
CN111197493A true CN111197493A (en) 2020-05-26

Family

ID=70743555

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811363650.7A Pending CN111197493A (en) 2018-11-16 2018-11-16 Construction process of underground temporary return air channel

Country Status (1)

Country Link
CN (1) CN111197493A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050000555A1 (en) * 2003-07-01 2005-01-06 Application Des Gaz Camping tent with improved ventilation
CN102003202A (en) * 2010-10-15 2011-04-06 北京中煤矿山工程有限公司 Safety emergency rescue and escape system for mine and construction steps thereof
CN201810338U (en) * 2010-10-15 2011-04-27 北京中煤矿山工程有限公司 Safety emergency rescue system for mine
CN203201581U (en) * 2013-04-10 2013-09-18 玉溪大红山矿业有限公司 Efficient circulating ventilation structure for high, deep and straight draw shaft
CN105064982A (en) * 2015-08-03 2015-11-18 中煤科工集团西安研究院有限公司 Precise guide butt joint equipment for coal field ground hole and target points in underground roadway and precise guide butt joint method for coal field ground hole and target points in underground roadway
CN105221179A (en) * 2015-10-21 2016-01-06 太原理工大学 A kind of highly gassy mine Y type method of ventilation
CN106401481A (en) * 2016-08-30 2017-02-15 贵州铁鳄矿山装备制造有限公司 Raise boring machine for broaching of inclined holes of mine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050000555A1 (en) * 2003-07-01 2005-01-06 Application Des Gaz Camping tent with improved ventilation
CN102003202A (en) * 2010-10-15 2011-04-06 北京中煤矿山工程有限公司 Safety emergency rescue and escape system for mine and construction steps thereof
CN201810338U (en) * 2010-10-15 2011-04-27 北京中煤矿山工程有限公司 Safety emergency rescue system for mine
CN203201581U (en) * 2013-04-10 2013-09-18 玉溪大红山矿业有限公司 Efficient circulating ventilation structure for high, deep and straight draw shaft
CN105064982A (en) * 2015-08-03 2015-11-18 中煤科工集团西安研究院有限公司 Precise guide butt joint equipment for coal field ground hole and target points in underground roadway and precise guide butt joint method for coal field ground hole and target points in underground roadway
CN105221179A (en) * 2015-10-21 2016-01-06 太原理工大学 A kind of highly gassy mine Y type method of ventilation
CN106401481A (en) * 2016-08-30 2017-02-15 贵州铁鳄矿山装备制造有限公司 Raise boring machine for broaching of inclined holes of mine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
谭花文等: "鑫源煤矿通风系统优化改造研究", 《煤炭工程》 *

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