阅读说明：本技术 一种矿井用煤段下筛管工艺方法 (Process method for screening pipes under coal section for mine ) 是由 江庆 陶任彬 战南 于 2020-04-14 设计创作，主要内容包括：本发明公开一种矿井用煤段下筛管工艺方法,该方法包括以下步骤：步骤一、底板穿层钻孔施工计算,计算穿越煤层段的长度,该长度根据所需的钻孔孔深、顶板或底板的岩层段的厚度、倾角、方位角来进行计算；步骤二、钻孔通过钻机钻进至开孔深度后,在钻孔内安装轻质探管、筛管；筛管安装在轻质探管顶端,轻质探管顶端位于岩层段、煤层段交界处；轻质探管置于钻孔内岩层段,筛管置于钻孔内煤层段；筛管上设置有筛孔,筛孔贯穿筛管管身,若干筛孔设置在筛管末端的管身上；步骤三、经过筛管抽采钻孔内瓦斯。本发明具有节约材料费用,降低工艺成本,提高安全系数的特点。(The invention discloses a process method for screening pipes under a coal section for a mine, which comprises the following steps: step one, calculating the floor crossing drilling construction, and calculating the length of the coal seam crossing, wherein the length is calculated according to the required drilling hole depth, the thickness, the inclination angle and the azimuth angle of the rock layer of the top plate or the bottom plate; step two, after the drill hole is drilled to the opening depth through a drilling machine, installing a light exploring tube and a sieve tube in the drill hole; the sieve tube is arranged at the top end of the light exploring tube, and the top end of the light exploring tube is positioned at the junction of the rock layer section and the coal layer section; the light detecting pipe is arranged in the rock layer section in the drill hole, and the sieve pipe is arranged in the coal layer section in the drill hole; sieve pores are arranged on the sieve tube, penetrate through the tube body of the sieve tube, and are arranged on the tube body at the tail end of the sieve tube; and step three, extracting gas in the drill hole through a sieve tube. The invention has the characteristics of saving material cost, reducing process cost and improving safety coefficient.)

1. A coal section screen pipe descending process method for a mine is characterized by comprising the following steps;

step one, calculating the floor crossing drilling construction, and calculating the length of the coal seam crossing (4), wherein the length is calculated according to the required drilling hole depth, the thickness, the inclination angle and the azimuth angle of the rock layer section (3) of the top plate or the floor;

step two, after the drill hole (1) is drilled to the opening depth through a drilling machine, a light exploring tube (5) and a sieve tube (6) are installed in the drill hole (1); the sieve tube (6) is arranged at the top end of the light exploring tube (5), and the top end of the light exploring tube (5) is positioned at the junction of the rock layer section (3) and the coal layer section (4); the light exploring tube (5) is arranged in the rock layer section (3) in the drill hole (1), and the sieve tube (6) is arranged in the coal layer section (4) in the drill hole (1);

sieve pores (8) are arranged on the sieve tube (6), the sieve pores (8) penetrate through the tube body of the sieve tube (6), and the sieve pores (8) are arranged on the tube body at the tail end of the sieve tube (6);

the sieve tube (6) is provided with a downward-fleeing prevention steel foot wire (9);

and step three, extracting gas in the drill hole (1) through the sieve tube (6).

2. The coal mine section screen pipe descending process method as claimed in claim 1, wherein the top end of the light weight probe (5) is provided with a pipe bracket (7), the pipe bracket (7) is cylindrical, the pipe bracket (7) is matched with the tail end of the screen pipe (6), and the screen pipe (6) is nested in the pipe bracket (7).

3. The method for the process of screening the coal section of the mine shaft under the claim 1 is characterized in that the end of the light probe (5) extends out of the hole (2) at the bottom end of the drill hole (1).

4. The coal section screen pipe descending process method for the mine shaft as claimed in claim 1, wherein a plurality of anti-channeling steel foot wires (9) are dispersedly installed on the end of the screen pipe (6); the tail end of the anti-channeling steel foot wire (9) bends downwards along the inner wall of the drill hole (1).

5. The process of screening the coal mine sections according to claim 3, wherein the anti-channeling steel leg wires (9) are matched with the screen holes (8), the anti-channeling steel leg wires (9) penetrate through the screen pipe (6) through the screen holes (8), and two ends of the anti-channeling steel leg wires (9) are bent downwards along the drilling holes (1).

6. The process method for screening the coal section of the mine well under the coal shaft as claimed in claim 1, wherein 2-3 steel footage wires (9) for preventing the coal section from channeling downwards penetrate into the screening holes (8).

7. The process method for screening the coal section of the mine shaft downwards according to the claim 1, wherein the length of the downward-channeling-preventing steel foot wire (9) is 300-400 mm.

8. The process method for screening the coal section of the mine shaft according to claim 1, wherein the anti-channeling steel foot wire (9) is a thin steel strand.

Technical Field

The invention relates to a process method for screening pipes under a coal section for a mine, in particular to a process method for screening pipes under a coal section for a mine, which has the advantages of saving material cost, reducing process cost and improving safety coefficient.

Background

At present, the task of coal mine gas disaster control is difficult, and particularly, the gas disaster is one of five common underground natural disasters.

As the geological conditions of part of mining areas are complex, the coal seam has the characteristics of softness, breakage, easy collapse, uneven thickness of the coal seam and the like, the characteristics require that the construction process needs to put a sieve tube to the whole coal section to prevent hole collapse of the drilled hole and ensure normal gas extraction, however, the length of the rock section of the floor-crossing drilled hole is far more than that of the coal section, the generally adopted sieve tube putting process is a whole-course sieve tube, so that great material waste is caused in the rock section, the section of the PE extraction sieve tube is reduced, and the internal blockage of the PE extraction sieve tube is easily caused.

Disclosure of Invention

The invention aims to provide a process method for screening pipes under a coal section for a mine, which has the advantages of saving material cost, reducing process cost and improving safety coefficient.

The purpose of the invention can be realized by the following technical scheme:

a process method for screening pipes under a coal section for a mine comprises the following steps:

step one, calculating the floor crossing drilling construction, and calculating the length of the coal seam crossing, wherein the length is calculated according to the required drilling hole depth, the thickness, the inclination angle and the azimuth angle of the rock layer of the top plate or the bottom plate;

step two, after the drill hole is drilled to the opening depth through a drilling machine, installing a light exploring tube and a sieve tube in the drill hole; the sieve tube is arranged at the top end of the light exploring tube, and the top end of the light exploring tube is positioned at the junction of the rock layer section and the coal layer section; the light detecting pipe is arranged in the rock layer section in the drill hole, and the sieve pipe is arranged in the coal layer section in the drill hole;

sieve pores are arranged on the sieve tube, penetrate through the tube body of the sieve tube, and are arranged on the tube body at the tail end of the sieve tube;

the sieve tube is provided with a downward-fleeing prevention steel foot wire;

thirdly, gas in the drill hole is extracted through a sieve tube;

the top end of the light exploring tube is provided with a tube support, the tube support is cylindrical, the tube support is matched with the tail end of the sieve tube, and the sieve tube is nested in the tube support;

the tail end of the light probe extends out of the hole at the bottom end of the drill hole;

a plurality of anti-channeling steel foot wires are dispersedly arranged at the tail end of the sieve tube; the tail end of the anti-channeling steel leg wire is bent downwards along the inner wall of the drill hole;

the anti-channeling steel foot wires are matched with the sieve holes, the anti-channeling steel foot wires penetrate through the sieve tube through the sieve holes, and two ends of the anti-channeling steel foot wires are bent downwards along the drill holes;

2-3 steel foot wires preventing downward channeling penetrate through the sieve pores;

the length of the anti-channeling steel leg wire is 300-400 mm;

the anti-channeling steel foot wire is a thin steel strand.

The invention provides a process method for screening pipes under a coal section for a mine, which has the characteristics of saving material cost, reducing process cost and improving safety factor. The invention has the beneficial effects that: the light exploring tube supports the sieve tube through the tube support, and the sieve tube used in the whole process is reduced to the sieve tube used in the coal seam section; the sieve tube used by the rock stratum section is saved, the material cost is saved, the section of the sieve tube made of PE material is reduced, and the inner part of the sieve tube is easy to be blocked; the light probe can be recycled, so that the process cost is further reduced;

the light exploring tube is manually put into the drill hole, so that the light exploring tube is lighter and faster compared with a drilling machine for loading and unloading the drill rod into the drill hole, the drilling machine operation and the working procedure of adding the drill rod by personnel are reduced, and the operation safety coefficient is improved;

the two ends of the downward-fleeing-prevention steel foot wire are bent downwards along the drill hole, one end of the downward-fleeing-prevention steel foot wire is abutted against the inner wall of the drill hole, and the problem that the screen pipe flees downwards in the process of being fed into the drill hole to cause dangerous accidents is avoided.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of a lower screen pipe of the coal section lower screen pipe process method for a mine.

Detailed Description

The purpose of the invention can be realized by the following technical scheme:

a process method for screening pipes under a coal section for a mine comprises the following steps:

step one, calculating the floor crossing drilling construction, referring to fig. 1, calculating the length of the coal seam section 4 to be crossed, wherein the length is calculated according to the required drilling hole depth, the thickness, the inclination angle and the azimuth angle of the rock stratum section 3 of the top plate or the bottom plate;

step two, after the drill hole 1 is drilled to the opening depth through a drilling machine, a light exploring tube 5 and a sieve tube 6 are installed in the drill hole 1; the sieve tube 6 is arranged at the top end of the light exploring tube 5, and the top end of the light exploring tube 5 is positioned at the junction of the rock stratum section 3 and the coal seam section 4; the light exploring tube 5 is arranged in the rock layer section 3 in the drill hole 1, and the sieve tube 6 is arranged in the coal layer section 4 in the drill hole 1;

sieve pores 8 are arranged on the sieve tube 6, the sieve pores 8 penetrate through the tube body of the sieve tube 6, and a plurality of sieve pores 8 are arranged on the tube body at the tail end of the sieve tube 6; gas in the drill hole 1 enters the sieve tube 6 through the sieve holes 8, and the gas is pumped out from the sieve tube 6;

thirdly, gas in the drill hole 1 is extracted through the sieve tube 6;

the top end of the light exploring tube 5 is provided with a tube support 7, the tube support 7 is cylindrical, the tube support 7 is matched with the tail end of the sieve tube 6, and the sieve tube 6 is embedded into the tube support 7; the light exploring tube 5 supports the sieve tube 6 through the tube support 7, and the sieve tube 6 used in the whole process is reduced to the sieve tube 6 used only in the coal seam section 4; the sieve tube 6 used by the rock stratum section 3 is saved, the material cost is saved, the section of the sieve tube 6 made of PE material is reduced, and the inner part of the sieve tube 6 is easy to be blocked; the light probe 5 can be recycled, so that the process cost is further reduced;

the light exploring tube 5 is manually put into the drill hole 1, so that the light exploring tube is lighter and faster compared with a drilling machine for loading and unloading a drill rod into the drill hole 1, the operation of the drilling machine and the working procedures of loading and unloading the drill rod by personnel are reduced, and the operation safety coefficient is improved;

the tail end of the light probe 5 extends out of the hole 2 at the bottom end of the drill hole 1;

the anti-channeling steel foot wires 9 are arranged on the sieve tube 6, and the anti-channeling steel foot wires 9 are dispersedly arranged at the tail end of the sieve tube 6; the tail end of the downward fleeing prevention steel leg wire 9 is bent downwards along the inner wall of the drill hole 1;

the downward-movement-preventing steel foot wires 9 are matched with the sieve holes 8, the downward-movement-preventing steel foot wires 9 penetrate through the sieve tube 6 through the sieve holes 8, two ends of the downward-movement-preventing steel foot wires 9 are bent downwards along the drill hole 1, one end of the downward-movement-preventing steel foot wires 9 abuts against the inner wall of the drill hole 1, and the sieve tube 6 is prevented from moving downwards in the process of being sent into the drill hole 1 to cause dangerous accidents;

2-3 anti-downward-channeling steel foot wires 9 penetrate through the sieve holes 8, and the length of each anti-downward-channeling steel foot wire 9 is 300-400 mm; the anti-channeling steel foot wire 9 is a thin steel strand.

The working principle of the invention is as follows:

after a drill hole 1 is drilled to the opening depth through a drilling machine, a light exploring tube 5 and a sieve tube 6 are arranged in the drill hole 1; the sieve tube 6 is arranged at the top end of the light exploring tube 5, and the top end of the light exploring tube 5 is positioned at the junction of the rock stratum section 3 and the coal seam section 4; the light exploring tube 5 is arranged in the rock layer section 3 in the drill hole 1, and the sieve tube 6 is arranged in the coal layer section 4 in the drill hole 1;

the light exploring tube 5 supports the sieve tube 6 through the tube support 7, and the sieve tube 6 used in the whole process is reduced to the sieve tube 6 used only in the coal seam section 4; the sieve tube 6 used by the rock stratum section 3 is saved, the material cost is saved, the section of the sieve tube 6 made of PE material is reduced, and the inner part of the sieve tube 6 is easy to be blocked; the light probe 5 can be recycled, so that the process cost is further reduced;

the light exploring tube 5 is manually put into the drill hole 1, so that the light exploring tube is lighter and faster compared with a drilling machine for loading and unloading a drill rod into the drill hole 1, the operation of the drilling machine and the working procedures of loading and unloading the drill rod by personnel are reduced, and the operation safety coefficient is improved;

the two ends of the downward-fleeing-prevention steel foot wire 9 are bent downwards along the drill hole 1, one end of the downward-fleeing-prevention steel foot wire 9 abuts against the inner wall of the drill hole 1, and the problem that the screen pipe 6 flees downwards in the process of feeding the screen pipe into the drill hole 1 to cause dangerous accidents is avoided.

The invention provides a process method for screening pipes under a coal section for a mine, which has the characteristics of saving material cost, reducing process cost and improving safety factor. The invention has the beneficial effects that: the light exploring tube supports the sieve tube through the tube support, and the sieve tube used in the whole process is reduced to the sieve tube used in the coal seam section; the sieve tube used by the rock stratum section is saved, the material cost is saved, the section of the sieve tube made of PE material is reduced, and the inner part of the sieve tube is easy to be blocked; the light probe can be recycled, so that the process cost is further reduced;

the light exploring tube is manually put into the drill hole, so that the light exploring tube is lighter and faster compared with a drilling machine for loading and unloading the drill rod into the drill hole, the drilling machine operation and the working procedure of adding the drill rod by personnel are reduced, and the operation safety coefficient is improved;

the two ends of the downward-fleeing-prevention steel foot wire are bent downwards along the drill hole, one end of the downward-fleeing-prevention steel foot wire is abutted against the inner wall of the drill hole, and the problem that the screen pipe flees downwards in the process of being fed into the drill hole to cause dangerous accidents is avoided.

The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.