CN114412540A - Method and system for controlling dust removal of driving face of tunneling and anchoring all-in-one machine - Google Patents

Abstract

The invention relates to a method and a system for controlling dust removal at the tunneling working surface of an integrated bolt digging machine, belonging to the technical field of mine dust prevention and control. In order to solve the problem that large-scale dust removal equipment and hard dust extraction air ducts cannot be arranged near the working face due to the limitation of the production process of the bolt-mining integrated machine driving the working face. Dust removal fan for dust treatment. The invention adopts the method of "moving the dust first, and then disposing of it", placing the large-scale dust removal equipment at the rear, overcoming the problem caused by the limited space, and has a larger air volume for processing, and realizes the dust in the working face of the bolt-digging integrated machine. The theoretical dust reduction rate can reach 100%, and the actual dust reduction efficiency can reach more than 90%, which can significantly improve the working environment. In addition, it has the advantage of low cost and great promotion value.

Description

A method and system for controlling dust removal in the tunneling face of an all-in-one bolter-digger

technical field

The invention belongs to the technical field of mine dust prevention and control, and relates to a method and a system for controlling dust removal in the tunneling working face of an integrated bolt-mining machine.

Background technique

With the increasing degree of mechanization of excavation equipment, modern large-scale mines have developed an integrated anchor excavator that integrates excavation and support, realizing the excavation volume of more than 2000m per month, greatly promoting the excavation speed of the roadway and easing the excavation. imbalance problem. However, it is accompanied by the problem of high-concentration dust hazards. Under the condition that the footage increases several times a day and the ventilation volume basically does not change, the dust concentration of the tunneling working face of the bolt-mining machine is several times higher than that of the fully mechanized tunneling working face, which has become a problem of excavation. The first disaster factor in the tunneling face of the anchor machine.

In the traditional fully mechanized excavation working face, the dust suction port is extended to the surface of the roadheader through the hard dust extraction air duct arranged in the roadway space. The equipment for the tunneling face of the bolt-digger is different from the traditional fully mechanized face. The bolt-digger is often used in combination with a bolt trolley and a self-moving tail to meet the needs of drilling and support while driving. Three The equipment has no solid connection, and is limited by the space of the roadway. At the same time, due to the large size of the integrated anchor digging machine and the bolt trolley, the effective section of the roadway is almost blocked, and it is impossible to erect a hard air duct and extend the dust suction port to the position where the integrated anchor digging machine is close to the head. It is difficult to realize the integrated anchor digging. Efficient collection and treatment of dust in the tunneling face.

SUMMARY OF THE INVENTION

In view of this, the purpose of the present application is to provide a method and system for controlling dust removal in the tunneling face of the integrated bolt-mining machine, so as to realize the efficient collection and processing of dust in the tunneling working face of the integrated bolt-mining machine.

To achieve the above object, the present invention provides the following technical solutions:

A method for controlling dust removal in the tunneling working surface of the integrated bolt boring machine. First, the dust generated in the production process of the integrated bolt boring machine is moved to the rear side of the integrated bolt boring machine or the bolt trolley, and then the dust generated by the integrated bolt boring machine is moved along the slideway by following the integrated bolt boring machine. High-power dust removal fans are used for dust treatment.

Optionally, the dust generated during the production process of the integrated anchor digging machine is first collected by a dust extraction fan located on the body of the integrated anchor digging machine and provided with a dust extraction air duct, and then passed through a soft air blower arranged at the air outlet of the dust extraction fan. The cylinder is moved to the rear side of the bolt-digging integrated machine or the bolting trolley, and then sucked into the dust-removing fan through the hard negative-pressure dust-extracting air cylinder connected to the dust suction port of the dust-removing fan for air purification.

Optionally, the dust removal air volume Q3 of the dust removal fan is greater than the air supply volume Q1 of the excavation surface, so as to form a negative pressure ventilation from the dust removal fan suction port to the dust removal fan air outlet, so as to control the dust from the dust removal fan to the anchor excavating machine. within the space.

Optionally, the dust removal air volume Q3 of the dust removal fan > the supply air volume Q1 of the tunnel face > the suction air volume Q2 of the dust extraction fan, so that the dust discharged from the soft air duct can be completely inhaled by the dust suction port of the dust removal fan.

An all-in-one bolter excavating surface control dust removal system, comprising a dust extraction fan arranged on the bolter excavator integrated machine to suck the dust of the excavation surface, and a soft air duct is connected to the air outlet of the dust extraction fan to move the dust to the excavating anchor The all-in-one machine or the rear side of the bolting trolley; it also includes a dust removal fan located on the rear side of the all-in-one bolting machine or the bolting trolley and can follow the all-in-one bolting machine to move along the slideway. The air inlet of the dust removal fan is fixedly connected with a hard negative. The other end of the negative pressure dust extraction air duct extends to the air outlet of the soft air duct, and the dust suction port of the negative pressure dust extraction air duct and the air outlet of the soft air duct are connected in space. In the form of front pressure and back pumping.

Optionally, the dust removal fan is arranged on the second carriage or the slideway.

Optionally, the length of the negative pressure dust extraction air duct is ≥20m.

The beneficial effect of the invention is that: adopting the method of "moving the dust first, then processing it", the large-scale dust removal equipment is placed in the rear, which overcomes the problem caused by the limited space and solves the problem of the tunneling work limited by the bolt-digging integrated machine. Due to the production process of the working face, the problem that large dust removal equipment and hard dust extraction air ducts cannot be arranged near the working face, and it has a larger processing air volume, which realizes the efficient collection and treatment of the dust in the working face of the bolt-mining integrated machine. The dust volume reaches 100%, and the on-site dust reduction efficiency can reach more than 90%, which can significantly improve the working environment, thereby solving the problem of serious dust hazards in the tunneling face of the bolt-mining integrated machine. In addition, it has the advantage of low cost and great promotion value.

Other advantages, objects and features of the present invention will be set forth in the description which follows, to the extent that will be apparent to those skilled in the art based on a study of the following, or may be learned from is taught in the practice of the present invention. The objectives and other advantages of the present invention may be realized and attained by the following description.

Description of drawings

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be preferably described in detail below with reference to the accompanying drawings, wherein:

FIG. 1 is a schematic diagram of the tunneling face control dust removal system of the bolt-and-bolt-digger integrated machine of the present invention.

Reference numerals: dust extraction fan 1 , bolt-digging integrated machine 2 , soft air duct 3 , bolt trolley 4 , negative pressure dust extraction air duct 5 , dust removal fan 6 , supply fan 7 .

Detailed ways

The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only used to illustrate the basic idea of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

Among them, the accompanying drawings are only used for exemplary description, and represent only schematic diagrams, not physical drawings, and should not be construed as limitations of the present invention; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings will be omitted, The enlargement or reduction does not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the accompanying drawings may be omitted.

The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms “upper”, “lower”, “left” and “right” , "front", "rear" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must be It has a specific orientation, is constructed and operated in a specific orientation, so the terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration, and should not be construed as a limitation of the present invention. situation to understand the specific meaning of the above terms.

Referring to Fig. 1, a method for controlling dust removal on the tunneling working surface of the all-in-one bolt digging machine is to first move the dust generated during the production process of the all-in-one bolt digging machine 2 to the rear side of the all-in-one bolt digging machine 2 or the bolt trolley 4, and then follow the The high-power dust-removing fan 6 that moves along the slideway of the integrated machine 2 performs dust treatment.

The invention adopts the method of "moving the dust first, and then disposing it", placing the large-scale dust removal equipment at the rear, overcoming the problems caused by the limited space, and having a larger processing air volume; The dust removal fan is affected by the space, the volume of the dust removal fan is small, and the processing air volume cannot meet the problem of high-intensity dust generated by the excavation of the integrated bolter.

Optionally, the dust generated in the production process of the integrated anchor digging machine 2 is first collected by the dust extraction fan 1 located on the body of the integrated anchor digging machine and provided with a dust extraction air duct, and then passed through the soft dust collector arranged at the air outlet of the dust extraction fan. The mass air duct 3 is moved to the rear side of the bolt-digging integrated machine 2 or the bolting trolley 4, and then sucked into the dust removal fan 6 through the hard negative pressure dust extraction air duct 5 connected to the dust suction port of the dust removal fan 6 for air purification.

Optionally, the dust removal air volume Q3 of the dust removal fan 6 > the air supply volume Q1 of the tunnel face, so as to form a negative pressure ventilation from the dust suction port of the dust removal fan 6 to the air outlet of the dust removal fan 6, change the direction of air flow in this area, and realize the dust removal. It is controlled in the space between the dust removal fan 6 and the bolt-digger integrated machine 2 without leakage, so as to achieve efficient dust collection and treatment.

Optionally, the dust removal air volume Q3 of the dust removal fan 6 > the supply air volume Q1 of the tunnel face > the suction air volume Q2 of the dust extraction fan 1 , so that the dust discharged from the soft air duct 3 can be completely inhaled by the dust suction port of the dust removal fan 6 .

An all-in-one bolter excavator tunneling face control dust removal system, comprising a dust extraction fan 1 arranged on the bolter excavator 2 to suck the excavation surface dust, and a soft air duct 3 is connected to the air outlet of the dust extraction fan 1 to remove the dust from the excavation surface. The dust is moved to the rear side of the all-in-one bolt digging machine 2 or the bolt trolley 4; it also includes a dust removal fan 6 located on the rear side of the all-in-one bolt digging machine 2 or the bolt trolley 4 and can follow the all-in-one bolt digging machine 2 to move along the slideway to remove dust. The air inlet of the fan 6 is connected with a hard negative pressure dust extraction air duct 5, the other end of the negative pressure dust extraction air duct 5 extends to the air outlet of the soft air duct 3, and the dust suction port of the negative pressure dust extraction air duct 5. It is connected with the air outlet of the soft air duct in space to form a form of front pressure and back extraction to ensure maximum efficiency to collect the transferred dust-laden airflow.

Optionally, the soft air duct 3 is arranged obliquely upward; the dust removal fan 6 is arranged at the tail of the self-moving machine or on the slideway through a trolley; The dust suction port corresponds to the dust discharge port of the soft air duct 3 .

The invention proposes the dust removal theory of "pressing before and pumping after", that is, "moving the dust first, then treating it". By arranging an extracting fan on the machine 2 of the integrated anchor excavating machine, the air outlet of the fan is connected to a section of soft air duct 3. In order to move the dust generated during the production process of the integrated bolt digging machine 2 to the rear side of the integrated bolt digging machine 2 or the bolt trolley 4, and then pass the negative pressure dust extraction air duct 5 arranged on the second transport and slideway to remove dust. The fan 6 performs dust treatment.

The present invention changes the head-on local flow field by "pressing forward and pumping back", controls the dust within a limited range of the head-on, realizes the local elimination of the dust, prevents the further spread of the dust, has obvious effect of controlling the dust and reduces the impact of the dust on the operators. hazard. The invention solves the problems caused by the limited space, and overcomes many problems existing in the process of implementing the theory of long pressure and short extraction for dust prevention in the tunneling working face of the bolt-mining integrated machine.

Example

As shown in Figure 1, F1 is the local air supply fan 7, Q1 is the air supply volume of the driving face; F2 is the dust extraction fan 1 designed to be fixed on the bolt excavator 2, The suction air volume is Q2; F3 is the dust removal fan 6, and the processing air volume is Q3; the air volume is: Q3>Q1>Q2. Since Q3 is the largest, the head-on air supply volume is smaller than the hard air duct suction air volume, part of the air volume from the air outlet of the dust removal fan 6 enters the exhaust system at the speed v3, and the other part of the air volume flows head-on at the speed v2, the direction is from the roadway to the head-on, At this time, the stroke from the F3 position to the position of the dust extraction port of the hard negative pressure dust extraction air duct 5 is a negative pressure area, which creates the effect of local negative pressure ventilation, controls the dust within the dust diffusion boundary, and solves the problem of digging anchors. The problem of dust diffusion in the tunneling face of the integrated machine. In Figure 1, v1 is the wind speed of the dust extraction fan 1, and v1, v2, and v3 meet the wind speed requirements of the coal mine safety regulations.

The invention eliminates the influence of the negative pressure dust extraction air duct 5 that cannot pass through the bolt-digging integrated machine 2 and the bolt trolley 4, changes the full negative pressure dust extraction to the "front pressure and rear extraction" type, and adopts the front-end dust extraction method. The method of "moving first, then processing" has a larger air volume, which realizes the efficient collection and on-site treatment of the dust in the tunneling face of the bolt-mining integrated machine; the air flow is used to control the dust within the range from the suction port to the head. , preventing the further spread of dust and further improving the dust reduction rate. The dust suppression efficiency of the invention can reach more than 90%, the working environment can be obviously improved, and the problem of serious dust damage on the tunneling face of the integrated bolt-mining machine can be solved. In addition, it has the advantage of low cost and great promotion value.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent replacements, without departing from the spirit and scope of the technical solution, should all be included in the scope of the claims of the present invention.

Claims (7)

1. A dust control and removal method for a driving face of a tunneling and anchoring all-in-one machine is characterized by comprising the following steps: firstly, dust generated in the production process of the tunneling and anchoring all-in-one machine is moved to the rear side of the tunneling and anchoring all-in-one machine or the anchor rod trolley, and then dust treatment is carried out through a high-power dust removal fan which moves along a slide way along with the tunneling and anchoring all-in-one machine.

2. The dust control and removal method for the driving face of the driving and anchoring all-in-one machine as claimed in claim 1, wherein the dust control and removal method comprises the following steps: dust generated in the production process of the tunneling and anchoring all-in-one machine is collected through a dust suction fan which is arranged on a machine body of the tunneling and anchoring all-in-one machine and is provided with a dust suction air duct, then the dust is moved to the rear side of the tunneling and anchoring all-in-one machine or an anchor rod trolley through a soft air duct arranged at an air outlet of the dust suction fan, and then the dust is sucked into a dust removal fan through a hard negative-pressure dust suction air duct connected with a dust suction port of the dust removal fan to carry out air flow purification.

3. The dust control and removal method for the driving face of the driving and anchoring all-in-one machine as claimed in claim 2, wherein the dust control and removal method comprises the following steps: the dust removal air quantity Q3 of the dust removal fan is larger than the air supply quantity Q1 of the tunneling surface, so that negative pressure ventilation of a section of roadway from a dust collection port of the dust removal fan to an air outlet of the dust removal fan is formed, and dust is controlled in the space from the dust removal fan to the tunneling and anchoring integrated machine.

4. The dust control and removal method for the driving face of the driving and anchoring all-in-one machine as claimed in claim 2, wherein the dust control and removal method comprises the following steps: the dust removal air quantity Q3 of the dust removal fan is larger than the air supply quantity Q1 of the tunneling surface and larger than the air suction quantity Q2 of the dust extraction fan, so that dust discharged by the soft air cylinder can be completely sucked by a dust suction opening of the dust removal fan.

5. The utility model provides a dig anchor all-in-one tunnelling working face accuse dust pelletizing system which characterized in that: the dust extraction fan is arranged on the tunneling and anchoring integrated machine to extract dust on a tunneling surface, and a soft air duct is connected to an air outlet of the dust extraction fan to move the dust to the rear side of the tunneling and anchoring integrated machine or the anchor rod trolley; the device is characterized by further comprising a dust removal fan which is located on the rear side of the tunneling and anchoring all-in-one machine or the anchor rod trolley and can move along the slide way along the tunneling and anchoring all-in-one machine, an air inlet of the dust removal fan is fixedly connected with a hard negative-pressure dust extraction air cylinder, the other end of the negative-pressure dust extraction air cylinder extends to an air outlet of the soft air cylinder, and a dust suction port of the negative-pressure dust extraction air cylinder is in butt joint with the air outlet of the soft air cylinder in space so as to form a form of forward pressing and backward drawing.

6. The heading face dust control system of the heading and anchoring all-in-one machine as claimed in claim 5, wherein: the dust removal fan is arranged on the second transportation or the slide way.

7. The heading face dust control system of the heading and anchoring all-in-one machine as claimed in claim 5, wherein: the length of the negative pressure dust extraction air duct is more than or equal to 20 m.

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