Construction method of tunnel turning with integrated drilling and anchoring machine

Abstract

The present invention discloses a tunnel turning construction method using a digging and anchoring machine. The tunnel turning construction method includes: providing a digging and anchoring machine, placing the digging and anchoring machine in a target coal seam, the target coal seam consisting of a tunnel and a cut hole, excavating the digging and anchoring machine along the extension direction of the tunnel to the cut hole and then stopping, retreating the digging and anchoring machine to a bevel cutting position, adjusting the digging direction of the digging and anchoring machine, and cutting into the mining face of the tunnel with an extreme bevel cutting method, wherein the distance of the beveled portion of the mining face of the tunnel along the extension direction of the tunnel is less than the distance between the bevel cutting position and the cut hole along the extension direction of the tunnel, repeatedly adjusting the digging direction of the digging and anchoring machine and extreme bevel cutting of the mining face of the tunnel until the digging and anchoring machine excavates into the cut hole again, and the digging direction of the digging and anchoring machine is consistent with the extension direction of the cut hole. The construction method of the present invention can reduce the expansion area of ​​the mining face at the turning point of the digging and anchoring equipment, thereby reducing construction risks.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel excavation, and in particular to a tunnel turning construction method of an integrated excavator and anchor machine. Background Art

[0002] At present, the primary mining height of my country's fully mechanized mining technology has increased from 3.5m to 8.5m. As fully mechanized mining technology and equipment continue to develop in the direction of high productivity and large-scale, it is necessary to increase the cross-sectional size of the "two tunnels and one eye" (i.e., the transport tunnel, return air tunnel, and cut-eye of the fully mechanized mining face) serving the fully mechanized mining face. Large-scale tunneling equipment, represented by integrated drilling and anchoring machines, has a large body. When encountering right-angle turns such as cut-eyes during tunnel excavation, the side walls of the tunnel need to be expanded. In related technologies, the trajectory of the expanded side walls is arc-shaped or straight-line, and the turning radius is large, resulting in an increase in the top control area at the turn, which increases the support strength of the tunnel wall, high support requirements, many unsafe factors, and high construction risks. Therefore, how to reduce the top control area at the turn when large equipment turns and reduce construction risks has become an important factor that needs to be considered in the tunneling construction of large equipment. Summary of the Invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention proposes a tunnel turning construction method for a digging and anchoring machine, which can reduce the top control area at the turning point during the turning process of the digging and anchoring equipment, thereby reducing construction risks.

[0005] The tunnel turning construction method of the integrated anchoring and digging machine according to the embodiment of the present invention includes:

[0006] A mining and anchoring machine is provided, the mining and anchoring machine comprising a vehicle body and a cutting drum provided on the vehicle body, the cutting drum being retractable along the width direction of the vehicle body; the mining and anchoring machine is placed in a target coal seam, the target coal seam being composed of a tunnel and a cut hole; the cutting drum is extended, the mining and anchoring machine excavates along the extension direction of the tunnel to the cut hole and then stops, and the mining and anchoring machine retreats to an oblique cutting position; the excavation direction of the mining and anchoring machine is adjusted so that the excavation direction of the mining and anchoring machine intersects with the extension direction of the tunnel, and the mining and anchoring machine is moved to a predetermined position. The integrated machine cuts into the mining face of the tunnel in an extreme oblique cutting manner, and after the integrated mining and anchoring machine cuts obliquely, the distance of the oblique part of the mining face of the tunnel along the extension direction of the tunnel is less than the distance between the oblique cutting position and the cutting eye along the extension direction of the tunnel; the excavation direction of the integrated mining and anchoring machine is adjusted repeatedly, and each time the machine cuts into the mining face of the tunnel in an extreme oblique cutting manner, until the integrated mining and anchoring machine excavates into the cutting eye again, and the excavation direction of the integrated mining and anchoring machine is consistent with the extension direction of the cutting eye.

[0007] The tunnel bend construction method using a miner and anchor machine in the present invention ensures tunnel excavation efficiency by using the miner and anchor machine. When encountering a bend, the miner and anchor machine uses multiple extreme bevel cuts to expand the tunnel wall. Compared to expansion methods in related technologies, this reduces the expansion area at the bend, thereby reducing the maximum span of the roof at the bend during support, thereby reducing construction risks and unsafe factors.

[0008] Therefore, the tunnel turning construction method of the anchor-digger machine in the embodiment of the present invention solves the problem of large angle filleting during turning construction of the anchor-digger machine.

[0009] In some embodiments, the distances of the portions of the mining face of the tunnel that are beveled by the anchor and miner each time along the extension direction of the tunnel are the same.

[0010] In some embodiments, during the process of the mining and anchoring machine making multiple extreme oblique cuts into the mining face of the tunnel, the angle between the excavation direction of the mining and anchoring machine and the extension direction of the tunnel gradually increases until the angle is the same as the angle between the extension direction of the tunnel and the extension direction of the cutting eye.

[0011] In some embodiments, after the mining and anchoring machine retreats to the bevel position, the cutting drum is retracted, and the excavation direction of the mining and anchoring machine is adjusted so that the rear end of the vehicle body is against the side wall opposite to the mining face of the tunnel, and the outer edge of the front end face of the cutting drum is against the mining face of the tunnel.

[0012] In some embodiments, each time the excavation direction of the anchor miner is adjusted, the rear end of the vehicle body is abutted against the wall opposite to the mining face of the tunnel and the outer edge of the front end face of the cutting drum is always abutted against the mining face of the tunnel.

[0013] In some embodiments, when the anchor miner is cutting into the side wall of the tunnel at an extreme angle, the cutting drum is always in a cutting operation state.

[0014] In some embodiments, the area cut by the integrated miner and anchorer after multiple extreme bevel cuts on the mining face of the tunnel is an expanded wall area, and the projection of the wall of the expanded wall area on the tunnel floor is a broken line.

[0015] In some embodiments, the mining face of the laneway is taken as the x-axis, the mining face of the cut hole is taken as the y-axis, and the coordinates of the endpoints on the broken line are located at y=8.272×10 -13 x 4 +2.569×10 -8 x 3+3.055×10 -4 x 2 On the curve of +1.93x+6442.

[0016] In some embodiments, after the integrated miner and anchor machine excavates to the cut eye for the first time, the integrated miner and anchor machine stops excavating when it excavates to the side wall opposite to the mining face of the cut eye.

[0017] In some embodiments, after the integrated miner and anchor machine advances to the cut eye again, the integrated miner and anchor machine retreats, the cutting drum extends, and the integrated miner and anchor machine cuts the remaining coal pillars in the cut eye. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of a digging and anchoring machine and a target coal seam in a tunnel turning construction method of a digging and anchoring machine according to an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the initial excavation of the anchoring and digging machine into the cut eye in the tunnel turning construction method of the anchoring and digging machine according to an embodiment of the present invention.

[0020] Figure 3 It is a schematic diagram of a tunnel turning construction method of a digging and anchoring machine according to an embodiment of the present invention, in which the digging and anchoring machine retreats to a cutting position and is adjusted to an extreme orientation.

[0021] Figure 4 It is a schematic diagram of the extreme bevel cutting process of the tunnel turning construction method of the integrated drilling and anchoring machine according to an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the integrated digging and anchoring machine in the tunnel turning construction method according to an embodiment of the present invention, in which the integrated digging and anchoring machine digs into the cut eye again.

[0023] Figure 6 It is a schematic diagram of the tunnel turning construction method of the integrated miner and anchor machine after the right-angle turn construction is completed in an embodiment of the present invention.

[0024] Figure 7 It is a schematic diagram of the expanded area after the expansion is completed in the tunnel turning construction method of the integrated miner and anchor machine according to an embodiment of the present invention.

[0025] Reference numerals:

[0026] Anchoring and digging machine 1, vehicle body 101, cutting drum 102,

[0027] Coal seam 2, roadway 201, cut 202, cut excavated area 2021,

[0028] Expansion Area 3,

[0029] The x-axis is 100 and the y-axis is 200. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0031] The following describes a tunnel turning construction method of a digging and anchoring machine according to an embodiment of the present invention with reference to the accompanying drawings.

[0032] like Figures 1 to 7 As shown, the tunnel turning construction method of the integrated miner and anchor machine according to the embodiment of the present invention includes the following steps:

[0033] S1: Provide an anchor miner 1, which includes a vehicle body 101 and a cutting drum 102 provided on the vehicle body 101. The cutting drum 102 is retractable along the width direction of the vehicle body 101.

[0034] As you can understand, the integrated miner and anchor machine 1 combines both tunneling and support functions, enabling a single machine to simultaneously perform tunneling, coal cutting, and support operations, saving time in adjusting the two machines and thereby increasing the tunneling rate. Due to its large size, the miner and anchor machine 1 requires cutting the tunnel wall to expand the wall when encountering a turn during tunneling, allowing the miner and anchor machine 1 to continue turning.

[0035] Optionally, a mining and anchoring machine 1 is provided, which is an EJM340 type mining and anchoring machine 1, and the mining and anchoring machine 1 integrates cutting, loading, transportation, walking, anchor protection, and spray dust removal, and can realize parallel mining and anchoring operations, and can be equipped with a continuous transportation system to realize efficient and rapid excavation of coal lanes.

[0036] Furthermore, the anchor miner 1 has a body length of 11,600 mm, and its tail 1 swings 45 degrees left and right, with a swing amplitude of 5,055 mm. The anchor miner 1 comprises a body 101 and a cutting drum 102. The cutting drum 102 is located at the front end of the body 101 and is retractable in the left-right direction. The cutting drum 102 has a length of 4,900 mm in the left-right direction, and can extend 250 mm at each end. When fully extended, the cutting drum 102 has a length of 5,400 mm in the left-right direction. The cutting drum 102 has a cutting and grooving stroke of up to 1,000 mm.

[0037] S2: The miner-bolter 1 is placed in the target coal seam 2, which consists of a tunnel 201 and a cut 202.

[0038] It can be understood that the miner and anchor machine 1 advances along the extension direction of the tunnel 201 to the cut eye 202 for mining. Since the extension direction of the tunnel 201 and the extension direction of the cut eye 202 are perpendicular to each other, the miner and anchor machine 1 needs to turn from the tunnel 201 and enter the cut eye 202.

[0039] S3: The cutting drum 102 extends, and the anchor miner 1 advances along the extension direction of the tunnel 201 to the cut hole 202 and then stops. The anchor miner 1 retreats to the bevel cutting position.

[0040] It is understandable that the bevel position is located in the tunnel 201, and the bevel position is the starting position for the anchor miner 1 to expand the mining face of the tunnel 201. Figure 1 The left wall of the middle tunnel 201. Furthermore, the bevel cutting position can be adjusted within the tunnel 201 according to the length of the anchor miner 1. The longer the anchor miner 1, the greater the distance between the bevel cutting position and the cut 202. Conversely, the shorter the anchor miner 1, the smaller the distance between the bevel cutting position and the cut 202.

[0041] Alternatively, as Figure 2 As shown, the left and right ends of the cutting drum 102 extend, the anchoring and digging machine 1 advances forward to the cut hole 202 and stops digging, and the anchoring and digging machine 1 retreats to the bevel cutting position, and the distance between the bevel cutting position and the cut hole 202 in the front-back direction is L (as shown in FIG. Figure 7 The back wall of the cut 202 is as follows: Figure 1 The back wall of the middle incision 202.

[0042] Specifically, after the cutting drum 102 is extended, the length of the cutting drum 102 in the left-right direction is 5400 mm, and L is 12000 mm.

[0043] S4: As Figure 3 As shown, the excavation direction of the anchoring and digging machine 1 is adjusted so that the excavation direction of the anchoring and digging machine 1 intersects with the extension direction of the tunnel 201. The anchoring and digging machine 1 makes an extreme bevel cut on the mining face of the tunnel 201. After the bevel cut by the anchoring and digging machine 1, the distance of the beveled part of the mining face of the tunnel 201 along the extension direction of the tunnel 201 is less than the distance between the beveled position and the cutting eye 202 along the extension direction of the tunnel 201.

[0044] It is understood that after adjusting the excavation direction, the anchoring and miner 1 is able to achieve a maximum bevel cut into the face of the tunnel 201, ensuring that the excavation direction of the anchoring and miner 1 reaches its maximum position, thereby improving the efficiency of the wall expansion. The maximum position refers to the maximum deflection direction of the anchoring and miner 1 within the tunnel 201.

[0045] Alternatively, as Figure 3 and Figure 7 As shown, the excavation direction of the anchor miner 1 is adjusted, and the anchor miner 1 bevels the left sidewall of the tunnel 201 along the adjusted excavation direction. The beveled portion of the left sidewall of the tunnel 201 is the first beveled portion, and the distance along the front-to-back direction of the first beveled portion is d1, where d1 < L.

[0046] Specifically, after the anchor miner 1 retreats to the beveling position, the left and right ends of the cutting drum 102 are retracted, and the length of the cutting drum 102 in the left-right direction is 4900 mm. After adjusting the anchor miner 1 to the extreme position, the cutting drum 102 bevels the left wall of the tunnel 201, with a d1 value of 1000 mm.

[0047] S5: If Figures 4 to 6 As shown, the excavation direction of the anchoring and digging machine 1 is repeatedly adjusted, and each time the cutting is carried out in an extreme oblique cutting manner to cut into the mining face of the tunnel 201 until the anchoring and digging machine 1 excavates into the cut eye 202 again, and the excavation direction of the anchoring and digging machine 1 is consistent with the extension direction of the cut eye 202.

[0048] It is understood that after the anchor miner 1 completes its first extreme bevel cut into the face of tunnel 201, the anchor miner 1 is no longer in its extreme position and needs to adjust its direction of advance to return it to the extreme position of tunnel 201 before making the next cut. In other words, each adjustment of the anchor miner 1's direction of advance results in a new cut into the face of tunnel 201.

[0049] After the mining and anchoring machine 1 has cut into the mining face of the tunnel 201 for multiple times with extreme oblique cutting, the mining and anchoring machine 1 will dig into the cut eye 202 again, and the digging direction of the mining and anchoring machine 1 at this time is consistent with the extension direction of the cut eye 202, thus completing the wall expansion work.

[0050] Alternatively, as Figure 7 As shown, the anchoring and digging machine 1 is performing wall expansion work on the left wall of the tunnel 201. After the wall expansion is completed, the track formed by multiple cuts left on the left wall of the tunnel 201 is approximately an arc.

[0051] Compared with the related art, the track left by the anchor-digger 1 after wall expansion is an arc or a straight line. The expanded area is large, which makes the span of the tunnel top also large, the construction risk is high, and there are more unsafe factors.

[0052] Therefore, the tunnel turning construction method using a miner and anchor machine according to the present invention ensures tunneling efficiency by using the miner and anchor machine 1 to excavate the tunnel. When encountering a turning, the miner and anchor machine 1 uses multiple extreme bevel cuts to expand the mining face of the tunnel 201. Compared to the expansion work in related technologies, this reduces the expansion area at the turning, thereby reducing the maximum span of the roof at the turning expansion site and reducing construction risks and unsafe factors.

[0053] Furthermore, a chamber can be provided in tunnel 201 for storing equipment, materials, tools, and the like. The extension direction of tunnel 201 and the chamber form an angle. If the angle between tunnel 201 and the chamber is close to 90°, similar to the distribution relationship between tunnel 201 and cut-hole 202, the tunnel turning construction method for an integrated miner and anchor machine according to the present invention can also be used for turning.

[0054] In some embodiments, as Figure 7 As shown, the distances of the parts of the mining face of the tunnel 201 that are beveled by the anchoring and mining machine 1 each time along the extending direction of the tunnel 201 are the same.

[0055] It can be understood that the distance of the part of the mining face of the tunnel 201 that is beveled by the mining and anchoring machine 1 each time along the extension direction of the tunnel 201 is d1. Therefore, after n extreme bevels, the mining and anchoring machine 1 advances to the cutting eye 202 again, and at this time L is equal to n times of d1.

[0056] Therefore, the limit beveling method of uniform and equidistant is satisfied, and the stability of the wall of tunnel 201 during the wall expansion work is improved, thereby making the expanded area and shape reach the optimal level.

[0057] Alternatively, as Figure 7 As shown, L is 12000 mm, and the maximum bevel distance d1 of each cut by the anchor miner 1 is 1000 mm. After ten maximum bevel cuts, the anchor miner 1 advances again to cut hole 202. At this point, the direction of the miner 1 is adjusted to align with the extension direction of cut hole 202, thus completing the wall expansion of tunnel 201.

[0058] In some embodiments, during the process of multiple extreme oblique cuts by the mining and anchoring machine 1 into the mining face of the tunnel 201, the angle between the excavation direction of the mining and anchoring machine 1 and the extension direction of the tunnel 201 gradually increases until the angle is the same as the angle between the extension direction of the tunnel 201 and the extension direction of the cutting eye 202.

[0059] Optionally, the first cutter of the anchor-mining machine 1 cuts the left side wall of the tunnel 201 to the extreme, and the angle between its excavation direction and the front-back direction is a1. The second cutter of the anchor-mining machine 1 cuts the left side wall of the tunnel 201 to the extreme, and the angle between its excavation direction and the front-back direction is a2. Similarly, the angle of the nth cutter is a n , and a1<a2<…<a n .

[0060] In some embodiments, as Figures 1 to 6 As shown, after the anchor miner 1 retreats to the bevel position, the cutting drum 102 is retracted, and the excavation direction of the anchor miner 1 is adjusted so that the rear end of the vehicle body 101 abuts against the wall opposite to the mining face of the tunnel 201, and the outer edge of the front end face of the cutting drum 102 abuts against the mining face of the tunnel 201.

[0061] It is understood that after the anchor miner 1 retreats to the bevel cutting position, the cutting drum 102 is retracted, and a gap is created between the anchor miner 1 and the two walls of the tunnel 201. Therefore, the anchor miner 1 can be tilted, allowing the anchor miner 1 to be positioned in an extreme position.

[0062] Alternatively, as Figure 3 As shown, the cutting drum 102 is retracted, and its left-right length is 4900 mm. The anchor miner 1 is adjusted to its extreme position. At this point, the rear end of the vehicle body 101 abuts the right wall of the tunnel 201, and the outer edge of the front end of the cutting drum 102 abuts the left wall of the tunnel 201. The distance between the point where the outer edge of the front end of the cutting drum 102 abuts the left wall of the tunnel 201 and the beveling position is 1000 mm.

[0063] In some embodiments, each time the excavation direction of the anchor and miner 1 is adjusted, the rear end of the vehicle body 101 is abutted against the side wall of the mining face of the tunnel 201 and the outer edge of the front end face of the cutting drum 102 is always abutted against the mining face of the tunnel 201.

[0064] It can be understood that during the process of expanding the wall with the extreme oblique cutting method, the miner and anchor machine 1 is adjusted to the extreme position, and its extreme position is to make the rear end of the vehicle body 101 collide with the mining surface of the tunnel 201 and the outer edge of the front end face of the cutting drum 102 collide with the mining surface of the tunnel 201.

[0065] Optionally, the anchor miner 1 is performing wall expansion on the left side of the tunnel 201. During the extreme bevel wall expansion process, each time the anchor miner 1 adjusts its excavation direction, the anchor miner 1 is rotated counterclockwise, with the point where the outer edge of the front end of the cutting drum 102 abuts the wall of the expansion zone 3 as the rotation center. From a top-down perspective of the tunnel 201 facing the bottom wall, the anchor miner 1 is rotated counterclockwise, with the rear end of the anchor miner 1 abutting the right side of the tunnel 201. This adjusts the excavation direction of the anchor miner 1 after each cut.

[0066] In some embodiments, when the anchor miner 1 is cutting into the mining face of the tunnel 201 at the extreme angle, the cutting drum 102 is always in the cutting operation state.

[0067] It is understood that during the extreme bevel cutting and expansion process of the anchoring and miner 1, the cutting drum 102 is always in the cutting mode. As the anchoring and miner 1 adjusts its tunneling direction after each cut, the coal seam 2 in front of the anchoring and miner 1 will obstruct the tunneling direction. Therefore, the cutting drum 102 is always in the cutting mode, thus preventing obstruction by the coal seam 2.

[0068] In some embodiments, as Figure 7 As shown, the area cut by the integrated miner and anchorer 1 after multiple extreme bevel cutting on the mining face of the tunnel 201 is the expanded wall area 3, and the projection of the wall of the expanded wall area 3 on the bottom plate of the tunnel 201 is a broken line.

[0069] It can be understood that after the miner and anchor machine 1 makes multiple extreme bevel cuts on the mining face of tunnel 201 and advances to cut hole 202, the area cut off from the mining face of tunnel 201 is called the expanded wall area 3. Each time the miner and anchor machine 1 makes an extreme bevel cut on the mining face of tunnel 201, the track left by the miner and anchor machine 1 on the wall is projected as a straight line segment on the floor of tunnel 201. Therefore, the projection of the wall of expanded wall area 3 on the floor of tunnel 201 is a broken line composed of multiple straight line segments.

[0070] Alternatively, as Figure 7 As shown, since the maximum bevel distance of each time of the anchor and miner 1 in the front-to-back direction is 1000 mm, which is relatively short, the broken line is approximately an arc as a whole.

[0071] In some embodiments, the mining face of the lane 201 is taken as the x-axis 100, the mining face of the cut 202 is taken as the y-axis 200, and the coordinates of the endpoints on the broken line are located at y=8.272×10 -13 x 4 +2.569×10 -8 x 3 +3.055×10 -4 x 2On the curve of +1.93x+6442.

[0072] It can be understood that the extension direction of the tunnel 201 and the extension direction of the cut-eye 202 are perpendicular to each other, and the excavation of the anchor-mining machine 1 from the tunnel 201 to the cut-eye 202 is a right-angle turn and wall expansion construction.

[0073] Furthermore, in a top-down perspective, a coordinate system is constructed with the left sidewall of the tunnel 201 as the x-axis 100, the rear sidewall of the cut 202 as the y-axis 200, and the point where the left sidewall of the tunnel 201 and the rear sidewall of the cut 202 intersect as the origin. The coordinates of all endpoints on the polyline (in other words, the endpoints on each straight line segment) are located at y = 8.272 × 10 -13 x 4 +2.569×10 -8 x 3 +3.055×10 -4 x 2 On the curve of +1.93x+6442.

[0074] In some embodiments, as Figure 2 As shown, after the integrated miner and anchor machine 1 excavates to the cut eye 202 for the first time, when the integrated miner and anchor machine 1 excavates to the mining face of the cut eye 202, the integrated miner and anchor machine 1 stops excavating.

[0075] Optionally, the distance between the front and rear walls of cuthole 202 in the front-to-back direction is 8000 mm. The anchor miner 1 advances in the front-to-back direction within tunnel 201. When the front end of the cutting drum 102 reaches the front wall of cuthole 202, the anchor miner 1 stops advancing. At this point, the cut area within cuthole 202 is referred to as the cuthole-excavated area 2021.

[0076] In some embodiments, as Figure 5 and Figure 6 As shown, after the anchoring and digging machine 1 advances to the cut eye 202 again, the anchoring and digging machine 1 retreats, the cutting drum 102 extends, and the anchoring and digging machine 1 cuts the remaining coal pillars in the cut eye 202 .

[0077] It is understood that once the anchor miner 1 reaches cut 202 again, the wall expansion of roadway 201 is complete. The anchor miner 1 retreats to roadway 201, and the cutting drum 102 extends. The anchor miner 1 cuts the remaining coal pillar in cut 202, completing the right-angle turn in the roadway.

[0078] Alternatively, as Figure 5 and Figure 6As shown, after the wall expansion is complete, a coal pillar remains in the cut hole 202 in front of the expanded area 3. The anchoring and mining machine 1 is retracted into the tunnel 201, and the cutting drum 102 is fully extended to more effectively cut the remaining coal pillar in the cut hole 202. After the anchoring and mining machine 1 has cut the remaining coal pillar in the cut hole 202, it is retracted into the cut hole 202, with the anchoring and mining machine 1 positioned horizontally, thus completing the entire right-angle turn operation.

[0079] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0080] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0081] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0082] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0083] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0084] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present invention.

Claims

1. A tunnel turning construction method for an integrated digging and anchoring machine, characterized in that: include: A miner and anchoring machine is provided, comprising a vehicle body and a cutting drum provided on the vehicle body, wherein the cutting drum is retractable along the width direction of the vehicle body; The integrated miner and anchor machine is placed in a target coal seam, wherein the target coal seam consists of a tunnel and a cut hole; The cutting drum is extended, the anchor-mining machine excavates along the extension direction of the tunnel to the cut hole and then stops, and the anchor-mining machine retreats to the bevel cutting position; Adjusting the excavation direction of the anchoring and digging machine so that the excavation direction of the anchoring and digging machine intersects with the extension direction of the tunnel, the anchoring and digging machine cuts into the mining face of the tunnel in an extreme bevel cutting manner, and after the anchoring and digging machine cuts, the distance of the beveled portion of the mining face of the tunnel along the extension direction of the tunnel is less than the distance between the bevel cutting position and the cut hole along the extension direction of the tunnel; The excavation direction of the anchoring and digging machine is repeatedly adjusted, and each time the cutting tool is cut into the mining face of the tunnel in an extreme oblique cutting manner, until the anchoring and digging machine excavates into the cut eye again, and the excavation direction of the anchoring and digging machine is consistent with the extension direction of the cut eye.

2. The tunnel turning construction method of the anchoring and digging machine according to claim 1 is characterized in that: The distances of the parts of the mining face of the tunnel that are beveled by the anchor-mining machine each time along the extending direction of the tunnel are the same.

3. The tunnel turning construction method of the anchor-digger integrated machine according to claim 1, characterized in that: During the process of the mining and anchoring machine making multiple extreme oblique cuts into the mining face of the tunnel, the angle between the excavation direction of the mining and anchoring machine and the extension direction of the tunnel gradually increases until the angle is the same as the angle between the extension direction of the tunnel and the extension direction of the cutting eye.

4. The tunnel turning construction method of the anchor-digger integrated machine according to claim 3 is characterized in that: After the integrated miner and anchor machine retreats to the bevel cutting position, the cutting drum is retracted and the excavation direction of the integrated miner and anchor machine is adjusted so that the rear end of the vehicle body abuts against the side wall opposite to the mining face of the tunnel, and the outer edge of the front end face of the cutting drum abuts against the mining face of the tunnel.

5. The tunnel turning construction method of the anchor-digger integrated machine according to claim 4, characterized in that: Each time the excavation direction of the anchor miner is adjusted, the rear end of the vehicle body is abutted against the side wall of the tunnel face and the outer edge of the front end face of the cutting drum is always abutted against the side wall of the tunnel face.

6. The tunnel turning construction method of the anchor-digger integrated machine according to claim 5, characterized in that: When the anchor-mining machine cuts into the side wall of the tunnel with an extreme oblique cut, the cutting drum is always in a cutting operation state.

7. The tunnel turning construction method of the anchor-digger integrated machine according to claim 1, characterized in that: The area cut by the integrated miner and anchorer after multiple extreme bevel cuts on the mining face of the tunnel is an expanded wall area, and the projection of the wall of the expanded wall area on the tunnel floor is a broken line.

8. The tunnel turning construction method of the anchor-digger integrated machine according to claim 7, characterized in that: With the mining face of the laneway as the x-axis and the mining face of the cut as the y-axis, the coordinates of the endpoints on the broken line are located at y=8.272×10 -13 x 4 +2.569×10 -8 x 3 +3.055×10 -4 x 2 On the curve of +1.93x+6442.

9. The tunnel turning construction method of the anchor-digger integrated machine according to claim 1, characterized in that: After the integrated digging and anchoring machine excavates to the cut eye for the first time, when the integrated digging and anchoring machine excavates to the side wall opposite to the mining face side of the cut eye, the integrated digging and anchoring machine stops excavating.

10. The tunnel turning construction method of the anchor-digger integrated machine according to claim 9, characterized in that: After the integrated miner and anchor machine advances to the cut eye again, the integrated miner and anchor machine retreats, the cutting drum extends, and the integrated miner and anchor machine cuts the remaining coal pillars in the cut eye.

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