CN113482635A - Parallel construction method for installing and expanding cutting brush based on stack type support reinforced long-span top plate - Google Patents
Parallel construction method for installing and expanding cutting brush based on stack type support reinforced long-span top plate Download PDFInfo
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- CN113482635A CN113482635A CN202110771438.XA CN202110771438A CN113482635A CN 113482635 A CN113482635 A CN 113482635A CN 202110771438 A CN202110771438 A CN 202110771438A CN 113482635 A CN113482635 A CN 113482635A
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- 238000010276 construction Methods 0.000 title claims abstract description 42
- 238000009434 installation Methods 0.000 claims abstract description 41
- 230000005641 tunneling Effects 0.000 claims abstract description 24
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 12
- 239000003245 coal Substances 0.000 claims abstract description 9
- 238000005065 mining Methods 0.000 claims description 34
- 230000001680 brushing effect Effects 0.000 claims description 25
- 230000002787 reinforcement Effects 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 238000005553 drilling Methods 0.000 description 3
- 238000011900 installation process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/01—Methods or apparatus for enlarging or restoring the cross-section of tunnels, e.g. by restoring the floor to its original level
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
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Abstract
The invention discloses a parallel construction method for installing a hole-cutting brush expansion based on a stack type support reinforced long-span top plate, and belongs to the technical field of coal mine electromechanical equipment installation. After the pilot tunnel hole cutting construction is completed and before a tunneling brush is used for large hole cutting, a stack type support supporting top plate is installed in advance from a machine roadway along the large side of the pilot tunnel hole cutting brush, the stack type support is used for reinforcing the top plate, meanwhile, span reduction is carried out on the large-span hole cutting after the large hole cutting is brushed, then the large hole cutting is tunneled and brushed along the stack type support in the same direction of the stack type support installation, the tunneling operation is carried out in parallel with the advance stack type support installation until the air roadway is reached, and finally, the stack type support supporting in the area where the large hole cutting construction is completed is dismantled and a fully mechanized hydraulic support is installed. The method adopts the stack type support to support the large-span top plate for cutting the holes, improves the safety of the large-span top plate for cutting the holes, and leads the hole cutting brush expansion and the installation operation to be carried out synchronously, thereby quickening the efficiency of forming the holes.
Description
Technical Field
The invention relates to a parallel construction method for reaming brush expanding installation, in particular to a parallel construction method for reaming brush expanding installation based on a long-span top plate reinforced by a stack type support, which is suitable for supporting and installing a coal mine top plate.
Background
Compared with a roadway, the cutting hole has large section span, so that the problems of roof falling, left and right side extrusion, bottom plate bulging and the like are easily caused, the cutting hole needs to be repaired for many times during service, and the normal production of a coal mine, the normal work of underground equipment and the safety of workers are influenced. At present, the construction process of the hole cutting of the fully mechanized mining face of the coal mine is generally construction by a secondary tunneling method, namely, a pilot tunnel hole cutting is firstly excavated, and then the pilot tunnel hole cutting is brushed and expanded to the designed width. In order to ensure the stability of the top plate during the hole cutting construction, a large number of single pillars are usually added for reinforcement and reinforcement, the ordinary maintenance of the single pillars and the withdrawal after the support mounting all cause the increase of the workload and the labor intensity of personnel, and the potential safety hazard during the erection and the withdrawal of the single pillars is large.
At present, the installation process level of the underground fully mechanized coal mining face of the coal mine in China is not high, and the technical development is slow. The process of the eye-cutting brush expansion by taking the single prop as a temporary support also has the phenomenon of large eye-cutting brush and cross operation of installation, and influences the large single-entry level of the brush and the installation progress.
Therefore, how to reduce the use of the single prop and realize the safe and efficient support of the large-span incision has important significance for the stability of the incision and the smooth extraction of a working face. Meanwhile, in order to improve the labor efficiency and save the time cost and improve the current fully mechanized mining face hole cutting brush size and the installation process level, a hole cutting brush expanding process for replacing temporary support of a single support is in urgent need.
Disclosure of Invention
Aiming at the defects of the prior art, the parallel construction method for installing the large-span top plate by the aid of the stack type support reinforcing type hole cutting brush is provided, safety of the large-span hole cutting top plate is improved, and hole cutting forming efficiency is accelerated through parallel construction.
In order to achieve the technical purpose, the invention discloses a parallel construction method for enlarging and installing a cutting brush based on a stack type support reinforced long-span top plate.
The method comprises the following specific steps:
s1: determining a pilot tunnel hole cutting range between a machine tunnel and an air tunnel according to the geological conditions of a working face, then selecting a proper stack type support according to the condition of a pilot tunnel hole cutting top plate, and confirming the support spacing of the stack type support;
s2: before the operation of eye-cutting brush expansion and installation is started, a monorail crane for transportation is installed in the air way and the pilot tunnel eye, the track of the monorail crane is arranged on the top plate, and the top plate is reinforced by using a top plate reinforcing scheme;
s3: a plurality of stack type supports are arranged at intervals in advance along the large side of the pilot tunnel hole cutting brush from the machine lane, and a pilot tunnel hole cutting top plate is supported through the stack type supports;
s4: brushing large cut holes for tunneling along the stack type support from a machine lane by using the fully mechanized excavating machine along the arrangement of the stack type support, always ensuring that tunneling operation is within a reinforcing and reinforcing range of a top plate of the stack type support, and always brushing the large cut holes in advance for ensuring top plate support;
s5: and finally, dismantling the stack type support of the large-brush hole-cutting construction completed area by using a monorail crane and conveying the stack type support into a fully-mechanized mining hydraulic support for installation.
Further, the specific steps of mounting the stack type support in advance are as follows: firstly, a single-track crane is used for conveying the stack type support into the cutting hole, then the stack type support is arranged close to the coal wall along the large side of the pilot tunnel cutting brush, and finally the stack type support is connected with a solid top plate to complete top plate supporting.
Further, the pile support mounting advance brush large-cut-hole tunneling head is not smaller than 10m so as to ensure that the brush large-cut-hole tunneling operation is always carried out under the reinforcement and the reinforcement of the top plate, the brush large-cut-hole tunneling is carried out from a machine tunnel to a wind tunnel, and the brush large-cut-hole tunneling operation and the advance pile support mounting parallel operation.
Further, after a space enough for installing the fully-mechanized mining hydraulic support is excavated by brushing the large cutting hole, the fully-mechanized mining hydraulic support is installed on the working face of brushing the large cutting hole by utilizing a monorail crane; firstly, mounting two end supports of a machine lane in place, and then sequentially mounting fully-mechanized mining hydraulic supports towards an air lane by the machine lane; the stack type support is gradually detached from a safe position behind the brush large-cut-hole tunneling head-on to provide an installation space for the fully-mechanized mining hydraulic support, the detached stack type support is integrally transported to an advanced stack type support installation position in front of the brush large-cut-hole tunneling head-on by a single-rail crane to be recycled or integrally transported out, the fully-mechanized mining hydraulic support is transported in by the single-rail crane and is installed next to the last fully-mechanized mining hydraulic support, and the operation is circulated until the cut-hole brush expansion installation is completed.
Further, the construction of dismantling and installing the fully-mechanized mining hydraulic support by the support of the brushing large-hole-cutting construction completion area is carried out after the whole brushing large-hole-cutting construction is completed, or the construction is carried out along with the pushing of the brushing large-hole-cutting, and along with the installation of the fully-mechanized mining hydraulic support on the working face, the monorail crane covering the top plate of the fully-mechanized mining hydraulic support on the working face is dismantled, and the dismantled accessories are transported away by the monorail crane.
Has the advantages that:
the method uses the stack type support to reinforce the top plate, so that the safety of large-span hole cutting is improved. According to the construction method, the stack type support is installed to support the large-span cut-hole top plate, and the span reduction effect improves the safety coefficient of the top plate.
The support installation is carried out simultaneously, the brushing large-cutting-hole tunneling work is carried out synchronously, due to the fact that the stack type support is arranged in the middle of a roadway for shielding and separating, equipment transportation and installation in the pilot tunnel cutting hole and brushing large-cutting-hole tunneling work are not affected mutually, brushing expansion installation parallel work achieves continuous brushing expansion of the fully-mechanized excavating machine, brushing expansion efficiency is improved, and large-span cutting-hole brushing expansion installation parallel work is achieved.
The stack type support replaces the traditional single canopy, the expansion of the working face is realized without single bodies, the stack type support replaces the single canopy, the roof support strength is enhanced, the safety coefficient is improved, the workload is reduced, the labor intensity of workers is reduced, and the cost generated by the single canopy is saved.
Drawings
FIG. 1 is a schematic diagram of a parallel construction method for installing a hole-cutting brush-expanding device based on a stack type support to reinforce a large-span top plate.
In the figure: 1. a stack type support, 2, a fully-mechanized mining hydraulic support, 3, a fully-mechanized excavating machine, 4, a pilot tunnel cutting hole, 5, a brush large cutting hole, 6, a monorail crane
Detailed Description
Embodiments of the invention are further described below with reference to the accompanying drawings:
as shown in FIG. 1, the parallel construction method for the reaming, brushing and expanding installation of the reinforced long-span top plate based on the buttress type support 1 is characterized in that: after the construction of the pilot tunnel cutting hole 4 is completed and before a large cutting hole 5 is tunneled and brushed, firstly, a stack type support 1 supporting top plate is installed in advance from a machine roadway along the large side of the pilot tunnel cutting hole 4 in a brushing mode, the top plate is reinforced by using the stack type support 1, meanwhile, the span reduction is carried out on the large-span cutting hole after the large cutting hole is brushed, then the large cutting hole 5 is tunneled and brushed along the stack type support 1 in the same direction of the installation of the stack type support 1, the large cutting hole 5 is brushed and the stack type support 1 is advanced to be installed in parallel until the air roadway, and finally, the stack type support 1 supporting in the area where the large cutting hole 5 is brushed is constructed is dismantled and a fully-mechanized hydraulic support 2 is installed.
The method comprises the following specific steps:
s1: determining the range of a pilot tunnel cut hole 4 between a machine tunnel and an air tunnel according to the geological conditions of a working face, then selecting a proper stack type support 1 according to the top plate condition of the pilot tunnel cut hole 4 and confirming the supporting distance of the stack type support 1; the method for mounting the stack type support 1 in advance comprises the following specific steps: firstly, a single-rail crane 6 is used for conveying the stack support 1 into a cutting hole, then the large side of the brush is arranged close to a coal wall along a pilot tunnel cutting hole 4, and finally the stack support 1 is connected with a solid top plate to complete top plate support;
s2: before the drilling brush expansion and installation operation is started, a monorail crane 6 for transportation is installed in the air way and the pilot tunnel drilling 4, the track of the monorail crane 6 is arranged on the top plate, and the top plate is reinforced by using a top plate reinforcing scheme;
s3: a plurality of stacking supports 1 are arranged at intervals in advance along the large side of the brush of the pilot tunnel cutting hole 4 from the machine lane, and a top plate of the pilot tunnel cutting hole 4 is supported through the stacking supports 1; the stack type support 1 is provided with an advancing brush big cutting hole 5, and the tunneling head is not less than 10 m;
s4: then, brushing large cutting holes 5 for tunneling along the stack type support 1 from a machine lane by using the fully mechanized excavating machine 3 along with the arrangement of the stack type support 1, and always ensuring that the tunneling operation is within the reinforcing and reinforcing range of the top plate of the stack type support 1, and arranging the stack type support 1 to always brush the large cutting holes 5 in advance so as to ensure the top plate support;
s5: finally, a single-rail crane 6 is used for dismantling the support of the stack type support 1 in the area where the large cutting holes 5 are brushed and constructed and transporting the support into the fully-mechanized mining hydraulic support 2 for installation; after a space enough for installing the fully mechanized mining hydraulic support 2 is excavated in the large brush cutting hole 5, the fully mechanized mining hydraulic support 2 is installed on the working surface of the large brush cutting hole 5 by using the monorail crane 6; firstly, mounting two end supports of a machine lane in place, and then sequentially mounting fully-mechanized mining hydraulic supports 2 towards an air lane by the machine lane; the stack type support 1 is gradually detached from a safe position behind the tunneling head of the large-scale cutting hole 5 to provide an installation space for the fully-mechanized mining hydraulic support 2, the detached stack type support 1 is integrally transported to an installation position of the advanced stack type support 1 in front of the tunneling head of the large-scale cutting hole 5 by a monorail crane 6 to be recycled or integrally transported out, the fully-mechanized mining hydraulic support 2 is integrally transported in by the monorail crane 6 and is installed next to the previous fully-mechanized mining hydraulic support 2, and the operation is circulated until the drilling brush is completely installed.
The construction of the support removal and installation of the fully mechanized mining hydraulic support 2 of the stack type support 1 in the construction completion area of the brush large cutting hole 5 is carried out after the construction of the whole brush large cutting hole 5 is completed, or the construction is carried out along with the propulsion of the brush large cutting hole 5 and the installation of the fully mechanized mining hydraulic support 2 on the working face, the monorail crane 6 covering the top plate of the fully mechanized mining hydraulic support 2 on the working face is detached at the same time, and detached accessories are transported away by the monorail crane 6.
Claims (6)
1. A parallel construction method for installing a large-span top plate through a cutting brush based on stack type support reinforcement is characterized in that: after the pilot tunnel hole cutting construction is completed and before a tunneling brush is used for large hole cutting, a stack type support supporting top plate is installed in advance from a machine roadway along the large side of the pilot tunnel hole cutting brush, the stack type support is used for reinforcing the top plate, meanwhile, span reduction is carried out on the large-span hole cutting after the large hole cutting is brushed, then the large hole cutting is tunneled and brushed along the stack type support in the same direction of the stack type support installation, the tunneling operation is carried out in parallel with the advance stack type support installation until the air roadway is reached, and finally, the stack type support supporting in the area where the large hole cutting construction is completed is dismantled and a fully mechanized hydraulic support is installed.
2. The parallel construction method for the cutting, brushing and expanding installation of the long-span top plate reinforced by the stack type support according to claim 1 is characterized by comprising the following specific steps:
s1: determining a pilot tunnel hole cutting range between a machine tunnel and an air tunnel according to the geological conditions of a working face, then selecting a proper stack type support according to the condition of a pilot tunnel hole cutting top plate, and confirming the support spacing of the stack type support;
s2: before the operation of eye-cutting brush expansion and installation is started, a monorail crane for transportation is installed in the air way and the pilot tunnel eye, the track of the monorail crane is arranged on the top plate, and the top plate is reinforced by using a top plate reinforcing scheme;
s3: a plurality of stack type supports are arranged at intervals in advance along the large side of the pilot tunnel hole cutting brush from the machine lane, and a pilot tunnel hole cutting top plate is supported through the stack type supports;
s4: brushing large cut holes for tunneling along the stack type support from a machine lane by using the fully mechanized excavating machine along the arrangement of the stack type support, always ensuring that tunneling operation is within a reinforcing and reinforcing range of a top plate of the stack type support, and always brushing the large cut holes in advance for ensuring top plate support;
s5: and finally, dismantling the stack type support of the large-brush hole-cutting construction completed area by using a monorail crane and conveying the stack type support into a fully-mechanized mining hydraulic support for installation.
3. The parallel construction method for the cutting, brushing and expanding installation of the long-span top plate reinforced by the buttress support according to claim 2, wherein the concrete steps of mounting the buttress support in advance are as follows: firstly, a single-track crane is used for conveying the stack type support into the cutting hole, then the stack type support is arranged close to the coal wall along the large side of the pilot tunnel cutting brush, and finally the stack type support is connected with a solid top plate to complete top plate supporting.
4. The stack support reinforced long-span roof-based cut-and-brush installation parallel construction method according to claim 2, wherein the stack support installation advance brush large cut-and-tunnel heading is not less than 10m so as to ensure that the brush large cut-and-tunnel heading operation is always performed under roof reinforcement, the brush large cut-and-tunnel heading is performed from a machine tunnel to a wind tunnel, and the brush large cut-and-tunnel heading operation is parallel to the advance stack support installation.
5. The parallel construction method for the installation and the reaming and brushing of the long-span top plate reinforced by the buttress support according to claim 2, wherein the parallel construction method comprises the following steps: after a space enough for installing the fully-mechanized mining hydraulic support is excavated by the large-brush cutting hole, the fully-mechanized mining hydraulic support is hung on a working surface for installing the large-brush cutting hole by a single rail; firstly, mounting two end supports of a machine lane in place, and then sequentially mounting fully-mechanized mining hydraulic supports towards an air lane by the machine lane; the stack type support is gradually detached from a safe position behind the brush large-cut-hole tunneling head-on to provide an installation space for the fully-mechanized mining hydraulic support, the detached stack type support is integrally transported to an advanced stack type support installation position in front of the brush large-cut-hole tunneling head-on by a single-rail crane to be recycled or integrally transported out, the fully-mechanized mining hydraulic support is transported in by the single-rail crane and is installed next to the last fully-mechanized mining hydraulic support, and the operation is circulated until the cut-hole brush expansion installation is completed.
6. The parallel construction method for the installation and the reaming and brushing of the long-span top plate reinforced by the buttress support according to claim 2, wherein the parallel construction method comprises the following steps: and (3) carrying out construction such as the construction of dismantling and installing the fully-mechanized mining hydraulic support by the stack support in the brushing large-cutting-hole construction completion area after the whole brushing large-cutting-hole construction is completed, or carrying out the construction along with the advancement of the brushing large-cutting-hole, and simultaneously dismantling the monorail crane covering the top plate of the fully-mechanized mining hydraulic support on the working surface along with the installation of the fully-mechanized mining hydraulic support on the working surface, and carrying away the dismantled accessories by using the monorail crane.
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| CN202110771438.XA CN113482635A (en) | 2021-07-08 | 2021-07-08 | Parallel construction method for installing and expanding cutting brush based on stack type support reinforced long-span top plate |
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| CN202110771438.XA CN113482635A (en) | 2021-07-08 | 2021-07-08 | Parallel construction method for installing and expanding cutting brush based on stack type support reinforced long-span top plate |
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