CN111691883A - Full-rope sawing cave mining construction method - Google Patents
Full-rope sawing cave mining construction method Download PDFInfo
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- CN111691883A CN111691883A CN202010404370.7A CN202010404370A CN111691883A CN 111691883 A CN111691883 A CN 111691883A CN 202010404370 A CN202010404370 A CN 202010404370A CN 111691883 A CN111691883 A CN 111691883A
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- 238000010276 construction Methods 0.000 title claims abstract description 46
- 238000005065 mining Methods 0.000 title claims abstract description 38
- 238000005520 cutting process Methods 0.000 claims abstract description 233
- 238000005553 drilling Methods 0.000 claims abstract description 72
- 239000002994 raw material Substances 0.000 claims abstract description 54
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 23
- 238000007667 floating Methods 0.000 claims description 22
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 13
- 239000004575 stone Substances 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 229910003460 diamond Inorganic materials 0.000 description 7
- 239000010432 diamond Substances 0.000 description 7
- 239000004579 marble Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 230000011218 segmentation Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/16—Machines slitting solely by one or more rotating saws, cutting discs, or wheels
- E21C25/18—Saws; Discs; Wheels
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/56—Slitting by cutter cables or cutter chains or by tools drawn along the working face by cables or the like, in each case guided parallel to the face, e.g. by a conveyor or by a guide parallel to a conveyor
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Abstract
The invention provides a full rope saw underground mining construction method, wherein a left pilot tunnel is arranged on the first side of a main rough material on a tunnel face; arranging a right guide hole on the second side of the main raw material; mining a left pilot tunnel, and forming a first side operation surface of the main raw material on the left pilot tunnel; mining a right pilot tunnel, and forming a second side operation surface of the main raw material at the right side pilot tunnel; drilling and positioning at a preset position of the tunnel face of the main raw material; and (3) cutting the main raw material block by using a large rope saw, and cutting the main raw material block. Realize that the cutting gap is little, cut the back of accomplishing to the side of main barren material moreover, taking out, be difficult for causing the waste to the barren material to be difficult for causing square stock self fracture to produce extravagant and take place to press from both sides the condition of dying cutting board easily. The full-rope saw underground mining construction method provided by the invention is used for carrying out underground mining on stone rough materials, and an environment-friendly, safe, efficient and economic underground mining construction process is realized.
Description
Technical Field
The invention relates to the field of stone exploitation, in particular to a full-rope sawing cave exploitation construction method.
Background
At present, stone mining is basically open-pit mining, blasting is adopted to strip ore covering layer earthwork, then stone is mined, earth surface vegetation and ecological environment are seriously damaged, social development is influenced, extensive open-pit mining is stopped and eliminated along with the coming of national environmental governance policies, underground mining is gradually developed, some marble mines in China begin to use Italian chain arm saws to cut and mine marble rough materials in chambers, but imported equipment is expensive, key technologies are difficult to master, maintenance cost is high, time is long, on the other hand, diamond composite sheets are selected as cutting tool bits by the chain arm saws, cutting efficiency of stones with the hardness of more than 5 levels is extremely low, hard granite stones cannot be cut, and restriction on development of marble cave mining is brought.
Further, at present, the marble cave is adopted and mainly adopts the chain arm saw as main construction machinery, and the square stock is cut all around earlier and is accomplished, cuts the square stock back at last, and its construction is main shortcoming: the square stock size generally is 2.7m deep, wide 1.8m, high 1.8m, and the degree of depth direction size is big after the cutting, only has the back to connect length of encorbelmenting to reach after the four sides cutting, easily causes the condition that square stock self fracture produced extravagant and take place to press from both sides the dead cutting board easily.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a full-rope sawing cave mining construction method, which comprises the following steps:
step one, arranging a left pilot tunnel on a first side of a main raw material on a tunnel face;
step two, arranging a right pilot tunnel on the second side of the main raw material;
mining a left pilot tunnel, and forming a first side operation surface of the main raw material on the left pilot tunnel;
fourthly, mining a right side pilot tunnel, and forming a second side operation surface of the main raw material at the right side pilot tunnel;
fifthly, drilling and positioning at a preset position of the tunnel face of the main raw material;
and step six, cutting the main raw material block by blocks by using a large rope saw, and cutting the main raw material block.
It should be further noted that the second step further includes:
drilling and positioning the tunnel face and positioning and paying off the cutting line;
the drilling machine positions according to the hole position paying-off of the tunnel face, adjusts the position of the drilling machine and prepares for drilling construction;
drilling according to the drilling position positioned by the left pilot tunnel;
after the drilling of the left pilot hole is finished, moving the drilling machine to the right pilot hole;
drilling according to the drilling position positioned by the right pilot tunnel;
after drilling construction of the right pilot tunnel is finished, moving the drilling machine to the main raw material;
and drilling according to the drilling position positioned by the main raw material.
It should be further noted that the first step further includes:
and splitting and cutting the left pilot tunnel.
It should be further noted that the second step further includes:
and splitting and cutting the right pilot tunnel.
It should be further noted that step three further includes:
inserting the hole bottom reverse cutting device into two adjacent drill holes of the first cutting block of the left pilot hole to cut;
after cutting, taking out the hole bottom reverse cutting device;
then inserting the cutting block into the other two adjacent drill holes of the first cutting block of the left pilot hole for cutting;
after cutting, taking out the first cutting block of the left pilot hole;
and by analogy, completing the cutting in sequence and taking out the rest split cutting blocks.
It should be further noted that, step four further includes:
inserting the hole bottom reverse cutting device into two adjacent drill holes of the first cutting block of the right pilot hole to cut;
after cutting, taking out the hole bottom reverse cutting device;
then inserting the cutting block into the other two adjacent drill holes of the first cutting block of the right pilot hole for cutting;
after cutting, taking out the first cutting block of the right pilot hole;
and by analogy, completing the cutting in sequence and taking out the rest split cutting blocks.
It should be further noted that the second step further includes:
dividing the main raw material into two parts from the central line of the main raw material;
drilling two intersection points of the central line of the main raw material and the upper and lower end surfaces of the main raw material;
cutting a first side surface of a central line of the main raw material;
inserting the hole bottom reverse cutting device into two adjacent drill holes on the first side surface of the central line of the main raw material to cut;
after cutting, taking out the hole bottom reverse cutting device;
then inserting the main raw material into the other two adjacent drill holes on the first side surface of the central line of the main raw material for cutting;
after cutting, taking out the cutting block on the first side surface of the central line of the main raw material;
and by analogy, cutting is finished, and the cutting block on the second side surface of the central line of the main raw material is taken out.
It is further noted that the method employs a hole bottom reverse cutting apparatus comprising: a cutting machine and two hole inner support reverse cutting mechanisms;
the inner support reverse cutting mechanisms in the two holes respectively extend into preset drilled holes;
the cutting rope extends out of the cutting machine, bypasses the hole outer guide wheel assembly supporting the reverse cutting mechanism in the first hole, sequentially passes through the second bearing assembly, the reverse cutting main rod and the first bearing assembly, then bypasses the hole bottom guide wheel assembly, extends into the second hole to support the hole bottom guide wheel assembly supporting the reverse cutting mechanism, bypasses the hole bottom guide wheel assembly, sequentially passes through the first bearing assembly, the reverse cutting main rod and the second bearing assembly, and is connected to the cutting machine through the hole outer guide wheel assembly.
It should be further noted that the supporting undercut mechanism in the hole comprises: an oil cylinder and a fixed bracket;
the fixed support extends into the drill hole and is connected with the hole wall, and the fixed support is connected with a floating support in a matching way through an oil cylinder;
a movable gap is arranged between the fixed bracket and the floating bracket;
the fixed bracket is provided with a reverse cutting main rod, and the oil cylinder is connected with the reverse cutting main rod;
the first end of the reverse cutting main rod is connected with a first bearing assembly;
the first bearing assembly is rotatably connected with the hole bottom guide wheel assembly;
the second end of the reverse cutting main rod is connected with a second bearing assembly;
the second bearing assembly is rotatably connected with the outer guide wheel assembly with the hole;
the fixed support is provided with an arc-shaped supporting plate connected with the inner wall of the drill hole, and the arc-shaped supporting plate is provided with a cross brace and two vertical braces;
the first ends of the two vertical supports are respectively connected with the arc-shaped supporting plate;
two ends of the cross brace are respectively connected with the arc-shaped supporting plate and penetrate through the two vertical braces;
the reverse cutting main rod is arranged in a gap between the arc-shaped supporting plate and the two vertical supports;
the floating support is provided with an inclined support which is connected with the inner wall of the drill hole;
the inclined strut bracket is connected with a floating pin;
the floating pins and the two vertical supports are arranged in a staggered manner;
the fixed end of the oil cylinder is connected with the arc-shaped supporting plate; the movable end of the oil cylinder is connected with the inclined strut bracket.
The first bearing assembly is provided with a first bearing inner sleeve, and the first end of the first bearing inner sleeve is connected with the reverse cutting main rod through threads; a first bearing and a bearing spacer ring are sleeved outside the second end of the first bearing inner sleeve, and a bearing outer sleeve is sleeved on the first bearing;
a first positioning screw hole is arranged on the bearing outer sleeve and connected with a first positioning bolt
Bearing snap rings are respectively arranged between the first bearing and the first bearing inner sleeve and between the bearing outer sleeve and the first bearing;
a first end cover is welded on the end face of the bearing outer sleeve;
the hole bottom guide wheel component is provided with a hole bottom wheel bracket and a hole bottom wheel;
one end of the hole bottom wheel bracket is connected with the bearing outer sleeve, and the other end of the hole bottom wheel bracket is connected with a central shaft of the hole bottom wheel;
a hole bottom wheel groove is formed in the hole bottom wheel;
a protective cover is covered on the outer side of the hole bottom wheel;
the second bearing assembly is provided with a second bearing inner sleeve, and the first end of the second bearing inner sleeve is connected with the reverse cutting main rod through threads; the second bearing is sleeved outside the second end of the second bearing inner sleeve;
a second positioning screw hole is formed in the second bearing, and a positioning groove matched with the second positioning screw hole is formed in the inner sleeve of the second bearing;
the second positioning screw hole is in threaded connection with a second positioning bolt, and the second positioning bolt extends into the positioning groove;
a second end cover is welded on the end face of the second bearing;
the hole outer guide wheel component is provided with a hole outer wheel bracket and a hole outer wheel;
one end of the hole outer wheel bracket is connected with the second bearing, and the other end of the hole outer wheel bracket is connected with a central shaft of the hole outer wheel;
the hole outer wheel is provided with an outer wheel groove.
According to the technical scheme, the invention has the following advantages:
by adopting the full-rope saw underground mining construction method, the left pilot tunnel and the right pilot tunnel are operated before the main rough block is cut, and the meeting working surfaces are formed, so that the cutting operation is convenient. Before cutting, drilling and positioning the tunnel face and positioning and paying off the cutting line; the drilling machine positions according to the hole position paying-off of the tunnel face, adjusts the position of the drilling machine and conducts drilling construction; after drilling is accomplished, arranging of hole bottom reverse cutting device, cutting is carried out, and it is little to realize cutting the gap, cuts the side of main barren material moreover and accomplishes the back, taking out, is difficult for causing the waste to the barren material to be difficult for causing square stock self fracture to produce extravagant and take place easily to press from both sides the condition of dying the cutting board. The full-rope saw underground mining construction method provided by the invention is used for carrying out underground mining on stone rough materials, and an environment-friendly, safe, efficient and economic underground mining construction process is realized.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a flow chart of a construction method of a full-rope sawing cave mining;
FIG. 2 is a view of a palm surface block and a hole site;
FIG. 3 is a block cutting flowchart of the left pilot tunnel;
FIG. 4 is a flow chart of the main block cutting construction;
FIG. 5 is a schematic view of the main block division;
FIG. 6 is a schematic view of a hole bottom reverse cutting apparatus;
FIG. 7 is a schematic view of an embodiment of a hole bottom reverse cutting apparatus;
FIG. 8 is a schematic view of an embodiment of a hole bottom reverse cutting apparatus.
Detailed Description
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the description in this document. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The invention provides a full-rope sawing cave mining construction method, as shown in figure 1, the method comprises the following steps:
s11, arranging a left pilot tunnel on the first side of the main raw material on the tunnel face;
and splitting and cutting the left pilot tunnel.
S12, arranging a right pilot tunnel on the second side of the main raw material;
and splitting and cutting the right pilot tunnel.
Wherein, the face is drilled and positioned and the cutting line is positioned and paid off;
the drilling machine positions according to the hole position paying-off of the tunnel face, adjusts the position of the drilling machine and prepares for drilling construction;
drilling according to the drilling position positioned by the left pilot tunnel;
after the drilling of the left pilot hole is finished, moving the drilling machine to the right pilot hole;
drilling according to the drilling position positioned by the right pilot tunnel;
after drilling construction of the right pilot tunnel is finished, moving the drilling machine to the main raw material;
and drilling according to the drilling position positioned by the main raw material.
S13, mining the left pilot tunnel, and forming a first side operation surface of the main raw material on the left pilot tunnel;
s14, mining a right side pilot tunnel, and forming a second side operation surface of the main raw material at the right side pilot tunnel;
s15, drilling and positioning at a preset position of the tunnel face of the main raw material;
and S16, cutting the main raw material block by using a large rope saw, and cutting the main raw material block.
In order to further explain the construction process of the full-rope saw underground mining, a specific implementation mode is described below. As shown in fig. 2, a palm side block and hole bitmap. The left pilot hole is divided into 3 cutting blocks. The right pilot hole was divided into 3 cutting blocks. The main block is divided into 6 cutting blocks.
Firstly, pilot hole cutting construction. Drilling holes on the tunnel face, positioning cutting lines and paying off. The drilling machine is positioned according to the hole position paying-off of the tunnel face and is adjusted along the depth direction of the tunnel face; finally, drilling is carried out, preferably with a drilling depth of 2.2 m. And after the left pilot hole is drilled, moving the drilling machine to the right pilot hole. And after the pilot tunnel drilling construction is finished, moving the drilling machine to the main block, and drilling the main block.
The left pilot hole block cutting mode is shown in fig. 3.
And (3) carrying out pilot tunnel partitioning cutting by adopting a large rope saw:
a. and (3) inserting a hole bottom reverse cutting device into two drilled holes on the bottom surface of the No. 1 block, and cutting the top surface of the wedge, wherein the cutting depth is preferably 1.8 m.
b. And (3) inserting a hole bottom reverse cutting device into the two drilled holes on the top surface of the No. 2 block, and cutting the bottom surface of the wedge, wherein the cutting depth is preferably 1.8 m.
c. The wedge is broken and taken out, and the section steel is inserted between the No. 1 and No. 2 blocks.
d. And moving the large-scale rope saw to the left pilot tunnel, inserting a hole bottom reverse cutting device into the left drilling hole on the top surface of the No. 1 block and the left drilling hole on the bottom surface of the No. 3 block, and cutting the left sides of the No. 1, 2 and 3 blocks.
e. And inserting a hole bottom reverse cutting device into the top right drilling hole of the No. 1 block and the bottom right drilling hole of the No. 3 block, and cutting the right side of the No. 1, 2 and 3 blocks, wherein the cutting depth is preferably 1.8 m.
f. And (4) inserting the hole bottom reverse cutting device into two drilled holes on the top surface of the No. 1 block, and cutting the top surface of the No. 1 block.
g. And (4) inserting the hole bottom reverse cutting device into two drilled holes on the bottom surface of the No. 2 block, and cutting the back surface of the No. 1 block.
h. The block number 1 is taken out.
i. And (4) inserting the hole bottom reverse cutting device into two drilled holes on the bottom surface of the No. 2 block, and cutting the bottom surface of the No. 2 block.
j. And (4) inserting the hole bottom reverse cutting device into two drilled holes on the bottom surface of the No. 3 block, and cutting the bottom surface of the No. 3 block.
k. And (4) placing the back cutting device at the position of the No. 1 block, and carrying out No. 2 and No. 3 block back cutting.
And l, after cutting, taking out the No. 2 and No. 3 blocks, and finishing construction of the left pilot tunnel.
The construction steps of the rope saw back cutting of the right side pilot tunnel are the same as the construction method of the left side pilot tunnel, and the construction steps are not repeated.
The main rough block cutting construction mode related to the embodiment specifically comprises the following steps as shown in fig. 4 and 5:
adopting a large rope saw to cut the main rough material into blocks:
a. adjusting the position of the drilling machine, and drilling the main rough material (the drilling depth is 2.1m)
b. And installing the rope-threading hole drilling machine in place, carrying out the rope-threading hole construction on the top surfaces of No. 7 and No. 8 blocks, and carrying out the rope-threading hole construction on the top surfaces of No. 9 and No. 10 blocks and No. 11 and No. 12 blocks in the same way.
c. And inserting the reverse cutting rod into the two drill holes in the center of the main raw material, and performing cutting construction and left and right two-row segmentation.
d. And performing forward cutting on the bottom surfaces of the No. 7 and No. 8 blocks.
e. And (5) carrying out top surface positive cutting on No. 7 and No. 8 blocks.
f. And carrying out back cutting on the No. 7 and No. 8 blocks.
g.7, block 8.
h. And performing forward cutting on the bottom surfaces of the No. 9 and No. 10 blocks.
i. And carrying out back cutting on the 9 and 10 blocks.
And taking the block from the block number j.9 and 10.
k. And reverse cutting of the bottom surfaces of the No. 10 and No. 11 blocks is carried out.
And l, carrying out back cutting on the No. 10 and No. 11 blocks.
And taking blocks from the m.10 and 11 blocks.
When the cutting is carried out based on the method, the yield of the square stock is high and can reach 60%, and the yield of the chain arm saw construction square stock is only 30%. The energy consumption is low, and the power consumption of the construction of the full-rope saw method is 22 degrees/m3The power consumption of chain arm saw method construction is 44 degrees/m3The energy consumption for mining the stone in the same space is 1/2 of chain arm saw.
The hole bottom reverse cutting device used in the method, as shown in fig. 6 to 8, comprises: a cutter 21 and two hole internal support reverse cutting mechanisms 22;
the internal support reverse cutting mechanisms 22 in the two holes respectively extend into the preset drilled holes 33; the cutting rope 38 extends from the cutting machine 21, passes around the hole outside guide wheel assembly supporting the reverse cutting mechanism in the first hole, passes through the second bearing assembly 37, the reverse cutting main rod 35 and the first bearing assembly 36 in sequence, passes around the hole bottom guide wheel assembly, extends to the hole bottom guide wheel assembly supporting the reverse cutting mechanism in the second hole, passes through the hole bottom guide wheel assembly in sequence, passes through the first bearing assembly 36, the reverse cutting main rod 35 and the second bearing assembly 37 in sequence, and is connected to the cutting machine 21 through the hole outside guide wheel assembly.
The hole bottom reverse cutting device comprises: an oil cylinder 32 and a fixed bracket 31; the fixed support 31 extends into the drill hole 33 and is connected with the hole wall, and the fixed support 31 is connected with a floating support 34 through an oil cylinder 32 in a matching way; a movable gap is arranged between the fixed bracket 31 and the floating bracket 34; the fixed bracket 31 is provided with a reverse cutting main rod 35, and the oil cylinder 32 is connected with the reverse cutting main rod 35; a first bearing assembly 36 is connected to the first end of the reverse cutting main rod 35; the first bearing assembly 36 is rotatably connected to the bore bottom guide wheel assembly; a second bearing assembly 37 is connected to a second end of the reverse cutting main rod 35; a second bearing assembly 37 is rotatably coupled to the apertured outer guide wheel assembly.
The drill hole 33 is drilled in advance according to cutting requirements before cutting, and a hole supporting and back-cutting mechanism is placed inside the drill hole 33 before cutting.
The first bearing assembly 36 is specifically configured to be provided with a first bearing inner sleeve 61, and a first end of the first bearing inner sleeve 61 is connected with the reverse cutting main rod 35 through a thread; a first bearing 62 and a bearing spacer ring 63 are sleeved outside the second end of the first bearing inner sleeve 61, and a bearing outer sleeve 64 is sleeved on the first bearing 62;
the bearing housing 64 is provided with a first positioning screw hole, and the first positioning screw hole is connected with a first positioning bolt 65. First bearing snap rings 66 are respectively arranged between the first bearing 62 and the first bearing inner sleeve 61 and between the bearing outer sleeve 64 and the first bearing 62; a first end cap 67 is welded to the end face of the bearing housing 64.
The hole bottom guide wheel assembly is provided with a hole bottom wheel bracket 60 and a hole bottom wheel 68; one end of the hole bottom wheel bracket 60 is connected with the bearing outer sleeve 64, and the other end of the hole bottom wheel bracket 60 is connected with the central shaft of the hole bottom wheel 68; a hole bottom wheel groove is formed on the hole bottom wheel 68; a shroud 69 is mounted outside the bore bottom wheel 68.
Thus, the downhole wheel carriage 60 is coupled at one end to the bearing housing 64 to allow the downhole wheel carriage 60 to rotate on the first bearing assembly 36 to adjust the cutting angle and position. The supporting and reverse cutting mechanism in the hole can meet the requirement of the current cutting position and is suitable for cutting conditions.
Further, the second bearing assembly 37 is provided with a second bearing inner sleeve 71, and a first end of the second bearing inner sleeve 71 is connected with the reverse cutting main rod 35 through a thread; a second bearing 72 is sleeved outside the second end of the second bearing inner sleeve 71; a second positioning screw hole 73 is formed in the second bearing 72, and a positioning groove matched with the second positioning screw hole 73 is formed in the second bearing inner sleeve 71; the second positioning screw hole 73 is in threaded connection with a second positioning bolt, and the second positioning bolt extends into the positioning groove; a second end cap 74 is welded to the end face of the second bearing 72.
The guide wheel assembly outside the hole is provided with a hole outer wheel bracket 75 and a hole outer wheel 76; one end of the hole outer wheel bracket 75 is connected with the second bearing 72, and the other end of the hole outer wheel bracket 75 is connected with a central shaft of the hole outer wheel 76; the hole outer wheel 76 is provided with an outer wheel groove.
Thus, the hole wheel bracket 75 is connected at one end to the second bearing 72, allowing the hole wheel bracket 75 to rotate on the second bearing assembly 37 to adjust the cutting angle and position. The supporting and reverse cutting mechanism in the hole can meet the requirement of the current cutting position and is suitable for cutting conditions.
In the invention, the fixed bracket 31 is provided with an arc supporting plate 39 connected with the inner wall of the drilling hole 33, and the arc supporting plate 39 is provided with a cross brace 13 and two vertical braces 40; the first ends of the two vertical supports 40 are respectively connected with the arc-shaped supporting plate 39; the two ends of the cross brace 13 are respectively connected with the arc-shaped supporting plate 39 and pass through the two vertical braces 40; the reverse cut main bar 35 is disposed in the gap between the arc-shaped support plate 39 and the two vertical struts 40.
The floating support 34 is provided with an inclined support 41, and the inclined support 41 is connected with the inner wall of the drill hole 33; the inclined strut bracket 41 is connected with a floating pin 42; the floating pins 42 are staggered with the two vertical supports 40; the fixed end of the oil cylinder 32 is connected with the arc-shaped supporting plate 39; the movable end of the oil cylinder 32 is connected with the bracing bracket 41.
The up and down movement of the oil cylinder 32 can adjust the relative position between the fixed bracket 31 and the floating bracket 34. When using, in the drilling 33 that fixed bolster 31 is fixed earlier, rethread control hydro-cylinder 32 goes up and down, adjust the position of floating support 34 and fixed bolster 31, make the drilling 33 inner wall that floating support 34 and fixed bolster 31 held simultaneously top, and make hydro-cylinder 32 support floating support 34 and fixed bolster 31 motionless, guarantee the support dynamics, at the cutting process, can not make downthehole support anti-cutting mechanism remove, and then avoid causing supporting mechanism's removal at the cutting process, and then lead to unable cutting according to size position in advance, the material after the cutting can't satisfy operation requirement's drawback.
The hole bottom reverse cutting device is characterized in that a diamond rope drives a steel wire rope (diamond saw rope) with diamond beads to rotate around a cut object at a high speed through a hydraulic motor, the cut object is ground at a high speed under the action of a certain tension force, and generated abrasive dust and heat are taken away by cooling water, so that the purpose of separating the cut object is finally achieved. Because the diamond particles are used as the grinding material, hard objects such as stone, reinforced concrete and the like can be cut.
The hole bottom reverse cutting device adopts diamond as a grinding material, and can cut and separate any hard object; the hydraulic pump runs stably, the hydraulic motor is controlled remotely through the high-pressure oil pipe, vibration and noise are small during cutting, and the cut bodies are separated statically; thirdly, the diamond rope running at high speed is cooled by circulating water to take away sawdust; fourthly, the cutting is not limited by the shape and the size of the cut object and can be carried out in any direction; the rope saw has high cutting speed and high efficiency, and is superior to other cutting methods.
Before cutting, drilling holes, and respectively extending the inner support reverse cutting mechanisms in the two holes into preset drilled holes 33; one end of a cutting rope 38 is led out from the cutting equipment, the cutting rope 38 extends out of the cutting machine 21, bypasses a hole outer guide wheel assembly supporting the reverse cutting mechanism in the first hole, sequentially passes through a second bearing assembly 37, a reverse cutting main rod 35 and a first bearing assembly 36, then winds through the hole bottom guide wheel assembly, extends to a hole bottom guide wheel assembly supporting the reverse cutting mechanism in the second hole, bypasses the hole bottom guide wheel assembly, sequentially passes through the first bearing assembly 36, the reverse cutting main rod 35 and the second bearing assembly 37, and is connected to the cutting machine 21 through the hole outer guide wheel assembly. The cutting rope 38 forms a closed loop, and adjusts the cutting angle and the cutting position by adjusting, and adjusts the positions of the floating support 34 and the fixed support 31 by controlling the lifting of the oil cylinder 32, so that the floating support 34 and the fixed support 31 simultaneously support the inner wall of the drill hole 33, the oil cylinder 32 supports the floating support 34 and the fixed support 31 to be fixed, the supporting force is ensured, and the in-hole supporting reverse cutting mechanism cannot move in the cutting process. After the preparation meets the cutting requirements, the cutting process is started.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A full-rope sawing cave mining construction method is characterized by comprising the following steps:
step one, arranging a left pilot tunnel on a first side of a main raw material on a tunnel face;
step two, arranging a right pilot tunnel on the second side of the main raw material;
mining a left pilot tunnel, and forming a first side operation surface of the main raw material on the left pilot tunnel;
fourthly, mining a right side pilot tunnel, and forming a second side operation surface of the main raw material at the right side pilot tunnel;
fifthly, drilling and positioning at a preset position of the tunnel face of the main raw material;
and step six, cutting the main raw material block by blocks by using a large rope saw, and cutting the main raw material block.
2. The full rope saw underground mining construction method as claimed in claim 1,
the second step further comprises:
drilling and positioning the tunnel face and positioning and paying off the cutting line;
the drilling machine positions according to the hole position paying-off of the tunnel face, adjusts the position of the drilling machine and prepares for drilling construction;
drilling according to the drilling position positioned by the left pilot tunnel;
after the drilling of the left pilot hole is finished, moving the drilling machine to the right pilot hole;
drilling according to the drilling position positioned by the right pilot tunnel;
after drilling construction of the right pilot tunnel is finished, moving the drilling machine to the main raw material;
and drilling according to the drilling position positioned by the main raw material.
3. The full rope saw underground mining construction method as claimed in claim 2,
the first step further comprises the following steps:
and splitting and cutting the left pilot tunnel.
4. The full rope saw underground mining construction method as claimed in claim 2,
the second step further comprises:
and splitting and cutting the right pilot tunnel.
5. The full rope saw underground mining construction method as claimed in claim 3,
the third step also comprises:
inserting the hole bottom reverse cutting device into two adjacent drill holes of the first cutting block of the left pilot hole to cut;
after cutting, taking out the hole bottom reverse cutting device;
then inserting the cutting block into the other two adjacent drill holes of the first cutting block of the left pilot hole for cutting;
after cutting, taking out the first cutting block of the left pilot hole;
and by analogy, completing the cutting in sequence and taking out the rest split cutting blocks.
6. The full rope saw underground mining construction method as claimed in claim 4,
the fourth step also comprises:
inserting the hole bottom reverse cutting device into two adjacent drill holes of the first cutting block of the right pilot hole to cut;
after cutting, taking out the hole bottom reverse cutting device;
then inserting the cutting block into the other two adjacent drill holes of the first cutting block of the right pilot hole for cutting;
after cutting, taking out the first cutting block of the right pilot hole;
and by analogy, completing the cutting in sequence and taking out the rest split cutting blocks.
7. The full rope saw underground mining construction method as claimed in claim 2,
the second step further comprises:
dividing the main raw material into two parts from the central line of the main raw material;
drilling two intersection points of the central line of the main raw material and the upper and lower end surfaces of the main raw material;
cutting a first side surface of a central line of the main raw material;
inserting the hole bottom reverse cutting device into two adjacent drill holes on the first side surface of the central line of the main raw material to cut;
after cutting, taking out the hole bottom reverse cutting device;
then inserting the main raw material into the other two adjacent drill holes on the first side surface of the central line of the main raw material for cutting;
after cutting, taking out the cutting block on the first side surface of the central line of the main raw material;
and by analogy, cutting is finished, and the cutting block on the second side surface of the central line of the main raw material is taken out.
8. The full-rope saw underground mining construction method as claimed in claim 5 or 6,
the hole bottom reverse cutting device adopted by the method comprises: a cutting machine and two hole inner support reverse cutting mechanisms;
the inner support reverse cutting mechanisms in the two holes respectively extend into preset drilled holes;
the cutting rope extends out of the cutting machine, bypasses the hole outer guide wheel assembly supporting the reverse cutting mechanism in the first hole, sequentially passes through the second bearing assembly, the reverse cutting main rod and the first bearing assembly, then bypasses the hole bottom guide wheel assembly, extends into the second hole to support the hole bottom guide wheel assembly supporting the reverse cutting mechanism, bypasses the hole bottom guide wheel assembly, sequentially passes through the first bearing assembly, the reverse cutting main rod and the second bearing assembly, and is connected to the cutting machine through the hole outer guide wheel assembly.
9. The full rope saw underground mining construction method as claimed in claim 8,
downthehole support undercut mechanism includes: an oil cylinder and a fixed bracket;
the fixed support extends into the drill hole and is connected with the hole wall, and the fixed support is connected with a floating support in a matching way through an oil cylinder;
a movable gap is arranged between the fixed bracket and the floating bracket;
the fixed bracket is provided with a reverse cutting main rod, and the oil cylinder is connected with the reverse cutting main rod;
the first end of the reverse cutting main rod is connected with a first bearing assembly;
the first bearing assembly is rotatably connected with the hole bottom guide wheel assembly;
the second end of the reverse cutting main rod is connected with a second bearing assembly;
the second bearing assembly is rotatably connected with the outer guide wheel assembly with the hole;
the fixed support is provided with an arc-shaped supporting plate connected with the inner wall of the drill hole, and the arc-shaped supporting plate is provided with a cross brace and two vertical braces;
the first ends of the two vertical supports are respectively connected with the arc-shaped supporting plate;
two ends of the cross brace are respectively connected with the arc-shaped supporting plate and penetrate through the two vertical braces;
the reverse cutting main rod is arranged in a gap between the arc-shaped supporting plate and the two vertical supports;
the floating support is provided with an inclined support which is connected with the inner wall of the drill hole;
the inclined strut bracket is connected with a floating pin;
the floating pins and the two vertical supports are arranged in a staggered manner;
the fixed end of the oil cylinder is connected with the arc-shaped supporting plate; the movable end of the oil cylinder is connected with the inclined strut bracket.
10. The full rope saw underground mining construction method as claimed in claim 8,
the first bearing assembly is provided with a first bearing inner sleeve, and the first end of the first bearing inner sleeve is connected with the reverse cutting main rod through threads; a first bearing and a bearing spacer ring are sleeved outside the second end of the first bearing inner sleeve, and a bearing outer sleeve is sleeved on the first bearing;
a first positioning screw hole is arranged on the bearing outer sleeve and connected with a first positioning bolt
Bearing snap rings are respectively arranged between the first bearing and the first bearing inner sleeve and between the bearing outer sleeve and the first bearing;
a first end cover is welded on the end face of the bearing outer sleeve;
the hole bottom guide wheel component is provided with a hole bottom wheel bracket and a hole bottom wheel;
one end of the hole bottom wheel bracket is connected with the bearing outer sleeve, and the other end of the hole bottom wheel bracket is connected with a central shaft of the hole bottom wheel;
a hole bottom wheel groove is formed in the hole bottom wheel;
a protective cover is covered on the outer side of the hole bottom wheel;
the second bearing assembly is provided with a second bearing inner sleeve, and the first end of the second bearing inner sleeve is connected with the reverse cutting main rod through threads; the second bearing is sleeved outside the second end of the second bearing inner sleeve;
a second positioning screw hole is formed in the second bearing, and a positioning groove matched with the second positioning screw hole is formed in the inner sleeve of the second bearing;
the second positioning screw hole is in threaded connection with a second positioning bolt, and the second positioning bolt extends into the positioning groove;
a second end cover is welded on the end face of the second bearing;
the hole outer guide wheel component is provided with a hole outer wheel bracket and a hole outer wheel;
one end of the hole outer wheel bracket is connected with the second bearing, and the other end of the hole outer wheel bracket is connected with a central shaft of the hole outer wheel;
the hole outer wheel is provided with an outer wheel groove.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010404370.7A CN111691883B (en) | 2020-05-13 | 2020-05-13 | Full-rope sawing cave mining construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010404370.7A CN111691883B (en) | 2020-05-13 | 2020-05-13 | Full-rope sawing cave mining construction method |
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|---|---|---|---|---|
| CN104045014A (en) * | 2014-06-14 | 2014-09-17 | 国家电网公司 | Pole arraying frame for pole welding |
| CN104695962A (en) * | 2015-02-11 | 2015-06-10 | 泉州市洛江区双阳金刚石工具有限公司 | Combined type stone block exploiting method |
| CN109812265A (en) * | 2017-11-22 | 2019-05-28 | 四川华泽源矿业有限公司 | A kind of marble cave adopts method for fetching |
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2020
- 2020-05-13 CN CN202010404370.7A patent/CN111691883B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045014A (en) * | 2014-06-14 | 2014-09-17 | 国家电网公司 | Pole arraying frame for pole welding |
| CN104695962A (en) * | 2015-02-11 | 2015-06-10 | 泉州市洛江区双阳金刚石工具有限公司 | Combined type stone block exploiting method |
| CN109812265A (en) * | 2017-11-22 | 2019-05-28 | 四川华泽源矿业有限公司 | A kind of marble cave adopts method for fetching |
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