CN114278139B - Mining-correcting cooperative power transmission tower maintenance method - Google Patents
Mining-correcting cooperative power transmission tower maintenance method Download PDFInfo
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- CN114278139B CN114278139B CN202111421338.0A CN202111421338A CN114278139B CN 114278139 B CN114278139 B CN 114278139B CN 202111421338 A CN202111421338 A CN 202111421338A CN 114278139 B CN114278139 B CN 114278139B
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Abstract
The invention relates to a mining-correcting cooperative power transmission tower maintenance method, which is used for the situation that a coal seam is shallowly buried and a power transmission line is arranged along the strike direction of the coal seam, wherein a first power transmission tower is arranged in the middle of the strike of a coal pillar supporting area, and the middle of a tower body of the first power transmission tower is set into a structure which can lift the upper part of the tower body and rotate the upper part of the tower body; arranging a second transmission tower on the full mining area, wherein the second transmission tower sets the middle part of the tower body into a structure which can enable the upper part of the tower body to rotate; according to the method, aiming at the subsidence characteristic of the mined-out goaf of the shallow-buried ore layer, power transmission towers with different deviation rectifying characteristics are arranged in different areas in a targeted manner, so that a deviation rectifying power transmission tower group applied to the mined-out goaf of the coal mine is formed; the power transmission tower set can be matched with dynamic subsidence in the stoping process of a working face in real time, so that a tower arm of the power transmission tower is always kept in a straight state; the adjusting layer is arranged at the middle upper part of the tower body, so that the adjusting difficulty is greatly reduced.
Description
Technical Field
The invention relates to the field of power transmission towers, in particular to a power transmission tower maintenance method applied to mining and correction coordination of a mining area of a mineral seam.
Background
The power transmission line iron tower (power transmission tower) is a tower structure for supporting and making overhead conductors, and is a high-rise tower-shaped structure capable of making conductors and conductors, conductors and towers and conductors retain a specified safety distance to ground or cross spanning objects. The power transmission tower is a high-rise structure, so the power transmission tower is very sensitive to inclined deformation and has high requirement on uneven settlement of a foundation, and the conventional power transmission tower and the foundation structure thereof are difficult to adapt to the ground surface movement deformation of a coal mine goaf, so that the power transmission tower is inclined or even overturns. In the prior art, a deviation-rectifying structure is generally arranged at a foundation structure of a power transmission tower to reduce the inclination influence caused by mining, but the structure is complex, the deviation-rectifying structure is difficult to maintain after rectification, and the stability is poor, and if a gear meshing mode is adopted for rectification, the power transmission tower is instantaneously inclined due to the fact that the gear is subjected to yielding in the later stage; meanwhile, the existing power transmission tower with the deviation correcting function does not match the deviation correcting function with the dynamic law of mining surface subsidence/inclination, mainly corrects the deviation after the mining surface subsidence/inclination is stable, and has poor pertinence.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a mining-correcting coordinated power transmission tower maintenance method, which is used for the condition that a shallow coal seam is buried and a power transmission line is arranged along the strike direction of the coal seam, and comprises the following steps:
a. stoping from right to left in the stoping area, arranging stoping working faces in the stoping area along the direction of the coal seam, arranging stoping areas for the stoping area in the stoping area mountain coal pillars on the left side of the stoping working faces, arranging mining area mountain coal pillars of adjacent right stoping areas on the right side of the stoping working faces, and arranging the power transmission line in the middle of the stoping working faces in the middle of the stoping area inclined to the middle;
on the mining areaThe width of the mountain coal pillar is W 1 The buried depth of the coal seam is H, the caving angle of the rock stratum is delta, the distance between the power transmission towers is J, and H/tan delta + W is satisfied for the shallow buried coal seam 1 J is less than 2, and a power transmission tower does not need to be arranged on the cantilever supporting area;
b. arranging a first power transmission tower in the middle of the trend of the coal pillar supporting area, wherein the middle of the tower body of the first power transmission tower is of a structure which can lift the upper part of the tower body and rotate the upper part of the tower body;
determining the length L of the stope face so as to satisfy L = (N-1) xJ-W 1 N is the number of the power transmission towers between two adjacent coal pillar supporting areas and comprises the power transmission tower right above the coal pillar supporting areas;
c. arranging a second transmission tower on the full mining area according to the distance J, wherein the second transmission tower sets the middle part of the tower body into a structure which can enable the upper part of the tower body to rotate;
d. stoping of stoping working faces in the stope area is carried out from the middle to two sides, namely, firstly, the stope working face right below the stope power transmission tower adopts a backward stoping mode from right to left;
along with the stoping of the stoping working face, the first power transmission tower on the right side gradually returns to the right leftwards, and at the moment, the upper part of the tower body is rotated rightwards, so that the upper part of the tower body is always kept straight;
along with the extraction of the extraction working face, the second power transmission tower inclines rightwards, the upper part of the tower body rotates leftwards (anticlockwise) gradually, then along with the continuous extraction of the extraction working face, the second power transmission tower starts to return rightwards leftwards, the upper part of the tower body rotates gradually, and the upper part of the tower body of the second power transmission tower is kept straight all the time in the whole process;
with the continuous stoping of the stoping working face, the first power transmission tower on the left side begins to incline rightwards, and the upper part of the tower body is gradually rotated leftwards, so that the upper part of the tower body of the first power transmission tower on the left side is always kept straight;
e. then alternately stoping working faces on two sides back and forth;
f. after the recovery of the mining area is finished and the ground surface sinks stably, integrally lowering the upper part of the tower body of the first power transmission tower to be coordinated with the height of the second power transmission tower; reinforcing the middle parts of the tower bodies of the first power transmission tower and the second power transmission tower on the right side;
g. and when the mining area on the left side is used for mining, the first power transmission tower on the left side of the mining area is maintained by referring to the maintenance method of the first power transmission tower on the right side of the mining area.
Preferably, the whole first power transmission tower is of a quadrangular frustum pyramid structure and comprises an upper tower body, a middle telescopic tower body, a middle rotary tower body, a lower tower body and a tower base which are sequentially connected from top to bottom; the middle telescopic tower body comprises lifting telescopic columns with the periphery parallel to the side surfaces of the quadrangular frustum pyramid and a lifting telescopic column with the middle vertical part, and the bottom ends of the lifting telescopic columns are fixedly connected through a steel frame; the middle part rotating tower body comprises a middle part rotating tower seat in an inclined half quadrangular frustum pyramid form, the upper surface of the middle part rotating tower body is fixed on the bottom surface of the middle part telescopic tower body, the lower edge of the middle part rotating tower body is hinged with the left side of the top of the lower part tower body, the lower end of a rotary telescopic column is hinged with the right side of the top of the lower part tower body, and the upper end of the middle part rotating tower seat is hinged with the right edge of the middle part rotating tower seat.
Preferably, the second power transmission tower is integrally of a quadrangular frustum pyramid structure and comprises an upper tower body, a middle rotary tower body, a lower tower body and a tower base which are sequentially connected from top to bottom; the middle rotating tower body comprises a middle rotating tower seat in the form of an oblique half quadrangular frustum, the upper surface of the middle rotating tower body is fixed on the bottom surface of the upper tower body, the lower edge of the middle rotating tower body is hinged with the left side of the top of the lower tower body, the lower end of a rotating telescopic column is hinged with the right side of the top of the lower tower body, and the upper end of the middle rotating tower seat is hinged with the right edge of the middle rotating tower seat.
Furthermore, the rotary telescopic column and the lifting telescopic column can be of an electric control telescopic structure or a hydraulic telescopic structure; and tower walls are arranged along the front and back directions of the upper tower body and used for supporting the power transmission line.
Preferably, the step b further comprises the step of determining the stoping face width W so that W is larger than H, and the stoping area of the middle face is fully stoped along the inclination.
Preferably, in the step d, the rotary telescopic column is positioned at the right side;
along with the stoping of the stoping working face of the stoping area, the first power transmission tower on the right side is gradually rightly rightwards, and the rotary telescopic column is gradually contracted at the moment, so that the upper tower body and the middle telescopic tower body are always kept right;
along with the stoping of the stoping working face, the second power transmission tower inclines rightwards, the rotary telescopic column is lifted up gradually, then along with the continuous stoping of the stoping working face, the second power transmission tower starts to rightwards return leftwards, the rotary telescopic column is contracted gradually, and the upper tower body of the second power transmission tower is kept straight all the time in the whole process;
and (3) with the continuous stoping of the stoping working face, the first power transmission tower on the left side begins to incline rightwards, and the rotary telescopic column on the right side is gradually jacked up at the moment, so that the upper tower body and the middle telescopic tower body of the first power transmission tower on the left side are always kept straight.
Preferably, in step d, during stope face stoping, the middle telescoping body of the first transmission tower is also retracted to coordinate with the height of the second transmission tower in real time.
Preferably, in the step e, when the stoping working faces close to the two sides of the middle stoping working face before and after stoping are inclined, if the influence of the stoping on the power transmission tower is large, deviation correction is performed with reference to the step d.
Preferably, in step f, the middle telescopic body of the first transmission tower is integrally contracted to be matched with the height of the second transmission tower; and reinforcing the middle telescopic tower body and the middle rotary tower body of the first power transmission tower on the right side and the middle rotary tower body of the second power transmission tower.
Further, the power transmission tower truss is adopted for reinforcement or the power transmission tower truss is adopted to replace the lifting telescopic column and the rotating telescopic column for reinforcement.
Has the advantages that: aiming at the characteristic of subsidence of a mined-out goaf after a shallow-buried ore layer is mined, power transmission towers with different deviation rectifying characteristics are arranged in different areas in a targeted manner, so that a deviation rectifying power transmission tower group applied to the mined-out goaf of the coal mine is formed; the power transmission tower set can be matched with dynamic subsidence in the stoping process of a working face in real time, so that a tower arm of the power transmission tower is always kept in a straight state; the adjusting layer is arranged at the middle upper part of the tower body, so that the adjusting difficulty is greatly reduced.
Drawings
FIG. 1 is a layout of a correctable transmission tower of the present invention in a coal mine mining area, with the top view and the bottom view in cross section along the strike;
fig. 2 is a first transmission tower with a correctable function according to the invention;
fig. 3 is a second transmission tower with a correctable function of the present invention;
in fig. 1: the method comprises the following steps that (1) a coal pillar 1 on the mountain of a mining area, a coal pillar supporting area 11, a first power transmission tower 12, a stope face 2, a full mining area 21, a second power transmission tower 22, a rock stratum caving angle 4, a boundary 5, an intersection 6 of the boundary and the ground surface and a cantilever supporting area 7 are arranged;
in fig. 2: first power transmission tower 12: an upper tower body 121, a middle telescopic tower body 122, a middle rotary tower base 123, a rotary telescopic column 124, a lower tower body 125, a tower base 126 and a tower wall 127;
in fig. 3: second power transmission tower 22: an upper tower body 221, a middle rotary tower base 222, a rotary telescopic column 223, a lower tower body 224, a tower base 225 and a tower wall 226.
Detailed Description
The technical solution of the present invention is described in more detail below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1 to 3, the deviation-correctable power transmission tower group for a coal mining area of the present invention comprises a first power transmission tower 12 disposed on a pillar supporting area 11 and a second power transmission tower 22 disposed on a sufficient mining area 21;
the first power transmission tower 12 sets the middle part of the tower body to be a structure which can lift the upper part of the tower body and rotate the upper part of the tower body; specifically, the first power transmission tower 12 is a rectangular frustum structure integrally, and includes an upper tower body 121, a middle telescopic tower body 122, a middle rotary tower body, a lower tower body 125, and a tower base 126, which are sequentially connected from top to bottom; the middle telescopic tower body 122 comprises lifting telescopic columns parallel to the sides of the quadrangular frustum pyramid and vertical lifting telescopic columns at the middle, and the bottom ends of the lifting telescopic columns are connected and fixed through a steel frame; the middle rotating tower body comprises a middle rotating tower seat 123 in the form of an oblique half quadrangular frustum, the upper surface of the middle rotating tower seat is fixed on the bottom surface of the middle telescopic tower body 122, the lower edge of the middle rotating tower seat is hinged with the left side of the top of the lower tower body 125, the lower end of a rotating telescopic column 124 is hinged with the right side of the top of the lower tower body 125, and the upper end of the rotating telescopic column is hinged with the right edge of the middle rotating tower seat 123; the rotary telescopic column and the lifting telescopic column can be of an electric control telescopic structure or a hydraulic telescopic structure; a tower wall 127 for supporting the power transmission line is provided along the front and rear direction of the upper tower body 121;
the second transmission tower 22 sets the middle part of the tower body to a structure that can rotate the upper part of the tower body; specifically, the second power transmission tower 22 is integrally in a quadrangular frustum pyramid structure, and includes an upper tower body 221, a middle rotary tower body, a lower tower body 224 and a tower base 225, which are sequentially connected from top to bottom; the middle rotating tower body comprises a middle rotating tower seat 222 in the form of an oblique half-quadrangular frustum, the upper surface of the middle rotating tower seat is fixed on the bottom surface of the upper tower body 221, the lower edge of the middle rotating tower seat is hinged with the left side of the top of the lower tower body 224, the lower end of a rotating telescopic column 223 is hinged with the right side of the top of the lower tower body 224, and the upper end of the middle rotating tower seat 222 is hinged with the right edge of the middle rotating tower seat; the rotary telescopic column 223 can be an electric control telescopic structure or a hydraulic telescopic structure; a tower wall 226 is provided along the front-rear direction of the upper tower body 221 for supporting the power transmission line.
A method for maintaining a power transmission tower by adopting the deviation-correctable power transmission tower group to perform mining and correction coordination is used for a shallow coal seam (generally, a coal seam with the buried depth of less than 250 m), and the power transmission line is basically arranged along the trend direction of the coal seam, and comprises the following steps:
a. stoping from right to left in the stoping area, arranging a stoping working face 2 in the stoping area along the coal seam trend, wherein the length of the stoping working face 2 is L, arranging a stoping area top in the stoping area top coal column 1 on the left side of the stoping working face 2, arranging a stoping area top coal column 1 of the adjacent right stoping area on the right side of the stoping working face 2, and arranging a power transmission line in the middle of the stoping working face 2 in the middle of the stoping area inclined to the middle;
the width of the coal pillar 1 on the mountain of the mining area is W 1 The buried depth of the coal seam is H, the caving angle 4 of the rock stratum is delta, the distance between the power transmission towers is J, and the depth of the shallow buried coal seam meets the requirement of H/tan delta + W 1 J is more than 2, namely, a transmission tower is not required to be arranged on the cantilever supporting area 7;
for example, the width of the coal pillar on the mountain of a mining area of a certain mine is W 1 The coal seam buried depth is H =200m, the rock stratum collapse angle is 60 degrees, the distance between power transmission towers is 300m, and the depth of the power transmission towers satisfies 200/tan 60 degrees +60/2=145.47m < 300m;
coal pillar for climbing mountain in mining areaThe ground surface area right above is a coal pillar supporting area 11 with the width W 1 (ii) a The rock stratum at the upper part of the stope face 2 collapses after stope, an included angle 4 formed by a collapse boundary 5 between the collapsed rock stratum and an undisrupted rock stratum supported by a mountain coal pillar on a mining area and a horizontal plane is a rock stratum collapse angle delta, and a junction 6 of the collapse boundary 5 and the ground surface divides the ground surface right above the stope face 2 into cantilever support areas 7 adjacent to coal pillar support areas 11 at two sides and a full mining area 21 in the middle; after the stope face 2 in the mining area is stoped, the subsidence of the ground in the sufficient mining area 21 is basically consistent, almost no inclination exists, and the ground of the cantilever supporting area 7 can incline towards the direction of the sufficient mining area 2; the cantilever-support region 7 has a length Lx = H/tan δ, and the full-drive region 21 has a length Lw = L-2 × Lx.
b. Arranging a first power transmission tower 12 in the middle of the trend of the coal pillar supporting area 11, wherein the middle of the tower body of the first power transmission tower 12 is set to be a structure which can lift the upper part of the tower body and rotate the upper part of the tower body;
determining the length L of the stope face so as to satisfy L = (N-1) xJ-W 1 N is the number of power transmission towers between two adjacent coal pillar supporting areas 11, and includes a power transmission tower right above the coal pillar supporting area 11;
if a certain mine is provided with 7 power transmission towers between two adjacent coal pillar supporting areas 11, the length L of a stope face is = (7-1) × 300-60=1740m;
c. a second transmission tower 22 is arranged on the full mining area 21 according to the interval J, the second transmission tower 22 sets the middle part of the tower body to a structure that can rotate the upper part of the tower body, with the rotary telescopic column 223 located on the right side;
d. stoping of the stope face 2 in the stope area is carried out from the middle to two sides, namely, firstly, the stope face right below the stope power transmission tower adopts a backward stoping mode from right to left;
the stoping sequence from right to left is adopted in the stoping interval, namely the stoping of the right stope is finished, at this time, the lower tower body 125 and the tower base 126 of the first power transmission 12 on the right side are in a state of inclining to the right, the upper tower body 121 and the middle telescopic tower body 122 are in a state of straightening by jacking the rotary telescopic column 124 on the right side, and the lifting telescopic column is in a state of contracting;
with the stope of the stope face 2 of the mining area, the first power transmission tower 12 on the right side gradually inclines to the left (returns to the right), and at the moment, the rotary telescopic column 124 gradually contracts, so that the upper tower body 121 and the middle telescopic tower body 122 are always kept straight;
with the stoping of the stoping face 2, the second power transmission tower 22 inclines rightwards, the rotary telescopic column 223 is lifted up gradually, then with the continuous stoping of the stoping face 2, the second power transmission tower 22 begins to incline leftwards (return to the right), the rotary telescopic column 223 is contracted gradually, finally with the formation of a flat bottom structure of a full stoping area, the tower base 225 is restored to be horizontal, and the whole process enables the upper tower body 221 of the second power transmission tower to be kept straight all the time;
as the stope face 2 continues to be stoped, the first transmission tower 12 on the left side begins to incline to the right, and the rotating telescopic column 124 on the right side is gradually jacked up, so that the upper tower body 121 and the middle telescopic tower body 122 of the first transmission tower on the left side are always kept straight;
for the first power transmission tower, after the recovery of the mining area on one side of the first power transmission tower is finished, the first power transmission tower inclines towards the mining area, and due to the fact that a shallow coal seam is buried, the inclination amount is large, the upper tower body 121 and the middle telescopic tower body 122 are in a straight state by jacking the right rotary telescopic column 124, and after the recovery of the mining area on the other side of the first power transmission tower, the upper tower body 121 and the middle telescopic tower body 122 can be restored to the straight state (the recovery areas on the left side and the right side are symmetrical), and at the moment, the upper tower body 121 and the middle telescopic tower body 122 are in the straight state by contracting the telescopic column 124.
e. Then, alternately stoping the stoping working faces on the two sides back and forth, and correcting the deviation with reference to the step d if the transmission tower is greatly influenced by stoping and has an inclination problem when the stoping working faces on the two sides of the stoping working face in the middle are close to the stoping working faces before and after stoping;
in the inclination, the final power transmission tower cannot incline towards two sides because the extraction working faces on the front side and the rear side are symmetrical, so that deviation rectification in the inclination is not needed;
f. after the recovery in the mining area is completed and the ground surface subsidence is stable, the middle telescopic tower body 122 of the first power transmission tower 12 is integrally contracted so as to be coordinated with the height of the second power transmission tower 22; reinforcing the middle telescopic tower body 122 of the first power transmission tower on the right side, the middle rotary tower body and the middle rotary tower body of the second power transmission tower, or replacing the lifting telescopic column and the rotary telescopic column with a conventional power transmission tower truss to realize reinforcement;
g. and when the mining area on the left side is used for mining, the first power transmission tower on the left side (the right side of the mining area on the left side) of the mining area is maintained/adjusted by referring to the maintenance/adjustment method of the first power transmission tower on the right side of the mining area.
Preferably, step b further comprises the step of determining the stoping face width W so that W > H is satisfied, and ensuring that the stoped stope of the middle face is fully stoped along the trend, for example, the width of a certain mining face is 250m.
Preferably, in step d, the middle telescoping body of the first transmission tower 12 is also collapsed during stope face stoping to coordinate with the height of the second transmission tower 22 in real time.
Claims (8)
1. A mining-correcting cooperative power transmission tower maintenance method is used for the situation that a shallow coal seam is buried and a power transmission line is arranged along the trend direction of the coal seam, and is characterized by comprising the following steps:
a. stoping from right to left in the stoping area, arranging stoping working faces in the stoping area along the direction of the coal seam, arranging stoping areas for the stoping area in the stoping area mountain coal pillars on the left side of the stoping working faces, arranging mining area mountain coal pillars of adjacent right stoping areas on the right side of the stoping working faces, and arranging the power transmission line in the middle of the stoping working faces in the middle of the stoping area inclined to the middle;
the width of the coal pillar on the mountain of the mining area is W 1 The buried depth of the coal seam is H, the caving angle of the rock stratum is delta, the distance between the power transmission towers is J, and H/tan delta + W is satisfied for the shallow buried coal seam 1 J is less than 2, and a power transmission tower does not need to be arranged on the cantilever supporting area;
b. arranging a first power transmission tower in the middle of the trend of the coal pillar supporting area, wherein the middle of the tower body of the first power transmission tower is of a structure which can lift the upper part of the tower body and rotate the upper part of the tower body;
determining the length L of the stope face so as to satisfy L = (N-1) xJ-W 1 N is between two adjacent coal pillar supporting areasThe number of the power transmission towers comprises the power transmission tower right above the coal pillar supporting area;
c. arranging a second transmission tower on the full mining area according to the distance J, wherein the second transmission tower sets the middle part of the tower body into a structure which can enable the upper part of the tower body to rotate;
d. stoping of stoping working faces in the mining area is carried out from the middle to two sides, namely, firstly, the stoping working face right below the power transmission tower is stoped, and a backward stoping mode from right to left is adopted;
along with the stoping of the stoping working face, the first power transmission tower on the right side gradually returns to the right leftwards, and at the moment, the upper part of the tower body is rotated rightwards, so that the upper part of the tower body is always kept straight;
along with the stoping of the stoping working face, the second power transmission tower inclines rightwards, the upper part of the tower body rotates leftwards gradually, then along with the continuous stoping of the stoping working face, the second power transmission tower starts to return rightwards, the upper part of the tower body rotates gradually, and the upper part of the tower body of the second power transmission tower is kept straight all the time in the whole process;
with the continuous stoping of the stoping working face, the first power transmission tower on the left side begins to incline rightwards, and the upper part of the tower body is gradually rotated leftwards, so that the upper part of the tower body of the first power transmission tower on the left side is always kept straight;
e. then alternately stoping working faces on two sides;
f. after the recovery of the mining area is finished and the ground surface sinks stably, integrally lowering the upper part of the tower body of the first power transmission tower to be coordinated with the height of the second power transmission tower; reinforcing the middle parts of the tower bodies of the first power transmission tower and the second power transmission tower on the right side;
g. and when the mining area on the left side is used for mining, the first power transmission tower on the left side of the mining area is maintained by referring to the maintenance method of the first power transmission tower on the right side of the mining area.
2. The maintenance method for the transmission tower according to claim 1, wherein the first transmission tower has a rectangular frustum structure as a whole, and comprises an upper tower body, a middle telescopic tower body, a middle rotary tower body, a lower tower body and a tower base which are sequentially connected from top to bottom; the middle telescopic tower body comprises lifting telescopic columns with the periphery parallel to the side surfaces of the quadrangular frustum pyramid and a lifting telescopic column with the middle vertical part, and the bottom ends of the lifting telescopic columns are fixedly connected through a steel frame; the middle rotary tower body comprises a middle rotary tower seat in the form of an oblique half quadrangular frustum, the upper surface of the middle rotary tower body is fixed on the bottom surface of the middle telescopic tower body, the lower edge of the middle rotary tower body is hinged with the left side of the top of the lower telescopic tower body, the lower end of a rotary telescopic column is hinged with the right side of the top of the lower telescopic tower body, and the upper end of the rotary telescopic column is hinged with the right edge of the middle rotary tower seat; tower walls are arranged along the front and back directions of the upper tower body.
3. The maintenance method of the transmission tower according to claim 1 or 2, wherein the second transmission tower has a rectangular frustum structure as a whole, and comprises an upper tower body, a middle rotating tower body, a lower tower body and a tower base which are sequentially connected from top to bottom; the middle rotating tower body comprises a middle rotating tower seat in the form of an oblique half quadrangular frustum, the upper surface of the middle rotating tower seat is fixed on the bottom surface of the upper tower body, the lower edge of the middle rotating tower seat is hinged with the left side of the top of the lower tower body, the lower end of a rotating telescopic column is hinged with the right side of the top of the lower tower body, and the upper end of the middle rotating tower seat is hinged with the right edge of the middle rotating tower seat; tower walls are arranged along the front and back directions of the upper tower body.
4. The method for maintaining a power transmission tower according to claim 3, wherein the step b further comprises the step of determining the stope face width W so that W > H is satisfied to ensure that the stope area is fully stoped along the dip in the middle face.
5. The method for maintaining a transmission tower according to claim 3, wherein in the step d, the rotating telescopic column is positioned at the right side;
along with the stoping of the stoping working face of the stoping area, the first power transmission tower on the right side is gradually rightly rightwards, and the rotary telescopic column is gradually contracted at the moment, so that the upper tower body and the middle telescopic tower body are always kept right;
along with the stoping of the stoping working face, the second power transmission tower inclines rightwards, the rotary telescopic column is lifted up gradually, then along with the continuous stoping of the stoping working face, the second power transmission tower starts to rightwards return leftwards, the rotary telescopic column is contracted gradually, and the upper tower body of the second power transmission tower is kept straight all the time in the whole process;
and (3) with the continuous stoping of the stoping working face, the first power transmission tower on the left side begins to incline rightwards, and the rotary telescopic column on the right side is gradually jacked up at the moment, so that the upper tower body and the middle telescopic tower body of the first power transmission tower on the left side are always kept straight.
6. The method for maintaining a transmission tower according to claim 5, wherein in step d, the middle telescoping body of the first transmission tower is also retracted to coordinate with the height of the second transmission tower in real time during stope face stoping.
7. The maintenance method of the power transmission tower according to claim 3, wherein in the step e, when the stoping working faces on the two sides of the middle stoping working face are close to each other before and after the stoping, if the power transmission tower is greatly influenced by the stoping and the inclination problem occurs, the deviation correction is carried out with reference to the step d.
8. The method for maintaining a transmission tower according to claim 3, wherein in step f, the middle telescopic body of the first transmission tower is integrally contracted to be compatible with the height of the second transmission tower; and reinforcing the middle telescopic tower body and the middle rotary tower body of the first power transmission tower on the right side and the middle rotary tower body of the second power transmission tower.
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| CN103669431B (en) * | 2013-11-18 | 2016-06-01 | 国家电网公司 | A kind of colliery minery electric power pylon inclination adjusting device |
| CN108396766A (en) * | 2018-05-21 | 2018-08-14 | 河南理工大学 | A kind of goaf place high voltage power transmission tower can rectify a deviation basis and its method for correcting error |
| CN111608198A (en) * | 2020-07-01 | 2020-09-01 | 中国地质环境监测院 | Deformation-resistant device, deformation monitoring system and deformation-resistant monitoring method for high-voltage line tower |
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2021
- 2021-11-26 CN CN202111421338.0A patent/CN114278139B/en active Active
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