CN205225285U - Fall that trapezoidal galianconism is open to be strutted - Google Patents
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- CN205225285U CN205225285U CN201521066765.1U CN201521066765U CN205225285U CN 205225285 U CN205225285 U CN 205225285U CN 201521066765 U CN201521066765 U CN 201521066765U CN 205225285 U CN205225285 U CN 205225285U
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Abstract
The utility model relates to a coal mine tunnel is with strutting, concretely relates to fall that trapezoidal galianconism is open to be strutted, including strutting the body, the body of strutting its characterized in that is constituted by first galianconism, second galianconism, third galianconism, fourth galianconism, the 5th galianconism, the 6th galianconism, the 7th galianconism: first galianconism, second galianconism, third galianconism, fourth galianconism, the 5th galianconism and the 6th galianconism between head and the tail swing joint in proper order, this struts that technology adopts down just trapezoidal canopy of trapezoidal change or U type canopy, and semi -closed strutting is strutted into the closed type, six arms are line type arm roof beam, both ends adopt that peg graft or articulated mode is connected, receive, when the end, side pressure, pressure can release through the extruding of coal in space between curb girder, grade beam. Should strut mode simple structure, and be convenient for erect, easy maintenance, repeatedly usable.
Description
Technical field
The utility model relates to a kind of coal mine roadway supporting, is specifically related to the open supporting of a kind of inverted trapezoidal galianconism.
Background technology
One, the shortcoming of the trapezoidal canopy supporting existence of I-beam for mine:
1, back timber and leg long general at more than 2m, flexible after pressurized, spoilage is high; Need special equipment to correct after bending, greatly, cost of transportation is high, and scrappage is high for freight volume, can recycling rate of waterused low.
2, two legs are facedown pressure-bearing, not only will bear top pressure, also will bear side pressure, easily cause bending.
3, be generally canopy supporting, materials are many, and cost is high.
4, due to the termination that the pressure-bearing surface of two legs is I-beam for mine, even if wear boots, post boots are by 0.2 × 0.2 × 2=0.08m
2, by calculating canopy: 0.08 × 2=0.16m
2, because bearing area is little, pucking speed is fast, and head-room can not ensure, maintenance capacity is large.
5, because pucking speed is fast, head-room can not ensure, ordinary circumstance road maintenance needs to carry joint, puies forward joint workload on the one hand large, and progress is slow, and need more maintenance troop, maintenance cost is high; On the other hand, Henan western three-soft seam thickness is thin, repeatedly carries joint and easily causes a large amount of spoil to mix in coal, reduces ature of coal.
6, because this supporting beam leg is unsuitable long, so drift section can not meet the demands.
Two, the shortcoming of U-shaped canopy existence:
Although 1, U-shaped canopy top is arch, reduce top pressure, because it is highly high general at 3-3.5m, what add leg is subject to side pressure height.Although U-shaped hardness of steel is high, but because its height is far above the height 2-2.3m of trapezoidal canopy, so its intensity can reduce greatly, and the pressure that suffered side pressure is born much larger than trapezoidal canopy leg, still flexible or torsional deformation, and easily cause arch back timber to become Λ type back timber itself to have that U-shaped to become V-type scrappage high, can recycling rate of waterused low.Slightly light any also need transport to ground and keeped in repair by special equipment, maintenance cost is high.
2, there is same ground drum problem in U-shaped canopy and trapezoidal canopy.Although its height and section add many than trapezoidal canopy, are nothing but the maintenance cycles extending tunnel.And extend maintenance cycle and can not make it in a maintenance cycle, serve the back production of whole work plane, the prolongation of contrary maintenance cycle makes the height carrying joint add, and workload adds, and maintenance cost does not reduce.
3, the average thickness of the western three-soft seam in Henan is at 3-4m, and after the height 3-3.5m increase of U-shaped canopy, it is highly usually greater than coal seam thickness, and this just makes to occur a large amount of spoil in driving and maintenance process, and ature of coal does not ensure.
4, due to the excessive height of U-shaped canopy, make its back timber erection difficulty in work progress, labour intensity is large, and driving speed is slow, and easily security incident occurs.
Although 5, U-shaped canopy is won in succession connection, due to cannot strut be settled between its canopy and canopy, so the canopy under pressure between canopy and canopy is apart from not being guaranteed, there is distortion, even occur U-shaped steel twisted phenomena.
Though 6, U-shaped canopy is elasticity supporting, occur not being inconsistent due to the flexibility of its back timber and the flexibility on leg top or the bending length on leg top is inadequate time, usually there is the blue screw tensile phenomenon of card.
7, because U-shaped canopy is arc, its processing needs special installation, and processing is large with maintenance difficulty, needs to get off to backhaul defeated aboveground during maintenance, and time-consumingly take a lot of work, maintenance cost is high.And owing to being arc, be inconvenient to transport and deposit, especially back timber injures foot by a crashing object lifting easy landing in fortune process.
Summary of the invention
The purpose of this utility model is overcome deficiency of the prior art and provide a kind of inverted trapezoidal galianconism open supporting, and this inverted trapezoidal supporting decreases the accident rate of frame, improves the progress of frame, also improves the compressive strength of Liang Peng simultaneously.
The purpose of this utility model is achieved in that
The open supporting of a kind of inverted trapezoidal galianconism, comprise supporting body, described supporting body is made up of the first galianconism, the second galianconism, the 3rd galianconism, the 4th galianconism, the 5th galianconism, the 6th galianconism, the 7th galianconism, it is characterized in that: the first described galianconism, the second galianconism, the 3rd galianconism, the 4th galianconism, head and the tail flexible connection successively between the 5th galianconism and the 6th galianconism;
The first described galianconism, the second galianconism, the 4th galianconism and the 6th galianconism horizontal arrangement, the first described galianconism, the second galianconism and the 6th galianconism are tunnel face support, the 4th described galianconism is the supporting of bottom surface, tunnel, and the 3rd described galianconism and the 5th galianconism are the supporting of side, tunnel;
The first described galianconism, the second galianconism and the 6th galianconism length summation are greater than the length of the 4th galianconism.
Based on the above, between the first galianconism of described horizontal arrangement and the 4th galianconism, be provided with vertical column.
Based on the above, the two ends up and down of described vertical column are docked with the centre of the first galianconism and the 4th galianconism respectively.
Based on the above, described supporting body also comprises the 8th galianconism and the 9th galianconism, one end of the 8th described galianconism is fixed on the centre of the 3rd galianconism, the other end is fixed on the docking site of the first galianconism and the second galianconism, one end of the 9th described galianconism is fixed on the centre of the 5th galianconism, and the other end is fixed on the docking site of the first galianconism and the 6th galianconism.
Based on the above, the 8th described galianconism, the length of the 9th galianconism are equal.
Based on the above, the length of the second described galianconism, the 6th galianconism is equal, and the 3rd described galianconism, the length of the 5th galianconism are equal, and the length of the first described galianconism and the 4th galianconism is equal.
Based on the above, the first described galianconism by the mode of grafting respectively with between the second galianconism, the 6th galianconism docks, be all connected by the mode of having a common boundary between the second described galianconism with the 3rd galianconism, between the 5th galianconism with the 6th galianconism, between the 3rd galianconism with the 4th galianconism, between the 4th galianconism with the 5th galianconism.
The utility model has following advantage:
1, the semi-enclosed support that this support process adopts inverted trapezoidal to become trapezoid canopy or U-shaped canopy is closed type supporting, six arms are line style arm beam, two ends adopt grafting or articulated manner to connect, and during by top, the end, side pressure, pressure can be discharged by the extruding of coal in space between curb girder, grade beam.This support pattern structure is simple, is convenient to erection, easy to maintenance, reusable.
2, six square supportings two legs of trapezoid canopy bow two legs that are vertical or U-shaped canopy uprightly become face upward vertical, side pressure problem is solved by extruding of coal when side need not be carried on the back, it makes the pressurized of lateral wall decrease more than 90%, make curb girder only bear friction pressure when coal is extruded, improve compressive strength.
3, due to the use of the 4th galianconism and curb girder, expand the release area in tunnel, have also been enlarged the bearing area of every frame canopy simultaneously, that is: the suspension column of trapezoidal canopy or U-shaped canopy wears footwear size by 0.2 × 0.2 × 2=0.08 square metre, and presses No. 11 I-beam for mine, ground beam length 3 meters, curb girder is by 2.8 meters of calculating, 8.6 × 0.09=0.774 square metre is nearly 10 times of trapezoidal canopy or U-shaped canopy, with greatly reducing the speed of drum.Tunnel due to ground drum from the coal extruded between canopy or cash by cleaning in time, just can ensure the height in tunnel at any time.Solve the ground, tunnel that trapezoidal canopy and U-shaped canopy cause not in time because of ground drum and maintenance constantly to rise, the problems such as head-room is inadequate.
4, owing to using 1 pillar in the middle of the bottom girder of top, just equal in a disguised form long top bottom girder such as 3m to be become short beam 1.5m, equally, the centre of two curb girders, by oblique beam action, also makes two curb girders become 1.4 meters from 2.8 meters.According to theory calculate, when the beam of same material has 2m to become 1.5m, its pressure that can carry can improve 3.16 times, this with past trapezoidal canopy with the leg of U-shaped more than canopy 2m compared with beam, the pressure-bearing of single canopy is equivalent to 3 canopies in the past, improves the compressive strength of arm beam.
5, the grafting or hinged owing to adopting between arm beam and arm beam, can make arm beam can 180 degree stand up, that is when microbend appears in arm beam, stand up as long as holding arms beam carries out 180 degree, ore deposit just can be utilized to press the deflection of beam of automatic calibration arm, avoiding over arm beam, leg bends post-tensioning to draw the trouble carrying out correcting, decrease the loss of support material simultaneously, decreasing the freight volume of material and the U-shaped canopy of spoilage due to pressure and maintenance can cause very large disposable loss not in time, and the trapezoidal canopy in past causes loss because of bending.Because it is not flexible, this support material is reusable, reduces cost.
6, adopt seamless connectivity back-to-back in design because male and female is hinged, bearing pin and hole realize wide arc gap, so reduce the stressed of bearing pin.Can say that bearing pin does not stress in normal state, only play a connection function.
7, because tunnel can ensure height and section, generally need not carry joint, decrease road maintenance amount, Lower Half only need be cleared up the coal extruded in time, sack bag pine, when pressure causes greatly sack bag, as long as first water filling, is then helped release by the first half.
8, owing to being inverted trapezoidal, so both can cable be laid in the triangle on both sides, can pipeline be set up again, also can fix starting device simultaneously, can also maintenance of equipment space be regarded.Make rectangular tunnel neat, clean, clean and tidy.
9, because all beam columns are straight, material transport, to pile up etc. in convenient and swift, artificial and space can be reduced.Also reduce because transporting the light servere injury accident being inconvenient to cause simultaneously.Particular avoid the shortcoming of U-shaped canopy in transport is deposited.
10, compared with U-shaped canopy tunnel, tunnel step-down becomes below 2.5m from 3.5m is high, reduces the labour intensity of frame canopy, decreases the accident rate of frame canopy, improve progress.
11, because the western three-soft seam in Henan is thin, this supporting reduces head-room, adds width, decrease in driving because of head-room higher than coal seam thickness and carry joint increase spoil amount, ensure that ature of coal.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with specific embodiment, the utility model will be further described.
As shown in Figure 1, the open supporting of a kind of inverted trapezoidal galianconism, comprise supporting body 1, described supporting body 1 is made up of the first galianconism 2, second galianconism 3, the 3rd galianconism 4, the 4th galianconism 5, the 5th galianconism 6, the 6th galianconism 7, the 7th galianconism 8, it is characterized in that: the first described galianconism 2, second galianconism 3, the 3rd galianconism 4, the 4th galianconism 5, head and the tail flexible connection successively between the 5th galianconism 6 and the 6th galianconism 7;
Described the first galianconism 2, second galianconism 3, the 4th galianconism 5 and the 6th galianconism 7 horizontal arrangement, the first described galianconism 2, second galianconism 3 and the 6th galianconism 7 are tunnel face support, the 4th described galianconism 5 is the supporting of bottom surface, tunnel, and the 3rd described galianconism 4 and the 5th galianconism 6 are the supporting of side, tunnel;
The first described galianconism 2, second galianconism 3 and the 6th galianconism 7 length summation are greater than the length of the 4th galianconism 5.
Based on the above, between the first galianconism 2 of described horizontal arrangement and the 4th galianconism 5, be provided with vertical column 8.
Based on the above, the two ends up and down of described vertical column 8 are docked with the centre of the first galianconism 2 and the 4th galianconism 5 respectively.
Based on the above, described supporting body 1 also comprises the 8th galianconism 9 and the 9th galianconism 10, one end of the 8th described galianconism 9 is fixed on the centre of the 3rd galianconism 4, the other end is fixed on the docking site of the first galianconism 2 and the second galianconism 3, one end of the 9th described galianconism 10 is fixed on the centre of the 5th galianconism 6, and the other end is fixed on the docking site of the first galianconism 2 and the 6th galianconism 7.
Shown in above, the 8th described galianconism 9, the length of the 9th galianconism 10 are equal.
Based on the above, the second described galianconism 3, the length of the 6th galianconism 7 are equal, and the 3rd described galianconism 4, the length of the 5th galianconism 6 are equal, and the first described galianconism 2 is equal with the length of the 4th galianconism 5.
Based on the above, the first described galianconism 2 by the mode of grafting respectively with between the second galianconism 3, the 6th galianconism 7 docks, the second described galianconism 3 is with between the 3rd galianconism 4, be all connected by the mode of having a common boundary between the 5th galianconism 6 with the 6th galianconism 7, between the 3rd galianconism 4 with the 4th galianconism 5, between the 4th galianconism 5 with the 5th galianconism 6.
Its concrete construction technology is as follows:
1) construction pre-treatment, first will treat construction tunnel coal and rock and carry out pre-water filling in advance, with abundant cementing coal body, make coal body be cemented to block, and therefore stream coal phenomenon can not occur, and prevents side during replacement supporting from pushing up stream coal and causes roof fall to block up wind accident;
2) support installing, comprises the following steps:
1. the first galianconism is laid: choose nest according to the head-room designed in advance and canopy apart from having drawn beam, by the method for steel ruler measurer and suspension plumb line, calibration is carried out to heights of roofs and the hitch degree of depth, forestope is moved forward to and requires position, by operating personnel, the first galianconism is propped up to forestope top, according to the canopy designed in advance apart from the first galianconism is put fix in position, alignd with center line in roadway in the center of the first galianconism, and by level gauge calibration first galianconism levelness, then carry out protecting top according to construction reference with bamboo basketry, rafter bar;
2. the 4th galianconism is placed: before laying the 4th galianconism, will carry out roadway floor bottomed smooth, correct with level gauge, after 4th galianconism is placed, guarantee that the 4th galianconism lays level, then live to support at the special monomer of the first galianconism and the 4th galianconism two ends, complete and become lane for the first time.
3. the second galianconism, the 6th galianconism is laid: draw according to the angle designed in advance and length and dig tunnel two upper lateral part, and make the second galianconism, the 6th galianconism and the first galianconism grafting and keep straight, side is visited beam reach and is held the second galianconism, the 6th galianconism, then carries out protecting top according to construction reference with bamboo basketry, rafter bar;
4. lay the 3rd galianconism, the 5th galianconism: draw according to the angle designed in advance and length and dig both sides, tunnel, and make the 3rd galianconism, the 5th galianconism connects with the second galianconism, the 6th galianconism articulated elements respectively; Then the 4th galianconism is made to connect with the 3rd galianconism, the 5th galianconism articulated elements;
5. vertical column is set: according to designing requirement in advance, vertical column sets in the middle part of the first galianconism and the 4th galianconism, plumb line to be hung when setting correct, guarantee that vertical uprights vertical is in the first galianconism and the 4th galianconism, then vertical column upper end timber wedge jam-pack;
6. win in succession: help bottom side rail upper end two and connect and win in succession, and make it fixing dead with curb girder.Strut made by back timber between every two frame canopies, curb girder position Φ >=60mm round log, each three road struts of top and bottom, and each twice of two curb girders, must not loosen, and so far completes roadway support erection.
Cost comparisons:
Illustrate for precious jade ridge coal industry:
Repair site operation according to down-hole driving and expansion in recent years and grasp situation, be now described as follows:
1, unit price is tunneled: excavated section 14.4m2 net section 14.4m2
Full coal road: labour cost 2662.5 yuan/m, cost of materials 3706.15 yuan/m
Half coal road: labour cost 3595.7 yuan/m, cost of materials 3723.61 yuan/m
2, unit price is repaiied in expansion: excavated section 14.4m2 net section 14.4m2
Full coal road: labour cost 1594.9 yuan/m, cost of materials 1698.47 yuan/m
Half coal road: labour cost 2103.4 yuan/m, cost of materials 1708.97 yuan/m
3, road maintenance rate: U-shaped steel supporting
(1) dynamic pressure area: 1 time/month
(2) Cai Mianliang lane: expand the 5-7 month and repair 1 time
(3) static pressure district: expand the 12-15 month and repair 1 time
4, U-shaped steel scrappage:
Back timber is all scrapped, both sides leg: every 10m scraps 4
Beam and the worthwhile scrappage of leg: 42%
After improvement, tunnel section design is 8m2.Then:
Calculate with coal road, labour cost can be saved:
2662.5 yuan/m × 45%=1198 unit/m
Pay lane up and down and can save driving expense 1198 yuan/m × 1000m=119.8 ten thousand yuan.
Pay lane up and down and repair calculating by 2 years 4 times expansions, labour cost is by original 50%:
1594.9 × 50%=797.45 unit/m
Tunnel length presses 1000m, and maintenance length presses 500m, then work plane viability maintenance cost can be saved:
500 × 797.45 × 4=159.49 ten thousand yuan
Because of in maintenance, there is not consumption and can save (can comprise the easy-consumed goods of low value completely in 797.45 yuan/m) in support material, then cost of materials can be saved:
500 × 1698.5 × 4=335.6 ten thousand yuan.
Then add up to saving:
119.8+159.49+335.6=614.9 ten thousand yuan, does not calculate this support material in addition and can reuse the expense saved and support material and enter the expense that well and waste material go out well.
For Xing Cun coal industry
The each work plane in its down-hole need tunnel a centralized rock roadway, and its cost is 10,000 yuan every meter, is 1000 meters of calculating, can saves 1,000 ten thousand yuan year according to year working face extraction length.Because its coal road still needs pick, it can offset the day-to-day maintenance of six square supportings completely every the expense that 150 meters of drivings cut eye.And because this supporting is disposable input substantially, can reuse, the utilization in its later stage does not have support material early investment.
Claims (7)
1. the open supporting of inverted trapezoidal galianconism, comprise supporting body (1), described supporting body (1) is made up of the first galianconism (2), the second galianconism (3), the 3rd galianconism (4), the 4th galianconism (5), the 5th galianconism (6), the 6th galianconism (7), the 7th galianconism (8), it is characterized in that: described the first galianconism (2), the second galianconism (3), the 3rd galianconism (4), the 4th galianconism (5), head and the tail flexible connection successively between the 5th galianconism (6) and the 6th galianconism (7);
Described the first galianconism (2), the second galianconism (3), the 4th galianconism (5) and the 6th galianconism (7) horizontal arrangement, described the first galianconism (2), the second galianconism (3) and the 6th galianconism (7) are tunnel face support, the 4th described galianconism (5) is the supporting of bottom surface, tunnel, and the 3rd described galianconism (4) and the 5th galianconism (6) are the supporting of side, tunnel;
Described the first galianconism (2), the second galianconism (3) and the 6th galianconism (7) length summation are greater than the length of the 4th galianconism (5).
2. the open supporting of a kind of inverted trapezoidal galianconism according to claim 1, is characterized in that: be provided with vertical column (8) between first galianconism (2) of described horizontal arrangement and the 4th galianconism (5).
3. the open supporting of a kind of inverted trapezoidal galianconism according to claim 2, is characterized in that: the two ends up and down of described vertical column (8) are docked with the centre of the first galianconism (2) and the 4th galianconism (5) respectively.
4. the open supporting of a kind of inverted trapezoidal galianconism according to claim 1, it is characterized in that: described supporting body (1) also comprises the 8th galianconism (9) and the 9th galianconism (10), one end of the 8th described galianconism (9) is fixed on the centre of the 3rd galianconism (4), the other end is fixed on the docking site of the first galianconism (2) and the second galianconism (3), one end of the 9th described galianconism (10) is fixed on the centre of the 5th galianconism (6), and the other end is fixed on the docking site of the first galianconism (2) and the 6th galianconism (7).
5. the open supporting of a kind of inverted trapezoidal galianconism according to claim 4, is characterized in that: the 8th described galianconism (9), the length of the 9th galianconism (10) are equal.
6. the open supporting of a kind of inverted trapezoidal galianconism according to claim 1, it is characterized in that: the length of described the second galianconism (3), the 6th galianconism (7) is equal, the 3rd described galianconism (4), the length of the 5th galianconism (6) are equal, and the length of described the first galianconism (2) and the 4th galianconism (5) is equal.
7. the open supporting of a kind of inverted trapezoidal galianconism according to claim 1, it is characterized in that: described the first galianconism (2) by the mode of grafting respectively with between the second galianconism (3), the 6th galianconism (7) docks, be all connected by the mode of having a common boundary between described the second galianconism (3) with the 3rd galianconism (4), between the 5th galianconism (6) with the 6th galianconism (7), between the 3rd galianconism (4) with the 4th galianconism (5), between the 4th galianconism (5) with the 5th galianconism (6).
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