CN101100947A

CN101100947A - Lane type hydraulic support for sheltering from sharply slanted coal layer and its mounting, retracting and retreating method

Info

Publication number: CN101100947A
Application number: CNA2007100925750A
Authority: CN
Inventors: 李长生
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-13
Filing date: 2007-08-13
Publication date: 2008-01-09

Abstract

A hydraulic protective bracket of sharp slop coal bed is composed by a top beam, bracket feet, waste rock blocking plate and hydraulic pile. The bracket is supported by two feet and the top beam to block waste rock from gob section. It also includes a hydraulic pile of extension scale of 1.5-6 meters for bracket turning and retracting by using pressure from the gob section. The top beam is paved on the lane way floor, and the bracket feet, waste rock blocking plate and the hydraulic pile are installed in trench.

Description

Lane type hydraulic support for sheltering from sharply slanted coal layer and mounting, retracting and retreating method

[technical field]

The present invention relates to a kind of pure shielding lane type hydraulic support that is mainly used in colliery half-edge coal seam back production supporting, this support is made up of shielding back timber, stent foot, waste rock board, hydraulic prop.The invention still further relates to this support installation, flexible, return the method for removing.

[background technology]

At present some mine is in exploitation 2---be still the splayed shield support back production raw coal of employing during 6 meters medium-thickness seam.Run of mine coal seam is used in the high-dipping of now exploiting as heavy coal self-sufficient and strategically located region mining company ore grinding The back production supporting is still the splayed shield support.This support is from having come out existing nearly 30 years so far history, basic identical from initial wooden plate's support its essence of splayed support till now, just former flat bracket is one section wooden beam, present splayed support is with a segment type steel a bit of inclination shaped steel to be welded at its two ends, connects and composes whole flat board or splayed shield support at stope with steel cable; The length of this support is the supporting width of this support just, is to determine according to the comprehensive condition of this coal seam minimax thickness.This support is just fixing in the dust once making its geometry, and the length of self can not be stretched.In exploitation process, coal reduces the rate of extraction but also kowtowing appears in this support easily when coal seam thickness not only will be lost during greater than this support, just the rack plate end cap is on rib, this moment is not enough or staff's misoperation as the cunette degree of depth, dodge not as good as security incident will take place, when being easy to generate to a certain degree the time less than this support, coal seam thickness sticks up pin, this top board exposes and does not obtain good supporting, therefore, very easily produce inbreak, human casualty accident happens occasionally, even support reverses, brachymemma support etc. also happens occasionally, and influence produces normally carries out.

The application number that I design is 200500106089 the flexible shield support of half-edge coal seam room formula, this support is a kind of brace type shield support, by this machinery or hydraulically extensible pillar to the top, base plate directly plays a supportive role, so the size of the flexible scope of this support is by the size decision of this telescopic prop stroke, and the size of this stroke is by the minimum length decision of the cylinder body of this telescopic prop, and the minimum length of this cylinder body is by the decision of the minimum thickness in this coal seam, therefore the minimum length of this cylinder body limits this inner prop, center pillar, the stroke of post alive or lengthening section, therefore this by machinery or hydraulically extensible pillar to the top, the scope of application of the direct passive shield support of base plate is restricted, and does not just reach the flexible scope more than 3 times as 1.5-6 rice.

[summary of the invention]

The technical problem to be solved in the present invention provides the tripartite common supporting erecting dense individual props spoil of back timber shelter that a kind of half-edge coal seam top, mount holder pin formula shelter and shielding back timber and false top are formed, tripartite totally-enclosed and pure shielding lane type hydraulic support with flexible scope more than 3 times such as 1.5-6 rice.The technical problem to be solved in the present invention provides a kind of minimizing and lays lane height, width, is the mounting method of the lane type hydraulic support for sheltering from sharply slanted coal layer of 1.5-6 rice with as 2.8 meters tunnel flexible scope being installed just.The technical problem to be solved in the present invention provides a kind of telescopic method that utilizes goaf pressure to implement lane type hydraulic support for sheltering from sharply slanted coal layer.The technical problem to be solved in the present invention provides a kind of method of removing of returning of lane type hydraulic support for sheltering from sharply slanted coal layer.

Be to realize half-edge coal seam top, mount holder pin formula shelter and the tripartite common supporting erecting dense individual props spoil of shielding back timber, tripartite totally-enclosed and in exploitation process, can utilize goaf pressure to rotate that flexible top, the base plate that will just expose keeps off the goaf and to top, the base plate direct purpose of the pure shielding lane type hydraulic support of the big flexible scope more than 3 times such as the passive 1.5-6 of having rice not.Pure shielding lane type hydraulic support of the present invention is made up of shielding back timber, stent foot, waste rock board, hydraulic prop.The caving shield of this support is a kind of case structure, and there is 3-4 two sides to being fixedly coupled seat, and there is garden shape blend stop at the back side; The stent foot of this support is a kind of case structure, also is the fuel tank of hydraulic prop simultaneously, and two sides have 4 pairs to be fixedly coupled seat, and there is Connection Block, the connection hydraulic fluid port of fixing hydraulic prop in the front; The waste rock board of this support is made up of two rectangular steel plates and connector, wherein a side flute profile of another block plate is put in one flat plate steel plate one side, and respectively by connecting and composing the movable waste rock board that can up and downly broaden and narrow down that there is the connector of 4 pairs of parallel two sides a kind of two sides with connector with bearing pin; This box stent foot is positioned at the both sides of this support and all adopts bearing pin to connect and compose a kind of trapezoidal hydraulic support with the two ends of shielding back timber and the two ends of hydraulic prop respectively, it is the garden heart that the box stent foot on these support both sides has with separately connection bearing pin, outwards rotating this support broadens, highly becomes short, inside this support of rotation narrows down and is highly uprised by short, therefore this support flexible is not linear telescopic but a kind of rotation is flexible, and should flexible behavior only could implement in the dropping process of this support; This activity waste rock board connects and composes a kind of stent foot formula shelter and forms one at this stope with bearing pin with the stent foot on trapezoidal hydraulic support both sides respectively and can utilize goaf pressure to rotate flexible top, the base plate that will just expose by top, mount holder pin formula shelter and the tripartite common supporting erecting dense individual props spoil of shielding back timber shelter tripartite totally enclosed during in back production to keep off into the goaf and to the direct passive pure shielding lane type hydraulic support of top, base plate.It is to be determined by the minimum thickness in this coal seam that the minimal support width of this support just screens the length of back timber, when the maximum supporting width of length this support after determining of shielding back timber is to be determined by the length of this stent foot, in the time of must not spending less than 30 as the minimum angle-of-incidence of this support when this support is in Breadth Maximum, the length of stent foot was that 1.5 meters its flexible scopes are 1-3.6 rice when the length of shielding back timber was 1 meter, its flexible scope was a 1-4.5 rice when length of stent foot was 2 meters, the length of stent foot was 2.6 meters when the length of shielding back timber was 1.5 meters, and its flexible scope is a 1.5-6 rice.Can make the pure shielding lane type hydraulic support of various different sizes of this method.

For realizing reducing the height of laying the lane, width is just laid the big telescope support more than 3 times with less laying lane purpose.Pure shielding lane type hydraulic support as the flexible scope of 1.5-6 rice is laid installation with the laying method of splayed support, this width of laying the lane will be more than 2.5 meters or 7 meters, the clear height cushioned layer will be more than 4.6 meters or 3 meters, and the tunnel so big in the coal seam pick is not only dangerous nor real.The mounting method of lane type hydraulic support for sheltering from sharply slanted coal layer of the present invention, comprise the shielding back timber is carried out the laying of the pure shielding lane type hydraulic support of 1.5-6 rice as independent dull and stereotyped shield support in less laying lane, install, step is as follows, at first in laying the lane, dig a cunette, lay the shielding back timber then above the cunette, screen then and lay false top above the back timber, bed course, after caving work is finished, enter and carry out the second step installation work in the cunette, its step is as follows, across pitch will screen back timber top board end to hold and with column the joist two ends are propped up with joist, the roof timbering pin is installed then, use the same method then the mount holder pin is installed, then on the top, between the mount holder pin hydraulic prop is installed, is withdrawn from column then, joist is installed the top, movable waste rock board between the mount holder pin, hydraulically-controlled one-way valve, oil filter, the manual safety valve.

For implementing the purpose that lane type hydraulic support for sheltering from sharply slanted coal layer utilizes goaf pressure to stretch.The telescopic method of lane type hydraulic support for sheltering from sharply slanted coal layer of the present invention, when this support need stretch out when broadening and the inclined degree of this stent foot not enough just the pressure in goaf this stent foot also do not formed enough utilize the pressure in goaf to implement it by the effect of lever when pedaling power to stretch out, its step is as follows, is the garden heart with the lever diagonal brace in the lower end of this stent foot and with the leftover bits and pieces of this lever, under the effect of goaf pressure empty this support being adopted on the leftover bits and pieces limit of this stent foot is that the limit falls to stretching out, simultaneously hydraulic prop also stretch out synchronously and under the effect of hydraulically-controlled one-way valve this hydraulic prop can not withdraw automatically; The width that uses the same method then and the another side stent foot is also extend out to need can be not after goaf pressure forms the enough power of pedaling to this support directly utilize this to pedal power by the effect of lever yet and implements to stretch out; When this support need bounce back, because of what position no matter the width of this support be in, the frictional resistance that the downforce in its goaf produces top, base plate greater than the power of pedaling of this stent foot all the time, this stent foot of way to cycle oil that only need open the manual safety valve this moment are promptly wiped the top retraction that falls.

Pure shielding lane type hydraulic support of the present invention return the method for removing, comprise the steps, this support draws the stent foot on both sides in make above the shelter of both sides spoil gradually and is kept off above the shielding back timber near terminal line the time, when the both sides stent foot all draws this support in and is in the narrowest position, the roof timbering pin will be close to top board, the mount holder pin also will be close to base plate or complete rib, withdraw from hydraulically-controlled one-way valve then, oil filter, the manual safety valve, withdraw from the top then, movable waste rock board between the mount holder pin, the support that falls then rests on the oblique volumn supporting false jack rafter beam, the shielding back timber rests on the across pitch wooden frame, withdraw from hydraulic prop and top then, the mount holder pin is removed the shielding back timber at last.

Lane type hydraulic support for sheltering from sharply slanted coal layer of the present invention, not only have bigger excavation, good ventilation condition, but also the condition of strong safety guarantee and normal cyclic operation is provided in back timber of stope formation, top board, the tripartite totally enclosed shielding of base plate tunnel.Lane type hydraulic support for sheltering from sharply slanted coal layer of the present invention is by top, mount holder pin formula shelter and shielding back timber, the tripartite reasonable support pattern of supporting erecting dense individual props spoil jointly of shelter, simplify the structure with respect to this coal seam support shield type or similar hydraulic support, changed force-bearing situation, improved supporting intensity, reduced the manufacturing technology requirement, thereby reduced manufacturing cost, and have greatly flexible scope such as 1-4.5 rice, 1.5-6 rice and directly improve the rate of extraction, increase the back production benefit.The mounting method of lane type hydraulic support for sheltering from sharply slanted coal layer of the present invention, reduce the high width of laying the lane, as laying the pure shielding hydraulic support that flexible scope is a 1.5-6 rice etc. is installed, has not only been improved the security reliability of laying, caving but also improved laying progress, productivity effect, also saved manpower and materials with 2.8 meters tunnel.Lane type hydraulic support for sheltering from sharply slanted coal layer of the present invention utilizes the pressure in goaf to implement flexible method, saved the initial investment of concentrated hydraulic power unit and auxiliary hydraulic pressure facility, thereby the manpower and materials of safeguarding that reach have in use also reduced use cost, and flexible effect is identical.This lane type hydraulic support for sheltering from sharply slanted coal layer has also been created supporting condition for the mechanization coal breakage.

[description of drawings]

The front view of lane type hydraulic support for sheltering from sharply slanted coal layer shown in Figure 1.

The movable waste rock board schematic diagram of this pure shielding lane type hydraulic support shown in Figure 2.

The shielding back timber of this pure shielding lane type hydraulic support shown in Figure 3 is the laying schematic diagram above the cunette in laying the lane.

Shown in Figure 4 is along A-A line sectional view among Fig. 3, reflects the connection between the shielding back timber of this pure shielding lane type hydraulic support.

The installation sectional schematic diagram of this pure shielding lane type hydraulic support shown in Figure 5 in cunette, the position of the installation of reflection joist, column decorating position and top, mount holder pin, hydraulic support, hydraulically-controlled one-way valve, oil filter, manual safety valve.

Shown in Figure 6 is along Fig. 5 B-B line sectional view, reflects joist, column decorating position and the stent foot of this pure shielding lane type hydraulic support across pitch and being connected of movable waste rock board.

This pure shielding lane type hydraulic support shown in Figure 7 utilizes goaf pressure to implement to stretch out schematic diagram by lever.

This pure shielding lane type hydraulic support shown in Figure 8 returns removes sectional schematic diagram, the reflection oblique volumn supporting, shelves the decorating position of wooden frame.

Shown in Figure 9 is along Fig. 8 C-C line sectional view, the reflection oblique volumn supporting, shelves the decorating position of wooden frame across pitch.

[specific embodiment]

Fig. 3, shown in Figure 4, at first across pitch excavates a cunette 10 in laying the lane, lays shielding back timber 1 above the cunette, the shielding back timber each other each personal Connection Block 11 by being connected with connector 8 usefulness bearing pins 9; Across pitch is laid wooden frame 11 above the shielding back timber, will stagger one position of these wooden frame 11 horizontal front and rear rows, the length of this wooden frame 11 will cover more than three, and drops on by blend stop 12 and block, be fixed on this wooden frame 11 with unit's nail or garden steel one end below, the other end is screened back timber 1 to block; Lay above the wooden frame 11 then that wire lath 12 basketries are rolled over dustproof thing such as 13 grades and be fixed and constitute whole false the top together with unit's silk, Fig. 5, the trench 10 interior across pitch that enter shown in Figure 6 will screen back timber 1 top board end to hold and with column 16 joist 15 two ends are propped up with joist 15, roof timbering pin 2 its leftover bits and piecess are installed then will be placed in 0.2 meter dark pin nest; Use the same method then mount holder pin 2 is installed, hydraulic prop 4 is installed between top, mount holder pin 2 then, withdraw from the movable waste rock board 3 between joist 15, column 16 installation tops, the mount holder pin 2 then; Hydraulically-controlled one-way valve 17, oil filter 18, manual safety valve 19 are installed at last.

Shown in Figure 7, with lever 20 these stent foot 2 lower end diagonal braces are lived, and be the garden heart with the leftover bits and pieces of this lever 20, this stent foot 2 is carried out back production, this moment, stretched out on this limit, whereabouts, stent foot 2 limit under the effect of goaf pressure; The stent foot 2 that also can make another side of using the same method also extend out to the width that needs, when this stent foot 2 stretches out hydraulic prop 4 also stretch out synchronously and the effect at hydraulically-controlled one-way valve under this support can not withdraw automatically; When this support need bounce back, open this support of way to cycle oil of manual safety valve 19 and under the pressure effect of goaf, wipe whereabouts, top retraction.This pure shielding lane type hydraulic support also can use special hydraulic power unit to supply with hydraulic pressure and implement flexible by control system as required.

Fig. 8, shown in Figure 9, this support at first draw the stent foot 2 on these support both sides gradually in this spoil above shelter of support both sides are kept off above the shielding back timber 1 near the back production terminal line time; Stent foot 2 on these support both sides draws that roof timbering pin 2 will touch top board when being in the narrowest position in, and mount holder pin 2 touch base plate or complete rib; Withdraw from hydraulically-controlled one-way valve 17, oil filter 18, manual safety valve 19 then, and then withdraw from movable waste rock board 3 and connector 8 between top, the mount holder pin 2; Across pitch is parallel near shielding back timber 1 and top, mount holder pin 2 spaces then sets up that two oblique volumn supportings 21 will push up, base plate props up, the corresponding oblique volumn supporting 21 that down keeps at a certain distance away again sets up two oblique volumn supportings 22, and then across pitch is shelved 2-3 root wooden frame 23 on oblique volumn supporting 22; The support that falls then rests on the oblique volumn supporting 21 false jack rafter beam 11, and the shielding back timber rests on the wooden frame 23, and then withdraws from hydraulic prop 4 and top, mount holder pin 2, withdraws from shielding back timber 1 at last.

Claims

1, a kind of lane type hydraulic support for sheltering from sharply slanted coal layer, form by shielding back timber (1) stent foot (2) waste rock board (3), hydraulic prop (4), the shielding back timber (1) of this support across pitch in laying the lane constitutes shielding back timber (1) shelter of an integral body with flexibly connecting to connect together in turn, comprise false top, it is characterized in that: described shielding back timber (1) is a kind of case structure, there is 3-4 two sides to fixed connecting base (11), and there is blend stop (12) at the back side; Described stent foot (2) is a kind of case structure, also is the fuel tank of hydraulic prop (4) simultaneously, and two sides have 4 pairs to be fixedly coupled seat (21), and there is Connection Block (22), the hydraulic fluid port (23) of fixing hydraulic prop (4) in the front; Described waste rock board (3) is a flute profile of being put into another block plate (31) one sides by (32) one sides of the one flat plate steel plate in two rectangular steel plates, and respectively by connecting and composing the movable waste rock board (3) that there are 4 pairs of connectors (35) a kind of two sides and can broaden and narrow down with connector (33) with bearing pin (34); The both sides that described stent foot (2) is positioned at this support connect and compose a kind of this stent foot (2) by hydraulic prop (4) control with the two ends of the two ends of described shielding back timber (1) and hydraulic prop (4) with bearing pin (5) and bearing pin (6) respectively and can broaden, narrow down for the garden heart rotates around the bearing pin (5) that is connected separately, and the length of this stent foot is determined the trapezoidal hydraulic support of the maximum supporting width of this support; Described movable waste rock board (3) connects and composes a kind of stent foot (2) formula shelter with the tripartite common supporting erecting dense individual props spoil of shielding back timber (1) shelter and can utilize goaf pressure to rotate flexible top, the base plate that will just expose and keep off into the goaf and to top, the not direct passive lane type hydraulic support for sheltering from sharply slanted coal layer of base plate with the stent foot (3) on all trapezoidal hydraulic support both sides of this work plane with bearing pin (7) respectively.

2, a kind of mounting method of implementing the described lane type hydraulic support for sheltering from sharply slanted coal layer of claim 1, comprise shielding back timber (1) is laid installation as a kind of independent dull and stereotyped shield support in less laying lane, its step is as follows, at first in laying the lane, excavate a cunette (10) and on cunette, lay shielding back timber (1) then at a certain distance, between the shielding back timber (1) connector (8) is installed, on shielding back timber (1), lay false top then, lay bed course (14) above the false top, after caving work is finished, enter then and carry out the second step installation work in the cunette (10), it is characterized in that: also comprise following several steps, across pitch will screen back timber (1) top board end to hold and with column (16) joist (15) two ends are propped up with joist (15), roof timbering pin (2) is installed then, use the same method then mount holder pin (2) is installed, then on the top, hydraulic prop (4) is installed between the mount holder pin (2), installation activity waste rock board (3) between the stent foot (2) separately of these support both sides respectively then, withdraw from column (16) joist (15) at last, hydraulically-controlled one-way valve (17) is installed, oil filter (18), manual safety valve (19).

3, a kind of telescopic method that uses the described half-edge coal seam lane type hydraulic support of claim 2, can adopt the hydraulic pressure of special hydraulic power unit supply and implement the flexible of this support by hydraulic control system, also can utilize the pressure in goaf to implement the flexible of this support, it is characterized in that: carry out according to following step, when this support need stretch out, be that the garden heart is adopted this limit, whereabouts, stent foot limit of sky to the leftover bits and pieces limit of this stent foot (2) and stretched out under the effect of goaf pressure in the lower end of this stent foot (2) and with the leftover bits and pieces of this lever (20) with lever (20) diagonal brace, simultaneously hydraulic prop (4) also stretch out synchronously and under the effect of hydraulically-controlled one-way valve (17) this support can not withdraw automatically, the stent foot (2) that also can make another side that uses the same method extend out to the width that needs; When forming this stent foot (2), the pressure in goaf enough also can directly utilize goaf pressure to implement to stretch out when pedaling power; Only need open the way to cycle oil of manual safety valve (19) when this stent foot (2) needs retraction, this stent foot this moment (2) is promptly wiped under the pressure effect of goaf and is pushed up retraction.

4, a kind of method of removing of returning of using in the claim 1 to 3 any one described half-edge coal seam shielding lane type hydraulic support, be included near shielding back timber (1) and top, across pitch sets up two parallel oblique volumn supportings (21) and will push up in the space of mount holder pin (2), base plate props up, and then down the certain corresponding oblique volumn supporting of distance (21) in interval sets up two oblique volumn supportings (22) again, it is characterized in that: also comprise the steps, this support draws the stent foot (2) on both sides in make above both sides stent foot (2) the formula shelter spoil gradually and is kept off above the shielding back timber (1) near the back production terminal line time, work as the top, when mount holder pin (2) drew this support fully in and is in the narrowest position, roof timbering pin (2) touched top board, the mount holder hem facing is lived base plate or complete rib; Withdraw from hydraulically-controlled one-way valve (17), oil filter (18), manual safety valve (19) then, and then remove top, mount holder pin (2) the movable waste rock board between separately and the connector (8) of shielding back timber (1); The support that falls then rests on the oblique volumn supporting (21) false jack rafter beam (11), and shielding back timber (1) rests on the wooden frame 23, withdraws from hydraulic prop (4) and top, mount holder pin (2) then, withdraws from shielding back timber (1) at last.