CN109113745A - A method of go down the hill to construct using fully-mechanized digging machine progress high inclination-angle big cross section and cuts eye - Google Patents
A method of go down the hill to construct using fully-mechanized digging machine progress high inclination-angle big cross section and cuts eye Download PDFInfo
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- 238000005520 cutting process Methods 0.000 claims abstract description 90
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- 238000010276 construction Methods 0.000 claims abstract description 46
- 230000005641 tunneling Effects 0.000 claims abstract description 14
- 238000007747 plating Methods 0.000 claims abstract description 10
- 210000004283 incisor Anatomy 0.000 claims abstract description 8
- 238000013461 design Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 7
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 4
- 238000010408 sweeping Methods 0.000 claims description 3
- 230000032258 transport Effects 0.000 claims description 3
- 238000005065 mining Methods 0.000 abstract description 2
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- 238000004519 manufacturing process Methods 0.000 description 6
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/11—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
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Abstract
A method of the construction of going down the hill of high inclination-angle big cross section is carried out using fully-mechanized digging machine and cuts eye, method: one, a tunnel is cut in design: construct cut a tunnel from top to bottom using big gun pick mode, cuts that a tunnel is 4 meters wide, 2.8 meters high, inclination angle is 30 °~40 °；Two, cut a tunnel equipment arrangement: fully-mechanized digging machine is arranged in the top for cutting a tunnel, pulling winch and haul winch be arranged at in the host chamber for cutting the air return lane that tunnel top communicates, pulling winch is connect by wirerope with movable pulley, and movable pulley is connected by the tail portion of anchor chain and fully-mechanized digging machine；Three, fully-mechanized digging machine coal cutting is to tunneling boring；Four, shipment: break up coal is transported on the third transporter in air return lane by first conveyor, second conveyor, is transported break up coal by third transporter；Five, anchor pole, anchor cable and close plating net are set；Six, incisor canal of going down the hill is fully completed: being repeated Step 3: four, five, until construction is cut eye and is fully completed.The present invention is used for coal mining.
Description
Technical field
The present invention relates to a kind of coal mining technologies, and in particular to a kind of to be gone down the hill using fully-mechanized digging machine progress high inclination-angle big cross section
The method that eye is cut in construction.
Background technique
It is upper mountain gun pick mode (tunneling from lower to upper) that existing headwork surface construction, which cuts eye all, sees Fig. 4, raise advance
There are three aspects for 9 stress of working face:
1, the pressure to be born of rear Lagging support sky top section CD: the top component C1 of top coal body gravity G1 is blown out.
2, the lower thrust to be born of working face 9: the component T2 that meets head on of front coal body gravity G2.
3, the pressure to be born of the top of working face 9: the coal body gravity G on D point top.
Generally upper mountain gun pick mode is constructed discharge big gun after, the Lagging support sky top section CD of advance of working cycle, is normally 30 minutes
Left and right supporting is complete, softens if working face 9 meets structural fault coal body, under the effect of the above three aspects stress, then inevitably sends out
It is raw advanced to take out to emit to form big gun pick and go up a hill advanced Collapsed zone 20 (phantom line segments region), then 9 (DE of Lagging support sky top section CD and working face
Section) it has not existed, not only influencing progress, there is also skies to push up security risk, while increasing hidden danger processing cost.
It is slow that it can be seen that a mode is cut in existing construction, there are progresses, face roof often occurs and coal body of meeting head on is easy
It is advanced to take out leakage, cause very big security risk and support cost.As present coal mine machinery recovery percent improves, working face extraction
Period, short speed was fast, it is desirable that production connecting is compact not to be interrupted, thus driving speed is to restrict production to connect stable key link.
Summary of the invention
The present invention is to solve existing tunneling construction from lower to upper and cut a mode, and it is slow that there are progresses, face roof
And coal body of meeting head on easily takes out leakage, the problem of causing very big security risk in advance, and provide and a kind of utilize fully-mechanized digging machine progress high inclination-angle
Big cross section go down the hill construction cut eye method.
It is of the invention it is a kind of carry out high inclination-angle big cross section using fully-mechanized digging machine and go down the hill the method that construction cuts eye, the method is logical
Cross following steps realization:
Step 1: a tunnel is cut in design: being constructed from top to bottom 15 meters using big gun pick mode and cut a tunnel, cut the width in tunnel
Degree is 4 meters, to cut the height in tunnel be 2.8 meters, and the inclination angle for cutting a tunnel is 30 °~40 °, and support pattern uses anchor rete cord branch
Shield, the bottom for cutting a tunnel is bottom plate；
Step 2: cutting a tunnel equipment arrangement: fully-mechanized digging machine is arranged in the top for cutting a tunnel, pulling winch and haul winch
It is arranged at in the host chamber for cutting the air return lane that tunnel top communicates, one end of wirerope is fixed on the rolling of pulling winch
On cylinder, around being fixed on the pedestal of pulling winch after movable pulley, one end of anchor chain is connect the other end of wirerope with movable pulley,
The other end of anchor chain and the tail portion of fully-mechanized digging machine connect, and shovel board is arranged below the cutting units of fully-mechanized digging machine front end, shovel board, the first transport
Machine, second conveyor are sequentially arranged from front to back, and second conveyor is laid on bottom plate；
Step 3: fully-mechanized digging machine coal cutting is to tunneling boring: driver of roadheader sending moves down instruction, pulling winch starting, fully-mechanized digging machine
Start to walk, the speed of travel of fully-mechanized digging machine is 2 ms/min~5 ms/min, while starting cutting units and make its contraction, utilizes cutting
The flexible stroke in portion drives cutting head to move forward to coal wall, stops cutting units operation, issues signal informing drumman by intercom
So that pulling winch is shut down, while fully-mechanized digging machine stops walking, be again started up cutting units, cutting units drives cutting head slotting to sweep bottom
Coal cutting, after sweeping bottom to slotting, cutting units is withdrawn, and driver of roadheader issues starting pulling winch signal, repeats above-mentioned work
Process is up to cutting head coal cutting to tunneling boring；
Step 4: shipment: the break up coal fallen will be cut in step 3 and be attached on first conveyor by shovel board rake, and passed through
Second conveyor is transported on the third transporter in air return lane, is transported break up coal by third transporter；
Step 5: close plating net and setting anchor pole and anchor cable and carrying out supporting: after shipment, driver of roadheader is by fully-mechanized digging machine
5 meters are stepped back to the intact position of supporting, the cutting units of fully-mechanized digging machine is raised up to the cutting crown to the anchor cable joist at coal body top plate position, together
When fall fully-mechanized digging machine rear portion support to bottom plate, then working face is tapped, to the tunneling boring dug in step 3
Gib is added, close plating net sets anchor pole and anchor cable, so far completes incisor canal of once going down the hill；
Step 6: incisor canal of going down the hill is fully completed: repeating Step 3: Step 4: step 5, cuts eye whole until constructing
It completes.
Compared with the prior art, the invention has the following beneficial effects:
One, method of the invention is to tunnel from top to bottom, carries out construction from top to bottom and cuts eye, working face (9) only has one
A face stress (see Fig. 5): after one advance of working cycle of fully-mechanized digging machine tunneling boring coal cutting, Lagging support sky top section FG is subjected only to top coal body
The top component C1 of gravity G1；Soften even if working face 9 meets structural fault coal body, by the F point and working face of bolt-mesh-anchor support (5)
(9) vertex J forms caving arch (the arc dotted line between FJ) as fulcrum, the caving arch corresponding Lagging support sky top section FJ
Dig advanced Collapsed zone (21) (phantom line segments region) for machine, the machine for tunneling formation from top to bottom digs advanced Collapsed zone (21)
Range digs advanced Collapsed zone (20) range very little of going up a hill compared to the big gun that existing upper mountain gun pick mode is formed, thus utilizes of the invention
Method carries out construction and cuts the phenomenon that eye is not in three aspect stress and a wide range of advanced inbreak.Eye is cut by upper and lower mountain driving
Two aspect mechanical theory analysis (as shown in Figure 4, Figure 5), learn using fully-mechanized digging machine high inclination-angle big cross section construction go down the hill to cut a skill
Art, solve the problems, such as mountain gun pick there are progresses it is slow, a wide range of it is advanced take out leakage influence progress, reach that driving speed is fast, takes out leakage
The small safely controllable purpose of range, so as to avoid security risk, and then improves manufacturing schedule.
Two, method of the invention have mechanization degree height, labor intensity of workers bottom, construction efficiency high, safety coefficient height,
The advantages that saving human resources, working procedure is simple, safety management is simple.
Three, go down the hill to cut eye using method construction of the invention, the drill footage per month 150m/ month, 2500 yuan of rice of linear meter(lin.m.) cost；And it is existing
Most 70 meters/month of drill footage per month of upper mountain gun pick construction of technology, 3000 yuan/meter of linear meter(lin.m.) cost；If upper mountain gun digs mode working face
Occur to take out leakage phenomenon, not only increase processing cost, also will cause 50 meter/month of drill footage per month or so, and claim for eot influences digging
It connects；So incisor canal working efficiency of going down the hill of the invention is the 2~3 of the upper mountain gun pick construction working efficiency of the prior art
Times, while shortening the construction period, greatly alleviates coal mine digging and connect nervous problem.Method recruitment of the invention is few,
Production cost is low, has significant economic benefit.
Four, pulley mechanics principle is pressed, reducing half pulling force, (i.e. the actual tractive force R of pulling winch is that fully-mechanized digging machine glides
The half of power M, i.e. R=M/2, are shown in Fig. 2 and Fig. 6), pass through the sliding force of theoretical calculation fully-mechanized digging machine 1 when fully-mechanized digging machine 1 is lifted up
M (the sum of the downward component of fully-mechanized digging machine gravity G and frictional force are that 304KN is shown in Fig. 6).R=M/2=304KN/2=152KN, traction
The rated drawbar pull F=190KN of winch, F are greater than R, in the case where pulling winch rated drawbar pull F is constant, pulling winch with
Fully-mechanized digging machine starting running part is promoted in the case where being cooperated, and normal hoisting state is fully achieved, without beyond load
It happens.
Five, fully-mechanized digging machine cuts eye because of high inclination-angle construction of going down the hill, and fully-mechanized digging machine fuel tank hind wing fluid pressure line emptying phenomenon occurs, passes through
Fully-mechanized digging machine original annotation hydraulic fluid port is sealed, air inlet is changed to oiling air inlet double-purpose functional, effectively solution emptying phenomenon.
Six, fully-mechanized digging machine (1) and JSDB-19 double speed are mostly used pulling winch (2) mutual cooperation and synchronize traction, because of the lane Qie Yan
Road (6) gradient is big, fully-mechanized digging machine (1) self weight generate sliding force, move up and down it not flexible, thus pulling winch (2) play it is auxiliary
It helps draw and reaches good and promote effect.The tail portion of wirerope (3) and fully-mechanized digging machine (1) passes through one group of movable pulley (36) simultaneously
Pulling winch (2) half tractive force can be reduced by being attached, and fully-mechanized digging machine (1) completely may be used under pulling winch (2) auxiliary traction
It is climbed with free up-and-down reciprocating, reaches advance construction purpose.
Seven, a technology is cut using the construction of going down the hill of fully-mechanized digging machine high inclination-angle big cross section, prevents traditionally mountain gun pick mechanization degree
It is low, that labor intensity of workers is big, working procedure is complicated, there are progresses is slow, often there is face roof and coal body of meeting head on be easily advanced
Take out the disadvantages of security risks such as leakage and priming system management are difficult, labour cost is high.
Eight, a technology is cut using the construction of going down the hill of fully-mechanized digging machine high inclination-angle big cross section, still belongs to the first in Long Mei company or even the whole nation,
It has filled up domestic to go down the hill the blank of fully-mechanized digging machine construction in coal seam high inclination-angle, there is great promotion and application value.
Detailed description of the invention
Fig. 1 is of the invention a kind of to carry out the construction of going down the hill of high inclination-angle big cross section using fully-mechanized digging machine and cut step 2 in the method for eye
Equipment arrangement schematic diagram；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is that (label 28 is air duct, 29 is air hose, 30 is water pipe, air duct 28,29 and of air hose in figure for the H-H view of Fig. 1
Water pipe 30 is that construction is installed immediately when cutting tunnel 6, i.e., when tunnel 6 is cut in construction, with cut a tunnel 6 into
Exhibition, air duct 28, air hose 29 and water pipe 30 are installed with extension)；
Fig. 4 is the schematic diagram of existing 9 three face stress of raise advance working face (label 37 is to emit junk in figure)；
Fig. 5 is that the present invention is gone down the hill the schematic diagrames (in figure label 18 be coal seam) of 9 one face stress of driving face；
Fig. 6 is the 1 force analysis figure of fully-mechanized digging machine that movable pulley 36 is used in being promoted.
Specific embodiment
Specific embodiment 1: illustrating present embodiment in conjunction with FIG. 1 to FIG. 3, present embodiment is through the following steps that reality
Existing:
Step 1: a tunnel 6 is cut in design: being constructed from top to bottom 15 meters using big gun pick mode and cut a tunnel 6 (purpose is to be used for
The equal related matched construction equipment of fully-mechanized digging machine 1 is installed), it is 2.8 meters that the width for cutting a tunnel 6, which is 4 meters, cuts the height in tunnel 6,
The inclined angle alpha for cutting a tunnel 6 is 30 °~40 °, and support pattern uses bolt-mesh-anchor support 5, and the bottom for cutting a tunnel 6 is bottom plate 8；
Bolt-mesh-anchor support includes anchor pole 5-1, metal mesh 5-2, anchor cable 5-3；
Step 2: cutting 6 equipment of tunnel arrangement: fully-mechanized digging machine 1 is arranged in the top for cutting a tunnel 6, pulling winch 2 and haul
Winch 12 is arranged at in the host chamber 32 for cutting the air return lane 10 that 6 top of a tunnel communicates, and pulling winch 2 is comprehensive for drawing
Pick machine 1 moves up and down, and one end of wirerope 3 is fixed on the roller of pulling winch 2, and the other end of wirerope 3 bypasses movable pulley
It is fixed on the pedestal 2-1 of pulling winch 2 after 36 or cuts on the bottom plate 8 in tunnel 6, one end of anchor chain 27 is connect with movable pulley 36,
The other end of anchor chain 27 is connect with the tail portion of fully-mechanized digging machine 1, and shovel board 14 is arranged below 1 front end cutting units 1-2 of fully-mechanized digging machine, shovel board
14, first conveyor 7, second conveyor 4 are sequentially arranged from front to back, and second conveyor 4 is laid on bottom plate 8；
Step 3: 1 coal cutting of fully-mechanized digging machine is to tunneling boring: driver of roadheader and drumman are comprehensive using intercom mutual cooperation
Pick machine driver, which issues, moves down instruction, and pulling winch 2 starts, and fully-mechanized digging machine 1 starts to walk, and the speed of travel of fully-mechanized digging machine 1 is 2 ms/min
Clock~5 m/min, while starting cutting units 1-2 and make its contraction are stretched before stroke drives cutting head 1-2-1 using cutting units 1-2
Coal wall is moved to, cutting units 1-2 operation is stopped, signal is issued by intercom and informs that drumman makes pulling winch 2 shut down,
Fully-mechanized digging machine 1 stops walking simultaneously, is again started up cutting units 1-2, and cutting units 1-2 drives cutting head 1-2-1 slotting to sweep undercut coal, to
After bottom is swept in slotting, cutting units 1-2 is withdrawn, and driver of roadheader issues starting 2 signal of pulling winch, repeats above-mentioned workflow
Up to cutting head 1-2-1 coal cutting to tunneling boring；Fully-mechanized digging machine 1 needs repeatedly cut up and down to working face 9 in this step
Broken coal breakage needs driver of roadheader and drumman good teamwork, signal transmitting in time, and the two must keep synchronous, comprehensive pick
Machine 1 is promoted or the cutting units 1-2 of fully-mechanized digging machine 1 must be made to be in contraction state before transferring, and makes the whole steadily of centre of gravity of fully-mechanized digging machine 1.
Step 4: shipment: the break up coal fallen will be cut in step 3 to be attached on first conveyor 7 by the rake of shovel board 14, and
It is transported on the third transporter 17 in air return lane 10 by second conveyor 4, is transported break up coal by third transporter 17, the
Three transporters 17 are connect with external transportation system；
Step 5: close plating net 5-2 and setting anchor pole 5-1 and anchor cable 5-3 and carrying out supporting: after shipment, fully-mechanized digging machine department
Fully-mechanized digging machine 1 is stepped back 5 meters to the intact position of supporting by machine, and the cutting units 1-2 of fully-mechanized digging machine 1 is raised up to the top cutting head 1-2-1 to coal body
The anchor cable joist 5-3-1 at 11 position of top plate, while the support 26 for falling fully-mechanized digging machine rear portion is twisted to bottom plate 8 with preventing top from drawing
Unexpected loosen of vehicle 2 causes fully-mechanized digging machine 1 to glide suddenly, then taps to working face 9, complete disconnected to what is dug in step 3
Gib is added in face, close plating net 5-2, sets anchor pole 5-1 and anchor cable 5-3, is so far completed incisor canal of once going down the hill, that is, is cut
Coal, shipment, a circulating process for setting anchor pole 5-1 and close plating net 5-2；
Step 6: incisor canal of going down the hill is fully completed: repeating Step 3: Step 4: step 5, cuts eye whole until constructing
It completes.
Tap before referring to that downhole production operation starts, with crowbar, drill rod or pick etc. tap roadway, face roof and
Lateral wall, the method that float stone, delamination are found according to the sound of sending.Tap that the personnel of the certain practical experience of Ying Youyou carry out；
It was found that should stand after having float stone, delamination in the case where the place of safety is prized.Using the tool of pickaxe or drill rod etc, go to tap lane
The rock (or coal body) of management has been exposed through and do not added around road, makes a sound it, it is whether loose inside surrounding rock body to verify
A kind of dynamic, fracture and absciss layer method.
Fully-mechanized digging machine 1, pulling winch 2, second conveyor 4 and third transporter 17 are the prior art.First conveyor 7 is
Fully-mechanized digging machine is from carrying device.
Specific embodiment 2: illustrating that present embodiment, present embodiment are the second fortune in step 2 in conjunction with Fig. 2 and Fig. 3
Defeated machine 4 will cut a tunnel 6 and divide to lift material side A and pedestrian side B, and the setting of haul sledge 16 is lifting material side A, haul sledge
16 are connect by hawser 13 with haul winch 12, and haul sledge 16 cuts ramus ophthalmicus protective material for transporting construction, and pedestrian side B, which is installed, to be pedaled
Ladder 15, pedal ladder 15 to convenient working personnel safety above and below.Other steps are identical with embodiment two.
Application example of the invention:
The high moral coal mine of Hegang branch company of Long Mei group of Heilongjiang Province produces 3000000 tons/year or more per year, by fully-mechanized digging machine of the invention
High inclination-angle big cross section go down the hill construction cut a technology used in the coal mine tunnel 2nd area tested: constructed using fully-mechanized digging machine by air return lane
From top to bottom cut eye, cut a gradient be -36 °,
(1), job location geologic aspects:
This working face is located at two horizontal southern area's 22-1 floor, and machine road, air return lane have been dug to send and finished, and geological condition is clear,
Cut a length 164m；Ocurrence of coal seam is more stable in working face, coal seam average thickness 2.8m, and 36 ° of mean obliquity, coal is QM (gas
Coal)；See in fact from borehole data and tunnel, coal seam directly pushes up 19 for the grey siltstone of 0.80m~0.92m, with quartz, feldspar
Based on；The canescence packsand that old top is 2.16m~9m, based on quartz, feldspar, horizontal bedding；Poundstone 8 is 0.67m
The tufaceous siltstone of~1.16m.This section is influenced without flood.
(2), support pattern and form of labor organization:
1, support pattern selects: the horizontal southern area's 22-1 floor of high moral coal mine driving 2nd areas, 9204 team construction two cuts eye, coal seam
Coal body top plate 11 and bottom plate 8 are more stable, and support pattern uses bolt-mesh-anchor support 5, and 4 meters of lanewidth, lane are 2.8 meters high, and top plate arranges 5
Anchor pole 5-1, two help 1 anchor pole 5-1 of each arrangement, see Fig. 3.
2, form of labor organization: tunnelling is made using daily " class Three ", and per tour eight hours, one class of 7 people of arrangement, main work
As extended chute, overhaul of the equipments, two classes and class Three respectively arrange 10 people, and groundwork is construction of advancing: coal cutting, hangs gold at shipment
Belong to net and 5-2 and set anchor pole 5-1, it is desirable that 2 two classes of 3 circulations, class Three circulations, daily totally 5 circulations, every cyclic advance
1.0m, daily total footage 5m.
(3), winch model and wirerope specification is selected to calculate:
The model of pulling winch 2 is selected in work progress: JSDB-19 Dual-speed multi-purpose lift winch, rated drawbar pull F are
190KN, roll size: 540mm × 560mm；Outer dimension: 3845mm × 1315mm × 1255mm.Motor power (output): 45KW.
3 diameter of wirerope selection: Ф 43mm.
1, hoisting power checks:
Practical fully-mechanized digging machine 1 when being promoted sliding force M (pulling winch 2 by wirerope 3 and movable pulley 36 and fully-mechanized digging machine 1 into
Row connection):
M=[Wg (sinQ+f1cosQ)+qLg (sinQ+f2cosQ)]/2=[42000 × 9.8 (sin36 °+0.15 ×
cos36°)+6.553×164×9.8(sin36°+0.5×cos36°)]≈304KN
W --- 36 ° of inclination maximum of steel wire rope end load 42000kg, g --- acceleration of gravity 9.8m/s, Q ---,
F1 --- coefficient of friction takes 0.15 when promoting fully-mechanized digging machine,
Resistance coefficient takes 0.5 to f2 --- wirerope in operation,
Q --- wirerope linear mass 6.553kg/m L --- cuts a plagioclase=164m
Wire-rope safety factor K=N (the minimum total Fracture Force of wirerope)/M.
: 2, judge:
As shown in fig. 6, M is 1 sliding force of fully-mechanized digging machine, P is 1 vertical base plate pressure of fully-mechanized digging machine, and G is 1 gravity of fully-mechanized digging machine, gravity
The sum of G downward component and frictional force are about 304KN, and R is the practical tractive force of pulling winch 2；In the feelings using movable pulley 36
Under condition, R=M/2=304KN/2=152KN, F are the rated drawbar pull of pulling winch 2, due to F=190KN, are slided using dynamic
In the case of wheel, R=M/2=304KN/2=152KN, therefore F > R,
K (wire-rope safety factor)=118500kg (43mm aggregate breaking force) × 9.8kg/N/151020N=7.69
> 6.5
Pulling winch 2 and selection wirerope 3 meet calculating and require (attached fully-mechanized digging machine force analysis Fig. 6).
To sum up described in 1,2 and Fig. 6, the rated drawbar pull F of pulling winch 2 is 190KN, and the sliding force M of fully-mechanized digging machine 1 is
304KN, it can thus be appreciated that: the tractive force F of pulling winch 2 is greater than the practical tractive force R (as F > M/2) of pulling winch 2.
(4), tunnel equipment arrangement and Specific construction technique:
1, tunnel equipment is arranged:
Design cut a tunnel 6 be arranged on poundstone 8, be 4 meters wide, 2.8 meters high, length according to practical geological conditions and
It is fixed；Fully-mechanized digging machine 1, which is arranged in, cuts 6 top of a tunnel, pulling winch 2 and haul winch using 15 meters that big gun pick mode has been constructed in advance
12 be arranged at in the host chamber 32 for cutting the air return lane 10 that 6 top of a tunnel communicates, and pulling winch 2 pass through wirerope 3
It is connect with the movable pulley 36 on fully-mechanized digging machine 1, pulling winch 2 drives fully-mechanized digging machine 1 to move up and down, and 40T scratch board conveyor 4 is laid on
It has dug and has sent the cutting on 6 poundstone 8 of a tunnel of part, cut 11 support pattern of coal body top plate in tunnel 6 using bolt-mesh-anchor support 5
(anchor pole 5-1, metal mesh 5-2, anchor cable 5-3)；It lifts material side and has haul sledge 16 1, cut ramus ophthalmicus shield for transporting construction
Material, pedestrian install side pedal it is inferior in terraced 15 convenient working personnel safeties.Specific arrangement relation is shown in Fig. 1 and Fig. 2.
2, Specific construction technique:
" three or eight " duty is used daily, and the extended 40T scratch board conveyor (i.e. second conveyor 4) of one class of groundwork is prolonged
If length meets two classes, class Three's cyclic advance length.Two classes, class Three carry out advance construction.Now by taking two classes of sequences of construction as an example, tool
Body construction sequence is as follows:
(1), worker reaches working face and completes after relieving, and checks supporting, equipment operation and toxic gas in tunnel
It is whether exceeded etc., confirm this class is advanced after safety construct needed for material be transported to hiding in institute 23 recently away from working face 9.
(2), fully-mechanized digging machine 1 prepares coal cutting: ground head stays and sets two people when carrying out coal cutting, one people of driver of roadheader, be responsible for observation and
Nurse 35 1 people of cable of fully-mechanized digging machine 1.Driver of roadheader normal boot-strap opens spray sprinkler dust elimination, is got in touch with by intercom
Square drumman starts 2 slow release wirerope 3 of pulling winch, while starting the downward walking of fully-mechanized digging machine 1, driver of roadheader with
Drumman is conversed using intercom, and sending moves down instruction, and the cutting head 1-2-1 to the cutting units 1-2 on fully-mechanized digging machine 1 is moved forward to
Coal wall, issuing signal by intercom makes pulling winch 2 shut down, while starting cutting units 1-2 and utilizing cutting units 1-2 itself
Flexible stroke carries out cutting head 1-2-1 slotting and sweeps undercut coal, and slotting issues starting 2 signal of pulling winch, comprehensive pick after sweeping bottom
Machine 1 moves forward, and cutting units 1-2 is in contraction state at this time, and cutting units 1-2 moves forward cutting head 1-2-1 to slotting bottom coal wall again
When, issue signal and stop pulling winch 2, starting cutting units 1-2 carry out cutting head 1-2-1 again coal cutting to tunneling boring；Fully-mechanized digging machine 1
It needs repeatedly to carry out cutting and crushing coal breakage up and down to working face 9, needs to dig driver of roadheader and drumman good teamwork, signal
In time, the two must keep synchronous for transmitting, and fully-mechanized digging machine 1 promotes or must start up before transferring the cooperation traction of 1 running part of fully-mechanized digging machine and twists
Vehicle 2 lifts, and reduces the tractive force F of pulling winch 2.
(3), shipment: the cutting head 1-2-1 of 1 cutting units 1-2 of fully-mechanized digging machine is broken to cut the coal fallen, is attached to the by the rake of shovel board 14
It transports on one transporter 7 on second conveyor 4 on the third transporter 17 for transporting to air -return duct 10, is transported by third transporter 17
To outer transportation system, after shipment, fully-mechanized digging machine 1 is stepped back 5 meters to the intact position of supporting, fully-mechanized digging machine cutting by driver of roadheader
Portion 1-2 is lifted, and cutting head 1-2-1 is pushed up to the anchor cable joist 5-3-1 for cutting 6 tunnel coal body top plate 11 of eye, while falling fully-mechanized digging machine
Back support 26 is to the bottom plate 8 for cutting a tunnel 6, to prevent unexpected loosen of top pulling winch 2 from fully-mechanized digging machine 1 being caused to glide suddenly；
Then working face 9 carries out " tapping ", shifting sets gib, close plating net 5-2, sets the processes such as anchor pole 5-1, so far completes
Construction of going down the hill cuts a circulation coal cutting of eye, shipment, close plating net 5-2 and sets the master operations such as anchor pole 5-1, later successively class
Repetitive cycling production process is pushed away, until eye completion is cut in construction.
The main security technical measures in above-mentioned construction:
1, fully-mechanized digging machine 1 is cut in coal cutting, shipment and stops all other work in a tunnel 6, forbid the works such as pedestrian, haul
Make, other be not related to personnel must hide in 23 hiding (cut eye it is every driving 50 meters when, need to pedestrian side lane side construction one hide
Institute is 23).
2,2 position of pulling winch must set a full-time staff and keep an eye on when lifting fully-mechanized digging machine 1, to leading before each class's construction
Draw each component of winch 2 and winch cable 3 carries out maintenance and inspection, discovery winch component wear lacks screw, winch holder earth anchor
It loosens, 3 connecting portion of wirerope loosens, handling in time when the influence winch operation problem such as fracture of wire, corrosion occurs in wirerope 3
Confirm safe rear quasi- construction.
3, it is cut in work progress and sets second conveyor 4 in tunnel 6, because of construction of going down the hill, to prevent under second conveyor 4
Sliding, often prolonging 3 section transporter intermediate channel 4-1, (transporter is formed by connecting by multiple intermediate channel 4-1, the length of every section intermediate channel 4-1
1.5 meters), earth anchor 4-3 need to be set, is connect by iron chains 4-2 with second conveyor 4, second conveyor 4 is locked.
4, cut in 6 work progress of eye and make a call to a newel 24 at interval of 2 meters, and with spillplate and steel mesh 25 by pedestrian under
Goods side separates, and spillplate height is not less than 1.5 meters.Eye is cut at interval of 20 meters of settings, one of net formula check apron 31.
5, forbid personnel to walk when working face 9 is constructed, above construction point, guarantee " forbid above someone's operation of lower section operation,
Forbid operation below someone's operation of top " principle.
Above-mentioned test succeeds and achieves the desired purpose, to illustrate that the method for the present invention has mechanization degree height, work
People's labor intensity, construction efficiency are high, safety coefficient is high, save human resources, and working procedure is simple, in security organization management
The advantages that simpler.
Claims (2)
1. high inclination-angle big cross section is carried out using fully-mechanized digging machine go down the hill the method that construction cuts eye, it is characterised in that: the method is a kind of
It is realized by following steps:
Step 1: a tunnel (6) are cut in design: being constructed from top to bottom 15 meters using big gun pick mode and cut a tunnel (6), cut a tunnel
(6) it is 2.8 meters that width, which is 4 meters, cuts the height in a tunnel (6), and the inclination angle (α) for cutting a tunnel (6) is 30 °~40 °, supporting
Mode uses bolt-mesh-anchor support (5), and the bottom for cutting a tunnel (6) is bottom plate (8)；
Step 2: cutting a tunnel (6) equipment arrangement: fully-mechanized digging machine (1) is arranged in the top for cutting a tunnel (6), pulling winch (2) and
Haul winch (12) is arranged at, wirerope interior with the host chamber (32) for cutting the air return lane (10) that a tunnel (6) top communicates
(3) one end is fixed on the roller of pulling winch (2), and the other end of wirerope (3) leads around being fixed on after movable pulley (36)
Draw on the pedestal (2-1) of winch (2), one end of anchor chain (27) is connect with movable pulley (36), the other end of anchor chain (27) and comprehensive pick
The tail portion of machine (1) connects, and shovel board (14) is arranged below fully-mechanized digging machine (1) front end cutting units (1-2), shovel board (14), the first fortune
Defeated machine (7), second conveyor (4) are sequentially arranged in from front to back below fully-mechanized digging machine (1), and second conveyor (4) is laid on bottom
On plate (8)；
Step 3: fully-mechanized digging machine (1) coal cutting is to tunneling boring: driver of roadheader sending moves down instruction, pulling winch (2) starting, comprehensive pick
Machine (1) starts to walk, and the speed of travel of fully-mechanized digging machine (1) is 2 ms/min~5 ms/min, while starting cutting units (1-2) and make it
It shrinks, drives cutting head (1-2-1) to move forward to coal wall using cutting units (1-2) flexible stroke, stop cutting units (1-2) operation,
Signal is issued by intercom and informs that drumman makes pulling winch (2) shut down, while fully-mechanized digging machine (1) stops walking, then
Secondary starting cutting units (1-2), cutting units (1-2) drives cutting head (1-2-1) slotting to sweep undercut coal, after sweeping bottom to slotting,
Cutting units (1-2) is withdrawn, and driver of roadheader issues starting pulling winch (2) signal, repeats above-mentioned workflow until cutting head
(1-2-1) coal cutting is to tunneling boring；
Step 4: shipment: the break up coal fallen will be cut in step 3 to be attached on first conveyor (7) by shovel board (14) rake, and
It is transported on the third transporter (17) in air return lane (10) by second conveyor (4), will be crushed by third transporter (17)
Coal transports；
Step 5: close plating net (5-2) and setting anchor pole (5-1) and anchor cable (5-3) and carrying out supporting: after shipment, fully-mechanized digging machine
Fully-mechanized digging machine (1) is stepped back 5 meters to the intact position of supporting by driver, and the cutting units (1-2) of fully-mechanized digging machine (1) is raised up to cutting head (1-2-
1) the anchor cable joist (5-3-1) at coal body top plate (11) position is arrived on top, while falling the support (26) at fully-mechanized digging machine rear portion to bottom plate
(8), then working face (9) is tapped, gib, close plating net is added to the tunneling boring dug in step 3
(5-2), anchor pole (5-1) and anchor cable (5-3) are set, so far completes incisor canal of once going down the hill；
Step 6: incisor canal of going down the hill is fully completed: repeating Step 3: Step 4: step 5, until to cut eye all complete for construction
At.
2. it is according to claim 1 it is a kind of using fully-mechanized digging machine carry out high inclination-angle big cross section go down the hill construction cut eye method,
Be characterized in that: in step 2 second conveyor (4) will cut a tunnel (6) be divided into lift material side (A) and pedestrian side (B), haul
Sledge (16) setting is lifting material side (A), and haul sledge (16) is connect by hawser (13) with haul winch (12), pedestrian side
(B) it installs and pedals terraced (15).
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| CN113417693A (en) * | 2021-07-13 | 2021-09-21 | 晋能控股煤业集团同忻煤矿山西有限公司 | Safe migration method for steep slope below mine fully mechanized mining equipment train |
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| CN113428794B (en) * | 2021-07-12 | 2022-09-16 | 济宁矿业集团花园井田资源开发有限公司 | Two fortune frame gliding compensation arrangement |
| CN113417693A (en) * | 2021-07-13 | 2021-09-21 | 晋能控股煤业集团同忻煤矿山西有限公司 | Safe migration method for steep slope below mine fully mechanized mining equipment train |
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