CN102505963B - Stope face roof water pre-drainage construction method - Google Patents
Stope face roof water pre-drainage construction method Download PDFInfo
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Abstract
The invention relates to coal mine underwater treatment technology, in particular to a stope face roof water pre-drainage construction method, which solves the technical problem of treatment of a water-bearing bed on a coal seam of a stope face. As the process of stoping on the stope face includes down stoping firstly and up stoping secondly, stope face roof water is drained in advance through roadways beside the stope face before stoping, a drill site chamber and a water bin are constructed at the lowest position of each of the roadways, two drainage pipelines are paved on each of the roadways, an independent drainage system is utilized, drainage holes are drilled in the drill site chamber towards the stope face roof, and water for drilling is led into the water bin through hoses directly and is drained by the drainage system of the roadways. Since roof water is drained in advance, water inflow during the stoping process is reduced effectively, troubles to production of coal mines due to the roof water are eliminated, affection of flood disaster to production is avoided, a safe and comfortable working environment is provided for the stoping operation, and conditions for stability and high yield of the stope face are created.
Description
Technical field
The present invention relates to coal mine underground water harnessing technology, specially a kind of stope face roof water pre-drainage construction party
Method.
Background technology
In process of coal mining, some regions stope coal seam is frequently encountered water-bearing layer, large working area back production
During, always push up across backwardness, water yield can reach maximum, and the oncoming force be suddenly, make normal production of work surface cause seriously to threaten,
Form big impact to work surface drainage system, particularly go down the hill back production when, retention of excessive fluid easily closelys follow work surface, and harm is more serious, system
About produce.In addition, under this geological conditions, across backwardness, water colour is in canescence on stope old top.Have one through analysis sandstone bottom
Layer aluminum mud stone, also known as Flos persicae mud stone, its aluminum mud stone is in canescence and Lycoperdon polymorphum Vitt, soft, fine and smooth, the sliding sense of tool, with kaolinite is
Main, containing a large amount of sparring matter ooliths and thunderstone.Water quality is because that Sandstone Water flows through during indirect roof caving extremely
Aluminum rock stratum is caused.Compared with clear water, intractability increases this water, is mainly reflected in: dosage increases, and the quantity of setting sludge increases
Greatly；Water after process is although water quality is limpid, but water surface floating has one layer of cystose impurity；Inclined plate tank liquid medicine mixed zone upper strata
Float substantial amounts of cystose impurity, be difficult to eliminate.
Content of the invention
The present invention is in order to solve the technical problem of the process in the water-bearing layer on stope coal seam, there is provided a kind of back production
The pre- unrestrained construction method of face roof water.
The present invention is realized by technical scheme below, a kind of stope face roof water pre-drainage construction method, work
Face is first to go down the hill to go up a hill afterwards back production, and before working face extraction, the gate road in efforts surface side enters to face roof
Row discharges water processs in advance, and 250-500 rice is often tunneled in tunnel, the lowest part one drill site chamber of construction in tunnel and a sump,
At sump, two water pumps, a normal work are installed, one standby；Then in tunnel laying discharge pipe line twice, drainage system
For independent drainage system, hole to face roof direction construction drainage in drill site chamber, Drilling Water utilizes flexible pipe direct
Import sump, recycle drift dewatering System drainage, water discharge time is not less than 3 months, until single hole water yield is not more than 10m3/
h.
Holing to work surface side is in fan-shaped arrangement, and the boring elevation angle is 30-60 °, and drilling depth exceedes 20 50 meters of sand layers.
It can be seen that the present invention passes through, using unrestrained roof water in advance, to effectively reduce the water yield in exploitation process, break away from
The puzzlement to shaft production for the roof water, relieves flood to the impact producing, is the work that stoping operation provides safety and comfort
Environment, is that the high and stable yields of stope create condition.
Discharge water in advance, current are clean simultaneously, water body need not be carried out with the purified treatment of complexity, can preferably, be directed to
Property ground arrange to prevent and treat water rate and use, save unnecessary engineering and put into.
Brief description
Fig. 1 is the method for the invention roadway layout schematic diagram
Fig. 2 is drill site chamber borehole pattern.
Specific embodiment
My group company head flat Hydrogeological Conditionss comprehensive analysis, being intended to exploit No. three coal seam overlyings and number is k8, k10 sand
Rock water-bearing layer is aqueous larger.After adopting at the beginning of work surface during main roof caving, water yield is big, and the oncoming force suddenly, is easily normally given birth to work surface
Product causes seriously to threaten, and forms big impact to work surface drainage system simultaneously.
And the rich water exceptions area of passing through in surface electric survey exploration data delineation is aqueous abundanter, if not unrestrained in advance, back production
When easily cause Local topography water yield and increase suddenly, particularly when going down the hill mountain region shape back production upwards, harm is bigger.
Old top is adopted across backwardness, the water colour of outflow is in canescence at the beginning of No. three coal stopes.Have through analysis k10 sandstone bottom
One layer of aluminum mud stone, also known as Flos persicae mud stone, its aluminum mud stone is in canescence and Lycoperdon polymorphum Vitt, soft, fine and smooth, and the sliding sense of tool, with kaolinite
Based on, containing a large amount of sparring matter ooliths and thunderstone.Water quality is because that k10 Sandstone Water flows through in indirect infitration process extremely
Aluminum rock stratum is caused.Compared with clear water, intractability increases this water, is mainly reflected in: dosage increases, and the quantity of setting sludge increases
Greatly；Water after process is although water quality is limpid, but water surface floating has one layer of cystose impurity；Inclined plate tank liquid medicine mixed zone upper strata
Float substantial amounts of cystose impurity, be difficult to eliminate.
In order to eliminate this harm, we take following measures:
The flat ore deposit of length 4303 work surface 2 adopts full-seam mining method back production.Return airway lane situation: 4205 lanes 3 supply
Air intake, fortune coal, water supply, draining are used；4206 lanes 1 are for air intake, power supply, feed flow, water supply, haul, draining.
(1), work surface overview:
4303 work surfaces 2 move towards long 599 meters, tilt wide 225 meters, generally high in the south and low in the north, high in the east and low in the west, locally low
Hollow.
4303 work surface 2 exploitation 3# coal seam, positioned at top board 5 bottom, on away from the average 40m of k8 sandstone；Away from k10 sandstone
Average 96m；Layer position is stable, the whole district can adopt.Coal seam thickness 4.60-6.35m, averagely thick 5.86m；Coal roof lithologic is basicly stable.
(2), unrestrained roof water design
1st, select the roof water of 4205 lanes 3 and unrestrained 4303 work surfaces 2 in 4206 lane 1.4205 lanes, 4206 lanes
Often 300 meters about of driving is 30m in low-lying side construction one drill site chamber 4 and capacity3Sump, water inlet pipe and drain pipe install three
Logical.30m3Two 37kw water pumps, a job is installed, one standby at sump.
2nd, the pipeline of d100mm twice is laid in 4205 lanes, and drill site carries out unrestrained water；4206 lane laying d100mm twice
Pipeline, drill site carries out unrestrained water.Drilling Water utilizes water receiving case, aqueduct to import sump, recycles drift dewatering system to drain.
3rd, drilling equipment
Drilling equipment is using zdy 4000 type rig and the rod bit matching.Single orifice maximum waterdrainage amount is 50
m3/ h, generally 20-30 m3/ h, the overall control that discharges water is in 100 m3Within/h.
4th, drilling design
Each drill site 4 is expected three borings 6 of construction, 699 meters of total footage of holing, and design drilling parameter and construction parameter are such as
Under:
Drilling construction parameter
| Boring numbering | Perforate height (m) | Maximum hole depth (m) | Maximum vertical depth (m) | The elevation angle | Azimuth (is spent) |
| 1-1 | 1.5—2.5 | 233 | 150 | +40 | 270.0′0〞 |
| 1-2 | 1.5—2.5 | 233 | 150 | +40 | 225.0′0〞 |
| 1-2 | 1.5—2.5 | 233 | 150 | +40 | 315.0′0〞 |
5th, hole structure
Discharge water 2 meters of boring perforate ф 110 drill bit drilling, under enter the orifice tube of ф 108, and admittedly managed with cement.Then
Creep into 233 meters with ф 73 drill bit.Single hole waterdrainage amount wants maximum to control in 50m3/ h, generally 20-30 m3/h.
According to field condition practice of construction situation it is:
1st, at 230 meters of 4205 lane, drill site Chamber Construction is holed three, and drilling parameter is: 0 ° of 1# hole azimuth, and the elevation angle+
40 °, 125.5 meters of whole hole drilling depth；330 ° of 2# hole azimuth ,+40 ° of the elevation angle, 133.5 meters of whole hole drilling depth；315 ° of 3# hole azimuth, faces upward
+ 40 ° of angle, 132 meters of whole hole drilling depth.
At 4205 1437 meters of lanes, drill site Chamber Construction is holed two, and drilling parameter is: 270 ° of 1# hole azimuth, and the elevation angle+
40 °, 140 meters of whole hole drilling depth；315 ° of 2# hole azimuth ,+40 ° of the elevation angle, 145 meters of whole hole drilling depth.
At 4206 230 meters of lanes, drill site Chamber Construction is holed one, and drilling parameter is: 330 ° of 1# hole azimuth, and the elevation angle+
40 °, 235 meters of whole hole drilling depth.
At 4206 750 meters of lanes, drill site Chamber Construction is holed two, and drilling parameter is: 330 ° of 1# hole azimuth, and the elevation angle+
40 °, 190 meters of whole hole drilling depth；70 ° of 2# hole azimuth ,+40 ° of the elevation angle, 208 meters of whole hole drilling depth.
2nd, single hole water yield situation of change
Hole at 4205 230 meters of lanes and construct in September, 2008, initial water yield 15m of single hole3/ h about, 2008 10
Month in March, 2009 average water yield 10m at this3/ h about, in April, 2009 water yield is gradually reduced to 7m3/ h about, 5--7
Month water yield 2m3/ h about, 3 hole no longer water outlets at this by the end of July.This drill site amounts to the unrestrained water yield about 60,000 m3.
At 4205 1437 meters of lanes, 1# holes and started to discharge water on 2 6th, 2009, initial water yield 15m3/ h about；2# bores
Hole started to discharge water on 2 8th, 2009, initial water yield 10m3/ h about.March August part average 8m of the water yield at this3/ h about,
The unrestrained water yield about 40,000 m before working face extraction3.
Hole at 4206 230 meters of lanes and start to discharge water on December 25th, 2008, initial water yield 15m of single hole3/ h about, 2
Month August part average 10m of the water yield at this3/ h about, the unrestrained water yield about 5.7 ten thousand m before working face extraction3.
At 4206 750 meters of lanes, 1# holes and starts to discharge water on March 18th, 2009, and 2# holes and puts on March 23rd, 2009
Water, initial water yield 16m of single hole3/ h about.6--8 month average 10m3/ h about, at this, the water yield is gradually stablized in 7m afterwards3/ h is left
Right.The unrestrained water yield about 4.8 ten thousand m before working face extraction3.
4303 work surfaces, in August, 2009 part pilot production, before working face extraction, amount to the unrestrained top board water yield about 200,000 m3.
(4), actual back production water yield situation
Other water burst in face amount situations of long flat mine back production are as follows:
By upper table com-parison and analysis it is seen that by implement unrestrained water unrestrained after, gushing during working face extraction can be reduced
The water yield, mitigates water scavenging system pressure, improves safety coefficient.
Front 300 meters of unrestrained, the maximum flooding quantity 100m that do not carry out roof water of 4305 work surfaces3/ h, brings seriously to production
Impact.300 to 1000 meters have carried out the unrestrained water of top board, altogether unrestrained 220,000 m3, during back production, maximum flooding quantity is 40m3/h.Can
See by the unrestrained maximum flooding quantity that can effectively reduce work surface of roof water.
2nd, alleviate the pressure for the treatment of mine drainage, improve economic benefit.
(1), dosage contrast:
Test shows: same process 1l water sample, more multiplex than unrestrained top board water sample 2 milliliters of water sample after work surface main roof caving
Medicinal liquid.
In actual mechanical process, when processing unrestrained roof water, often process 2500 m3Mine water, needs medication 600kg, per tour
Dosing twice, each 100kg.After process main roof caving during water, often process 2500 m3, need medication 900kg, per tour dosing three times,
100kg every time.It can be seen that after process main roof caving during water, the 300kg of many medications daily, according to drug price 2500 yuan of calculating per ton,
Expend 750 yuan more daily, monthly consume 22500 yuan more.
(2), inflow rate of mine water contrast:
Long flat mine water takes sloping plate deposition filtering technique to be processed, and Design Treatment scale is 330m3/ h, down-hole
Norm al discharge rate is 160m3/ h, by planned, autotelic unrestrained water, inflow rate of mine water increases 200--230 m3/h.
If not carrying out unrestrained water, after work surface main roof caving, directly increase the water yield 150 m3/ h, inflow rate of mine water is up to 310 m3/
H, disposal ability, close to saturation, will bring huge pressure to treating mine drainage.
By contrast it is seen that the unrestrained pressure that is effectively reduced treating mine drainage pre- to roof water, improve economic effect
Benefit.
Interpretation of result
1st, to determine the unrestrained water yield how many for drift dewatering ability.When need to accelerate drainage speed, suitably can beat several eyes more
(3～5), link them on same time pipeline.Tunnel overlays discharge pipe line, installs high powered water pump, improves drift dewatering
System.
To conscientious observing water quantity change when the 2nd, discharging water, unrestrained water hole aperture valve is typically without closing, in case bastard coal blocking
Boring causes water, and along drill site, nearby roof fracture flows out or anhydrous illusion.
3rd, the orifice tube in mine unrestrained water drilling hole will be fixed, and orifice tube is reinforced with big chain, prevents orifice tube from coming off.
4th, the supporting near drill site chamber to being strengthened, splashing top board situation of change it is ensured that there being the operation of a safety
Environment.
Claims (1)
1. a kind of stope face roof water pre-drainage construction method it is characterised in that: work surface is first to go down the hill to go up a hill afterwards back production,
Before working face extraction, the gate road in work surface side is discharged water in advance to face roof process, and tunnel is often tunneled
250-500 rice, the lowest part one drill site chamber of construction in tunnel and a sump, install two water pumps at sump, one just
Often work, one standby；Then in tunnel laying discharge pipe line twice, drainage system is independent drainage system, in drill site cave
Interior is introduced directly into sump to the boring of face roof direction construction drainage, Drilling Water using flexible pipe, recycles drift dewatering system
System draining, water discharge time is not less than 3 months, until single hole water yield is not more than 10m3/ h, holing to work surface side is in fan-shaped cloth
Put, the boring elevation angle is 30-60 °, and drilling depth exceedes 20 50 meters of sand layers.
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| CN201110355926.9A CN102505963B (en) | 2011-11-11 | 2011-11-11 | Stope face roof water pre-drainage construction method |
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| CN201110355926.9A CN102505963B (en) | 2011-11-11 | 2011-11-11 | Stope face roof water pre-drainage construction method |
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| CN102505963B true CN102505963B (en) | 2017-02-01 |
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| CN102913280B (en) * | 2012-10-30 | 2014-11-12 | 开滦(集团)有限责任公司东欢坨矿业分公司 | Method for draining roof water in flood mine |
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| CN109458217A (en) * | 2018-11-07 | 2019-03-12 | 陕西南梁矿业有限公司 | A kind of unrestrained water in mine water-bearing layer rationally utilizes device and method |
| CN109681269A (en) * | 2019-01-16 | 2019-04-26 | 内蒙古上海庙矿业有限责任公司 | Soft rocks are lauched-and husky mixing is prominent gushes Prevention Technique method |
| CN110374674B (en) * | 2019-08-07 | 2021-03-19 | 晋能控股煤业集团有限公司 | One-lane multipurpose drainage method for accumulated water in goaf |
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| CN111042861B (en) * | 2019-12-31 | 2021-07-13 | 淮北矿业股份有限公司 | A kind of advanced control method for water damage in working face of downhill roadway in coal mine |
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