CN102505963A - Stope face roof water pre-drainage construction method - Google Patents
Stope face roof water pre-drainage construction method Download PDFInfo
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- CN102505963A CN102505963A CN2011103559269A CN201110355926A CN102505963A CN 102505963 A CN102505963 A CN 102505963A CN 2011103559269 A CN2011103559269 A CN 2011103559269A CN 201110355926 A CN201110355926 A CN 201110355926A CN 102505963 A CN102505963 A CN 102505963A
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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 colliery underground water improvement technology, be specially the preparatory unrestrained job practices of a kind of stope roof water.
Background technology
In the process of coal mining, run into the aquifer through regular meeting on some regional stope coal seam, in the large working area exploitation process; Backwardness is striden on old top, and it is maximum that water yield can reach, and the oncoming force is unexpected; Make the work plane ordinary production cause serious threat, form big impact for the work plane drainage system, when particularly going down the hill back production; Water burst is prone to immediately following work plane, endanger more serious, restriction production.Under this geological conditions, backwardness is striden on the old top of stope in addition, and water colour is canescence.Through analyzing the sandstone bottom layer of aluminum matter mud stone is arranged, claim the peach blossom mud stone again, its aluminium matter mud stone is canescence and grey, and is soft, exquisiteness, and the sliding sense of tool is main with kaolinite, contains a large amount of sparring matter ooliths and thunderstone.Unusually the pelite layer causes water quality because sandstone water is flowed through in indirect roof caving process.This water is compared with clear water, and intractability strengthens, and be mainly reflected in: dosage increases, and the sludge settling amount increases; Water after the processing, though water quality is limpid, water surface is floating to have one deck foam-like impurity; The floating a large amount of foam-like impurity in upper strata, liquid medicine mixed zone, swash plate pond is difficult for eliminating.
Summary of the invention
The present invention provides a kind of stope roof water preparatory unrestrained job practices in order to solve the Treatment Technology problem in the aquifer on the stope coal seam.
The present invention is realized by following technical scheme, the preparatory unrestrained job practices of a kind of stope roof water, and work plane is for going down the hill afterwards to go up a hill back production earlier; Before working face extraction, at the gate road of work work plane side to the face roof processing that discharges water in advance, tunnel every driving 250-500 rice; A lowest part drill site chamber of construction and a sump in the tunnel; Two water pumps are installed at the sump place, an operate as normal, and one is subsequent use; Lay discharge pipe line twice then in the tunnel; Drainage system is drainage system independently; To the boring of face roof direction construction drainage, the boring water conservancy directly imports sump with flexible pipe, utilizes the draining of drift dewatering system again in the drill site chamber; Water discharge time was not less than 3 months, was not more than 10m up to the single hole water yield
3/ h.
Boring is fan-shaped layout to the work plane side, and the boring elevation angle is 30-60 °, and drilling depth surpasses 20-50 meters of sand layers.
It is thus clear that the present invention shifts to an earlier date unrestrained roof water through employing; Effectively reduced the water yield in the exploitation process; Broken away from the puzzlement that roof water is produced mine; Removed the influence of flood, for stoping operation provides the working environment of safety and comfort, for condition has been created in the high and stable yields of stope to producing.
Discharge water in advance simultaneously, current are clean, need not water body is carried out complicated purified treatment, can arrange to prevent and treat water rate usefulness better, targetedly, save unnecessary engineering input.
Description of drawings
Fig. 1 is the method for the invention roadway arrangement sketch map
Fig. 2 is a drill site chamber borehole pattern.
The specific embodiment
My group companyLong flat mineral water literary composition geological conditions analysis-by-synthesis, cover on No. three coal seams of desire exploitation be numbered K8, K10 sandstone aquifer is moisture bigger.When work plane was just adopted the back main roof caving, water yield was big, and the oncoming force is unexpected, was prone to cause serious threat to the work plane ordinary production, formed big impact for simultaneously the work plane drainage system.
And moisture abundanter through the rich water exceptions area of drawing a circle to approve in the ground electrical prospecting data, if not unrestrained in advance, be prone to cause local location water yield to increase suddenly during back production, particularly when going down the hill upwards mountain region shape back production, endanger bigger.
No. three coal stopes are just adopted old top and are striden backwardness, and the water colour of outflow is canescence.Through analyzing K10 sandstone bottom layer of aluminum matter mud stone is arranged, claim the peach blossom mud stone again, its aluminium matter mud stone is canescence and grey, and is soft, exquisiteness, and the sliding sense of tool is main with kaolinite, contains a large amount of sparring matter ooliths and thunderstone.Unusually the pelite layer causes water quality because K10 sandstone water is flowed through in indirect infitration process.This water is compared with clear water, and intractability strengthens, and be mainly reflected in: dosage increases, and the sludge settling amount increases; Water after the processing, though water quality is limpid, water surface is floating to have one deck foam-like impurity; The floating a large amount of foam-like impurity in upper strata, liquid medicine mixed zone, swash plate pond is difficult for eliminating.
In order to eliminate this harm, we take following measure:
III 4303 work planes 2 in long flat ore deposit adopt the back production of full-seam mining method.Work plane crossheading lane situation: 4205 lanes 3 supply air intake, fortune coal, water supply, draining to use; 4206 lanes 1 supply air intake, power supply, feed flow, water supply, haul, draining to use.
(1), work plane overview:
III 4303 work planes 2 move towards long 599 meters, and it is wide 225 meters to tilt, and integral body is high in the south and low in the north, high in the east and low in the west, and are local low-lying.
The 3# coal seam of III 4303 work planes 2 exploitations is positioned at top board 5 bottoms, goes up apart from the average 40m of K8 sandstone; Apart from the average 96m of K10 sandstone; Layer position is stable, the whole district can adopt.The thick 4.60-6.35m in coal seam, average thick 5.86m; Coal roof lithologic is basicly stable.
(2), unrestrained roof water design
1, selects the roof water of III 4205 lanes 3 and III 4206 lanes 1 unrestrained III 4303 work planes 2.About 300 meters in III 4205 lanes, the every driving in III 4206 lanes are 30m at construct a drill site chamber 4 and capacity of low-lying side
3Sump, water inlet pipe and gutter are installed threeway.30m
3The sump place installs two 37KW water pumps, a job, and one is subsequent use.
2, the pipeline of d100mm is twice laid in III 4205 lanes, and drill site carries out unrestrained water; D100mm pipeline is twice laid in III 4206 lanes, and drill site carries out unrestrained water.The boring water conservancy imports sump with water receiving case, aqueduct, utilizes the drift dewatering system to drain again.
3, drilling equipment
Drilling equipment adopts ZDY-4000 type rig and the rod bit that matches.The maximum waterdrainage amount of single orifice is 50 m
3/ h is generally 20-30 m
3/ h, the overall control that discharges water is at 100 m
3In/the h.
4, boring design
Each drill site 4 is estimated three borings 6 of construction, 699 meters of boring total footages, and design data of holes drilled and construction parameter are following:
The drilling construction parameter
<tables num="0001"> <table > <tgroup cols="6"> <colspec colname="c001" colwidth="11%" /> <colspec colname="c002" colwidth="18%" /> <colspec colname="c003" colwidth="15%" /> <colspec colname="c004" colwidth="18%" /> <colspec colname="c005" colwidth="19%" /> <colspec colname="c006" colwidth="16%" /> <tbody > <row > <entry morerows="1">The boring numbering</entry> <entry morerows="1">Perforate height (m)</entry> <entry morerows="1">Maximum hole depth (m)</entry> <entry morerows="1">Maximum vertical depth (m)</entry> <entry morerows="1">The elevation angle</entry> <entry morerows="1">Azimuth (degree)</entry> </row> <row > <entry morerows="1">1-1</entry> <entry morerows="1">1.5—2.5</entry> <entry morerows="1">233</entry> <entry morerows="1">150</entry> <entry morerows="1">+40</entry> <entry morerows="1">270<sup >。</sup></sup>0′0〞</entry> </row> <row > <entry morerows="1">1-2</entry> <entry morerows="1">1.5—2.5</entry> <entry morerows="1">233</entry> <entry morerows="1">150</entry> <entry morerows="1">+40</entry> <entry morerows="1">225<sup >。</sup>0′0〞</entry> </row> <row > <entry morerows="1">1-2</entry> <entry morerows="1">1.5—2.5</entry> <entry morerows="1">233</entry> <entry morerows="1">150</entry> <entry morerows="1">+40</entry> <entry morerows="1">315<sup >。</sup>0′0〞</entry></row></tbody></tgroup></table></tables>
5, hole structure
The boring perforate that discharges water will be crept into 2 meters with Ф 110 drill bits, is lowered to the orifice tube of Ф 108, and manages admittedly with cement.Enter 233 meters with Ф 73 bit drills then.The single hole waterdrainage amount wants maximum control at 50m
3/ h is generally 20-30 m
3/ h.
According to field condition practice of construction situation be:
1,230 meters, III 4205 lanes drill site Chamber Construction boring is three, and data of holes drilled is: 0 ° at azimuth, 1# hole, the elevation angle+40 °, 125.5 meters on whole hole drilling depth; 330 ° at azimuth, 2# hole, the elevation angle+40 °, 133.5 meters on whole hole drilling depth; 315 ° at azimuth, 3# hole, the elevation angle+40 °, 132 meters on whole hole drilling depth.
Two of 1437 meters, III 4205 lanes drill site Chamber Construction borings, data of holes drilled is: 270 ° at azimuth, 1# hole, the elevation angle+40 °, 140 meters on whole hole drilling depth; 315 ° at azimuth, 2# hole, the elevation angle+40 °, 145 meters on whole hole drilling depth.
One of 230 meters, III 4206 lanes drill site Chamber Construction boring, data of holes drilled is: 330 ° at azimuth, 1# hole, the elevation angle+40 °, 235 meters on whole hole drilling depth.
Two of 750 meters, III 4206 lanes drill site Chamber Construction borings, data of holes drilled is: 330 ° at azimuth, 1# hole, the elevation angle+40 °, 190 meters on whole hole drilling depth; 70 ° at azimuth, 2# hole, the elevation angle+40 °, 208 meters on whole hole drilling depth.
2, single hole water yield situation of change
Hole in September, 2008 construction, the initial water yield 15m of single hole in 230 meters, III 4205 lanes
3About/h, year March in October, 2008-2009 should the average water yield 10m in place
3About/h, in April, 2009, the water yield reduced to 7m gradually
3About/h, 5--7 month water yield 2m
3About/h, by the end of July should 3 the no longer water outlets of hole in place.This drill site amounts to about 60,000 m of the unrestrained water yield
3
The 1437 meters 1# in III 4205 lanes hole and begin to discharge water on February 6th, 2009, initial water yield 15m
3About/h; 2# holes and begins to discharge water on February 8th, 2009, initial water yield 10m
3About/h.March-August should the average 8m of place's water yield
3About/h, about 40,000 m of the unrestrained water yield before the working face extraction
3
Hole and begin to discharge water the initial water yield 15m of single hole on December 25th, 2008 in 230 meters, III 4206 lanes
3About/h, February-August should the average 10m of place's water yield
3About/h, about 5.7 ten thousand m of the unrestrained water yield before the working face extraction
3
The 750 meters 1# in III 4206 lanes hole and begin to discharge water on March 18th, 2009, and 2# holes and discharges water the initial water yield 16m of single hole on March 23rd, 2009
3About/h.Average 10m of 6--8 month
3About/h, this place's water yield is stabilized in 7m gradually afterwards
3About/h.About 4.8 ten thousand m of the unrestrained water yield before the working face extraction
3
4303 work planes before the working face extraction, amount to about 200,000 m of the unrestrained top board water yield in pilot production in August, 2009
3
(4), actual back production water yield situation
Long flat mine other work plane water yield situation of back production is following:
Through last table analysis relatively, visible through implement unrestrained water unrestrained after, can reduce the water yield in the working face extraction process, alleviate drainage system pressure, promoted safety factor.
Preceding 300 meters not carry out roof water unrestrained for 4305 work planes, maximum flooding quantity 100m
3/ h has brought to production to seriously influence.300 to 1000 meters have been carried out the unrestrained water of top board, amount to unrestrained 220,000 m
3, maximum flooding quantity is 40m during back production
3/ h.It is thus clear that through the unrestrained maximum flooding quantity that can effectively reduce work plane of roof water.
2, alleviate the pressure that mine water is handled, improved economic benefit.
(1), dosage contrast:
Test shows: same processing 1L water sample, water sample is Duoed with 2 milliliters of soups than unrestrained top board water sample after the work plane main roof caving.
In the actual mechanical process, when handling unrestrained roof water, every processing 2500 m
3Mine water needs medication 600Kg, per tour dosing twice, each 100Kg.When handling after the main roof caving water, every processing 2500 m
3, need medication 900Kg, per tour dosing three times, each 100Kg.It is thus clear that during water, many medications every day 300Kg according to drug price 2500 yuan of calculating per ton, expends 750 yuan every day more after the processing main roof caving, every month consumes 22500 yuan.
(2), inflow rate of mine water contrast:
Long flat mine water takes the sloping plate deposition filtering technique to handle, and the Design Treatment scale is 330m
3/ h, the normal water yield in mine down-hole is 160m
3/ h, through planned, autotelic unrestrained water, inflow rate of mine water has been increased to 200--230 m
3/ h.If do not carry out unrestrained water, directly increase the water yield 150 m after the work plane main roof caving
3/ h, inflow rate of mine water will reach 310 m
3/ h, disposal ability will be handled mine water and bring huge pressure near saturated.
Through contrast, visible to the unrestrained in advance effective pressure that mine water is handled that reduced of roof water, improved economic benefit.
Interpretation of result
1, the drift dewatering ability has determined the unrestrained water yield how much.When need accelerating drainage speed, can suitably beat several eyes (3～5) more, link them on same time pipeline.The tunnel overlays discharge pipe line, installs high powered water pump, improves the drift dewatering system.
Want conscientious observing water quantity to change when 2, discharging water, aperture, unrestrained water hole valve generally need not be closed, and causes water to flow out or anhydrous illusion along near the top board crack drill site in case bastard coal stops up boring.
3, the orifice tube of the unrestrained water boring of mine will be fixed, and orifice tube is reinforced with big chain, prevents that orifice tube from coming off.
4, to strengthen near the supporting of drill site chamber, splash the top board situation of change, guarantee to have the operating environment of a safety.
Claims (3)
1. preparatory unrestrained job practices of stope roof water, it is characterized in that: work plane is for going down the hill afterwards to go up a hill back production earlier, before working face extraction; At the gate road of work work plane side to the face roof processing that discharges water in advance; Tunnel every driving 250-500 rice, at a lowest part drill site chamber of construction and a sump in tunnel, two water pumps are installed at the sump place; An operate as normal, one is subsequent use; Lay discharge pipe line twice then in the tunnel, drainage system is drainage system independently, and to the boring of face roof direction construction drainage, the boring water conservancy directly imports sump with flexible pipe, utilizes the draining of drift dewatering system again in the drill site chamber.
2. the preparatory unrestrained job practices of stope roof water according to claim 1, it is characterized in that: water discharge time was not less than 3 months, was not more than 10m up to the single hole water yield
3/ h.
3. the preparatory unrestrained job practices of stope roof water according to claim 1 is characterized in that: boring is fan-shaped layout to the work plane side, and the boring elevation angle is 30-60 °, and drilling depth surpasses 20-50 meters of sand layers.
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| CN102926802A (en) * | 2012-10-30 | 2013-02-13 | 开滦(集团)有限责任公司东欢坨矿业分公司 | Method for reducing silt coal by using underground water drainage tunnel of coal mine |
| CN102926803A (en) * | 2012-10-30 | 2013-02-13 | 开滦(集团)有限责任公司东欢坨矿业分公司 | Water drainage method for simultaneously exploiting water and coals under complicated hydrological condition |
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| CN111042861B (en) * | 2019-12-31 | 2021-07-13 | 淮北矿业股份有限公司 | Advanced treatment method for water damage of working surface of coal mine underground roadway |
| CN112302715A (en) * | 2020-11-06 | 2021-02-02 | 天地科技股份有限公司 | Soft sandstone aquifer dredging and lowering method |
| CN112878310A (en) * | 2021-01-20 | 2021-06-01 | 天津市华普生产力促进有限公司 | Foundation construction method for municipal engineering |
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