CN104358558B - Old dead zone detection method based on fracturing principle - Google Patents
Old dead zone detection method based on fracturing principle Download PDFInfo
- Publication number
- CN104358558B CN104358558B CN201410454295.XA CN201410454295A CN104358558B CN 104358558 B CN104358558 B CN 104358558B CN 201410454295 A CN201410454295 A CN 201410454295A CN 104358558 B CN104358558 B CN 104358558B
- Authority
- CN
- China
- Prior art keywords
- water
- dead zone
- pressure
- old
- old dead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001514 detection method Methods 0.000 title abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 120
- 238000002347 injection Methods 0.000 claims abstract description 40
- 239000007924 injection Substances 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 31
- 239000003245 coal Substances 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000010276 construction Methods 0.000 claims description 18
- 238000005553 drilling Methods 0.000 claims description 7
- 238000000151 deposition Methods 0.000 claims 1
- 239000012466 permeate Substances 0.000 abstract description 2
- 239000011324 bead Substances 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 3
- 230000003449 preventive effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000010271 massa medicata fermentata Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geophysics (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses an old dead zone detection method based on the fracturing principle and belongs to the technical field of mine old dead zone water prevention and control. The old dead zone detection method comprises the following steps: (1) constructing drill holes; (2) sealing the orifice ends of the drill holes; (3) performing high-pressure water injection on the drill holes; (4) observing water flow and pressure changes; (5) judging whether an old dead zone exists; (6) drawing off water in the old dead zone. According to the invention, a high-pressure water pump is utilized to fill high-pressure water flow in the drill holes, and the water permeates into a coal bead; when the old dead zone exists in the coal bed, and as the pressure of the old dead zone water is far lower than that of high-pressure water, the high-pressure water penetrates through a coal pillar and abundantly flows into the old dead zone to cause the fact that a flow expression number on a water injection pipe is increased suddenly, and the pressure expression number is reduced rapidly; conversely, if the flow expression number does not change greatly during the water injection process, and the pressure expression number is kept unchanged, the old dead zone does not exist. When the old dead zone detection method is adopted for detecting the old dead zone, omission can be avoided, the detection process is fast and effective, the old dead zone water can be timely and effectively drawn off, and the safety of underground field operation can be practically ensured.
Description
Technical field
The present invention relates to a kind of old Exhausted area prospecting method based on pressure break principle, belong to mine anti-punish-old sky water technology neck
Domain.
Background technology
In the old lane of digging and cavity, often there are a large amount of hydrops, referred to as empty water always.Empty water is to threaten mine safety at present always
Most important water damage form.Empty water gushing water has that the instantaneous water yield is big, breaks with tremendous force, easily causes the spies such as personnel casualty accidentses always
Point.In recent years, the personnel casualty accidentses caused by empty water happen occasionally always, and Shanxi Anhe coalfield occurs water damage thing within such as 2009
Therefore, cause 38 people dead it is simply that being caused by old sky water.
Empty water harm is serious always, but empty water is detected very difficult always, main reason is that, the distribution of old dead zone is different from and contains
Water layer, tomography etc. are it may be said that be to have no regularity can say.The cundy that particularly older with large area dead zone is connected, bag
Include small coal pit excavation Shi Tan lane, often become the fish that has escape the net in detecting, and these visit lane, because of dead zone old with large area even
Logical, once connecting this spy lane in mining process, catastrophic failure can be caused.
At present old sky water is detected, mainly visited as main method in pick with the tunneling process of down-hole.In " colliery preventing and treating
Water specifies " in, the drilling requirements of empty water are detected always in specified in more detail tunnel in advance：Investigative range requires as side away from 30m, holes close
Spend vertical upper pitch-row and be not more than 2m, transversely pitch-row is not more than 3m.So high density, in actual mechanical process substantially
Cannot complete.But do not press this density construction drill, there is a possibility that to omit old dead zone (little Tan lane) again.
Therefore, both can guarantee that to be not in omission in the urgent need to one kind at present, and can empty water detection side always effective and rapidly
Method, ensures underground construction job safety conscientiously.
Content of the invention
The problem existing for above-mentioned prior art, the present invention provides a kind of old Exhausted area prospecting side based on pressure break principle
Method, the detection exhaustive to the old dead zone in down-hole, detect convenient and swift, effectively prevent always the harm of empty water it is ensured that mine operation is pacified
Entirely.
To achieve these goals, the present invention adopt a kind of old Exhausted area prospecting method based on pressure break principle, including with
Lower step,
(1) construction drill：Meet head on by tunnel, to construct one in the direction tunneled in tunnel and hole, drilling depth is not less than
100m, dip angle of hole is parallel with coal seam；
(2) drilling orifice end seal hole：Reserve a water injection pipe in the boring constructed, water filling length of tube is not less than 50m,
Then in rear end 25-35m position sealing of hole at boring opening；
(3) to boring inner high voltage water filling：Water injection pipe is connected valve, flow meter and pressure gauge, then connects water injection equipment,
Open water injection equipment to water filling in boring, concrete pressure value determines according to the intensity in coal seam and the size of crustal stress；
(4) observation discharge, pressure change：Observe flow meter and the change of manometric registration in the injecting process, draw phase
The curve chart answered；
(5) determine whether there is old dead zone：If flow meter registration increases suddenly, pressure gauge registration reduces suddenly simultaneously, table
There is old dead zone in bright front, stop water filling, is discharged water by boring, flows out if there are old sky water, is further characterized by old dead zone
Presence；If the change of flow meter registration is less in the injecting process, pressure gauge registration keeps constant, shows that front is entity coal,
There is not old dead zone；
(6) old dead zone discharges water：When detecting presence empty water always, shed water injection equipment, using water injection pipe as adjutage, beat
Valve opening door, the always empty water in boring is discharged.
Further, rear end 30m position sealing of hole at step (2) middle-range boring opening.
Further, in step (2) sealing of hole using chemical grout, cement mortar add water glass or adopt physical method sealing of hole.
Further, in step (3), water injection pressure is not less than 5MPa.
Further, in step (3), water injection equipment is high-pressure hydraulic pump.
Further, in step (4), flow meter and pressure gauge will be observed simultaneously.
The pressure break principle of the present invention is：Inject High-Pressure Water using water injection equipment into boring, water under high pressure penetrates into coal seam
In, when there is old dead zone in coal seam, because the pressure of empty water always is far below water under high pressure, high pressure water breakthrough coal column, a large amount of flow into
In old dead zone, flow meter registration on water injection pipe is led to increase suddenly, pressure gauge registration reduces rapidly；When coal seam Zhong Wulao dead zone is deposited
When, water under high pressure can only slowly permeate in entity coal, now in the injecting process the change of flow meter registration less, pressure gauge registration
Keep constant.
Using the method for the present invention, in mine, Detecting Old dead zone will not produce omission, it is to avoid underground construction operation has peace
Full hidden danger, detection process is effective and rapid, timely and effectively can discharge empty water always, conscientiously ensure the safety of underground construction operation.
Brief description
Fig. 1 is the process chart of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described.
Embodiment one
According to the technological process shown in Fig. 1, when Shanxi Xiangyuan Jin Ping colliery carries out digging operation, using the side of the present invention
Method carries out old Exhausted area prospecting operation, specifically includes following step：
(1) Jin Ping colliery 715 return aircourse meet head on by tunnel will tunnel direction (185 ° of azimuth), construction one brill
Hole, drilling depth is 120m, and dip angle of hole is parallel with coal seam, and angle is 5 °；
(2) reserve a water injection pipe after the completion of holing in hole, water filling length of tube is 70m, then after at boring opening
End about 30m position cement-silicate injection hole sealing, makes water pipe be fixed in boring it is ensured that when injecting water under high pressure into boring,
Seepage, the judgement to old dead zone for the impact will not occur at boring opening；
(3) water injection pipe is connected valve, flow meter and pressure gauge, then connect high-pressure hydraulic pump, open water pump into boring
Water filling, according to the size of the intensity in coal seam and crustal stress in 715 return aircourses, final choice water injection pressure is 8MPa, in boring
There is pressure differential, if water penetration, to old dead zone, due to the presence of differential water pressures, makes in now boring in coal seam between current and always empty water
Crack is produced, in boring, current pour in old dead zone in coal seam, by flow meter, the change of manometric registration on water injection pipe,
Accurately and effectively judge the presence of old dead zone；
(4) in the injecting process observe flow meter and manometric registration change, draw corresponding when m- flow, when m- pressure
Massa Medicata Fermentata line chart, flow meter and pressure gauge will be observed simultaneously, only quickly increase when flow meter, pressure gauge registration quickly reduces,
(when flow meter, pressure gauge registration are stablized, curve near tangent slope is no to show as tangent slope generation significant change on curve chart
Change), just showing to hole nearby has old dead zone, and result of detection is more accurate, effective guarantee underground work safety；
(5), during digging construction operation, Shanxi Ping Kuang 715 return aircourse has successively carried out 4 bore detectings, front 3 brills
In the injecting process of hole, less, pressure gauge registration keeps constant to the change of flow meter registration, shows that boring is nearby entity coal, does not exist
Old dead zone, can be normally carried out digging operation, not affect the duration, and during the 4th pouring water into borehole, flow meter registration increases suddenly, with
When pressure gauge registration reduce suddenly, show front there is old dead zone；
(6) because the 4th bore detecting has old dead zone, then take counter-measure, shed the water under high pressure on water injection pipe
Pump, using water injection pipe as adjutage, opens valve, the always empty water in boring is discharged, in subsequent construction, is really found that old sky
, due to taking effective draining preventive measure in advance, there is not casualties in area, do not delay digging operation yet.
Embodiment two
Using the detection method of the present invention, carry out detecting operation, construction procedure in Xiangyuan Jin Ping colliery 625 return aircourse
For,
(1) Jin Ping colliery 625 return aircourse meet head on by tunnel will tunnel direction (185 ° of azimuth), construction one brill
Hole, drilling depth is 100m, and dip angle of hole is parallel with coal seam, and angle is 5 °；
(2) reserve a water injection pipe after the completion of holing in hole, water filling length of tube is 50m, then after at boring opening
End 25m position chemical grout injection hole sealing, makes water pipe be fixed in boring it is ensured that when injecting water under high pressure into boring, will not
There is seepage, the judgement to old dead zone for the impact at boring opening；
(3) water injection pipe is connected valve, flow meter and pressure gauge, then connect high-pressure hydraulic pump, open water pump into boring
Water filling, according to the intensity in coal seam in 625 return aircourses in colliery and the size of crustal stress, final choice water injection pressure is 5MPa；
(4) this step is consistent with operating in embodiment one；
(5), during digging construction operation, Shanxi Ping Kuang 625 return aircourse successively carried out 3 bore detectings, the 1st, 3
Pouring water into borehole flow in process represents number change less, and pressure gauge registration keeps constant, shows that boring front is entity coal, does not deposit
In old dead zone, therefore it is normally carried out digging operation, does not affect the duration, during the 2nd pouring water into borehole, flow meter registration increases suddenly,
Pressure gauge registration reduces suddenly simultaneously, shows that front has old dead zone；
(6) because the 2nd bore detecting has old dead zone, then take urgent counter-measure, shed the height on water injection pipe
Water pump, using water injection pipe as adjutage, opens valve, by the always empty water exclusion in boring, when follow-up digging is constructed to this section,
Really it is found that discarded always empty tunnel, due to taking effective draining preventive measure in advance, empty water gushing water does not occur always
The casualties leading to, does not delay digging operation yet.
Embodiment three
Carry out detecting construction operation in Xiangyuan Jin Ping colliery 502 return aircourse, construction procedure is,
(1) 502 return aircourses meet head on by tunnel will tunnel direction (185 ° of azimuth), construction one boring, boring
Depth is 150m, and dip angle of hole is parallel with coal seam, and angle is 5 °；
(2) reserve a water injection pipe after the completion of holing in hole, water filling length of tube is 90m, then after at boring opening
End 35m position physical method injection hole sealing, makes water pipe be fixed in boring it is ensured that when injecting water under high pressure into boring, will not
There is seepage, the judgement to old dead zone for the impact at boring opening；
(3) water injection pipe is connected valve, flow meter and pressure gauge, then connect high-pressure hydraulic pump, open water pump into boring
Water filling, according to the intensity in coal seam in 502 return aircourses in colliery and the size of crustal stress, water injection pressure in this tunnel of final choice
For 10MPa；
(4) this step is consistent with operating in embodiment one；
(5), during digging construction, because 502 return aircourse surface relief structures are complicated, in order to ensure construction safety, successively carry out
5 bore detectings, the 1st, 2,4 pouring water into borehole flow in process represent number change less, and pressure gauge registration keeps constant, shows
Front is entity coal, there is not old dead zone, therefore can be normally carried out digging operation near this boring, not because Detecting Old
Dead zone affects the digging duration, does not also leave potential safety hazard, during the 3rd, 5 pouring water into boreholes, flow meter registration increases suddenly, simultaneously
Pressure gauge registration reduces suddenly, and showing to hole nearby has old dead zone；
(6) nearby there is old dead zone for the 3rd, 5 borings finding in construction, engineering staff takes urgent counter-measure,
Shed the high-pressure hydraulic pump on water injection pipe, using water injection pipe as adjutage, open valve, the always empty water in boring is discharged, subsequently
When digging is constructed to this section, really it is found that discarded coal mine gob, tunnel respectively, due to taking effective draining in advance
, there is not casualties in preventive measure, do not delay digging operation yet.
Claims (5)
1. a kind of old Exhausted area prospecting method based on pressure break principle is it is characterised in that comprise the following steps,
(1) construction drill：Meet head on by tunnel, to construct one in the direction tunneled in tunnel and hole, drilling depth is not less than 100m,
Dip angle of hole is parallel with coal seam；
(2) drilling orifice end seal hole：Reserve a water injection pipe in the boring constructed, water filling length of tube is not less than 50m, then
In rear end 25-35m position sealing of hole at boring opening；
(3) to boring inner high voltage water filling：Water injection pipe is connected valve, flow meter and pressure gauge, then connects water injection equipment, open
Water injection equipment determines to water filling in boring, concrete pressure value according to the intensity in coal seam and the size of crustal stress；
(4) observation discharge, pressure change：Observe flow meter and the change of manometric registration in the injecting process, draw corresponding
Curve chart；
(5) determine whether there is old dead zone：If flow meter registration increases suddenly, pressure gauge registration reduces suddenly simultaneously, before showing
There is old dead zone in side, stop water filling, is discharged water by boring, flows out if there are old sky water, is further characterized by depositing of old dead zone
?；If the change of flow meter registration is less in the injecting process, pressure gauge registration keeps constant, shows that front is entity coal, does not deposit
In old dead zone；
(6) old dead zone discharges water：When detecting presence empty water always, shed water injection equipment, using water injection pipe as adjutage, open valve
Door, the always empty water in boring is discharged.
2. a kind of old Exhausted area prospecting method based on pressure break principle according to claim 1 it is characterised in that：Described step
(2) rear end 30m position sealing of hole at middle-range boring opening.
3. a kind of old Exhausted area prospecting method based on pressure break principle according to claim 1 it is characterised in that：Described step
(3) in, water injection pressure is not less than 5MPa.
4. a kind of old Exhausted area prospecting method based on pressure break principle according to claim 1 it is characterised in that：Described step
(3) in, water injection equipment is high-pressure hydraulic pump.
5. a kind of old Exhausted area prospecting method based on pressure break principle according to claim 1 it is characterised in that：Described step
(4) in, flow meter and pressure gauge will be observed simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410454295.XA CN104358558B (en) | 2014-09-05 | 2014-09-05 | Old dead zone detection method based on fracturing principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410454295.XA CN104358558B (en) | 2014-09-05 | 2014-09-05 | Old dead zone detection method based on fracturing principle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104358558A CN104358558A (en) | 2015-02-18 |
| CN104358558B true CN104358558B (en) | 2017-02-08 |
Family
ID=52525855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410454295.XA Expired - Fee Related CN104358558B (en) | 2014-09-05 | 2014-09-05 | Old dead zone detection method based on fracturing principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104358558B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625897B (en) * | 2018-03-14 | 2020-04-24 | 山东大学 | Artificial drainage pressure relief method for water-rich area outside tunnel |
| CN108468566B (en) * | 2018-03-26 | 2019-11-26 | 中煤科工集团西安研究院有限公司 | Empty crystal really visits and puts method mine based on underground pencil directional drilling always |
| CN114000827B (en) * | 2021-11-05 | 2023-07-14 | 中国矿业大学 | Collapse column exploration method based on pressure seepage principle and electromagnetic response characteristics |
-
2014
- 2014-09-05 CN CN201410454295.XA patent/CN104358558B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104358558A (en) | 2015-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110939442B (en) | Method for treating rock burst by pressure relief source in ground fracturing area | |
| CN103334770B (en) | One is grown up reverse-slope tunnel ultra high water pressure rich water zone of fracture construction method | |
| CN107060834B (en) | drainage slow-seepage grouting control process under tunnel roof water-rich crushing condition | |
| CN102619552B (en) | Directional hydraulic pressing penetration, permeability increase and outburst elimination method of guide groove | |
| CN101832142B (en) | Tunnel information tracing accurate grouting method | |
| CN105239984B (en) | A kind of coal mine underground fracturing crack extends control method | |
| CN104790951B (en) | Weaken the method and device away from the high-order tight roofs of 100 ~ 350m of coal seam | |
| CN103835651B (en) | A kind of single hole directional drilling local slip casting mine shaft rising boring technique | |
| CN109209472A (en) | The coal seam pressure relief anti-burst method that a kind of punching, explosion, water filling intercouple | |
| CN111456723B (en) | One-hole dual-purpose method for overburden three-zone detection and rock stratum movement monitoring | |
| CN101761346A (en) | Method for constructing metamorphic rock confined water tunnel | |
| CN103195468A (en) | System process for conducting efficient strengthened extraction in surrounding rock | |
| CN111520184A (en) | Comprehensive control system and method for coal mine rock burst and harmful gas | |
| CN103742127B (en) | A kind of overlying strata caving zone and height of water flowing fractured zone Drill-hole television detection determination method | |
| CN107083967A (en) | The method and system of extremely hard rock are tunneled using hydraulic fracturing technology liaison tunnel development machine | |
| CN110107284B (en) | Drilling and testing system and method for detecting height of water flowing fractured zone through water pressure | |
| CN112502663B (en) | Curtain grouting method based on directional hydraulic mechanical splitting technology | |
| CN103850678A (en) | Hydraulic fracturing ground stress testing system for panoramic drill hole inspection instrument | |
| CN104358558B (en) | Old dead zone detection method based on fracturing principle | |
| CN103498680A (en) | Method for increasing top-coal recovery rate in primary mining period of fully-mechanized caving face | |
| CN108180035A (en) | Gas extraction method for combined operation of drilling and permeability increasing of high-gas low-permeability coal seam | |
| CN110792450A (en) | Method for determining advanced support of grouting anchor cable | |
| CN106499384A (en) | Coal bed gas directional well injection/pressure fall-off test test device and its method | |
| CN207406345U (en) | Rich water sand-pebble layer shield tunnel end horizontal grouting ruggedized construction | |
| CN106988738A (en) | A kind of detection method of definitely stress distribution feature |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |