CN108343431A - A kind of bedrock fracture ground water regime drift net probes into method - Google Patents
A kind of bedrock fracture ground water regime drift net probes into method Download PDFInfo
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- 239000003673 groundwater Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000000523 sample Substances 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 105
- 238000005553 drilling Methods 0.000 claims abstract description 59
- 238000005259 measurement Methods 0.000 claims abstract description 8
- 239000011435 rock Substances 0.000 claims description 54
- 239000002775 capsule Substances 0.000 claims description 25
- 238000010586 diagram Methods 0.000 claims description 15
- 238000011161 development Methods 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 10
- 238000011084 recovery Methods 0.000 claims description 9
- 238000012795 verification Methods 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 230000002169 extracardiac Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- -1 runoff direction Substances 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 238000009533 lab test Methods 0.000 abstract description 6
- 238000004458 analytical method Methods 0.000 abstract description 5
- 241001074085 Scophthalmus aquosus Species 0.000 description 6
- 239000000843 powder Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 206010015866 Extravasation Diseases 0.000 description 1
- 241000211181 Manta Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000036251 extravasation Effects 0.000 description 1
- 239000011799 hole material Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- NFGXHKASABOEEW-LDRANXPESA-N methoprene Chemical compound COC(C)(C)CCCC(C)C\C=C\C(\C)=C\C(=O)OC(C)C NFGXHKASABOEEW-LDRANXPESA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- 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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/003—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by analysing drilling variables or conditions
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- 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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
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- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
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- 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
- E21B47/04—Measuring depth or liquid level
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Abstract
The invention discloses a kind of bedrock fracture ground water regime drift nets to probe into method, this method is based on the basis of the hydrogeologic prospecting of Bed Rock Region, while drilling well, measure the piezometric head after the footage per round trip one by one of each drilling hole, the piezometric head value for obtaining different depth in exploratory hole observes data, and then underground water drift net is drawn, analysis calculates the groundwater flow intensity of different depth.This method need not carry out geological conditions artificial generalization, there is no calculate error using the actual measurement head value for the interior different depth that drills as foundation, completely eliminate previous numerical computations or the error of laboratory experiment, precision is reliable, and the achievement of acquirement meets field reality, has science.In addition this method can carry out water-level observation by ongoing geotechnical boring or hydrogeology or engineering geological drilling work, without putting into special underground water drift net prospecting, saved the time, improved efficiency, had compared with hi-tech economy.
Description
Technical field
The present invention relates to groundwater science and engineering technical fields, specifically a kind of for probing into brittleness bedrock formation
Middle water vein system drift net probes into method.
Background technology
Life, the production of the mankind be unable to do without water resource, and the large scale mining of underground water utilizes and many hydrogeology problems
It administers, generally requires to find out that Analysis of Ground-water Seepage Field feature, drawing area ground water regime flow-net diagram can just solve these problems.It passes
The ground water regime flow-net diagram of system is typically all to show by numerical simulation or the drafting of the methods of Analytic Method or laboratory experiment
It is intended to, existing method, which not only needs to put into a large amount of investigation and prospecting, could obtain related data data, but also the flow-net diagram drawn
Only with the schematic diagram of physical presence error.
There are major defects：First, numerical simulation and analytic method are to solve acquisition by generally changing hydrogeologic condition, calculate
Hydrogeological parameter necessary to drift net itself is exactly a calculated value, often will appear the error of the order of magnitude, therefore theoretical calculation institute
The drift net obtained is only a kind of schematic diagram, there is prodigious uncertainty；Two laboratory experiments are restricted by time scale and space scale,
The scale effect of laboratory experiment method is huge, and especially indoor Physical Experiment there is no the method emulation heterogeneous crack in field to contain at present
Water system, therefore laboratory experiment method is detached from the Nature physical condition.
Invention content
In view of the above-mentioned problems, the present invention provides a kind of bedrock fracture ground water regime drift nets to probe into method, this method base
On the basis of the hydrogeologic prospecting of Bed Rock Region, while drilling well, measure each drilling hole footage per round trip one by one it
Piezometric head afterwards, the piezometric head value for obtaining different depth in exploratory hole observes data, and then draws underground water drift net, analysis
The groundwater flow intensity for calculating different depth, enriches the exploratory techniques method of hydrogeology, and ensure that and finally obtain
Underground water drift net accuracy.
The technical scheme adopted by the invention to solve the technical problem is that：
A kind of bedrock fracture ground water regime drift net probes into method, includes the following steps,
The first step：It chooses a drill site as needed to be drilled, and each footage per round trip is more than 0.5 meter and is less than 2 meters；
Second step：The first round trip drilling footage length L1 is recorded, and puts into strip coring；
Third walks：The length M1 of the core taken out in second step is measured, and calculates core recovery percentage M1/L1, if taking rate
Less than 70%, then tripping in drilling tool pulls remaining rock core out again；
4th step：Bedding fissure, the structural fracture developmental state of second step and/or the acquired rock core of third step are observed,
Record cranny development section depth H 11-H12；
5th step：The complete segment length of rock core is measured,
5.1, when the complete segment length of rock core is more than 0.5 meter, record the depth J11-J12 of rock core complete segment, prepare second time
Secondary drilling；
5.2 when the complete segment length of rock core is less than 0.5 meter, prepares the second round trip drilling；
6th step：The second round trip drilling footage length L2 is recorded, and puts into strip coring；
7th step：The length M2 of the core taken out in the 6th step is measured, and calculates core recovery percentage M2/L2, if taking rate
Less than 70%, then tripping in drilling tool pulls remaining rock core out again；
8th step：Bedding fissure, the structural fracture developmental state of the rock core acquired by the 6th step and/or the 7th step are observed,
Record cranny development section depth H 21-H22；
9th step：The complete segment length of rock core is measured,
9.1 when the complete segment length of rock core is more than 0.5 meter,
9.1.1 rock core complete segment depth J21-J22 is recorded,
9.1.2, water-stop is fixed on to the lower end of drilling rod, and the water-filled capsule of water-stop is passed through into high-pressure hose and pressure testing
Pump is connected, and then water-stop is positioned in drilling by drilling machine, and the water-filled capsule of water-stop is made to be located at the second round trip drilling
The intermediate position of middle J21-J22；
9.1.3 hydraulic test pump carries out water-filling pressurization to water-filled capsule；
9.1.4 after pressurization reaches specified pressure, the head value in drilling rod and the mixing water level outside drilling rod are measured every 5min
Value, until the head value stabilization in pipe, records the mixing water place value Z2 outside the head value Y2 and pipe in pipe at this time；
9.1.5 water-stop is taken out in release, prepares third round trip drilling；
9.2 when the complete segment length of rock core is less than 0.5 meter, prepares third round trip drilling；
Tenth step, repeats the operation of the 6th step to the 9th step, measures the core recovery percentage Mi/ of each round trip one by one
Li, cranny development section depth H i1-Hi2, rock core complete segment depth Ji1-Ji2, head value Yi and the outer mixing water place value of pipe in pipe
Zi, until probing terminates；
The data of acquirement have：
Under different depth, head value Y1, Y2, Y3 in pipe ..., Yi ..., Yn；
Under different depth, mixing water place value Z2, Z3 outside pipe ..., Zi ..., Zn；
11st step, according to the depths different with outer mixing water place value Zi draftings are managed of head value Yi in the pipe of the different depth of measurement
The head value curve of degree, and judge the pressure-bearing characteristic of different depth underground water, type；
12nd step chooses at least one drill site successively along plane direction of groundwater flow, and successively in the probing of selection
Repeat operation of the first step to the 11st step on point；
13rd step, in conjunction with the recharge of ground water, runoff direction, rock and water-bearing layer spatial distribution and measured each brill
The head value Yi for visiting the different depth of point draws ground water regime flow-net diagram；
14th step calculates the hydraulic gradient and hydrodynamic condition of different depth according to ground water regime flow-net diagram；
15th step：According to the developmental state determination of different depth rock core bedding fissure, structural fracture on different drill sites
The distributing position of the water barrier of different drill sites, and then judge the hydraulic connection between the different depth of different drill sites；
16th step, the tripping in water quality monitor in the drilling of each drill site, according to 2 meters of measuring space of footage per round trip
PH, conductivity and temperature in hole is compared to bottom hole, and with the piezometric head value Yi of each round trip, is confirmed and is verified lithic drainage
The reasonability that flow-net diagram of uniting is drawn.
Further, it measures each round trip and carries the mixing water level Xi before being bored under mixing water level Ti and next round trip after boring,
And compares Xi and Ti and auxiliary verification is carried out to the judgement of fractured situation.
Further, tripping in water-stop each time carry out head measurement before, tripping in water pump to designated depth, and outward
It draws water, until water quality becomes clear.
Further, tripping in water-stop carry out head test when, when water-filled capsule be located at depth 100m with it is shallow when pressurize
To 1.1MPa, it is forced into 2.1MPa when depth of the water-filled capsule between 100-200m, when water-filled capsule is located at 200-
It is forced into 3.1MP when depth between 300m, 4.1MPa is forced into when depth of the water-filled capsule between 300-400m, when
It is forced into 5.1Mpa when depth of the water-filled capsule between 400-500m.
Further, it is drilled using revolution boring method.
Further, the bit diameter used when probing is 127mm or 168mm.
Further, it is to punch water-bearing layer the condition of end to be drilled in the tenth step.
The beneficial effects of the invention are as follows：
1, using the actual measurement head value of different depth in drilling as foundation, artificial generalization need not be carried out to geological conditions,
There is no error is calculated, previous numerical computations or the error of laboratory experiment are completely eliminated, precision is reliable, and the achievement of acquirement meets open country
Outer reality has science.
2, water-level observation, nothing can be carried out by ongoing geotechnical boring or hydrogeology or engineering geological drilling work
Special underground water drift net prospecting need to be put into, the time has been saved, has improved efficiency, had compared with hi-tech economy.
3, scientific in principle, method be simple, convenient disassembly, easy to operate, and data are easy to obtain, and have stronger practicability.
Description of the drawings
Fig. 1 is structural schematic diagram when carrying out head test；
Fig. 2 is the head value curve of the first drill site；
Fig. 3 is ground water regime flow-net diagram.
In figure：1- hydraulic test pumps, 2- high-pressure hoses, 3- water-stops, 31- water-filled capsules, 4- drilling rods, 5- water level testers, 51-
Probe.
Specific implementation mode
A kind of bedrock fracture ground water regime drift net probes into method, includes the following steps：
The first step：A drill site is chosen according to practical study requirements of one's work, is then drilled using revolution boring method,
And each footage per round trip is more than 0.5 meter and is less than 2 meters.Bit diameter can select 127mm or 168mm as a kind of specific embodiment party
Formula, the drill bit described in the present embodiment is using 127mm's.
Second step：After first round trip is crept into, the first round trip drilling footage length L1 is recorded, and put into strip and take rock
The heart.
Third walks：It measures the length M1 of the core taken out in second step, and calculates core recovery percentage, i.e. M1/L1, if taking
Rate is less than 70%, then tripping in drilling tool pulls remaining rock core out again, then carries brill, and survey by water level tester 5 and probe 51
Surely the mixing water level T1 after boring is carried.
4th step：The rock core acquired by second step and/or third step is observed, and observes the bedding fissure of rock core, construct and split
Gap developmental state, record cranny development section depth H 11-H12；
5th step：The complete segment length of rock core is measured,
5.1, when the complete segment length of rock core is more than 0.5 meter, record the depth J11-J12 of rock core complete segment, and pass through water level
Tester 5 and probe 51 measure the mixing water level X1 in hole at this time, then compare X1 and T1, to the cranny development feelings in the 4th step
The judgement of condition carries out auxiliary verification, is ready for the second round trip drilling；
5.2, when the complete segment length of rock core is less than 0.5 meter, directly measure hole at this time by water level tester 5 and probe 51
Interior mixing water level X1, then compares X1 and T1, carries out auxiliary verification to the judgement of the fractured situation in the 4th step, then
Prepare the second round trip drilling.
Due to carry bore and it is next time lower bore between time interval at least two hours, if there are cranny development section,
Will necessarily have differences between X1 and T1, i.e. X1 are more than T1.If cranny development section is not present, theoretically answered between X1 and T1
This is equal, to carry out auxiliary verification to the judgement of the fractured situation in the 4th step.
6th step：The second round trip drilling is carried out, records the second round trip drilling footage length L2, and put into strip coring.
7th step：It measures the length M2 of the core taken out in the 6th step, and calculates core recovery percentage, i.e. M2/L2, if taking
Rate is less than 70%, then tripping in drilling tool pulls remaining rock core out again, then carries brill, and survey by water level tester 5 and probe 51
Surely the mixing water level T2 after boring is carried.
8th step：The rock core acquired by the 6th step and/or the 7th step is observed, and observes the bedding fissure of rock core, construct and split
Gap developmental state, record cranny development section depth H 21-H22.
9th step：The complete segment length of rock core is measured,
9.1 when the complete segment length of rock core is more than 0.5 meter,
9.1.1 rock core complete segment depth J21-J22 is recorded, J21-J22 in then being crept into the second round trip under water pump
Then intermediate position uses water pump to extracardiac pumping, until water quality becomes clear.
This is primarily due to will produce rock powder in drilling process, and rock powder can block the crack of brittle rock, hole, rock powder
After the crack and the hole that block brittle rock, hydraulic connection is caused to weaken, water level in borehole changes insensitive, obtained waterlevel data
There is error.By water pump to extracardiac pumping, crevice water is made to be washed away with hole to the crack of blocking during extravasation, ensured
Obtain the accuracy of data.
9.1.2, water-stop 3 is fixed on to the lower end of drilling rod 4, and the water-filled capsule of water-stop 3 31 is passed through into high-pressure hose 2
It is connected with hydraulic test pump 1, then water-stop 3 is positioned in drilling by drilling machine, and the water-filled capsule 31 of water-stop 3 is made to be located at the
The intermediate position of J21-J22 in two round trips drilling.
As a kind of specific implementation mode, fixation is set by welding for the upper end of water-stop 3 described in the present embodiment
It is equipped with a swivel nut, the lower end of the drilling rod 4 is provided with external screw thread, and the swivel nut is solid by the lower end of screw thread and the drilling rod 4
Fixed connection.Water-stop described herein belongs to the prior art, and details are not described herein.As a kind of specific implementation mode, this reality
Water-stop described in example is applied using the ZFA64-2 type water conservancy Geological Engineerings of Hebei Yutong Special Rubber Tube Co., Ltd's production with stopping
Hydrophone.
9.1.3 hydraulic test pump 1 carries out water-filling pressurization to water-filled capsule 31.When water-filled capsule 31 be located at depth 100m with it is shallow when add
It is depressed into 1.1MPa, 2.1MPa is forced into when depth of the water-filled capsule 31 between 100-200m, when water-filled capsule 31 is located at
It is forced into 3.1MP when depth between 200-300m, is forced into when depth of the water-filled capsule 31 between 300-400m
4.1MPa is forced into 5.1Mpa when depth of the water-filled capsule 31 between 400-500m, and so on.
9.1.4 after pressurization reaches specified pressure, the head value in drilling rod 4 and the mixing water outside drilling rod 4 are measured every 5min
Place value, until the head value stabilization in pipe, i.e., the interior head value luffing of continuous 30 minutes pipes is no more than 2mm, and record is at this time in pipe
Mixing water place value Z2 outside head value Y2 and pipe.
9.1.5 water-stop 3 is taken out in release, and the mixing water level in hole at this time is measured by water level tester 5 and probe 51
Then X2 compares X2 and T2, carry out auxiliary verification to the judgement of the fractured situation in the 8th step, be ready for third round trip
Drilling.
9.2, when the complete segment length of rock core is less than 0.5 meter, directly measure hole at this time by water level tester 5 and probe 51
Interior mixing water level X2, then compares X2 and T2, carries out auxiliary verification to the judgement of the fractured situation in the 8th step, then
Prepare third round trip drilling.
Tenth step, repeats the operation of the 6th step to the 9th step, measures the core recovery percentage Mi/ of each round trip one by one
Li, the mixing water level Ti after boring, the mixing water level Xi before lower brill, cranny development section depth H i1-Hi2, rock core complete segment depth are put forward
The head value Yi and outer mixing water place value Zi of pipe in Ji1-Ji2, pipe, until probing terminates.
The data of acquirement have：
Under different depth, carry bore after mixing water level T1, T2, T3 ..., Ti ..., Tn；
Under different depth, mixing water level X1, X2, X3 before lower brill ..., Xi ..., Xn；
Under different depth, head value Y1, Y2, Y3 in pipe ..., Yi ..., Yn；
Under different depth, mixing water place value Z2, Z3 outside pipe ..., Zi ..., Zn；
What it is due to Y1 surveys is head value, and what X1 was surveyed is mixing water level, when drilling is to crack section, starts to be discharged in drilling,
Head at this time is exactly water level, so Y1 described herein is equal to X1.With going deep into for probing, the crack segment number punched is got over
Come more, Xi is the mixing water level for all cracks section punched, and Yi is the head of a certain crack section, so not phases after the two
Deng.
In addition the condition that the probing terminates is to punch water-bearing layer.
11st step according to head value Yi in the pipe of the different depth of measurement and manages outer the first brill of mixing water place value Zi draftings
The head value curve for visiting point, as shown in Fig. 2, and judging the first drill site not by the head value curve of the first drill site of drafting
With the pressure-bearing characteristic of depth underground water, type.
12nd step chooses at least one drill site successively along plane direction of groundwater flow, and successively in the probing of selection
Repeat operation of the first step to the 11st step on point.
As a kind of specific implementation mode, drill site at two, i.e. the first drill site and the second probing are chosen in the present embodiment
Point.
13rd step is bored in conjunction with the recharge of ground water, runoff direction, rock and water-bearing layer spatial distribution and measured first
The head value for visiting the different depth of point and the second drill site draws ground water regime flow-net diagram, as shown in Figure 3.
14th step calculates the hydraulic gradient and hydrodynamic condition of different depth according to ground water regime flow-net diagram.
By Darcy formulaIt can deriveSince Q, K are unknown numbers, stillThan
Value is constant, be may be usedCharacterize the size variation of runoff intensity.
In formula, Q is the run-off m between two streamlines3/s；
A unit width cross-sectional area m between streamline2；
Δ H is the piezometric head difference m between equal head lines；
L is two spacing m waited between head lines；
K is the infiltration coefficient m of runoff zones；
15th step：According to the developmental state determination of different depth rock core bedding fissure, structural fracture on different drill sites
The distributing position of the water barrier of different drill sites, and then judge the hydraulic connection between the different depth of different drill sites, it is base
The problems such as artificial recharge of rock water vein, the prevention of mining area water damage, crevice water exploitation, crevice water pollution prevention provide science according to
According to.
16th step, the portable MANTA multi-parameter water quality monitors of tripping in the drilling of each drill site, according to round trip
PH, conductivity and temperature in the measuring space hole of 2 meters of drilling depth to bottom hole, and by the PH of measurement, conductivity and temperature with it is each
The piezometric head value Yi of round trip is compared, and further confirms that and verify the reasonability of ground water regime flow-net diagram drafting.
Claims (7)
1. a kind of bedrock fracture ground water regime drift net probes into method, it is characterised in that：Include the following steps,
The first step：It chooses a drill site as needed to be drilled, and each footage per round trip is more than 0.5 meter and is less than 2 meters；
Second step：The first round trip drilling footage length L1 is recorded, and puts into strip coring；
Third walks：The length M1 of the core taken out in second step is measured, and calculates core recovery percentage M1/L1, if taking rate is less than
70%, then tripping in drilling tool pulls remaining rock core out again；
4th step：Observe bedding fissure, the structural fracture developmental state of second step and/or the acquired rock core of third step, record
Cranny development section depth H 11-H12；
5th step：The complete segment length of rock core is measured,
5.1, when the complete segment length of rock core is more than 0.5 meter, record the depth J11-J12 of rock core complete segment, prepare the second round trip and bore
Into；
5.2 when the complete segment length of rock core is less than 0.5 meter, prepares the second round trip drilling；
6th step：The second round trip drilling footage length L2 is recorded, and puts into strip coring；
7th step：The length M2 of the core taken out in the 6th step is measured, and calculates core recovery percentage M2/L2, if taking rate is less than
70%, then tripping in drilling tool pulls remaining rock core out again；
8th step：Bedding fissure, the structural fracture developmental state of the rock core acquired by the 6th step and/or the 7th step are observed, is recorded
Cranny development section depth H 21-H22；
9th step：The complete segment length of rock core is measured,
9.1 when the complete segment length of rock core is more than 0.5 meter,
9.1.1 rock core complete segment depth J21-J22 is recorded,
9.1.2, water-stop is fixed on to the lower end of drilling rod, and the water-filled capsule of water-stop is passed through into high-pressure hose and hydraulic test pump phase
Even, then water-stop is positioned in drilling by drilling machine, and the water-filled capsule of water-stop is made to be located in the second round trip drilling
The intermediate position of J21-J22；
9.1.3 hydraulic test pump carries out water-filling pressurization to water-filled capsule；
9.1.4 after pressurization reaches specified pressure, the head value in drilling rod and the mixing water place value outside drilling rod are measured every 5min, directly
Head value stabilization in pipe records the mixing water place value Z2 outside the head value Y2 and pipe in pipe at this time；
9.1.5 water-stop is taken out in release, prepares third round trip drilling；
9.2 when the complete segment length of rock core is less than 0.5 meter, prepares third round trip drilling；
Tenth step, repeats the operation of the 6th step to the 9th step, measures the core recovery percentage Mi/Li of each round trip one by one, splits
Gap develops section depth H i1-Hi2, rock core complete segment depth Ji1-Ji2, the head value Yi and outer mixing water place value Zi of pipe in pipe, up to
Probing terminates；
The data of acquirement have：
Under different depth, head value Y1, Y2, Y3 in pipe ..., Yi ..., Yn；
Under different depth, mixing water place value Z2, Z3 outside pipe ..., Zi ..., Zn；
11st step according to head value Yi in the pipe of the different depth of measurement and manages outer mixing water place value Zi draftings different depth
Head value curve, and judge the pressure-bearing characteristic of different depth underground water, type；
12nd step chooses at least one drill site successively along plane direction of groundwater flow, and successively on the drill site of selection
Repeat operation of the first step to the 11st step；
13rd step, in conjunction with the recharge of ground water, runoff direction, rock and water-bearing layer spatial distribution and measured each drill site
The head value Yi of different depth draw ground water regime flow-net diagram；
14th step calculates the hydraulic gradient and hydrodynamic condition of different depth according to ground water regime flow-net diagram；
15th step：It is different according to different depth rock core bedding fissure, the developmental state determination of structural fracture on different drill sites
The distributing position of the water barrier of drill site, and then judge the hydraulic connection between the different depth of different drill sites；
16th step, the tripping in water quality monitor in the drilling of each drill site, according in the measuring space hole of 2 meters of footage per round trip
PH, conductivity and temperature compared to bottom hole, and with the piezometric head value Yi of each round trip, confirm and verify ground water regime stream
The reasonability that net figure is drawn.
2. a kind of bedrock fracture ground water regime drift net according to claim 1 probes into method, it is characterised in that：It measures every
One round trip carries the mixing water level Xi before being bored under mixing water level Ti and next round trip after boring, and compares Xi and Ti to cranny development feelings
The judgement of condition carries out auxiliary verification.
3. a kind of bedrock fracture ground water regime drift net according to claim 1 probes into method, it is characterised in that：Each
Before secondary tripping in water-stop carries out head measurement, tripping in water pump is to designated depth, and to extracardiac pumping, until water quality becomes clear.
4. a kind of bedrock fracture ground water regime drift net according to claim 1 probes into method, it is characterised in that：In tripping in
Water-stop carry out head test when, when water-filled capsule be located at depth 100m with it is shallow when be forced into 1.1MPa, when water-filled capsule is located at
It is forced into 2.1MPa when depth between 100-200m, is forced into when depth of the water-filled capsule between 200-300m
3.1MP is forced into 4.1MPa when depth of the water-filled capsule between 300-400m, when water-filled capsule be located at 400-500m it
Between depth when be forced into 5.1Mpa.
5. a kind of bedrock fracture ground water regime drift net according to claim 1 probes into method, it is characterised in that：Using return
Turn boring method to be drilled.
6. a kind of bedrock fracture ground water regime drift net according to claim 5 probes into method, it is characterised in that：When probing
The bit diameter used is 127mm or 168mm.
7. a kind of bedrock fracture ground water regime drift net according to claim 1 probes into method, it is characterised in that：Tenth step
The condition that middle probing terminates is to punch water-bearing layer.
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