CN108106687A - A kind of bedrock underground water drift net containing soft interlayer probes into method and double-capsule water-stop - Google Patents
A kind of bedrock underground water drift net containing soft interlayer probes into method and double-capsule water-stop Download PDFInfo
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- CN108106687A CN108106687A CN201810129222.1A CN201810129222A CN108106687A CN 108106687 A CN108106687 A CN 108106687A CN 201810129222 A CN201810129222 A CN 201810129222A CN 108106687 A CN108106687 A CN 108106687A
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- water
- capsule
- peephole
- stop
- runoff
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
Abstract
The invention discloses a kind of bedrock underground water drift nets containing soft interlayer to probe into method, this method is to utilize completed hydrogeological peephole, it is edited and recorded according to rock core and divides crack section, karsts developing area, crushed zone, solution cavity, complete rock section, the distributing position of plasticity lithologic member, determine plastic rock in hole, the different depth of complete brittle rock, so that it is determined that sealing position, then the head value of different runoff sections is measured by double-capsule water-stop and water level tester, and then underground water drift net is drawn, analysis calculates the groundwater flow intensity of different depth.The present invention need not separately put into extra work and exclusively carry out ground water field prospecting again, and reduction of expenditure improves work efficiency.In addition the present invention need not carry out geological conditions artificial generalization, completely eliminate previous numerical computations or the error of laboratory experiment using the actual measurement head value for the interior different runoff sections that drill as foundation, and precision is reliable, and the achievement of acquirement meets field reality, has science.
Description
Technical field
It is specifically a kind of to be used to contain plasticity weak intercalated layer the present invention relates to groundwater science and engineering technical field
Bedrock underground water drift net probe into method and the double-capsule water-stop in method probed into for this.
Background technology
Life, production too busy to get away water resource, the especially northern area in surface water resources scarcity, the underground water of the mankind is past
Toward being the unique water source that can be supplied, it is well known that underground water be preservation in the ground hole in below ground certain depth and
Among crack, it is necessary to which carrying out special hydrogeologic prospecting can just find that water quality is excellent, underground water source supplier of abundant water
Class Sustainable Development and Utilization.
Since the sixties in last century, for the ground that seeks sources of water, forefathers are in many regional substantial amounts of hydrology of having constructed
Geological observation hole, these peepholes are engineers and technicians' observational study level of ground water and water quality " eyes ", and water-level observation is
Administrative department carries out Groundwater Resource Management, the scientific basis of underground water pollution prevention.But current domestic all fields
The water level of lower water peephole is all the mixing water level of multiple layers of position or multiple water-bearing sections.Due to the limitation of technical conditions, for a long time with
Come, people use the characteristics of motion of this mixing water level drawing area underground water drift net schematic diagram Study of The Underground water always, and mix
Heshui position drawing area underground water drift net schematic diagram is there are large error or even can draw the wrong conclusion.People's finding at present
To piezometric head be also only limitted in the glass tube in university's underground water Specialty Experiment, and excessively idealize, do not meet field more
Actual, there are serious errors.
For now, probing is to obtain the only resource of water-level observation data, but lithosphere is extremely complex to be
System, the formation lithology for storing underground water are not homogeneous isotropic, and the distribution of strata in horizontal or vertical direction is often all
It is heterogeneous anisotropic.When in probing, the formation lithology that runs into is different, especially run into drilling process containing mud stone,
Shale can generate a large amount of rock powder when the rock of plasticity weak intercalated layer, and rock powder necessarily blocks the crack of brittle rock, hole, rock
After powder blocks crack and the hole of brittle rock, hydraulic connection is caused to weaken, water level in borehole variation is insensitive, therefore has the plasticity soft
The drilling of weak interlayer water level measurements of each round trip in drilling process are inaccurate, it is necessary in probing completion and fully
After well-flushing, the true head that layer and section observation just can determine that each layer and section in hole is carried out.
The content of the invention
The present invention provides a kind of bedrock underground water drift nets containing soft interlayer regarding to the issue above to probe into method and double-capsule
Water-stop, this method are using completed hydrogeological peephole, edit and record division crack section, karsts developing area according to rock core, break
Broken band, solution cavity, complete rock section, the distributing position of plasticity lithologic member determine plastic rock in hole, the difference of complete brittle rock
Depth so that it is determined that sealing position, then measures the head value of different runoff sections by double-capsule water-stop and water level tester,
And then underground water drift net is drawn, analysis calculates the groundwater flow intensity of different depth.
The technical scheme adopted by the invention to solve the technical problem is that：
A kind of double-capsule water-stop, including end to end first water-stop, filter pipe and second are stopped successively from top to bottom
Hydrophone；
First water-stop includes the first central tube and first water-filling coaxially arranged with first central tube
Capsule, the upper/lower terminal of first central tube are fixedly installed the cylindrical barrel knot closed in one end open one end respectively
The first mounting ring of structure, the openend of two the first mounting rings is opposite, is provided in the first mounting ring and first
First slip ring of central drum's sealing connection is provided at least two on the outer end face of first slip ring and outwards runs through described first
First stud of mounting ring is provided with locking nut on first stud, is provided on the outer end face of first slip ring
One water injection pipe, and the water injection hole of first water injection pipe is provided on first slip ring, the first mounting ring
The through hole that the first water injection pipe is allowed to pass through, the upper/lower terminal of first water-filled capsule are pressed on described by the first slip ring respectively
On the medial surface of the first mounting ring；
Second water-stop includes the second central tube and second water-filling coaxially arranged with second central tube
Capsule, the upper/lower terminal of second central tube are fixedly installed the cylindrical barrel knot closed in one end open one end respectively
The second mounting ring of structure, the openend of two the second mounting rings is opposite, is provided in the second mounting ring and second
Second slip ring of central drum's sealing connection is provided at least two on the outer end face of second slip ring and outwards runs through described second
Second stud of mounting ring is provided with locking nut on second stud, is set on the outer end face of superposed second slip ring
It is equipped with the second water injection pipe, and the water injection hole of second water injection pipe is through superposed second slip ring, superposed second
The through hole that the second water injection pipe is allowed to pass through is provided in mounting ring, the upper/lower terminal of second water-filled capsule is respectively by second
Slip ring is pressed on the medial surface of the second mounting ring, and the lower end of second central tube is provided with sealing plate；
Superposed first water injection pipe is connected by the first high-pressure hose with hydraulic test pump, the first water injection pipe positioned at lower part
It is connected by the second high-pressure hose with the second water injection pipe.
Further, the upper end of first central tube is provided with the first swivel nut for being connected with drilling rod lower end, described
The second swivel nut of filter pipe upper end is fixedly connected with the lower end of first central tube, and the lower end of the filter pipe passes through the 3rd swivel nut
It is fixedly connected with the upper end of second central tube.
Further, the filter pipe is formed by multiple sub- filter pipes are end to end successively.
Further, the lateral surface of first slip ring and the second slip ring is in circular conical surface.
A kind of bedrock underground water drift net containing soft interlayer probes into method, comprises the following steps,
The first step chooses the first peephole as needed, and measures total mixing water level M1 in the first peephole；
Second step, observes the rock stratum distribution situation in the peephole, and edits and records division according to rock core and determine runoff section and complete
Whole section of distributing position and thickness；
3rd step measures the head value of the first runoff section,
3.1 according to the first runoff section, the first complete segment above the first runoff section and below the first runoff section
The second complete segment thickness adjustment double-capsule water-stop filter pipe length, make in the middle part of the first water-filled capsule to the second water-filling
Distance in the middle part of capsule is equal in the middle part of the first complete segment to the distance in the middle part of the second complete segment；
The double-capsule water-stop adjusted is fixed on the lower end of drilling rod by 3.2, and is passed through under drilling machine in peephole, makes
First water-filled capsule of one water-stop is located at the middle part of the first complete segment, and the second water-filled capsule of the second water-stop is complete positioned at second
Whole section of middle part；
3.3 hydraulic test pumps 1 carry out water-filling pressurization to water-filled capsule 31；
After 3.4 pressurizations reach specified pressure, the head value in drilling rod and the mixing water place value outside drilling rod are measured every 5min,
Until the head value stabilization in pipe, records head value Y1 in pipe at this time and manages outer mixing water place value Z1；
Double-capsule water-stop is taken out in 3.5 releases；
4th step repeats the operation of the 3rd step, along the head of the first peephole the i-th runoff of sequentially determining section from top to bottom
More than value Yi and the i-th runoff section mixing water place value Zi of each runoff section,
The data of acquirement have：
Head value Y1, Y2 of i-th runoff section, Y3 ..., Yi ..., Yn；
Mixing water place value Z1, Z2 of more than i-th runoff section each runoff section, Z3 ..., Zi ..., Zn；
5th step is painted according to the mixing water place value Zi of more than the head value Yi of i-th runoff section and the i-th runoff section each runoff section
The head value curve of the first peephole is made, judges the pressure-bearing characteristic of the first peephole different depth underground water, type；
6th step chooses at least one peephole successively along plane direction of groundwater flow, and successively in the peephole of selection
Inside repeat operation of the first step to the 5th step；
7th step draws Plane Fluid Field figure according to total mixing water level Mi of each peephole；
8th step determines herein below according to the Plane Fluid Field figure drawn in the 7th step：
Ground water movement direction and supply and discharge well position in 8.1 planes；
8.2 calculate hydraulic gradient, flow velocity size and cross-section of river run-off；
9th step, with reference to the recharge of ground water, runoff direction, rock and water-bearing layer spatial distribution and measured each observation
The head value of the different runoff sections in hole draws ground water regime flow-net diagram；
Tenth step, according to ground water regime flow-net diagram,
10.1 calculate the hydraulic gradient and hydrodynamic condition of different depth；
10.2 determine the hydraulic connection between different depth；
Water quality monitor is respectively adopted in each peephole in 11st step, according to being dissolved in 2 meters of measuring space hole
Oxygen, electrical conductivity and temperature are to bottom hole, and by the piezometric head value Yi ratios of the dissolved oxygen of measure, electrical conductivity and temperature and respective depth
It is right, further confirm that and verify the reasonability that ground water regime flow-net diagram is drawn.
Further, in step 3.3, when water-filled capsule 31 be located at depth 100m with it is shallow when be forced into 1.1MPa, when filling
2.1MPa is forced into during depth of the capsule with diuresis promoting function 31 between 100-200m, when depth of the water-filled capsule 31 between 200-300m
3.1MP is forced into when spending, 4.1MPa is forced into when depth of the water-filled capsule 31 between 300-400m, when water-filled capsule 31
5.1Mpa is forced into during depth between 400-500m.
Further, the condition of head value stabilization is no more than for head value luffing in continuous 30 minutes pipes in step 3.4
2mm。
The beneficial effects of the invention are as follows：
1st, the present invention need not separately put into again extra work exclusively carry out ground water field prospecting can obtain essence
Accurate underground water drift net, reduction of expenditure improve work efficiency, and enrich the exploratory techniques method of hydrogeology.
2nd, using the actual measurement head value of different runoff sections in drilling as foundation, artificially general need not be carried out to geological conditions
Change, there is no calculation errors, completely eliminate previous numerical computations or the error of laboratory experiment, and precision is reliable, the achievement symbol of acquirement
It is actual to close field, there is science.
3rd, scientific in principle, method be simple, convenient disassembly, easy to operate, and data easily obtain, and have stronger practicability.
4th, the spacing in the double-capsule water-stop in the present invention between the first water-filled capsule and the second water-filled capsule can lead to
The connection quantity of toning entire filter water pipe is adjusted, and so as to meet the thickness of different runoff sections, has more extensive adaptability.
Description of the drawings
Fig. 1 is structure diagram when double-capsule water-stop uses；
Fig. 2 is the structure diagram of double-capsule water-stop；
Fig. 3 is the top view (removing the first swivel nut) of the first water-stop；
Fig. 4 is the A-A sectional views in Fig. 3；
Fig. 5 is the internal structure schematic diagram of the second water-stop；
Fig. 6 is the head value curve of the first peephole；
Fig. 7 is the Plane Fluid Field figure in Quan Cheng parks-Baotu Spring region；
Fig. 8 is ground water regime flow-net diagram.
In figure：1- hydraulic test pumps, the first high-pressure hoses of 2-, the second high-pressure hoses of 3-, the first water-stops of 4-, the first water-fillings of 41-
Capsule, the first central tubes of 42-, 43- the first mounting rings, the first slip rings of 44-, the first studs of 441-, the first water injection pipes of 442-, 45-
First swivel nut, the second water-stops of 5-, the second water-filled capsules of 51-, the second central tubes of 52-, 53- the second mounting rings, 54- second are slided
Ring, the second studs of 541-, the second water injection pipes of 542-, 55- sealing plates, 6- drilling rods, 7- water level testers, 71- probes, 8- filter pipes,
The second swivel nuts of 81-, the 3rd swivel nuts of 82-.
Specific embodiment
Due to traditional water-stop be for drilling during, when in by water-stop tripping in hole, it is ensured that water-filling
The lower section of capsule is only there are one runoff section, there is no the problem of the interference of other runoff sections, therefore can with probing progress by
One measures the head value of different depth runoff section.And the present invention is to observe different footpaths in the hydrogeological peephole completed
The head of section is flowed, when needing to observe the head of superposed runoff section, traditional water-stop is can not to avoid lower part runoff
The interference of section, can not complete accurately to measure.For this purpose, the present invention provides one kind in completed hydrogeological peephole
Measure the double-capsule water-stop of different runoff section head values.
As shown in Fig. 2, a kind of double-capsule water-stop includes the first water-stop 4 successively from top to bottom, filter pipe 8 and second stops
Hydrophone 5 is evenly equipped with multiple leakage holes on the side wall of the filter pipe 8.
As shown in Figure 2, Figure 3 and Figure 4, first water-stop includes the first central tube 42, first central tube 42
External upper/lower terminal is fixedly installed the first mounting ring 43 coaxially arranged with first central tube 42 respectively.It is described
The first mounting ring 43 be in the closing of one end open one end cylindrical barrel structure, and the opening of two the first mounting rings 43
End is opposite.The first slip ring 44 that can be slided up and down along first central tube 42, institute are provided in the first mounting ring 43
Sealing ring (not shown) is provided between the first slip ring 44 and the first central tube 42 stated.The outer end of first slip ring 44
Along the circumferential direction be uniformly arranged on face at least two first studs 441 (one side opposite using two first slip rings 44 as
Inside), and first stud 441, outwards through the first mounting ring 43, first stud 441 is located at the first peace
Locking nut is provided on the part in 43 outside of dress ring.The first water injection pipe 442 is provided on the outer end face of first slip ring 44,
And the water injection hole of first water injection pipe 442 is inwardly set on first slip ring 44, the first mounting ring 43
There is the through hole that the first water injection pipe 442 is allowed to pass through.First is provided between 43 and first slip ring 44 of the first mounting ring to fill
Capsule with diuresis promoting function, the upper/lower terminal of first water-filled capsule are pressed on the circle of the first mounting ring 43 by the first slip ring 44 respectively
On cylindricality medial surface.The upper end of first central tube 42 is fixedly installed the first swivel nut 45, the brill by welding
The lower end of bar 6 is provided with and the 45 matched external screw thread of the first swivel nut.
As shown in figure 5, second water-stop includes the second central tube 52, outside second central tube 52 it is upper,
Lower both ends are fixedly installed the second mounting ring 53 coaxially arranged with second central tube 52 respectively.Second installation
Ring 53 is in the cylindrical barrel structure of one end open one end closing, and the openend of two the second mounting rings 53 is opposite.Institute
The second slip ring 54 that can be slided up and down along second central tube 52 is provided in the second mounting ring 53 stated, described second slides
Sealing ring (not shown) is provided between 54 and second central tube 52 of ring.On the outer end face of second slip ring 54 circumferentially
Direction is uniformly arranged at least two second studs 541 (using the opposite one side of two second slip rings 54 as inside), and institute
For the second stud 541 stated outwards through the second mounting ring 53, second stud 541 is located at 53 outside of the second mounting ring
Part on be provided with locking nut.The second water injection pipe 542, and institute are provided on the outer end face of superposed second slip ring 54
The water injection hole for stating the second water injection pipe 542 is inwardly set on second slip ring 54, superposed the second mounting ring 53
There is the through hole that the second water injection pipe 542 is allowed to pass through.Second is provided between 53 and second slip ring 54 of the second mounting ring to fill
Capsule with diuresis promoting function, the upper/lower terminal of second water-filled capsule are pressed on the circle of the second mounting ring 53 by the second slip ring 54 respectively
On cylindricality medial surface.The lower end of second central tube 52 is fixedly installed by welding is useful for the second central tube of closure
52 sealing plate 55.
As shown in Fig. 2, the upper/lower terminal of the filter pipe 8 is fixedly installed the second swivel nut by welding respectively
81 and the 3rd swivel nut 82, the lower end of the first central tube 42 of first water-stop 4 is provided with and 81 phase of the second swivel nut
The external screw thread of cooperation.The upper end of second central tube 52 of second water-stop 5 is provided with to match with the 3rd swivel nut 82
The external screw thread of conjunction.
As shown in Fig. 2, superposed first water injection pipe 442 of first water-stop 4 by the first high-pressure hose 2 with
Hydraulic test pump 1 is connected, and the first water injection pipe 442 positioned at lower part of first water-stop 4 passes through the second high-pressure hose 3 and described the
Second water injection pipe 542 of two water-stops 5 is connected.
Further, since in actual test process, the thickness of runoff section is different.For this purpose, the filter pipe 8 by
Multiple sub- filter pipes are end to end successively to be formed.As a kind of specific embodiment, in the present embodiment adjacent sub- filter pipe it
Between using be threadedly coupled by the way of be fixedly connected.
Further, in order to ensure the reliable compression of water-filled capsule, first slip ring 44 and the second slip ring 54 it is outer
Side is in the small circular conical surface of the big outer diameter of inner end diameter.
As a kind of specific embodiment, the quantity of the first stud 441 and the second stud 541 described in the present embodiment is equal
For 3.
In order to facilitate understanding, method now is probed into a kind of bedrock underground water drift net containing soft interlayer by taking Jinan City as an example, into
Row is discussed in detail.A kind of bedrock underground water drift net containing soft interlayer probes into method, comprises the following steps：
The first step needs to choose a peephole according to actual research, describes, be now defined as the peephole for convenience
First peephole, and the probe 71 for passing through water level tester 7 measures total mixing water level M1 in the first peephole.
As a kind of specific embodiment, the first selected peephole is Quan Cheng parks peephole in the present embodiment.
Total mixing water level described herein is total mixing water level of all runoff sections in the peephole.
Second step, observes the rock stratum distribution situation in the peephole, and edits and records division according to rock core and determine runoff section and complete
Whole section of distributing position and thickness.
Runoff section described herein includes crack section, karst developmental section, crushed zone and solution cavity；The complete segment includes
Complete rock section (abbreviation complete segment) and plasticity lithologic member (abbreviation plasticity rock section).
3rd step measures the head value of the first runoff section,
In order to facilitate description, the runoff section positioned at the top is positioned as the first runoff section, and the footpath along peephole down
Stream section be followed successively by second and third, four ... runoff sections.Similarly, the complete segment positioned at the top is defined as the first complete segment, and along
The complete segment of peephole down successively second and third, four ... complete segments.
3.1 according to the first runoff section, the first complete segment above the first runoff section and below the first runoff section
The second complete segment thickness adjustment double-capsule water-stop filter pipe 8 length, make the middle part of the first water-filled capsule 41 to second
The distance at 51 middle part of water-filled capsule is equal in the middle part of the first complete segment to the distance in the middle part of the second complete segment.
The double-capsule water-stop adjusted is fixed on the lower end of drilling rod 6 by 3.2, and is passed through under drilling machine in peephole, is made
First water-filled capsule 41 of the first water-stop 4 is located at the middle part of the first complete segment, the second water-filled capsule 51 of the second water-stop 5
In the middle part of the second complete segment.
3.3 hydraulic test pumps 11 carry 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
1.1MPa is depressed into, 2.1MPa is forced into when depth of the water-filled capsule 31 between 100-200m, when water-filled capsule 31 is located at
3.1MP is forced into during 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.
After 3.4 pressurizations reach specified pressure, the head value in drilling rod 6 and the mixing water level outside drilling rod 6 are measured every 5min
It is worth, the head value stabilization in pipe, i.e., head value luffing is no more than 2mm in continuous 30 minutes pipes, records head in pipe at this time
The value Y1 and outer mixing water place value Z1 of pipe.
Double-capsule water-stop is taken out in 3.5 releases.
4th step, along the first peephole from top to bottom the head value Yi of each runoff section of sequentially determining and the runoff section with
The mixing water place value Zi of upper each runoff section, determination step is identical with the 3rd step,
The data of acquirement have：
Head value Y1, Y2 of i-th runoff section, Y3 ..., Yi ..., Yn；
Mixing water place value Z1, Z2 of more than i-th runoff section each runoff section, Z3 ..., Zi ..., Zn.
Herein when i is equal to 1, Z1 expressions are total mixing water level, i.e. Z1 is equal to M1.
5th step, according to the mixing water level of more than the head value Yi of i-th runoff section of measure and the i-th runoff section each runoff section
Value Zi draws the head value curve of the first peephole, as shown in fig. 6, and passing through the head value curve of the first peephole of drafting and sentencing
The pressure-bearing characteristic of disconnected first peephole different depth underground water, type.
6th step chooses at least one peephole successively along plane direction of groundwater flow, and successively in the peephole of selection
Inside repeat operation of the first step to the 5th step.
As a kind of specific embodiment, the present embodiment chooses peephole at two successively along plane direction of groundwater flow, i.e.,
Second peephole and the 3rd peephole, wherein second peephole chooses cultural road peephole, the 3rd peephole
Choose Baotu Spring peephole.
7th step, according to total mixing water level M1, M2 of the first peephole, the second peephole and the 3rd peephole observed
The Plane Fluid Field figure in Quan Cheng parks-Baotu Spring region is drawn with M3, as shown in Figure 7.
8th step determines herein below according to the Plane Fluid Field figure in the Quan Cheng parks-Baotu Spring region drawn in the 7th step：
Ground water movement direction and supply and discharge well position in 8.1 planes；
8.2 calculate hydraulic gradient, flow velocity size and cross-section of river run-off,
Hydraulic gradient
Flow velocity Vh=Kh·Jh
Run-off Qh=KhAhJh
In formula, QhFor horizontal direction section flow m3/s；
AhFor unit width discharge section area m2；
H1、H2For contour of water table m；
LhFor H1、H2Between streamline spacing m；
KhFor the comprehensive infiltration coefficient m of drilling.
9th step is observed with reference to the recharge of ground water, runoff direction, rock and water-bearing layer spatial distribution and measured first
The head value of the different runoff sections in hole, the second peephole and the 3rd peephole draws ground water regime flow-net diagram, as shown in Figure 8.
Tenth step, according to ground water regime flow-net diagram,
10.1 calculate the hydraulic gradient and hydrodynamic condition of different depth,
By Darcy formulaIt can deriveSince Q, K are unknown numbers, stillThan
Value is constant, be may be employedCharacterize 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 waited between head lines；
L is two spacing m waited between head lines；
K is the infiltration coefficient m of runoff zones；
10.2 determine the hydraulic connection between different depth, and the size for combining runoff intensity is to determine bedrock fracture underground
Artificial recharge position, mining area water damage prevention passage and the measure of crevice water pollution prevention of water system provide scientific basis.
IN-STU multi-parameter water is respectively adopted in the first peephole, the second peephole and the 3rd peephole in 11st step
Matter monitor, according to dissolved oxygen, electrical conductivity and temperature in 2 meters of measuring space hole to bottom hole, and by the dissolved oxygen of measure, conductance
The piezometric head value Yi of rate and temperature and respective depth is compared, and further confirms that and verify the conjunction that ground water regime flow-net diagram is drawn
Rationality.
Claims (7)
1. a kind of double-capsule water-stop, it is characterised in that：Including end to end first water-stop, filter pipe successively from top to bottom
With the second water-stop；
First water-stop includes the first central tube and first water-filled capsule coaxially arranged with first central tube,
The upper/lower terminal of first central tube is fixedly installed the of the cylindrical barrel structure in the closing of one end open one end respectively
One mounting ring, the openend of two the first mounting rings is opposite, is provided in the first mounting ring and the first central tube
The first slip ring being tightly connected is provided at least two on the outer end face of first slip ring and outwards runs through the first mounting ring
The first stud, be provided with locking nut on first stud, the first water filling be provided on the outer end face of first slip ring
Pipe, and the water injection hole of first water injection pipe is through first slip ring is provided with permission the in the first mounting ring
The through hole that one water injection pipe passes through, the upper/lower terminal of first water-filled capsule are pressed on first peace by the first slip ring respectively
On the medial surface for filling ring；
Second water-stop includes the second central tube and second water-filled capsule coaxially arranged with second central tube,
The upper/lower terminal of second central tube is fixedly installed the of the cylindrical barrel structure in the closing of one end open one end respectively
Two mounting rings, the openend of two the second mounting rings is opposite, is provided in the second mounting ring and the second central tube
The second slip ring being tightly connected is provided at least two on the outer end face of second slip ring and outwards runs through the second mounting ring
The second stud, be provided with locking nut on second stud, be provided on the outer end face of superposed second slip ring
Two water injection pipes, and the water injection hole of second water injection pipe is through superposed second slip ring, superposed the second mounting ring
On be provided with and allow the through hole that passes through of the second water injection pipe, the upper/lower terminal of second water-filled capsule is respectively by the second slip ring pressure
Tightly on the medial surface of the second mounting ring, the lower end of second central tube is provided with sealing plate；
Superposed first water injection pipe is connected by the first high-pressure hose with hydraulic test pump, and the first water injection pipe positioned at lower part passes through
Second high-pressure hose is connected with the second water injection pipe.
2. a kind of double-capsule water-stop according to claim 1, it is characterised in that：The upper end of first central tube is set
The first swivel nut being connected with drilling rod lower end is useful for, the lower end of second swivel nut of filter pipe upper end and first central tube is consolidated
Fixed connection, the lower end of the filter pipe is fixedly connected by the 3rd swivel nut with the upper end of second central tube.
3. a kind of double-capsule water-stop according to claim 1, it is characterised in that：The filter pipe is by multiple sub- drainages
Pipe is end to end successively to be formed.
4. a kind of double-capsule water-stop according to claim 1, it is characterised in that：First slip ring and the second slip ring
Lateral surface be in circular conical surface.
5. a kind of bedrock underground water drift net containing soft interlayer probes into method, it is characterised in that：Comprise the following steps,
The first step chooses the first peephole as needed, and measures total mixing water level M1 in the first peephole；
Second step observes the rock stratum distribution situation in the peephole, and edits and records division according to rock core and determine runoff section and complete segment
Distributing position and thickness；
3rd step measures the head value of the first runoff section,
3.1 according to the first runoff section, the first complete segment above the first runoff section and below the first runoff section
The length of the filter pipe of the thickness adjustment double-capsule water-stop of two complete segments, makes in the middle part of the first water-filled capsule to the second water-filled capsule
The distance at middle part is equal in the middle part of the first complete segment to the distance in the middle part of the second complete segment；
The double-capsule water-stop adjusted is fixed on the lower end of drilling rod by 3.2, and is passed through under drilling machine in peephole, makes first to stop
First water-filled capsule of hydrophone is located at the middle part of the first complete segment, and the second water-filled capsule of the second water-stop is located at the second complete segment
Middle part；
3.3 hydraulic test pumps 1 carry out water-filling pressurization to water-filled capsule 31；
After 3.4 pressurizations reach specified pressure, the head value in drilling rod and the mixing water place value outside drilling rod are measured every 5min, until
Head value stabilization in pipe records head value Y1 in pipe at this time and manages outer mixing water place value Z1；
Double-capsule water-stop is taken out in 3.5 releases；
4th step repeats the operation of the 3rd step, along the head value Yi of the first peephole the i-th runoff of sequentially determining section from top to bottom
With the mixing water place value Zi of more than i-th runoff section each runoff section,
The data of acquirement have：
Head value Y1, Y2 of i-th runoff section, Y3 ..., Yi ..., Yn；
Mixing water place value Z1, Z2 of more than i-th runoff section each runoff section, Z3 ..., Zi ..., Zn；
5th step draws the according to the mixing water place value Zi of more than the head value Yi of i-th runoff section and the i-th runoff section each runoff section
The head value curve of one peephole judges the pressure-bearing characteristic of the first peephole different depth underground water, type；
6th step chooses at least one peephole, and the weight in the peephole of selection successively successively along plane direction of groundwater flow
Operation of the first step to the 5th step is carried out again；
7th step draws Plane Fluid Field figure according to total mixing water level Mi of each peephole；
8th step determines herein below according to the Plane Fluid Field figure drawn in the 7th step：
Ground water movement direction and supply and discharge well position in 8.1 planes；
8.2 calculate hydraulic gradient, flow velocity size and cross-section of river run-off；
9th step, with reference to the recharge of ground water, runoff direction, rock and water-bearing layer spatial distribution and measured each peephole
The head value of different runoff sections draws ground water regime flow-net diagram；
Tenth step, according to ground water regime flow-net diagram,
10.1 calculate the hydraulic gradient and hydrodynamic condition of different depth；
10.2 determine the hydraulic connection between different depth；
Water quality monitor is respectively adopted in each peephole in 11st step, according to dissolved oxygen, electricity in 2 meters of measuring space hole
Conductance and temperature are compared to bottom hole, and by the piezometric head value Yi of the dissolved oxygen of measure, electrical conductivity and temperature and respective depth, into
One step confirms and verifies the reasonability that ground water regime flow-net diagram is drawn.
6. a kind of bedrock underground water drift net containing soft interlayer according to claim 5 probes into method, it is characterised in that：In step
In rapid 3.3, when water-filled capsule 31 be located at depth 100m with it is shallow when be forced into 1.1MPa, when water-filled capsule 31 be located at 100-200m it
Between depth when be forced into 2.1MPa, be forced into 3.1MP when depth of the water-filled capsule 31 between 200-300m, work as water-filling
4.1MPa is forced into during depth of the capsule 31 between 300-400m, when depth of the water-filled capsule 31 between 400-500m
When be forced into 5.1Mpa.
7. a kind of bedrock underground water drift net containing soft interlayer according to claim 5 probes into method, it is characterised in that：Step
The condition of head value stabilization is no more than 2mm for head value luffing in continuous 30 minutes pipes in 3.4.
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| CN111189507A (en) * | 2020-03-10 | 2020-05-22 | 黄河勘测规划设计研究院有限公司 | Karst water stratification discrimination and underground water level observation method |
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