CN109989711A - A kind of microelement method for improving surface orientation and boring with layer rate - Google Patents
A kind of microelement method for improving surface orientation and boring with layer rate Download PDFInfo
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- CN109989711A CN109989711A CN201910294510.7A CN201910294510A CN109989711A CN 109989711 A CN109989711 A CN 109989711A CN 201910294510 A CN201910294510 A CN 201910294510A CN 109989711 A CN109989711 A CN 109989711A
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/223—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
Abstract
The invention discloses a kind of raising surface orientations to bore the microelement method with layer rate, including takes protolith to be respectively layered sample, and carry out Background Values of Trace Elements test to sample；Rock powder to be sentenced (bits) sample is taken, the micronutrient levels of rock powder (bits) is tested；Rock powder (bits) microelement and background values of elements to be sentenced are compared, and then which layering of the rock powder (bits) from protolith identified；Bit location is determined in conjunction with parameters such as sampling timing, flushing flow velocities, and drilling direction is instructed to approach to slip casting target formation center.Beneficial effects of the present invention: ensure that surface orientation bores slip casting " with layer rate " and reaches design requirement.Technology rock powder (bits) the microelement source resolution, the continuous drill bit that monitors carry out the adjustment of drill bit direction with layer state in due course, can ensure that design slip casting with layer rate, is not influenced by depth of stratum and change of pitch angle to greatest extent.
Description
Technical field
The present invention relates to a kind of raising surface orientations to bore the microelement method with layer rate, accurately surface orientation to be instructed to bore
Drilling and slip casting are carried out immediately following destination layer, it is ensured that design grouting for water blocking effect.
Background technique
In a set of carbonate aquifer of the following preservation of North China Coalfield coal-bearing series of permo-carboniferous bottom plate, by the Carboniferous Period
Taiyuan Forma-tion limestone (referred to as " too grey ") and ordovician limestone (referred to as " ash difficult to understand ") composition, it is too grey to be referred to as " bottom plate ash with ash difficult to understand
Rock ".The bottom plate limestone watery is strong, and hydraulic pressure is high, once it is prominent, it breaks with tremendous force, water inrush quantity is big, can cause in a short period of time
Flood well accident.
In terms of statistics, 95% or more North China Coalfield it is super-huge flood well accident because of bottom plate limestone water gushing water caused by.
As Luan Fangezhuang Mine 1984 " 6.2 " bottom plate limestone watered-out well accidents, maximal water*.inrush quality 123180m are opened in Hebei3/ h, dead 11
People；Appoint building mine 1996 " 3.4 " bottom plate limestone watered-out well accidents, maximal water*.inrush quality 34571m in Anhui Province north3/h；Northern Huaihe River Anhui
Peach garden mine 2013 " 2.3 " bottom plate limestone watered-out well accidents, maximal water*.inrush quality 29000m3/ h, 1 people are wrecked.Once flood well thing
It is " extinction " therefore for coal mine, it is single from economic loss, usually in terms of several hundred million members even billions of members.
Therefore, the prevention and treatment of bottom plate limestone water water damage is always the emphasis of North China Coalfield mine geological hazards.
It will be seen from figure 1 that North China Coalfield Permian Period Shanxi group (P1s) the following group coal (coal seam 10#) bottom plate and it is too grey between send out
It educates one layer of water-resisting floor (i.e. original bottom every), average thickness 50m (i.e. M in Fig. 20(i.e. original bottom is every thickness), lithology are marine facies
Mud stone and sand-mud interbed；The underlying strata of the water barrier is the Carboniferous Period too grey (C3t), average thickness 120m, by 12~13 layers of thin layer
Sand shale interlayer between limestone and grey rock stratum is formed, wherein three ash (hereinafter referred to as " L3Ash ") and four ash (L4) thickness is larger,
Karst, crack are relatively developed, and accidental solution cavity, watery is stronger, constitutes a serious threat to 10# safely mining of coalbed；Too grey stratum
Underlying strata is ash difficult to understand, and thickness is greater than 500m, the horse man ditch group (O of superficial part2m) limestone solution cave, crack are extremely developed, or even hair
Genesis of Karst Subsided Column is educated, and supply source is abundant, be " boundless ocean " that North China Coalfield coal measure strata underlies, the coal seam 10# is pacified
The threat that standard-sized sheet is adopted is the most serious.
It mines in bottom plate limestone water, national " mine geological hazards regulation ", which has water bursting coefficient Ts (such as following formula), strictly to be wanted
It asks, i.e., by structure destruction block, Ts is not more than 0.06Mpa/m；In normal block, Ts is not more than 0.1Mpa/m.
In formula: head pressure/Mpa (Fig. 2) that P-water-resisting floor is born；
M-water-resisting floor thickness/m.
In order to eliminate the threat of bottom plate limestone water, water control technique mainly has two o'clock:
(1) Draining hook is exactly by, to the unrestrained hole of bottom plate limestone construction, discharging water, by bottom plate limestone water in underground
The pressure P for acting on seat earth water barrier is reduced to safety value；But due to exist drain at high cost, serious destruction water resource and
Ground water regime balances and cannot ensure that water damage or water damage accident does not occur, thus this method has been rarely employed for many years.
(2) to Taiyuan Forma-tion L3Ash implements surface orientation and bores grouting, makes the thickness of water-resisting floor by original thickness
Spend M0Increase to the thickness M=M after reinforcing0(wherein, △ M is from L to+△ M1To L3Between the sum of each lift height, shown in Fig. 1
△ M be 18.33m).Mine geological hazards are it was verified that 1. to L3Water-resisting floor after grey grouting and reinforcing is with a thickness of M (=M0+
△ M), the high hydraulic pressure (P) of bottom plate limestone can be effective against；L is passed through 2. having blocked simultaneously3(such as water guide is disconnected for the conduit pipe of ash
Layer, Genesis of Karst Subsided Column etc., Fig. 4 and Fig. 5)；3. anti-riparian work cost is minimum under the premise of ensuring safety.Therefore, to L3Ash
Grouting is carried out, can thoroughly eliminate the threat of bottom plate limestone water, and technical economic benefit is most ideal, this is current
The bottom plate limestone water control method that North China mining area generallys use.Therefore L3Ash is confirmed as the destination layer that surface orientation bores slip casting.
Surface orientation bores slip casting, and validity depends primarily on the slip casting " with layer rate " of Directional Drilling.It is so-called to refer to " with layer rate "
The track of injected hole should whole or big portion's (85% or more) fall within slip casting destination layer, otherwise there are many hidden danger.
For North China Coalfield bottom plate limestone water harnessing, slip casting destination layer is set as L more3Ash.Just think, if drilling track position
More than destination layer, i.e., in L2-3Interlayer and to creep into the position of upper layer and slip casting, then △ M is less than normal, so that entire water-resisting floor is thick
Spend M (=M0+ △ M) it is insufficiently resistant to the high hydraulic pressure (P) of bottom plate limestone water, the especially stronger L of watery3Ash and four ash (L4)
The coal seam distance 10# is closer, adopts and causes coal seam floor failure, it is easy to water inrush from floor occur；But if drilling track is located at mesh
It marks under layer, i.e., in L3-4Interlayer and with lower layer position drilling and slip casting, then the stronger destination layer L of watery3Ash is to the coal seam 10#
The threat of safe working is not eliminated, and the probability of Water Inrush is still higher, and the increase of slip casting hole depth, probing and slip casting
Cost also can significantly increase.
So far, whether surface orientation bores in construction, judge drilling with layer (destination layer L3Ash) foundation be protolith
Each lift height and formation dip make drill bit with layer by adjusting drill bit positioning system, but used rock stratum is thick during this
Degree and formation dip are considered as fixed value.However, as it can be seen from table 1 the thickness change that is respectively layered of protolith is larger, some layerings
Thickness minimum value and maximum value differ by more than 1 order of magnitude.And in the case where structure development, not only depth of stratum changes meeting
It is bigger, and formation dip can also change.Therefore, because depth of stratum and formation dip variation are greatly, positioned by drill bit
The drilling direction of system call interception not necessarily in actual destination layer or up or down even deviate from it is far, cannot accurately will bore
Head is adjusted to design target area (i.e. destination layer L3Ash), potential hidden danger is extremely serious.It is then desired to look for another way, ground is solved
Directional Drilling slip casting is improved to the maximum extent with layer problem with layer rate.
The too grey each lift height feature list of 1 Northern Huaihe River Anhui coalfield mine of table
Surface orientation bores slip casting hole construction method as centreless drilling, i.e., by drilling bit grinding rock stratum pore-forming, then carries out slip casting.
Drilling needs to be used continuously during the grinding process flushing liquor, and effect to drill bit first is that cool down；Second is that taking to ground for rock powder (bits)
Face.At this moment, rock powder (bits) sample can be continuously taken in the flushing liquor turbid solution for being recycled to ground, tests its microelement, reflected
Not Chu rock powder (bits) whether come from destination layer L3Ash, with guidance drilling with layer (L3Ash) construction.Therefore, the present invention is exactly using former
The different othernesses for being layered contained microelement in rock, to monitor drilling track, it is ensured that slip casting reaches design requirement (i.e. with layer rate
Drilling track has 85% or more in destination layer L3In ash).
Entire Carboniferous Strata lasts about 60,000,000 years, the Carboniferous Period (C in evening therein3) at least 20,000,000 years geology goes through
History, the interlayer sedimentation time between each thin layer limestone and limestone are also in terms of 1000000 years.Within very long earth history period, respectively
The micronutrient levels of layering has differences certainly, this is tracked to rock powder (bits) microelement using taking in drilling process
Drilling trajectory provides theoretical foundation.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
Technical problem to be solved by the present invention lies in: how to identify thin layer limestone and how to instruct drilling track most absolutely
It scolds in slip casting destination layer (L3Ash) in, the technical problem low with layer rate is bored to solve existing surface orientation to the maximum extent.
The present invention is to solve above-mentioned technical problem by the following technical programs.A kind of raisings surface orientation of present invention brill with
The microelement method of layer rate, comprising the following steps:
SO1: drilling is surveyed using coal mine benefit, multiple layerings of protolith are sampled, and microelement background is carried out to sample
Value test, further according to the Background Values of Trace Elements that protolith is respectively layered, establishes each order training method data (i.e. " known research object ")
Discriminant function；
SO2: it is bored in drilling process in surface orientation, continuously takes the flushing liquor turbid sample for returning to ground, stand hinterland
The continuous rock powder or landwaste for fishing for precipitating, and test the micronutrient levels of rock powder or landwaste；
SO3: by the test number (i.e. micronutrient levels) of rock powder or landwaste wait sentence according to substitute into discriminant function after, and with it is each
The discriminant function of order training method data compares, and then identifies which layering of rock powder or landwaste from protolith；
SO4: on the basis of rock powder or landwaste source resolution, drill bit position is determined in conjunction with parameters such as sampling timing, flushing flow velocities
It sets；If drill bit in slip casting destination layer, continues to creep by set direction；If not existing, the drilling direction of drill bit is adjusted, it is made
It is approached to destination layer center, to improve with layer rate, reaches design slip casting effect.
The present invention, can in conjunction with parameters such as sampling timing, flushing flow velocities by the source resolution to rock powder (bits) microelement
With the drop point of accurate judgement drill bit.The technology continuously monitors drill bit with layer state, carries out the adjustment of drill bit direction in due course, can maximum limit
Degree ensures that design slip casting with layer rate, is not influenced by depth of stratum and change of pitch angle, more beneficial with layer method of adjustment than existing.
Preferably, in the step S01, each order training method data (i.e. " known research is established according to Fisher criterion
Object ") discriminant function Fi', wherein i=1,2 ..., m.
Preferably, a kind of microelement method for improving surface orientation and boring with layer rate according to claim 2, it is special
Sign is, in the step S02, rock powder to be sentenced or landwaste test data (i.e. microelement test value) is substituted into Fisher and sentenced
In other function, and calculate functional value Fi, wherein i=1,2 ..., m, and with each order training method data (i.e. " known research object ")
Respective function value Fi', wherein i=1,2 ..., m comparison take the two gap reckling, and then identify that rock powder or landwaste come from
Which layering of protolith.
Preferably, the sampling layer in the step S01 includes the lower part of original floor water barrier (referred to as " original bottom every ")
Sand shale interlayer between the rock stratum 5m, multiple continuous thin layer limestones and adjoining platelet limestone, in multiple continuous thin layer limestones
Including target formation, that is, L3Ash.
Preferably, the upper, middle and lower of the sampling layer in the step S01 respectively take one group of sample, and test its microelement
Background value.
Preferably, the microelement tested in the step S01 and S02 include Ba, Cd, Co, Cr, Mn, Mo, Ni, Sr, V,
Th, Ag, Al, As, Ce, Cu, La, Pr, Sb, Se, Ti, Zn, or be also more conducive to other of rock powder (bits) source resolution
Microelement.
Preferably, concrete operations in the step S02 are as follows: drilling construction close to original bottom every the lower part rock stratum 5m when,
The flushing liquor muddiness sample for returning to ground is continuously taken, and is numbered, timing, standing, while the flow velocity v of calibration of flush liquid, so as to root
The corresponding relationship between taken flushing liquor muddiness sample and drill bit position is determined according to timing and v, then fishes for precipitating successively
Rock powder (bits), carry out microelement test.
Preferably, the instrument tested to rock powder (bits) microelement is Portable X RF Fluorescence Spectrometer and tablet press machine,
More intelligentized instrument to test more convenient, and field engineering technical staff slightly gives training and can grasp.
The present invention has the advantage that compared with prior art
(1) by the source resolution to rock powder (bits) microelement, drill bit can continuously be monitored with the drop point of accurate judgement drill bit
With layer state, the adjustment of drill bit direction is carried out in due course, can ensure design slip casting to greatest extent with layer rate, not by depth of stratum and inclination angle
The influence of variation is more beneficial with layer method of adjustment than existing；
(2) more intelligentized instrument to test more convenient, and field engineering technical staff slightly gives training and can grasp.
Detailed description of the invention
Fig. 1 is that a kind of raising surface orientation of the embodiment of the present invention is bored with the coal seam certain mine 10# in the microelement method of layer rate
Floor strata composite columnar section；
Fig. 2 is floor strata structure and water bursting coefficient calculating parameter schematic diagram；
Fig. 3 is destination layer L3The microelement identification step block diagram of ash；
Fig. 4 is that surface orientation is bored along L3Ash construction schematic diagram (section)；
Fig. 5 is that surface orientation is bored along L3Ash construction schematic diagram (solid).
In Fig. 1: P1s- morning Permian Period Shanxi group；C3t- evening Carboniferous Taiyuan group；C3b- evening Carboniferous Period Benxi group；O2m—
Middle Ordovician Epoch horse man ditch group；L1~L13- it is number of the first layer limestone to the 13rd layer of limestone；Ln-n+1- it is an ash (Ln) with
Two ash (Ln+1) between sand shale interlayer, wherein n 1,2,3,4,5,6,7,8,9,10,11,12.
Original bottom is every thickness M0, original bottom every the lower part rock stratum 5m Ho, first time Drill Hole Casing K1, second drill under
Pipe K2,10# coal seam MC, rock powder sample bucket 1, surface orientation bores and slip casting station 2, air way 3, machine lane 4.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment carries out under the premise of the technical scheme of the present invention
Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment one:
As shown in Figs. 1-5, a kind of microelement method for improving surface orientation and boring with layer rate of the present embodiment, this slip casting mesh
Mark layer is L3Ash, the following steps are included:
SO1: surveying drilling core using coal mine benefit, and sampling and testing protolith is respectively layered rock Background Values of Trace Elements, samples layer
Including original bottom every the lower part rock stratum 5m, the sand shale interlayer between multiple continuous thin layer limestones and adjoining platelet limestone, it is more
It include target formation (L in a continuous thin layer limestone3Ash)；According to the Background Values of Trace Elements of each sampling layer, it is based on Fisher
Criterion establishes the discriminant function of each sampling layer；
Specific sampling process are as follows: in the present embodiment to original bottom every the lower part rock stratum the 5m (H in Fig. 4o)、L1~L5It
Between thin layer limestone and its sand shale interlayer be sampled, it may be assumed that sample layer quantity be 10 layers, wherein original bottom every lower part
5 layers of rock stratum 5m, limestone (i.e. L1、L2、L3、L4、L5), sand shale interlayer (L1-2、L2-3、L3-4、L4-5).Due to 10# seat earth with
Lower delamination-terrane number is more, and gross sample test job amount is too big, also It is not necessary to (because probing is sentenced a layer error and is unlikely to down
More than L5It is grey following).Therefore only select 10# seat earth to L5Rock stratum between ash carries out Background Values of Trace Elements analysis test
With modeling.Furthermore one group of sample is respectively taken in the upper, middle and lower portion of each sampling layer, then, sample size is 3 groups × 10 layers=30
Group.
Specific test process are as follows: the microelement tested include Ba, Cd, Co, Cr, Mn, Mo, Ni, Sr, V, Th, Ag,
Al, As, Ce, Cu, La, Pr, Sb, Se, Ti, Zn, or there are also other the micro members for being more conducive to rock powder (bits) source resolution
Element.Instrument measuring can be used, protolith part microelement test result is shown in Table 2.
The too grey protolith part Background Values of Trace Elements test result (μ g/g) in certain coalfield of table 2
Note: L in the present embodiment2-3、L3-4、L4-5Sand shale interlayer is not surveyed.
The subsumption problem of each order training method data of protolith (i.e. " known research object ") is solved using Fisher discriminant analysis.
The discriminant function of training data (i.e. " known research object ") is established based on Fisher criterion." known research object "
Classifying method is not limited to Fisher diagnostic method, and there are also many diagnostic methods such as discriminant by distance, Bayes diagnostic method etc., according to reality
It needs to select.These discriminant analysis processes are automatically performed by SPSS statistical analysis software.
SO2: boring in drilling process in surface orientation, continuously takes the flushing liquor turbid solution sample for returning to ground, slightly quiet
The rock powder (bits) for fishing for precipitating is postponed, and tests the micronutrient levels of rock powder (bits)；
Specific operation are as follows: drilling construction close to original bottom every the lower part rock stratum 5m when, continuously take and return to ground
Flushing liquor turbid solution sample, and number consecutively (sample number into spectrum can be YF1, YF2 ..., YFm), timing, standing, are demarcated simultaneously
Flow velocity v is rinsed, to determine the corresponding pass between taken flushing liquor muddiness sample and drill bit position according to timing and v
System, then, rock powder (bits) 50g for fishing for precipitating carry out microelement test.Rock powder (bits) part microelement in certain time
Test result is shown in Table 3.
3 surface orientation of table bores certain period rock powder (bits) microelement test result (μ g/g) in drilling process
| Sample number into spectrum | Ba | Cd | Co | Cr | Mn | Mo | Ni | Sr | V | U | Th |
| YF1 | 92.45 | 0.15 | 0.79 | 115.18 | 427.50 | 0.44 | 44.73 | 77.95 | 329.45 | 3.33 | 412.25 |
| YF2 | 94.34 | 0.13 | 0.68 | 110.55 | 419.98 | 0.38 | 40.11 | 81.22 | 310.29 | 2.89 | 409.98 |
| YF3 | 67.09 | 0.06 | 0.45 | 25.76 | 380.19 | 0.12 | 3.44 | 644.56 | 12.12 | 1.03 | 2.59 |
| YF4 | 89.44 | 0.10 | 0.71 | 116.57 | 427.38 | 0.42 | 39.22 | 81.52 | 320.08 | 2.24 | 380.54 |
| YF5 | 91.23 | 0.09 | 0.66 | 115.32 | 432.26 | 0.45 | 41.44 | 80.12 | 333.45 | 2.76 | 399.15 |
| YF6 | 119.36 | 0.53 | 0.93 | 58.49 | 342.33 | 2.59 | 21.99 | 756.65 | 28.97 | 0.89 | 2.37 |
| YF7 | 121.43 | 0.69 | 0.98 | 59.94 | 339.92 | 2.62 | 23.98 | 773.82 | 30.96 | 0.86 | 2.19 |
| YF8 | 118.98 | 0.53 | 1.01 | 60.53 | 333.88 | 2.55 | 21.12 | 761.45 | 31.67 | 0.96 | 2.26 |
In the present embodiment, only when drilling construction is close to A point (Fig. 4), just start continuously to take the flushing for returning to ground
Liquid turbid sample.
SO3: rock powder (bits) microelement test value to be sentenced is substituted into the Fisher discrimination function of " known research object "
Middle calculating functional value Fi(i=1,2 ..., m), and in the respective function value F of " known research object "i' (i=1,2 ..., m) it is opposite
Than taking the two gap reckling, and then which layering of the rock powder (bits) from protolith identified.This discriminant analysis process be also by
SPSS statistical analysis software is automatically performed.The application sentenced in layer identification is bored in brief description Fisher discriminant analysis in surface orientation.
Into SPSS main interface, first progress data preparation, training data (i.e. " known research object ") is divided into 7
Layer: original bottom every the lower part rock stratum 5m, L1Ash, L1-2、L2Ash, L3Ash, L4Ash and L5Ash.Parameter selection is carried out again, is divided into differentiating
Analyse part, 1~7 in grouping variable-definition range selection training data (i.e. " known research object "), pays attention to choosing Fisher and
It does not standardize, the results are shown in Table 4 for output.It wherein, as a result include Fisher discriminant equation formula and 1~7 class centroid value.From
Table 4 is as can be seen that information accounting entrained by F1 is 77%.So selecting F1 (i.e. " known to grind as training data when differentiating
Study carefully object ") equation of Fisher discrimination function, as shown in formula (2).Rock powder (bits) test data to be sentenced is substituted into and differentiates letter
Functional value is obtained after numerical expression (2), then by functional value compared with the center of mass values of all categories of training data (i.e. " known research object ")
Compared with the two gap reckling is the classification of the test data, then realizes that surface orientation is bored and identify with layer.The identification knot of this example
Fruit is as shown in table 5, handles by software, and it is respectively L that YF3-YF8, which is identified corresponding layer position,1Ash, L1-2、L1-2、L2Ash, L2
Ash, L2Ash.At this moment it needs to adjust drill bit direction downwards, be allowed to L3Grey center is approached.
F1=1.489 × Ba-19.121 × Cd-46.224 × Co-1.135 × Cr-0.309 × Mn+126.854 × Mo-
5.63×Ni-0.044×Sr+0.981×V+35.485×U-0.723×Th+77.851(2)
4 Fisfer discriminant function of table and center of mass values of all categories
5 Fisfer function recognition result of table
The present embodiment is not limited to Fisher diagnostic method, also many diagnostic methods such as discriminant by distance, Bayes diagnostic method etc.,
It selects according to actual needs.
SO4: according to (bits) source resolution of rock powder in S03 as a result, combining sampling timing and rinsing the parameters such as flow velocity, judge to bore
The drop point of head, and then instruct whether drilling direction needs to adjust, for example, if drill bit drop point is in destination layer L3Ash, then along the layer after
Continuous drilling；If drill bit drop point is in L2Ash, then will adjust downwards drill bit direction, and to L3Grey center is approached；If drill bit drop point is in L4
Ash then adjusts upward drill bit direction, also to L3Grey center is approached, final to realize that drilling track is whole or 85% or more in destination layer
It is interior, it is ensured that reach design with layer rate.
The present invention by the source resolution to rock powder (bits) microelement, in conjunction with sampling timing, rinse flow velocity v can be accurate
Judge the drop point of drill bit, which continuously monitors drill bit with layer state, carries out the adjustment of drill bit direction in due course, can ensure to greatest extent
Slip casting is designed with layer rate, is not influenced by depth of stratum and change of pitch angle, it is more beneficial with layer method than existing.
Embodiment two:
The present embodiment two and the difference of embodiment one are:
Known by embodiment one, only when drilling construction is close to A point (Fig. 4), just starts continuously to take to return to rushing for ground
Washing lotion (turbid solution) sample bores in surface orientation before this and slip casting station 2 carries out Drill Hole Casing twice.One opens K1, is straight
Hole section, casing (the purpose is to prevent drilling from collapsing hole in loose interval, while playing resistance effect, avoid pine down toward basement rock
Dissipate in layer and hydraulic connection occur between each water-bearing layer), orifice tube Φ 244.5*8.94mm；Two open K2, to orient leads-slanting section, this section
Already close to L3Grey (destination layer),,Setting of casing Φ 177.8*8.05mm, bottom end are deep into slip casting destination layer；Drilling is in destination layer
For open-hole (i.e. not setting of casing).Ground is equipped with a series of rock powder (bits) sample bucket 1, by extracting flushing liquor turbid solution to rock powder
(bits) sample bucket 1 (m sample bucket), then sediment to be measured, to be sentenced (rock powder and rock are obtained from rock powder (bits) sample bucket 1
Bits).
Rock powder (bits) in embodiment one and embodiment two is sample to be measured, to be sentenced.
In embodiment one and embodiment two, the instrument that microelement is tested be Portable X RF Fluorescence Spectrometer and
Tablet press machine, more intelligentized instrument to test enhanced convenience, and field engineering technical staff slightly gives training and can grasp.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, is all in essence of the invention
Mind and made any modifications, equivalent replacements, and improvements within principle etc. should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of microelement method for improving surface orientation and boring with layer rate, which comprises the following steps:
SO1: drilling is surveyed using coal mine benefit, multiple layerings of protolith are sampled, and Background Values of Trace Elements survey is carried out to sample
Examination, further according to the Background Values of Trace Elements that protolith is respectively layered, establishes the discriminant function of each order training method data；
SO2: boring in drilling process in surface orientation, continuously takes the flushing liquor turbid sample for returning to ground, fishes out successively after standing
The rock powder or landwaste of precipitating are taken, and tests the micronutrient levels of rock powder or landwaste；
SO3: after the test data of rock powder or landwaste wait sentence is substituted into discriminant function, and the differentiation letter with each order training method data
Number comparison, and then which layering of rock powder or landwaste from protolith identified；
SO4: on the basis of rock powder or landwaste source resolution, bit location is determined in conjunction with parameters such as sampling timing, flushing flow velocities；It bores
If head in slip casting destination layer, continues to creep by set direction；If not existing, the drilling direction of drill bit is adjusted, makes it to mesh
Mark layer center is approached, and to improve with layer rate, reaches design slip casting effect.
2. a kind of microelement method for improving surface orientation and boring with layer rate according to claim 1, which is characterized in that institute
It states in step S01, the discriminant function F of each order training method data is established according to Fisher criterioni', wherein i=1,2 ...,
m。
3. a kind of microelement method for improving surface orientation and boring with layer rate according to claim 2, which is characterized in that institute
It states in step S02, rock powder to be sentenced or landwaste test data is substituted into Fisher discrimination function, and calculate functional value Fi,
Middle i=1,2 ..., m, and the respective function value F with each order training method datai', wherein i=1,2 ..., m comparison take the two poor
Away from reckling, and then which layering of rock powder or landwaste from protolith identified.
4. a kind of microelement method for improving surface orientation and boring with layer rate according to claim 1, which is characterized in that institute
State the lower part rock stratum 5m, multiple continuous thin layer limestones that the sampling layer in step S01 includes original floor water barrier and adjacent thin
Sand shale interlayer between layer limestone includes slip casting destination layer in multiple continuous thin layer limestones.
5. a kind of microelement method for improving surface orientation and boring with layer rate according to claim 1, which is characterized in that
The upper, middle and lower portion of sampling layer in the step S01 respectively takes one group of rock sample.
6. a kind of microelement method for improving surface orientation and boring with layer rate according to claim 1, which is characterized in that institute
State the microelement tested in step S01 and S02 include Ba, Cd, Co, Cr, Mn, Mo, Ni, Sr, V, Th, Ag, Al, As, Ce,
Cu、La、Pr、Sb、Se、Ti、Zn。
7. a kind of microelement method for improving surface orientation and boring with layer rate according to claim 1, which is characterized in that institute
State the concrete operations that surface orientation in step S02 drills are as follows: in drilling construction close to the lower part rock stratum 5m of original floor water barrier
When, the flushing liquor turbid sample for returning to ground is continuously taken, and number, timing, standing, while calibration of flush flow velocity v, so as to
The corresponding relationship between taken flushing liquor muddiness sample and drill bit position is determined according to timing and v, and it is heavy then to fish for successively
The rock powder or landwaste in shallow lake carry out microelement test.
8. a kind of microelement method for improving surface orientation and boring with layer rate according to claim 1 or claim 7, feature exist
In the instrument tested rock powder or landwaste microelement is Portable X RF Fluorescence Spectrometer and tablet press machine.
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