CN108196312B - It is a kind of hydrogeology in water-bearing layer and water barrier recognition methods - Google Patents

It is a kind of hydrogeology in water-bearing layer and water barrier recognition methods Download PDF

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CN108196312B
CN108196312B CN201810038894.1A CN201810038894A CN108196312B CN 108196312 B CN108196312 B CN 108196312B CN 201810038894 A CN201810038894 A CN 201810038894A CN 108196312 B CN108196312 B CN 108196312B
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water
drilling
bearing layer
channel
conductivity
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CN108196312A (en
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潘晓东
彭聪
焦友军
任坤
曾洁
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Institute of Karst Geology of CAGS
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    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
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Abstract

The present invention provides the recognition methods in water-bearing layer and water barrier in a kind of hydrogeology, comprising: excavates a water channel probing before near drilling, and installs the variation that triangular-notch weir and online monitoring instruments monitor water and conductivity in air down-hole hammer work progress;Preset location is drilled using air down-hole hammer drilling machine and chooses suitable air compressor machine;Water-drawing channel is excavated between water channel near drilling machine, and near drilling machine, flume and observation water channel middle berth set barrier film;Clear up the landwaste in water channel in time in drilling process;It records drilling depth in real time in drilling process and adds the drilling rod time;Different time flow rate calculation is carried out according to the data of monitoring instrument record after probing terminates;The water flow changing curve and conductivity variations curve of different drilling depths are drawn according to calculated result;According to water flow changing curve and conductivity variations Curves Recognition water-bearing layer and water barrier.The present invention can fast and accurately distinguish water-bearing layer and water barrier.

Description

It is a kind of hydrogeology in water-bearing layer and water barrier recognition methods
Technical field
The present invention relates to the identification sides in water-bearing layer and water barrier in hydrogeological field more particularly to a kind of hydrogeology Method.
Background technique
Water-bearing layer and water barrier are the important contents of hydrogeological study, and conventional method is generally according to lithologic character to aqueous Layer is distinguished with water barrier, such as the carbonate rock of karsts developing area is considered as common water-bearing layer, but in karst area Found in prospecting test, groundwater level exist below the drilling well of karsts developing area also there are many due to water is minimum cannot at well, Lithology is almost the same from top to bottom but different depth permeability is also inconsistent for same drilling well, generally according to lithology distinguish water-bearing layer with Water barrier is inaccurate.
Mainly disappearing according to drilling fluid is judged to drilling aquifer and aquifuge during traditional hydrogeologic drilling Situation, the speed of drilling depth and the comprehensive analysis such as the lithology of extracted rock core and fractured situation are consumed to judge.Sentence at these scenes Although section of cutting off the hands can distinguish water-bearing layer and water barrier, observation lasting in drilling process, sturdy hydrogeology are needed Basic and strong sense of responsibility, and whether water guide is not easily distinguishable in part crack, brings difficulty to water-bearing layer and water barrier differentiation.
Hydrogeological logging and the layering technology of drawing water are water-bearing layer and water barrier in current differentiation drilling well, grasp different water cut Duan Shui Literary geologic parameter technical way.Hydrogeological logging technology due to the factors such as physical prospecting precision, physical prospecting multi-solution influence, and it is aqueous but It cannot not be easily distinguishable to water outlet with water outlet rock resistivity can be given, will appear deviation in practical applications;It is layered technology of drawing water Different water cut layer hydrogeological parameter can be accurately obtained, but water-bearing layer and water barrier under upper and lower lithology uniform condition in the borehole How quickly to distinguish becomes the difficult point that layering bailing test is carried out.
Therefore, how quickly to distinguish water-bearing layer in hydrogeology and water barrier is always that industry needs improved target.
Summary of the invention
In view of this, the purpose of the present invention is to provide the recognition methods in water-bearing layer and water barrier in a kind of hydrogeology, The technical issues of aiming to solve the problem that water-bearing layer and the water barrier how fast and accurately identified in hydrogeology.
The present invention propose it is a kind of hydrogeology in water-bearing layer and water barrier recognition methods, wherein the recognition methods packet It includes:
A water channel is excavated before being drilled near drilling, triangular-notch weir and online monitoring instruments prison are installed in water channel Survey the variation of water and conductivity in air down-hole hammer work progress;
Preset location is drilled using air down-hole hammer drilling machine, choose suitable air compressor machine ensure in drilling process water and Landwaste is all blown out earth's surface;
Water-drawing channel is excavated between water channel near drilling machine, and near drilling machine, flume and observation water channel middle berth set Barrier film, it is ensured that the water for blowout of constructing, which does not leak, all to be imported in observation water channel;
It clears up the landwaste in the water channel in time in drilling process, causes monitoring number to prevent debris blockage triangular-notch weir weir plate According to there is error;
It records drilling depth in real time in drilling process and adds the drilling rod time, it is deep with determination each period corresponding drilling Degree;
Different time flow rate calculation is carried out according to the data of monitoring instrument record after probing terminates;
The water flow changing curve and conductivity variations curve of different drilling depths are drawn according to calculated result;
According to the water flow changing curve and conductivity variations Curves Recognition water-bearing layer and water barrier.
Preferably, the length of the water channel, width and depth are respectively 10 meters, 1 meter, 0.5 meter, and under the water channel Trip setting weir plate.
Preferably, a dell is excavated, at 0.3 meter of the weir plate upstream to avoid the landwaste blown out in drilling process The weir plate is flooded, wherein the depth and width of the dell are respectively 1 meter, 1 meter.
Preferably, the monitoring instrument is placed in the dell, to record the variation of water level and conductivity, and record Interval time is 10 seconds, and the right angle of the bottom of the probe of the monitoring instrument and the weir plate keeps same level height.
Preferably, it is equipped with antiseepage film near the drilling and in the water channel, to ensure in drilling process The underground water centralized discharge of ejection is into the water channel.
Preferably, described according to the water flow changing curve and conductivity variations Curves Recognition water-bearing layer and water barrier Include:
Water changed in the water flow changing curve continue ascent stage or bust ascent stage be determined as it is aqueous Layer.
Preferably, described according to the water flow changing curve and conductivity variations Curves Recognition water-bearing layer and water barrier Include:
Water is changed into continual and steady section in the water flow changing curve or bust recover section is determined as water proof Layer.
The flow that technical solution provided by the invention is discharged during hydrogeologic drilling by monitoring down-hole hammer on-line And the variation of chemical measurements of water, it thus determines position and the thickness of aquifer, can fast and accurately distinguish aqueous Layer and water barrier, simultaneously because air down-hole hammer rate of penetration can greatly save water fastly and the advantages that do not need construction water Literary geological drilling time and cost.
Detailed description of the invention
Fig. 1 is the recognition methods flow chart in water-bearing layer and water barrier in hydrogeology in an embodiment of the present invention;
Fig. 2 is the structural representation flow chart for excavating a water channel in an embodiment of the present invention near drilling;
Fig. 3 is the region hydrogeochemistry modeling schematic diagram that drills in an embodiment of the present invention;
Fig. 4 be in an embodiment of the present invention down-hole hammer hydrogeologic drilling work progress flow and conductivity and drill into Ruler relation curve schematic diagram.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
The recognition methods of water-bearing layer and water barrier in a kind of hydrogeology provided by the present invention will be carried out below detailed Explanation.
Referring to Fig. 1, for the recognition methods process in water-bearing layer and water barrier in hydrogeology in an embodiment of the present invention Figure.
In the present embodiment, the recognition methods of water-bearing layer and water barrier passes through on-line monitoring down-hole hammer in the hydrogeology Thus the variation of the flow and chemical measurements of water that are discharged during hydrogeologic drilling determines the position of aquifer And thickness, water-bearing layer and water barrier can be fast and accurately distinguished, simultaneously because air down-hole hammer rate of penetration is fast and does not need The advantages that construction water, can greatly save hydrogeologic drilling time and cost.
In step sl, before being drilled near drilling excavate a water channel, in water channel install triangular-notch weir and Line monitoring instrument monitors the variation of water and conductivity in air down-hole hammer work progress.
In the present embodiment, the length of the water channel, width and depth are respectively 10 meters, 1 meter, 0.5 meter, in the brill It is equipped with antiseepage film near hole and in the water channel, with the underground water centralized discharge that ensures to spray in drilling process to institute It states in water channel.In the present embodiment, and in the downstream of the water channel weir plate is set, the shape of the weir plate be triangle or Rectangle excavates a dell at 0.3 meter of the weir plate upstream, to avoid the landwaste blown out in drilling process by the weir plate It floods, wherein the depth and width of the dell are respectively 1 meter, 1 meter, and the monitoring instrument is placed in the dell, with note Record water level and conductivity variation, and record interval time be 10 seconds, and the bottom of the probe of the monitoring instrument with it is described The right angle of weir plate keeps same level height, as shown in Fig. 2,
Referring to Fig. 2, for the structural representation process of a water channel is excavated in an embodiment of the present invention near drilling Figure.
As shown in Fig. 2, excavating the water channel 4 for being about 10m, wide about 1m, deep about 0.5m near drilling 1, wherein specific Water channel 4 excavate scale visual field ground depending on, but need it is big as far as possible, to ensure to be discharged by monitoring instrument and triangular-notch weir/square Without larger fluctuation when shape weir plate 3, and near drilling 1 and 4 middle berth of water channel sets antiseepage film, make to spray in drilling process as far as possible Underground water centralized discharge is into water channel 4.One triangle weir plate or rectangle weir plate 3 are set in 4 downstream of water channel, wherein weir plate 3 is specific Size according to drilling design flow subject to, at the 0.3m of weir upstream, excavate a deep about 1m, the dell 2 of wide about 1m, to avoid drilling well The landwaste blown out in journey did not had weir.At dell 2, placement online monitoring instruments (such as solinst monitoring instrument and atmospheric pressure Power meter) 5 record water levels and conductivity variations, intra-record slack byte time 10s, by the bottom and weir of the probe of monitoring instrument 5 when placement The right angle of plate 3 is maintained at same level height.In the air of same position, another monitor 6 is placed to monitor air pressure Variation, time interval setting are consistent (i.e. intra-record slack byte time 10s) with upper one, certain Specific construction process channel, three Angle weir, record time can be also specifically arranged, it is not limited here.In the present embodiment, online monitoring instruments Solinst is utilized Capture the variation of air down-hole hammer hydrogeologic drilling work progress water quantity and quality, fast and accurately distinguish water-bearing layer and water barrier and Thickness, to carry out underground water hierarchical monitor later, hierarchical-development, layered protection provide new idea and technical method, while by In air down-hole hammer rate of penetration fastly and the advantages that do not need construction water, can greatly save the hydrogeologic drilling time and at This, when air down-hole hammer carries out hydrogeologic drilling construction, using online monitoring instruments and triangular-notch weir/rectangular weir is mating is blown The water-level gauge water chemistry monitor of water outlet distinguishes drilling water-bearing layer and water barrier and thickness with this.
Please continue to refer to Fig. 1, in step s 2, preset location is drilled using air down-hole hammer drilling machine, chooses and closes Suitable air compressor machine ensures that water and landwaste are all blown out earth's surface in drilling process.
In the present embodiment, the air down-hole hammer drilling machine model YXZ-90A of selection, air compressor machine model Ingersoll-rand 24 cubes, bore diameter 220mm, difference work progress can be changed specifically certainly, it is not limited here.
In step s3, water-drawing channel is excavated between water channel near drilling machine, and near drilling machine, flume and observation Water channel middle berth sets barrier film, it is ensured that the water for blowout of constructing, which does not leak, all to be imported in observation water channel.
In step s 4, the landwaste in the water channel is cleared up, in time in drilling process to prevent debris blockage triangular-notch weir weir Plate causes monitoring data error occur.
In step s 5, it records drilling depth in real time in drilling process and adds the drilling rod time, with determination each period Corresponding drilling depth.
In step s 6, different time flowmeter is carried out according to the data of monitoring instrument record after probing terminates It calculates.
In the step s 7, the water flow changing curve and conductivity variations of different drilling depths are drawn according to calculated result Curve.
In step s 8, according to the water flow changing curve and conductivity variations Curves Recognition water-bearing layer and water proof Layer.
In the present embodiment, described according to the water flow changing curve and conductivity variations Curves Recognition water-bearing layer Include: with water barrier
Water changed in the water flow changing curve continue ascent stage or bust ascent stage be determined as it is aqueous Layer.
In the present embodiment, described according to the water flow changing curve and conductivity variations Curves Recognition water-bearing layer Include: with water barrier
Water is changed into continual and steady section in the water flow changing curve or bust recover section is determined as water proof Layer.
The present invention will be illustrated again below by way of example.
Referring to Fig. 3, for the region hydrogeochemistry modeling schematic diagram that drills in an embodiment of the present invention.
As shown in figure 3, drilling (ZK01), which is located at Guizhou Province Bijie City seven-star, closes the Dongshan area's clear water Pu Zhen village, Chishui River valley At the 3km of west bank, underground water is overall to be drained from Chishui River river valley two sides to Chishui River, and river valley profoundly causes mostly to be lauched in area Flowing is rapid.Main exposure Triassic Jialingjiang group (T1-2J), Guan Ling group first segment (T2g1), Guan Ling group second segment (T2g2), three Bridge group (T3S) stratum, wherein Triassic Jialingjiang group (T1-2J) the predominantly middle thin layer limestone of lithology, dolomite occasionally press from both sides mud stone, close Ridge group first segment lithology is mainly mud stone, calcilutite, Guan Ling group second segment (T2g2) lithology is mainly limestone, dolomite, three bridges Group (T3S) lithology is mainly calcareous sandstone, siltstone, based on shale.
Drilling is deployed in the Triassic system and closes ridge group second segment (T2g2) and three bridge group (T3S) near stratum contact band, three bridge groups (T3S) and close ridge group first segment (T2g1) constitute top and bottom clastic rock water barrier, Guan Ling group second segment (T2g2) carbonate rock Water-bearing layer is constituted, underground water from southern west side northwards drain by east side Chishui River, and drill three bridge group (T of position3S) mud stone is constituted In front of Groundwater Flow direction, water barrier blocking causes inflow direction (ZK01 drill hole) to form local rich water for water barrier exposure Area, the Triassic system close ridge group second segment (T2g2) water-bearing layer lithology is that ash, light grey medium bed to blocky crystallite algae consider dolomite and ash to be worth doing Color hears layer micrite alternating layers to blocky micrite, containing shale to Dark grey medium bed.
It chooses Guizhou In China northwestward Bijie Prefecture's Triassic system and closes ridge group second segment (T2g2) dolomite, limestone formation development Down-hole hammer hydrogeologic drilling test, main purpose are to explore carbonate aquifer permeance property otherness from top to bottom, area Divide the vertical upper aquifer and aquifuge of carbonate rock, more convenient and quick identification karst aquifer Vertical Variation Characteristic is karst region Area carries out underground water layering study on monitoring and meticulous depiction three-dimensional hydrogeologic structure provides new direction.
Select drilling machine model YXZ-90A, 24 cubes of air compressor machine model Ingersoll-rand, bore diameter 220mm.Near drilling It is intercepted with a thickness of 2mm plastic film, and flume is built in downstream near drilling, it is ensured that air compressor machine is blown during drilling construction Underground water all imports flume out, and triangle weir plate and online monitoring instruments (solinst) observational record are utilized in flume SEA LEVEL VARIATION and conductivity variations during DTH drilling, intra-record slack byte time 10s, utilize triangular-notch weir formula and waterlevel data Flow is calculated, flow and conductivity and probing drilling depth relation curve are drawn.At on August 25,9 2017, down-hole hammer drilling machine starts to apply Work terminates to construct when August 26 days 8, and bit freezing does not occur, stops brill phenomenon for centre, drilling well end hole hole depth 150m, stationary water behind whole hole Position 24.0m.Rejecting changes drilling rod and causes water part increase process, down-hole hammer hydrogeologic drilling work progress flow and conductivity Fig. 4 is seen with probing drilling depth relation curve.
Referring to Fig. 4, for down-hole hammer hydrogeologic drilling work progress flow and conductivity in an embodiment of the present invention With probing drilling depth relation curve schematic diagram.
Drilling well begins with water and gushes out when down-hole hammer is constructed to 46.2m, and flow reaches 10.8L/s when the end hole 150m.Wherein bore More gentle rising is totally presented in hole drilling depth 46.2m to 53.1m (c-d) flow, and flow is gradually increased by 0L/s to 0.45L/s, Part declines repeatedly, slope 0.065L/sm;53.1m to 67.8m (d-h) flow persistently increases to 6.1L/ by 0.45L/s S shows as 3 stages in the slope of curve, and respectively 53.1m to 56.8m (d-e) flow persistently increases to 1.6L/ by 0.45L/s S, 56.8m persistently increase to 4.2L/s by 1.6L/s to 61.2m (e-f) flow, and 61.2m to 67.8m (f-h) flow is by 4.2L/s 6.1L/s is persistently increased to, slope is respectively 0.31L/sm, 0.52L/sm, 0.29L/sm;67.8m to 77.1m (h-i) Zigzag shake, slope 0.0L/sm is steadily presented in flow relatively;The appearance of 77.1m to 88.9m (i-j) flow sharply declines After start to restore, restore in 85.5m flow to 6.1L/s (consistent with before flow decline), 85.5m is relatively steady to 88.9m process Zigzag shake is presented, slope is generally 0.0L/sm;88.9m to 106.1m (j-k) flow is gradually recovered simultaneously after sharply declining It gradually increases, flow reaches 6.5L/s at 88.9m, and slope is generally 0.023L/sm;106.1m to 126.3m (k-l) flow Zigzag shake is steadily presented relatively, slope is generally 0.0L/sm;126.3m to 150.0m (l-m) flow curve presents anxious Quickly go up after play decline and continue to rise, flow gradually increases after dropping to 5.8L/s by 6.5L/s, increases at 150.0m To 10.8L/s, slope is generally 0.18L/sm.
Test result flow changing curve can mainly be summarized as 4 seed types: lasting rise (46.2m to 53.1m), continues Stablize (67.8m to 77.1m;((88.9m is extremely for 77.1m to 88.9m) and bust rising for 106.1m to 126.3m), bust recovery 106.1m;126.3m to 150.0m).
Static level is 24.0m behind drilling well end hole, and 46.2m begins with water in work progress, and water outlet fragment position is lower than static Water level, it is possible to determine that drilling well underground water is artesian water.There is zigzag variation in flow changing curve whole process, in conjunction with work progress Analyze reason: it is non-water-saturated state that down-hole hammer, which blows out earth's surface rubble part, and absorption part water causes flow to subtract after blowing out earth's surface Small, triangular-notch weir measurement flow luffing is the most obvious when especially starting to disclose water-bearing section.
Therefore, water-bearing layer and water barrier can be identified according to flow changing curve type, specially lasting ascent stage (46.2m to 67.8m) is water-bearing layer, continual and steady section (67.8m to 77.1m;106.1m to 126.3m) is water barrier, bust is extensive (77.1m to 88.9m) is water barrier, bust ascent stage (88.9m to 106.1m to multiple section;126.3m to 150.0m) is water-bearing layer.
Drilling well begins with water and gushes out when down-hole hammer is constructed to 46.2m, and conductivity initial value is 408us/cm, and in 40s It is instantly increased to 532us/cm, the overall continuous decrease wave-shaped of 46.2m to 50.5m reaches minimum 410us/ at 50.5m cm;50.5m is relatively stable to 54.5m conductivity, and maximum changing amplitude is no more than 10us/cm;54.5m is in 55.8m conductivity It is now steady to continue to decline, 371us/cm is dropped to by 410us/cm;55.8m is presented to 56.8m conductivity rapidly to be risen, by 371us/cm rises to 577us/cm;56.8m to 62.5m conductivity by it is of short duration it is steady after parabolic type decline is presented, by 577us/cm drops to 437us/cm;62.5m totally rises in complications to 65.5m conductivity, is risen to by 437us/cm 556us/cm;65.5m is relatively steady to 88.9m conductivity, and maximum changing amplitude is no more than 20us/cm;88.9m to 106.1m electricity Rising is generally presented in conductance, rises to 729us/cm by 556us/cm, conductivity fluctuation amplitude is first into 106.1m in 88.9m Phase is less than the middle and later periods;106.1 is relatively steady to 120.7m conductivity, and maximum changing amplitude is no more than 20us/cm;120.7m extremely Decline, 120.7m to 121.6m conductivity are rapidly increased to by 729us/cm rapidly after 126.3m conductivity steeply rises 1379us/cm, 121.6m conductivity reach dramatic decrease after peak value, and 121.6m to 126.3m conductivity is declined by 1379us/cm To 768us/cm;126.3m falls after rising to 150.0m conductivity, reaches peak value 824us/cm in 143.1m, and when 150.0m returns drop To 771us/cm, this section of conductivity fluctuates up and down, but amplitude is overall smaller.
Test result conductivity variations curve can generally be summarized as 5 seed types: lasting to rise (55.8m to 56.8m; 62.5m to 65.5m;88.9m to 106.1m;), continue to decline (46.2m to 50.5m;54.5m to 55.8m;56.8m is extremely 62.5m;), continual and steady (65.5m to 88.9m;106.1 to 120.7m), (126.3m to 150.0m), rise suddenly urgency for concussion fluctuation (120.7m to 126.3m) drops.
Conductivity variations curve can provide effective supplement for water-bearing layer and water barrier differentiation, and drill 1 (46.2m of water-bearing section " decline-rising-decline-rising " feature is presented to 67.8m) conductivity variations curve, illustrates persistently there are different hydrochemical types The recharge of ground water, it is down or up to there is one section of opposite stage of stable development behind vertex, illustrate that water-bearing section water (make-up water) is sustainable , but in 1 tail portion of water-bearing section (65.5m to 67.8m) being basically unchanged of conductivity, it may be said that bright sustaining supply underground water aquation It learns type and down-hole hammer blowout earth's surface hydrochemical type is almost the same;Water-bearing section 2 (88.9m to 106.1m) conductivity presentation " on Liter-stabilization-rising-is stablized ", it can also illustrate persistently there are the different hydrochemical type recharges of ground water, and (the supply of water-bearing section water Water) it is sustainable;(" decline-rising-stabilization-rising-is presented in 126.3m to 150.0m) ground water chemistry type to water-bearing section 3 Decline " feature, can also illustrate persistently there are the different hydrochemical type recharges of ground water, and water-bearing section water (make-up water) is sustainable 's;((77.1m is continually and steadily substantially unchanged to 88.9m) conductivity, explanation for 67.8m to 77.1m) and water proof section 2 for water proof section 1 Without the different ground water chemistry type recharges of ground water;3 conductivity feature of water proof section present " it is continual and steady-to steeply rise-sharply under Drop " feature, creeps into 120.7m, conductivity steeply rises, and illustrates there is concentrated water remittance, after 2 minutes rise to vertex Start sharply to decline, no smooth transition phase, combined water variation characteristic can determine whether that concentrated water is unable to sustaining supply.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.

Claims (2)

1. the recognition methods in water-bearing layer and water barrier in a kind of hydrogeology, which is characterized in that the recognition methods includes:
A water channel is excavated before being drilled near drilling, triangular-notch weir is installed in water channel and online monitoring instruments monitoring is empty The variation of water and conductivity in gas down-hole hammer work progress;
Preset location is drilled using air down-hole hammer drilling machine, choosing suitable air compressor machine ensures water and landwaste in drilling process All blown out earth's surface;
Water-drawing channel is excavated between water channel near drilling machine, and near drilling machine, water-drawing channel and observation water channel middle berth set up defences Seep film, it is ensured that the water for blowout of constructing, which does not leak, all to be imported in observation water channel;
It clears up the landwaste in the water channel in time in drilling process, causes monitoring data to go out to prevent debris blockage triangular-notch weir weir plate Existing error;
It records drilling depth in real time in drilling process and adds the drilling rod time, with determination each period corresponding drilling depth;
Different time flow rate calculation is carried out according to the data of monitoring instrument record after probing terminates;
The water flow changing curve and conductivity variations curve of different drilling depths are drawn according to calculated result;
According to the water flow changing curve and conductivity variations Curves Recognition water-bearing layer and water barrier;
Wherein, described to include: with water barrier according to the water flow changing curve and conductivity variations Curves Recognition water-bearing layer
Water is changed into the lasting ascent stage in the water flow changing curve or the bust ascent stage is determined as water-bearing layer, In Water is changed into continual and steady section in the water flow changing curve or bust recover section is determined as water barrier;
Wherein, the length of the water channel, width and depth are respectively 10 meters, 1 meter, 0.5 meter, and are arranged in the downstream of the water channel The weir plate;
Wherein, a dell is excavated at 0.3 meter of the weir plate upstream, it will be described to avoid the landwaste blown out in drilling process Weir plate floods, wherein the depth and width of the dell are respectively 1 meter, 1 meter.
2. the recognition methods in water-bearing layer and water barrier in hydrogeology as described in claim 1, which is characterized in that in the depth The monitoring instrument is placed in hole, to record the variation of water level and conductivity, and the interval time recorded is 10 seconds, and the prison The right angle of the bottom and the weir plate of surveying the probe of instrument keeps same level height.
CN201810038894.1A 2018-01-16 2018-01-16 It is a kind of hydrogeology in water-bearing layer and water barrier recognition methods Expired - Fee Related CN108196312B (en)

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