CN105155591A - Underground water biological expansion differential water shut-off method - Google Patents
Underground water biological expansion differential water shut-off method Download PDFInfo
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- CN105155591A CN105155591A CN201510522125.5A CN201510522125A CN105155591A CN 105155591 A CN105155591 A CN 105155591A CN 201510522125 A CN201510522125 A CN 201510522125A CN 105155591 A CN105155591 A CN 105155591A
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Abstract
The invention belongs to the technical field of underground water monitoring, and particularly relates to an underground water biological expansion differential water shut-off method suitable for differential water shut-off of limestone areas. The underground water biological expansion differential water shut-off method includes the steps that firstly, flanges are manufactured; secondly, the flanges are installed; thirdly, biological expansion material filling is conducted; fourthly, pipe laying is conducted; fifthly, the use amount of casting cement paste is calculated; and sixthly, grouting pipe grouting is conducted so that a differential water shut-off port can be formed and permanent differential water shut-off can be completed. The underground water biological expansion differential water shut-off method is easy to construct and operate and low in cost. The permeability of underground water is blocked, bottom layer underground water is prevented from entering an upper layer water-bearing stratum along a fissure surface, the water-bearing stratums are prevented from mixing, and the permanent blocking water shut-off effect is achieved.
Description
(1) technical field
The invention belongs to groundwater monitoring technical field, particularly the biology expansion layering water-stopping method of underground water.
(2) background technology
Traditional water level and water-quality observation, want the water level water quality obtaining different water cut layer, must beat multiple well, each well can only observe one deck aquifer, and cause floor space large like this, the engineering time is long, and fund input is large.Nowadays in same well at a glance, adopt the mode of layering shut-in well, achieve the monitoring of different water cut layer water level and water quality, this individual well multilayer position monitor well floor space is little simultaneously, constructs simple and reduces cost.But it is found that, if the sealing layer process of individual well multilayer position monitor well is bad, will cause producing hydraulic connection between different water cut layer, and string layer occur between each aquifer, loses the meaning of single hole multilayer position monitoring.Therefore, in the monitor well work progress of individual well multilayer position, layering sealing is into a most important step in well work.The method of current domestic and international commonplace application is the method adopting layering filler sealing, monitoring for traditional single hole individual layer is install filter pipe at aquifer place, clay is backfilled in aquifer and relative water resisting layer contact zones, waterproof pipe is installed in other regions, thus realizes the object in monitoring objective aquifer; And single hole multilayer position is monitored, first the position, monitoring aquifer corresponding to monitoring pipe is needed to design, punch in target monitoring layer position, gather the data message of target monitoring layer position underground water, layering for monitoring pipe outside is then at sand back sand gravel, at argillic horizon backfill clay or clay ball.
For Quaternary pore water aquifer, stratum is mainly deluvium, alluvium, the mutual deposit of marine facies etc., and formation lithology is mainly clay, lam, sandy loam, sand, sandy gravel stratum etc., and pore water is composed and is stored in the space of sand, sub-sand and sand gravel layer.For the layering sealing of this underground water, the above-mentioned backfill method of general employing, namely at sand back sand gravel, at argillic horizon backfill clay or clay ball, at relative water resisting layer backfill clay ball, clay ball is after underground water soaks, precipitation forms fine and close clay slurry, thus reach impermeable role, and clay slurry and relative water resisting layer can be formed cementing preferably, thus serve good water proof effect.
Different from Quaternary pore water, the groundwater type of karst or bedrock formation is Karst-fissure water, stratum mainly limestone is main, groundwater occurrence is in Karst Fissures and karst, relative water resisting layer is comparatively complete rock, if backfill clay ball, be difficult to periphery rock cementing after clay ball dissolution precipitation, form relatively complete ball clay, the hardness of ball clay itself and the more complete rock of water-resisting property poor, easily punctured by the pressure-bearing pressure of underground water, cause aquifer string layer, there are two fissure-planes in addition between ball clay and rock stratum, when bearing capacity is larger, bottom underground water is easy to enter into upper aqueous layer along fissure-plane, cause aquifer string layer.
(3) summary of the invention
In order to make up the deficiencies in the prior art, the invention provides a kind of construct simple, be easy to operate, the underground water with low cost especially biological expansion layering in karst area water-stopping method, prevent the permeability of underground water, bottom underground water is prevented to enter into upper aqueous layer along fissure-plane, avoid aquifer string layer, reach the effect of permanent shutoff sealing, solve problems of the prior art.
The present invention is achieved through the following technical solutions:
Underground water biological expansion layering water-stopping method, comprises following operating procedure:
(1) according to the formation information that drill hole sampling obtains, accurately obtain the position of aquifer and relative water resisting layer, in conjunction with relative water resisting layer position welding flange in the monitoring pipe of multilayer position: specifically weld one group of flange respectively on the multilayer position monitoring pipe outer wall of each relative water resisting layer lower position, on each group of flange of monitoring pipe outside, multilayer position, correspondence is provided with the circular hole passed for Grouting Pipe group respectively;
(2) multiple Grouting Pipe is passed outside the monitoring pipe of multilayer position
portion's methodthe circular hole that blue dish passes for Grouting Pipe group, the bottom of each Grouting Pipe is arranged on the top of one group of flange corresponding to each relative water resisting layer bottom respectively;
(3) parcel kelp layer is wound around in the space between the list group flange in the monitoring pipe of multilayer position is upper and lower; Multilayer position monitoring pipe, Grouting Pipe, kelp layer between flange and flange are mounted to as a whole and Xiang Jingzhong is delivered to the position arranged in well;
(4) according to the thickness of each relative water resisting layer, the cement slurry volume of casting above the flange calculating corresponding each relative water resisting layer position, is needed;
(5) treat that sea-tangle imbibition is extremely by the well internal pore temporary plugging of each group of flange periphery of monitoring pipe outside, multilayer position, the cement paste of each respective volume amount adopting Grouting Pipe to calculate in the flange top casting step (4) on each kelp layer top respectively, cement paste initial set in 4-6 hour, 24-36 hour cement slurry sets, form layering sealing port, complete permanent layering sealing.
The quantity of one group of flange on the multilayer position monitoring pipe outer wall that described each relative water resisting layer bottom is corresponding is 2, and the distance between described one group of 2 flange is 2-4 rice.
Described multilayer position monitoring pipe is continuous multichannel PVC antipriming pipe, and this continuous multichannel PVC antipriming pipe can be implemented in a wellhole and carries out sampling of water quality and monitoring to multiple aquifer simultaneously.
Beneficial effect of the present invention: the construction of underground water of the present invention biological expansion layering water-stopping method is simple, be easy to operation, with low cost.By the analysis to aquifer, In Limestone Area and relative water resisting layer distribution situation, in each relative water resisting layer position, layering sealing port is set, namely by the multilayer position monitoring pipe outer wall of relative water resisting layer lower position, two flange are set and in space between flange parcel filling sea-tangle or sea-tangle spherolite as biological expanding material, by the space temporary plugging in well after sea-tangle or the imbibition of sea-tangle spherolite, like this under the jacking of sea-tangle and flange, upper strata cement paste needed for the THICKNESS CALCULATION of relative water resisting layer quality and on the flange on kelp layer top grout injection, this Single port has dual-plugging effect, one is that interim backwater effect is played in upper strata slip casting, the time won is solidified for cement paste, it two is that the pressure-bearing property of lower layer of water serves plugging action.This biological expansion layering water-stopping method is significant to the water level in each aquifer, In Limestone Area, water quality monitoring, prevent the permeability of underground water, bottom underground water is prevented to enter into upper aqueous layer along fissure-plane, ensure that each aquifer, without string layer, reaches the effect of permanent shutoff sealing in observation process.
(4) accompanying drawing explanation
Below in conjunction with
accompanying drawingthe present invention is further illustrated.
fig. 1for layering water seal design letter of the present invention
figure;
fig. 2for layering sealing port design of the present invention
figure;
fig. 3for flange design of the present invention
figure.
in figure, 1 multilayer position monitoring pipe, 2 Grouting Pipe, 3 relative water resisting layers, 4 flange, 5 kelp layers, 6 grout pouring layers, 7 first circular holes, 8 second circular holes.
(5) detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but the present invention is not limited thereto.
As
accompanying drawing 1-3shown in, in the water quality monitoring of underground water, adopt the method for biological expansion layering sealing, can prevent from going here and there between upper and lower two aquifers layer, better complete the water level between each aquifer, water quality monitoring.The method is undertaken by following operating procedure:
(1) manufacturing flange dish
The method flange used 4 cuts out the position of the first circular hole 7 that applicable multilayer position monitoring pipe 1 and Grouting Pipe 2 pass through and the second circular hole 8 as required respectively in card, by for subsequent use for the flange made.
(2) mounting flange
According to the formation information that drill hole sampling obtains, accurately obtain the position of aquifer and relative water resisting layer 3, in conjunction with the relative water resisting layer 3 position flange 4 that welding production is good on the multilayer position monitoring pipe outer wall of monitoring pipe 1 relevant position, multilayer position: namely weld one group of two flange 4 respectively on multilayer position monitoring pipe 1 outer wall of the corresponding position, bottom of each relative water resisting layer 3, two flange 4 spacing distance 2-4 rice, are preferably 3 meters; Flange 4 is installed in second circular hole the Grouting Pipe group of multiple Grouting Pipe 2 composition, multiple Grouting Pipe 2 is bundled and is each passed through the second circular hole in multilayer position monitoring pipe 1 on each group flange 4, the length of each Grouting Pipe 2 is different, is separately installed with a Grouting Pipe 2 above the flange 4 ensureing monitoring pipe 1 outside, multilayer position that the bottom of each relative water resisting layer 3 is corresponding.
(3) biological expanding material filling
In space between list group in multilayer position monitoring pipe 1 two flange about 4 be wound around parcel kelp layer 5, thickness is the distance of upper and lower two flange 4, kelp layer 5 size and flange 4 in the same size; By means of the expansion water sorption of sea-tangle, after ensureing expansion, sea-tangle can fully contact with the borehole wall, plays the effect of the bearing capacity of jacking cement paste and shutoff lower layer of water.
(4) manage under
By mounted multilayer position monitoring pipe 1, Grouting Pipe 2, flange 4 with often organize kelp layer 5 between two flange 4 integrally and Xiang Jingzhong is delivered to the position arranged in well.
(5) cement paste is prepared
According to the thickness of each relative water resisting layer 4, need cast the volume of cement paste in flange 4 top calculating corresponding position according to V=π r2h; Wherein, r is wellhole radius, and h is each relative water resisting layer thickness.
(6) layering shutoff sealing
Treat that sea-tangle imbibition is by the well internal pore temporary plugging of the flange periphery of monitoring pipe outside, multilayer position, adopt the cement paste of the flange 4 top casting respective volume amount of Grouting Pipe 2 respectively on each kelp layer 5 top to form grout pouring layer 6; Treat cement paste initial set in 4-6 hour, 24-36 hour cement slurry sets, form layering sealing port, thus reach permanent stagnant water effect.
In karst or Bed Rock Region, groundwater occurrence is in Karst Fissures and karst, and because karst strata Formed age is different, the lithology on stratum, composition, structure are different, therefore composes underground water hydraulic characteristic, the Features of Hydrochemistry difference of depositing different water cut layer.The object of individual well multilayer position monitor well is in a monitor well, adopts the mode of layering shut-in well, realizes the monitoring of different water cut layer water level and water quality simultaneously.Individual well multilayer position monitor well adopts the continuous multi-channel testing of single hole to realize carrying out monitoring, carrying out shutoff sealing at relative water resisting layer in aquifer, as
accompanying drawing 1.Layering water-stopping method adopts biological expansion layering sealing, mainly by designing the port of temporary plugging sealing bottom relative water resisting layer in advance, carrying out grout injection, reach the effect of permanent shutoff sealing on the top of port.
The general principle of biological plavini:
Utilize the hydraulic cement effect of cement, utilize cement paste the characteristic of setting and harden under water or can be carried out in wet environment, slurry is become after being stirred by cement plus water, cement paste is injected into the jacking port that underground relative water resisting layer designs in advance by employing Of High Pressure Grouting Technology, cement paste better can harden in water, and can the material such as sand, stone is cemented together securely, cement paste just initial set in 6 hours, within 24-36 hour, cement setting forms some strength, can formation impervious layer cemented together with periphery rock stratum, thus prevent the permeability of underground water.The performance of cement strength increased along with the time, just increased complete to the regular hour, and after general 1 year, gain in strength stops.
The key component of layering sealing is the design of the port of relative water resisting layer, the design of lower port must ensure that grout pouring arrives set water barrier position, can not infect or leak into other positions, aquifer or relative water resisting layer position, therefore the port design of relative water resisting layer position have employed the dual backwater effect that flange coordinates biological expanding material (main material is sea-tangle), serves a pressure effect in addition to lower floor's artesian water.
This underground water biological expansion layering water-stopping method is significant to the water level in each aquifer, In Limestone Area, water quality monitoring, prevent the permeability of underground water, bottom underground water is prevented to enter into upper aqueous layer along fissure-plane, ensure that each aquifer, without string layer, reaches the effect of permanent shutoff sealing in observation process.
Claims (3)
1. underground water biological expansion layering water-stopping method, its feature comprises following operating procedure:
(1) according to the formation information that drill hole sampling obtains, accurately obtain the position of aquifer and relative water resisting layer, in conjunction with relative water resisting layer position welding flange in the monitoring pipe of multilayer position: specifically weld one group of flange respectively on the multilayer position monitoring pipe outer wall of each relative water resisting layer lower position, on each group of flange of monitoring pipe outside, multilayer position, correspondence is provided with the circular hole passed for Grouting Pipe group respectively;
(2) by multiple Grouting Pipe through circular hole multilayer position monitoring pipe external flanges dish being used for Grouting Pipe group and passing, the bottom of each Grouting Pipe is arranged on the top of one group of flange corresponding to each relative water resisting layer bottom respectively;
(3) parcel kelp layer is wound around in the space between the list group flange in the monitoring pipe of multilayer position is upper and lower; Multilayer position monitoring pipe, Grouting Pipe, kelp layer between flange and flange are mounted to as a whole and Xiang Jingzhong is delivered to the position arranged in well;
(4) according to the thickness of each relative water resisting layer, the cement slurry volume of casting above the flange calculating corresponding each relative water resisting layer position, is needed;
(5) treat that sea-tangle imbibition is extremely by the well internal pore temporary plugging of each group of flange periphery of monitoring pipe outside, multilayer position, the cement paste of each respective volume amount adopting Grouting Pipe to calculate in the flange top casting step (4) on each kelp layer top respectively, cement paste initial set in 4-6 hour, 24-36 hour cement slurry sets, form layering sealing port, complete permanent layering sealing.
2. underground water according to claim 1 biological expansion layering water-stopping method, it is characterized in that: the quantity of one group of flange on the multilayer position monitoring pipe outer wall that described each relative water resisting layer bottom is corresponding is 2, and the distance between described one group of 2 flange is 2-4 rice.
3. underground water according to claim 1 and 2 biological expansion layering water-stopping method, it is characterized in that: described multilayer position monitoring pipe is continuous multichannel PVC antipriming pipe, this continuous multichannel PVC antipriming pipe can be implemented in a wellhole and carries out sampling of water quality and monitoring to multiple aquifer simultaneously.
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| CN201510522125.5A CN105155591B (en) | 2015-08-21 | 2015-08-21 | Underground aquatic organism expands layering water-stopping method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984900A (en) * | 2019-12-09 | 2020-04-10 | 北京慧坤科技有限公司 | Device and method for stopping water in drilling |
| 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 |
| CN114527253A (en) * | 2022-03-02 | 2022-05-24 | 山东省水利科学研究院 | Seawater intrusion layered monitoring device and method |
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| WO2007012340A1 (en) * | 2005-07-26 | 2007-02-01 | Edi Exploration Drilling International Gmbh | Sealing material used for building wells and filling underground hollow spaces, especially deep boreholes |
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| WO2007012340A1 (en) * | 2005-07-26 | 2007-02-01 | Edi Exploration Drilling International Gmbh | Sealing material used for building wells and filling underground hollow spaces, especially deep boreholes |
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| WO2014137314A1 (en) * | 2013-03-04 | 2014-09-12 | Halliburton Energy Services, Inc. | Abandonment and containment system for gas wells |
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| CN110984900A (en) * | 2019-12-09 | 2020-04-10 | 北京慧坤科技有限公司 | Device and method for stopping water in drilling |
| 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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| NL2034107A (en) * | 2022-03-02 | 2023-09-11 | Water Resources Res Inst Shandong Province | Layered monitoring device and method for seawater intrusion |
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