CN113405968A - Economic and rapid permeability coefficient determination method and device - Google Patents
Economic and rapid permeability coefficient determination method and device Download PDFInfo
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- CN113405968A CN113405968A CN202110676333.6A CN202110676333A CN113405968A CN 113405968 A CN113405968 A CN 113405968A CN 202110676333 A CN202110676333 A CN 202110676333A CN 113405968 A CN113405968 A CN 113405968A
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- 230000035699 permeability Effects 0.000 title claims abstract description 90
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- 230000035484 reaction time Effects 0.000 claims abstract description 30
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- 238000006243 chemical reaction Methods 0.000 claims description 5
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- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
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Abstract
The invention discloses an economic and rapid permeability coefficient determining method and device, wherein the method comprises the steps of drilling a detection well, drilling at least one horizontal hole in each geological layer by the detection well, recording the height between the horizontal hole and the ground, arranging at least one group of moisture sensors in the horizontal holes, and respectively connecting the moisture sensors with a collecting device; backfilling the detection well after the water sensor is arranged; drilling a water permeating groove at one side of the detection well, injecting water into the water permeating groove, respectively acquiring reaction time when the geological stratification moisture sensor reacts, and respectively converting the vertical permeability coefficient of each geological stratification by a processing module in the acquisition device; and (2) drilling a water injection well at one side of the detection well, injecting water into the water injection well to the well mouth after the water injection well is drilled, timing by adopting an acquisition device while injecting water, respectively acquiring reaction time when each geological stratification moisture sensor reacts, and respectively converting the horizontal permeability coefficient of each geological stratification by a processing module in the acquisition device.
Description
Technical Field
The invention relates to the technical field of geological exploration and survey, in particular to an economic and rapid permeability coefficient determination method.
Background
In the traditional geological survey process, when the permeability of a certain area is measured, a detection well is generally drilled, a plurality of observation wells are drilled at certain intervals around the detection well, then water is injected into the detection well, the observation wells are simultaneously drilled with sounding water seepage, the depth of the observation well, the distance between the observation well and the detection well and the time difference between water seepage and water beginning of water injection are recorded, the penetration rate is obtained through conversion, and the penetration coefficient is obtained through the penetration rate.
The method needs manual observation and recording of relevant data, the permeation rate is very slow generally, the observation wells spaced by 5 meters have water seepage phenomenon, and the time is 1-2 days, so that once the manual work is neglected, errors can be caused in the determined permeation rate; moreover, this method can only be converted to an overall average permeability from a plurality of observation wells.
Disclosure of Invention
The invention aims to provide an economical and rapid permeability coefficient determining method and device to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an economic and rapid permeability coefficient determination method comprises the following steps:
drilling a detection well, acquiring geological layers of the area, and recording the depth of each geological layer;
at least one horizontal hole is drilled in each geological layer by a detection well, the height between the horizontal hole and the ground is recorded, at least one group of moisture sensors are arranged in the horizontal hole, and the moisture sensors are respectively connected with a collecting device; backfilling the detection well after the water sensor is arranged;
drilling a permeable groove at one side of the detection well, injecting water into the permeable groove, timing by adopting an acquisition device while injecting the water, respectively acquiring reaction time when each geological stratification moisture sensor reacts, and respectively converting the vertical permeability coefficient of each geological stratification by a processing module in the acquisition device;
drilling a water injection well at one side of the detection well, injecting water into the water injection well after the water injection well is drilled to a well mouth, timing by adopting an acquisition device while injecting water, respectively acquiring reaction time when each geological stratification moisture sensor reacts, and respectively converting the horizontal permeability coefficient of each geological stratification by a processing module in the acquisition device;
and converting the vertical permeability coefficient and the horizontal permeability coefficient to obtain the comprehensive permeability coefficient of each geological layer and the overall permeability coefficient of the whole region.
Further, the processing module respectively converting the vertical permeability coefficient of each geological layer comprises:
the height between the moisture sensor and the ground and the reaction time of the moisture sensor are respectively obtained, the permeation speed of the geological stratification corresponding to the moisture sensor is obtained through the processing module, and the vertical permeability coefficient of the corresponding geological stratification is obtained through conversion of the permeation speed.
Further, the processing module respectively converting the horizontal permeability coefficient of each geological stratification comprises:
and respectively acquiring the distance between the moisture sensor and the water injection well, acquiring the reaction time of the moisture sensor, acquiring the permeation speed of the geological stratification corresponding to the moisture sensor by the processing module, and converting the permeation speed to obtain the horizontal permeability coefficient of the corresponding geological stratification.
Furthermore, the depth of the water seepage groove is 60-100CM, and each moisture sensor is positioned right below the water seepage groove.
Further, the water in the water permeating groove is kept not less than 30% of the depth of the water permeating groove after water is injected into the water permeating groove.
Further, the distance between the water injection well and the detection well is 5-200 meters.
Further, the injection well maintains the water level in the injection well during injection above 50% of the distance from the surface of the uppermost moisture sensor.
The invention also provides a device for determining the economic and rapid permeability coefficient, which comprises
A plurality of moisture sensors disposed within each geological formation,
a positioning device for acquiring the position of each moisture sensor,
the moisture sensor is respectively connected with the monitoring device and the positioning device,
a setting module, an acquisition module, a timing module and a processing module are arranged in the monitoring device;
the setting module is used for setting the timing module to time when the water seepage tank or the water injection well injects water,
the acquisition module is used for acquiring an initial signal of the moisture sensor in real time, and recording the time T of the initial signal acquired by the moisture sensor by the timing module while acquiring the initial signal of the moisture sensor;
and the processing module is used for respectively converting the permeability coefficient of each geological layer.
Further, the processing module respectively converting the permeability coefficient of each geological layer comprises:
respectively acquiring the height between the moisture sensor and the ground, acquiring the reaction time of the moisture sensor, acquiring the permeation speed of the geological stratification corresponding to the moisture sensor by the processing module, and converting the permeation speed to obtain the vertical permeability coefficient of the corresponding geological stratification; or
And respectively acquiring the distance between the moisture sensor and the water injection well, acquiring the reaction time of the moisture sensor, acquiring the permeation speed of the geological stratification corresponding to the moisture sensor by the processing module, and converting the permeation speed to obtain the horizontal permeability coefficient of the corresponding geological stratification.
Compared with the prior art, the invention has the beneficial effects that:
firstly, the method comprises the following steps: the invention can measure the vertical permeability coefficient and the horizontal permeability coefficient of each geological layer, the permeability coefficient of each geological layer can be obtained according to the vertical permeability coefficient and the horizontal permeability coefficient, the integral permeability coefficient can be obtained according to the permeability coefficient of each geological layer, and the measured result is more accurate.
Secondly, the method comprises the following steps: the invention automatically collects the data through the monitoring device, has small error and does not need manual intervention.
Drawings
FIG. 1 is a schematic diagram of the frame of the apparatus of the present invention;
fig. 2 is a schematic diagram of a split module framework according to the present invention.
Detailed Description
The present invention will be described in detail with reference to specific embodiments.
Referring to fig. 1 and 2, the invention provides an economic and rapid permeability coefficient determination method, which comprises the following steps:
a detection well 1 is drilled, geology in the detection well 1 is analyzed, geological stratification of the region is obtained, referring to fig. 1, geological stratification A, geological stratification B and geological stratification C are exemplarily depicted in fig. 1, the geological stratification A, the geological stratification B and the geological stratification C have different geological structures, the permeability of the geological stratification A is different, the geological stratification B and the geological stratification C have obvious boundaries, and the depths of the geological stratification A, the geological stratification B and the geological stratification C can be obtained by analyzing the geological structures and recorded;
respectively digging at least one horizontal hole in a geological layer A, a geological layer B and a geological layer C by a detection well, preferably, respectively digging 3-5 horizontal holes with different heights in the geological layer A, the geological layer B and the geological layer C by the detection well, recording the height of each horizontal hole and the ground, arranging at least one group of moisture sensors in the horizontal holes at intervals, combining the moisture sensors of each geological layer into a moisture sensor group, numbering the moisture sensors, connecting the moisture sensors one by a monitoring device, and backfilling the detection well after the moisture sensors are arranged; referring to fig. 1, in fig. 1 a first moisture sensor group 100 is disposed within a geological formation a, a second moisture sensor group 101 is disposed within a geological formation B, a third moisture sensor group 102 is disposed within a geological formation C,
a water seepage groove 2 is drilled on one side of the detection well 1, the distance between the water seepage groove 2 and a well mouth is 0-5 m, the depth of the water seepage groove is 60-100CM, and each moisture sensor is positioned right below the water seepage groove. And injecting water into the water permeating groove 2, and keeping the water in the water permeating groove 2 not less than 30% of the depth of the water permeating groove after the water is injected into the water permeating groove 2. Timing by adopting an acquisition device while injecting water, respectively acquiring reaction time when the moisture sensors in the first moisture sensor group 100 in the geological stratification A respectively react, and respectively converting the vertical permeability coefficient of each geological stratification by a processing module in the acquisition device; respectively acquiring reaction time when the moisture sensors in the second moisture sensor group 101 in the geological layer B respectively react, and respectively converting the vertical permeability coefficient of each geological layer by a processing module in the acquisition device; respectively acquiring reaction time when the moisture sensors in the third moisture sensor group 102 in the geological stratification C respectively react, and respectively converting the vertical permeability coefficient of each geological stratification by a processing module in the acquisition device;
and after the vertical permeability coefficient is measured, drilling a water injection well 3 on one side of the detection well, wherein the distance between the water injection well and the detection well is 5-200 meters. And injecting water into the water injection well 3 after the well is drilled to the well mouth, wherein the water level of the water injection well is kept higher than 50% of the distance between the uppermost water sensor and the ground surface during water injection. Timing by adopting an acquisition device while injecting water, respectively acquiring reaction time when the moisture sensors in the first moisture sensor group 100 in the geological stratification A respectively react, and respectively converting the horizontal permeability coefficient of each geological stratification by a processing module in the acquisition device; respectively acquiring reaction time when the moisture sensors in the second moisture sensor group 101 in the geological stratification B respectively react, and respectively converting the horizontal permeability coefficient of each geological stratification by a processing module in the acquisition device; respectively acquiring reaction time when the moisture sensors in the third moisture sensor group 102 in the geological stratification C respectively react, and respectively converting the horizontal permeability coefficient of each geological stratification by a processing module in the acquisition device;
and converting the vertical permeability coefficient and the horizontal permeability coefficient to obtain the comprehensive permeability coefficient of each geological layer and the overall permeability coefficient of the whole region.
The processing module respectively converts the vertical permeability coefficient of each geological layer, and the conversion comprises the following steps:
respectively acquiring reaction time when the moisture sensors in the first moisture sensor group 100 in the geological stratification A respectively react, and respectively converting the vertical permeability coefficient of each geological stratification by a processing module in the acquisition device; respectively acquiring reaction time when the moisture sensors in the second moisture sensor group 101 in the geological layer B respectively react, and respectively converting the vertical permeability coefficient of each geological layer by a processing module in the acquisition device; respectively acquiring reaction time when the moisture sensors in the third moisture sensor group 102 in the geological stratification C respectively react, and respectively converting the vertical permeability coefficient of each geological stratification by a processing module in the acquisition device;
the height between each moisture sensor and the ground is obtained, the reaction time of the moisture sensors is obtained, the permeation speed of the geological stratification corresponding to the moisture sensors is obtained through the processing module, and the vertical permeability coefficient of the corresponding geological stratification is obtained through conversion of the permeation speed.
Further, the processing module respectively converting the horizontal permeability coefficient of each geological stratification comprises:
respectively acquiring reaction time when the moisture sensors in the first moisture sensor group 100 in the geological stratification A respectively react, and respectively converting the horizontal permeability coefficient of each geological stratification by a processing module in the acquisition device; respectively acquiring reaction time when the moisture sensors in the second moisture sensor group 101 in the geological stratification B respectively react, and respectively converting the horizontal permeability coefficient of each geological stratification by a processing module in the acquisition device; respectively acquiring reaction time when the moisture sensors in the third moisture sensor group 102 in the geological stratification C respectively react, and respectively converting the horizontal permeability coefficient of each geological stratification by a processing module in the acquisition device;
and respectively acquiring the distance between each moisture sensor and the water injection well, acquiring the reaction time of the moisture sensor, acquiring the permeation speed of the geological stratification corresponding to the moisture sensor by the processing module, and converting the permeation speed to obtain the horizontal permeability coefficient of the corresponding geological stratification.
The invention also provides a device for determining the economic and rapid permeability coefficient, which comprises
A plurality of moisture sensors disposed within each geological formation,
a positioning device for acquiring the position of each moisture sensor,
the moisture sensor is respectively connected with the monitoring device and the positioning device,
a setting module, an acquisition module, a timing module and a processing module are arranged in the monitoring device;
the setting module is used for setting the timing module to time when the water seepage tank or the water injection well injects water,
the acquisition module is used for acquiring an initial signal of the moisture sensor in real time, and recording the time T of the initial signal acquired by the moisture sensor by the timing module while acquiring the initial signal of the moisture sensor;
and the processing module is used for respectively converting the permeability coefficient of each geological layer.
Further, the processing module respectively converting the permeability coefficient of each geological layer comprises:
respectively acquiring the height between the moisture sensor and the ground, acquiring the reaction time of the moisture sensor, acquiring the permeation speed of the geological stratification corresponding to the moisture sensor by the processing module, and converting the permeation speed to obtain the vertical permeability coefficient of the corresponding geological stratification; or
And respectively acquiring the distance between the moisture sensor and the water injection well, acquiring the reaction time of the moisture sensor, acquiring the permeation speed of the geological stratification corresponding to the moisture sensor by the processing module, and converting the permeation speed to obtain the horizontal permeability coefficient of the corresponding geological stratification.
The invention can measure the vertical permeability coefficient and the horizontal permeability coefficient of each geological layer, the permeability coefficient of each geological layer can be obtained according to the vertical permeability coefficient and the horizontal permeability coefficient, the integral permeability coefficient can be obtained according to the permeability coefficient of each geological layer, and the measured result is more accurate.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (9)
1. An economic and rapid permeability coefficient determination method is characterized by comprising the following steps:
drilling a detection well, acquiring geological layers of the area, and recording the depth of each geological layer;
at least one horizontal hole is drilled in each geological layer by a detection well, the height between the horizontal hole and the ground is recorded, at least one group of moisture sensors are arranged in the horizontal hole, and the moisture sensors are respectively connected with a collecting device; backfilling the detection well after the water sensor is arranged;
drilling a permeable groove at one side of the detection well, injecting water into the permeable groove, timing by adopting an acquisition device while injecting the water, respectively acquiring reaction time when each geological stratification moisture sensor reacts, and respectively converting the vertical permeability coefficient of each geological stratification by a processing module in the acquisition device;
drilling a water injection well at one side of the detection well, injecting water into the water injection well after the water injection well is drilled to a well mouth, timing by adopting an acquisition device while injecting water, respectively acquiring reaction time when each geological stratification moisture sensor reacts, and respectively converting the horizontal permeability coefficient of each geological stratification by a processing module in the acquisition device;
and converting the vertical permeability coefficient and the horizontal permeability coefficient to obtain the comprehensive permeability coefficient of each geological layer and the overall permeability coefficient of the whole region.
2. The economic and rapid permeability coefficient determination method of claim 1, wherein the processing module separately scaling the vertical permeability coefficient of each geological layer comprises:
the height between the moisture sensor and the ground and the reaction time of the moisture sensor are respectively obtained, the permeation speed of the geological stratification corresponding to the moisture sensor is obtained through the processing module, and the vertical permeability coefficient of the corresponding geological stratification is obtained through conversion of the permeation speed.
3. The economic and rapid permeability coefficient determination method of claim 1, wherein the processing module separately scaling the horizontal permeability coefficient of each geological layer comprises:
and respectively acquiring the distance between the moisture sensor and the water injection well, acquiring the reaction time of the moisture sensor, acquiring the permeation speed of the geological stratification corresponding to the moisture sensor by the processing module, and converting the permeation speed to obtain the horizontal permeability coefficient of the corresponding geological stratification.
4. The economical and rapid permeability coefficient determining method of claim 1, wherein the depth of the permeable tank is 60-100CM, and each moisture sensor is located right below the permeable tank.
5. The economical and rapid permeability coefficient determining method of claim 1, wherein the water in the permeable tank is maintained not less than 30% of the depth of the permeable tank after the permeable tank is filled with water.
6. The economical and rapid permeability coefficient determination method of claim 1, wherein the distance between the water injection well and the exploration well is between 5 and 200 meters.
7. The economic and rapid permeability coefficient determination method of claim 1 wherein the water injection well maintains the water level in the water injection well during a waterflood above 50% of the distance from the surface of the uppermost moisture sensor.
8. An apparatus for economic and rapid permeability coefficient determination, comprising
A plurality of moisture sensors disposed within each geological formation,
a positioning device for acquiring the position of each moisture sensor,
the moisture sensor is respectively connected with the monitoring device and the positioning device,
a setting module, an acquisition module, a timing module and a processing module are arranged in the monitoring device;
the setting module is used for setting the timing module to time when the water seepage tank or the water injection well injects water,
the acquisition module is used for acquiring an initial signal of the moisture sensor in real time, and recording the time T of the initial signal acquired by the moisture sensor by the timing module while acquiring the initial signal of the moisture sensor;
and the processing module is used for respectively converting the permeability coefficient of each geological layer.
9. The apparatus for economic and rapid permeability coefficient determination according to claim 8, wherein the processing module respectively scaling the permeability coefficient of each geological layer comprises:
respectively acquiring the height between the moisture sensor and the ground, acquiring the reaction time of the moisture sensor, acquiring the permeation speed of the geological stratification corresponding to the moisture sensor by the processing module, and converting the permeation speed to obtain the vertical permeability coefficient of the corresponding geological stratification; or
And respectively acquiring the distance between the moisture sensor and the water injection well, acquiring the reaction time of the moisture sensor, acquiring the permeation speed of the geological stratification corresponding to the moisture sensor by the processing module, and converting the permeation speed to obtain the horizontal permeability coefficient of the corresponding geological stratification.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980842A (en) * | 2012-12-11 | 2013-03-20 | 重庆交通大学 | System and method for testing anisotropy permeability coefficient of layered coarse-grained soil body |
| CN108120663A (en) * | 2017-12-20 | 2018-06-05 | 北京林业大学 | The measurement device and its construction method of a kind of soil permeability coefficient |
| CN108303512A (en) * | 2018-01-07 | 2018-07-20 | 江西理工大学 | A kind of method of in-situ test soil-water characteristic curve |
| CN112525797A (en) * | 2020-11-27 | 2021-03-19 | 中国电建集团成都勘测设计研究院有限公司 | Soil body horizontal permeability coefficient testing device |
| CN112859184A (en) * | 2021-01-11 | 2021-05-28 | 河北掌慧测控科技有限公司 | Underground water flow field monitoring system and method |
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- 2021-06-18 CN CN202110676333.6A patent/CN113405968A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980842A (en) * | 2012-12-11 | 2013-03-20 | 重庆交通大学 | System and method for testing anisotropy permeability coefficient of layered coarse-grained soil body |
| CN108120663A (en) * | 2017-12-20 | 2018-06-05 | 北京林业大学 | The measurement device and its construction method of a kind of soil permeability coefficient |
| CN108303512A (en) * | 2018-01-07 | 2018-07-20 | 江西理工大学 | A kind of method of in-situ test soil-water characteristic curve |
| CN112525797A (en) * | 2020-11-27 | 2021-03-19 | 中国电建集团成都勘测设计研究院有限公司 | Soil body horizontal permeability coefficient testing device |
| CN112859184A (en) * | 2021-01-11 | 2021-05-28 | 河北掌慧测控科技有限公司 | Underground water flow field monitoring system and method |
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