CN118425003B - Layered hydrogeologic testing method, computer device and storage medium - Google Patents
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- 238000012360 testing method Methods 0.000 title claims abstract description 111
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 155
- 230000035699 permeability Effects 0.000 claims abstract description 38
- 239000011435 rock Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 15
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- 230000015572 biosynthetic process Effects 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 13
- 238000005553 drilling Methods 0.000 claims description 6
- 238000010998 test method Methods 0.000 claims description 6
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- 230000008595 infiltration Effects 0.000 claims description 4
- 238000001764 infiltration Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 6
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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Abstract
本发明提供了一种分层水文地质测试方法、计算机设备及存储介质，涉及深埋隧洞勘测技术领域，分层水文地质测试方法采用下封隔器和上封隔器依次置入钻孔，通过下封隔器和上封隔器膨胀将卸压容器封闭在目标试验段内，开启卸压器件使目标试验段内的水流入卸压容器，使目标试验段水压迅速减少，卸压容器内气压与目标试验段水压相等，可以在假定温度恒定的条件下，根据理想气体状态平衡关系以及卸压容器内气压与目标试验段水压之间的动态平衡关系推算岩层渗透系数，还可以根据目标试验段水压与时间的关系，利用水位恢复法求解岩层渗透系数，解决了深埋隧洞勘察缺少可靠水文地质试验数据的技术问题，为隧洞支护和衬砌设计提供准确的技术参照。
The invention provides a layered hydrogeological testing method, a computer device and a storage medium, and relates to the technical field of deep buried tunnel survey. The layered hydrogeological testing method adopts a lower packer and an upper packer to be sequentially placed in a borehole, and a pressure relief container is sealed in a target test section by the expansion of the lower packer and the upper packer, and a pressure relief device is opened to allow water in the target test section to flow into the pressure relief container, so that the water pressure in the target test section is rapidly reduced, and the air pressure in the pressure relief container is equal to the water pressure in the target test section. Under the condition of assuming constant temperature, the permeability coefficient of the rock formation can be deduced according to the equilibrium relationship of an ideal gas state and the dynamic equilibrium relationship between the air pressure in the pressure relief container and the water pressure in the target test section. The permeability coefficient of the rock formation can also be solved by a water level recovery method according to the relationship between the water pressure in the target test section and time, thereby solving the technical problem of lack of reliable hydrogeological test data in deep buried tunnel survey and providing an accurate technical reference for tunnel support and lining design.
Description
Technical Field
The invention relates to the technical field of deep-buried tunnel construction survey, in particular to a layered hydrogeology test method, computer equipment and a storage medium.
Background
For a deep buried tunnel, the height difference between a natural underground water surface line and a tunnel roof is large, if the underground water pressure head is analyzed according to a hydrostatic pressure calculation formula, a relatively large underground water pressure head is formed around the tunnel, and the buried depth of the deep buried tunnel actually constructed at present is at most more than kilometers.
In some tunnel designs, a drainage mode is adopted for treating the underground water, and the lining bearing water pressure is not even considered in the railway tunnel design, so obvious design defects and potential safety hazards exist.
The submersible pump must be placed in the target test section, so that the diameter of the drilled hole must be large enough, and when the lift is required to be 400-1000 meters, the volume of the submersible pump must be increased along with the increase of the lift, the drilling diameter is required to be large along with the increase of the lift, the packer inflation expansion process is complex, and once an accident occurs in the pumping test, the processing time is long, so that the cost of hydrogeology drilling is high, and the hydrogeology drilling is not effectively popularized.
The integrity of the stratum of the deeply buried tunnel is good, the permeability of the stratum is low, the connection between the underground water in the nearby aquifer and the underground water at the upper part is weak, the external water pressure reduction coefficient is low, the hydraulic connection between the underground water at the lower part of the drill hole and the underground water at the upper part and the lower part of the whole drill hole occurs when the drill hole is drilled, at the moment, the underground water pressure at the lower part of the drill hole is far higher than the original underground water pressure of the stratum before the drill hole is drilled, in the current layering water pressure test, the packer can separate the hydraulic connection between the target test section and the upper and lower strata, but the external water pressure of the target test section after separation still maintains the previous high water pressure, and at present, no device and method for rapidly dissipating the high underground water pressure stored in the target test section in the investigation period exist, so as to measure the underground water pressure of the target stratum after recovery. Among various pumping tests and pumping test methods, a test method which is suitable for a deep-buried tunnel and is simpler, more convenient and quicker is not found.
Disclosure of Invention
The invention aims to provide a layered hydrogeologic test method, computer equipment and a storage medium, so as to relieve the technical problem that accurate hydrogeologic test results are difficult to obtain in a deep-buried tunnel.
In a first aspect, the present invention provides a method of stratified hydrogeologic testing, comprising the steps of:
sequentially placing a lower packer and an upper packer into a borehole, and expanding the lower packer and the upper packer to seal a pressure relief container in a target test section between the lower packer and the upper packer;
Opening a pressure relief device connected to the pressure relief container to enable water in the target test section to flow into the pressure relief container, so that the pressure relief container and the target test section are equal in water pressure;
Detecting the water pressure of the target test section, and under the condition of assuming constant temperature, calculating the permeability coefficient of the rock stratum according to the ideal gas state balance relation and the dynamic balance relation between the air pressure in the pressure relief container and the water pressure of the target test section; or detecting the water pressure of the target test section, converting the water pressure into water level, and solving the permeability coefficient of the rock stratum according to a water level recovery method.
With reference to the first aspect, the present invention provides a first possible implementation manner of the first aspect, wherein the step of detecting the target test section water pressure, under the condition that the temperature is assumed to be constant, calculates a permeability coefficient of the rock stratum according to an ideal gas state balance relationship and a dynamic balance relationship between the gas pressure in the pressure relief container and the target test section water pressure includes:
Calculating the total infiltration volume of the target test section according to the volume of the gas in the pressure relief container;
The total volume of the water seepage is used for deriving time, and the corresponding relation between the water seepage flow and the water pressure of the target test section is established;
And establishing a corresponding relation between the water seepage flow and the rock stratum permeability coefficient according to a Gilin Stokes and babush formula, and deducing and calculating the rock stratum permeability coefficient according to the water pressure of the target test section.
With reference to the first aspect, the present invention provides a second possible implementation manner of the first aspect, wherein the step of detecting the target test section water pressure and under the condition that the temperature is assumed to be constant, calculating the permeability coefficient of the rock stratum according to the ideal gas state balance relationship and the dynamic balance relationship between the gas pressure in the pressure relief container (003) and the target test section water pressure includes:
According to the formula Calculating formation permeability coefficients；
Wherein,The pressure inside the container is relieved at the time t=0, the value is atmospheric pressure,Pa；The volume of gas in the pressure relief container at time t=0 is in cubic meters; a is an adjustment coefficient, a=1.60; l is the distance between the top of the lower packer and the bottom of the upper packer, and the unit is meter; r is the drilling radius; In order to reduce the water level to a deep level, ，For the pressure before the target test section is packed,For the air pressure in the pressure relief container at the time t, the air pressure in the pressure relief container is equal to the water pressure of the target test section after the pressure relief device is started,，And (3) a functional relation of the water pressure of the target test section and time.
With reference to the first aspect, the present invention provides a third possible implementation manner of the first aspect, wherein the step of detecting the water pressure of the target test section and converting the water pressure into a water level, and solving the permeability coefficient of the rock stratum according to a water level recovery method includes:
According to the formula Calculating formation permeability coefficients；
Wherein,The radius of the equivalent vertical pipe is the radius of the cross section of the pressure relief container; is the height difference between the equivalent water level and the bearing water level at the first moment, The unit is meter for the height difference between the equivalent water level and the bearing water level at the second moment; time in seconds; is the height difference between the equivalent water level and the top plate of the pressure-bearing water layer at the first moment, The unit is meter for the height difference between the equivalent water level and the top plate of the pressure-bearing water layer at the second moment.
In a second aspect, the present invention provides a computer device comprising: a memory and a processor; the memory is for storing a number of programs which when executed by the processor implement the layered hydrogeologic testing method of the first aspect.
In a third aspect, the present invention provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the hierarchical hydrogeologic testing method of the first aspect.
In a fourth aspect, the present invention provides a layered hydrogeologic testing apparatus comprising: the device comprises a lower packer, an upper packer, a pressure relief container, a pressure relief device and an osmometer;
the lower packer and the upper packer are arranged at intervals from bottom to top;
The pressure relief device and the osmoticum pressure device are respectively arranged between the lower packer and the upper packer;
The pressure relief device is connected to the pressure relief vessel.
With reference to the fourth aspect, the lower packer and the upper packer are each provided with a filling chamber, which is in fluid communication with a pressurizing means.
With reference to the fourth aspect, the opening of the pressure relief container is provided with a replaceable sealing film;
The pressure relief device includes: the ejector pin of the driving device is connected with the driving device in a transmission way, and the ejector pin faces the sealing film.
With reference to the fourth aspect, the osmometer is connected to a display and/or a processor.
The embodiment of the invention has the following beneficial effects: the lower packer and the upper packer are sequentially arranged in a borehole, the pressure relief container is sealed in the target test section through the expansion of the lower packer and the upper packer, the pressure relief device is opened to enable water in the target test section to flow into the pressure relief container until the air pressure of the pressure relief container is equal to the water pressure of the target test section, then under the condition that the assumed temperature is constant, the rock stratum permeability coefficient can be calculated according to the ideal gas state balance relation and the dynamic balance relation between the air pressure in the pressure relief container and the water pressure of the target test section, the rock stratum permeability coefficient can be solved according to the water level recovery method, the technical problem that reliable hydrogeological test data are lack in deep-buried tunnel investigation is solved, and more accurate technical reference can be provided for tunnel support and lining design.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the related art, the drawings that are required to be used in the description of the embodiments or the related art will be briefly described, and it is apparent that the drawings in the description below are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic diagram of a layered hydrogeologic testing apparatus provided by an embodiment of the present invention;
FIG. 2 is a schematic view of a thimble of a layered hydrogeologic testing apparatus according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken at the A-A position of FIG. 2;
fig. 4 is a cross-sectional view of the B-B position of fig. 2.
Icon: 001-lower packer; 002-upper packer; 003-pressure relief vessel; 004-pressure relief device; 401-driving devices; 402-thimble; 4021—neck; 4022-a tip; 005-osmometer; 006-pressurizing means; 007-display.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used merely to describe name differences and are not to be construed as indicating or implying relative importance. Physical quantities in the formulas, unless otherwise noted, are understood to be basic quantities of basic units of the international system of units, or derived quantities derived from the basic quantities by mathematical operations such as multiplication, division, differentiation, or integration.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1, the method for testing layered hydrogeology provided by the embodiment of the invention comprises the following steps: sequentially placing a lower packer 001 and an upper packer 002 into a borehole, and expanding the lower packer 001 and the upper packer 002 to seal a pressure relief container 003 in a target test section between the lower packer 001 and the upper packer 002; opening a pressure relief device 004 connected to the pressure relief container 003 so that water in the target test section flows into the pressure relief container 003, and thus the water pressure of the target test section is rapidly reduced until the air pressure of the pressure relief container 003 is equal to the water pressure of the target test section, wherein the pressure relief container 003 can be configured as an air bag; detecting the water pressure of a target test section, and under the condition of assuming constant temperature, calculating the permeability coefficient of the rock stratum according to the ideal gas state balance relation and the dynamic balance relation between the air pressure in the pressure relief container and the water pressure of the target test section; or detecting the water pressure of the target test section, converting the water pressure into water level, and solving the rock stratum permeability coefficient by using a water level recovery method according to the relation between the water level of the target test section and time.
The layered hydrogeologic testing method is particularly suitable for hydrogeologic tests of upper and lower strata of a deeply buried tunnel, can separate a certain section of a drilled hole independently, can accurately obtain a pressure recovery time and a water pressure distribution curve by releasing pressure and recovering the underground water pressure through the action of water seepage pressure, can obtain the truest underground water pressure data, and can provide data support for accurately calculating the permeability coefficient of the strata. In addition, under the condition of assuming constant temperature, the rock stratum permeability coefficient can be calculated according to the ideal gas state balance relation and the dynamic balance relation between the gas pressure in the pressure relief container and the water pressure of the target test section. Can provide more accurate technical reference for tunnel support and lining design.
In the embodiment of the invention, the step of detecting the water pressure of the target test section and calculating the permeability coefficient of the rock stratum according to the ideal gas state balance relation and the dynamic balance relation between the air pressure in the pressure relief container 003 and the water pressure of the target test section under the condition of assuming constant temperature comprises the following steps: calculating the total infiltration volume of the infiltration target test section according to the volume of the gas in the pressure relief container 003; the total volume of the water seepage is used for deriving time, and the corresponding relation between the water seepage flow and the water pressure of the target test section is established; and establishing a corresponding relation between the water seepage flow and the stratum permeability coefficient according to the Gilin Stokes and the babush formula, and deducing and calculating the stratum permeability coefficient according to the water pressure of the target test section.
The calculation principle of estimating the amount of the permeability of the rock stratum can be deduced by the following steps: under the condition that the gas in the pressure relief container 003 is assumed to be ideal gas, an ideal calculation relation between the air pressure in the pressure relief container 003 and the total volume of the infiltrated water is established; establishing an integral calculation formula of total volume of water seepage by integrating water seepage flow at each moment with respect to time; and combining the ideal calculation relation of the total volume of the infiltrated water with the integral calculation formula of the total volume of the infiltrated water and deriving the time to obtain the relation between the infiltrated water flow at any moment and the water pressure of the target test section at the moment.
In this embodiment, the step of detecting the water pressure of the target test section and estimating the permeability coefficient of the rock formation according to the ideal gas state balance relationship under the condition that the temperature is assumed to be constant includes: according to the formulaCalculating formation permeability coefficients; Wherein,The pressure inside the pressure relief container 003 is released at time t=0, the value is atmospheric pressure,Pa；The volume of gas inside pressure relief vessel 003 at time t=0 in cubic meters; a is an adjustment coefficient, a=1.60; l is the distance between the top of the lower packer 001 and the bottom of the upper packer 002, and the unit is meter; r is the drilling radius; In order to reduce the water level to a deep level, ，For the pressure before the target test section is packed,For the pressure relief of the air pressure inside the container 003 at the time t, the air pressure inside the container 003 is equal to the water pressure of the target test section when the pressure relief device 004 is opened,，The water pressure is a functional relation of the water pressure of the target test section and time.
Specifically, the moment when the ejector pin 402 pierces the sealing film of the pressure relief container 003 is taken as a test starting time point t=0; then, as the external water body continuously permeates into the pressure relief container 003, the gas in the pressure relief container 003 is compressed, the pressure is Pt, and the air volume isAssuming that the temperature is unchanged, the following physical formula is satisfied: And then get 。
Because the water can not be compressed basically, the compression amount of the water is negligible, and the volume of the air in the pressure relief container 003 which is reduced is the total volume of the infiltrated water，. Wherein,The total volume of the water to be permeated is the time t,Air pressure in the pressure relief container 003 at time t=0; The volume of air in pressure relief vessel 003 at time t=0, The air pressure in the pressure relief container 003 at the time t is equal to the water pressure of the target test section; according to actual measurement—Can be fitted to a function pt=f (t).
According to the Gilin Stokes, babush formula: from the following componentsDerived fromThe total volume of the water to be infiltrated is added at the moment tCan pass through the flow rateIntegrating over time: The equation can then be derived: the derivative of t on both sides of the equation is: and further deducing that: By transforming, the permeability coefficient of the rock stratum can be obtained Is calculated according to the formula:。
in an alternative embodiment, the step of detecting the water pressure of the target test section, converting the water pressure into a water level, and solving the permeability coefficient of the rock stratum according to a water level recovery method comprises the following steps: according to the formula Calculating formation permeability coefficients; Wherein,The radius of the equivalent vertical pipe is the radius of the cross section of the pressure relief container 003; is the height difference between the equivalent water level and the bearing water level at the first moment, The unit is meter for the height difference between the equivalent water level and the bearing water level at the second moment; time in seconds; is the height difference between the equivalent water level and the top plate of the pressure-bearing water layer at the first moment, The unit is meter for the height difference between the equivalent water level and the top plate of the pressure-bearing water layer at the second moment. The water level recovery method is adopted to obtain the permeability coefficient of the rock stratum more conveniently.
The computer equipment provided by the embodiment of the invention comprises: a memory and a processor; the memory is used for storing a plurality of programs which when executed by the processor implement the layered hydrogeologic testing method described in the above embodiments.
In another embodiment, a computer-readable storage medium stores a computer program that, when executed by a processor, implements the hierarchical hydrogeologic testing method described in the above embodiment.
Those skilled in the art will appreciate that implementing all or part of the above-described methods in the embodiments may be accomplished by way of a computer program stored in a non-transitory computer readable storage medium, which when executed performs the methods described in the above embodiments.
As shown in fig. 1, a layered hydrogeologic testing apparatus provided in an embodiment of the present invention includes: a lower packer 001, an upper packer 002, a pressure relief container 003, a pressure relief device 004 and an osmometer 005; the lower packer 001 and the upper packer 002 are arranged at intervals from bottom to top; the pressure relief device 004 and the osmometer 005 are respectively arranged between the lower packer 001 and the upper packer 002; the pressure relief device 004 is connected to a pressure relief container 003.
The pressure relief device 004 can be configured as a controllable valve element at the opening of the pressure relief container 003, and the pressure relief and the switching of the closed state of the pressure relief container 003 can be realized by adjusting the opening and closing states of the valve element. The lower packer 001 and the upper packer 002 can seal off a section of the borehole, thereby enabling the layered hydrogeological test apparatus to perform a test method compatible therewith.
Further, the lower packer 001 and the upper packer 002 are each provided with a filling chamber in fluid communication with the pressurizing device 006. The pressurizing device 006 may employ a liquid pump or a high pressure water tank to inject high pressure fluid into the inflation lumen, thereby expanding the lower and upper packers 001 and 002 to effect closure of the targeted test section.
In the embodiment, the pressure relief container 003 is made of a rigid material, and a replaceable sealing film is arranged at an opening of the pressure relief container, wherein the sealing film is made of metal aluminum, and the thickness of the sealing film is 0.2mm; the pressure relief device 004 includes: the driving device 401 and the thimble 402 connected with the driving device 401 in a transmission way, the thimble 402 faces the sealing film, the driving device 401 can drive the thimble 402 to move by adopting a hydraulic or electric telescopic cylinder, so that the thimble 402 can puncture the sealing film, and then water in a target test section can enter the pressure relief container 003, so that the water pressure of the target test section is reduced rapidly. After pressure relief, external groundwater continuously permeates into the target test section due to water pressure difference between the inside and the outside of the target test section, so that the water pressure in the target test section is gradually recovered, and the truest external water pressure data of the lining of the deeply buried tunnel is obtained.
As shown in fig. 2,3 and 4, the ejector pin 402 includes: a neck 4021 and a tip 4022, the neck 4021 being connected to the tip 4022. The cross section of the neck 4021 is configured as a semicircle, the cross section of the tip 4022 is configured as a circle, and after the tip 4022 punctures the sealing film, the opening of the sealing film can be communicated with the semicircle cavity, so that a larger pressure relief flow passage is provided.
In an alternative embodiment, as shown in FIG. 1, the osmometer 005 is coupled to the display 007, or the osmometer 005 is coupled to the processor, it is also possible to have the display 007 and the processor coupled to the osmometer 005, respectively. The display 007 may be used to display not only the test values of the osmometer 005 but also the formation permeability coefficients calculated by the processor.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (5)
1. A layered hydrogeologic testing method, wherein the layered hydrogeologic testing method employs a layered hydrogeologic testing apparatus comprising: a lower packer (001), an upper packer (002), a pressure relief container (003), a pressure relief device (004) and an osmometer (005); the lower packer (001) and the upper packer (002) are arranged at intervals from bottom to top; the pressure relief device (004) and the osmometer (005) are respectively arranged between the lower packer (001) and the upper packer (002); -the pressure relief device (004) is connected to the pressure relief container (003); an opening of the pressure relief container (003) is provided with a replaceable sealing film; the pressure relief device (004) comprises: the sealing device comprises a driving device (401) and a thimble (402) which is in transmission connection with the driving device (401), wherein the thimble (402) faces the sealing film;
the layered hydrogeologic testing method comprises the following steps:
Sequentially placing a lower packer (001) and an upper packer (002) into a borehole, and expanding the lower packer (001) and the upper packer (002) to seal a pressure relief vessel (003) within a target test section between the lower packer (001) and the upper packer (002);
opening a pressure relief device (004) connected to the pressure relief container (003) so that water in the target test section flows into the pressure relief container (003), and the water pressure of the target test section is reduced rapidly until the air pressure in the pressure relief container (003) is equal to the water pressure of the target test section, so that a dynamic balance relationship is formed;
Detecting the water pressure of the target test section, and under the condition of assuming constant temperature, calculating the permeability coefficient of the rock stratum according to the ideal gas state balance relation and the dynamic balance relation between the air pressure in the pressure relief container (003) and the water pressure of the target test section; or detecting the water pressure of the target test section, converting the water pressure into water level, and solving the rock stratum permeability coefficient by using a water level recovery method according to the relation between the water level of the target test section and time;
The step of detecting the water pressure of the target test section, under the condition of assuming constant temperature, calculating the permeability coefficient of the rock stratum according to the ideal gas state balance relation and the dynamic balance relation between the air pressure in the pressure relief container (003) and the water pressure of the target test section comprises the following steps:
Actually measuring the water pressure of a target test section, and calculating the total infiltration volume of the target test section according to the ideal gas state balance relation and the dynamic balance relation between the air pressure in the pressure relief container (003) and the water pressure of the target test section;
The total volume of the water seepage is used for deriving time, and the corresponding relation between the water seepage flow and the water pressure of the target test section is established;
Establishing a corresponding relation between the water seepage flow and the rock stratum permeability coefficient according to Gilin Stokes and babush formulas, so as to deduce and calculate the rock stratum permeability coefficient according to the measured water pressure of the target test section;
The step of detecting the water pressure of the target test section, under the condition of assuming constant temperature, calculating the permeability coefficient of the rock stratum according to the ideal gas state balance relation and the dynamic balance relation between the air pressure in the pressure relief container (003) and the water pressure of the target test section comprises the following steps:
According to the formula Calculating formation permeability coefficients；
Wherein,The pressure inside the pressure relief container (003) is relieved at the time t=0, the value is atmospheric pressure,Pa；The volume of gas inside the pressure relief container (003) at time t=0 is in cubic meters; a is an adjustment coefficient, a=1.60; l is the distance between the top of the lower packer (001) and the bottom of the upper packer (002), and the unit is meter; r is the drilling radius; In order to reduce the water level to a deep level, ，For the pressure of the target test section prior to packing,For the air pressure inside the pressure relief container (003) at the time t, when the pressure relief device (004) is opened, the air pressure inside the pressure relief container (003) is equal to the water pressure of the target test section,，A functional relation between the water pressure and time of the target test section;
The step of detecting the water pressure of the target test section, converting the water pressure into water level and solving the rock stratum permeability coefficient according to a water level recovery method comprises the following steps:
According to the formula Calculating formation permeability coefficients；
Wherein,The radius of the equivalent vertical pipe is the radius of the cross section of the pressure relief container (003); is the height difference between the equivalent water level and the bearing water level at the first moment, The unit is meter for the height difference between the equivalent water level and the bearing water level at the second moment; time in seconds; is the height difference between the equivalent water level and the top plate of the pressure-bearing water layer at the first moment, The unit is meter for the height difference between the equivalent water level and the top plate of the pressure-bearing water layer at the second moment.
2. The layered hydrogeologic testing method according to claim 1, wherein the lower packer (001) and the upper packer (002) are each provided with a filling chamber, which is in fluid communication with a pressurizing means (006).
3. The layered hydrogeologic testing method according to claim 2, wherein the osmometer (005) is connected to a display (007) and/or processor.
4. A computer device, comprising: a memory and a processor;
The memory is adapted to store a number of programs which when executed by the processor implement the layered hydrogeologic testing method of any of claims 1-3.
5. A computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the layered hydrogeological test method according to any of claims 1-3.
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