CN113901546A - Tunnel water inflow calculation method and device - Google Patents
Tunnel water inflow calculation method and device Download PDFInfo
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Abstract
The embodiment of the application provides a method and a device for calculating water inflow of a tunnel, and relates to the field of evaluation of high-temperature heat damage of the tunnel. The method comprises the following steps: determining the buried depth of the underground water level according to the vertical drilling of the research area; determining the corresponding underground water head height and the corresponding underground water head depth of the horizontal drilling hole at different hole depths according to the underground water level burial depth; acquiring the radius of a tunnel, the radius of a horizontal drilling hole and the unit length water inflow of the horizontal drilling hole; acquiring the permeability coefficient and the influence radius of a rock mass according to the radius of a horizontal drilling hole, the unit length water inflow of the horizontal drilling hole, the corresponding underground water head heights and the depths of the horizontal drilling hole at different hole depths; and acquiring the tunnel water inflow of the research area according to the tunnel radius, the hole depth of the horizontal drilling, the underground water head height, the permeability coefficient and the influence radius. The embodiment of the application is used for improving the calculation accuracy of the tunnel water inflow amount.
Description
Technical Field
The application belongs to the field of tunnel high-temperature heat damage assessment, and particularly relates to a tunnel water inflow calculation method, a tunnel water inflow calculation device, electronic equipment and a medium.
Background
At present, in railway construction, a large number of tunnel projects are built. Although the type of tunnel varies, tunnels in hydrogeological complex, particularly strong rock melting zones developing through karst caves, suffer from groundwater hazards to varying degrees during construction and operation. A large number of water inrush disaster examples show that when tunnel engineering relates to a hot water seepage area, the tunnel engineering possibly encounters heat hazards such as hot water and hot gas to threaten safety construction, so that accurate prediction of the water inrush amount of the tunnel has very important significance on design, construction and operation of the tunnel.
In the traditional railway survey, the calculation of the water inflow of the tunnel is mainly based on a water balance method and a groundwater dynamics method. The water balancing method is mainly calculated based on a regional underground water supply and drainage balancing theory; the groundwater dynamics method is mainly characterized in that the groundwater level is determined through vertical drilling, then the permeability coefficient is calculated by utilizing the water quantity and the water level depth drop determined by a pumping test, and the parameters are substituted into a groundwater dynamics calculation formula for calculation. However, the two methods have respective defects in calculating the water inflow amount of the high-temperature hot water in the tunnel, and the main calculation parameters of the water balancing method are empirical parameters, particularly, parameters such as rainfall infiltration coefficients and the like are difficult to obtain, so that the calculation accuracy is low; when the calculation is carried out according to the hydrodynamics method, the thickness and the influence radius of the water-bearing layer of the bedrock water-leaving area are difficult to determine, so that the calculated permeability coefficient has errors and also influences the calculation result. Therefore, how to improve the calculation accuracy of the tunnel water inflow amount is a main problem facing the high-temperature heat hazard of the current tunnel.
Disclosure of Invention
Based on the above, it is necessary to provide a tunnel water inflow calculation method, device, electronic device and medium for how to accurately calculate tunnel water inflow in a complex and difficult mountain area.
In a first aspect, an embodiment of the present application provides a method for calculating a tunnel water inflow amount, where the method includes:
determining the buried depth of the underground water level according to the vertical drilling of the research area;
determining the corresponding underground water head height and the corresponding underground water head depth of the horizontal drilling hole at different hole depths according to the underground water level burial depth;
acquiring the radius of a tunnel, the radius of a horizontal drilling hole and the unit length water inflow of the horizontal drilling hole;
acquiring the permeability coefficient and the influence radius of a rock mass according to the radius of a horizontal drilling hole, the unit length water inflow of the horizontal drilling hole, the corresponding underground water head heights and the depths of the horizontal drilling hole at different hole depths;
and acquiring the tunnel water inflow of the research area according to the tunnel radius, the hole depth of the horizontal drilling hole, the underground water head height, the permeability coefficient and the influence radius.
As an optional implementation manner of the present application, the method further includes:
acquiring the corresponding ground temperature of the horizontal drilling hole at different hole depths and the content of chemical components of underground water;
and determining the source of the high-temperature hot water of the tunnel according to the water inflow of the tunnel, the corresponding ground temperatures of the horizontal drilling holes at different hole depths and the content of chemical components of underground water.
As an optional embodiment of the present application, the acquiring a radius of the tunnel, a radius of the horizontal drilling hole, and a water inflow per unit length of the horizontal drilling hole includes:
acquiring water quantity monitoring data; the water amount monitoring data comprises: the water inflow amount of the drilled hole, the water outlet length of the drilled hole and the corresponding ground temperature in different depths of the horizontal drilled hole;
and determining the unit length water inflow of the horizontal drilling according to the water amount monitoring data.
As an optional implementation manner of the present application, the determining the water inflow per unit length of the horizontal drilling hole according to the water amount monitoring data includes:
and determining the water inflow amount per unit length according to the ratio of the total water inflow amount of the horizontal drilling holes in different hole depths to the water outlet length of the corresponding horizontal drilling holes.
As an optional implementation manner of the present application, the obtaining of the permeability coefficient and the influence radius of the rock mass according to the radius of the horizontal drilling hole, the water inflow amount per unit length of the horizontal drilling hole, the corresponding underground water head height and the corresponding depth of the horizontal drilling hole at different hole depths comprises:
according to the formula K-q (ln R-ln R)0) 2/H and the formula
Performing iterative calculation to obtain the permeability coefficient and the influence radius of the rock mass;
wherein K represents the permeability coefficient of the rock mass, q represents the water inflow per unit length of the horizontal borehole, R represents the influence radius, R0Is the radius of the horizontal drilling hole, and H is the underground water head height corresponding to different hole depths of the horizontal drilling hole.
As an optional embodiment of the present application, the acquiring the tunnel water inflow amount of the research area according to the tunnel radius, the hole depth of the horizontal drilling, the underground water head height, the permeability coefficient, and the influence radius includes:
according to formula QsCalculating the ratio of 2KHL/(ln R-ln R) to obtain the tunnel water inflow of the research area;
wherein Q issThe water inflow of the tunnel is shown as K, the permeability coefficient of the rock mass is shown as K, L is the hole depth of the horizontal drilling hole, H is the underground water head height corresponding to different hole depths of the horizontal drilling hole, R is the influence radius, and R is the tunnel radius.
As an optional embodiment of the present application, the determining the source of the high-temperature hot water in the tunnel according to the water inflow amount of the tunnel, the corresponding ground temperature of the horizontal drilling at different hole depths, and the content of the chemical components in the underground water includes:
determining whether the water point is hot water or not according to the tunnel water inflow and the ground temperature corresponding to the horizontal drilling hole at different hole depths;
and if the water temperature of the water outlet point is higher than the preset temperature, determining that the water outlet point is hot water and determining whether the water outlet point is influenced by deep circulating water upwelling or not by combining the contents of chemical components of the underground water.
In a second aspect, an embodiment of the present application provides a tunnel water inflow calculation apparatus, where the apparatus includes:
the acquisition module is used for determining the buried depth of the underground water level according to the vertical drilling of the research area;
the analysis module is used for determining the corresponding underground water head height and the corresponding underground water head depth of the horizontal drilling hole at different hole depths according to the underground water level buried depth;
the processing module is used for acquiring the radius of the tunnel, the radius of the horizontal drilling hole and the unit length water inflow of the horizontal drilling hole;
the determining module is used for acquiring the permeability coefficient and the influence radius of the rock mass according to the radius of the horizontal drilling hole, the unit length water inflow of the horizontal drilling hole, the corresponding underground water head height and the corresponding depth of the horizontal drilling hole at different hole depths;
and the calculation module is used for acquiring the tunnel water inflow of the research area according to the tunnel radius, the hole depth of the horizontal drilling, the underground water head height, the permeability coefficient and the influence radius.
As an optional implementation manner of the present application, the tunnel water inrush calculation apparatus further includes:
the parameter acquisition module is used for acquiring the corresponding ground temperature of the horizontal drilling hole at different hole depths and the content of chemical components of underground water;
and the water source determining module is used for determining the source of the high-temperature hot water in the tunnel according to the water inflow amount of the tunnel, the corresponding ground temperatures of the horizontal drilling holes at different hole depths and the content of chemical components of underground water.
As an optional implementation manner of the present application, the processing module includes the following units:
a water amount monitoring data acquisition unit for acquiring water amount monitoring data; the water amount monitoring data comprises: the water inflow amount of the drilled hole, the water outlet length of the drilled hole and the corresponding ground temperature in different depths of the horizontal drilled hole;
and the unit length water inflow amount determining unit is used for determining the unit length water inflow amount of the horizontal drilling according to the water amount monitoring data.
As an optional implementation manner of the present application, the unit length water inflow amount determining unit is specifically configured to:
and determining the water inflow amount per unit length according to the ratio of the total water inflow amount of the horizontal drilling holes in different hole depths to the water outlet length of the corresponding horizontal drilling holes.
As an optional implementation manner of the present application, the determining module is specifically configured to:
according to the formula K-q (ln R-ln R)0) 2/H and the formula
Performing iterative calculation to obtain the permeability coefficient and the influence radius of the rock mass;
wherein K represents the permeability coefficient of the rock mass, q represents the water inflow per unit length of the horizontal borehole, R represents the influence radius, R0Is the radius of the horizontal drilling hole, and H is the underground water head height corresponding to different hole depths of the horizontal drilling hole.
As an optional implementation manner of the present application, the calculation module is specifically configured to:
according to formula QsCalculating the ratio of 2KHL/(ln R-ln R) to obtain the tunnel water inflow of the research area;
wherein Q issThe water inflow of the tunnel is shown as K, the permeability coefficient of the rock mass is shown as K, L is the hole depth of the horizontal drilling hole, H is the underground water head height corresponding to different hole depths of the horizontal drilling hole, R is the influence radius, and R is the tunnel radius.
As an optional implementation manner of the present application, the water source determining module is specifically configured to:
determining whether the water point is hot water or not according to the tunnel water inflow and the ground temperature corresponding to the horizontal drilling hole at different hole depths;
and if the water temperature of the water outlet point is higher than the preset temperature, determining that the water outlet point is hot water and determining whether the water outlet point is influenced by deep circulating water upwelling or not by combining the contents of chemical components of the underground water.
In a third aspect, an embodiment of the present application provides an electronic device, including: a memory for storing a computer program and a processor; the processor is configured to execute the method for calculating the tunnel water inflow according to the first aspect or any implementation manner of the first aspect when the computer program is called.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the method for calculating tunnel water inflow according to the first aspect or any implementation manner of the first aspect.
According to the tunnel water inflow calculation method provided by the embodiment of the application, the underground water head burial depth of a research area is determined by utilizing the vertical drilling, then the underground water head height and the depth of fall are obtained according to the underground water head burial depth of the area determined by the vertical deep hole, and then the permeability coefficient and the influence radius of a rock mass are calculated according to the horizontal drilling radius and the water amount monitoring data of the horizontal drilling, so that the problem that the underground water head height of the calculation parameter of a vertical drilling water pumping test is difficult to determine is solved. According to the analysis of the underground water dynamics method, the calculation of the tunnel water inflow is realized by utilizing the monitoring data of the horizontal drilling water inflow in consideration of the fact that only the tunnel radius is different from the horizontal drilling radius when the tunnel water inflow is calculated, and the problem that the calculation precision is influenced because a plurality of parameters are difficult to determine is solved, so that the result of calculating the tunnel water inflow by adopting the method is more accurate.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a flowchart of a method for calculating tunnel water inflow according to an embodiment of the present application;
fig. 2 is a flowchart of a method for calculating tunnel water inflow according to another embodiment of the present application;
fig. 3 is a schematic view of observation records of water temperature and water amount of tunnel water gushing according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a device for calculating tunnel water inflow according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a device for calculating tunnel water inflow according to another embodiment of the present application;
fig. 6 is an internal structure diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order that the above-mentioned objects, features and advantages of the present application may be more clearly understood, the solution of the present application will be further described below. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein; it is to be understood that the embodiments described in this specification are only some embodiments of the present application and not all embodiments.
Relational terms such as "first" and "second," and the like, may be used throughout the description and claims of the present application to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion. Further, in the description of the embodiments of the present application, the meaning of "a plurality" means two or more unless otherwise specified.
The overall inventive concept of the scheme is as follows: in order to determine the quantity and the source of the high-temperature hot water in the tunnel, the underground water level buried depth of a research area is determined by utilizing a vertical drilling hole, then the underground water head height and the depth of fall are obtained according to the underground water level buried depth of the area determined by the vertical deep hole, then the rock mass permeability coefficient and the influence radius are calculated according to the horizontal drilling hole radius and the water quantity monitoring data of the horizontal drilling hole, the calculation of the water inflow of the tunnel is realized by utilizing the water quantity monitoring data of the horizontal drilling hole according to the analysis of an underground water dynamic method, only the tunnel radius is different from the horizontal drilling hole radius when the water inflow of the tunnel is calculated, and finally the source of the high-temperature hot water in the tunnel is comprehensively analyzed according to the layered temperature measurement data of the horizontal hole, the layered sampling water chemistry test data and the water quantity monitoring data. By adopting the method, the problems that the tunnel water inflow calculation precision is influenced and the cold and hot water in the vertical deep hole are difficult to distinguish due to the fact that the parameters in the calculation process are difficult to determine can be solved.
The embodiment of the application provides a tunnel water inflow amount calculation method. Specifically, referring to fig. 1, the method for calculating the tunnel water inflow provided in the embodiment of the present application includes the following steps S11 to S15:
and S11, determining the underground water level burial depth according to the vertical drilling holes of the research area.
The underground water level burial depth refers to the burial depth of diving, namely the distance from the diving surface to the ground surface. The buried depth of the underground water level is mainly influenced by natural factors such as lithology, terrain, rainfall, vegetation and the like.
Specifically, the underground water level burial depth is revealed by utilizing vertical drill holes near and around the tunnel, and meanwhile, the underground water level burial depth of different position levels can be calculated according to terrain, hydraulic gradient and the like. Where hydraulic gradient, which refers to the ratio of head loss along the permeation pathway to the length of the permeation pathway, can be understood as the mechanical energy lost by the water flow through the permeation pathway per unit length to overcome frictional resistance.
It can be understood that the buried depth of the underground water level is fixed, and the hole depth of the vertical drilling hole can reveal the buried depth of the underground water level, so that the buried depth of the underground water level in a research area is determined by utilizing the vertical drilling hole, and a foundation is laid for calculating the water inflow amount.
And S12, determining the corresponding underground water head height and the corresponding underground water head depth of the horizontal drilling hole at different hole depths according to the underground water level burial depth.
The height of the underground water head refers to the height of the water level in the measuring pipe under the action of the pressure of underground water relative to a selected reference surface.
The water level drop is the value of the drop in water level when pumping water. The underground water level before pumping water is called as 'still water level', the underground water level reduced during pumping water is called as 'dynamic water level', and the water level depth is equal to the difference between the still water level and the dynamic water level. In the embodiment, the depth reduction is the distance that the underground water level is reduced to the vicinity of the tunnel body by considering the water drainage in the hole during the construction process.
Illustratively, the head heights of the horizontal holes from the hole bodies 478.6m, 964.7m, 1132m, 1249.8m, 1385.57m and 1436.07m are respectively 100m, 300m, 380m, 400m, 500m and 600m according to the buried depth of the underground water level, and the corresponding depths of the horizontal holes are respectively 94m, 295m, 374m, 394m, 494m and 594m according to the buried depth of the underground water level.
And S13, acquiring the radius of the tunnel, the radius of the horizontal drilling hole and the water inflow per unit length of the horizontal drilling hole.
Specifically, by adopting a vertical deep hole exploration technology and a horizontal deep hole exploration technology, engineering parameters in the drilling process can be monitored in real time, and parameters such as temperature, water pressure and harmful gas in a hole can be acquired in real time to provide data support for tunneling construction.
In the embodiment, the radius of the horizontal borehole is measured to be 0.045 m in the exploration process by using the horizontal deep hole exploration technology.
In one embodiment, the step S13 of obtaining the tunnel radius, the horizontal bore radius and the water inflow per unit length of the horizontal bore comprises the steps 1 and 2:
Specifically, the water inflow of the drilled hole is obtained according to the monitoring of water inflow of an orifice in the horizontal hole drilling process, and the water outlet length and the ground temperature of the drilled hole are also obtained through monitoring.
And 2, determining the unit length water inflow of the horizontal drilling according to the water amount monitoring data.
Specifically, the water quantity in the horizontal hole drilling process is observed in real time, and the water inflow quantity per unit length is calculated by utilizing the water quantity observation record.
Illustratively, the drilling water inflow of the horizontal holes at distances of 478.6m, 964.7m, 1132m, 1249.8m, 1385.57m and 1436.07m from the hole body is 880m/d, 460m/d, 781m/d, 940m/d, 78m/d and 220m/d respectively.
In an embodiment, in step S132, the water inflow per unit length of the horizontal drilling hole is determined according to the water monitoring data, and the specific implementation manner is as follows:
and determining the water inflow amount per unit length according to the ratio of the total water inflow amount of the horizontal drilling holes in different hole depths to the water outlet length of the corresponding horizontal drilling holes.
It will be appreciated that the horizontal bore water exit length is not greater than the horizontal bore depth length, and therefore the water inflow per unit length can be calculated from the total water inflow of the horizontal bore at different bore depths divided by the horizontal bore water exit length.
Illustratively, the corresponding water inflow per unit length is 1.85m3/d.m、1.45m3/d.m、1.50m3/d.m、1.49m3/d.m、1.40m3/d.m、1.45m3/d.m。
S14, acquiring the permeability coefficient and the influence radius of the rock mass according to the radius of the horizontal drilling hole, the water inflow amount of the horizontal drilling hole in unit length, the corresponding underground water head height and the corresponding depth of the horizontal drilling hole at different hole depths.
In one embodiment, the specific implementation of step S14 is as follows:
according to the formula K-q (ln R-ln R)0) 2/H and the formula
Performing iterative calculation to obtain the permeability coefficient and the influence radius of the rock mass;
k represents the permeability coefficient of the rock mass, q represents the unit length water inflow of the horizontal drilling hole, R represents the influence radius, R0 is the radius of the horizontal drilling hole, and H is the underground water head height corresponding to different hole depths of the horizontal drilling hole.
Specifically, the permeability coefficient is a parameter for characterizing the water permeability of an aquifer, and refers to the permeation speed of water in a medium when the hydraulic gradient is 1. The radius of influence is the radius of projection of the periphery of the dropping funnel on a plane. The size of the influence radius is related to factors such as the water permeability of the aquifer, the water pumping duration, the water level depth and the like.
Illustratively, according to the radius of the horizontal drilling hole, the water inflow amount per unit length of the horizontal drilling hole, the corresponding underground water head height and the corresponding depth of the horizontal drilling hole at different hole depths, a table for calculating the formation permeability coefficient and influencing the radius achievement by using the horizontal drilling hole can be obtained as shown in table 1.
TABLE 1
Specifically, in Table 1, horizontal hole depth, groundwater head height H, depth of descent S, influence radius R, horizontal hole radius R0The units of (A) are all meters; the water inflow of the drilled hole is represented by Q, and the unit of the water inflow is m/d; drilling a single long water quantity, i.e. the water inflow per unit length of the borehole, in m3D.m; the permeability coefficient is expressed by K and is expressed in m/d.
S15, acquiring the tunnel water inflow of the research area according to the tunnel radius, the hole depth of the horizontal drilling, the underground water head height, the permeability coefficient and the influence radius.
In one embodiment, the specific implementation of step S15 is as follows:
according to formula QsCalculating the ratio of 2KHL/(ln R-ln R) to obtain the tunnel water inflow of the research area;
wherein Q issThe water inflow of the tunnel is shown as K, the permeability coefficient of the rock mass is shown as K, L is the hole depth of the horizontal drilling hole, H is the underground water head height corresponding to different hole depths of the horizontal drilling hole, R is the influence radius, and R is the tunnel radius.
Specifically, as the tunnel and the horizontal hole are both horizontal drainage channels, the hydrogeological conditions, the underground water level burial depth, the permeability coefficient, the depth reduction and the influence radius are basically consistent, wherein only the radius of the horizontal drilling hole is different from that of the tunnel, so that the radius difference between the horizontal drilling hole and the tunnel can be considered according to the underground hydrodynamics method, the observed water inflow of the horizontal hole and the calculated water inflow of unit length are applied, and a formula Q is appliedsThe tunnel water inflow of the study area is calculated as 2KHL/(ln R-ln R).
Illustratively, according to the hole depth and the underground water head height of the horizontal drilling hole, the permeability coefficient and the influence radius of the table 1 are combined, and the radius of the tunnel obtained by measurement is 7m, the water yield result table of the tunnel body of the tunnel shown in the table 2 can be obtained.
TABLE 2
According to the tunnel water inflow calculation method provided by the embodiment of the application, the underground water level burial depth of a research area is determined by utilizing the vertical drilling, then the underground water head height and the depth of fall are obtained according to the underground water level burial depth of the area determined by the vertical deep hole, and then the rock mass permeability coefficient and the influence radius are calculated according to the horizontal drilling radius and the water quantity monitoring data of the horizontal drilling, so that the problem that the underground water head height of the calculation parameter of the vertical drilling water pumping test is difficult to determine is solved. According to the analysis of the underground water dynamics method, the calculation of the tunnel water inflow is realized by utilizing the monitoring data of the horizontal drilling water inflow in consideration of the fact that only the tunnel radius is different from the horizontal drilling radius when the tunnel water inflow is calculated, and the problem that the calculation accuracy is influenced because a plurality of parameters are difficult to determine is solved, so that the calculation result is more accurate when the tunnel water inflow is calculated by adopting the method.
In an embodiment, referring to fig. 2, on the basis of the embodiment shown in fig. 1, the method for calculating the tunnel water inflow provided by the embodiment of the present application further includes the following steps S16 and S17:
and S16, acquiring the corresponding ground temperature and the content of the chemical components of the underground water of the horizontal drilling holes at different hole depths.
Specifically, the ground temperature corresponding to the horizontal drilling holes at different hole depths is obtained by using a layered temperature measurement method. Illustratively, referring to fig. 3, the observation records of the water temperature and water quantity of the lunar tunnel CSDXZ-1 are taken as an example, and the groundwater temperatures at different distances from the tunnel body are obtained. The horizontal axis of fig. 3 represents the hole depth of the horizontal hole, the data on the left side of the vertical axis represents the groundwater temperature corresponding to different hole depths, and the data on the right side of the vertical axis represents the water inflow amount corresponding to different hole depths.
Wherein the chemical composition of the underground water mainly comprises the mineralization degree of the underground water. The degree of mineralization of groundwater is an inherent characteristic of formation water and is the sum of the contents of various mineral elements, the size of which is related to the formation reservoir environment and the source of rock debris particle sediments, and the common element is Ca2+、Mg2+、Na+、K+、HCO3-、Cl-I.e. the amount of inorganic salts in the formation water. Generally expressed in terms of the total amount of various salts contained in 1L of water, in mg/L or g/L, and also approximately expressed in parts per thousand (thousandth).
Illustratively, taking the horizontal hole hierarchical sampling result of the Laue tunnel as an example, the sampling results shown in Table 3 are obtained.
TABLE 3
S17, determining the source of the high-temperature hot water in the tunnel according to the water inflow amount of the tunnel, the corresponding ground temperature of the horizontal drilling holes at different hole depths and the content of chemical components of underground water.
Specifically, according to historical data analysis, the source of effluent in the hole is primarily divided into three causes, namely shallow circulating water with shallow buried depth and influenced by surface precipitation and infiltration; the other is high-temperature hot water affected by deep circulating water upwelling; still another is a mixture of the above two types.
The shallow groundwater is an aquifer within 60m below the surface of the earth. The temperature of the shallow circulating water is generally low. The deep underground water storage layer is about 1 kilometer below the ground surface, and the water storage amount of the deep underground water storage layer is much larger than the total water storage amount of the ground surface rivers and lakes. The deep water layer can be divided into: medium temperature hot water at 40-60 deg.c, high temperature hot water at 60-100 deg.c and overheat water at over 100 deg.c. The density of underground hot water is low due to high temperature, and deep high-temperature hot water is easy to break and rise due to self buoyancy drive.
In one embodiment, the specific implementation of step S17 may include steps a and b:
step a, determining whether a water outlet point is hot water or not according to the water inflow amount of the tunnel and the corresponding ground temperature of the horizontal drilling hole at different hole depths.
Specifically, the ground temperature of the horizontal drilling hole is monitored in a layered mode, and the hot water temperature is obtained while the hot water outlet position and the water inflow amount of the drilling hole are obtained.
Illustratively, referring to FIG. 3, FIG. 3 shows the result of the last layered temperature measurement, where the last temperature of the hole bottom reached 45 ℃. In continuous observation, the water yield of the horizontal hole is found to be large at the hole depths of 478.6m, 964.7m, 1132m, 1249.8m and 1436.07m respectively, and the hole opening monitoring water yield is suddenly increased to be a concentrated water yield point.
And b, if the water temperature of the water outlet point is higher than the preset temperature, determining that the water outlet point is hot water and determining whether the water outlet point is influenced by deep circulating water upwelling or not by combining the contents of chemical components of the underground water.
Specifically, the groundwater is subjected to the influence of the heat energy inside the earth under certain geological conditions to form groundwater with different temperatures. The underground water with the temperature higher than the average temperature of the local year is generally called hot water, and China currently adopts 20 ℃ as the temperature limit of cold water and hot water. Therefore, the preset temperature in this embodiment may be 20 ℃, and in practical engineering applications, other suitable values may also be selected, which is not limited herein. If the water temperature at the water outlet point is 85 ℃, the water outlet point can be preliminarily determined to be hot water.
Furthermore, the actual tunnel water inrush analysis needs to obtain a more accurate result, and can be analyzed by integrating two factors of the water temperature and the tunnel water inrush.
Illustratively, the water yield sharply increases to 880m at a hole depth of 476.888m3However, the water temperature is reduced, and according to the analysis of the water quantity monitoring data, the water yield is increased, and the water temperature is reduced, which indicates that the water yield point is shallow circulating cold water. When the drilling depth is 831.9m and 964.7m, the temperature is increased to 41 ℃, the temperature is increased by about 6 ℃, and the water amount is also increased to 460m3And d, analyzing according to the water quantity monitoring data, wherein the water quantity is increased, and the water temperature is obviously increased, which indicates that the water outlet point is influenced by the water gushing of the deep circulating water. At 1385m and 1436m there are new water outlet points with water quantity of 78m respectively3D and 220m3D, the water temperature at 1385m is not changed greatly, and the analysis according to the water quantity monitoring data shows that the water quantity is increased and the water temperature is not changed greatly, which indicates that the water outlet point is influenced by the mixing of shallow cold circulating water and deep circulating water; and the temperature at 1436m is increased quickly, and the water outlet point is considered to be influenced by the water outlet point of high-temperature hot water gushing from the deep part, and according to the analysis of water quantity monitoring data, the water quantity is increased, the water temperature change is large, and the water outlet point is influenced by the mixing of shallow cold circulating water and deep circulating water, but is influenced by deep circulating water greatly.
In practical engineering applications, taking fig. 3 as an example, when the drilling depth is 831.9m, because the water inflow amount at the last water outlet point is larger, in order to facilitate subsequent drilling progress, 95 casing pipes can be used for water shutoff, and similarly, 75 casing pipes can be used for water shutoff when the drilling depth is 1260.9 m.
Further, the complexity of the high temperature hot water source can be fully analyzed by water temperature, water volume monitoring, and chemical component content by stratified sampling.
For example, taking the horizontal hole hierarchical sampling result of the Rayleigh tunnel as an example, referring to Table 3, the hot water chemistry characteristics, namely HCO, are shown at the positions 1262m and 1381m away from the tunnel body3-Cl-Na and HCO3-Na is used as the main component, and the degree of mineralization is 1758mg/L and 621.5mg/L respectively. Specifically, at the position where the ground temperature is 67.88 ℃ in the depth of a horizontal hole 1262m, the salinity of underground water is 1758mg/L, the Cl & lt- & gt ion content is 164mg/L, the underground water is mainly formed by mixing shallow circulating cold water and hot water, and the proportion of deep circulating water is larger; and the temperature at 1381m is reduced, the mineralization degree and the Cl < - > content are reduced, but the water is still different from the common underground water in a research area, and the water is further judged to be formed by mixing shallow circulating cold water and deep circulating hot water, wherein the proportion of the shallow water is larger.
The tunnel water inflow calculation method provided by the embodiment utilizes horizontal hole layered temperature measurement and continuous water amount monitoring to acquire temperature characteristics and water amount characteristics of different depths, preliminarily analyzes whether a water outlet point is hot water or cold water, if the water outlet point and the water temperature are higher than preset temperature, preliminarily judges whether the water outlet point is influenced by the hot water, overcomes the defect that cold water and hot water in a vertical deep hole are difficult to distinguish, and determines whether the water outlet point is influenced by deep circulating water upwelling or not by combining the content of chemical components in underground water, and the tunnel water inflow calculation method corresponds to a water amount and water temperature monitoring result.
The embodiment of the application provides a tunnel water inflow amount calculation device, which is used for executing any one of the tunnel water inflow amount calculation methods provided by the embodiment and has the corresponding beneficial effects of the tunnel water inflow amount calculation method.
Fig. 4 is a schematic structural diagram of a tunnel water inflow calculation apparatus according to an embodiment of the present application, and as shown in fig. 4, the tunnel water inflow calculation apparatus 400 includes: an acquisition module 410, an analysis module 420, a processing module 430, a determination module 440, and a calculation module 450.
An acquisition module 410 for determining the groundwater level burial depth according to the vertical borehole of the research area;
the analysis module 420 is used for determining the corresponding underground water head height and the corresponding underground water head depth of the horizontal drilling hole at different hole depths according to the underground water level burial depth;
the processing module 430 is used for acquiring the radius of the tunnel, the radius of the horizontal drilling hole and the water inflow amount of the horizontal drilling hole in unit length;
the determining module 440 is used for acquiring the permeability coefficient and the influence radius of the rock mass according to the radius of the horizontal drilling hole, the unit length water inflow of the horizontal drilling hole, the corresponding underground water head height and the corresponding underground water head depth of the horizontal drilling hole at different hole depths;
and the calculation module 450 is used for acquiring the tunnel water inflow of the research area according to the tunnel radius, the hole depth of the horizontal drilling, the underground water head height, the permeability coefficient and the influence radius.
As an alternative embodiment of the present application, referring to fig. 5, the tunnel water inrush calculation apparatus 400 further includes:
the parameter acquisition module 460 is used for acquiring the corresponding ground temperature and the content of chemical components of underground water of the horizontal drilling at different hole depths;
and the water source determining module 470 is used for determining the source of the high-temperature hot water in the tunnel according to the water inflow amount of the tunnel, the corresponding ground temperatures of the horizontal drilling holes at different hole depths and the content of chemical components of underground water.
As an optional implementation manner of the present application, the processing module 430 includes the following units:
a water amount monitoring data acquisition unit for acquiring water amount monitoring data; the water amount monitoring data comprises: the water inflow amount of the drilled hole, the water outlet length of the drilled hole and the corresponding ground temperature in different depths of the horizontal drilled hole;
and the unit length water inflow amount determining unit is used for determining the unit length water inflow amount of the horizontal drilling according to the water amount monitoring data.
As an optional implementation manner of the present application, the unit length water inflow amount determining unit is specifically configured to:
and determining the water inflow amount per unit length according to the ratio of the total water inflow amount of the horizontal drilling holes in different hole depths to the water outlet length of the corresponding horizontal drilling holes.
As an optional implementation manner of the present application, the determining module 440 is specifically configured to:
according to the formula K-q (ln R-ln R)0) 2/H and the formula
Performing iterative calculation to obtain the permeability coefficient and the influence radius of the rock mass;
wherein K represents the permeability coefficient of the rock mass, q represents the water inflow per unit length of the horizontal borehole, R represents the influence radius, R0Is the radius of the horizontal drilling hole, and H is the underground water head height corresponding to different hole depths of the horizontal drilling hole.
As an optional implementation manner of the present application, the calculating module 450 is specifically configured to:
according to formula QsCalculating the ratio of 2KHL/(ln R-ln R) to obtain the tunnel water inflow of the research area;
wherein Q issThe water inflow of the tunnel is shown as K, the permeability coefficient of the rock mass is shown as K, L is the hole depth of the horizontal drilling hole, H is the underground water head height corresponding to different hole depths of the horizontal drilling hole, R is the influence radius, and R is the tunnel radius.
As an optional implementation manner of the present application, the water source determining module 470 is specifically configured to:
determining whether the water point is hot water or not according to the tunnel water inflow and the ground temperature corresponding to the horizontal drilling hole at different hole depths;
and if the water temperature of the water outlet point is higher than the preset temperature, determining that the water outlet point is hot water and determining whether the water outlet point is influenced by deep circulating water upwelling or not by combining the contents of chemical components of the underground water.
The specific definition of the tunnel water inflow calculation device can be referred to the definition of the tunnel water inflow calculation method in the foregoing, and is not described in detail herein. All or part of the modules in the tunnel water inflow calculation device can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent of a processor in the electronic device, or can be stored in a memory in the electronic device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, an electronic device is provided, the internal structure of which may be as shown in FIG. 6. The electronic device comprises a processor, a memory and a communication interface which are connected through a system bus. Wherein the processor of the electronic device is configured to provide computing and control capabilities. The memory of the electronic equipment comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the electronic device is used for carrying out wired or wireless communication with an external electronic device, and the wireless communication can be realized through WiFi, an operator network, Near Field Communication (NFC) or other technologies. The computer program is executed by a processor to implement a tunnel water inflow calculation method.
Those skilled in the art will appreciate that the configuration shown in fig. 6 is a block diagram of only a portion of the configuration associated with the present application, and does not constitute a limitation on the electronic device to which the present application is applied, and a particular electronic device may include more or less components than those shown in the drawings, or may combine certain components, or have a different arrangement of components.
In one embodiment, the tunnel water inflow calculation apparatus provided in the present application may be implemented in the form of a computer program, and the computer program may be executed in an electronic device as shown in fig. 6. The memory of the electronic device may store various program modules of the tunnel water inflow calculation apparatus constituting the electronic device, such as the obtaining module 410, the analyzing module 420, the processing module 430, the determining module 440, and the calculating module 450 shown in fig. 4. The computer program formed by the program modules enables the processor to execute the steps of the tunnel water inflow calculation method of the electronic equipment of the embodiments of the present application described in the present specification.
For example, the electronic device shown in fig. 6 may execute step S11 through the obtaining module 410 in the tunnel water inflow calculation apparatus of the electronic device shown in fig. 4. The electronic device may perform step S12 through the analysis module 420. The electronic device may perform step S13 through the processing module 430. The electronic device may perform step S14 through the determination module 440. The electronic device may perform step S15 through the calculation module 450.
In an embodiment, a computer-readable storage medium is also provided, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the embodiments provided herein may include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM is available in many forms, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), and the like.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for calculating tunnel water inflow is characterized by comprising the following steps:
determining the buried depth of the underground water level according to the vertical drilling of the research area;
determining the corresponding underground water head height and the corresponding underground water head depth of the horizontal drilling hole at different hole depths according to the underground water level burial depth;
acquiring the radius of a tunnel, the radius of a horizontal drilling hole and the unit length water inflow of the horizontal drilling hole;
acquiring the permeability coefficient and the influence radius of a rock mass according to the radius of a horizontal drilling hole, the unit length water inflow of the horizontal drilling hole, the corresponding underground water head heights and the depths of the horizontal drilling hole at different hole depths;
and acquiring the tunnel water inflow of the research area according to the tunnel radius, the hole depth of the horizontal drilling, the underground water head height, the permeability coefficient and the influence radius.
2. The method of claim 1, further comprising:
acquiring the corresponding ground temperature of the horizontal drilling hole at different hole depths and the content of chemical components of underground water;
and determining the source of the high-temperature hot water of the tunnel according to the water inflow of the tunnel, the corresponding ground temperatures of the horizontal drilling holes at different hole depths and the content of chemical components of underground water.
3. The method of claim 1, wherein the obtaining of the tunnel radius, the horizontal borehole radius, and the water influx per unit length of the horizontal borehole comprises:
acquiring water quantity monitoring data; the water amount monitoring data comprises: the water inflow amount of the drilled hole, the water outlet length of the drilled hole and the corresponding ground temperature in different depths of the horizontal drilled hole;
and determining the unit length water inflow of the horizontal drilling according to the water amount monitoring data.
4. The method of claim 3, wherein said determining water influx per unit length for said horizontal borehole from said water monitoring data comprises:
and determining the water inflow amount per unit length according to the ratio of the total water inflow amount of the horizontal drilling holes in different hole depths to the water outlet length of the corresponding horizontal drilling holes.
5. The method of claim 1, wherein the obtaining of permeability coefficient and influence radius of the rock mass according to the radius of the horizontal borehole, the water inflow per unit length of the horizontal borehole, the corresponding groundwater head height and the depth of the horizontal borehole at different hole depths comprises:
according to the formula K-q (ln R-ln R)0) 2/H and the formula
Performing iterative calculation to obtain the permeability coefficient and the influence radius of the rock mass;
wherein K represents the permeability coefficient of the rock mass, q represents the water inflow per unit length of the horizontal borehole, R represents the influence radius, R0Is the radius of the horizontal drilling hole, and H is the underground water head height corresponding to different hole depths of the horizontal drilling hole.
6. The method of claim 1, wherein the obtaining tunnel water inflow of the research area from a tunnel radius, a hole depth of a horizontal borehole, the ground water head height, the permeability coefficient, and the influence radius comprises:
according to formula QsCalculating the ratio of 2KHL/(ln R-ln R) to obtain the tunnel water inflow of the research area;
wherein Q issThe water inflow of the tunnel is shown as K, the permeability coefficient of the rock mass is shown as K, L is the hole depth of the horizontal drilling hole, H is the underground water head height corresponding to different hole depths of the horizontal drilling hole, R is the influence radius, and R is the tunnel radius.
7. The method of claim 2, wherein determining the source of the tunnel high-temperature hot water according to the tunnel water inflow, the corresponding ground temperature of the horizontal drilling at different hole depths and the content of chemical components of underground water comprises:
determining whether the water point is hot water or not according to the tunnel water inflow and the ground temperature corresponding to the horizontal drilling hole at different hole depths;
and if the water temperature of the water outlet point is higher than the preset temperature, determining that the water outlet point is hot water and determining whether the water outlet point is influenced by deep circulating water upwelling or not by combining the contents of chemical components of the underground water.
8. A tunnel water inflow calculation device is characterized by comprising:
the acquisition module is used for determining the buried depth of the underground water level according to the vertical drilling of the research area;
the analysis module is used for determining the corresponding underground water head height and the corresponding underground water head depth of the horizontal drilling hole at different hole depths according to the underground water level buried depth;
the processing module is used for acquiring the radius of the tunnel, the radius of the horizontal drilling hole and the unit length water inflow of the horizontal drilling hole;
the determining module is used for acquiring the permeability coefficient and the influence radius of the rock mass according to the radius of the horizontal drilling hole, the unit length water inflow of the horizontal drilling hole, the corresponding underground water head height and the corresponding depth of the horizontal drilling hole at different hole depths;
and the calculation module is used for acquiring the tunnel water inflow of the research area according to the tunnel radius, the hole depth of the horizontal drilling, the underground water head height, the permeability coefficient and the influence radius.
9. A computer-readable storage medium on which a computer program is stored, the computer program, when being executed by a processor, implementing the tunnel water inflow calculation method according to any one of claims 1 to 7.
10. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the method for calculating tunnel water inflow according to any one of claims 1 to 7 when executing the computer program.
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| CN114708242A (en) * | 2022-04-14 | 2022-07-05 | 自然资源部国土整治中心 | Method and device for breaking impervious layer of saline-alkali soil to realize salt and alkali discharge |
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