CN110489909A - A kind of projectional technique of geothermal temperature distributing rule - Google Patents
A kind of projectional technique of geothermal temperature distributing rule Download PDFInfo
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Abstract
The invention discloses a kind of projectional techniques of geothermal temperature distributing rule, comprising the following steps: the atmospheric temperature information for several years running in the target area of inquiry, and corresponding atmospheric temperature information database is established according to the geographical coordinate of the target area；By pretreatment, the annual temperature on average of the target area is obtained, and generates corresponding annual temperature on average database；According to the depth of the annual temperature on average and ground to be calculated, the calculation formula for calculating the ground temperature of target depth is established, the ground temperature of the target depth is calculated by calculation formula；The predictor formula are as follows: TH=T0+kH.According to the method for the present invention, the annual temperature on average in conjunction with different regions calculates that different regions shallow layer geothermal energy in the regularity of distribution of the underground space, develops shallow layer geothermal energy for planning of science activities and established theoretical basis.
Description
Technical field
The present invention relates to the development and utilization of shallow layer geothermal energy, and in particular to a kind of reckoning of geothermal temperature distributing rule
Method.
Background technique
Studies have shown that shallow layer geothermal energy is mainly derived from conduction and the solar radiation of the spontaneous thermal energy of earth interior.It is meteorological
Scholars obtain the changing rule of atmosphere temperature field according to long-term observation and research, in atmosphere convection layer, often increase 100 meters
Temperature declines 0.6 DEG C, and earth year-round average temperature is 15 DEG C, and stable for extended periods of time, and the year-round average temperature of each department is also very steady
It is fixed.Geologists obtain geothermal gradient, i.e. underground ground temperature according to studying for a long period of time, increase as depth increases, and put down
Equal depth is every to increase by 100 meters of 3 DEG C of temperature increases.But under same depth conditions, different regions underground ground temperature difference compared with
Greatly, changing rule it is difficult to predict.Thermodynamic study shows that nature does not have any material that can completely cut off heat, atmosphere temperature field
It must be a unified temperature field with underground temperature field, how to be combined together the two, according to established relative abundance
Atmospheric temperature data, to calculate underground ground temperature changing regularity, the development and utilization to shallow layer geothermal energy is instructed have very heavy
The realistic meaning wanted.
Summary of the invention
For deficiency in above-mentioned background technique, the purpose of the present invention is to provide a kind of geothermal temperature distributing rules
Projectional technique.
In order to achieve the goal above, using following technical scheme:
A kind of projectional technique of geothermal temperature distributing rule, comprising the following steps:
(1) the atmospheric temperature information for several years running in the target area inquired, and according to the geography of the target area
Coordinate establishes corresponding atmospheric temperature information database；
(2) by pretreatment, the annual temperature on average of the target area is obtained, and generates corresponding annual temperature on average
Database；
(3) according to the depth of the annual temperature on average and ground to be calculated, the ground temperature for calculating target depth is established
Calculation formula, the ground temperature of the target depth is calculated by calculation formula；
The prediction equation are as follows: TH=T0+kH；
Wherein, THFor the ground temperature of the target depth, DEG C；T0For the annual temperature on average of the target area, DEG C；k
For geothermal gradient, (2.5-4) DEG C/100m；H is the ground depth to be calculated, m.
Further, the geothermal gradient k is 3 DEG C/100m.
Further, the projectional technique further includes ground geological condition investigation step, to rock in the target area
Soil layer geological condition is investigated, and obtains hydrogeologic data and ground thermal property parameter etc., the geothermal gradient k is according to institute
The information factor for stating rock-soil layer fluctuates.
Further, according to the ground temperature for the different depth being calculated, the ground temperature of the target area is drawn
Distribution map provides reference frame not excavate the utilization of the shallow layer geothermal energy under the conditions of the well of ground source.
Compared with prior art, the invention has the advantages that:
The average annual temperature of the earth is 15 DEG C, and since having meteorological record, this temperature is relatively stable always.It is strong by solar radiation
Differentia influence is spent, the average annual temperature in various regions has larger difference, but is also metastable.According to the method for the present invention, in conjunction with differently
The annual temperature on average in area calculates that different regions shallow layer geothermal energy in the regularity of distribution of the underground space, develops shallow-layer for planning of science activities
Geothermal energy has established theoretical basis.
1, underground shallow layer ground temperature is intensity of solar radiation and the coefficient result of geothermal gradient；
2、T0It is the major parameter for influencing different regions same depth underground ground temperature difference；
3, the underground ground temperature of areal, same depth is essentially identical；
4, ground temperature in underground is directly proportional with depth, and different regions geothermal gradient has different, generally 2.5-4
DEG C/100m, 3 DEG C/100m of average out to.
Specific embodiment
Below in conjunction with specific embodiment, detailed description of the preferred embodiments.It should be understood that this
Locate described specific embodiment to be merely to illustrate and explain the present invention, be not intended to restrict the invention.
A kind of projectional technique of geothermal temperature distributing rule, comprising the following steps:
(1) the atmospheric temperature information for several years running in the target area inquired, and according to the geography of the target area
Coordinate establishes corresponding atmospheric temperature information database；
(2) by pretreatment, the annual temperature on average of the target area is obtained, and generates corresponding annual temperature on average
Database；
(3) according to the depth of the annual temperature on average and ground to be calculated, the ground temperature for calculating target depth is established
Calculation formula, the ground temperature of the target depth is calculated by calculation formula；
The prediction equation are as follows: TH=T0+kH；
Wherein, THFor the ground temperature of the target depth, DEG C；T0For the annual temperature on average of the target area, DEG C；k
For geothermal gradient, (2.5-4) DEG C/100m；H is the ground depth to be calculated, m.
Further, the geothermal gradient k is 3 DEG C/100m.
Further, the projectional technique further includes ground geological condition investigation step, to rock in the target area
Native geological condition is investigated, and obtains hydrogeologic data and ground thermal property parameter etc., the geothermal gradient k is according to
The information factor of rock-soil layer fluctuates.
Further, according to the ground temperature for the different depth being calculated, the ground temperature of the target area is drawn
Distribution map provides reference frame not excavate the utilization of the shallow layer geothermal energy under the conditions of the well of ground source.
Embodiment 1
Calculate separately Hefei district underground 100m, 200m, 300m ground temperature.
According to meteorological data it is found that Hefei average temperature of the whole year is 16 DEG C, i.e. T0=16 DEG C, then:
T100=16+3/100 × 100=19 DEG C；
T200=16+3/100 × 200=22 DEG C；
T300=16+3/100 × 300=25 DEG C.
Embodiment 2
Calculate separately Beijing area underground 100m, 200m, 300m ground temperature.
According to meteorological data it is found that Beijing average temperature of the whole year be 12 DEG C, i.e., T0=16 DEG C, then:
T100=12+3/100 × 100=15 DEG C；
T200=12+3/100 × 200=18 DEG C；
T300=12+3/100 × 300=21 DEG C.
Embodiment 3
Calculate separately Border in Harbin Area underground 100m, 200m, 300m ground temperature.
According to meteorological data it is found that Harbin average temperature of the whole year be 6 DEG C, i.e., T0=5 DEG C, then:
T100=5+3/100 × 100=8 DEG C；
T200=5+3/100 × 200=11 DEG C；
T300=5+3/100 × 300=14 DEG C.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection scope by appended claims and its
Equivalent defines.
Claims (4)
1. a kind of projectional technique of geothermal temperature distributing rule, which comprises the following steps:
(1) the atmospheric temperature information for several years running in the target area inquired, and according to the geographical coordinate of the target area
Establish corresponding atmospheric temperature information database；
(2) by pretreatment, the annual temperature on average of the target area is obtained, and generates corresponding annual temperature on average data
Library；
(3) according to the depth of the annual temperature on average and ground to be calculated, the meter for calculating the ground temperature of target depth is established
Formula is calculated, the ground temperature of the target depth is calculated by calculation formula；
The prediction equation are as follows: TH=T0+kH；
Wherein, THFor the ground temperature of the target depth, DEG C；T0For the annual temperature on average of the target area, DEG C；K is ground
Hot warming rate, (2.5-4) DEG C/100m；H is the ground depth to be calculated, m.
2. a kind of projectional technique of geothermal temperature distributing rule according to claim 1, which is characterized in that describedly
Hot warming rate k is 3 DEG C/100m.
3. a kind of projectional technique of geothermal temperature distributing rule according to claim 1, which is characterized in that described to push away
Calculation method further includes ground geological condition investigation step, investigates in the target area ground geological condition, obtains
Hydrogeologic data and ground thermal property parameter etc., the geothermal gradient k are fluctuated according to the information factor of the ground.
4. a kind of projectional technique of geothermal temperature distributing rule according to claim 1, which is characterized in that according to meter
The ground temperature of obtained different depth draws the ground temperature profile of the target area, not excavate ground source well item
Utilizing for shallow layer geothermal energy under part provides reference frame.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10281896A (en) * | 1997-04-04 | 1998-10-23 | Oki Electric Ind Co Ltd | Method and apparatus for predicting underground temperature |
| CN101027480A (en) * | 2004-06-23 | 2007-08-29 | 特拉瓦特控股公司 | Method of developing and producing deep geothermal reservoirs |
| CN105719270A (en) * | 2014-09-24 | 2016-06-29 | 韩国地质资源研究院 | Method for analyzing 2-dimensional geothermal resource data using web-based 3-dimensional sectional view |
| CN109724275A (en) * | 2017-10-31 | 2019-05-07 | 埃沃尔技术股份有限公司 | Method and apparatus for recycling geothermal energy production well site |
-
2019
- 2019-08-27 CN CN201910794353.6A patent/CN110489909A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10281896A (en) * | 1997-04-04 | 1998-10-23 | Oki Electric Ind Co Ltd | Method and apparatus for predicting underground temperature |
| CN101027480A (en) * | 2004-06-23 | 2007-08-29 | 特拉瓦特控股公司 | Method of developing and producing deep geothermal reservoirs |
| CN105719270A (en) * | 2014-09-24 | 2016-06-29 | 韩国地质资源研究院 | Method for analyzing 2-dimensional geothermal resource data using web-based 3-dimensional sectional view |
| CN109724275A (en) * | 2017-10-31 | 2019-05-07 | 埃沃尔技术股份有限公司 | Method and apparatus for recycling geothermal energy production well site |
Non-Patent Citations (1)
| Title |
|---|
| 周训 等: "《地下水科学专论》", 31 December 2017 * |
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Application publication date: 20191122 |