CN108445535A - Find the method that famp is molten in thick cover region - Google Patents
Find the method that famp is molten in thick cover region Download PDFInfo
- Publication number
- CN108445535A CN108445535A CN201810795235.2A CN201810795235A CN108445535A CN 108445535 A CN108445535 A CN 108445535A CN 201810795235 A CN201810795235 A CN 201810795235A CN 108445535 A CN108445535 A CN 108445535A
- Authority
- CN
- China
- Prior art keywords
- karst
- location
- famp
- molten
- cover region
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000011161 development Methods 0.000 claims abstract description 11
- 238000007405 data analysis Methods 0.000 claims abstract description 5
- 230000004907 flux Effects 0.000 claims description 9
- 238000005553 drilling Methods 0.000 claims description 7
- 238000004458 analytical method Methods 0.000 claims description 4
- 101000666896 Homo sapiens V-type immunoglobulin domain-containing suppressor of T-cell activation Proteins 0.000 claims description 3
- 102100038282 V-type immunoglobulin domain-containing suppressor of T-cell activation Human genes 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- IJJVMEJXYNJXOJ-UHFFFAOYSA-N fluquinconazole Chemical compound C=1C=C(Cl)C=C(Cl)C=1N1C(=O)C2=CC(F)=CC=C2N=C1N1C=NC=N1 IJJVMEJXYNJXOJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 9
- 235000019738 Limestone Nutrition 0.000 abstract description 4
- 239000006028 limestone Substances 0.000 abstract description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000001028 reflection method Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- FPPNZSSZRUTDAP-UWFZAAFLSA-N carbenicillin Chemical class N([C@H]1[C@H]2SC([C@@H](N2C1=O)C(O)=O)(C)C)C(=O)C(C(O)=O)C1=CC=CC=C1 FPPNZSSZRUTDAP-UWFZAAFLSA-N 0.000 description 1
- 239000010430 carbonatite Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
- G01V1/30—Analysis
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The molten method of famp, includes the following steps in the thick cover region of searching that the present invention is to provide：Step 1：Three kinds will be divided into according to karsts developing area situation in area to be tested, it is respectively defined as karst and generally develops that location, karst relatively develop location, karst especially develops location, location, which is generally developed, in the karst arranges two surveys line, three surveys line are arranged in the karst relatively development location, are especially developed location in karst and are arranged four surveys line；Step 2：Focus is hammered, and uses floating-point seismic detector simultaneously, and earthquake reflected wave is observed using multi-fold observation system；Step 3：Data analysis is observed using earthquake reason software.It is abnormal different caused by different geophysical prospecting methods of the present invention between miscellaneous fill, cobble, limestone, carry out method combination application, it successfully reaches the purpose for looking for karst, improves the effect of economy and construction is simple, looks for karst to add effective geophysical prospecting method combination for the area of coverage.
Description
Technical field
The present invention relates to shallow earthquake rolling land ball geophysical prospecting technology fields, more particularly to it is molten to find famp in thick cover region
Method.
Background technology
The limestone and shale on upper Cambrian system Chang Mount group stratum are the principal lithologics to form underground karst, rift structure and wherein
Underground water long-term motion be induce karst principal element.Carbonatite（Limestone）Under the long term of underground water, constantly
Loss by dissolution gradually forms cavity near construction and crack or is filled by exotic, is i.e. the main process of Karst formation.
At present before Large Construction, need to carry out engineer geological prospecting to related land, and the karst in geology can shadow
Subsequent construction quality is rung, therefore before construction, it is necessary to find the karst in related land.
Invention content
The present invention, which provides, uses artificial excitation's focus, and making focus, nearby particle generates vibrations, and the seismic wave of formation is in underground
Propagation just generates reflection, correlation is found using the variation of back wave when encountering two kinds of different elastic fluid interfaces
Karst in soil, to solve the above problems.
In order to achieve the above objectives, the present invention, which provides, a kind of finding the method that famp is molten in thick cover region, wherein including
Following steps：
Step 1：It will drill in area to be tested, observe karsts developing area situation, karst density is less than 1/km2, drill karst
Rate is less than 2%, and location of the maximum spring flux no more than 5L/s is defined as karst and generally develops location, by karst density 1 ~ 5/
km2, drill rate of karstification 2 ~ 5%, and location of the maximum spring flux no more than 5 ~ 10L/s is defined as karst and relatively develops location, and karst is close
Degree is more than 5/km2, for drilling rate of karstification more than 5%, location of the maximum spring flux more than 10L/s is defined as karst especially developmentally
Section generally develops location in the karst and arranges two surveys line, three surveys line is arranged in the karst relatively development location, in karst
Four surveys line are arranged in especially development location；
Step 2：Focus is hammered, and uses floating-point seismic detector simultaneously, and earthquake reflected wave is observed using multi-fold observation system；
Step 3：Data analysis is observed using earthquake reason software.
Preferably, it is 5m that karst described in step 1, which generally develops location and karst compared with the survey line spacing in development location,
The survey line spacing that karst especially develops location is 3.3m.
Preferably, manually hammering focus using the sledgehammer of 10 ~ 11kg in step 2.
Preferably, using 60Hz wave detectors in step 2, sampling interval 0.5ms, frequency band 40-500Hz receive 24
Earthquake reflected wave, road spacing are 1m ~ 2m, offset distance 20m.
Preferably, managing software using VISTA earthquakes in step 3, observation data analysis flow is followed successively by：Calling is adopted
The observation earthquake reflected wave data file of collection, road balance, filtering, velocity analysis, dynamic correction, horizontal superposition, time and depth transfer, printing
As a result.
Compared with prior art, beneficial effects of the present invention are：
The molten method of famp in the thick cover region of searching that the present invention is to provide, between miscellaneous fill, cobble, limestone not
It is abnormal different caused by same geophysical prospecting method, method combination application is carried out, the purpose for looking for karst is successfully reached, is improved economical
With the effect of construction is simple, karst is looked for add effective geophysical prospecting method combination for the area of coverage.
Description of the drawings
The engineering geology diagrammatic cross-section that Fig. 1 is detected for the present invention.
In figure：Famp in 1- miscellaneous fills, 2- cobbles, 5- shale, 6- solution cavities, 8-.
Specific implementation method
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below to the specific embodiment party of the present invention
Formula is described in detail.
For karsts developing area situation in area, requirement and construction site actual conditions are administered in conjunction with Party A, it is peaceful to Benxi prestige
Street underground pipe gallery project construction area carries out physical prospecting preliminry basic research.By using reflection of shallow earthquakes wave method, point of solution cavity is investigated thoroughly
Cloth position and range.Specifically, 3 surveys line are arranged for karst relatively development location；Karst is especially developed, push up bottom span compared with
Distribution location is encrypted to 4 greatly and in groups, and for the general location of karsts developing area, 2 surveys line are arranged only for drilling control side,
Survey line spacing is generally 5m, and encrypted section spacing is 3.3m.This reflection of shallow earthquakes wave method reconnoitres point 7 construction sections, lays 19 altogether
Section totals 684 big guns（Hammer point）.
Above-mentioned karsts developing area location is broadly divided into three kinds：Karst generally develops location, karst relatively development location and karst is special
Location is not developed.Karst is generally developed location and is typically referred to：Karst density is less than 1/km2, drilling rate of karstification is less than 2%, earth's surface
And there are a small number of sinkholes, funnel and karst source in underground mostly based on solution crack, develops the multi-layered aquifer based on crack, it is maximum
Spring flux is not more than 5L/s；Karst relatively development location typically refers to：1 ~ 5/km of karst density2, drill rate of karstification 2 ~ 5%, earth's surface
There are small-scale solution cavity, more sinkhole, funnel, underground to develop crack shape underground river, based on crevice water, maximum spring flux is not
More than 5 ~ 10L/s；Karst is especially developed location and is typically referred to：Karst density is more than 5/km2, drilling rate of karstification is more than 5%, ground
Table has solution cavity, and sinkhole, funnel, depression is intensive, and there is underground river in underground, and based on pipeline water, maximum spring flux is more than 10L/s.
This engineering the drilling is shown in hole rate 88.9%, and drill rate of karstification 65.2%, thus it is speculated that meets karst and especially develops location.
Shallow layer earthquake reflection method parameter setting：This observation is using 3 times, 6 covering observation systems, 24 pounds of sledgehammer excitation hammerings
Focus receives and uses 60Hz wave detectors, offset distance 20m, road spacing 1m ~ 2m, sample rate 1024, sampling interval 0.5ms, frequency band
40-500Hz, 24 receive.Instrument uses GEOPEN series SE2404 types floating-point shallow layer seismograph Seismic Imaging and engineering detecting
Instrument.
It is explored using shallow layer earthquake reflection method, the variation characteristics such as intensity, phase, frequency, the spread speed of back wave is utilized,
When there are karst for underground（There is filling in dead zone）When, intensity, phase, frequency, the spread speed of back wave change.
In karst（Solution cavity）Diffraction phenomenon can occur for boundary seismic wave, so that back wave axis in the same direction is distorted（It is wrong
Disconnected, convex, recessed etc.）, or Seismic Wave Dynamics Characteristics is caused to mutate, and can determine Detection of Karst according to these mutation
（Solution cavity）Substantially horizontal arrangement.
Analysis on Results：This is constructed for 19 seismic reflectuon seismic noise sections, except individual interference are strong（Superficial weathering zone
Development, hypsography are larger, draw water and piling machine interferes）Outside location, each section can substantially reflect the larger rock in underground
It is molten（Solution cavity）Developmental state.
Now infer that the explanation of solution cavity profile anomaly is described below by taking K2+525 ~ K2+625 as an example：2 line of K2+525-K2+625 sections
Section：Away from 12.4~23.2m of K2+525 the easts（Width 23.2m）28.3~33.5m of depth；Away from K2+525 the easts 30.2~
47.3m（Width 17.1m）19.2~30.1m of depth；Away from 49~63.4m of K2+525 the easts（Width 20.1m）Depth 21.6~
26.3m；Away from 85.4~99.6m of K2+525 the easts（Width 14.2m）Occur at 22~29.8m of depth on back wave axis top in the same direction
Convex, lower part is recessed, energy variation（Amplitude reduces suddenly）Or the mixed and disorderly phenomenon of axis in the same direction.Speculate that these positions are karst cave.
If the normal depth of shot point to subsurface interface is h, big gun spacing（Hammer point spacing）For x, velocity of wave v, interface is inclined
Angle is φ, and the TWT of earthquake reflected wave is t0, then：
For single layer uniform dielectric horizontal interface t0=(4h2+x2)1/2/v；
For single layer uniform dielectric tilted interface t0=(4h2+x2±4xhsinφ)1/2/v；
For multilayer dielectricity, if vaFor its average speed, then in multilayer dielectricity interface level：t0=2H/va。
It is received with 24, unilateral shot（Hammering）, 6 coverings construct, hammer every time, shot point（Hammer point）With the row of reception
Row move forward simultaneously, this working path spacing is 1m, shooting distance 2m, and shooting distance calculation formula is as follows：
d=（S×N) ×Δx/2n
Wherein N is reception channel number
Δ x is spacing
N is degree of covering
S:{ unilateral shot:S=1}
It is { bilateral to blow out:S=2}
Data processing manages software using VISTA earthquakes.Its data processing main flow is：Calling back wave gathered data file →
Road balance → filtering → velocity analysis → dynamic correction → horizontal superposition → time and depth transfer → print processing result.
By data interpretation, karst has following off-note：Diffraction waveshape；Reflected energy relief regions；Back wave
Axis bad break, missing or zone of turbulence in the same direction, thus it is speculated that these positions are karst cave, and above-mentioned shallow earthquake wave divides stratum
Layer position it is substantially close with results of drilling, as shown in Figure 1, in figure geologic section mainly have miscellaneous fill 1, cobble 2, shale 5, solution cavity 6,
Middle famp 8,6 content of solution cavity is higher in 8 layers of middle famp.
Obviously, those skilled in the art can carry out invention spirit of the various modification and variations without departing from the present invention
And range, if these modifications and changes of the present invention is within the scope of the claims of the present invention and its equivalent technology, then
The present invention is also intended to including these modification and variations.
Claims (5)
1. a kind of finding the method that famp is molten in thick cover region, which is characterized in that include the following steps：
Step 1：It will drill in area to be tested, observe karsts developing area situation, karst density is less than 1/km2, drill karst
Rate is less than 2%, and location of the maximum spring flux no more than 5L/s is defined as karst and generally develops location, by karst density 1 ~ 5/
km2, drill rate of karstification 2 ~ 5%, and location of the maximum spring flux no more than 5 ~ 10L/s is defined as karst and relatively develops location, and karst is close
Degree is more than 5/km2, for drilling rate of karstification more than 5%, location of the maximum spring flux more than 10L/s is defined as karst especially developmentally
Section generally develops location in the karst and arranges two surveys line, three surveys line is arranged in the karst relatively development location, in karst
Four surveys line are arranged in especially development location；
Step 2：Focus is hammered, and uses floating-point seismic detector simultaneously, and earthquake reflected wave is observed using multi-fold observation system；
Step 3：Data analysis is observed using earthquake reason software.
2. as described in claim 1 find the method that famp is molten in thick cover region, which is characterized in that described in step 1
It is 5m that karst, which generally develops location and karst compared with the survey line spacing in development location, and the survey line spacing that karst especially develops location is
3.3m。
3. as described in claim 1 find the method that famp is molten in thick cover region, which is characterized in that used in step 2
The sledgehammer of 10 ~ 11kg manually hammers focus.
4. as claimed in claim 3 find the method that famp is molten in thick cover region, which is characterized in that used in step 2
60Hz wave detectors, sampling interval 0.5ms, frequency band 40-500Hz receive 24 earthquake reflected waves, and road spacing is 1m ~ 2m, offset
Away from for 20m.
5. as described in claim 1 find the method that famp is molten in thick cover region, which is characterized in that used in step 3
Software is managed in VISTA earthquakes, and observation data analysis flow is followed successively by：Call observation earthquake reflected wave data file, the road of acquisition
Balance, filtering, velocity analysis, dynamic correction, horizontal superposition, time and depth transfer, print result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810795235.2A CN108445535A (en) | 2018-07-19 | 2018-07-19 | Find the method that famp is molten in thick cover region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810795235.2A CN108445535A (en) | 2018-07-19 | 2018-07-19 | Find the method that famp is molten in thick cover region |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108445535A true CN108445535A (en) | 2018-08-24 |
Family
ID=63207040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810795235.2A Pending CN108445535A (en) | 2018-07-19 | 2018-07-19 | Find the method that famp is molten in thick cover region |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108445535A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006028501A3 (en) * | 2004-02-26 | 2006-07-27 | Saudi Arabian Oil Co | Prediction of shallow drilling hazards using seismic refraction data |
| CN101403797A (en) * | 2008-11-14 | 2009-04-08 | 北京市市政工程研究院 | Advanced geological prediction system and method for underground engineering construction |
| CN105911603A (en) * | 2016-05-04 | 2016-08-31 | 湖南科技大学 | Natural electric field based four-dimensional geophysical prospecting method |
-
2018
- 2018-07-19 CN CN201810795235.2A patent/CN108445535A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006028501A3 (en) * | 2004-02-26 | 2006-07-27 | Saudi Arabian Oil Co | Prediction of shallow drilling hazards using seismic refraction data |
| CN101403797A (en) * | 2008-11-14 | 2009-04-08 | 北京市市政工程研究院 | Advanced geological prediction system and method for underground engineering construction |
| CN105911603A (en) * | 2016-05-04 | 2016-08-31 | 湖南科技大学 | Natural electric field based four-dimensional geophysical prospecting method |
Non-Patent Citations (2)
| Title |
|---|
| 刘继东: "物探方法在河北滦县地面塌陷勘查中的应用研究", 《中国优秀硕士学位论文全文数据库 基础科学辑》 * |
| 铁道部第二勘测设计院: "《岩溶工程地质》", 31 August 1984, 中国铁道出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102866417A (en) | Device and method for seismic cross hole computed tomography (CT) detection and tomography of underground cave | |
| CN109613616A (en) | A kind of comprehensive three-dimensional probe method of shallow survey tunnel geology | |
| CN202837558U (en) | Underground karst cave earthquake cross-hole CT (computer tomography) detection and tomographic imaging device | |
| Al-Heety et al. | Application of MASW and ERT methods for geotechnical site characterization: A case study for roads construction and infrastructure assessment in Abu Dhabi, UAE | |
| Nian et al. | Determination of in-situ stress orientation and subsurface fracture analysis from image-core integration: an example from ultra-deep tight sandstone (BSJQK Formation) in the Kelasu Belt, Tarim Basin | |
| Lanzo et al. | The Aterno Valley strong-motion array: seismic characterization and determination of subsoil model | |
| Zhao et al. | Relationship between fractures, stress, strike-slip fault and reservoir productivity, China Shunbei oil field, Tarim Basin | |
| Liang et al. | Tectonic stress estimation from ultrasonic borehole image logs in a coal bed methane well, northeastern Qinshui Basin, China | |
| Chen et al. | Geophysical interpretation of a subsurface landslide in the Southern Qinshui Basin | |
| LONG et al. | Seismic geothermal resource exploration based on CPU/GPU collaborative parallel prestack time migration | |
| CN106772630A (en) | A kind of earth lead source transient electromagnetic axial detection method | |
| Shi et al. | Using 3D seismic exploration to detect ground fissure | |
| CN108445535A (en) | Find the method that famp is molten in thick cover region | |
| Cappetti et al. | A new deep exploration program and preliminary results of a 3D seismic survey in the Larderello-Travale geothermal field (Italy) | |
| Raines et al. | The application of passive seismic techniques to the detection of buried hollows | |
| Yao et al. | Using seismic methods to detect connectivity of fracture networks controlled by strike-slip faults in ultra-deep carbonate reservoirs: A case study in northern tarim basin, China | |
| Pugin et al. | Update on recent observations in multi-component seismic reflection profiling | |
| Pires et al. | Application of Refraction Seismic On the Vulnerability of Underground Aquifers | |
| Aziz et al. | Karst cavity detection in carbonate rocks by integration of high resolution geophysical methods | |
| Fadhli et al. | Ground Surface Quality Assessment Using P-wave Velocity from 2-D Seismic Refraction Method | |
| Gritto | Subsurface void detection using seismic tomographic imaging | |
| CN110941029B (en) | Speed modeling method related to geological capping | |
| Martin et al. | High resolution seismic reflection for hydrogeology-where is the value? | |
| Ajayi et al. | Weathered Layer Characterization of Ohaji-Egbema and Environs, South Eastern Nigeria, Using Up hole Refraction Surveys. | |
| Wang et al. | On application of seismic reflection method in investigation of urban underground active faults: A case study in Jiangdong New District of Haikou in Hainan Province, China |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180824 |
|
| RJ01 | Rejection of invention patent application after publication |