CN109884732A - Method for determining hidden structure in sedimentation basin - Google Patents
Method for determining hidden structure in sedimentation basin Download PDFInfo
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- CN109884732A CN109884732A CN201910187176.5A CN201910187176A CN109884732A CN 109884732 A CN109884732 A CN 109884732A CN 201910187176 A CN201910187176 A CN 201910187176A CN 109884732 A CN109884732 A CN 109884732A
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Abstract
The invention relates to a method for delineating a hidden structure in a sedimentary basin, which comprises the following steps: (1) determining an ore-forming phase body, a map filling unit, an ore-forming phase body structural plane and a comprehensive sign of an ore-forming structure through an actual measurement structure petrography section and an actual measurement longitudinal structure petrography section; (2) selecting 2 or 3 typical exploratory line sections and longitudinal sections; (3) preparing basic data and comprehensively arranging programs; (4) the occurrence position of the ore body in the deep part is predicted, and the hidden structure delineation is realized. The method provided by the invention can solve the problem that the deep structure of the sedimentary basin is difficult to accurately and visually reflect, effectively improves the prediction capability of the enrichment and positioning of the polymetallic ore bed in the sedimentary basin, and can be widely applied to the technical field of geological survey.
Description
Technical field
The present invention relates to concealed structure technique for delineating in geological exploration technical field, in particular to a kind of sedimentary basin.
Background technique
Concealed structure refers to that those are limited and constructed the complexity of itself by exploration engineering and cannot specify its feature, property
The construction of matter and history of evolution.Concealed structure developed in sedimentary basin it is very mature, this for petroleum resources have it is important
It is extensive to migrate and at hiding aggtegation.Limited by conventional construction pattern concept and exploration technique, it is difficult to Direct Recognition delineation and
Carry out the complicated structure type of tectonic knot research.High-resolution basis mostly is being mentioned using seismic inversion method in oil exploration
Upper delineation subtle trap, but have difficulties in the recognition methods in later period and ambiguity.Appositional pattern mineral metal products is mostly with audio-frequency electric
The induced electrical soundings methods, substantially delineation abnormality body such as magnetic survey deep (AMT) equally exist uncertain and interpretation multi-solution.Hidden structure
It, could be extensive after the Suresh Kumar made determines that it need to be by means of exploration engineering exposure, the comprehensive charting of topicality and construction lithology charting
The complicated structure pattern and tectonic association rebuild again.
Summary of the invention
In order to solve the above technical problems, technical solution provided by the invention are as follows:
Concealed structure technique for delineating in a kind of sedimentary basin, comprising the following steps:
(1) it by actual measurement construction lithology section and actual measurement longitudinal structure lithology section, determines into mine phase body, charting list
The Comprehensive Criteria of member, Cheng Kuangxiang body structural plane and ore-forming structure；
(2) 2 or 3 typical section of exploration line and vertical section are selected, determines that mineralization body goes out naturally with surface occurence plus trenching
Show up, deep and latent mineralising body interface are determined with drill core plus tunnel engineering, to disclose good mineralization body naturally and lie concealed
Datum level of the mineralising body interface as roof and floor contour；
(3) basic data prepares and comprehensive improvement program；
(4) mine geology figure is projected to according to ready-made ore body roof and floor isogram and ore body bottom plate isogram, tied
Geological condition and the similar variation tendency of roof and floor contour are closed, determines quantization parameter, draws a circle to approve concealed structure pattern and form, ore body
Geometric shape variation, predict the ore body preservation position in deep, thus realize concealed structure draw a circle to approve.
Preferably, the step (3) includes following sub-step:
(3.1) according to surface occurence, the analysis test data of trenching, drilling and tunnel fundamental analysis sample, metal is chosen
Index is drawn a circle to approve as mineralized layer in mineral products mineralising boundary, from lowest part to the cumulative thickness conduct of topmost mineralized layer in each drilling
Its mineralized layer overall thickness draws a circle to approve mineralization body and calculates mineralization intensity, provides data basis for minerogenetic series graph drawing,
Wherein: HiFor the vertical thickness of each mineralized layer, unit m, CiFor the weighted average of the Cu concentrate grade layer sample,
∑ is summation；
(3.2) according to the mineralization intensity range of delineation, the height above sea level of Cu concentrate grade body roof and floor is calculated, with true in Article 2
Fixed datum level as 0m relative elevation absolute altitude, positive value for higher than benchmark height above sea level, negative value be lower than benchmark height above sea level, with
80 rectangular co-ordinates are geographic reference, draw out corresponding roof and floor contour map.
After above method, the present invention has the advantage that
The present invention provides a kind of sedimentary basin concealed structure delineation new method, this method by surface occurence+drilling+
Tunnel engineering carries out actual measurement construction lithology section and analyzes the ore body roof and floor contour map of test data establishment, using audio
The sliding base isolated building top surface contour contrast verification of electromagnetic sounding (AMT) section joint inversion, determines the space shape of concealed structure
State feature；The application of this method solves the problems, such as that sedimentary basin infrastructure is difficult to accurate and visual reflection, and it is heavy to effectively increase
The predictive ability of product basin polymetallic deposit enrichment positioning.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of concealed structure technique for delineating in sedimentary basin.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings.
The present invention is by selecting typical section of exploration line and vertical section in western Tarim Basin, to surface occurence+drilling+tunnel work
Cheng Jinhang actual measurement construction lithology section and analysis test data, determine Ore-forming geology body, Cheng Kuangxiang body, Cheng Kuangxiang body structural plane
With the Comprehensive Criteria and parameter of ore-forming structure.On the basis of Comprehensive Criteria and parameter, establishment ore body roof and floor isogram and
Ore body isopachous map selects the effectively spaces such as announcement Ore-forming geology body, Cheng Kuangxiang body, Cheng Kuangxiang body structural plane and ore-forming structure several
What Morphologic Parameters, carries out hidden ore-forming structure delineation.By the substrate according to audio-electromagnetically depth measurement (AMT) section joint inversion
Techonosphere top surface contour, examines its validity and reliability.
Embodiment one
Concealed structure technique for delineating in a kind of sedimentary basin, comprising the following steps:
(1) it by actual measurement construction lithology section and actual measurement longitudinal structure lithology section, determines into mine phase body, charting list
The Comprehensive Criteria of member, Cheng Kuangxiang body structural plane and ore-forming structure；
(2) 2 typical section of exploration line and vertical section are selected, mineralization body nature exposure is determined with surface occurence plus trenching
Face determines deep and latent mineralising body interface with drill core plus tunnel engineering, to disclose good mineralization body and buried ore naturally
Change datum level of the body interface as roof and floor contour；
(3) basic data prepares and comprehensive improvement program；
(4) mine geology figure is projected to according to ready-made ore body roof and floor isogram and ore body bottom plate isogram, tied
Geological condition and the similar variation tendency of roof and floor contour are closed, determines quantization parameter, draws a circle to approve concealed structure pattern and form, ore body
Geometric shape variation, predict the ore body preservation position in deep, thus realize concealed structure draw a circle to approve.
Step (3) includes following sub-step:
(3.1) according to surface occurence, the analysis test data of trenching, drilling and tunnel fundamental analysis sample, metal is chosen
Index is drawn a circle to approve as mineralized layer in mineral products mineralising boundary, from lowest part to the cumulative thickness conduct of topmost mineralized layer in each drilling
Its mineralized layer overall thickness draws a circle to approve mineralization body and calculates mineralization intensity, provides data basis for minerogenetic series graph drawing,
Wherein: HiFor the vertical thickness of each mineralized layer, unit m, CiFor the weighted average of the Cu concentrate grade layer sample,
∑ is summation；
(3.2) according to the mineralization intensity range of delineation, the height above sea level of Cu concentrate grade body roof and floor is calculated, with true in Article 2
Fixed datum level as 0m relative elevation absolute altitude, positive value for higher than benchmark height above sea level, negative value be lower than benchmark height above sea level, with
80 rectangular co-ordinate of Xi'an is geographic reference, draws out corresponding roof and floor contour map respectively.
In conjunction with attached drawing 1, when carrying out concealed structure delineation in sedimentary basin, it is first determined actual measurement construction lithology section and
Vertical section is determined into mine phase body；Determining ore body and mineralization body boundary are then edited and recorded by drilling construction lithology；By locality
Table, drilling, tunnel lithology sample implement constructing variable measurement；Then, pass through ore body and mineralization body boundary and constructing variable
Comprehensive analysis quantization mine (change) body boundary structural plane is realized in measurement, extracts mine (change) body top bottom surface elevation, production top bottom surface is equivalent
Line chart obtains hidden fold rolling shape, so that delineation concealed structure, prediction deep orebody are realized, to reach of the invention
Purpose.
According to the above method, actual survey is carried out, research and implementation process are as follows.
First, by actual measurement construction lithology section and actual measurement longitudinal structure lithology section, determines into mine phase body and fill out
Figure unit, in the mining area Sa Reke, Ore-forming geology body is two sections of the diligent tribute Soviet Union group in library, has drawn a circle to approve the diligent tribute in library by earth's surface special project charting and has revived
Two sections of distributions of group, can draw a circle to approve into mine phase body.Initially in the diligent tribute Soviet Union phase superimposion fan arid fan fan in the library mine Xiang Tiwei
Parfacies.Basin Metallogenic fluid is superimposed as mine Xiang Tiwei bituminization alteration phase+colour fading alteration phase+fragmentation lithification.Magmatic hydrotherm is folded
Addition mine is mutually alteration brightness corsilite arteries and veins group+colour fading alteration zone.
Second, 4 line of reselection, 30 line section of exploration line and vertical section, to surface occurence+drill core+tunnel engineering etc.
Actual measurement construction lithology section is carried out, determines the synthesis of Ore-forming geology body, Cheng Kuangxiang body, Cheng Kuangxiang body structural plane and ore-forming structure
After mark, finally selection can effectively disclose the spaces such as Ore-forming geology body, Cheng Kuangxiang body, Cheng Kuangxiang body structural plane and ore-forming structure
Geometric state parameter carries out latent Ore-forming geology body, is hidden at mine phase body structural plane and the description of hidden ore-forming structure and special project
Charting.
Third, ledge depth isoline graph and orebody thickness isogram and its changing rule are made for disclosing at mine
With finally formed ore body and mineralising body thickness, to disclose the mineral deposit industrial utilization potentiality and status.This research will divide substantially
Delineation index of Cu≤0.1% as Cu concentrate grade layer (body) in sample is analysed, to draw a circle to approve interface and upper interface under ore-forming structure face.Most
Interface and top interface under ore-forming structure face are drawn a circle to approve in the bottom interface of lower part and topmost Cu concentrate grade body (Cu≤0.1%) and top interface；
Being to the accumulative vertical thickness of topmost Cu concentrate grade layer from lowest part is ledge thickness；It is considered that the thickness of ledge is equivalent
Line chart, has drawn a circle to approve the spatial dimension of metallogenetic structure face and mineralization, and changing rule also reveals metallogenetic structure face and Cheng Kuang
The Spatial Variation and space geometry morphological feature of effect.
4th, basic data prepares and comprehensive improvement program is as follows:
1. according to surface occurence, the analysis test data of drilling and tunnel fundamental analysis sample, in ore blocked out and mineralising
Body arranges data on the basis of boundary, provides data basis for minerogenetic series graph drawing；
2. establishment is equivalent according to the surface occurence+exploratory trench+drill core+tunnel engineering analysis test data being collected into
Linear system column graph；
3. the ore body roof and floor isogram and ore body isopach that are ready for are projected to mine geology figure, in conjunction with geology
Situation can study the master stratum of ore body preservation, and the ore body preservation position in deep is predicted in the variation of the geometric shape of ore body,
It prepares for metallogenic prognosis；
4. this, which has collected the coordinate data of the engineerings such as exploratory trench, drilling and fundamental analysis, sees mine absolute altitude as a result, cleaning out, meter
Orebody thickness is calculated, then according to ledge depth isoline graph, to the Ore-forming geology body of Xinjiang Sa Reke Copper Deposit, at mine
It constructs and metallogenetic structure noodles type is determined with petrographic appraisal mark is constructed, and to their spatial shape and by force
The degree regularity of distribution is studied.
5th, mine (change) body top plate and bottom plate contour map draw a circle to approve hidden fold.
In the Copper Mine Sa Reke, the top plate contour of topmost mine (change) body and the bottom plate of lowest part mine (change) body are contour
Line chart can effectively draw a circle to approve the top surface contour and bottom surface contour of Ore-forming geology body, i.e., by copper mine body, Cu concentrate grade body, mine
Change country rock etc. between body and constitutes Ore-forming geology body.According to fundamental analysis data institute in the drilling of the Copper Mine Sa Reke and well lane engineering
The copper mine body and Cu concentrate grade body of delineation calculate the height above sea level of Cu concentrate grade body roof and floor, with 2930 meters for benchmark elevation face (i.e. 0m
Relative contour), draw roof and floor contour map.Positive value is, higher than 2930m height above sea level, negative value is lower than 2930m height above sea level mark
Height, 0m are equal to 2930m height above sea level.Find out from mine (change) the body top plate contour and bottom plate contour map of the Copper Mine Sa Reke,
Mine (change) body top plate contour and bottom plate contour have similar variation tendency, they have drawn a circle to approve Sa Rekebayi grade Basin In Western
The space geometry morphological feature and the regularity of distribution of the latent Ore-forming geology body in the portion Copper Mine Sa Reke and nearly periphery.In Sa Rekeba
Successively secondary nose base at 23,0 and 40-44 of grade basin east southeast edge exploration line, northwest (NW) edge 29,32 and 56 exploration line southern sides delineation six
Bottom protuberance.
Finally, Cu concentrate grade intensity isogram and at mine intensity isogram and their changing rules, can effectively identify
With delineation mineralization intensity and at mine intensity, convenient for system comparative analysis being carried out, for this in other areas and global range
Region deep and Peripheral Prospecting prediction provide foundation.
Claims (2)
1. concealed structure technique for delineating in a kind of sedimentary basin, which comprises the following steps:
(1) by actual measurement construction lithology section and actual measurement longitudinal structure lithology section, determine at mine phase body, mapping unit,
At the Comprehensive Criteria of mine phase body structural plane and ore-forming structure；
(2) 2 or 3 typical section of exploration line and vertical section are selected, determines that mineralization body goes out to show up naturally with surface occurence plus trenching,
Deep and latent mineralising body interface are determined with drill core plus tunnel engineering, to disclose good mineralization body and latent mineralization body naturally
Datum level of the interface as roof and floor contour；
(3) basic data prepares and comprehensive improvement program；
(4) mine geology figure is projected to according to ready-made ore body roof and floor isogram and ore body bottom plate isogram, in combination
Matter situation and the similar variation tendency of roof and floor contour, determine quantization parameter, draw a circle to approve concealed structure pattern and form, ore body it is several
The variation of what form, predicts the ore body preservation position in deep, to realize that concealed structure is drawn a circle to approve.
2. concealed structure technique for delineating in a kind of sedimentary basin according to claim 1, which is characterized in that the step
(3) include following sub-step:
(3.1) according to surface occurence, the analysis test data of trenching, drilling and tunnel fundamental analysis sample, mineral metal products is chosen
Index is drawn a circle to approve as mineralized layer in mineralising boundary, from lowest part to the cumulative thickness of topmost mineralized layer as its mine in each drilling
Change layer overall thickness, draw a circle to approve mineralization body and calculate mineralization intensity, provides data basis for minerogenetic series graph drawing,
Wherein: HiFor the vertical thickness of each mineralized layer, unit m, CiFor the weighted average of the Cu concentrate grade layer sample, ∑ is
Summation；
(3.2) according to the mineralization intensity range of delineation, the height above sea level of Cu concentrate grade body roof and floor is calculated, with what is determined in Article 2
Datum level is as 0m relative elevation absolute altitude, and positive value is, higher than benchmark height above sea level, negative value is lower than benchmark height above sea level, directly with 80
Angular coordinate is geographic reference, draws out corresponding roof and floor contour map.
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Cited By (3)
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| CN110609331A (en) * | 2019-09-24 | 2019-12-24 | 中国地质调查局西安地质调查中心 | Hidden deposition type manganese-rich ore identification method |
| CN112305607A (en) * | 2020-10-28 | 2021-02-02 | 中国石油天然气集团有限公司 | Method and device for drawing longitudinal section graph of seismic data |
| CN113031107A (en) * | 2021-03-09 | 2021-06-25 | 中铁工程设计咨询集团有限公司 | Coal kiln goaf exploration method |
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| CN110609331A (en) * | 2019-09-24 | 2019-12-24 | 中国地质调查局西安地质调查中心 | Hidden deposition type manganese-rich ore identification method |
| CN112305607A (en) * | 2020-10-28 | 2021-02-02 | 中国石油天然气集团有限公司 | Method and device for drawing longitudinal section graph of seismic data |
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