CN103134555A - Quantitative assessment method for stone cultural relic component weathering and security degree - Google Patents
Quantitative assessment method for stone cultural relic component weathering and security degree Download PDFInfo
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- CN103134555A CN103134555A CN2013100582900A CN201310058290A CN103134555A CN 103134555 A CN103134555 A CN 103134555A CN 2013100582900 A CN2013100582900 A CN 2013100582900A CN 201310058290 A CN201310058290 A CN 201310058290A CN 103134555 A CN103134555 A CN 103134555A
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Abstract
A quantitative assessment method for stone cultural relic component weathering and security degree includes the following steps: selecting physical properties which can be achieved through lossless or micro-damaged detecting and capable of reflecting features of rock weathering and security as evaluation indexes according to protective principles of cultural relics, distributing corresponding weighted values to all the evaluation indexes through an expert scoring method to reflect degree of impact of different indexes to the component weathering and the security degree, dividing weathering degree into five levels and the security degree into four levels and formulating point values for all levels, preliminarily determining the weathering degree and the security degree according to a single evaluation index, and adopting a point weighting method to calculate final weathering points and security points of all the components to achieve the weathering degree and the security degree of the component visually and accurately.
Description
Technical field
The present invention relates to the historical relic's protection field, specifically a kind of mode that adopts quantification is estimated the method for stone cultural artifact member dimming class and safe class.
Background technology
The weathering of stone cultural artifact and safety case affect integrality, appreciative value and the value of historical relic; and exist historical relic and personal safety hidden danger; it is detected and assesses to satisfy administration of estate department, public's requirement, detect and the assessment achievement can be follow-up Protection reliable foundation is provided.At first the key of stone cultural artifact weathering and safe coefficient evaluation is to adopt nondestructiving detecting means that stone cultural artifact is detected, and is secondly to select feasible, suitable, evaluation index and evaluation method accurately.Because historical relic has non-renewablely, can not damage historical relic to its activities that carries out, so be limited to harmless or little damage method on detection means; In addition, different to the influence degree of member own with corresponding physical property due to member weathering type on the one hand, be difficult to by single physical property index weathering and the safe coefficient that thoroughly evaluating goes out whole member; On the other hand, the atmospheric disintegration of rocks degree has the feature of gradual change, and the separatrix between each adjacent rate of decay is fuzzyyer, can not accurately evaluate adjacent rate of decay take qualitative evaluation as main method in the past.In order to address the above problem, for the stone cultural artifact evaluation has proposed a kind of evaluation method accurately, has actual application value.
Summary of the invention
The objective of the invention is to study and a kind ofly can estimate out accurately, quantitatively the method for the weathering of stone cultural artifact member and safe class.
Stone cultural artifact member of the present invention weathering and safe class rating method; idiographic flow such as Fig. 1; content comprises: according to the historical relic's protection principle, choose and can obtain by harmless and little damage detection, can reflect that the physical property of rock decay and security feature is as the index of estimating weathering and safety case simultaneously.The weathering evaluation index of choosing comprises: surface integral situation, numbers of hole, diameter, crack what, thickness, surperficial crisp opaque amount, whole rebound strength; Safety evaluation index comprises: ultrasonic velocity, and whether crack rebound strength along the line has load Crack, and fracture width, number, the degree of depth, length are calculated rupture strength.
(1) surface integral situation
After rock decay, significant change can appear in surface topography, as peel off, efflorescence, corrosion cause carved pattern fuzzy, affects the whole ornamental value of historical relic, and be even incomplete.According to the overall variation degree of surface topography, the weathering rank of determination means roughly.
(2) numbers of hole, diameter
Diagenetic process can form the primary pores such as intracrystalline pore, intergranular pore, the bird's eye hole of trace, under the long-term extraneous medium effect of use procedure, rock crystals and intracrystalline pore form large hole through corrosion or recrystallization, by measuring member numbers of hole and diameter, can be used as a foundation judging rate of decay.
(3) crack situation
All the time, the crack is all the important indicator of estimating weathering and safety case.The rock's microstructure face refers to mineral grain inside or intergranular plane of weakness or defective, comprises mineral cleavage, lattice imperfection, intergranular pore, microfracture, microbedding face etc.Macroscopical structure plane is mainly the various connate deposit structural planes in the rock mass forming process, is mainly the structure that forms in the sedimentary formation stage (in deposition process, before the Diagn end), comprises bed plane, rock stratum face, unconformity surface and weak intercalated layer.Under the effect of weathering medium, can produce fine cracks at element structure face place, crack growth forms the crack gradually, may cause at last the member fracture damaged.
(4) load Crack
Some crack is to produce in member defective or texture weakness, place's generation is concentrated at member stress in some crack, the former is less to the security implication of integrated member, the latter is owing to belonging to load Crack, be subject to for a long time the double action of stress and weathering, be easy to cause member at the place, crack, shear fracture to occur, very large to the security implication of member.
(5) surperficial crisp opaque amount
Rock surface is subject to that extraneous weathering is the most direct, and rock is easy under the effect of illumination, rainwater and wind-force, and the efflorescence situation appears in the surface, can be with the foundation of the crisp opaque amount of rock surface as the judgement rate of decay.
(6) rebound strength
Rebound strength has reflected hardness and the intensity of component surface, and rock rebound value concentrated expression lithology preferably, rock strength and rate of decay are found in research, and the rock mass surface is fresher, and rebound strength is larger, shows that rock mass surface weathering is slighter.The existence in rebound strength reflection along the line crack, crack causes surface strength to change, as a parameter of safety evaluation.
(7) ultrasonic velocity
Rock ultrasonic investigation technology reflects physico mechanical characteristic and the inner structural features of rock indirectly by detecting the variation of the parameters,acoustic of ultrasound wave in the solid dielectrics such as rock mass.The velocity of propagation of ultrasound wave in rock reflected the elastic property of material and for information about in-built, not only can measure the intensity of rock, and can reflect whether defective is arranged in rock, if in the rock of test, microfracture or other stuff are arranged, when sound wave arrives structural interface, to produce the effects such as reflection, scattering and diffraction, velocity of wave is reduced greatly.According to the variation characteristic of the velocity of sound, can differentiate the weathering situation of rock sample.
(8) rupture strength
The member weathering causes the decline of member integrated rupture strength, for the member that load Crack is arranged, during the rupture strength that can bear greater than member self due to the intensity that fractures of stressed generation when crack place, will cause the member fracture.
According to the influence degree of each index to weathering and safety case, determine weighted value by expert's scoring, following table is determining of weighted value.
The weathering situation is divided into five ranks: intact, slight weathering, moderate weathering, height weathering and weathering fully; Safety case is divided into four ranks: safety, Generally Recognized as safe, have hidden danger and demand urgently processing.For weathering and the safety case of distinguishing different stage, for each rank is given corresponding point value, following table is determining of point value.
Tentatively determine weathering and safe class according to each member one-parameter index.According to member (X
1, X
2, X
3... X
i) each index preliminary evaluation is done in weathering and safe class, obtain the rank L of member according to the evaluation of one-parameter index
ij, following table is preliminary determine weathering rank and level of security.
Obtain the weathering point value W of each member by the weighted calculation of counting
iWith point of safes numerical value S
iEstimate the grade L that obtains under the one-parameter index according to each member
ij, find the point value P under this rank
ij, the while is with reference to the weighted value Q of this evaluating
ij, according to following formula, calculate the member evaluation and count, can be intuitively, the accurately present residing weathering of determination means and safe coefficient.
Description of drawings
Fig. 1 is that the weathering of stone cultural artifact member and safe class are estimated process flow diagram
Embodiment
According to the historical relic's protection principle, choose to detect by harmless or little damage and can obtain, can reflect that the physical property of rock decay and security feature is as evaluation index simultaneously.The weathering index of choosing comprises the surface integral situation, numbers of hole, diameter, crack what, thickness, surperficial crisp opaque amount, whole rebound strength.Choose following physical property as the index of evaluate safety grade: ultrasonic velocity, whether crack rebound strength along the line has load Crack, and fracture width, number, the degree of depth, length are calculated rupture strength.
According to the influence degree of each index to weathering and safety case, determine weighted value such as following table by expert's scoring.
The weathering situation is divided into five ranks: intact, slight weathering, moderate weathering, height weathering and weathering fully; Safety case is divided into four ranks: safety, Generally Recognized as safe, have hidden danger and demand urgently processing.For weathering and the safety case of distinguishing different stage, give corresponding point value for each rank and see the following form.
Tentatively determine weathering and safe class L according to each member one-parameter index
ij
Obtain the weathering point value W of each member by the weighted calculation of counting
iWith point of safes numerical value S
iComputing formula is as follows:
Claims (6)
1. stone cultural artifact member weathering and safe class method for quantitatively evaluating.
2. according to the historical relic's protection principle, choose to detect by harmless or little damage and can obtain, can reflect that the physical property of rock decay and security feature is as evaluation index simultaneously; The weathering evaluation index of choosing comprises: surface integral situation, numbers of hole, diameter, crack what, thickness, surperficial crisp opaque amount, whole rebound strength; Choose following physical property as the index of evaluate safety situation: ultrasonic velocity, whether crack rebound strength along the line has load Crack, and fracture width, number, the degree of depth, length are calculated rupture strength.
3. distribute corresponding weighted value by expert's scoring for each evaluation index, reflect that different indexs are to the influence degree of member weathering and safe class.
4. rate of decay is divided into five ranks, safe coefficients and is divided into four ranks; Five ranks of rate of decay: intact, slight weathering, moderate weathering, height weathering and weathering fully; Four ranks of safe coefficient: safety, Generally Recognized as safe, have hidden danger and demand urgently processing, and each rank is drafted point value.
5. according to dimming class and the safe class of single evaluation index preliminary judgement member.
6. adopt the weighted method of counting, calculate the final weathering of each member and count and count safely, obtain intuitively, exactly weathering and the safe class of member.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717149A (en) * | 2016-01-27 | 2016-06-29 | 中南大学 | Basalt weathering degree judging method |
| CN105911256A (en) * | 2016-06-17 | 2016-08-31 | 清华大学 | Testing method for quantifying surrounding rock grade |
| CN107515025A (en) * | 2017-07-17 | 2017-12-26 | 西安理工大学 | Old City Wall disease grade appraisal procedure |
| CN108985535A (en) * | 2017-08-09 | 2018-12-11 | 北京清华同衡规划设计研究院有限公司 | Application of the cuclear density analytic approach in historical relic's protection grade classification |
| CN110083930A (en) * | 2019-04-25 | 2019-08-02 | 中国地质大学（北京） | The construction method and device of shale weathering index |
| CN110472597A (en) * | 2019-07-31 | 2019-11-19 | 中铁二院工程集团有限责任公司 | Rock image rate of decay detection method and system based on deep learning |
| CN110927000A (en) * | 2019-10-28 | 2020-03-27 | 中国地质大学（北京） | Method for rapidly evaluating weathering degree of stone cultural relics |
| CN111261236A (en) * | 2020-01-21 | 2020-06-09 | 山东大学 | Tunnel igneous rock weathering degree determining system and method |
| CN116913416A (en) * | 2023-09-12 | 2023-10-20 | 中国地质大学（北京） | Quantitative evaluation and prediction method and device for weathering degree of sea rock |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717149B (en) * | 2016-01-27 | 2018-08-24 | 中南大学 | A kind of method of discrimination of basalt weathered degree |
| CN105717149A (en) * | 2016-01-27 | 2016-06-29 | 中南大学 | Basalt weathering degree judging method |
| CN105911256A (en) * | 2016-06-17 | 2016-08-31 | 清华大学 | Testing method for quantifying surrounding rock grade |
| CN105911256B (en) * | 2016-06-17 | 2017-12-19 | 清华大学 | Quantify the method for testing of country rock grade |
| CN107515025B (en) * | 2017-07-17 | 2020-01-14 | 西安理工大学 | Ancient city wall disease grade evaluation method |
| CN107515025A (en) * | 2017-07-17 | 2017-12-26 | 西安理工大学 | Old City Wall disease grade appraisal procedure |
| CN108985535A (en) * | 2017-08-09 | 2018-12-11 | 北京清华同衡规划设计研究院有限公司 | Application of the cuclear density analytic approach in historical relic's protection grade classification |
| CN110083930A (en) * | 2019-04-25 | 2019-08-02 | 中国地质大学（北京） | The construction method and device of shale weathering index |
| CN110472597A (en) * | 2019-07-31 | 2019-11-19 | 中铁二院工程集团有限责任公司 | Rock image rate of decay detection method and system based on deep learning |
| CN110927000A (en) * | 2019-10-28 | 2020-03-27 | 中国地质大学（北京） | Method for rapidly evaluating weathering degree of stone cultural relics |
| CN111261236A (en) * | 2020-01-21 | 2020-06-09 | 山东大学 | Tunnel igneous rock weathering degree determining system and method |
| WO2021147553A1 (en) * | 2020-01-21 | 2021-07-29 | 山东大学 | System and method for determining degree of weathering of igneous rock in tunnel |
| CN116913416A (en) * | 2023-09-12 | 2023-10-20 | 中国地质大学（北京） | Quantitative evaluation and prediction method and device for weathering degree of sea rock |
| CN116913416B (en) * | 2023-09-12 | 2023-12-26 | 中国地质大学（北京） | Quantitative evaluation and prediction method and device for weathering degree of sea rock |
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Application publication date: 20130605 |