CN116090244A - Method for investigating historical landform building bad geological condition - Google Patents
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Abstract
The invention provides a method for investigating poor geological conditions of historical landscape architecture, which comprises the following steps: s1, determining geological conditions; s2, determining bad geological conditions affecting the building; s3, collecting data and establishing a database; s4, analyzing data; s5, determining whether the building is in a poor geological region; the invention applies historical data, regional geological data, engineering drilling data and the like to poor geological condition investigation based on geotechnical engineering big data, not only provides a basis for analyzing the damage reason of a building and making protective measures, but also provides a reliable basis for accurately judging the protection situation and scientifically making a protection policy, and ensures long-term safety and normal use of the historical landscape building.
Description
Technical Field
The invention belongs to the field of geological survey, and particularly relates to a method for investigating poor geological conditions of historical landscape architecture.
Background
The current condition and the future development change of the underground geological condition are directly related to the safety and normal use of the foundation and the structure of the historical landscape architecture. For example, some urban geological conditions are complex, bad geological conditions such as seismic liquefaction, old river, soft soil, sedimentation and fracture possibly exist, engineering properties are poor, certain influence can be generated on the safety of a building, and uneven sedimentation, inclination and cracking of the building and even structural damage can be caused when the engineering properties are serious. It is therefore important to investigate the geological conditions of historical landscape architecture, and in particular to investigate whether a building is sitting in a developing zone of poor geological conditions.
Disclosure of Invention
In view of the above, the present invention aims to provide a method for investigating poor geological conditions of historical landscape architecture, which applies historical data, regional geological data, engineering drilling data and the like to poor geological condition investigation based on geotechnical engineering big data, not only provides a basis for analyzing and formulating protection measures for damage reasons of the architecture, but also provides a reliable basis for accurately judging protection situations and scientifically formulating protection policies, and ensures long-term safety and normal use of the historical landscape architecture.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
a method for investigating historic wind-like poor-building geological conditions, characterized by: the method comprises the following steps:
s1, determining geological conditions; determining geological conditions of the area where the historical landscape building is located;
s2, determining bad geological conditions affecting the building; determining unfavorable geological conditions affecting long-term safety and normal use of a historical landscape building;
s3, collecting data and establishing a database; collecting historical data of bad geological conditions and establishing a database;
s4, analyzing data; analyzing through data and realizing informatization and digitalization through CAD;
s5, determining whether the building is in a poor geological region; the specific location of the building is determined by CAD.
Further, in S1, according to national and local standards, each geological condition of the region where the historic landscape architecture is located is determined from aspects of the topography, regional geology, engineering geology, hydrogeology, geological disasters and the like.
Further, the adverse geological conditions in S2 include ancient river, ancient pit, soft soil, liquefied soil, sedimentation, fracture, collapse, landslide and debris flow.
Further, in S3, a poor geological condition database is built by collecting historical data of poor gas conditions, regional geological data of a region where a historical landscape building is located, engineering drilling data and research results, and a data table comprising a drilling information table, a stratum information table and a physical index table is built according to engineering investigation data types.
Further, in S4, the informatization and the digitalization by CAD include:
s41, selecting relevant analysis, evaluation and drawing data aiming at each bad geological condition. If aiming at soft soil, various soft soil stratum data of drilling holes are selected, including cause, lithology and depth, abnormal data processing is carried out according to standard standards and local engineering experience, and abnormal values are removed;
s42, carrying out statistics and calculation on the data needing further analysis. If a development distribution diagram of the liquefied soil is produced, stratum data, standard penetration data and particle test data of a drill hole are selected, whether the stratum is liquefied or not is judged according to relevant standard standards, a liquefaction index is calculated, and the liquefaction degree and the type of the liquefied soil are judged;
s43, after the processed data are accurately positioned according to the drilling coordinates, the processed data are respectively spread in CAD to form different data layers, and various drawing pieces are drawn according to the data.
Further, the development degree of the bad condition is analyzed based on the data map layer obtained in S43.
Compared with the prior art, the method for investigating the poor geological conditions of the historical landscape architecture has the following advantages:
according to the method for investigating the poor geological conditions of the historical landscape architecture, based on geotechnical engineering big data and historical data, the poor geological conditions affecting long-term safety and normal use of the historical landscape architecture can be scientifically identified and determined, the operability is high, the investigation and identification cost is greatly reduced, and the accuracy is high; not only accords with the common habit of engineering, but also is an extension of informatization and digital development in the geotechnical engineering industry, and has important significance in researching and analyzing the damage reason of the building, and in the aspects of later making protection measures, protection policies and the like; the method is favorable for realizing resource integration, information sharing, comprehensive analysis and decision support of the work such as unified management, maintenance, repair, research and the like of the historical landscape building, and plays an important role in comprehensively improving the protection utilization level of the building.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a flow chart of a method for investigating poor geological conditions of a historical landscape architecture according to an embodiment of the invention;
FIG. 2 is a diagram of a historical landscape architecture location according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of investigation and evaluation of historical landform poor geological conditions according to an embodiment of the invention;
FIG. 4 is a distribution law chart (including distribution, depth and lithology) of an ancient river according to an embodiment of the present invention;
FIG. 5 is a graph of distribution rules (class, type) of the liquified soil according to an embodiment of the present invention;
FIG. 6 is a graph of the distribution of annual sedimentation rate according to an embodiment of the present invention;
FIG. 7 is a graph of fracture distribution rules according to an embodiment of the present invention;
FIG. 8 is a chart of distribution rules of the slump flow according to an embodiment of the present invention;
fig. 9 is a diagram showing the superposition of historic landscape architecture and liquified soil distribution according to an embodiment of the present invention.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
In the embodiment, taking the investigation of a certain historical landscape building geological condition of Tianjin city as an example, the implementation mode of the method in the actual situation is introduced;
a method for investigating poor geological conditions of historical landscape architecture; according to the standards of geological disaster risk assessment Specification GB/T40112-2021, urban and rural planning engineering geological survey Specification CJJ57-2012, geotechnical engineering survey Specification GB50021-2001 (2009 edition), building foundation base design Specification GB50007-2011, building earthquake resistant design Specification GB50011-2010 (2016 year edition), foundation treatment Specification JGJ72-2012, existing building foundation base reinforcement Specification JGJ123-2012, building pile foundation Specification JGJ 94-2008), tianjin rock and soil engineering Specification DB/T29-20-2017, tianjin rock and soil engineering survey Specification DB/T29-247-2017, tianjin rock and soil base sequence division Specification DB/T29-191-2009, and the like, the condition of the geological disaster is determined from the aspects of topography, region, geology, engineering geology, hydrology, geology and geology of Tianjin city;
1) The Tianjin area is divided into three large morphological type areas of mountain hills, a stacking plain and coastal intertidal zones and eight secondary causal morphological types, and a central urban area is positioned in a sea area alluvial low plain subarea in the stacking plain area;
2) The main fracture zone in Tianjin area belongs to a Xinhua-xia structural system and belongs to torsion fracture, and the main fracture comprises mountain front fracture, thistle canal fracture, baby fracture, sea river fracture, tianjin fracture, cang east fracture, han ditch fracture, temple fracture and the like;
3) Foundation soil within a depth of 20m belongs to the fourth series of new generation (Q4), and the foundation soil is formed by artificial accumulation, pit bottom sedimentation, ancient river and depression sedimentation, riverbed-river flood beach phase sedimentation, lake and marsh phase sedimentation, shallow sea phase sedimentation and marsh phase sedimentation. Lithology includes filled soil, mucky soil, cohesive soil, and silt soil. The special soil for development distribution mainly comprises artificial filling soil, newly deposited soil and sea-phase soft soil;
4) A diving aquifer and a first confined water aquifer develop in the depth range of 20m, and a seasonal upper layer of a stagnant water layer exists in a local area;
5) The ancient river and palace in Tianjin area are numerous, the engineering geology and hydrogeology characteristics are affected by the stacking times, historical factors and the like, the difference between the engineering geology and the hydrogeology is large from the normal sediments, and most of the stacked matters are artificial filling and recent sediments;
6) The Tianjin area is a typical saturated silt liquefaction area, and the local situation of saturated sand liquefaction exists, and the Tangshan seismic liquefaction investigation data show that the Tianjin area has serious seismic liquefaction;
7) The main reason of Tianjin ground subsidence is the development and utilization of groundwater, and due to the increase of 'high and deep' construction projects in recent years, a part of important construction areas have obvious ground subsidence along with the large pumping and drainage of groundwater;
8) Collapse, landslide and debris flow are developed in the northern mountain area of Tianjin city;
according to the standard and the actual environmental conditions of the historical landscape architecture, comprehensively considering the dangerous (harm) degree of each geological condition (shown in table 1), and finally determining bad geological conditions which influence the long-term safety and normal use of the historical landscape architecture, including ancient river, ancient pit, soft soil, liquefied soil, sedimentation, fracture, collapse, landslide and mud-rock flow; the risk (hazard) levels for each geological condition are shown in table 1 below;
collecting relevant historical data of poor geological conditions in the table, and regional geological data, engineering drilling data, research results and the like of the region where the historical landscape architecture is located, establishing a poor geological condition database, and establishing a data table according to engineering investigation data types, wherein the data table comprises a drilling information table, a stratum information table and a physical index table;
and (3) researching the development distribution range and development degree of various unfavorable geological conditions through data and data analysis, and determining required investigation and evaluation graphs. Based on CAD and other software, informatization and digitalization of bad geological conditions are realized, and development distribution rule graphs of all geological conditions are manufactured;
and selecting relevant analysis, evaluation and drawing data aiming at each bad geological condition. For soft soil, various types of soft soil stratum data of drilling holes need to be selected, including factors, lithology, depth and the like; according to the standard and local engineering experience, abnormal data processing is carried out to remove abnormal values; carrying out statistics and calculation on data needing further analysis; if the development distribution diagram of the liquefied soil is produced, stratum data, standard penetration data and particle test data of a drill hole are selected, whether the stratum is liquefied or not is judged according to relevant standard standards, the liquefaction index is calculated, and the liquefaction degree and the type of the liquefied soil are judged.
And after the processed data are precisely positioned according to the drilling coordinates, respectively spreading the data in CAD and other software to form different data layers, and drawing various drawing pieces according to the data. If the soft soil is aimed at, an ancient river soft soil thickness layer, a sea soft soil thickness layer and a pit bottom sludge thickness layer are formed, soft soil thickness partition diagrams are drawn according to thickness data, and various drawn areas represent soft soil with different thicknesses.
The historical landscape building range line is overlapped into each geological condition development distribution rule drawing piece such as an ancient river channel, a ditch pit and the like through CAD and other software, the specific position of the building is determined, whether the building is located in a poor geological condition development area is analyzed, and the development degree of each poor geological condition is analyzed through information in the drawing. The details of the investigation are shown in table 2 below,
the final investigation results are shown in Table 3 below
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (6)
1. A method for investigating historic wind-like poor-building geological conditions, characterized by: the method comprises the following steps:
s1, determining geological conditions; determining geological conditions of the area where the historical landscape building is located;
s2, determining bad geological conditions affecting the building; determining unfavorable geological conditions affecting long-term safety and normal use of a historical landscape building;
s3, collecting data and establishing a database; collecting historical data of bad geological conditions and establishing a database;
s4, analyzing data; analyzing through data and realizing informatization and digitalization through CAD;
s5, determining whether the building is in a poor geological region; the specific location of the building is determined by CAD.
2. A method of investigating historic weather conditions in poor geological conditions according to claim 1, characterized in that: and S1, determining each geological condition of the region where the historical landscape architecture is located according to national and local standards from aspects of topography, regional geology, engineering geology, hydrogeology, geological disasters and the like.
3. A method of investigating historic weather conditions in poor geological conditions according to claim 1, characterized in that: the adverse geological conditions in S2 comprise ancient river channels, ancient ditches, soft soil, liquefied soil, sedimentation, fracture, collapse, landslide and debris flow.
4. A method of investigating historic weather conditions in poor geological conditions according to claim 1, characterized in that: and S3, establishing a poor geological condition database by collecting historical data of poor gas conditions, regional geological data of a region where the historical landscape architecture is located, engineering drilling data and research results, and establishing a data table according to engineering investigation data types, wherein the data table comprises a drilling information table, a stratum information table and a physical index table.
5. A method of investigating historic weather conditions in poor geological conditions according to claim 1, characterized in that: in S4, the informatization and the digitalization by CAD include:
s41, selecting relevant analysis, evaluation and drawing data aiming at each bad geological condition; if aiming at soft soil, various soft soil stratum data of drilling holes are selected, including cause, lithology and depth, abnormal data processing is carried out according to standard standards and local engineering experience, and abnormal values are removed;
s42, carrying out statistics and calculation on data needing further analysis; if a development distribution diagram of the liquefied soil is produced, stratum data, standard penetration data and particle test data of a drill hole are selected, whether the stratum is liquefied or not is judged according to relevant standard standards, a liquefaction index is calculated, and the liquefaction degree and the type of the liquefied soil are judged;
s43, after the processed data are accurately positioned according to the drilling coordinates, the processed data are respectively spread in CAD to form different data layers, and various drawing pieces are drawn according to the data.
6. A method of investigating historic weather conditions in accordance with claim 5, characterized in that: the development degree of the bad condition is analyzed according to the data layer obtained in S43.
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