黃土高原城市工程地質(zhì)分區(qū)——以銅川地區(qū)為例
[Abstract]:The scientific location and planning of new urban areas need to be based on clear engineering geological conditions. Therefore, the study of engineering geological zoning around the city has become a key link in the development of cities and towns at present. Taking Tongchuan area as an example, the geomorphological types are determined according to geological structure and geomorphological evolution. According to the difference of Quaternary sediment assemblages, the sedimentary structure of strata is divided into three types: aeolian sedimentary type, alluvial type and aeolian alluvial composite sedimentary type. According to the results of collapsibility test, the loess buried depth more than 22 m has no self-gravity collapsibility, and the buried depth more than 24 m does not have collapsibility, according to the calculated value of collapsibility, the study area can be divided into non-collapsible area, grade 2, grade 3 and grade 4. On this basis, the study area is divided into 4 regions (low middle mountain area, loess tableland region, loess hilly area and valley stage area) and 8 subregions, and the engineering characteristics of each engineering geological area are summarized. Among them, the low middle mountain area and loess hilly area are not suitable for construction, the grade 2 high platform subregion and the 2 grade low platform subregion of the loess plateau area are suitable for construction, the part of valley stage area is suitable for building; The grade 3, grade 4, grade 4 and grade 3 of the loess tableland are suitable for construction after foundation treatment. The research results can provide guidance and reference for future urban site selection and engineering construction planning under similar geological conditions in the Loess Plateau.
【作者單位】: 長(zhǎng)安大學(xué)地質(zhì)工程與測(cè)繪學(xué)院;
【基金】:國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(“973”計(jì)劃)項(xiàng)目(2014CB744701) 國(guó)家自然科學(xué)基金項(xiàng)目(40972181,413032251) 中國(guó)地質(zhì)調(diào)查局項(xiàng)目(12120114056901)~~
【分類(lèi)號(hào)】:P642.4
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