【摘要】：北京-天津(京津)城際鐵路經(jīng)過(guò)地面沉降漏斗邊緣,其安全運(yùn)營(yíng)隨著不均勻沉降的增加而威脅增加。采用時(shí)序干涉測(cè)量技術(shù)監(jiān)測(cè)鐵路沿線地表形變,結(jié)合剖面分析與時(shí)序分析方法探討其與影響因素之間的響應(yīng)特征,揭示鐵路沿線不均勻地面沉降空間分布與演化特征。結(jié)果表明,梯度可以很好地體現(xiàn)區(qū)域地面沉降不均勻性,研究區(qū)可壓縮層厚度、地下水開(kāi)發(fā)利用情況、鐵路運(yùn)行等均與地面沉降呈現(xiàn)正相關(guān)關(guān)系。可壓縮層的存在為沉降發(fā)生的基礎(chǔ)條件,地下水開(kāi)發(fā)利用與鐵路運(yùn)營(yíng)為沉降產(chǎn)生的主導(dǎo)條件,二者的時(shí)空分布情況共同決定不均勻地面沉降的發(fā)展演化。
[Abstract]:Beijing-Tianjin (Beijing-Tianjin) intercity railway passes through the edge of the ground subsidence funnel, and its safe operation increases with the increase of uneven settlement. The time series interferometry is used to monitor the surface deformation along the railway line, and the response characteristics between it and the influencing factors are discussed in combination with the method of profile analysis and time series analysis, and the spatial distribution and evolution characteristics of the uneven land subsidence along the railway are revealed. The results show that the gradient can well reflect the heterogeneity of regional land subsidence, and the thickness of compressible layer, groundwater exploitation and utilization, railway operation and so on are all positively correlated with the land subsidence. The existence of compressible layer is the basic condition of subsidence, and the development and utilization of groundwater and railway operation are the dominant conditions of settlement. The spatial and temporal distribution of the two factors jointly determine the development and evolution of uneven land subsidence.
【作者單位】： 天津城建大學(xué)地質(zhì)與測(cè)繪學(xué)院;北京市地質(zhì)研究所;首都師范大學(xué)資源環(huán)境與旅游學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(41130744,41171335,41401492) 天津市自然科學(xué)基金(16JCZDJC40400)~~
【分類(lèi)號(hào)】：P642.26

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