發(fā)布時(shí)間：2018-05-28 03:33

  本文選題：巖溶地面塌陷 + 沙漏型塌陷�。� 參考：《中國巖溶》2017年01期

【摘要】：為了進(jìn)一步研究覆蓋型巖溶地面塌陷的發(fā)生條件和機(jī)理,在作者關(guān)于土體塌陷理論的基礎(chǔ)上,著重研究了滲漏型地面塌陷的地質(zhì)現(xiàn)象、地質(zhì)模型、物理模型及其數(shù)學(xué)表達(dá)式。根據(jù)地質(zhì)現(xiàn)象和砂性土中砂顆粒在塌陷過程中的運(yùn)動學(xué)響應(yīng)特征,建立沙漏型巖溶地面塌陷的地質(zhì)模型。在此基礎(chǔ)上,概化出物理模型,并根據(jù)物質(zhì)守恒定律推演沙漏型塌陷的數(shù)學(xué)表達(dá)式。由此探討了沙漏型塌陷規(guī)模與巖溶和水文地質(zhì)條件的關(guān)系,認(rèn)為沙漏型塌陷歷時(shí)與砂性土的摩擦系數(shù)的平方、水力坡降的平方根及可溶巖洞徑的8/3次方根成反比,與塌陷坑深度的立方成正比。文章從地質(zhì)現(xiàn)象→地質(zhì)模型→物理模型→數(shù)學(xué)表達(dá)式來研究沙漏型巖溶地面塌陷,地質(zhì)理論依據(jù)充分,物理過程可靠,數(shù)學(xué)邏輯嚴(yán)密,所推導(dǎo)出的數(shù)學(xué)表達(dá)式較好地反映了沙漏型地面塌陷的基本規(guī)律。經(jīng)工程案例驗(yàn)證,該物理力學(xué)模型與實(shí)際情況較為吻合。
[Abstract]:On the basis of the author's theory of soil collapse, the geological phenomena, geological models, physical models and their mathematical expressions are emphatically studied on the basis of the authors' theory of soil collapse, and the kinematic response of sand particles in the process of collapse in the sand soil is especially based on the author's Theory of soil collapse. The geological model of the hourglass type karst ground collapse is established. On this basis, the physical model is generalized and the mathematical expression of the hourglass type collapse is deduced according to the law of conservation of material. The relationship between the scale of the hourglass type and the karst and the hydrogeological conditions is discussed, and the square of the friction coefficient of the hourglass type collapse and the sand soil is considered. The square root of the hydraulic gradient is inversely proportional to the 8/3 square root of the soluble rock hole, and it is directly proportional to the cube of the depth of the collapse pit. The article studies the hourglass karst ground subsidence from the geological phenomenon, the geological model, the physical model and the mathematical expression. The geological theory is sufficient, the physical process is reliable, the mathematical logic is strict, and the mathematical table derived is derived. The basic law of hourglass ground collapse is better reflected by the Da formula. The engineering case proves that the physical and mechanical model is in good agreement with the actual situation.
【作者單位】： 長江巖土工程總公司;
【基金】：武漢地鐵巖溶專題勘察項(xiàng)目
【分類號】：P642.26

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本文編號：1945097