本文選題：富水砂層 + 凍結(jié)斜井��； 參考：《西安科技大學(xué)》2015年碩士論文

【摘要】：開展富水砂層凍結(jié)斜井凍結(jié)壁變形規(guī)律研究具有重要的工程應(yīng)用價值。本文以袁大灘凍結(jié)斜井工程為依托,采用理論分析、有限元模擬和現(xiàn)場實(shí)測的方法對穿越富水砂層凍結(jié)斜井凍結(jié)壁變形規(guī)律進(jìn)行研究。主要結(jié)論有:(1)將井筒分為淺埋和深埋兩種情況,分別采用巖柱法和普氏理論對斜井凍結(jié)壁厚度進(jìn)行設(shè)計,給出了在淺埋和深埋條件下斜井凍結(jié)壁計算公式,結(jié)合袁大灘凍結(jié)斜井工程現(xiàn)場實(shí)際情況,計算出袁大灘斜井凍結(jié)壁厚度:淺埋時凍結(jié)壁厚度分別為:頂板2.5m,兩幫1m,底板0.5m;深埋時凍結(jié)壁厚度分別為:頂板4.88m,兩幫3.6m,底板3.9m。(2)隨著凍結(jié)壁空頂距離的增大,凍結(jié)壁在水平向的位移呈“豎向”圓弧狀分布;凍結(jié)壁豎向位移由條帶狀分布逐漸變?yōu)椤八健眻A弧狀分布;對比有限元模擬和現(xiàn)場實(shí)測結(jié)果可知,富水砂層地區(qū)凍結(jié)斜井空頂距離為20m時,不僅能夠保證凍結(jié)壁的安全穩(wěn)定,還能減少施工循環(huán),達(dá)到快速施工的目的。(3)根據(jù)袁大灘凍結(jié)斜井工程現(xiàn)場實(shí)測結(jié)果可知,凍結(jié)壁下沉量有如下關(guān)系:頂板沉降右?guī)?/2拱處左幫1/2拱處,且頂板沉降速率最大;埋深越大頂板沉降越大,而且隨著迎頭面向前推進(jìn)凍結(jié)壁沉降速率也隨之增大。(4)井筒開挖后工作面溫度自下而上逐漸升高,過了中心點(diǎn)之后又逐漸降低,且開挖后工作面溫度呈現(xiàn)先降低后升高的趨勢。
[Abstract]:It is of great engineering application value to study the deformation law of frozen wall of frozen inclined well in water rich sand layer. Based on the frozen inclined shaft project of Yuan Da Tan, the deformation law of frozen wall of frozen inclined well crossing rich water sand layer is studied by means of theoretical analysis, finite element simulation and field measurement. The main conclusions are as follows: (1) the shaft is divided into shallow water. The thickness of the frozen wall of inclined well is designed by rock column method and prun theory, and the calculation formula of the freezing wall of inclined shaft in shallow and deep buried conditions is given. The frozen wall thickness of Yuanda beach is calculated by combining with the actual situation of the frozen inclined shaft in Yuanda beach. The thickness of the frozen wall of Yuanda beach is calculated in the shallow buried and deep buried conditions. The thickness of the frozen wall is 2.5m, respectively, when shallow buried. Two groups of 1m and floor 0.5m, the thickness of the frozen wall in deep buried is 4.88m, two 3.6m, and 3.9m. (2) in the floor, the horizontal displacement of the frozen wall is "vertical" circular arc, and the vertical displacement of the frozen wall is gradually changed from strip distribution to the "horizontal" circular arc, and the finite element simulation and the scene are compared. The measured results show that the air top distance of the frozen inclined shaft in the rich water sand layer is 20m, not only can ensure the safety and stability of the freezing wall, but also reduce the construction cycle and achieve the purpose of rapid construction. (3) according to the site measured results of the frozen slope project in Yuan Da beach, the settlement of the frozen wall has the following relation: the left side of the right side of the roof settlement at the right side of the 1/2 arch 1/2 The subsidence rate of the roof is the largest in the arch and the greater the depth of the roof, and the settlement rate of the frozen wall increases with the front facing forward. (4) the temperature of the working face increases gradually after the excavation of the shaft, and then gradually decreases after the center point, and the temperature of the working surface after the excavation decreases first and then then increases.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD325

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 楊更社;屈永龍;奚家米;;白堊系地層煤礦立井凍結(jié)壁的力學(xué)特性及溫度場研究[J];巖石力學(xué)與工程學(xué)報;2014年09期

2 王衍森;文凱;;深厚表土中凍結(jié)壁與井壁相互作用的數(shù)值分析[J];巖土工程學(xué)報;2014年06期

3 周盛全;陳海明;;白堊系地層深井凍結(jié)壁溫度場分布規(guī)律[J];冰川凍土;2013年05期

4 張文;;我國凍結(jié)法鑿井技術(shù)的現(xiàn)狀與成就[J];建井技術(shù);2012年03期

5 耿萍;晏啟祥;何川;汪波;;隧道水平凍結(jié)施工過程的數(shù)值模擬[J];工程力學(xué);2010年05期

6 崔廣心;;深厚表土中圓筒形凍結(jié)壁和井壁的力學(xué)分析[J];煤炭科學(xué)技術(shù);2008年10期

7 陳朝暉;;凍結(jié)鑿井技術(shù)研究進(jìn)展與存在的問題[J];建井技術(shù);2007年03期

8 王衍森;黃家會;楊維好;任彥龍;宋雷;;特厚沖積層中凍結(jié)井外壁溫度實(shí)測研究[J];中國礦業(yè)大學(xué)學(xué)報;2006年04期

9 李方政,樓根達(dá),余志松,李小軍;基于蠕變效應(yīng)的穿越隧道凍結(jié)帷幕開挖與支護(hù)三維數(shù)值模擬[J];巖土力學(xué);2005年S1期

10 張開順,李炳勝,楊維好,王衍森,宋雷;井筒凍結(jié)壁徑向位移規(guī)律計算研究[J];中國煤炭;2005年11期

，

本文編號：2092601