裂隙巖體泥漿流動(dòng)細(xì)觀分析與承壓巖溶泥水突出試驗(yàn)研究
[Abstract]:Taking red clay, which is common in southern China, as test material, the influencing factors of mud flow in fissured rock mass are analyzed theoretically, and the main means are mud viscosity test and mud water outburst physical test. Combined with numerical analysis, the effects of particle size and moisture content on the viscosity of mud are discussed, and the flow law of mud in mud passage under the action of water pressure is discussed. The characteristics of mud discharge after mud inrush and the law that it takes time to inrush mud under different water pressure are of great significance for deeply understanding the law and mechanism of mud inrush in Karst area and for preventing and controlling mud outburst disaster. The main conclusions are as follows: (1) mud viscosity, crack roughness, The stress state and osmotic pressure of the fracture rock mass will affect the flow characteristics of mud in the fracture rock mass. (2) it is found that very few particles enter the fracture when the water head is first applied. (2) using PFC to carry on the mesoscopic analysis, it is found that very few particles enter the fracture when the water head is first applied. Most of the particles move to the middle of the model, and there is a vortex phenomenon at the corner of the model. With the increase of the running time of the model, the flow direction of the particles will change to a certain extent, the vortex will disappear, the flow direction of the particles at the corner will point to the crack, and the other particles will flow along the vertical direction. It is also found that the velocity and pressure gradient of particles in cracks are not completely positive proportional, that is, they are not consistent with Darcy's law. It is similar to a kind of "S" curve. (3) the mud viscosity test with NDJ-8S shows that the change of mud viscosity is only related to moisture content and independent of particle size. With the increase of moisture content, the viscosity of mud decreases rapidly and slowly, and tends to be stable in three stages. After reaching the stable stage, the viscosity of mud is about equal to the viscosity of pure water 5.46mpa 路s. At the same time, it is found that the relationship between mud viscosity and water content is approximately exponential function. (4) based on the self-developed "pressure cave mud water outburst test instrument", a series of Karst physical mud outburst tests are carried out. It is found that the mud burst can generally be divided into four stages. There is a time delay outburst phenomenon. The nonlinear relationship between mud water pressure gradient and velocity after Karst mud outburst is discussed through the analysis of experimental data.
【學(xué)位授予單位】:湖南科技大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:TD315
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 崔峰;來(lái)興平;曹建濤;單鵬飛;;急傾斜煤層水平分段綜放面開采擾動(dòng)影響分析[J];采礦與安全工程學(xué)報(bào);2015年04期
2 吳迪;周順華;李堯臣;;飽和砂土中泥漿滲透的變形-滲流-擴(kuò)散耦合計(jì)算模型[J];力學(xué)學(xué)報(bào);2015年06期
3 王環(huán)玲;徐衛(wèi)亞;左婧;邵建富;賈朝軍;;低滲透巖石滲透率與孔隙率演化規(guī)律的氣滲試驗(yàn)研究[J];水利學(xué)報(bào);2015年02期
4 趙延林;張盛國(guó);萬(wàn)文;王衛(wèi)軍;蔡璐;彭青陽(yáng);;基于流態(tài)轉(zhuǎn)換理論巷道前伏溶洞突水的流固耦合 強(qiáng)度折減法分析[J];巖石力學(xué)與工程學(xué)報(bào);2014年09期
5 林承華;尹術(shù)軍;;盤嶺公路隧道涌水突泥治理措施[J];交通科技;2014年02期
6 劉欽;李術(shù)才;李煜航;張立豐;;龍?zhí)端淼繤_2斷層處涌水突泥機(jī)理及治理研究[J];地下空間與工程學(xué)報(bào);2013年06期
7 趙延林;萬(wàn)文;王衛(wèi)軍;王敏;彭青陽(yáng);;類巖石材料有序多裂紋體單軸壓縮破斷試驗(yàn)與翼形斷裂數(shù)值模擬[J];巖土工程學(xué)報(bào);2013年11期
8 楊金保;馮夏庭;潘鵬志;;考慮應(yīng)力歷史的巖石單裂隙滲流特性試驗(yàn)研究[J];巖土力學(xué);2013年06期
9 李利平;李術(shù)才;李樹忱;馮現(xiàn)大;李國(guó)瑩;劉斌;王靜;許振浩;;松散承壓含水層下采煤的流固耦合模型試驗(yàn)與數(shù)值分析研究[J];巖土工程學(xué)報(bào);2013年04期
10 王媛;陸宇光;倪小東;李冬田;;深埋隧洞開挖過(guò)程中突水與突泥的機(jī)理研究[J];水利學(xué)報(bào);2011年05期
相關(guān)會(huì)議論文 前1條
1 熊厚金;林進(jìn)和;蔣開貴;;南嶺隧道石灰?guī)r溶大突泥化學(xué)灌漿實(shí)例[A];中國(guó)錨固與注漿工程實(shí)錄選[C];1995年
相關(guān)博士學(xué)位論文 前7條
1 周宗青;隧道充填型致災(zāi)構(gòu)造突水突泥災(zāi)變演化機(jī)理及工程應(yīng)用[D];山東大學(xué);2016年
2 莫陽(yáng)春;高水壓充填型巖溶隧道穩(wěn)定性研究[D];西南交通大學(xué);2009年
3 李利平;高風(fēng)險(xiǎn)巖溶隧道突水災(zāi)變演化機(jī)理及其應(yīng)用研究[D];山東大學(xué);2009年
4 汪成兵;軟弱破碎隧道圍巖漸進(jìn)性破壞機(jī)理研究[D];同濟(jì)大學(xué);2007年
5 張剛;管涌現(xiàn)象細(xì)觀機(jī)理的模型試驗(yàn)與顆粒流數(shù)值模擬研究[D];同濟(jì)大學(xué);2007年
6 莊寧;裂隙巖體滲流應(yīng)力耦合狀態(tài)下裂紋擴(kuò)展機(jī)制及其模型研究[D];同濟(jì)大學(xué);2007年
7 謝興華;巖體水力劈裂機(jī)理試驗(yàn)及數(shù)值模擬研究[D];河海大學(xué);2004年
相關(guān)碩士學(xué)位論文 前7條
1 翁賢杰;富水?dāng)鄬悠扑閹淼劳凰荒鄼C(jī)理及注漿治理技術(shù)研究[D];山東大學(xué);2014年
2 吳川;隧洞施工突水突泥機(jī)理及影響因素研究[D];西南交通大學(xué);2013年
3 李森森;嶺腳隧道斷層破碎帶涌水突泥地質(zhì)災(zāi)害處治技術(shù)研究[D];長(zhǎng)安大學(xué);2013年
4 郭敬中;承壓巖溶水上采煤底板突水機(jī)理探討[D];安徽理工大學(xué);2012年
5 白若虛;基于地下水劈裂的基坑突涌破壞機(jī)理研究與顆粒流數(shù)值模擬[D];天津大學(xué);2012年
6 梁艇棟;某巷道巖溶突泥體注漿室內(nèi)試驗(yàn)研究[D];昆明理工大學(xué);2007年
7 曹笑顰;盛洪卿隧道巖溶影響研究[D];華中科技大學(xué);2006年
,本文編號(hào):2493409
本文鏈接:http://sikaile.net/kejilunwen/kuangye/2493409.html