【摘要】：掘進(jìn)工作面頂板冒落一直是煤礦安全生產(chǎn)的重大問題之一。造成這一現(xiàn)象的原因多種多樣,最根本的還是在于目前煤礦掘進(jìn)工作面臨時(shí)支護(hù)方式難以適應(yīng)煤礦安全高效掘進(jìn)需要。在此背景下,眾多臨時(shí)支護(hù)設(shè)備、方案被提出并在掘進(jìn)工作面得到運(yùn)用。然而,目前國(guó)內(nèi)對(duì)巷道臨時(shí)支架的研究主要側(cè)重于支架結(jié)構(gòu)性能,產(chǎn)品設(shè)計(jì)偏重于經(jīng)驗(yàn)設(shè)計(jì),沒有對(duì)支護(hù)設(shè)備與頂板的耦合力學(xué)問題進(jìn)行系統(tǒng)研究,這就使設(shè)備從設(shè)計(jì)階段就具有盲目性,設(shè)計(jì)出的產(chǎn)品是否滿足頂板的支護(hù)需求要在現(xiàn)場(chǎng)應(yīng)用一段時(shí)間后才能明確。針對(duì)這個(gè)問題,本文依托國(guó)家自然科學(xué)基金項(xiàng)目“邁步式超前支護(hù)裝備與掘進(jìn)迎頭頂板動(dòng)力耦合機(jī)理研究(編號(hào)：51304107)”,對(duì)超前支護(hù)裝備-頂板耦合系統(tǒng)力學(xué)問題進(jìn)行研究。依據(jù)超前支護(hù)裝備設(shè)備參數(shù),建立超前支護(hù)裝備-頂板體系力學(xué)分析模型。利用理論力學(xué)、材料力學(xué)相關(guān)理論對(duì)超前支護(hù)裝備進(jìn)行靜力學(xué)建模,利用有限差分理論對(duì)頂板(這里假設(shè)頂板為薄板)進(jìn)行靜力學(xué)建模�；谧冃螀f(xié)調(diào)原理求解出超前支護(hù)裝備及頂板在頂板受均布載荷、邊界條件為“三邊固支,一邊簡(jiǎn)支”情況下的變形量；基于有限元理論,將超前支護(hù)裝備立柱視作桿單元,橫縱梁視作梁?jiǎn)卧?橫縱梁接觸處、橫梁與立柱接觸處及縱梁與頂板接觸處視作彈簧阻尼單元,將頂板(薄板)離散成有限個(gè)板元。根據(jù)能量理論,對(duì)超前支護(hù)裝備-頂板體系進(jìn)行基于能量理論的動(dòng)力學(xué)建模,得到超前支護(hù)裝備-頂板體系振動(dòng)控制方程；利用凝聚技術(shù)縮減有限元?jiǎng)恿δＰ偷淖杂啥葦?shù),利用Wilson-β法對(duì)動(dòng)力響應(yīng)進(jìn)行數(shù)值求解;基于ANSYS有限元分析軟件建立超前支護(hù)裝備-頂板體系仿真模型,模擬“三邊固支,一邊簡(jiǎn)支”頂板受均布載荷時(shí),頂板及超前支護(hù)裝備應(yīng)力狀態(tài)、變形狀態(tài)。研究頂板-超前支護(hù)裝備多點(diǎn)分布接觸及全接觸態(tài)單組支撐靜力學(xué)響應(yīng)；基于ANSYS軟件動(dòng)力學(xué)有限元分析模塊建立超前支護(hù)裝備-頂板體系動(dòng)力學(xué)仿真模型,模擬超前支護(hù)裝備底座受礦震荷載時(shí)超前支護(hù)裝備-頂板體系動(dòng)態(tài)響應(yīng)。對(duì)超前支護(hù)裝備、頂板分別進(jìn)行模態(tài)分析,找出固有頻率及振型,為超前支護(hù)裝備防共振設(shè)計(jì)提供依據(jù)。
[Abstract]:Roof caving is one of the most important problems in coal mine safety production. There are many reasons for this phenomenon, the most fundamental reason is that the temporary support mode of coal mining face is difficult to meet the needs of coal mine safety and efficient tunneling. In this context, a number of temporary support equipment, the scheme was put forward and applied in the heading face. However, at present, the domestic research on the temporary support of roadway is mainly focused on the performance of the support structure, the product design is focused on the empirical design, and there is no systematic study on the coupling mechanics between the supporting equipment and the roof. This makes the equipment from the design stage of blindness, whether the product designed to meet the roof support needs must be applied in the field for a period of time before it can be clear. In order to solve this problem, this paper, relying on the project of National Natural Science Foundation of China "Research on dynamic Coupling Mechanism of Step-forward supporting equipment and head-on Roof (No.: 51304107)", studies the mechanical problems of the coupling system of advanced support equipment and roof. According to the equipment parameters of advanced support equipment, the mechanical analysis model of advance support equipment-roof system is established. The statics modeling of advanced support equipment is carried out by using the theory of theoretical mechanics and material mechanics, and the statics model of roof (which is assumed to be a thin plate) by the finite difference theory. Based on the principle of deformation coordination, the deformation of advance support equipment and roof under uniform load on roof is solved, and the boundary condition is "triangularly fixed support, one side simply supported". Based on the finite element theory, the pillar of advanced support equipment is regarded as a bar element. The transverse beam is regarded as the element of the beam, the contact of the transverse beam, the contact between the beam and the column, and the contact between the longitudinal beam and the roof is regarded as the spring damping element, and the roof (thin plate) is discretized into finite plate elements. According to the energy theory, the dynamic modeling based on energy theory is carried out on the advanced support equipment-roof system, and the vibration control equation of the lead-support equipment-roof system is obtained, and the number of degrees of freedom of the finite element dynamic model is reduced by the condensation technique. The dynamic response is solved numerically by using Wilson- 尾 method, and the simulation model of advance support equipment roof system is established based on ANSYS finite element analysis software. Roof and advance support equipment stress state, deformation state. In this paper, the multi-point distributed contact and full contact static response of single support in roof advance support equipment are studied, and the dynamic simulation model of advance support equipment roof system is established based on ANSYS software dynamics finite element analysis module. The dynamic response of the roof system is simulated when the base of the advanced support equipment is subjected to mine earthquake. The modal analysis is carried out to find out the natural frequency and vibration pattern of the advanced support equipment and roof respectively, which provides the basis for the design of the antiresonance of the advanced support equipment.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD355

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 袁士豪;殷晨波;劉世豪;;機(jī)械負(fù)載敏感定量泵系統(tǒng)性能分析[J];農(nóng)業(yè)工程學(xué)報(bào);2013年13期

2 謝獻(xiàn)忠;黃志剛;陳文新;易偉建;;基于峰頻帶通信號(hào)HHT變換的框架結(jié)構(gòu)試驗(yàn)?zāi)B(tài)分析[J];工程力學(xué);2012年05期

3 孫淑娟;王琳;張敦福;王漢鵬;;深部巷道開挖過程中圍巖體的時(shí)程響應(yīng)分析[J];煤炭學(xué)報(bào);2011年05期

4 袁亮;薛俊華;劉泉聲;劉濱;;煤礦深部巖巷圍巖控制理論與支護(hù)技術(shù)[J];煤炭學(xué)報(bào);2011年04期

5 陳加勝;高明中;;快速掘進(jìn)配套臨時(shí)支護(hù)液壓支架設(shè)計(jì)[J];煤礦機(jī)械;2011年02期

6 曹安業(yè);范軍;牟宗龍;郭曉強(qiáng);;礦震動(dòng)載對(duì)圍巖的沖擊破壞效應(yīng)[J];煤炭學(xué)報(bào);2010年12期

7 康紅普;王金華;林健;;煤礦巷道支護(hù)技術(shù)的研究與應(yīng)用[J];煤炭學(xué)報(bào);2010年11期

8 王東;段克信;郭麗麗;;復(fù)合頂板巷道圍巖變形與破壞特征數(shù)值模擬[J];遼寧工程技術(shù)大學(xué)學(xué)報(bào)(自然科學(xué)版);2009年S2期

9 欒麗君;任金萍;張博;;自移式掘進(jìn)機(jī)輔助支護(hù)設(shè)備關(guān)鍵部件的常規(guī)力學(xué)分析[J];煤礦機(jī)械;2009年08期

10 王炎;胡軍科;楊波;;負(fù)載敏感泵的動(dòng)態(tài)特性分析與仿真研究[J];現(xiàn)代制造工程;2008年12期

，

本文編號(hào)：2244713