本文選題：瓦斯爆炸 + 可移動(dòng)式救生艙�。� 參考：《遼寧工程技術(shù)大學(xué)》2013年碩士論文

【摘要】：在我國(guó)大部分礦井中，瓦斯煤塵爆炸、頂板坍塌、水災(zāi)、火災(zāi)等事故的發(fā)生率非常高，不僅造成了嚴(yán)重的經(jīng)濟(jì)損失，還導(dǎo)致大量的人員傷亡。因此，世界各國(guó)都在大力研制井下救生艙，為事故發(fā)生時(shí)來(lái)不及撤離的工作人員提供安全的避險(xiǎn)空間。 救生艙能夠抵御外界的爆炸沖擊，還能為被困人員提供水、食物和氧氣，隔絕和去除有毒有害氣體，為被困人員提供良好的生存環(huán)境，使其獲得一定的生存時(shí)間。在避險(xiǎn)的同時(shí)，被困人員還可以通過(guò)艙內(nèi)的通訊設(shè)施，為外界救援指明方向。因此，救生艙的抗爆性能就顯得至關(guān)重要。 本項(xiàng)目通過(guò)分析國(guó)內(nèi)外相關(guān)文獻(xiàn)，針對(duì)礦用可移動(dòng)式救生艙，利用ANSYS和LS-DYNA軟件建立礦用可移動(dòng)式救生艙殼體三維有限元模型。模擬了等效三角波爆炸沖擊荷載作用下礦用可移動(dòng)式救生艙殼體的動(dòng)態(tài)響應(yīng)。通過(guò)以上數(shù)值模擬，確定救生艙殼體動(dòng)態(tài)承載能力和變形模式，給出瓦斯/瓦斯煤塵爆炸超壓與救生艙承載能力和變形模式的變化規(guī)律。根據(jù)分析結(jié)果，對(duì)救生艙的結(jié)構(gòu)進(jìn)行了優(yōu)化分析，為救生艙設(shè)計(jì)、抗沖擊能力的評(píng)價(jià)提供理論指導(dǎo)和依據(jù)。 通過(guò)對(duì)救生艙殼體的動(dòng)態(tài)分析，可以判斷該救生艙結(jié)構(gòu)能承受峰值超壓為正門(mén)0.6MPa、其他面0.3MPa、作用時(shí)間為300ms的沖擊荷載作用，，結(jié)構(gòu)強(qiáng)度滿足要求，剛度也滿足位移要求。通過(guò)結(jié)構(gòu)優(yōu)化，在強(qiáng)度和剛度滿足要求的條件下，節(jié)省了材料和成本。
[Abstract]:In most mines in China, the incidence of gas and coal dust explosion, roof collapse, flood, fire and other accidents is very high, not only caused serious economic losses, but also caused a large number of casualties. Therefore, countries all over the world are making great efforts to develop underground lifebuoys to provide safe haven space for workers who have no time to evacuate when accidents occur. The lifebuoy can resist the impact of explosion, provide water, food and oxygen to the trapped personnel, isolate and remove the poisonous and harmful gases, and provide a good living environment for the trapped persons, so that they can obtain a certain survival time. At the same time, trapped people can also through the cabin communication facilities, for outside rescue direction. Therefore, the anti-explosion performance of the capsule is very important. Based on the analysis of domestic and foreign literatures, the 3D finite element model of mine movable lifebuoy shell is established by using ANSYS and LS-DYNA software. The dynamic response of mine movable lifebuoy shell under the equivalent triangular wave blast impact load is simulated. Based on the above numerical simulation, the dynamic load carrying capacity and deformation mode of the lifebuoy shell are determined, and the variation law of the gas / gas coal dust explosion overpressure and the load bearing capacity and deformation mode of the capsule are given. According to the analysis results, the structure of the lifebuoy is optimized and analyzed, which provides theoretical guidance and basis for the design and evaluation of the impact resistance of the lifebuoy. Through the dynamic analysis of the lifebuoy shell, it can be judged that the lifebuoy structure can withstand the peak overpressure of 0.6 MPa at the front door and 0.3 MPa on the other surfaces. The action time is the impact load of 300ms, the structural strength meets the requirements and the stiffness meets the displacement requirement. Through structural optimization, the material and cost are saved under the condition that strength and stiffness meet the requirement.
【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】：2013
【分類號(hào)】：TD774

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