本文關(guān)鍵詞： 順槽底板 加筋格室 填充材料 承載力 快速硬化　出處：《西安科技大學》2014年碩士論文　論文類型：學位論文

【摘要】：針對采煤工作面順槽底板采用傳統(tǒng)的普通混凝土硬化方式普遍存在施工速度慢、運輸量大、成本高，混凝土硬化質(zhì)量差以及底板路面在使用過程中破壞后維修難的問題，開展順槽底板快速硬化技術(shù)的相關(guān)研究，主要工作和結(jié)論有： （1）在分析采煤工作面順槽底板特征、硬化存在的問題及硬化技術(shù)要求的基礎(chǔ)上，通過對目前國內(nèi)外格室加筋、柔性混凝土及碾壓混凝土等關(guān)鍵技術(shù)的研究，結(jié)合塊體路面的結(jié)構(gòu)設計方法，提出加筋格室及內(nèi)部填充材料組成的順槽底板路面的結(jié)構(gòu)形式。 （2）格室加筋碾壓混凝土復合路面的承載機理與與傳統(tǒng)水泥混凝土路面主要依靠路面板抗彎強度承載和瀝青混凝土路面主要靠基層承載有本質(zhì)區(qū)別，，其路面結(jié)構(gòu)的承載機理是通過塊體之間的拱效應、接縫的剪切特性來實現(xiàn)荷載的擴散，提高路面的抗剪強度及變形適應的能力。 （3）通過對不同類型的加筋格室的力學特性及加固作用機理（側(cè)向約束作用、摩擦作用、網(wǎng)兜效應）分析，指出其力學特性與其結(jié)構(gòu)有關(guān)，焊距越小、高度越高、結(jié)構(gòu)層強度越高，其側(cè)向約束力越大，側(cè)壁摩擦力也越大，網(wǎng)兜效應及加筋效果越好。 （4）試驗研究確定了滿足各項性能要求的填充材料配合比。通過單體加筋格室充填體及加筋格室充填結(jié)構(gòu)體承載板力學變形試驗研究，進一步驗證了由于加筋格室的作用，在充填材料強度較低、路面厚度較小情況下其結(jié)構(gòu)仍具有較高的承載力和適應較大變形能力且擴散到基層及周圍的應力很小的路面承載機理。 （5）地面工業(yè)性模擬試驗表明：各工序的銜接良好，施工速度比傳統(tǒng)的提高4倍以上，承載力滿足使用性能，在顯著降低綜合成本的同時且具有明顯的社會效益，有較強的推廣應用前景。
[Abstract]:In view of the problems of low construction speed, large transportation volume, high cost, poor concrete hardening quality and difficult maintenance after the destruction of the floor pavement in the process of use, the traditional common concrete hardening method used in the coal mining face along the trough floor is generally existed. The main work and conclusions are as follows:. 1) on the basis of analyzing the characteristics, problems existing in hardening and the technical requirements of hardening, the key technologies of reinforcement, flexible concrete and roller compacted concrete at home and abroad are studied. Combined with the structural design method of block pavement, the structure form of reinforced latticed chamber and inner filling material pavement with slotted bottom slab is put forward. (2) the bearing mechanism of reinforced RCC composite pavement is essentially different from that of the traditional cement concrete pavement which mainly depends on the flexural strength of the pavement face slab and the asphalt concrete pavement mainly depends on the base course. The load-bearing mechanism of pavement structure is to achieve load diffusion through arch effect between blocks and shear characteristics of joints to improve the shear strength and deformation adaptability of pavement. 3) by analyzing the mechanical properties and reinforcement mechanism (lateral restraint, friction, netting effect) of different types of reinforced latticed chambers, it is pointed out that the mechanical properties are related to its structure, and the smaller the welding distance, the higher the height. The higher the strength of the structure layer is, the greater the lateral binding force is, and the greater the friction force of the lateral wall is, the better the effect of netting and reinforcement is. (4) the experimental study determines the proportion of filling materials that meet the requirements of various properties. Through the experimental study on the bearing plate deformation of the single reinforced lattice filling body and the reinforced latticed filling structure body, it is further verified that because of the effect of the reinforced latticed chamber, When the strength of filling material is low and the thickness of pavement is small, the pavement structure still has higher bearing capacity and less stress diffusion to the base course and the surrounding pavement, which can adapt to large deformation capacity. 5) the ground industrial simulation test shows that the construction speed is more than 4 times higher than that of the traditional one, and the bearing capacity can meet the use performance, which can significantly reduce the comprehensive cost and have obvious social benefits. It has a strong prospect of popularization and application.
【學位授予單位】：西安科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U416.2;TD82

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