本文選題：巖質(zhì)邊坡 + 鐵尾礦��； 參考：《華北理工大學(xué)》2015年碩士論文

【摘要】：隨著礦業(yè)的飛速發(fā)展,特別是礦山開采的進(jìn)行,產(chǎn)生了大量的巖質(zhì)邊坡,嚴(yán)重破壞了原地貌土壤植被系統(tǒng)的生態(tài)平衡。巖質(zhì)邊坡生態(tài)重建技術(shù)現(xiàn)已應(yīng)用于我國裸露巖質(zhì)邊坡的生態(tài)護(hù)坡當(dāng)中,但由于成本高、基質(zhì)材料匱乏等原因,阻礙了該技術(shù)在礦山巖質(zhì)邊坡生態(tài)恢復(fù)中的應(yīng)用。該研究以鐵尾礦、秸稈、蘑菇渣、糠醛渣等固體廢棄物以及425#普通硅酸鹽水泥、保水劑、有機肥、粘合劑等作為配制護(hù)坡綠化基質(zhì)的基本材料。采用正交設(shè)計方法,選定水泥、秸稈、蘑菇渣、粘合劑對基質(zhì)力學(xué)性能影響較大的四因素,進(jìn)行基質(zhì)的容重、含水率、吸水率、水分蒸發(fā)率及水穩(wěn)定性的研究,并通過無側(cè)限抗壓及直接剪切試驗,研究各基質(zhì)含量及齡期對基質(zhì)試樣的無側(cè)限抗壓強度、抗剪強度指標(biāo)的影響。結(jié)合植物生長試驗與物理力學(xué)特性試驗,得出兩種最佳基質(zhì)配比,通過根系加筋理論等理論分析,并進(jìn)行根土復(fù)合體的剪切試驗。研究表明以鐵尾礦及秸稈等固體廢棄物為主要原材料配制巖質(zhì)邊坡生態(tài)重建基質(zhì)是可行的,最終得出基質(zhì)的最優(yōu)配比為:表層基質(zhì)(2~3cm)配比為水泥10%、秸稈2%、蘑菇渣2%、粘合劑0.6%、有機肥2%、保水劑0.1%、糠醛渣2.5%;底層基質(zhì)(7~8cm)配比為水泥12%、秸稈2%、蘑菇渣1%、粘合劑0.8%、有機肥2%、保水劑0.1%,糠醛渣3%(全部為基質(zhì)所占鐵尾礦的百分含量)。從原材料出發(fā),節(jié)約了成本,給礦山帶來很好的經(jīng)濟效益和生態(tài)效益。
[Abstract]:With the rapid development of mining, especially the development of mining, a large number of rock slopes are produced, which seriously destroy the ecological balance of the original landform soil vegetation system. The ecological reconstruction technology of rock slope has been applied to the ecological protection of bare rock slope in China. However, due to the high cost and lack of matrix materials, the application of the technology in ecological restoration of mine rock slope has been hindered. In this study, iron tailings, straw, mushroom residue, furfural slag and 425# ordinary Portland cement, water-retaining agent, organic fertilizer and binder were used as the basic materials for the preparation of slope greening matrix. The orthogonal design method was used to study the bulk density, moisture content, water absorption, water evaporation rate and water stability of the matrix, which had a great influence on the mechanical properties of the matrix, such as cement, straw, mushroom residue and binder. The influence of the content and age of the matrix on the unconfined compressive strength and shear strength of the matrix sample was studied by the unconfined compression test and direct shear test. Combined with plant growth test and physical and mechanical property test, the optimum ratio of two substrates was obtained. The theoretical analysis of root reinforcement theory was carried out, and the shear test of root-soil complex was carried out. The study shows that it is feasible to use solid wastes such as iron tailings and straw as the main raw materials to prepare the ecological reconstruction matrix of rock slope. Finally, the optimum ratio of the matrix is: cement 10, straw 2, mushroom residue 2, binder 0.6, organic fertilizer 2, water retaining agent 0.1, furfural slag 2.5; bottom matrix 7 ~ 8 cm) cement 12, straw 2, mushroom residue 1, adhesive 0.880. Machine fertilizer 2, water absorbent 0.1, furfural slag 3% (all matrix occupied by iron tailings). Starting from the raw materials, the cost is saved and good economic and ecological benefits are brought to the mine.
【學(xué)位授予單位】：華北理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD88;TD31

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本文編號：1924322