【摘要】：為了解決井下密閉墻構(gòu)筑工程量大、勞動強度高、后期出現(xiàn)裂隙形成漏風(fēng)通道、引起采空區(qū)浮煤自燃等問題,提出了井下密閉墻快速構(gòu)筑方法;論證了粉煤灰作為骨料充填構(gòu)筑密閉墻的可行性;實驗測試了密閉墻充填材料配比及固化特性,得出了不同配比情況下充填材料的膠凝時間、流動性、抗壓強度等,最終確定適于井下密閉墻快速構(gòu)筑的最佳材料配比。以云岡煤礦8617工作面作為實例,研究了密閉墻快速構(gòu)筑裝備及工藝過程,并檢驗了密閉墻質(zhì)量,達(dá)到了預(yù)期標(biāo)準(zhǔn)。
[Abstract]:In order to solve the problems of large amount of construction, high labor intensity, air leakage channel formed by cracks and spontaneous combustion of floating coal in goaf, a rapid construction method of underground closed wall is put forward in order to solve the problems. The feasibility of building a closed wall with fly ash as aggregate filling is demonstrated, the ratio and solidification characteristics of the filling material are tested experimentally, and the cementing time, fluidity and compressive strength of the filling material under different ratios are obtained. Finally, the best proportion of materials suitable for rapid construction of underground closed wall is determined. Taking 8617 working face of Yungang Coal Mine as an example, the rapid construction equipment and process of closed wall are studied, and the quality of closed wall is tested, which reaches the expected standard.
【作者單位】： 西安科技大學(xué)西部礦井開采及災(zāi)害防治教育部重點實驗室;西安科技大學(xué)能源學(xué)院;四川省煤炭產(chǎn)業(yè)集團(tuán)有限責(zé)任公司;
【基金】：國家自然科學(xué)基金資助項目(51004081) 國家自然基金重點項目(51134019) 中國博士后科學(xué)基金(2014M552466)
【分類號】：TD75

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