【摘要】：斜井，是指從地面斜向通達(dá)地下巷道的井筒[1]。一般將小于30°傾角的斜井稱緩傾角斜井，大于或等于45°傾角的斜井稱陡傾角斜井[1]。本文中所指的高海拔陡深斜井，即是指海拔高程2635.017m～3223.000m，傾角60°，總長1266.743m，總高差587.983m，位于新疆喀什地區(qū)阿克陶縣境內(nèi)的布倫口—公格爾水電站引水隧洞高壓引水管道段。而本文重點研究的工程部位實為其中的采用自密實混凝土作為襯砌材料進(jìn)行澆筑施工的上斜井段。上斜井段中心線高程2951.500m～3223.000m，長327.598m，高差271.500m。 布侖口—公格爾水電站引水隧洞陡深斜井高壓管道段襯砌采用內(nèi)徑3m，厚16mm～48mm的壓力鋼管作為高壓引水管道內(nèi)襯，，鋼管外與開挖后的圍巖洞壁之間澆筑素混凝土[2]。澆筑的素混凝土原設(shè)計采用物理性能指標(biāo)為C20F300W6的二級配高性能混凝土，但在上平洞段的澆筑工作結(jié)束后，基于之前澆筑工作中所遇到的困難和問題，考慮到上斜井的長度更長，澆筑施工的難度會更大，施工的質(zhì)量更加不易保證以及施工速度會更加緩慢等的問題，經(jīng)研究分析，最終決定采用一級配自密實混凝土來取代二級配高性能混凝土完成上斜井段襯砌的混凝土澆筑工作。 布侖口—公格爾水電站陡傾角、長斜井采用不設(shè)置任何緩沖設(shè)施的溜管輸送，并突破常規(guī)，將分段長度加大到40m，112m甚至160m；通過合理地布置混凝土泵車和溜管，使連續(xù)澆筑成為可能，從而使斜井的澆筑能力達(dá)到了300m3/d～400m3/d，加快了施工速度、簡化了施工工序、降低了施工難度、提高了施工效率。 通過定性及定量地分析比較陡深斜井自密實混凝土襯砌與常規(guī)混凝土襯砌施工時的施工速度，計算兩者的材料成本單價、人工成本單價及綜合單價，突顯了自密實混凝土的優(yōu)越性，從而證明自密實混凝土在陡深斜井襯砌工程上的應(yīng)用具有重要意義。
[Abstract]:Inclined shaft refers to the shaft from the ground to the underground roadway [1]. The inclined well with less than 30 擄inclination is generally called the slowly inclined well, and the inclined well with 45 擄dip angle or equal to 45 擄angle is called the steep dip inclined well [1]. In this paper, the steep and deep inclined well at high altitude refers to 2635.017mt, 3223.000m, the inclination is 60 擄, the total length is 1266.743m, the total height difference is 587.983 m, the slope angle is 60 擄, the total length is 1266.743m, the total height difference is 587.983m. Located in Aktao County, Kashi area, Xinjiang, the high pressure diversion pipeline section of the diversion tunnel of Brunkow-Gongge Hydropower Station. The engineering site studied in this paper is the upper inclined well section which uses self-compacting concrete as lining material. The height of the center line of the upper inclined well is 2951.500 mg ~ (3223.000 m), the length is 327.598 m, and the height difference is 271.500 m. The lining of the high pressure pipeline section of the steep and deep inclined well of the water diversion tunnel of Boulenkou Gongge Hydropower Station adopts the inner diameter of 3 m, the pressure steel pipe of thick 16mm~48mm is used as the inner lining of the high pressure water diversion pipeline, and the plain concrete is poured between the outside of the pipe and the wall of the surrounding rock after excavation [2]. The primary design of plain concrete was designed with secondary high performance concrete with physical performance index of C20F300W6. However, after the pouring work of the section of Shangping Cave is finished, considering the difficulties and problems encountered in the previous pouring work, considering the length of the upper inclined shaft is longer, The problems of pouring construction will be more difficult, the quality of construction will be more difficult to guarantee and the construction speed will be slower. Finally, it is decided to replace the secondary high performance concrete with the first grade self-compacting concrete to finish the lining of the upper inclined shaft. The long inclined shaft is transported by pipe without any buffering facilities, and the length of section is increased to 40m ~ 112m or even 160m by breaking through the normal rule in the steep inclination angle of Brunkou-Gongger Hydropower Station. By reasonably arranging concrete pump cars and pipes, it is possible to make continuous pouring possible, so that the pouring capacity of inclined wells reaches 300 m3 / d, 400m3 / d, which speeds up the construction speed, simplifies the construction process, and reduces the difficulty of construction. The construction efficiency is improved. By qualitatively and quantitatively analyzing and comparing the construction speed of self-compacting concrete lining and conventional concrete lining in steep and deep inclined wells, the material cost unit price, labor cost unit price and comprehensive unit price are calculated. The superiority of self-compacting concrete is highlighted, and the application of self-compacting concrete in steep and deep inclined shaft lining engineering is proved to be of great significance.
【學(xué)位授予單位】：新疆農(nóng)業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TV431;TV554.14

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