译文:
湿喷混凝土 回填灌浆 配套TBM回填
引水隧洞施工不论是钻爆开挖,还是TBM掘进,喷锚支护、压力灌浆、溶洞回填、止水堵漏都是必不可少的工作环节,工作量也相当繁重。要确保工程质量和施工工期,应具有功能良好的回填施工设备。但施工实践表明,目前建筑机械生产企业向市场提供的注浆泵、喷射机设备,存在诸多弊端,不能xx满足施工实际需求。
DXHB-10型多功能细石混凝土泵的研制,克服了活塞式注浆泵、喷射机机理上的弊端,能够满足施工实际需要。该混凝土泵的创新点包括以下几方面:一是一机多用。该设备集注浆泵、喷射机的功能于一体,改造后可配套TBM掘进施工,加快施工进度。二是可灌注不同配比的高标号砂浆或细石混凝土,黏度范围广(80~320Pas),比灌注净浆成本低30%以上,凝固体强度高,取岩芯检测强度>40Pas,且匀质性能良好。而采用活塞式注浆泵无法达到如此效果。三是双液注浆混合均匀,堵漏止水效果好。该泵靠特制的压力混合阀完成连续供料,而不是活塞泵采用的球阀体开启关闭、间断供料性,避免了脉冲振动大、混合不均匀的问题。四是排量大,连续性强。单机工作能力在回填时比活塞泵工效高出3~5倍,是赶工期的得力设备,可全面降低施工成本。五是可全湿喷细石混凝土。喷速均匀密实,可掺入大量的塑性纤维(减少回弹,改善混凝土抗裂能力),回弹<10%,无污染、无粉尘,生产效率>10m3/t,达到了国际同类产品成品混凝土湿喷的水平。
DXHB-10型多功能细石混凝土泵已成功应用于以下工程:四川省雅安市丁村坝电站工程尾水洞施工,完成回填砂浆1900m3;引黄国际标1~3号洞施工,完成回填灌浆7000m3;引黄连接段国际标7号隧洞,完成回填砂浆8000m3;水布垭左岸防淘墙工程。
实践证明,先进、经济、实用的DXHB-10型多功能细石混凝土泵是地下隧洞钻爆开挖湿喷混凝土、回填灌浆和配套TBM掘进回填的得力设备。
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原文:
Wet shotcrete supporting TBM backfill Backfill grouting Diversion
Tunnel Construction Excavation of whether or TBM tunneling,
spray-anchor, pressure grouting, backfilling cave, sealing the work
of plugging are indispensable link in the workload is quite
heavy. To ensure project quality and construction period, should
have a well-functioning backfill construction equipment. But the
construction practice shows that the current construction machinery
manufacturing enterprises to the market injection pump, jet
equipment, there are many drawbacks and can not fully meet the
actual needs of the construction. DXHB-10 multifunction Fine Stone
Concrete Pump overcome piston injection pump, the drawbacks of the
jet mechanism to meet the actual needs of the construction. Of the
concrete pump's innovations include the following aspects: First, a
multi-purpose machines. The device variorum pump, jet functions in
one, transformation supporting TBM boring after construction, speed
up the construction progress. Second, can different combinations of
high-grade perfusion fine stone mortar or concrete, viscosity, a
wide range (80 ~ 320Pas), more than perfusion paste more than 30%
of low-cost, high strength solidified body, take core test
strength> 40Pas, and the uniform quality good performance. The
use of piston-type injection pump can not achieve such a result. 3
is a two-liquid mixing grouting, plugging sealing effect is good.
The pressure of the pump by a special mixing valves to complete a
continuous feed, rather than piston pumps used in open valve body
off, intermittent feeding, avoid the impulse vibration, mixed
uneven problems. Fourth, large displacement, continuous strong.
Stand-alone ability to work to backfill when the piston pump
ergonomics than 3 ~ 5 times higher than it is time for the duration
of the effective device that can reduce overall construction costs.
5 is a small stone could be all wet sprayed concrete. Uniform dense
spray-speed can be mixed with a large number of plastic fibers (to
reduce rebound, improving the ability of concrete cracking),
rebound "10%, no pollution, no dust, production efficiency> 10m3
/ t, to reach international similar products Finished Concrete
wet-spray levels. DXHB-10 multi-functional fine aggregate concrete
pump has been successfully applied to the following projects: the
small village of Pa Yaan City, Sichuan Province Hydropower Project tailrace tunnel construction,
the completion of backfilling mortar 1900m3; Yellow River and the
international standard 1 ~ 3 hole construction, the completion of
backfilling grouting 7000m3 ; Yellow River to connect the
international standard in paragraph 7 of tunnel, the completion of
backfilling mortar 8000m3; Shuibuya the left bank of anti-Amoy wall
works. Practice has proved that advanced, economical and practical
DXHB-10 multifunction Fine Stone Concrete Pump Excavation of the
underground tunnel of the wet spray concrete, backfill backfill
grouting and supporting the effective TBM tunneling equipment.
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