Category: 网络研讨会

The Green Alternative: Small Hydro Machines for Clean Energy

When you’re faced with a hard rock tunnel on your next small hydro project, which tunneling method works best? Intake tunnels can be at diameters as small as 2 meters and at steep grades of up to 45 degrees.  Compared with the conventionally used method of Drill & Blast, small diameter tunneling machines offer increased production rates and reduction in cross section, among other benefits. The uniquely designed machines are engineered to take on steep gradients, and can bore tunnels kilometers long with minimal impacts to the surrounding environment.

In this complimentary, 60-minute webinar we’ll discuss the use of small diameter tunneling machines on projects throughout Norway, where their popularity is increasing, as well as the method’s suitability on projects worldwide. Listen in on our conversation with Robbins Norway General Manager and Civil Engineer Sindre Log as we discuss recommendations for small hydro tunnels in hard rock.  Join us for a live Q&A session at the end to get a thorough answer from our expert speaker.

This unique webinar, in conjunction with International Water Power & Dam Construction, is complimentary for a limited number of registrants. Register now to secure your spot.

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To Grout or Not to Grout?

When you’re faced with a hard rock tunnel where there are expected significant sections under high water pressure, which tunneling method do you choose?

While Slurry Shield tunneling has a long history of addressing this problem, this method has not always been problem free. Another highly effective method exists that can lower costs and risks: Non-continuous Pressurized (NCP) TBM Tunneling with a shielded machine.  When used in rock with a comprehensive grouting program or sequential advance in EPB mode, NCP TBMs have proven that they can successfully navigate high water pressures safely and effectively.

In this complimentary, 45 minute webinar we debate the pros and cons of Slurry and NCP TBMs, and look at case studies of both types of machines in hard rock under high water pressures.  Listen in on our conversation with Robbins President Lok Home and Brad Grothen P.E., Robbins Technical Director, as we discuss recommendations and the future of tunneling in rock under water pressure.

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TBM Tunneling in Karst Conditions

France’s recently completed Galerie des Janots was the scene of some unforeseen challenges.  During excavation with a Main Beam TBM, crews encountered a stalagmite studded 8,000 cubic meter cavern, and also a 4,500 cubic meter cavity directly under the bore path. In addition to the two large and uncharted caverns, there were also karst cavities of a multitude of sizes found throughout boring. What exactly did the crew do to beat the odds and power through?

For the answer, be sure to listen in as Detlef Jordan, Robbins Sales Manager Europe, goes into detail about the obstacles, lessons learned, and recommendations for future tunnels in karst conditions.

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Boring Through 48 Fault Zones and 26 Bar Pressure

Difficult ground doesn’t begin to describe the challenges overcome at a recent tunnel in central Turkey. The breakthrough of a 5.5 m diameter Robbins Crossover XRE TBM at the Gerede Water Transmission Tunnel was a feat of modern construction. The 9 km leg was the final section of the 31.6 km long water supply line bored through what is widely considered to be Turkey’s most challenging geology: from 48 fault zones to water pressures up to 26 bar, the ground put the machine and the crew to the test.

Listen in on the conversation with Robbins Vice President Doug Harding as we find out how the unique TBM design and experienced crew overcame a gamut of challenges.

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Over 1,200 Meters per Month in Himalayan Geology

Nepal’s first TBM-driven tunnel was a success by any standard: The Robbins Double Shield machine bored up to 1,200 meters a month and finished the Bheri Babai Diversion Multipurpose Project nearly a year early. But how were crews able to bore so quickly? And what made the contractor and owner ultimately decide to use a TBM for the first time?

Watch our complimentary 30-minute webinar with Brad Grothen P.E., Robbins Technical Director, and Missy Isaman P.E., Robbins Project Engineer, as we discuss the challenges, lessons learned, and recommendations for future tunnels in mountainous geology.

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Big Data: Innovative Technology to make TBM Tunneling more Efficient

Modern TBMs are data-driven systems, from ground investigation tools ahead of the machine to touch-screen technology in operator’s cabins, to integration with programs on the surface. Today’s TBMs, paired with cutting-edge data collection and monitoring, can efficiently bore in even the most demanding circumstances.

In this complimentary 40-minute webinar, Robbins VP of Operations Steve Chorley and Aaron McClellan, Tunnel Superintendent III for Kiewit Underground, will explore the latest and greatest innovations in technology for TBMs.  Nearly all the parameters of a TBM can be monitored today, and this data can be transmitted via radiating coaxial cables to offices on the surface or even mobile phones. Simple observations, such as cutterhead RPM and penetration rate in a given geology, can result in altered operational parameters and reduced thrust that can speed up advance and increase cutter life. All that is required is proactive analysis by management and engineers, and good communication with the TBM operator.

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Rescuing & Refurbishing TBMs

TBM maintenance: it’s one of the most important factors predicting project success, but it is often treated with less importance than it deserves.  Experience shows, however, that maintenance plays just as much a part in the excavation rates as the proper TBM design. Regular maintenance can keep future rebuild costs low and keep equipment efficiency high while maximizing advance rates.  Conversely, a lack of maintenance, improper operation, and/or severe ground conditions can result in undue wear and slow advance rates. In a worst-case scenario, it can even require rescuing and refurbishing of a TBM.

In this 40-minute complimentary webinar, Robbins Sales Manager Europe Detlef Jordan and iPS Tunnel Manager Barrie Willis will discuss case studies of both optimal and suboptimal maintenance and operation of TBMs.  Suboptimal examples will be discussed where TBM maintenance was insufficient and required rescuing of the machine once it became stuck or immobile.  Optimal case studies will form a guideline for recommended machine maintenance to prevent the substantial damage that can occur.  Rebuild strategies for recovered TBMs in various adverse conditions will also be discussed.

 

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免费网络研讨会:如何加快隧道掘进

快速挖掘被许多人认为是隧道掘进机的最终目标,它可以可靠地按时(或提前)完成项目,无论条件如何,都能以更快的推进速度完成项目。然而,加快项目进度并不像推动机器、延长工作时间或增加人员规模那么简单。必须考虑整个项目进度,从最初的调查到设计过程。

罗宾斯设计总监Brad Grothen和Elisa Comis(McMillen Jacobs的合伙人)在这篇简洁、免费的40分钟演讲中,分享了快速挖掘在该领域的实际情况,包括掘进设计的案例研究和项目调度的实际示例。

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免费网络研讨会:在不稳定的地质下获得稳定的掘进

如果在混合地质条件下进行隧道施工,隧道横截面上可能存在任何岩土组合,那么您预计该项目将是一个挑战。当变异性是一个常数时,诸如地表沉降、掘进机上的磨损和适当的地质加固是一个问题。尽管存在这些变量,您的项目仍然可以成功。采用正确的技术、人员和操作方法,即使在最可变的地质条件下,也可以实现持续的良好掘进率。

罗宾斯副总裁Doug Harding和工程师Greg Michaelson将在这场免费的60分钟网络研讨会上探讨混合地质的情况,深入研究盾构机和跨模式掘进机在该领域的最新案例研究。Harding和Michaelson将根据我们众多现场服务人员的经验,根据成熟的设计和方法提出建议。无论你是一个操作掘进机的承包商,一个指定设备的顾问,还是一个即将开始的项目的业主,在不同的地质条件下,持续良好的挖掘都是可能实现的。

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免费网络研讨会:如何通过挤压地质、岩石破碎等

如果你曾经面对过穿越重山的隧道条件,那么你知道面对未知是什么。大多数深埋高覆隧道都会遇到一些意想不到的情况,无论是断层带、挤压地面还是岩石爆破。如果没有适当的规划、施工经验和掘进机设计,这些挑战可以迅速阻止掘进机在其路径上掘进。从可以有效避免卡住盾体的严重地质,到可以损害掘进机的高压超挖,开挖重山隧道可以掘进的十分迅速。

那么,当情况变得困难时,如何保持隧道掘进机的掘进?与我们的隧道专业人士共度60分钟,在这场免费网络研讨会上学习最好的东西,这是我们2018年系列的第一次。通过实际案例研究,我们将讨论几十年来在现场隧道施工中遇到的一些最困难的条件。了解如何克服障碍,同时尽量减少停机时间,确保施工人员的安全。

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