Quarrying a new site entrance

Gallagher Ltd is Kent’s premier building, civil engineering, quarrying and property business, with a reputation for doing things professionally and getting the job done. The Gallagher Group started in 1973 and is based in Kent, England. The business started out as a grounds work contractor and has since established into a main contractor and principle contractor, offering the best in civil engineering, property development, design and build contracting and quarrying.

Gallagher has a long standing partnership with Leica Geosystems Ltd, having successfully used Leica Robotic solutions since the TPS1100 model range. In June 2015 when Leica Geosystems launched the new Captivate range, Gallagher was keen to invest in all the advantages of this new technology. To date, Gallagher is now equipped with 17 Captivate one person kits and a GNSS unit, showing their loyalty and trust to the Leica Geosystems brand. They were keen to put them into use.

Gallagher was approached by their customer J and J Franks Ltd to work on the Mercers South Quarry on the Old Reigate Road in Betchworth, Surrey. They were awarded the contract for the construction of a new site entrance to the quarry and works were undertaken over a two month period. A diversion was set up to allow pedestrians and motorists to access the villages either side of the access way. The new access way was fundamental to J & J Franks, allowing it to continue operating its quarry activities and providing continued employment for its skilled workforce.

Leica Captivate software was used for the project to help reduce any unnecessary costs and delays associated with complex projects and were fundamental to the setting out of the project.

该项目的初始阶段是Gallagher构建切割和盖隧道，以形成现场入口。为此，首先有必要检查现有的法定服务（BT，UKPN –LV + HV和天然气），例如水，天然气和电话线，这增加了工作的挑战。为了检查现场的深度，必须制定试验孔，以确保站点的入口足够深，可以放入钟声（现场入口）。使用Leica Caintivate解决方案意味着更好的测量精度，即快速，轻松地提供最小的细节。使用Leica Geosystemsbob综合app下载的产品和解决方案，以便按时完成该项目。

当开始了这个项目,位置accuracy was paramount, it was crucial to understand exactly where the new works might clash with any statutory services so as not to cause any unnecessary disruption. The Leica Viva TS16 and Leica Viva GS14 were chosen for this, with the Leica Viva GS14 also being used for the basic cut and fill operations at the start of the project. The Leica Viva GS14 was perfect for this scenario, as it is purposefully made for demanding environments such as quarries site entrances and it provides real endurance in extreme temperatures and weather conditions. Robust and lightweight, it made it easy to transport around the quarry site. Simple, accurate and easy to use, the Leica Viva GS14 was partnered with the new CS35 Tablet which ran the Captivate software and was connected to SmartNet for accurate GNSS RTK corrections.

The Leica Viva TS16 ‘self learning’ one person total station was chosen because of its versatility to adapt to any environmental condition, boding well for a quarry site. Running the Leica Captivate onboard software, the most comprehensive onboard capability available, the exact conditions of the quarry site could be surveyed and recorded. This provided an understanding of any potential clashes or pinch points with the utilities. The Leica Captivate software allows for a really great user experience.

使用Captivate的此调查数据，生产了该站点的3D模型，并确定了新工作的设计。调查数据帮助加拉格（Gallager）决定了道路的最佳对齐，确保遵循该田野的现有轮廓。然后，使用新的设计和服务，将数据加载到Leica CS35平板电脑上，并在Captivate内的3D环境中在现场提供。该网站的所有元素都可以通过“实时”了解与公用事业的任何潜在冲突或捏点的“实时了解”。

在Mercers South Quarry完成这样一个复杂的建筑项目并非没有挑战。确保现有的法定服务足够深，不要损坏该项目。Leica Geosystems的Caintivate套件确保这些服务的设置和分配很容易。如果没有Leica Geosystems的测量设备，并且如果服务以任何方式损坏，它可能会使该项目返回六个月或更长时间。其他障碍包括一条行走路，这是一条路线，需要去除。树木和灌木丛也需要在采石场周围砍伐，最少对当地行人和居民造成。该合同在紧迫的时间限制内完成，以最大程度地减少对当地行人和驾驶者的破坏。

该项目始于2015年7月，道路的第一部分于2016年1月完成。采石场充满了沙子和垃圾填埋场，Gallagher将返回采石场，以完成通往永久采石场区域的通道。然后，它将成为一个全新的工作采石场，并拥有新的通道和新入口地点。新功能的采石场将使整个社区受益，并为该地区提供重要的新机会。

The Leica CS35 tablets offer them so much more than a conventional total station controller, being a full Windows 8.1 Computer, the capabilities it offers for onsite use are almost limitless. Gallagher has already installed AutoCad and their regular IT services onboard. The Leica CS35 tablets can be used for everything from setting out and surveying, to filling in check sheets, documenting and photographing as-builts, exchanging important data and doing email.

"We wouldn’t have been able to complete this construction project for J and J Franks without the excellent kit and solutions from Leica Geosystems”, remarks Ken Maillinson, Technical Contracts Manager at Gallagher. “We always choose Leica Geosystems solutions for our surveying jobs as we can rely on the high quality of the instrument and the accuracy of the measurements. Furthermore the support and excellent after care received from their Technical Support and Technical Service teams are second to none”.