Sinorock Visitor Team in AIMEX

The 2017 Asia-Pacific’s International Mining Exhibition (AIMEX) came to an end on August 31st,Sinorock sent visitor team to Australia and visited the exhibition. AIMEX is one of the largest mining exhibition in the Asia Pacific region and one of the three largest mining exhibitions in the world, which founded in 1970. The exhibition took place for three days at the Showground Exhibition Center in Sydney, Australia. About 280 exhibitiors came from Germany, China, South Korea, USA, Australia and other countries , every exhibits are mining supplies which well suited to the theme of the show. Visitors can find the exhibits...

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Sinorock®’s staff promotion ceremony —— Grow and win-win,towards excellence

On August 23rd, the staff promotion ceremony of Sinorock was successfully held in Luoyang administrative area. The ceremony was mainly promotion and awards for six excellent employees. The TV screen showed respectively the development trajectories of zhang Xiaoyue, Wei Jingru, zhang Weihao, Xiao Zhiguang, zhang Lina and Xu Jianfen. There are the talented woman and the company “goalkeeper” who is strict with himself between them. They relied on their efforts and sweat gained the company’s approval. Subsequently, the leaderships of the six staff gave the tutor messages to wish them to rise to a higher level in work. Finally, the...

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Sinorock organized staff to participate in fire knowledge training

Safety and quality are the eternal theme of industrial enterprises. Sinorock attaches importance to product quality, because product quality can protect customer construction safety, the same, the company also attaches importance to the safety of all employees. Just over the quality month activities, on August 19, the company ushered in the Henan Provincial Fire Brigade instructors to lecture on the 2017-year special seminar on fire fighting knowledge. Sinorock organized all staff of Luoyang office area and Luoyang factory in the morning and afternoon respectively to attend the lecture. In the lecture, the real and brutal fire case are very alarming,...

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Some reasons for soil nailing wall’s safety and quality assurance

The soil nailing wall is a kind of technology for supporting and strengthening the in-situ soil. The soil nails are integrated with the soil around tightly, so that they can form into a type of composite soil, relying on the frictional force of contact surface. Based on the analysis of the constructional scheme of the national stadium, the key factors for controlling the quality of the construction were found. The quality system during the project should be managed strictly. And the diameter, length and strength of the anchorage ought to be executed exactly. This scheme provided reasons for the national...

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Sinorock®’s Quality-Month Warning Meeting

Quality is the life and soul of the enterprise. Only high-quality products can make consumers leave a good impression on the enterprise. Quality is essential for the long-term development of an enterprise. Only with the facts and data to speak and with the quality to expand the market, an enterprise can be overcoming all obstacles and keep going forward. On June 23, Sinorock simultaneously held the 2017 quality month warning meeting at the Luoyang factory and Changzhou company. The meeting mainly summarized and informed the quality problems that the company appeared before for warning all staff of the potential quality...

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Practice of hole drilling for soil nails

Soil nail construction involves the formation of holes followed by insertion of steel reinforcement, grouting and construction of soil-nail head typically in a recess on the slope surface. In Hong Kong, drilling of a soil-nail hole is commonly carried out by pneumatic percussive rigs (Plate 1) with air as the flushing medium. Temporary casing is normally not required in the typical saprolitic soils encountered in Hong Kong. In special circumstances, a more robust drilling rig, for example, the Odex type drilling equipment, is used for driving temporary casing into a hole concurrent with drilling to prevent the hole from collapsing...

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Suitability of soil nailing with respect to soil types

As soil nail construction requires temporary stability in both the staged excavation and also the drilled hole stability, any soils with sufficient temporary self-support of about 2m sub-vertical height for minimum of 1 to 2 days and hole stability for minimum four hours are considered suitable ground for soil nailing. With the above criteria, the following soil types would be suitable for soil nailing: i. Stiff fine/cohesive soils ii. Cemented granular soils iii. Well graded granular soils with sufficient apparent cohesion of minimum 5kPa as maintained by capillary suction with appropriate moisture content iv. Most residual soils and weathered rock...

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Design procedures of soil nail wall

The global stability of soil nail walls is commonly evaluated using two-dimensional limit equilibrium principles, which are used for conventional slope stability analyses. In practise, different shapes of the failure surface behind the soil nail wall have been considered in various methods to analyze the global stability of soil nail walls. Some of these shapes of the failure surfaces include: (1) planar , (2) bi-linear with a two-wedge slipping mass (e.g., German method as in Caltrans, 1991), (3) parabolic , (4) log spiral , and (5) circular . Numerical comparisons among different methods show that differences in the geometry of...

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Design on soil-nailing wall Supporting of Foundation Pit in Bao Tou

Project Summary Proposed site is located in the north of the west of the east river road at bao tou . The side of the building has leisure square and commercial shop and underground garage on the north and south of village .The excavation depth is11 meters . Engineering geology According to the geological survey report, the soil is divided into miscellaneous fill,collapsible loess, silt, coarse sand. The physical and mechanical indexes of soil are shown in table 1. Table 1 Physical and mechanical properties of soils Layer soil type name Layer thickness(m) Severe(kN/m3) cohesive force(kPa) Angle of internal friction(°)...

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Hampton Roads Bridge-Tunnel

The Hampton Roads Bridge-Tunnel (HRBT) is a 3.5-mile (5.6 km)-long Hampton Roads crossing for Interstate 64 and U.S. Route 60. It is a four-lane facility comprising bridges, trestles, man-made islands, and tunnels under the main shipping channels for Hampton Roads harbor in the southeastern portion of Virginia in the United States. It connects the historic Phoebus area of the independent city of Hampton near Fort Monroe on the Virginia Peninsula with Willoughby Spit in the city of Norfolk in South Hampton Roads, and is part of the Hampton Roads Beltway. To ease the traffic pressure, the expansion of the I-64...

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