In 2010, four expressways connecting China's Yunnan province to Southeast and South Asia were completed.
2013-08-26
Relevant authorities in Yunnan Province have learned that construction is accelerating on four high-grade highways in the province, which are oriented toward Southeast and South Asia. By 2010, the Yunnan sections of these four major international corridors—connecting to both regions—will be fully completed.
Relevant departments in Yunnan Province have learned that construction is accelerating on four high-grade highways in the province, which are oriented toward Southeast and South Asia. By 2010, the Yunnan sections of all four major international corridors leading to these two regions will be fully completed.
According to reports, the four high-grade highways are as follows: 1. The Yunnan section of the Kunming–Bangkok Highway will fully transition to a high-grade highway system primarily based on expressways by 2007. Currently, the Yunnan segment of the over 1,800-kilometer-long Kunming–Bangkok route has largely been completed as a high-grade road. Meanwhile, the Thai section has already achieved full high-grade status. As for the Lao section—where construction is jointly undertaken by the three countries involved—the Chinese portion has already been fully finished. Construction on the Lao segment is set to wrap up by April next year, while the Thai section is expected to be completed by October of the same year. 2. The Yunnan section of the international corridor linking Kunming to Vietnam will be fully completed by 2007. 3. Construction of the Chinese section of the international highway stretching from Kunming via western Yunnan toward Yangon is scheduled to fully transition into a high-grade highway network by 2010. 4. The Chinese segment of the international highway connecting Kunming through Baoshan, Tengchong, and Houqiao to Myanmar’s Myitkyina and onward to India’s Ledo and Bangladesh’s Chittagong is projected to become a high-grade highway by 2008.
Previous:
Next:
NEWS
Technical Review of Slurry Pressure Balance Shield
Abstract: Slurry Pressure Balance Shield (SPB) represents a core type of closed‑face shield machine, which is widely adopted in tunnel engineering projects constructed in strata with high groundwater pressure and high permeability. This paper illustrates the working principle of SPB shields. Two major technical routes are classified according to pressure regulation modes: the direct‑control type (Japanese design) and the indirect air‑cushion control type (German design). A comparison is conducted regarding control logic, pressure stability and stratum adaptability between the two machine types. The excavation‑face stabilization mechanism governed by the coupling effect between filter cake and slurry pressure is analyzed. Technical comparison with Earth Pressure Balance (EPB) shields is also performed, providing references for shield machine type selection and construction‑technology research. 【This article is compiled for popular science purposes in the industry. Part of the technical data refers to publicly available professional literature.】
Main Composition and Technical Characteristics of Earth Pressure Balance Shield Machine
Abstract: The earth pressure balance (EPB) shield is mainstream equipment for urban tunnel construction. This article sorts out the composition and technical features of core systems of the EPB shield, including cutterhead, soil conditioning, muck‑removal conveying, grouting & sealing, guidance and monitoring. It analyzes component functions and selection points under various working conditions for industry‑wide technical exchange. 【This article is compiled for popular science purposes in the industry. Part of the technical data refers to publicly available professional literature.】
Contact us