With the development of economic construction, underground space development continues to move towards the deep. "More, long, big, deep," will be the general trend of the development of underground engineering in the 21st century. Rock burst is a kind of sudden geological disasters with a higher frequency in deep tunnel construction. Rock burst prediction has very important significance for the...

Uniaxial compressive strength (UCS) is one of the most significant factors on the stability of underground excavation projects. Most of the time, this factor can be obtained by exploratory boreholes evaluation. Due to the large distance between exploratory boreholes in the majority of geotechnical projects, the application of geostatistical methods has increased as an estimator of rock mass pro...

In underground tunnels or caverns, time-dependent deformation or failure of rock mass, such as extending cracks, gradual rock falls, etc., are a costly irritant and a major safety concern if the time-dependent damage of surrounding rock is serious. To understand the damage evolution of rock mass in underground engineering, an in situ experimental testing was carried out in a large belowground t...

This article presents a robotic dataset collected from the largest underground copper mine in the world. The sensor measurements from a 3D scanning lidar, a 2D radar, and stereo cameras were recorded from an approximately two kilometer traverse of a production-active tunnel. The equipment used and the data collection process is discussed in detail, along with the format of the data. This datase...

................................................................................................ 3 Introduction............................................................................................ 3 Part 1................................................................................................. 3 Diesel aerosol composition and structure................................................

Yer altı, tünel ve mağaralar; kentlerde, kırsalda ülkelerin sınırlarında terör organize suç örgütleri ile kaçakçılar tarafından sıklıkla kullanılan mekânlardır. Özellikle son yıllarda kolluk kuvvetlerinin insansız hava kara araçları gibi keşif gözetleme teknolojilerinden daha fazla istifade etmesi, örgütlerin yer mağara ortamlarını asimetrik avantaj olarak kullanma isteğini da artırmıştır. mağa...

Tunnel engineering is an important aspect of developing and utilizing underground spaces. water inrush became a common problem that restricts the safe efficient construction tunnels. This paper focuses on karst water-rich tunnel in Chongqing establishes seepage field distribution model around tunnel, analyzing evolution law field. The balance method runoff modulus are used to predict inflow. pr...

The recent rapid development of underground utility tunnels (UUT) in China reflects the government’s resolve to improve municipal service amid urbanization. Although safety is primary concern design and operation UUT, moisture issue appears be neglected. In southern eastern China, however, condensation UUT noted believed responsible for high rate equipment failure deterioration air quality insi...