Severe natural conditions and complex terrain make it difficult to apply precise localization in underground mines. In this paper, an anchor-free localization method for mobile targets is proposed based on non-metric multi-dimensional scaling (Multi-dimensional Scaling: MDS) and rank sequence. Firstly, a coal mine wireless sensor network is constructed in underground mines based on the ZigBee t...

Methane gas emission, accumulation, and explosion are the most important risk factors in underground coal mines. Hence, having a knowledge of methane gas emission potential in underground coal mines is of crucial importance in preventing the explosion risk, loss of life, and property, and providing miners' safety. The purpose of this work is to provide the prediction maps for the C1, C2, and B2...

The aim of this study was to evaluate radiation situation at the “ Pirit ” peaceful underground nuclear explosion site . with capacity 37.6 kt оf TNT equivalent carried out on May 25, 1981 territory Kumzhinskoye gas condensate field a depth 1.5 km is located near northern coast European part Russia in delta Pechora River ( Nenets Autonomous District ). stop uncontrolled gushing Radiation assess...

The article covers an event that has been hidden for fifty years, namely the failure of a nuclear explosion at Kharkiv region. possible ecological consequences mentioned are analyzed. Data from different sources compared further planning researches condition district. basis creating system studying environmental time its implementation and present is provided. basics standard calculations proba...