Forecasting Collapse and Monitoring of the Main Roof Current State in Working Faces of Coal Mines with Shallow Seams


Main roof state monitoring and assessment of the roof hanging influence on the coal seam in working face of the coal mines with medium thickness seams with dip angle varying from 0 to 35° using a long-pillar development system along strike and uprising with roof control by complete collapse and abandonment of inter-main pillars a technically difficult task and currently unsolvable by tools.
The main roof, composed of fine-grained gray sandstones, coarse-grained siltstones or interbedding of siltstones with sandstones, with average strengths of layers of about 30–40 MPa, is predicted to be moderately collapsing, and more than 50 MPa as difficult to collapse over a large area of coal seam spread.
Hanging of the main roof with subsequent uncontrolled collapse can lead to the displacement of methane accumulating in the waste space into the face and provoke an explosion, fire or other emergency.
It should be noted that the urgency of the problem is due to the fact that when large masses of the roof collapse during the lava retreat, an instantaneous release of large volumes of air from the collapsed space, accompanied by the release of methane and coal dust, occurs, which has repeatedly led to accidents. The article discusses the prediction of collapse and main roof current state monitoring in the working faces of coal mines with a shallow bedding by seismic method.
Using «Mikon-GEO» as a seismic prediction system in coal mines and pits allows to make risks manageable and accounted.

1. Adushkin V.V., Turuntaev S.B. Technogenic processes in the earth's crust (hazards and disasters). Moscow: INEK, 2005. 252 p. (In Russ.).
2. RD 05-350—00. Instructions for the safe operations in coal mines with seams hazardous by sudden outbursts of coal (rock) and gas. Available at: (accessed: November 10, 2020). (In Russ.).
3. Abramov I.L. Kinds and reasons for gas-dynamic phenomena in coal mines. Vestnik Kuzbasskogo gosudarstvennogo tekhnicheskogo universiteta = Bulletin of the Kuzbass State Technical University. 2015. № 1 (107). pp. 16–17. (In Russ.).
4. Pisetskiy V.B., Lapin E.S., Aleksandrova A.V., Lapin S.E. To the Task for General Requirements Formulation and Practical Implementation of Seismic Control System, and the Forecast of Sudden Releases and Rock Bumps. Bezopasnost truda v promyshlennosti = Occupational Safety in Industry. 2013. № 12. pp. 49–57. (In Russ.).
5. Lapin S.E., Pisetskiy V.B., Patrushev Yu.V., Chevdar S.M. The results of the seismic method technological application for remote assessment of strength loss risks of a rock mass in the mining processes. Nauch.-prakt. konf. «Seysmicheskie tekhnologii – 2016»: sb. tez. (Scientific and Technical Conference «Seismic Technologies – 2016»: collection of abstracts). Moscow: Feoriya, 2016. pp. 119–121. (In Russ.).
6. Pisetskiy V.B., Chevdar S.M., Lapin S.E., Levin V.A., Gorbunov V.A. On the choice of a criterion for assessing the risk of rock mass stability loss based on seismic, air-gas and geomechanical data. Mezhdunar. nauch.-tekhn. konf. «Bezopasnost truda i effektivnost proizvodstva gornodobyvayushchikh predpriyatiy s podzemnym sposobom razrabotki»: sb. tr. (International Scientific and Technical Conference «Labor safety and production efficiency of underground mining enterprises»: collection of works). Ekaterinburg: Izd-vo Uralskogo gosudarstvennogo gornogo universiteta, 2016. pp. 59–65. (In Russ.).
7. Lapin S.E., Vilgelm A.V., Pisetskiy V.B. Specifics of Designing the Systems of Control and Prediction of Geodynamic and Gas-Dynamic Phenomena. Bezopasnost truda v promyshlennosti = Occupational Safety in Industry. 2014. № 7. pp. 41–44. (In Russ.).
8. Bieniawski Z.T. Engineering rock mass classifications. Available at: (accessed: November 10, 2020).
9. Barton N.R., Lien R., Lunde J. Engineering Classification of Rock Masses for the Design of Tunnel Support. Rock Mechanics and Rock Engineering. 1974. Vol. 6. Iss. 4. pp. 189–236. DOI: 10.1007/BF01239496
10. Barton N. Application of Q-System and Index Tests to Estimate Shear Strength and Deformability of Rock Masses. Workshop on Norwegian Method of Tunneling. New Delhi, 1993. pp. 66–84.
11. Babenko A.G., Lapin S.E. A new generation of mine information management systems and safety equipment in coal mines. Izvestiya vuzov. Gornyy zhurnal = News of the Higher Institutions. Mining Journal. 2010. № 1. pp. 73–84. (In Russ.).
12. Babenko A.G., Lapin S.E., Vilgelm A.V., Orzhekhovskiy S.M. Principles of Building Multifunctional Safety Systems of Coal Mines, Experience and Perspectives of their Use in Kuzbass. Bezopasnost truda v promyshlennosti = Occupational Safety in Industry. 2011. № 1. pp. 16–22. (In Russ.).
13. Lapin S.E., Leonov R.E. Selecting Significant Factors when Simulating Mining Facilities. Izvestiya vuzov. Gornyy zhurnal = News of the Higher Institutions. Mining Journal. 2019. № 2. pp. 140–146. (In Russ.).
DOI: 10.24000/0409-2961-2021-4-13-18
Year: 2021
Issue num: April
Keywords : Mikon-GEO roof hanging control of the pitch of the roof landing seismic method monitoring of the condition of the main roof forecast of roof collapse
  • Nedzelskiy A.I.
    Nedzelskiy A.I.
    Senior Specialist LLC INGORTECH, Yekaterinburg, Russia Engineer, Candidate Ural State Mining University, Yekaterinburg, Russia
  • Shnayder I.V.
    Shnayder I.V., Senior Specialist LLC INGORTECH, Yekaterinburg, Russia Engineer, Candidate Ural State Mining University, Yekaterinburg, Russia
  • Lapin E.S.
    Lapin E.S.
    Dr. Sci. (Eng.), Prof. Ural State Mining University, Yekaterinburg, Russia