Results 161 to 170 of about 361,142 (196)

In-situ monitoring and analysis of tunnel floor heave process

Engineering Failure Analysis, 2020
Abstract Given that the forces acting on the inverts of high-speed railway tunnels are complex and their proper accommodation is critical to traffic safety, an in-situ stress test was conducted on the concrete of a reworked invert in the Fuchuan Tunnel on the Lanzhou–Xinjiang High-Speed Railway.
Mingqing Du, Xuchun Wang, Yongjun Zhang, Liang Li, Peng Zhang   +4 more
openaire   +1 more source

Floor Heave Controlling Technology of Deep Soft Rock Roadway

Applied Mechanics and Materials, 2012
The floor heave is one of soft rock roadway distortion. Based on soft rock supporting theory and engineering practice, the program bolt-mesh-anchors and floor corner, bolts coupling support to control floor heave of the soft rock roadway is proposed. Numerical simulation results show that bolt-anchors can mobilize the strength of the deep adjacent rock,
Zhan Jin Li, Shi Bo Li, Xue Li Zhao
openaire   +1 more source

Cause and significance of heave at Llandough Hospital, Cardiff — a case history of ground floor heave due to gypsum growth

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1987
Summary Inspection of some roof areas at Llandough Hospital, Cardiff indicated that the brick walls had moved outward at eaves level. A level survey of the ground floor showed approximately 60 mm of arching. The paper describes the structure, the site investigation to assess the cause of the damage and geochemical and microbiological tests on
A. B. Hawkins, G. M. Pinches
openaire   +2 more sources

A Potential Method for Predicting Coal-Mine Floor Heave: ABSTRACT

AAPG Bulletin, 1982
Floor heave or deformation of the mine floor into the mine opening is a problem which has plagued coal mines in this country and others. This paper describes the problem as it was manifested in two coal mines located in eastern Illinois, and reports the results of a U.S. Bureau of Mines-sponsored study conducted by the University of Missouri-Rolla. The
openaire   +1 more source

Numerical analysis on water-inrush process due to floor heave

Journal of Coal Science and Engineering (China), 2008
To investigate the water-inrush process due to floor heave, simulation model was made and factors of mining height, immediate roof strength, water pressure, depth and strength of confiningbed, excavation step distance and bury depth were analyzed by using UDEC software.
openaire   +1 more source

Floor heave in development workings

Soviet Mining Science, 1975
V. P. Shishkin, V. L. Gattsuk, E. V. Filatova   +2 more
openaire   +1 more source

Investigations into the role of groundwater in promoting floor heave in coal mine gateroads

Geological Society, London, Engineering Geology Special Publications, 1986
ABSTRACT The geological environment of two South Wales collieries at which site investigations were carried out is summarised. This is followed by a review of identified geological parameters and their effects on floor heave under the headings of discontinuities, mineralogy, and groundwater.
openaire   +1 more source

Numerical studies of floor heave mechanism and the effectiveness of grouting reinforcement of roadway in soft rock containing the mine water

International Journal of Rock Mechanics and Minings Sciences, 2023
Ivan Sakhno
exaly  

Study on failure mechanism and treatment measures of floor heave of high-speed railway tunnel in the interbedded surrounding rock with high geostress

Engineering Failure Analysis, 2023
Lichuan Wang
exaly  

Floor bolting for control of mine floor heave

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1995
openaire   +1 more source