caused by a cable failure. thankfully no one was injured in that chaos. speaking of chaos. environmental group is encouraging people to deflate the tires of other people s suvs in order to combat climate change. the group called ad busters tweeting out step-by-step gentle escalation in tactics. the tweets advocating do target wealthy areas so as not to disrupt workers. those are your headlines. ainsley: just mean. carley: just mean and a violation of twitter s policies. we will have to wait to see if they take the tweets out. ainsley: janice dean fox weather forecast. zn january severe weather and a winter storm. oh my goodness so it s happening today, tuesday, and wednesday. we have got all the ingredients for severe weather and this big blizzard that s going to impact the northern plains and the rockies there is the set up and
Pretension is the pre-added axial tensile force on fully grouted bolt systems, which include rock bolts and cable bolts. Although a series of studies via lab testing and analytical modelling proved the importance of pretension in cable bolts, there is no systematic analysis to guide the optimal pretension values to be applied on cable bolts in different engineering geological conditions. Complicated geological conditions, such as anisotropic in-situ stress, bedding plane detachment and country rock deformation, cannot be fully represented in the lab or analytical work. In addition, field scale numerical models to investigate cable bolt performance and its interaction with various geological conditions are rare. This paper analyses the effect of pretension on the performance of cable bolts in underground coal mines via field scale numerical models, with considering different geological conditions (in-situ stress, bedding plane stiffness and rock mass properties). Numerical models were d
attacks. mayor bloom burg was there. the nba is our red cross, our 911 all rolled into one. they did an incredible thing. okay. time now to take a look at the morning papers. we will start with the detroit free press. a massive power outage if detroit tuesday left about 100 buildings without power. water been called a major cable failure shut down a major power grid shutting off fire stations, office buildings, police stations and a want who. a football of schools in the area were forced to close for the day. do you remember when they had water issues this summer? i mean, this is a joke. city officials say power has been fully restored.
downtown detroit. government offices, hospitals, not to mention traffic lights all dark right now. the cause? city officials reportedly cause a major cable failure. rick leventhal has the latest. how does this happen? what happened? well, we re still trying to figure all that out. even the airport lost power for a while. it s back on there now. the city s public lighting grid suffering, as you said, a major cable failure that caused the entire grid to lose power. the utility says that it s isolated the issue. it s working to restore electricity as soon as possible. we re waiting to a press conference now with mayor mike duggan on what may have gone wrong. this is a massive outage. the joe louis arena and numerous public schools. wayne state university canceled all of its classes on the main campus, including any courses or events scheduled for tonight.
as if bankrupt detroit doesn t have enough problems, a power outage plunged detroit into the dark today. rick is monitoring the situation from our new york headquarters. reporter: as of late this afternoon, about 75% of the city s vast this was a serious shut down in the heart of one of america s biggest cities, a major cable failure caused an entire grid to ruse power, cutting power to fire stations, and numerous schools. in fact the entire public school system closed down before noon. parents whose kids don t ride busses had to bupick them up. eight to ten people were stranded on elevators, prompting