Roof bolt support performance, Other Engineering

Assignment Help:
A certain coal mine has weak layer comprising of 10cm, 11cm, 9cm, 12cm, 15cm , and 19cm of inter laminated shales and mudstone. Design a full column resin bolt support system if the weak layer is overlain by 70cm of sandstone.
Given:
Hole diameter=28mm, bolt diameter=20mm, bolt tensile strength=500MPa, sandstone tensile strength=6MPa, bord width=6m, resin rock interface shear resistance=2.5MPa

Also determine the reasonable cut-out distance

Related Discussions:- Roof bolt support performance

Market value, Calculate the market value of a firm with total assests of $1...

Calculate the market value of a firm with total assests of $105 million and $50 million of 10% perpetual debt in the capital structure. The firm''s cost of equity is 14% on the $55

Thermodynamics, original temp. of plate is 25 degree c.when put in burnace ...

original temp. of plate is 25 degree c.when put in burnace its upper part is 250 c and lower is 100 and mass is 56kg.find out heat transfer

Calculate the thermal conductivity, A steak which is 2.5cm thick is cooking...

A steak which is 2.5cm thick is cooking in a frying pan which has a 4mm thick base. The electric element used to heat the pan is turned to a level such that the bottom surface of t

Coding system, What is the possible problem if there is more than one part ...

What is the possible problem if there is more than one part having the same code?

Burners - aircraft engine , BURNERS :  ATOMISER BURNERS This ...

BURNERS :  ATOMISER BURNERS This type of burner presents the fuel in a finely atomised spray by forcing the fuel to pass through a small orifice. The size of the orifi

CRO, different types of switches used in CRO

different types of switches used in CRO

Rapid Prototyping, Give justification towards the development of Rapid Prot...

Give justification towards the development of Rapid Prototyping?

Fibre optics communications, explain the fibre optic communication system w...

explain the fibre optic communication system with block diagram

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd