Question

Core length is 10 ft.

Length of core less than 4” in length is 28.5”.

Tunnel diameter is 20 ft.

Jn = 4

Jr = 2.5

Ja = 2

Jw = .72

SRF = 100

What is the RQD? ___________

Find Q ________

Find De ________

Find Vp ________

Find the estimated support category based on Q ___________

Find RMR ________

Define the following in 10 words or less each:

RQD

RMR

Q

De

Answer 1

Qudlty derignatoins ROD Rock ped in pecee hch Ihe RoD is Cx is the umimeion of all coaes largen prefoaored core (3.73") from the (57') ROD = than 10 Cm 91un 150 cm CO1) - O-1 Jh X100 1-0-1x4 0.1X4+1 93.24/ developed Gy bBastan, Cren, lunde 14 -it i barec &n RQD, Numbes1of joint Cets Jontoughness, degree of alterahron atérn:- water inflocw, Btreas Condtion J31 X SRF Ja Js 2.5xo72 93.84 2. Co.l1) o very poo 0.21 Rocls mas rtunnclig uniana compres4iVe RMRE 1ock It Mais dependa R Op,pacing 0f diu continudia, trength' Condi1on of discontinurtles ground oate condrtion, Ortentation Uof dis (ontime Caip& otrike) CS Scanned with CamScanner,