experimental study of the shear strength of un filled and rough rock

8/12/2019 Experimental Study of the Shear Strength of Un Filled and Rough Rock

1/72


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3/72

T

AD .............................................................................................................................

1. D................................................................................................................................... 1

1.1 B ....................................................................................................................................... 1

1.2 O ........................................................................................................................................... 2

2. A D ............................................................................................................................. 3

2.1 I ...................................................................................................................................... 3

2.2 B ............................................................................................... 3

2.2.1 F .................................................................................................. 3

2.2.2 S .................................................................................................................. 5

2.3 P .............................................................................................. 5

2.3.1 C ...................................................................................................................... 5

2.3.2 P (1966) .......................................................................................................................... 6

2.3.3 L A (1970) ............................................................................................. 6

2.3.4 B (1977) (1997,) ........................................................................................... 7

2.3.5 M (1992 & 1996) ...................................................................................................... 7

2.3.6 K (1995) ..................................................................................................................... 7

2.3.7 G (2001) ....................................................................................................................... 8

2.3.8 R ..................................................................................................... 8

3. A D .......................................................................................................................... 9

3.1 I ...................................................................................................................................... 9

3.2 P ............................................................................................................................. 9

3.3 S ............................................................................................................... 10

3.4 P ...................................................................................................................... 11

3.5 T ............................................................................................................................ 12

3.6 M ............................................................................................................................. 13

3.7 F ....................................................................................................... 15


4/72

E

4. A ................................................................................................................................. 18

4.1 I .................................................................................................................................... 18

4.2 T ..................................................................................................................................... 18

4.3 A ........................................................................................................... 20

4.4 T ................................................................................................................................... 21

4.5 T ................................................................................................................................ 23

4.6 T ...................................................................................................................................... 27

4.7 A ............................................................................................................................ 32

4.7.1 N ....................................................................................................... 32

4.7.2 I ........................................................................................................ 32

4.8 E JCS S .................................................................................. 34

5. A A .......................................................................................................................... 35

5.1 I .................................................................................................................................... 35

5.2 S ................................................................................................................... 36

5.3 P ................................................................................................... 38

5.3.1 C ..................................................................................................... 38

5.3.2 C ...................................................................................................... 40

6. A AA ................................................................................................................... 43

6.1 I .................................................................................................................................... 43

6.2 A ............................................................................................................ 43

6.3 A ....................... 45

6.3.1 R S 1 .............................................................................................................. 45

6.3.2 R S 2 .............................................................................................................. 46

6.3.3 R S 3 .............................................................................................................. 47

6.4 A ................................................................................................................... 49

6.5 F ......................................................................................................... 51

7. ................................................................................................................................... 52


5/72

T

8. ...................................................................................................................................... 53

AD

A. R LDT .................................................................................................. I

B. T ............................................................... III

C. G .......................... ...................... ............. I

D. G ..................................................

E. F ............................................................... II


6/72

E


7/72

T

AD

F, I F J; .

S, I CL, LT S S

.

F, E STEN AB

.

T "S H C SC". SC

S E A, E S K

L T, T R I T, C

T . ..


8/72


9/72

C 1 I

1

1 D

1.1

R . T ,

(P, 1966). T

. T

. T

. I

. R ,

, . O

. R

, . I , I

.

O . I

. T

. I ,

. T

. I

.

I ,

. T . O

. E

. A

. E

(JRC), (JCS) . I

. A

. T

.


10/72

E

2

1.2

T ,

. T

. T

. T

, ,

. T , ,

. M

.

A , . T

. T

, . T

.

I , I J (2009)

. T J(2009).

H, . M

. T

, .

T . T

. T

. T

. T

.

I I . I I . I , I

J(2009). T

. C

. T

.


11/72

C 2 L

3

2 A D

2.1

A ,

. T

. T , ,

.

T . E ,

. T

.

I , ;

. A, .

2.2

2.2.1 &

T .

, . T . T

A C. T

:

A' :T .

A' : T

.

' :K .

I , . I

T (1925) B T (1950 1964).

T :

A ,

.


12/72

E

4

C

. T

.

T . T

:

= (2.1) .

T , ..

. T (2.1)

A . T

.

T :

= (2.2)

.

B (2.1) (2.2) :

= (2.3)

. I . T :

= tan (2.4)

I

.

M

. I . T

. A

. I ,

(G (1966) L T (1986)).


13/72

C 2 L

5

2.2.2

A . I

. I . I

, . T .

I . M . T

B

(1973) JRC, . O

.

A

. T (RMS) (CLA) (T 1982). I , ,

, , (SF),

() () (P 1996).L, , M

(1983); B S (1985); F (2003). T

. S

.

I . T

(M 1990).

2.3

T

.

2.3.1

C

. I C. I :

= (2.5) , . I :


14/72

E

6

= tan (2.6)

. T , C,

.

2.3.2 (1)

P . H

. H

:

= tan+ (2.7)

. I . P . I

. T :

= c+ tan (2.8) c .

2.3.3 (10)

A L A (1970)

. T :

= (2.9):

: P : E : A : S : B : D = arctan


15/72

C 2 L

7

.

2.3.4 (1) (1 ,)

A B C (1977)

. I

. I JRCJCS . T :

= tan log + (2.10)

,

.

JRC 0 20,

0 20 .

JCS

.

(1997 ,) B . H

JMC . JMC

0 1 0 1 .

2.3. (12 1)

M (1996)

. T :

= tan + /1+ (2.11) , . T .

.

2.3. (1)

K (1995) . I

. T :

= + log + (2.12) I , . ,


16/72

E

8

. SRP

.

2.3. (2001)

G (2001)

. H .

T ATM A T S.

T G (2001) . I :

= tan 1 + (2.13) : = + (2.14) : = . 1 (2.15) .T . I .

= (2.16) .2.3.

I , . T

. T (

). T

, .


17/72

C 3 C

9

3 A D

3.1

I , J (2009) . T

. T

: , , , . E

. T

.

3.2

T

, . T .S := + (3.1)T (P

(1966)). I

. T . T

. F

.

F , . F, . T . T

. T

. T

. A

30 .

A

. I L A (1970), B (1973) B . (1981).

P (1966), F (1990) G (2001)

. I , ,


18/72

E

10

. T , ,

.

A J (2009),

, .. 30, . 30

. T

70.

T . T

:

=

tan (3.2)

.C (3.1) (3.2) :

= tan+ (3.3)3.3

I . T

, ,

. T

. I ,

, .

I . L

.

T , . T

,

(M 1983). R ,

.

F ,

:

= (3.4)


19/72

C 3 C

11

H H A . T

:

= (3.5) . T . T . H 1

.

H, H , ,

. T

() .

= tan (3.6)

3.4 A

T G (2001). I ,

. H

. T

, G, ,. T , :, = (3.7) , G 0.5 . C .T

. I 3.1. T

. A

.


20/72

E

12

3.1

T

.

I

. T

3.5

T

T

T

=

. T,

.

.

. T

:

, .

( 2006)

.. I

. C

. T

.

(3.8)


21/72

C 3 C

13

T

. T :

, = (3.9)C (3.8) (3.9) :

, = (3.10)A :

(3.11)

C (3.10) (3.11):

, = (3.12)T . F :

, = (3.13)3.6

M

.

A .

I . I

:

3.2 A


22/72

E

14

A

. I . I

:

L , , L , ,

3.3 A

I , ,

.

A , :

(3.14)T

. A , :

(3.15) . T

:

(3.16) , . H . C (3.15) (3.16) :

(3.17)


23/72

C 3 C

15

. T

.

J (2009) ,

:

( (3.18) .

T

. T (3.18)

. I , =0 .

O , ( )

. T

. T (3.18)

. I , =1

.

I .

, :

(3.19) , 2 2 .3.7

A , J (2009)

. B, .

1 :

t(+ (3.3)2 :

(3.5)


24/72

E

16

3 :

t( (3.6)4 : ( (3.7)5 :

, = (3.13)6 :,= , (3.18)T , J(2009),

. (3.7) (3.13) :

= 10 (3.20)C (3.5), (3.6) (3.20),

:

,=0,5 tan 10

(3.21)

C (3.5), (3.6), (3.18) (3.21),

:


25/72

C 3 C

17

rt 2 5 t 10

(3.22)

E (3.22) :

= 10 (3.23)E (3.23) J(2009) . T

5.


26/72

E

18

4 A

4.1

I ,

J (2009) . T

. E

.

T L T. T

280 280

ISRM (ISRM 1981).

4.2

T E S AB. E

251414 20 . I ,

. H,

. T 4

. A ,

. F , 1, 2 3. A ,

T 4.1.

4.1 .

() ()

1 10.40 10.15

2 12.52 11.51

3 13.71 12.93

T

. P F 4.1.


27/72

C 4 S

19

4.1 .


28/72

E

20

4.3 A

B ,

. I

. S 1 , S 2

S 3 .

4.2

250 . ( (2009)).

A , . A,

.

A F 4.2, , =0 =0.6

=0.6 =1.0

. C, =0, =0.4,

=0.75 1, 2 3 . T F 4.8.

,

. T 35 . S, .


29/72

C 4 S

21

A, ,

. T :

(3.19) 2 0.5 = 2 120 .

T 4.2

:

4.2 .

D ()

()

, ()1 0 30 65 0

2 0.4 22.5 57.5 5

3 0.75 15 50 30

T , . I E (3.19). F S 1,

, . ,=0. H, T 4.2, 5 30 S 2 S 3 .I , 3 MP . I 0.1 /

5 .

4.4

D , . T

3 MP .

T . F S 1,

. H,

2 3.


30/72

E

22

I F 4.3, . T 0.5 3

2 3 . T .

10 .40

10 .15

0.50

12 .02

11 .51

3.00

10 .71

12 .93

S A M P L E 1 S A M P L E 2 S A M P LE 3

4.3 ().

T , 3 MP.

T 4.3 :

4.3 .

() () A (2) ()

1 10.40 10.15 105.56 31.72 12.02 11.51 138.35 41.5

3 10.71 12.93 138.48 41.5

T

. A

. T ,

. T

. F 4.4 S 1.


31/72

C 4 S

23

4.4 . 1.

I 21.5

. T

. I 8 N 1 3 8.5 N

S 2. T T 4.4.

4.4 .

() A () ()

1 31.7 8 39.72 41.5 8.5 50

3 41.5 8 49.5

4.5

T 500 N

. A F 4.5.

0

5

10

15

20

25

30

35

21.25 21.00 21.00 20.02 19.93 21.03 21.62 21.84

(

)

()


32/72

E

24

4.5

T F 4.6,

4.6 ( (2009)) (0)

(1) , (2) , (3) , (4) , (5)

, (6) & (7) , (8) ( . 2005)


33/72

C 4 S

25

4.7 ( . 2005)

T LDT (L D T)

. T 4 LDT, .

S 5 0.1

/. D 0.5

0.0017 /.

T :

1. C .

2. P .

3. A

. T .

4. A (2 3 N),

.

5. LDT .

6. A .

7. A .

8. S .

T 3 F 4.8.


34/72

E

26

4.8 1(), 2() 3 () .

2 3 .


35/72

C 4 S

27

4.6

T T 4.5. T

,

, , , , , N , .T . T

. T

(4.1)

rt

(4.1)

. T 0.1 . T LDT. T

. T , 0 5 .T 4.5 . G F 4.9 F 4.14. I

F 4.15 . T

LDT A A.

4.5 1, 2 3.

()

()

,()

()

()

()

()

,()

1 2.28 5.35 0.84 66.88 13.96 39.76 36.82 1.11

2 2.39 2.60 3.96 47.31 5.0 41.99 13.55 0.54

3 2.42 3.33 4.63 54.02 0.61 43.64 15.43 4.95


36/72

E

28

4.9 (

4.10

10

0

10

20

30

40

50

60

70

0 1

A()

0

10

20

30

40

50

60

0 1

)

.

2 3

D ()

2 3

D ()

1.

1.

4 5

N

D

T

4 5

S L (N)

N L (N)


37/72

4.11 (

4.12

20

10

0

10

20

30

40

50

0 1

A()

0

10

20

30

40

0 1

)

.

2 3

D ()

2 3

D ()

C 4 S

29

2.

2.

4 5

N

D

T

4 5

S L (N)

N L (N)


38/72

E

30

4.13 (

4.14

20

10

0

10

20

30

40

50

60

0 1

A()

0

10

20

30

40

50

0 1

)

.

2 3

()

2 3

()

3.

3.

4 5

N

D

T

4 5

S L (N)

N L (N)


39/72

C 4 S

31

4.15 .


40/72

E

32

4.7 A

I ,

.

4..1

I

. F S 1 ,

39.7 N 24 N . T

.A , 2.3 2.4 MP

3 MP .

F S 3, 30 . ,

LDT . T LDT

. A ,

LDT 2 3. T

3.

I S 1 3

. T .

4..2

T 4.6 F 4.16 . I

S 1 , .

T S 2 3 ,

LDT S 3.

4.6 .

A A 1 66.9 36.8

2 47.3 13.6

3 54 15.4


41/72

C 4 S

33

4.16 .

R S 1, F 4.9

. I . T

. I

0.2 1 . T

.

R S 2, F 4.11

. A 4 . I

,

. H,

. T S 2

5 .

R S 3, F 4.13 3 . A LDT,

. T S 2

. H .

I ,

.

0

10

20

30

40

50

60

70

80

1 2 3

A()


42/72

E

34

4.8 E C

S JCS, ,

B C (1977). T

S R F 4.17.

4.17 .

T .

, . T 10

. O ,

. T B C (1977). T :

og( 88 + (4.2) JCS. S (N/3), 27 N/3.T 10 T 4.7.

4.7

1 2 3 4 5 7 8 9 10

40 42 46 38 44 40 44 40 50 45

A ,

S 45.8.

(4.2), 125 MP.


43/72

C 5 O

35

5 CA CA

5.1

I , ,

, H ,

. T

. T .

T S L

ATOS III, F 5.1. I ,

, 4

. C .T 50 .

5.1 A ( )

T

. T

.


44/72

E

36

T

MATLAB (M

F

5.2

5.2

I H

. T

L

T 5.1. T

. T

2007). T

S 1 F

1

H

2

0.5

. T

2 . T S 2 3 A

0.5 0.5 .

5.2.

.

,

. H,

16 . T

S 1 B.


45/72

C 5 O

37

5.1 1.

A, . T . T

H .

F 5.3 S 1. T S 2

3 A C. T T

5.2.

5.3 1.

1

= 0.19370.9083

R = 0.99991

= 0.19360.908

R = 0.9999

0.10

1.00

10.00

1 10 100

()

A ()

S1

S1 L

() ()

1

2

() () 2

() ()

0.5 1 0.380 20.797 0.190 0.380 20.797 0.190

1 2 0.367 20.168 0.367 0.367 20.163 0.367

2 4 0.346 19.060 0.691 0.345 19.009 0.689

4 8 0.323 17.875 1.290 0.323 17.880 1.290

8 16 0.302 16.799 2.415 0.301 16.762 2.410

16 32 0.278 15.515 4.442 0.277 15.504 4.438


46/72

E

38

5.2

.

1 2 3

0.194 0.194 0.147 0.147 0.152 0.156

0.908 0.908 0.752 0.756 0.780 0.770 0.999 0.999 0.994 0.995 0.995 0.9955.3

.3.1

P

. T

0.5 0.5 . T , . 5.1, , .

cos90 = | ||||| (5.1)A ,

. T 0.5

0.5 . ,

; , C.

T

. A

. T . I

,

0. I, , , 180.

T T 5.3.


47/72

C 5 O

39

5.3 .

1 2 3

() 0 180 0 180 0 180

A (A) 0.615 0.617 0.548 0.540 0.476 0.479

A() 0.663 0.670 0.603 0.612 0.500 0.528

2.765 2.820 3.704 4.206 3.648 5.354 58.286 58.553 47.904 52.338 48.918 64.312 0.987 0.987 0.993 0.995 0.990 0.989/ 21.080 20.763 12.933 12.444 13.409 12.012A T 5.3, 0.5. T . T

. T S 1 S 2 3. T

F 5.4 S

1 . T S 1 , S 2 S 3

A D.

I F 5.4 T 5.3

. T

.

5.4

1.

0 10 20 30 40 50 600

0.1

0.2

0.3

0.4

0.5

0.6

0.7

Measured dip angle()

Pote

ntialcontactarea

ratio

Actual

Regression


48/72

E

40

T F 5.5 S 1

. T A E.

5.5 1 ( )

.3.2

I T 5.3

0.5. T (

). H, S 1

0.5. A ,

T 5.4. T

.

5.4 .

1 2 3

() 5.3 1.3 0.7

() 5.3 1.3 0.7

S


49/72

C 5 O

41

T ,

. T T 5.5. A ,

0.5. I 2 3 ;

.

5.5

.

1 2 3

() 0 180 0 180 0 180A (A) 0.502 0.502 0.508 0.502 0.496 0.497

A() 0.523 0.530 0.551 0.562 0.524 0.553 2.647 2.705 3.692 4.193 3.663 5.408 49.240 49.467 45.935 50.274 50.004 65.867 0.987 0.987 0.993 0.996 0.991 0.989/ 18.602 18.287 12.442 11.990 13.651 12.179

T ,

S 1 . I

F 5.6.

5.6

1 .

0 5 10 15 20 25 30 35 40 45 500

0.1

0.2

0.3

0.4

0.5

0.6

0.7

Measured dip angle ()

Potentialc

ontactarea

ratio

Actual

Regression


50/72

E

42

F 5.7 S 1

. T . T

. T 5, .

5.7 ()

() 1 ( ).


51/72

C 6

43

ECA AA

.1

T . T

. T

. T

. T

.

.2 A

T ,

, H

.

I , E 6.1

, .. 2 3.

10

(6.1)

S =0 , E 6.2 S 1.

= 10 (6.2)A, 35 . T

() (). I

.

A . T

T 6.1.


52/72

E

44

6.1

. A .

C A A

1 66.88 66.43 66.00 66.22 69.32 68.95 69.14

2 47.31 52.31 50.07 51.19 52.51 50.34 51.43

3 54.02 60.44 55.87 58.16 61.57 55.57 58.57

S T 6.1, :

F S 2 3,

,

(1.3 0.7) . T S 1 5.3. F S 2 3,

. T

( ), . T

. S

1 , ,

.

T ; ,

. T T 6.2.

6.2

. .

I T 6.2

. S 1 ,

. S 2 S 3

. I

. F 6.1

.

C

1 66.9 66.2

2 47.3 51.2

3 54.0 58.2


53/72

C 6

45

6.1 .

.3 A

I ,

. I

, =0 =1 (.. ) (3.9), 2 2 . E . I .

.3.1 1

F 6.2 S 1. T 66.88

0.84 . T 66.43

0.5 . I F 6.2

. T . T

.

0

10

20

30

40

50

60

70

80

1 2 3

A

()

S T C M


54/72

E

46

6.2 1.

.3.2 2

F 6.3 S 2. T 47.31

3.96 . H, ;

2. A , B (1982)

0.01L, L .

T 1.2 . S 1.2

.

A , 51.17

1.2 . R ,

. H, . T

S 1.

0

10

20

30

40

50

60

70

80

0 1 2 3 4 5

()

()

Conceptual ModelShear Test


55/72

C 6

47

6.3 2.

.3.3 3

F 6.4 S 3. T 54.02

4.63 . , S 2

. S .

R , 53.13 1.3

. A S 2, . H,

. T ; S

3 (=1).

0

10

20

30

40

50

60

0 1 2 3 4 5

()

()

Conceptual ModelShear Test


56/72

E

48

6.4 3.

T 6.3 . F S 1,

. H S 2 3 . T

.

6.3

()

()

D

()

D

()

1 66.88 66.43 0.84 0.5

2 47.31 51.17 3.96 1.2

3 54.02 53.13 4.63 1.3

0

10

20

30

40

50

60

0 1 2 3 4 5

()

()

Conceptual Model

Shear Test


57/72

C 6

49

.4 A

I ,

. I

(G E 2000; K E 1995).

T ,

. I

. I

. T

.

6.4 . A

.

1 31.4 31.0

2 16.2 15.1

3 26.1 20.9

F 6.5 6.7 (

) . L ,

:

S 1

.

S 2 .

S 3

.

I .

F ,

. F ,

. T

. T

.

H ,

.


58/72

E

50

6.5

1.

6.6

2.

S

S


59/72

C 6

51

6.7

3.

S


60/72

E

52

7 CC

T .

T

. T ,

. T

.

T . T

.

T , ,

. T

1% (B 1982)

T

. I ,

. F , . H,

, .


61/72

R

53

8 EEECE

B, S.C. (1980). E S S E S S,

D R J. D T, D E S, T

L.

B, S.C.; L, A.C.; B, N.R., (1981). E

, I. J. R M. M. S.

B, N., (1973). A .

E G, . 7, N. 4, . 287332.

B, F.P.; D. T, (1950). T F L S,P I, O P, L.

B, F.P.; D. T, (1964). T F L S,

P II, O P, L.

EROCK 2010, R M C E E, J .

F, N., (2003). T S M, M

T S R F. P. D. T, R I

T, L R E, S, S.

F, .A., (1990). F M S S J

A. I: R J.

G, G., (2001) S

. D T, EPFL, L.

G, J.A.; , J.B. (1966). C N F S.

P R S L. S A, M

P S.

J, F, (2009). S S R R J S S

A C D, D T, R I T.

K, P.H.S.., S, G., H, T.H. M, R.M., (1995). N

C .

L, B., A, G. (1970). S

, P 11 .S. S R M.


62/72

E

54

L, J.M., T L.., (1986). T E N S R

A C D F S R. P & A. G.

M, M., (1992). T N, N

.

M, A., (1990). A .

M, B.B., (1983). T . N : . H. F,

M (2007) M, 7.4.0.287, N M, SA.

P, T.T.; H, S.R.; L, A.C., (1995). A

. 18 I. C R M,

T, J.

P, F.D., (1966). M ,

P.D. T, . I.

S, D., M, L., N, E., (2005). L T

R J D S, T C, R M

R E.

T, K. (1925). E, F D, .

T, T.R. (1982) R S. L: L.

, J. (1997). J M , P A: J

M C (JMC).


63/72

A

I

AE A, E EA E

A.1 4 1.

A.2 4 2.

0.5

0.0

0.5

1.0

1.5

2.0

0 1 2 3 4 5

C

()

()

LDT1

LDT2

LDT3LDT4

0.5

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

0 1 2 3 4 5

C()

()

LDT1LDT2LDT3LDT4


64/72

E

II

A.3 4 3.

3

4

5

6

7

8

0 1 2 3 4 5

C()

()

LDT2

LDT3


65/72

A

III

AE B, ABE AE E A EE AE BAE

E

B.1 2.

() ()

2

2 A() () 2 A() ()

0.5 1 0.269 15.051 0.134 0.269 15.040 0.134

1 2 0.253 14.187 0.253 0.253 14.203 0.253

2 4 0.224 12.604 0.447 0.224 12.642 0.449

4 8 0.189 10.692 0.755 0.189 10.725 0.7588 16 0.151 8.576 1.206 0.151 8.598 1.210

16 32 0.114 6.492 1.821 0.116 6.600 1.851

B.2 3.

() ()

3

2 A() () 2 A() ()

0.5 1 0.280 15.642 0.140 0.286 15.982 0.143

1 2 0.266 14.880 0.266 0.269 15.072 0.2692 4 0.240 13.490 0.480 0.241 13.561 0.482

4 8 0.206 11.613 0.822 0.206 11.651 0.825

8 16 0.170 9.637 1.358 0.169 9.603 1.354

16 32 0.130 7.401 2.078 0.128 7.294 2.048


66/72

E

I

AE C, A AE E A EE AE BAE

E

.1 2.

.2 3.

2

= 0.14710.7519

R = 0.9943 2

= 0.14680.7557

R = 0.9948

0.1

1.0

10.0

1 10 100

()

A ()

S2

S2 L

3

= 0.15220.78

R = 0.9952 3

= 0.15560.7701

R = 0.9951

0.1

1.0

10.0

1 10 100

()

A ()

S3

S3 L


67/72

A

AE , A EA CAC AEA A AA

EAE AE

.1

1.

.2

2.

0 10 20 30 40 50 600

0.1

0.2

0.3

0.4

0.5

0.6

0.7


Potentialc

ontactarea

ratio

Actual

Regression

0 5 10 15 20 25 30 35 40 45 500

0.1

0.2

0.3

0.4

0.5

0.6

0.7


Poten

tialcontactarea

ratio


68/72

E

I

.3

2.

.4 3.

0 10 20 30 40 50 60

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7


Potentialcontactarea

ratio

Actual

Regression

0 5 10 15 20 25 30 35 40 45 500

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0.5

Measured dip angle(


ratio

Actual

Regression


69/72

A

II

.5

3.

0 10 20 30 40 50 60 70

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

Measure dip angle ()


ratio

Actual

Regression


70/72

E

III

AE E, E EAE AE AA EA EC

.1

1 ( )

.2

2 ( ).

S

S


71/72

A

I

.3

2 ( ).

.4

3 ( ).

S

S


72/72

E

.5

3 ( ).

S

experimental study of the shear strength of un filled and rough rock

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