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Mobile application technology in levelling for Mining Engineering

Question:

Discuss about the Report of Mobile application technology in levelling for Mining Engineering.

Answer:

Station

E (m)

N(m)

A

-21226.98

-140959.77

B

-20944.56

-141107.20

C

-23763.67

-141101.13

D

-24728.79

-141121.39

 
The rise of the fall in the height of the collimation methods of booking levelling methods is about the triangle having the different coordinates in different angles.
 
The simple technique of erect and linear collimation is ensuring that the reading is possible for the study.
 
The technique of triangulation is that the coordinates of the points have been calculated for the target points. The techniques of trilateration the working with the distances have been done so that the angles can be computed.
 

BS

IS

FS

Remarks

0.599

0.672

0.653

BM 58.031 m AOD

2.587

2.897

3.132

A

2.534

1.565

1.7823

B

1.624

1.911

1.834

C

0.567

0.376

0.768

D

2.244

 

1.522

E

3.421

3.771

3.872

F

1.334

 

1.985

G

0.678

0.601

0.752

H

1.589

0.578

2.002

I

Yes according to the readings a lorry of 4.1m can pass under the bridge.

Staff readings

Distance from A

Remarks

1.759

0

BS to A

0.652

40 m

IS

0.091

80 m

FS

1.689

 

BS

0.430

120 m

IS

0.917

160 m

FS

0.680

130m

BS

0.671

200 m

IS

0.494

240 m

FS

2.243

                       390m

BS

1.682

280 m

IS

0.216

320 m

FS

1.520

370m

BS

0.686

360 m

FS to B

 

BS

IS

FS

Distance (m)

Remarks

3.094

2.789

2.563

0

Point A

3.672

2.694

2.786

20

Above datum

2.310

2.532

2.344

40

Above Datum

2.654

2.027

2.897

60

Not on Track

1.283

1.478

1.676

80

Point B

2.783

0.829

0.846

100

Point A

2.502

2.346

1.692

 

Not on track

3.762

1.146

0.762

120

Point A

3.462

0.725

0.891

140

Point A

3.879

3.723

0.332

160

Point B

 

Backsight

Intersight

Foresight

Height of

Collimation

RL

Distance

Remarks

1.85

1.65

1.78

88.41

84.03

0m

BM

1.97

4.27

1.32

88.78

89.04

30m

BF

1.78

2.65

2.87

88.92

85.76

60m

CP

1.67

1.78

0.23

91.80

83.87

90m

CP

1.50

1.63

2.89

96.24

98.35

120m

CP

1.69

1.98

0.52

97.98

97.52

150m

CP

1.42

0.97

0.56

92.67

92.00

180m

CP

1.47

0.72

0.67

93.67

92.25

210m

CP

1.81

1.02

0.41

91.87

91.95

240m

CP

1.62

1.10

0.871

95.87

91.87

270m

CP

1.89

1.43

0.678

98.24

91.76

300m

CP

2.89

1.74

0.981

91.63

94.72

180m

Last RL – First RL

9.69

1.78

0.89

92.76

98.64

230m

= 8.80

i)Correct length=50-49.95= 0.5m

ii) The reduced horizontal length used in plotting the survey is 236.78m

iii) The reading is 276.02m

Bay

Length (m)

Difference in level (m)

1

26.898

+ 0.382

2

26.950

- 0.234

3

26.883

+ 0.271

4

26.901

- 0.075

The length of the line is 0.672m

The gradient of the existing slide slope is 4.60m and the additional width of 1.65m is added.

The correct depth of the mineshaft is 463.87m

Plan Lengths (m)

Included angles

 

RO-P-Q = 138°15’00”

PQ = 251.23

P-Q-R = 225°36’00”

QR = 213.67

Q-R-S = 272°42’00”

RS = 273.44

R-S-P = 281°14”00”

SP = 388.00

S-P-Q = 300°24’00”

The adjusted coordinates of the Q-R-S is 178°21’06”

Horizontal

 

Line

Length

Angle

Value

 

 

RO1-A-B

85°27’38”

AB

113.630

 

 

 

 

A-B-C

141°41’20”

BC

110.570

 

 

 

 

B-C-D

152°28’44”

CD

129.380

 

 

 

 

C-D-E

255°18’02”

DE

138.400

 

 

 

 

D-E-RO2

139°20’26”

 
The grid coordinates of P (12378.54m E, 7833421.3m N)
 

Horizontal

 

Line

Length

Angle

Value

 

 

 

 

XY

260853.2

38°41’

376183.7

 

 

 

 

XP

260985.6

23°16’

376.812.3

 

 

 

 

 XZ

260955.0

38°41’

377387.6

True north describes the north point situation along with its direction unit and angle description. Magnetic north describes about the saturation point of both horizontal and vertical angles. Whole circle refers to the bearing segments all angles that are needed to be calculated.

Angle A

42°47’55”

AB

329.88m

B

135°37’30”

BC

181.60m

C

137°31’50”

CD

265.15m

D

44°02’30”

DA

650.14m

 

Station

Included angle

A

122°42’20”

B

87°16’40”

C

133°08’20”

D

125°55’20”

E

92°47’40”

F

158°06’40”

Borehole

Easting

Northing

Level above datum

Depth to orebody

A

2960

1920

90

400

B

4020

2850

260

300

C

4970

1830

100

500

D

3680

430

390

800

The actual length of the divage is 462.5.

The coordinates of the point at which it meets the lower roadway is 4169.

B = 82.40m w

C = 84.23 e

D = 80.12 N

27.

Station

Clockwise Angle

Length (m)

A

B C D E

260° 31’ 18”

 

123° 50’ 42”

 

233° 00’ 06”

 

158° 22’ 48”

 

283° 00’ 18”

 

129.352

 

81.700

 

101.112

 

94.273

Horizontal distance from A to B is 200 m

A

AE = 2075

Two methods are used to transfer coordinates from surface to underground such as GPS system and another is GSM system.

One of the process of doing mine surveying is the SVY2302 mine surveying.

GPS stands for global positioning system. By the GPS system any place or element can be tracked. GPS system is worked on the principle of transmitter and receiver. Hen transmitter sends the signal receivers accept all those signals through suitable channels. Through this process tracking activity can be done.

BS

IS

FS

Height of

Instrument

RL

Remarks

3.21

2.02

0.78

279.08

277.65

BM

3.12

2.01

0,67

213.89

265.09

BM

2.98

2.34

1,05

299.06

278.07

BM

3.37

1,78

0.40

234.56

278.68

TBM

3.45

2.98

1.09

266.09

277.45

BM

3.98

1.41

0.87

276.12

280.64

TBM

4.12

2.0

0.98

298.09

281.37

TBM

The answer of circle bearing is 75 degree.

Value of the co-ordinate= 45025/40//

Contour (m)

190

188

186

184

182

Area (m2)

3150

2460

1630

840

210

It was asked to calculate the volume of the water in the lake between the   182 and 190 contours. After the calculation the result is 132m^3.

Grid Co-ordinates

Ground Level (m)

Easting

Northing

100

100

87.6

200

100

89.0

300

100

90.0

100

200

88.4

200

200

89.7

300

200

90.8

100

300

89.3

200

300

90.6

300

300

91.9

Co-ordinate of the borehole is (200,200)

Overall volume of the overburdened gridded area is 50m^3.

References

Bednarczyk, M. (2014). Mobile application technology in levelling. Acta Geodynamica et Geomaterialia, pp.1-5.

Blackburn, J. (1968). Self-levelling venous pressure transducer. BMJ, 4(5634), pp.825-825.

Collier, R. (1988). Mine surveying at Newlands. Australian Surveyor, 34(4), pp.381-399.

Connell, T. (n.d.). The feasibility and accuracy of modulated electron radiation therapy delivery and the design of novel scattering foils.

Culp, R., Gravseth, I. and King, N. (1995). Polarization signals of several common spacecraft materials. [Washington, D.C.: National Aeronautics and Space Administration].

LE NEVE FOSTER, C. (1888). Mine-Surveying. Nature, 38(979), pp.317-318.

Levelling agents for powder coatings. (2000). Metal Finishing, 98(4), p.86.

Speight, J. (2011). An Introduction to Petroleum Technology, Economics, and Politics. Hoboken: Wiley.

Subramanian, R. (2012). Surveying and levelling. New delhi: Oxford university press.

The Action of Electric Currents on Mine Surveying Instruments. (1896). Sci Am, 42(1077supp), pp.17214-17215.

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