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Systematic Drilling and Blasting for Surface Excavations Part 1 docx

Systematic Drilling and Blasting for Surface Excavations Part 1 docx

Systematic Drilling and Blasting for Surface Excavations Part 1 docx

... No.4-24-34-44-54-64-74-84-94-io4 -11 4 -12 4 -13 ,4 -14 5 -1 5-25-35-45-55-65-75-85-95-1o5-ii5 -12 5 -13 5 -14 5 -15 5 -16 5 -17 5 -18 5 -19 m4-24-34-54-64-74-74-94-io4-1o4 -11 4-i24 -13 4 -14 5 -1 5-25-25-35-55-65-7’5-75-85-95-95 -10 5-405 -12 5 -13 5 -14 5-i65 -17 5 -18 viCECW-EGEngineer ... No.4-24-34-44-54-64-74-84-94-io4 -11 4 -12 4 -13 ,4 -14 5 -1 5-25-35-45-55-65-75-85-95-1o5-ii5 -12 5 -13 5 -14 5 -15 5 -16 5 -17 5 -18 5 -19 m4-24-34-54-64-74-74-94-io4-1o4 -11 4-i24 -13 4 -14 5 -1 5-25-25-35-55-65-7’5-75-85-95-95 -10 5-405 -12 5 -13 5 -14 5-i65 -17 5 -18 viCECW-EGEngineer Manual 11 10-2-3800Department of the ArmyU.S. Army Corps of EngineersWashington, DC 20 314 -10 00EM 11 10-2-3800 1 March 19 72Engineering ... Paragraph5-2c5-35-3a5-3a(i)5-3a(2)5-3a(3)5-3a(4)5-3a(5)5-3a(6)5-3a(7)5-3b5-3C5-3C(I)5-3C(2)5-45-4a5-4a (1) 5-4a(2)5-4a(3)5-4a(4)5-4b5-4C5-4d5-5. 5-5a5-5b5-5C6-i6-26-2a6-2b6-2c6-2d6-36-3a6- 3b5-35-45-45-45-55-65-85 -11 5-ii5 -12 5 -12 5-i35 -14 5 -14 5 -14 5 -15 5 -15 5 -19 5-205-205-2i5- 21 5-235-235-245-24”5-256 -1 6A...
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Systematic Drilling and Blasting for Surface Excavations Part 2 docx

Systematic Drilling and Blasting for Surface Excavations Part 2 docx

... cavity.2-3EM 11 10-2-3800 1 Mar 72Standard Storage Magazines, i957, Pamphlet #Safety in the Handling and Use of Explosives, 19 60, Pamphlet i7How to Destroy Explosives, Pamphlet 21 Rules for Storing, ... antici-pated for the future.The drilling and blasting manual for surface exca-vations is the first of this series.Selected references that describe drilling and blasting procedures and results ... regarding blasting progress and anyproblems that arise. 1- 5.Specifications.a. The principalintent of the specifications 1- 2is to inform the●EM ii10-2-3800f Mar 72CHAPTER 2. MECHANICS OF BLASTING 2 -1. ...
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Systematic Drilling and Blasting for Surface Excavations Part 6 docx

Systematic Drilling and Blasting for Surface Excavations Part 6 docx

... iiiO-2-3800I 1 Mar 72CWPTER,5. BASIC SURFACE BMTING TECHNIQUES5 -1. Introduction.a. Rock blasting may be conducted for removal of rock, for con-trol of excavated rock surfaces, and for control ... steelassembly for surface ham-mer drills (figures showdrive- on and threadedconnections)9)TYPICAL STEEL AND SIT ASSEMBLYFig. 4-i O. Bits for down- the- holehammer dril194 -10 EM il10-2-3800i ... techniques used for surface excavations. Information was obtained from CE Districtoffices and projects supplemented inless familiar procedures by references8 and 14 .5-2. Blasting Patterns.a....
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Systematic Drilling and Blasting for Surface Excavations Part 11 docx

Systematic Drilling and Blasting for Surface Excavations Part 11 docx

... 7 -1 7-2EM 11 10-2-3800 1 Mar 72!.I.0t 11 111 IIo. I0. 01 0.0 01 0.00 01 08AI I IIllOomoge criterionv. 2.0 in/seeBureou of MinesmLongeforsa5Edwordsond Northwood *JI 1 II 1 f 1 1[I ... MinesmMajorbngefors et●t.=damage●Edwards and Norttnvood3dataBureau of Mines}MinorLangeforset al.damageEdwards and NorthwooddataI I 1 t I 1 I 1 t 1 1 1 1 tII ! 1 1\ It 1 10 10 0FREQUENCY, ... residentialstructures.7-9EM 11 10-2-3800 1 Mar 72.,00000H;c\o00 000II I II 1 LoDo3°0\ 1. 0D08/W 13 I I [ 1 I I 1. 10 10 0 10 00SCALED DISTANCE QIW1’3, FT/L6 13 Fig. 7-i.Propagation laws for airblast...
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Systematic Drilling and Blasting for Surface Excavations Part 3 ppsx

Systematic Drilling and Blasting for Surface Excavations Part 3 ppsx

... 04ioo 10 0ioo 11 0iio 11 0 11 0 11 0Low-Density Ammonia Dynamite, High-Velocity Series50 1. 2 44,000FairFair 12 045 1. 1 10 ,400Fair Fair 12 9404.0 10 ,000FairFairf3535 1. 09,800 Fair Fair 14 i300.99,400 ... Dynamite605040302060504030206565656565656565656565656565605040302052453525 15 1. 3 19 ,000Good:.4 17 ,000 Fair 1. 4i4,000Fair 1. 4 11 ,500Poor 1. 49,000PoorHigh-Density Ammonia Dynamitei.3 12 ,500Fair 1. 3ii,500Fair 1. 3 10 ,500Fair 1. 39,000Fair 1. 38,000 ... STRENGTH,PERCENTPERCENT 10 09080706050403020 10 10 0908070603020 10 EM 11 10-2-3800 1 Mar 72 CARTRIDGE COUNT,NuMBER OF CARTRIDGESPER sO-POUND BOX80-90-1oo-llo - 14 0. 15 0. 16 0- 17 0.EXAMPLEKNOWN: CARTRIDGE COUNT 13 0KNOWN:...
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Systematic Drilling and Blasting for Surface Excavations Part 4 ppsx

Systematic Drilling and Blasting for Surface Excavations Part 4 ppsx

... .2 12 ,000Very good Very good::40 1. 1 11 ,500 GoodVery good63300.9 10 ,500FairVery good 11 0 10 5ioi9895928885 10 6 10 2ioo979290 11 0 11 8 13 0 15 0Note:Values shown are the averages ... nitrate57.346.237.525 .1 15.2 Ammonium nitrateii.825. i 31. 443 .1 50.3 Carbonaceous fuelio.z8.89.2 10 .08.6 Sulfur6.75.43.6 3.4i.6 Antacid 1. 2 i.i 1. 1 0.8 1. 1 Moisture0.80.80.7 ... Carbonaceous fueli5.4 13 .7i3.8 14 .6 18 .2 Sulfur2.9 2.0 Antacid 1. 3 i.o i .1 1.2 Moisture 0.9 1. 0::! 0.9 1. 2 High- Density Ammonia DynamiteNitroglycerin 12 .0 i2.6i6.5 16 .722.5 Sodium nitrate57.346.237.525 .1 15.2...
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Systematic Drilling and Blasting for Surface Excavations Part 5 ppt

Systematic Drilling and Blasting for Surface Excavations Part 5 ppt

... Bits of this generaltype are available in sizes from 1- through 26-in. diameters and are usedto drill soft formations4-7EM 11 10-2-3800 1 Mar 72.Fig. 4-4. Track-mounted rotary drill (9-in. ... ROCK.vERY HARD ROCK BIT - FOR CHERT, QUA RTZITE, GRANITE, AND eASALT.Fig. 4-5. Roller bits used in quarrying rock ofdifferent hardness94-6EM 411 0-2-3800 1 Mar 723Cx-2C 15 5o0000o00Oo0000eo0eo000000402000*o000°00 ... -3800 1 Mar 72.CHAPTER 4. DRILLING 4 -1. Introduction.a. Factors in selecting a drilling method include rock type, siteconditions, scale of operations, hole diameter, hole depth, and labor and equipment...
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Systematic Drilling and Blasting for Surface Excavations Part 7 ppt

Systematic Drilling and Blasting for Surface Excavations Part 7 ppt

... lb/ftlb/ftlb ft 1 0.42 0 .17 2.i3.824.70.7 17 7.833.8 1. 5 57 ii.546.72.7 13 0 15 .55 10 .54“260 19 .56 15 644023720870027827ili,ioo3i934 13 4,50035Note: Values are only for an ... retain gases and reducenoise and flyrock.Table 5 -1. Charge Concentration of Inclined Holes(i) for Single-Row Bench Blasting for Fragmentation with Respectto Various Burdens and Hole Diameters ... ~ARGE3Fig. 5 -14 . Charge distribution inbench blasting. (See Table 5 -1 for typical charge weights)to the underlying rock is of no concern, and where no natural surface is available for horizontal...
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Systematic Drilling and Blasting for Surface Excavations Part 8 potx

Systematic Drilling and Blasting for Surface Excavations Part 8 potx

... berm)in.lb/ftftfti- 1/ 20.08 30 .17 :- 1/ 23- 1/ 2;- 1/ 20.233- 1/ 24- 1/ 230.344 5- 1/ 23- 1/ 20.54- 1/ 2 6- 1/ 240.65- 1/ 2 7(Courtesy of Almqvist & Wiksell F~rlag AB)hole diameter.These form a surface ... Mar 72Table 5-3. Some Typical Hole Spacings and Diameters,Charge Concentrations, and Burdens for Smooth Blasting (after Langefors and Kihlstr6m14)Drill HoleCharge Con-Burden (thick-Diametercentration ... the bottom and for close hole spac-ing should be much less.(2) Relation to Main Blast. Presplitting and primary blasting are sometimes performed in one operation with the presplit and pri-mary...
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Systematic Drilling and Blasting for Surface Excavations Part 9 potx

Systematic Drilling and Blasting for Surface Excavations Part 9 potx

... conditions”.5-25EM 11 10-2-3800 1 Mar 72Iw 13 0 12 0 11 0 10 090807060.....xT= 1. 90n +45.4T/0m/8x●#mSONIC VELOCITYRECIPROCAL OFTRAVEL TIMEIs /1 1 I 1 Io 10 203040so60ABSOLUTE ... about 15 ,000 fps. Velocitiesin porous rock and medium hard to hard shales are of the order of 7,000to 10 ,000 fps.(2) A zcne of mechanical and ckl~mica] weathering and attack by6 -1 EM 11 10-2-3800i ... heav-ing effect for loosening and moving material.(2) Presplit blasting for a finished rock surface may be moredifficult in highly fractured rock depending partly on the nature and atti-tude...
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