US131995A - Improvement in methods of blasting rock - Google Patents
Improvement in methods of blasting rock Download PDFInfo
- Publication number
- US131995A US131995A US131995DA US131995A US 131995 A US131995 A US 131995A US 131995D A US131995D A US 131995DA US 131995 A US131995 A US 131995A
- Authority
- US
- United States
- Prior art keywords
- rock
- improvement
- methods
- depth
- sand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000011435 rock Substances 0.000 title description 14
- 238000005422 blasting Methods 0.000 title 2
- 239000004576 sand Substances 0.000 description 16
- 239000000463 material Substances 0.000 description 8
- 238000004880 explosion Methods 0.000 description 6
- 239000002360 explosive Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-Pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920000638 styrene acrylonitrile Polymers 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
- F42D1/10—Feeding explosives in granular or slurry form; Feeding explosives by pneumatic or hydraulic pressure
Definitions
- sand is highly advantageous, mainly for the following reasons: First, it is readily accessible in nearly all localities, and costs little more than the labor involved in digging it; second, it forms a solid, impene trable bed upon which to rest the charge, so that the explosive force of the latter may be 'expended at the desired point with the greatest eiect; third, it is easily placed in or removed from the drill-hole by simple means, or without the aid of tongs, grappling-irons, or any other peculiar apparatus. H
Description
lJ. BRODIE &'S. H. WHEELER.
lmprovemeht in Method f Blasting Rock.
N0. 131,995. Patented Oct. 8, 1872.*
UNITED STATES PATENT OEEIcE.
JAMES EnoDIEl AND sAMUEL E. WHEELER, or SAN EEANcIsco, GAL.
l IMPROVEMENT IN MErIHoDsfoF BLAsTlNc-s RocK.r
Specilcation forming part of Letters Patent No. 131,995, dated October 8, 1872.
To all whom it may concern:
Be it known that we, JAMES BRoDLE and SAMUEL H WHEELEInV of the city of San Francisco, county of San Francisco, and State of California, have Vinvented an Improvedoriginalface ofthe rock is reached. This plan is expensive, in consequence of thetime spent in removing and replacing the drilling apparatus and the excavating incident to each step ofthe work. It has, hence, been proposed to drill the hole at the outset to the depth of a hundred` feet ormore, or to the whole depth to which it is proposed to excavate, and' to fill it with iron bolts or -plugs up to the point where itis proposed to locate the iirst charge.
` For the second charge the plugs are removed to aI cert-ain additional depth, and so on until the work of blastin g is'eomplete, the dbris or broken rock being removed subsequent to each explosion. But serious objections lie against this method, so that, as far as We are aware, its practicability has not been established.
Our invention obviates these objections; and
to this end it consists mainly in the employment-of sand, or equivalent loose material, to constitute a lilling for the drill-hole.
In practice we drill holes in a shaft toa depth of one hundred feet from the face of the rock and lill them up to within three feet from the face with loose sand, and place the charges of explosive material in the holes on the top of the sand. After the charges have been ex ploded and the detached rock cleared away we remove the sand from the holes to a depth of three feet and insert other charges, which We explode, and continue thus until the rock has been excavated tothe bottom of the holes. We then make other holes to a depth of one :hundred feet and proceed as before, and so on to any depth required, until we have excavated to the bottom-of the shaft.
The use of sand is highly advantageous, mainly for the following reasons: First, it is readily accessible in nearly all localities, and costs little more than the labor involved in digging it; second, it forms a solid, impene trable bed upon which to rest the charge, so that the explosive force of the latter may be 'expended at the desired point with the greatest eiect; third, it is easily placed in or removed from the drill-hole by simple means, or without the aid of tongs, grappling-irons, or any other peculiar apparatus. H
We claim as our-as invention- The method of `blastingrock by means of sand as a filling material for the drill-hole,
said hole being first bored to a depth requisite for insertion and explosion of several charges,
and the sand, or other equivalent material, be-
ing removed therefrom subsequent to each exi plosion to enable the succeeding charge to be placed in the hole to the depth required for the next explosion, the sand in every instance forming a bed for the charge, as specied.
' J AMES BRODIE. i
SAMUEL H. WHEELER. Witnesses:
WILLIAM MOODY, 'Wt Z. BROMLEY.
Publications (1)
Publication Number | Publication Date |
---|---|
US131995A true US131995A (en) | 1872-10-08 |
Family
ID=2201412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US131995D Expired - Lifetime US131995A (en) | Improvement in methods of blasting rock |
Country Status (1)
Country | Link |
---|---|
US (1) | US131995A (en) |
-
0
- US US131995D patent/US131995A/en not_active Expired - Lifetime
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20040089450A1 (en) | Propellant-powered fluid jet cutting apparatus and methods of use | |
KR20170012881A (en) | The way for drilling blasting hole in underwater rock with two type of DTH hammer and installing explosive | |
US2638323A (en) | Means and method of removing cores | |
US131995A (en) | Improvement in methods of blasting rock | |
CN104033155A (en) | Novel tunnel smooth surface digging rock drilling equipment and construction method of novel tunnel smooth surface digging rock drilling equipment | |
US2650476A (en) | Dowel rod anchor | |
US1278932A (en) | Method of sapping or destroying trenches or other defensive works. | |
Rubtsova et al. | Hydraulic fracturing stress measurement in underground salt rock mines at Upper Kama Deposit | |
US2197991A (en) | Tool for straightening well bores | |
US1285712A (en) | Horizontal-drilling machine. | |
US411886A (en) | Casing for artesian wells | |
DE44422C (en) | Method of loading wells | |
US20200370392A1 (en) | Ultrashort plug | |
US115115A (en) | Improvement in sinking shafts and excavating tunnels and cuttings | |
US442678A (en) | Method of blasting | |
US1546630A (en) | Combination cutting and rolling tool | |
US460545A (en) | Method of driving tunnels oe sinking shafts | |
US147254A (en) | Improvement in the methods of blasting | |
US351959A (en) | Method of blasting earth | |
SU1263868A1 (en) | Method of controlling the strained state of rock about mine working | |
US288706A (en) | Blasting-tool | |
US457770A (en) | Sinking shafts in the earth | |
US496317A (en) | Enlarging under reamer for oil or artesian wells | |
US185447A (en) | leconte | |
CN101082475A (en) | Blasting method of vertical hole |