JPS56105024A - Excavating method for base rock by oil pressure type clamshell bucket mounted to expansion arm and block for crush - Google Patents

Excavating method for base rock by oil pressure type clamshell bucket mounted to expansion arm and block for crush

Info

Publication number
JPS56105024A
JPS56105024A JP763980A JP763980A JPS56105024A JP S56105024 A JPS56105024 A JP S56105024A JP 763980 A JP763980 A JP 763980A JP 763980 A JP763980 A JP 763980A JP S56105024 A JPS56105024 A JP S56105024A
Authority
JP
Japan
Prior art keywords
crush
block
base rock
oil pressure
rock
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.)
Pending
Application number
JP763980A
Other languages
Japanese (ja)
Inventor
Ryutaro Yoritomi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP763980A priority Critical patent/JPS56105024A/en
Publication of JPS56105024A publication Critical patent/JPS56105024A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To increase the efficiency of excavation work by a method wherein base rock is crushed by means of a block for crush fitted to one oil pressure type shovel and crushed rock is excavated by means of an oil pressure clamshell bucket during the excavation work by means of the bucket.
CONSTITUTION: A boom 2 and an expansion arm 11 supported by means of an oil pressure type shovel body 1 are interlocked while the expansion arm 11 is expanded and contracted by means of a lifting gear 20, a block 33 for crush is grabbed up by means of a clamshell bucket 30, the block 33 for crush is moved just above base rock, the holding of the block for crush is released, the block 33 for crush is let fall on the base rock and an impact is given to the base rock, etc. The base rock in the desired zone is crushed by repeating said operation, rock pieces crushed in the zone are grabbed up by means of the clamshell bucket 30 and discharged outside a pit and the base rock is excavated by alternately using the block for crush and the clamshell.
COPYRIGHT: (C)1981,JPO&Japio
JP763980A 1980-01-25 1980-01-25 Excavating method for base rock by oil pressure type clamshell bucket mounted to expansion arm and block for crush Pending JPS56105024A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP763980A JPS56105024A (en) 1980-01-25 1980-01-25 Excavating method for base rock by oil pressure type clamshell bucket mounted to expansion arm and block for crush

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP763980A JPS56105024A (en) 1980-01-25 1980-01-25 Excavating method for base rock by oil pressure type clamshell bucket mounted to expansion arm and block for crush

Publications (1)

Publication Number Publication Date
JPS56105024A true JPS56105024A (en) 1981-08-21

Family

ID=11671391

Family Applications (1)

Application Number Title Priority Date Filing Date
JP763980A Pending JPS56105024A (en) 1980-01-25 1980-01-25 Excavating method for base rock by oil pressure type clamshell bucket mounted to expansion arm and block for crush

Country Status (1)

Country Link
JP (1) JPS56105024A (en)

Similar Documents

Publication Publication Date Title
CN105781554A (en) Mining method for open coal mine through dragline non-transportation casting technology
SU926288A1 (en) Method for hydraulically deposing muck in stock-piles and tail storage facilities
JPS56105024A (en) Excavating method for base rock by oil pressure type clamshell bucket mounted to expansion arm and block for crush
CN109024638A (en) The hardened stiff plastic argillic horizon excavation construction method of deep water in a kind of steel cofferdam
JPS57133918A (en) Improvement of ground
AU709808B1 (en) Strip mining overburden removal method
JPS6073921A (en) Underwater excavator
JPS5545902A (en) Method of working hole for cast-in-place concrete pile
JPS55152228A (en) Excavation of vertical shaft using clam shell bucket and scoop
JPS5733635A (en) Excavator
RU1774996C (en) Method of forming terraces
SU1511400A1 (en) Method of recovering materials from flooded levels
JPS5744031A (en) Excavator
SU1452886A1 (en) Working member of bucket-wheel excavator
SU1580004A1 (en) Method of open cast mining of mineral deposits
JPS5620243A (en) Excavator with function of discharging excavated soil
SU840246A1 (en) Soil-working machine
RU1828496C (en) Dumping method
JPS5655615A (en) Marine reclamation construction work
SU1231225A1 (en) Method of mechanised mining of thick steep coal seams
RU1772307C (en) Hydraulic mine dump building method
JPH057788U (en) Vertical shaft excavator
RU1828155C (en) Method for trenching by back shovel and back shovel for its realization
SU1089263A1 (en) Method of dump formation
BURT MACHINERY AND PLANT IN CONNEXION WITH CIVIL ENGINEERING CONSTRUCTION.