Development Of Roof Stitching As A Method Of Support In Indian Coal Mines

Singh, B.
Organization: International Conference on Ground Control in Mining
Pages: 6
Publication Date: Jan 1, 1990
The use of wire ropes has already been tried in a few countries for roof support In mines. But the use of scrap wire ropes, as a method of support on extensive scale has not been reported from anywhere except India. Extensive trials using freshly discarded wire ropes for roof support were undertaken both in the laboratory and field. In laboratory, model beams supported with different reinforcing techniques were tested to evaluate their comparative load bearing capacity vis-a-vis reinforcing factor. Among all the tests, the model supported with wire rope system at 60° angle in combination with two supplementary vertical bolts offered the best result 1.e. about 95% reinforcement. It also accepted post fracture loading of the beam. In statical analysis too, the best result could be obtained with the rope installed across the gallery at 60° angle. All these findings are in conformity with the field observations obtained during roof stitching practices in coal mines. Of late, roof stitching, an effective and economical method of roof support developed at CMRS, India in 1972, found wide application in over 200 coal mines. In this method, a freshly discarded wire rope is grouted across a gallery in two inclined drill holes supplemented with two middle vertical roof bolts at every 1.0 to 1.2 m interval along the gallery. It is tensioned against the roof using wooden sleepers and thus, the whole system functions like a roof truss.
Full Article Download:
(1727 kb)


Additional chapters/articles from the SME-ICGCM book Ninth Conference on Ground Control Mining Proceedings (ICGCM) 9th

Multiple-Seam Mining - A State-Of-The-Art Review
Design Aspects In Multiple-Seam Mining: Case Studies
Jenmmar Compression Roof Control System
Specialty Truss System And Their Performance
A Case Study Of Grouted Roof Bolt Loading In A Two-Entry Gat
Analysis And Field Testing Of Presupport Application In Coal
Development Of Roof Stitching As A Method Of Support In Indi
Control Of Roadway Closure In Underground Coal Mines By Side
An Application Of Fem Back Analysis Method To Mine Roadway
Controlled Blasting During Drifting In Hard Rock Mine
Field Test Results On Dyna-Rok And Dyna-Rok Plus Anchors
Mine Pillar Stability Analysis Using Fem Methods - Two Case
An Analytical Approach For The Estimation Of Pillar Strength
International Conference On Ground Control In Mining Design
A New Rock Mass Failure Criteria Based On Rate Of Movement
Practical Consideration In Longwall Support Selection
Mine-Wide Monitoring Applications In Ground Control Research
Longwall Stability Analysis Of A Deep, Bump-Prone Western Co
Stability And Control Of Immediate Roof Of Fully Mechanized
An Analysis Of Longwall Shield Cycle Effectiveness By Polyco
The Impact Of Three Longwall Coal Mines On Streamflow In The
Progressive Failure Of The V-Day Mine And A Comparison With
Controlling Subsidence Effects Using Partial Backfilling
Potential Of A Void Diffusion Model To Predict Longwall Subs
The Use Of Rim- To Detect Geologic Anomalies In The Clarion
The Effect Of Hazardous Geologic Structures On Gateroad Stab
Improved Source Location And Evaluation Of Seismic Events Ov
Application Of Short-Term Time-Dependent Plate Loading Tests
Determination Of Classification Parameters For Clay - Bearin
Intrinsic Response Of Borehole Pressure Cells Laboratory Cal
Application Of Sliding Roof Bar Powered Support For Thick-Se
Drainage Of Water From Abandoned Mines By Horizontal Drillin
A Statistical Analysis Of Falls Of Ground In South African C
Three-Dimensional Analysis Of Mine Dump Point Stability
Birth Of A Longwall-Initial Planning To Post-Subsidence Miti
Progressive Hangingwall Caving And Subsidence Prediction At