Geo Mechanics And Back Filling
Geo-Mechanics & Back Filling

Mandate of The Research Group: 

To conduct research and development in the field of Geo-Mechanics & Back Filling to determine various physico-mechanical properties of rock, promote safe ground support methods and technologies, ground control solutions for mining industry including stowing and paste filling.


Section 1: Mine Back Filling

Important Achievements of the Section:

Department received National Award for carrying out R & D for use of fly ash for stowing of underground mines, jointly awarded by Ministry of Power, Ministry of Environment & Forest and Department of Science and Technology, Govt. of India.


Section 2: Geo-Mechanics

Important Achievements of the Section:

  1. Introduction of Resin bolting as a system of support in Indian coal mines.
  2. Successful completion of design of support system with Resin grouted rock bolts in all the mines of South Eastern Coal field limited (SECL).
  3. Successful elimination of goaf edge support with Resin grouted rock bolts in depillaring panels of Singareni Company Collieries Limited (SCCL) which reduced the chance of underground accidents due to loosening of cog support.
  4. Publication of 5 research papers in International Journal (SCI -3, Scopus -1, Other -1).
  5. Successful completion of one project in MCL on chair lift man transporting system which will increase the efficiency of mine official as well as workers which would directly affect the production cost of the mine.
  6. Successful instrumentation work from last 10 years at Jitpur mine, IISCO to assess the roof convergence for better safety and productivity of the mine.
  7.  Successful completion of more than 150 research projects related to Rock Mass Characterisation , Support Design and Stability analysis for underground coal mines.

Section 3: Rock Mechanics Laboratory

Important Achievements of the Section:

  1. From the year 2000 to till date nearly 128 nos. of projects have been successfully conducted for various agencies.
  2. Conducted Insitu investigations such as Direct shear test for rock to rock and rock to concrete, Plate load test, Flat jack test, Hydrofracture test for insitu rock mass properties at different location of Lower Subansiri Hydro Electric Project (HEP) & Middle Siang HEP of Arunachal Pradesh, Teesta IV & V HEP of Sikkim, Nimo Bazgo HEP, at Pakal Dul HEP & URI HEP of Jammu & Kashmir.  
  3. Laboratory investigation for borehole rock core samples were carried out to understand the characteristics of intact rock formations mostly from coal measure formations.
  4. Most of these projects are related to study of rock mechanical properties for design of different surface/underground structures of short, medium and long term stability, for safe and cost-effective extraction of coal/metal/non-metal from underground or from surface pits, for Coal bed methane projects etc. 

NameDesignationEmail & phonePhoto
Head of the Research Group
Dr. C. N. Ghosh Chief Scientist & Head of the Mine Back Filling E-mail : cngcmri@yahoo.com
Phone : +91-326-296004/5, Extn: 4266 (O), 09934556098 (M)
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Section 1: Mine Back Filling
Mr. Prashant Principal Scientist E-mail : prashantcmri@yahoo.com
Phone : +91-326-296004/5, Extn: 4316 (O), 09431377071 (M)
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Mr. P. K. Mandal Pr. Technical Officer E-mail : pkm_cimfr@yahoo.com
Phone : +91-326- 296004/5, Extn: 4316 (O), 09431724185 (M)
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Mr. Santosh Kumar Behera Scientist E-mail : skb@cimfr.res.in / skbcimfr@yahoo.com
Phone : +91-326-296004/5 (O), 08986760221 (M)
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Section 2: Geo-Mechanics
Dr. Ajoy Kr. Singh Sr. Principal Scientist Head of the Geo-Mechanics E-mail : cmriajoy@yahoo.co.in
Phone : +91-326-…………… Extn: 4245 (O)
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Mr. Niraj Kumar Principal Scientist E-mail : nk_cmri@rediffmail.com
Phone : +91-326…………… Extn: 4223(O), 09430336630 (M)
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Mr. Avinash Paul Sr. Scientist E-mail : avinashpaul02@yahoo.co.in
Phone : +91-326-2296224 Extn: 4229 (O), 09431124271 (M)
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Mr. Pramod Kumar Sr. Tech. Officer(1) E-mail : prmdcmri@yahoo.co.in
Phone : +91-326-…………… Extn: 4223(O)
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Mr. A. K. Singh Sr. Technician (1) E-mail : pyareashok@yahoo.co.in
Phone : +91-326-…………… Extn: 4223 (O), 08797799284 (M)
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Mr. Binod Gope T. S. E-mail : binod_cimfr@rediffmail.com
Phone : +91-326-…………… Extn: 4229 (O), 09204255611 (M)
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Section 3: Rock Mechanics Laboratory
Mr. Santosh Kr. Singh Sr. Principal Scientist Head of the Rocks Mechanics Laboratory E-mail : santoshks58@yahoo.co.in
Phone : +91-326-2296008 Extn: 4285 (O), 09431122035 (M)
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Mr. J. Buragohain Sr. Scientist E-mail : jburagohain@cimfr.res.in
Phone : +91-326-2296008 Extn: 4285 (O), 09431124143 (M)
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Mr. S K Singh Technical Officer E-mail : sks_cimfr@yahoo.com
Phone : +91-326-2296008, Extn: 4405 (O), 09431315843 (M)
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Mr. Pappu Ravidas Technical Officer E-mail : pappurd@yahoo.com
Phone : +91-326-2296008, Extn: 4405 (O), 08084675963 (M)
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Mrs. Sukhbindar Kaur T. S. Phone : +91-326-2296008, Extn: 4405 (O), 09570201651 (M) Service image
15 Results
Sl. No.A brief description of Facilities/ Equipment/Tools/software with photos
Section 1: Mine Back Filling
1
  1. Laboratory facility to determine Physico-mechanical properties of back fill material.
  2. Numerical modelling software (PLAXIS-3D) for stability analysis of back filled working.
  3. Instrumentation and monitoring of backfilled/stowed panel in underground Mines.
  4. Technology for filling coal ash in underground and opencast coal mines.
  5. Technology of utilizing granulated slag, crushed and washed overburden etc as a filling material.
  6. Paste fill material preparation facility.

Mastersizer 3000 for Particle Size Analysis

Model Study for Stowing

Section 2: Geo-Mechanics
1
Section 3: Rock Mechanics Laboratory
1

Facilities for conducting different laboratory physico-mechanical properties of rock core samples such as Geological Logging, RQD, Density, Porosity, Moisture content, Water absorption, Slake Durability Index, Compressive Strength, Tensile Strength, Direct Shear, Triaxial Strength, Young’s Modulus, Poisson’s Ratio, Point load Index, P & S wave velocity, Protodyakonov index, Mechanical properties of Conveyor belts etc.

 
Sl. No.NameSponsorDurationObjectiveMajor output(if any)
Section 1: Mine Back Filling
1Advice during Field Experimentation of ash stowing at SRP 3 & 3A MineSCCL12 Months

Study for suitability of utilisation of coal ash for stowing at SRP 3 & 3A

2Monitoring of backfilling with overburden and pond ash in open cast mines of JSPLJSPL48 Months

Studies for data collection and monitoring of benches to enhance safety and for environment friendly disposal of coal ash in opencast mines. Laboratory investigation to monitor pond ash filling in admixture with overburden at their captive mines included carrying out field investigation with respect to air quality monitoring, monitoring of sub-surface aquifers, hydrometeorology, ground water flow pattern, water quality in the core and buffer zone of the mine.

3Design of Stowing Plant for SECL Underground Mine for Ash Stowing with Ash from Korba Super Thermal Power Station, NTPCNTPC3

Study on Design of Stowing Plant for SECL Underground Mine for Ash Stowing

4Scientific study on coal ash dumping at opencast mine of Sarguja Power Private LimitedSPPL9 Months

Suitability studies on coal ash sample as an opencast backfill material and to provide the design guidelines for environment friendly dumping of coal ash in admixture with overburden at the nearby captive open cast coal mine.

5Suitability studies on coal ash from RSTPS –NTPC, Jarangdih- CCL, HWP- Manugure for filling of coal minesNTPC6 Months

Suitability studies on coal ash sample as a backfill material.

6Advice during field experimentation of ash stowing at GDK-1& 3 Incline SCCL12 Months

Field studies during ash stowing operations at GDK – 1&3 mines of SCCL regarding various ash stowing parameters. 

7Rock mechanic instrumentation, Stability analysis and strata monitoring for depillaring with stowing at Goleti-1A mine of Bellampalli Area and 4SS-2B panel of 4 seam at GDK 10 Inline, SCCLSCCL24 Months

Rock mechanic instrumentation, Stability analysis and strata monitoring for depillaring with stowing.

8Advice on leaving protection pillar for air shaft during depillaring with stowing at GDK 1 & 3 Incline, SCCLSCCL2 Months

Stability analysis of protection pillar left around air shaft during depillaring with stowing at GDK 1 & 3 Incline,  SCCL

9Advice during field experimentation of ash stowing at GDK-1& 3 Incline, SCCLSCCL12 Months

Field trail of ash stowing at GDK-1& 3 Incline, SCCL

10Advice on the use of bottom ash for underground stowing at RK - 7 Incline, SCCLSCCL24

Advice on the use of bottom ash for underground stowing and field studies during ash stowing operations at RK -  7 Incline, SCCL regarding various ash stowing parameters.

11Advice on the use of ash from, KTPS korba for underground Stowing at SECL MinesCSEB, Chattisgarh6 Months

Feasibility study on utilisation of ash for underground Stowing at SECL Mines

12Advice on Assessment of Stability for an underground part of NH – 2 near Dalmia at Salanpur area of ECL for implementation of Raniganj Master PlanECL6 Months

Identification of exact void location from surface, depth of void from surface, Stability of parting and safety factor, characteristics of the roof rocks in the void area.

13Techno Economic feasibility Study of Stowing with proper material in Seam II and Seam III during depillaring in Gare Palma IV/4 and IV/5 Underground Coal Mines of HILHINDALCO12 Months

To study the feasibility of using bottom ash as filling material at Gare Palma IV/4 and IV/5 Underground Coal Mines with depillaring by hydraulic stowing

14Preparation and evaluation of paste fills for mine backfilling for m/s Hindustan zinc limitedHZL6 Months

Preparation and evaluation of paste fills for mine backfilling

Section 2: Geo-Mechanics
1Advice on design of support system for Chanda Rayatwari colliery, Chandrapur Area, WCL. WCL1 Year

1. Geotechnical studies

2. Characterisation of roof rock.

3. Design of suitable support system.

Extraction of coal would be possible in more safer and economical way.

2Advice on stability analysis of NH-2 near Dalmia at Salanpur Area, ECLECL6 Months

Identification of exact void location from surface, depth of void from surface, Stability of parting and safety factor, characteristics of the roof rocks in the void area.

Stability of the NH-2 will be assessed with desired factor of safety. This would further help the country as well as the locality as NH-2 is the life line of the country.  

3Advice on design of support for installation of Pulley Station of Man Riding Chair Lift System for transportation in Sijua Colliery, Jharia Division, Tata Steel LimitedTata Steel6 Months

1. Rock Mass Classification of the mine drift and gallery.

2. To estimate the rock load height and rock load empirically for the same.

3. To estimate the rock load height and rock load numerically i.e. from numerical models.

4. To design suitable support system for the man riding gallery of IX seam as well as for drift.

5. To suggest the appropriate man riding system for drift and gallery of IX seam workings.

This study help mine management for installation of main riding chair lift system for transportation of mining official and workers which will save time of travelling and also on the another hand , increase the working efficiency of mining people.

4Advice on stability analysis and support design of two inclines at Sial Ghogri mine , Chhindwara, M.P.Reliance Cement Company Pvt. Ltd6 Months

Design of support system with resin bolts based on geotechnical studies of roof rocks. 

Mine management would able to extract coal with proper safety and productivity.

5Advice on design of support for development workings at Sial Ghogri mine , Chhindwara, M.P.Reliance Cement Company Pvt. Ltd6 Months

Design of support system with resin bolts based on geotechnical studies of roof rocks 

Mine management would able to extract coal with proper safety and productivity.

Section 3: Rock Mechanics Laboratory
1Geo-technical studies of rock core sample of BH# CMTL-486 of Lingaraj block, Talcher Coalfield, Odisha and advice there ofMECL3 Month

To determine Compressive strength of coal and Rock Cores and advice after statistical analysis of data.

2Geotechnical investigation on selected rock core sample of BH# KBH-03, KBH-4A and KBH-07 from Koina Project, Karad, Satara (Maharashtra)BGRL, Karad1 Year

Determination of UCS, P & S Wave velocity, Elastic and Triaxial properties of granite core samples to study the reservoir triggred seismicity in Koyna-Warna region.

3Geotechnical investigation to evaluate strength charecteristics of rock core samples from BH# MPRG-12 of Pahardia Block, Distt.- Shighbhum(East), JharkhandMECL6 Month

Rock mechanical property determination from borehole rock samples for Gold mining. 

4Geotechnical investigation to evaluate strength charecteristics of rock core samples of three borehole for ground stability study of proposed MGR alignment, OPGC over u/g coal mine workings in Orient area of MCL, OdishaOPGC, Bhubaneswar2 Year

laboratory investigation on borehole rock core samples for determination and statistical analysis of different rock mechanical properties.

5Geotechnical investigation to evaluate strength charecteristics of rock core samples from Patal East Coal Block of BH # MPBE-13 & 52 in South Karanpura Coal Field, Distt. Ramgarh, Jharkhand and advice there ofMECL1 Year

Determination and statistical analysis of different rock mechanical properties for coal mining.

6Geotechnical investigation of borehole rock core samples of footwall, ore body and hangwall to evaluate different physico-mechanical properties, Matun Mines, Hindustan Zinc LtdHZL1 Year

Rock properties required for conventional shovel dumper combination with 10m bench height at Matun Rock phosphate Mines.

7Geotechnical investigation to evaluate strength charecteristics of rock core samples from BH# 2N of Banhardi Coal Block, Latehar, JharkhandDepartment of Mines & Geology, Ranchi1 Year

Rock mechanical properties required for exploitation of coal from Banhardi coal block.

8Geotechnical investigation to evaluate strength charecteristics of rock core samples from BH# TJU/216/12 of Jamadoba Colliery, Tata Steel LimitedNRD, Jharia, Jamadoba, Dist. Dhanbad3 Month

laboratory investigation on borehole rock core samples for determination and statistical analysis of different rock mechanical properties.

9Geotechnical investigation to evaluate strength charecteristics of rock core samples from BH# 153 & E4-UD-59 of Shankar load and Durga load of the Nuasahi Chromite Mines of IMFA LtdIMFA6 Month

To determine physico-mechanical properties of Chromite ore, body/wall rocks of Shankar & Durga load as a part of their study to determine the optimum thickness of the Crown/Rib pillar for the stopes 

10Rock Mechanics investigation to evaluate strength behaviour of rock cores of Total CBM Solutions India Pvt. Ltd.Total CBM Solutions India Pvt. Ltd., New Delhi6 Month

Determination of UCS & Elastic properties in dry and saturated condition for their study for CBM exploration.

11Geotechnical investigations to evaluate strength charectyeristics of rock core samples from Sitarampur Coal Block, JSW Natural Resources India Limited, and advice there ofJSW Natural Resource India Ltd., Kolkata1 Year

Determination and statistical analysis of different rock mechanical properties of different borehole rock formations for coal mining.

12Advice on geotechnical investigations of Ichhapur Coal Block, JSW Natural Resources Bengal Limited, KolkataJSW Natural Resource Bengal Ltd., Kolkata6 Month

Determination and statistical analysis of different rock mechanical properties of different borehole rock formations for coal mining

13Geotechnical logging to assess Rock Quality Designation of Six (06) boreholes & Geo-technical investigation to evaluate different rock mechanics properties of one borehole of the Raniganj measures at the Trans-Damodar Sector, Coal BlockTrans-Damodar Coal Mining (PVT) Ltd., Kolkata2 Year

RQD and laboratory physico-mechanical property determination along with statistical analysis for borehole rock measure formations

14Geotechnical Investigation to evaluate strengthCharacteristics of rock cores of BH # MMT-85 & 95 from Gare-Pelma sector-II coal block, Maha Tamil project in Mand-Raigarh coalfield, ChattishgarhMECL1 Year

To investigate different physico-mechanical properties of two borehole rock/coal samples as a part of detailed exploration work. 

15Geotechnical investigation to evaluate strengthcharecteristics of borehole rock cores (BH # 01 LW) from Moonidih Mine, W.J. area of BCCLVP (Mining), Indu Projects Ltd., Hyderabad4 Month

To investigate different physico-mechanical properties of borehole rock/coal samples for Longwall mining

16Geo-technical investigation to evaluate differentphysico-mechanical properties of borehole rock samples of BH#MGP-50 from Gare Pelma Block, Mand Raigarh Coalfield, ChattishgarhMECL3 Month

Determination and statistical analysis of different rock mechanical properties of different borehole rock formations for coal mining.

17Geo-technical investigation to evaluate differentphysico-mechanical properties of rock samples from Kuri-Gongri Hydro-Electric Project, Gyelposhing, Bhutan and advice there ofKuri-Gongri HEP Gyelposhing, Bhutan3 Month

Determination of physico-mechanical properties of Quartzite & Dolomite core samples 

18Rock Mechanics investigation to evaluate strength behaviour of rock cores of BH# AKP-01, Kapuria Block from AMR-BBB Consortium, Kamalapuri Colony, HyderabadAMR-BBB Consortium, Hyderabad1 Month

To determine physico-mechanical properties of borehole rocks as a part of their study of mine development and mass production of coal by using Longwall Mechanization.

19Geo-technical investigation to evaluate different physico-mechanical properties of borehole rock samples from Seregarha Block of the North Karanpura Coalfield between Karimati block in the east & Ganeshpur block in the west.Arcelor Mittal India Ltd.1 Year

Determination and statistical analysis of different rock mechanical properties of different borehole rock formations for coal mining.

20Geo-technical investigation to evaluate different physico-mechanical properties of borehole rock samples of BH#MCL04, MCL08 of Mahan Coal Limited, Singrauli Mahan Coal Limited, Singrauli 1 Year

To investigate different physico-mechanical properties of borehole rock/coal samples for coal mining.

21Geo-technical investigation to evaluate different physico-mechanical properties of borehole rock samples of BH#JAR-45 from Rajbar Coal Block, Auranga Coal field, Latehar, Jharkhand and advice there of.Dpt. of Mines & Geology, Hzaribagh1 Year

Rock mechanical properties required for exploitation of coal from Banhardi coal block.

22Geo-technical investigation to evaluate different physico-mechanical properties of borehole rock samples of BH#JAR-65 from Rajbar Coal Block, Auranga Coal field, Latehar, Jharkhand and advice there of.Dpt. of Mines & Geology, Hzaribagh1 Year

To determine physico-mechanical properties of borehole rocks as a part of their study of mine development and coal production.

23Geo-technical investigation to evaluate strength charecteristics rock core samples from BH # MGP-140, MGP-181 of Gare-Pelma (Sector-1) block of Mand Raigarh coalfield, ChattishgarhCMDC1 Year

To determine physico-mechanical properties of borehole rocks as a part of their study of mine development and coal production

24Geotechnical investigation to evaluate strength charecteristics of rock core samples from Sitarampr & Kulti Block, JSW Natural Resources India Ltd., Bhurdwan W.B. and advice thereJSW Natural Resource Bengal Ltd., Kolkata1 Year

Determination and statistical analysis of different rock mechanical properties of different borehole rock formations for coal mining.

25Geo-technical investigation to evaluate different physico-mechanical properties of borehole rock samples from Andal East Coal Block near Andal in Raniganj Coal Field, Burdwan, West Bengal and advice there ofAndal East Coal Company Private Limited, Kolkata6 Month

To determine physico-mechanical properties of borehole rocks as a part of their study of mine development and coal production.

26Geotechnical investigation to evaluate strength characteristics of rock core samples from Ichapur Block, JSW Natural Resources Bengal, Burdwan, W. B. and advice there of.JSW Bengal Steel Limited, Kolkata1 Year

Determination and statistical analysis of different rock mechanical properties of different borehole rock formations for coal mining

27Geotechnical investigation to evaluate strength characteristics of rock cores from Jagannathpur Block A and Block B, Chandi Steel Industries Ltd., Durgapur, W. B. and advice thereof.Chandi Steel Industries Ltd., Kolkata1 Year

Determination and statistical analysis of different rock mechanical properties of different borehole rock formations for coal mining

28Field Rock mechanics investigation pertaining to Rock Quality Designation of 42 boreholes of Jagannathpur Block A & Block B, North of Durgapur for Chandi Steel Industries Ltd., West Bengal and advice thereof.Chandi Steel Industries Ltd., Kolkata6 Months

To determine physico-mechanical properties of borehole rocks as a part of their study of mine development and coal production

29Characterisation of rocks in five boreholes at dam axis of subansiri lower HE project for dam design, gerukamukh, assamNHPC2 Year

To evaluate the physico-mechanical properties in the laboratory and in-situ permeability.

48 Results