THE ROTARY SINGLE HEIGHT TELL TALE - ROTARY SINGLE HEIGHT TELL TALE THE ROTARY SINGLE HEIGHT TELL TALE R M T Rock Mechanics Technology

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<ul><li><p>THE ROTARY SINGLE HEIGHT </p><p>TELL TALE</p><p>THE ROTARY SINGLE HEIGHT </p><p>TELL TALE</p><p>R M TRock Mechanics</p><p>Technology</p></li><li><p>25mm Drill a vertical 25mm diameter hole in the roof </p><p>to 4m minimum above the roofline.</p><p>STEP 1</p><p>R M TRock Mechanics</p><p>Technology</p><p>Min</p><p>: 4m</p></li><li><p>Remove the telltale from its packaging.</p><p>Unwind the anchor wire,taking care not to </p><p>tangle the wire </p><p>STEP 2</p><p>R M TRock Mechanics</p><p>Technology</p></li><li><p>Connect together the telltale installation rods</p><p>ensuring the specialadapter is at the top </p><p>STEP 3</p><p>R M TRock Mechanics</p><p>Technology</p><p>Anchor spring adaptorto the top</p></li><li><p>Clip the telltale wireend anchor spring into the adapter at the top of</p><p>the installation rods</p><p>R M TRock Mechanics</p><p>Technology</p><p>STEP 4</p></li><li><p>Place the installation rodsand anchor spring into</p><p>the mouth of the roof hole,ensuring concentricity</p><p>R M TRock Mechanics</p><p>Technology</p><p>STEP 5</p></li><li><p>Make sure the anchor wire ishanging freely, then push</p><p>the rods to the back ofthe roof hole. </p><p>Remove installation rods</p><p>R M TRock Mechanics</p><p>Technology</p><p>STEP 6</p></li><li><p>R M TRock Mechanics</p><p>Technology</p><p>STEP 7</p><p>Slide the telltale reference tube / dial plate assembly</p><p>up the anchor wire and installthe reference tube into the hole.</p></li><li><p>R M TRock Mechanics</p><p>Technology</p><p>STEP 8</p><p>Turn the dial pointer fully anticlockwise until it reaches</p><p>the bottom of its travel </p></li><li><p>R M TRock Mechanics</p><p>Technology</p><p>STEP 9</p><p>Using a pair of pliers,slide the free ferrule from</p><p>the end of the hanging wireuntil it contacts the end of the</p><p>telltale pointer.Carefully position the ferrule on </p><p>the wire such that the telltale indicator is lifted approximately</p><p>1mm of indication off the bottom of its travel, then crimp</p><p>the ferrule lightly </p></li><li><p>STEP 10</p><p>R M TRock Mechanics</p><p>Technology</p><p>Once satisfied with theposition of the ferrule crimpthe ferrule 3 times to secure </p></li><li><p>STEP 11</p><p>R M TRock Mechanics</p><p>Technology</p><p>Remove surplus wire</p></li><li><p>Turn the dial backing plateuntil the zero aligns with</p><p>the pointer </p><p>STEP 12</p><p>R M TRock Mechanics</p><p>Technology</p></li><li><p>BR AR R2 R3 R4 R5L5 L4 L3 L2 L1</p><p>BEL</p><p>T R</p><p>OA</p><p>D</p><p>TRA</p><p>CTO</p><p>R R</p><p>OA</p><p>D</p><p>15</p><p>14</p><p>13</p><p>12</p><p>11</p><p>10</p><p>= ROTARY TELL TALE</p><p>Tell Tales installed as section advances </p><p>SYSTEMATIC TELL TALE MONITORINGFOR NORMAL ZERO SEAM CONDITIONS </p></li><li><p>BEL</p><p>T R</p><p>OA</p><p>D</p><p>TRA</p><p>CTO</p><p>R R</p><p>OA</p><p>D</p><p>14</p><p>13</p><p>12</p><p>11</p><p>10</p><p>15</p><p>M R1 R2 R3 R4 R5L5 L4 L3 L2 L1</p><p>= ROTARY TELL TALE</p><p>= AREA OF CONCERN</p><p>TELL TALE LOCATIONS FOR A SECTION WORKING THROUGH AN AREA OF CONCERN</p></li><li><p>TELL TALES INSTALLED AT INTERSECTIONSSHOULD BE AT THE CENTRE OF THE SPAN</p><p>AND SHOULD BE INSTALLED BEFORE THEJUNCTION GEOMETRY IS FORMED</p><p>R M TRock Mechanics</p><p>Technology</p><p>X</p><p>X</p><p>XX</p><p>X</p><p>X</p><p>Road excavated just past junction.Tell tale installed at the junction centre following support .</p><p>Three way geometry formed Four way geometry formed</p><p>STEP 1: STEP 2: STEP 3:</p><p>This sequence illustrates the ideal timing of tell tale installation in relation to geometry formation to maximise the effectiveness of the tell tale. </p></li><li><p>CROSS SECTION</p><p>PLAN</p><p>CROSS SECTION</p><p>PLAN</p><p>0.6m</p><p>0.6m</p><p>Tell Tale Tell Tale</p><p>Tell Tale</p><p>Tell Tale</p><p>SLIP</p><p>SLIP</p><p>SLIP</p><p>SLIP</p><p>WEAK SIDE</p><p>R M TRock Mechanics</p><p>Technology</p><p>WEAK SIDE</p></li><li><p>BOLTS SHOWN ARE IN ADDITION TO NORMAL SUPPORT AND MUST BE AT LEAST 0.5m LONGER THAN HEIGHT OF BROW</p><p>NO</p><p>RM</p><p>AL </p><p>PA</p><p>TTE</p><p>RN</p><p> R</p><p>ES</p><p>UM</p><p>ED</p><p>ADDITIONAL BOLTS WITHIN0.3m OF BROW @ </p><p>1.0m SPACINGS (max)</p><p>TELL TALE APPRROX 0.5mFROM BROW @</p><p>ROADWAY CENTRE </p><p>BROW</p><p>LOW SIDE</p><p>HIGH SIDE</p><p>INCREASED BOLTDENSITY FOR 3 ROWS </p><p>FROM BROW</p><p>NORMAL PATTERN RESUMED</p></li><li><p>NORMAL PATTERN RESUMED</p><p>3 ROWS ATHIGHER BOLT DENSITY0.3m</p><p>max </p><p>BROW</p><p>TELL TALE</p><p>NORMAL PATTERN</p><p>SECTION</p></li><li><p>REFERENCE CODES FOR TELL TALESINSTALLED IN A SECTION </p><p>SECTION / ROAD / LEVEL</p><p>R M TRock Mechanics</p><p>Technology</p><p>L5</p><p>L4</p><p>2R 1RX/ 1R-2R / L5 X / 1R / L5 </p><p>X / 1R / L4-L5</p></li><li><p>READING TELL TALESREADING TELL TALES</p><p>R M TRock Mechanics</p><p>Technology</p><p>It should be the the responsibility of the MINER each shift torecord the tell tales by colour for all active areas in the section.</p><p>A book should be kept at the section WAITING PLACE in which eachshifts tell tale readings are recorded.</p><p>Where a colour change takes place this should be reported on theShift Bosss statutory shift report, together with comment on any remedial actions taken. In addition the Shift Boss should record the millimetre reading of the relevant tell tales.</p><p>EACH SHIFT</p><p>READ BY COLOUR :-</p><p>GREENYELLOW, OR</p><p>RED</p><p>IF A COLOURCHANGE </p><p>TAKES PLACE</p><p>READ BY NUMBER</p></li><li><p>READING TELL TALESREADING TELL TALES</p><p>R M TRock Mechanics</p><p>Technology</p><p>Once per week, the MINER should, in addition to recording hisshiftly observations by colour, record the millimetre reading on each tell tale in his section (active areas).</p><p>This information should be recorded on a weekly sheet, which should be passed to the nominated ROOF CONTROL AUDITOR for trend analysis.</p><p>EACH WEEK</p><p>READ BY MILLIMETRES :</p><p>0 mm</p></li><li><p>ACTION LEVELSACTION LEVELS</p><p>R M TRock Mechanics</p><p>Technology</p><p>GREEN 0 - 5 mm</p><p>YELLOW 5 - 10 mm</p><p>RED 10 mm +</p><p>GREEN 0 - 5 mm</p><p>YELLOW 5 - 10 mm</p><p>RED 10 mm +</p></li><li><p>ACTIONSACTIONS</p><p>R M TRock Mechanics</p><p>Technology</p><p>GREEN No action required, continue routine monitoring</p><p>YELLOW Install additional reinforcement. Length and typeof support to be determined by investigationsco-ordinated by Shift Boss / Mine Overseer / RoofControl Officer.</p><p>RED Restrict access. Consult Shift Boss / Mine Overseer /Roof Control Officer.</p></li><li><p>GOLDEN RULEGOLDEN RULE</p><p>IF YOU SEE ANY TELL TALEIN YELLOW SECTOR</p><p>INFORM YOUR SUPERVISOR</p><p>IF YOU SEE ANY TELL TALEIN YELLOW SECTOR</p><p>INFORM YOUR SUPERVISOR</p><p>R M TRock Mechanics</p><p>Technology</p></li><li><p>GOLDEN RULEGOLDEN RULE</p><p>IF YOU SEE ANY TELL TALEIN RED SECTOR</p><p>WITHDRAW FROM AREAAND INFORM YOUR </p><p>SUPERVISOR</p><p>IF YOU SEE ANY TELL TALEIN RED SECTOR</p><p>WITHDRAW FROM AREAAND INFORM YOUR </p><p>SUPERVISORR M TRock Mechanics</p><p>Technology</p></li></ul>

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