Model of Overlying Strata Structure in Large Mining Height Excavating Condition and Calculation of Support Working Resistance

<table class="table-group" id="tab7"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Pattern</td><td class="align_center">Four-column support shield</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Height (lowest/highest)</td><td class="align_center">2800/6000 mm</td></tr><tr><td class="align_left">Width (minimum/maximum)</td><td class="align_center">1660/1860 mm</td></tr><tr><td class="align_left">Center distance</td><td class="align_center">1750 mm</td></tr><tr><td class="align_left">Setting load</td><td class="align_center">10128 kN</td></tr><tr><td class="align_left">Working resistance</td><td class="align_center">13000 kN</td></tr><tr><td class="align_left">Specific pressure in front of bottom plate</td><td class="align_center">1.0∼3.5 MPa</td></tr><tr><td class="align_left">Support strength</td><td class="align_center">1.24∼1.28 MPa</td></tr><tr><td class="align_left">Pumping station pressure</td><td class="align_center">31.5 MPa</td></tr><tr><td class="align_left">Maneuverability pattern</td><td class="align_center">The control of this frame</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The main support technical parameters of the ZZ13000/28/60.</div>

Geofluids

tab7

Table 7

Table 7: Model of Overlying Strata Structure in Large Mining Height Excavating Condition and Calculation of Support Working Resistance 