亭南煤矿一盘区建筑物下开采技术研究(1).pdf

万方数据 万方数据 200m 0.05 1/51/4H 80120m90130m A.H.WilsonFLAC3D 350mm-1.0mm1.2mm1.5mm/m 万方数据 Subject Research on mining technology of No.1 pane under buildings in Ting Nan Coal Mine Specialty Mining Engineering Name Zhang Dongxin Signature Instructor Yu Xueyi Signature ABSTRACT Mining depth of Ting Nan Coal Mine is quite large, and the surface of the loess plateau is covered by ravines. In the overlying rock, the sandstone of the Luohe ation is common in the overlying about 200m, and the thick loess layer is covered with the surface, and the geological and mining conditions are special. There are a large number of villages in the area of the well field, which cause the large amount of coal pressure under the village, seriously affect the normal mining and continuity of the mine, and restrict the sustainable development of the mine. It is of great significance to study the law of surface movement and deation in the mining of ting Nan Coal Mine. On the basis of the analysis of the geological and mining conditions, the results of the observation of the surface movement of the West Wing in a region are studied on the basis of the geological and mining conditions. The results show that the sandstone of the sandstone of Luohe ation has a control effect on the subsidence of the surface. Under the condition of extremely insufficient mining, the surface movement and deation are very small, the subsidence rate is only 0.05, it will not cause damage to the surface building facilities, and the coal mining under the building can be carried out directly. When the mining degree is greater than the critical mining degree, the subsidence value of the surface is obviously increased, the mining width under the building should be controlled at 1/5 1/4H Within. On the basis of the analysis of the geological and mining conditions and the distribution, structure and anti deation ability of the surface buildings, combined with the application conditions of the mining s under various buildings and the mining experience under the East Wing building, it is determined that the strip mining under the building is adopted. The probability density function is applied to determine the width of strip mining in the range of 80 120m, and the width of strip coal pillar is between 90 130m. Using the theory of pressure arch and the theory of A.H. Wilson coal pillar, the stability of the strip coal pillar is calculated, and the calculation simulation of the mining scheme is carried out with the 万方数据 FLAC3D software, and the parameters of the strip mining are determined. The surface movement and deation prediction of strip mining program is carried out. The results show that the surface subsidence of the protected building area is small, the maximum subsidence is not more than 350mm, the horizontal deation is between -1.0mm1.2mm, the maximum tilting deation is within 1.5mm/m, and the maximum horizontal deation and the tilting deation are less than the fortification standards of the surface buildings The designed strip mining scheme meets the existing production technical conditions in the ting Nan Coal Mine, which can provide reference for the mining design under the village of the ting Nan Coal Mine, and has a certain reference value for the coal mining under the village of bin Chang mining area Keywords Surface movement and deation; great mining depth; Strip mining; Numerical simulation; Subsidence prediction Thesis Application research 万方数据 I 1 ........................................................................................................................................ 1 1.1 .......................................................................................................... 1 1.1.1 ............................................................................................................ 1 1.1.2 ............................................................................................................ 2 1.2 .......................................................................................................... 3 1.2.1 ............................................................................ 3 1.2.2 ........................................................................ 4 1.2.3 ............................................................................................ 6 1.2.4 .................................................................... 8 1.2.5 ................................................................ 8 1.3 .................................................................................................. 9 1.3.1 ............................................................................................................ 9 1.3.2 .......................................................................................................... 10 2 .......................................................................................................... 11 2.1 .................................................................................................................... 11 2.2 .................................................................................................................... 15 2.3 .................................................................................................................... 15 2.3.1 .................................................................................................................. 15 2.3.2 .............................................................................................................. 16 2.3.3 .................................................................................................................. 17 2.3.4 .......................................................................................... 17 2.4 ........................................................................................................ 18 2.5 .................................................................................................................... 19 3 ...................................................................................... 20 3.1 ........................................................................................................ 20 3.2 ................................................................................................................ 20 3.3 ........................................................................................................ 21 3.3.1 .................................................................................................. 21 3.3.2 .......................................................................................... 23 3.3.3 .................................................................................. 24 3.3.4 .................................................................................................. 24 3.4 .................................................................................................................... 25 万方数据 II 4 ...................................................................................................................... 26 4.1 .................................................................................... 26 4.1.1 .................................................................................................. 26 4.1.2 ...................................................................................... 28 4.2 ................................................................................................ 28 4.3 .................................................................................................................... 30 5 ...................................................................................................... 31 5.1 ........................................................................................................ 31 5.1.1 .............................................................................. 31 5.1.2 .......................................................................... 34 5.2 ................................................................................................ 37 5.2.1 .......................................................................................................... 38 5.2.2 .............................................................................................. 39 5.3 ............................................................................................................ 41 5.4 .................................................................................... 44 5.5 .................................................................................................... 45 5.5.1 .......................................................................................... 45 5.5.2 .......................................................................................................... 45 5.5.3 ...................................................................................... 47 5.6 ............................................................................................................................ 49 6 .................................................................................................. 51 6.1 .................................................................................... 51 6.1.1 .......................................................................................................... 51 6.1.2 .......................................................................... 53 6.2 .................................................................................................................... 57 6.3 ............................................................................................................ 58 6.4 .................................................................................................................... 58 7 ...................................................................................................................................... 60 .......................................................................................................................................... 61 .................................................................................................................................. 62 万方数据 1 1 1 1.1 1.1.1 61[1] [2] [3-4] 500m200m 100m 101103109111113 107106108110 1166 1.1 64.4m2 62 万方数据 2 1.1 1.1.2 万方数据 1 3 1.2 1.2.1 1 19 [5] 1858Gonot Tao ritz 1876Jicinsky [6] 1882Gexiha [7] 1885 [8] 20 1929Keinhorst 1932 1942Perz [9] 1948 [10] 1951KontheBudyk [11] 1953 1957 2 万方数据 4 1962-1965 [12] [1314] r [15] [16] [17-18] [19-21] [22-23] [24-26] [27] 1.2.2 1 19 [28] [28-30] 万方数据 1 5 [28] 2 60 2070 50 [4] [28-29] [31] [32] 万方数据 6 [33] [3] [35-38] 40 [36] [39] [41-42] [42] 1520[43] [44] [45] 1.2.3 万方数据 1 7 [46] 1050m [47] [48] [49] [50] [51] [52] [53] [54] [55] [56] [57] 100200m 1/3 1/3 [58] [59] 万方数据 8 [60] [61] [62] [63] [64] [65] 1.2.4 100m [66] FLAC3D [67] [68] [69] [70] [71] 1.2.5 200m 万方数据 1 9 [72] [73] [74] [75] [76] 1.3 1.3.1 1 500m200m 100m 2341166 2 3 万方数据 10 4 A.H.WilsonFLAC3D 5 1.3.2 1.2 1.2 万方数据 11 2 2.1 K1lK1h T3hJ1f J2yJ2zJ2aK1y K1lK1hNQ1-2 Q3Q42.1 2.1 2.1 m Q4 010 Q3 58 Q2 6080 10 Q1 N 6080 K1h 万方数据 12 K1l 89.306 340.8307.752 K1y 90.25 47.706.44 512mm15mm J2a J2a 08.26 44.806.44 - J2z 47.21 39.271.51 J2y 4 J1f T3h - 万方数据 13 2.2 万方数据 14 2.2 万方数据 15 2.2 1700m 3.2km2.0km6.4km2 1010m845m165m 2.33570 420550m 100m 2.3 2.3 2.3.1 4520m 万方数据 16 420m2.44 41.0018m2.54 9.10m2.5 50.40m 2.4 4 2.5 2.3.2 4 万方数据 17 5.37.9m 7.1m 011.49m5.75m 1.64m 13.4m 2.3.3 1 - -43W1 NE4.3km2450 70m4670100m 2 3 2.3.4 5 1 2 31.40m48.1MPa 37m 3 万方数据 18 29.242.2MPa35.95MPaRQD47.572 62.1220.1929.73GPa 25.32GPa0.2m 4 20.4032.43MPa25.96MPa 10.6821.08GPa15.81GPaRQD45.5652.1848.91 5 4 10.629.9MPa20.25MPa6.418.2KPa12.3MPa 0.620.65MPa0.64MPa0.1235.1115.53GPa 7.85GPa T8T12W3 200m 2.4 109410 20082008 125756 110 万方数据 19 3mm 5mm3mm 2.5 1 500m200m 2 万方数据 20 3 101103109111113 3.1 101103 105109111113106108110 1053.1 101103820860m116m 9m375101103150m 1131845m100m1111781m 90m1091758m100m3 7m80m90m90m 113111109 106116m 600m7m374.5 108 100m680m6m 600m185 110 160800m 6m600m264 3.2 3570 6 3.1101103 101A1A23101 Z1Z28 万方数据 21 101103 C CZ 109113 109113N M109111L 113 3.1 3.3 10110320063 20061020071120086 200972010620115 4510911320105 27201010201113 23 3.3.1 万方数据 22 3.2 Z 3.3 Z7 101101103 100mm 113111156mm109 109 1092109113 Z7101103Z790mm113 111101103 182mm109302mm 3.4 L 3.5 LL7 L111137mm109 333mm L7113111 108mm109 300mm 万方数据 23 500m 3.6 M 3.7 N 101103Z13 106mm0.8mm/m109111113 M3500mm073mm -0.8mm/m1.0mm/m 1.5mm/m 3.3.2 1101103 0.031091111130.1 2A 1/2 175mr0343m3.8 101 550mr295m1.93 62.6458.96[77] 万方数据 24 3.8 A 3.9 A 3.3.3 3.10113-111 28 3.10 3.3.4 101 万方数据 25 /150/360760mm 107/180/500600mm 204/180/630300mm101103 /116/520200mm 1/4 [51] 101103109113 1/51/4H 3.4 10.05 r295m1.93 62.64 2 3 4 1/51/4H 万方数据 26 4 4.1 4.1.1 20m 2.0mm/m 0.210-3/m3.0mm/m20m 12mm4mm 10mm 1.5mm/m2.0mm/m500m 1 0056.5 65.7 45 万方数据 27 0070 75 0055 63.95 0057 65.7 45 q tgctg ctghH q cos1 4-1 tgctg ctghH l cos1 4-2 hm Hm 4-3 4-4 2 10m 4.1 万方数据 28 4.1 4.1.2 64.4m262 404.56t860.29t 4.2 106108110 110 500m 62 万方数据 29 2.5m 500m 1/31/10H 101103109111113 2.5m 万方数据 30 4.3 1 404.56t 2 万方数据 31 5 [3] 5.1 500m [51] 5.1.1 1 万方数据 32 5 60 2 100-200m 1/3 5-1 WmaxqM 5-1 q Mm 5.1 5-2 tan Hq rqb 5-3 Lbm 万方数据 33 rm 5.1 5-3 5-3 tan1 b H k q 5-4 5-4 1 5-5 5-6 万方数据 34 b0.7r 0.94r 0.7r0.94r 5-7 5-8 5.1.2 1 107 16.620419.5230422.2101 17.334010816.852804 16.7918.2 18 30m30m 30m167200m18 9.311.1m101103107 5.110m 万方数据 35 5.1 m m 4 m m / m3/h 101 116 10.0 155-180 180 60/133 103 116 9.0 165-195 162 110/144 107 185 9.8 185-195 176.4 130/150 147-175 2 5.2400m 1/51/4 H 120m .. 50 k0.5200m k0.65 101103109113 0.1 1.5mm/m r2