巖土的物理力學性質(zhì)參數(shù)

1、巖土的物理力學性質(zhì)指標巖土的物理力學性質(zhì)指標應根據(jù)工程地質(zhì)劃分的扇形區(qū)及各區(qū)的邊坡變形破壞特點，選取與之有關的試樣進行力學試驗，測定巖石及軟弱夾層物理力學性質(zhì)指標。巖石及軟弱夾層的物理性質(zhì)指標詳見表1至表7。表S抗剪斷）試驗成果表巖性試虛方法峰住屈服ffl殘余低出卬WMl'd）若甲，月中門MPa）（枚巖與大理抗剪斷抗剪0. 25|0. 650. 32 0. 46 0 230. 20巖互層單點抗剪0. 580. 120. 310. ()7抗剪斷0. 640. 33（）,4X n,口.科千枚巖抗剪(1. 460. 250. 270. 13單點抗啊0. 5f)0. IX0. 34里3巖也新理

2、力學性質(zhì)史內(nèi)忒覽成果花Mftflfll制性指尿力學用桿na收出率tsHi蜩開孔1*5點奉障奉Ah（則"4，kn工t，J小；THJE也相批軟他tHHlH嬋性捶浙松強度K駕電聚W也強理M>比M*dW.iI*llVtIVhTftW強匕2.12523*1,也的3L層中通火曲IE斗*-彩2.550MrtvrAJIVj甦鵬世3.M25.3l.»1.W.V97什工Hil0.2J<1,HO0.45II,熱MT122此第LIIO0.4bn.24玄兒步<il.30.73仙U.IK表1部分巖石的容重巖石名稱容重丫（g/cm3）巖石名稱容重丫（g/cm3）變化范圍平均值變化范圍平

3、均值花崗巖2.252.802.65泥質(zhì)砂巖一2.28響巖一一粘土質(zhì)砂巖一2.52正長巖2.503.002.79頁巖2.32.62.50流紋巖一一砂質(zhì)頁巖2.082.652.36流紋斑巖2.492.632.60粘土質(zhì)頁巖2.512.722.65閃長巖2.722.992.86泥質(zhì)頁巖一2.64黑云母花崗閃長巖一2.60煤質(zhì)頁巖一2.63輝長巖2.553.093.00粘土巖2.242.602.50橄欖巖一一砂質(zhì)粘土巖一2.56石英斑巖2.562.632.60泥灰?guī)r2.322.652.50斑巖2.602.892.67石灰?guī)r2.682.842.73粗面巖2.302.772.58貝殼灰?guī)r一一安山巖2.44

4、3.102.62硅質(zhì)灰?guī)r2.812.90一粉巖一一白云質(zhì)灰?guī)r一2.80蛇紋巖2.502.802.65泥質(zhì)灰?guī)r一2.30玄武巖2.603.212.90鹽巖2.282.412.60輝綠巖2.533.122.94白堊1.202.201.70硅長斑巖2.202.74一石膏一一安山凝灰集塊巖一2.62花崗片麻巖2.303.202.8凝灰角礫巖2.202.90一片麻巖2.593.002.78火山凝灰?guī)r1.601.951.80白云巖2.102.902.55凝灰?guī)r0.752.401.80板巖2.602.902.75凝灰質(zhì)熔巖一2.64大理巖2.692.872.78礫巖1.902.802.35云母片巖2.542

5、.972.73砂巖2.452.722.60綠泥石片巖2.772.782.77粗砂巖一2.57粘土質(zhì)片巖一一中砂巖一2.60角閃石片巖2.673.052.90細砂巖一2.65石英巖2.302.702.50粉砂巖一2.59千枚巖2.712.862.78石英砂巖2.612.702.65表2部分巖石的孔隙率與吸水率巖石名稱孔隙率n（為吸水率31(%變化范圍平均值花崗巖0.042.800.950.101.70流紋斑巖1.103.402.000.141.65閃長巖0.253.001.250.181.00正長巖一2.540.48安山巖0.291.130.70一玄武巖輝綠巖霏細巖凝灰?guī)r火山角礫巖安山凝灰集塊巖

6、礫巖砂巖砂巖（第三紀）砂巖（白堊紀）砂巖（侏羅紀）砂巖（三迭紀）砂巖新鮮的風化的石英砂巖石英砂巖新鮮的風化的頁巖砂質(zhì)頁巖泥質(zhì)頁巖煤質(zhì)頁巖泥灰?guī)r石灰石1.104.301.002.200.295.101.592.230.907.540.404.102.005.101.049.305.0020.002.2042.007.2037.704.2024.600.6027.70一一一一0.707.000.804.15一一1.0052.000.5327.002.301.702.201.803.202.103.205.0413.0015.3017.1013.2019.3021.112.261.714.91一一1

7、.351.0318.0012.000.201.000.300.800.201.000.180.350.342.120.144.000.401.000.144.101.009.00一一一一一一一一2.306.00一一一1.005.000.206.40石灰?guī)r（第三紀）一20.00一石灰?guī)r（中生代）1.2026.5011.65一石灰?guī)r（古生代）0.8027.0012.00一白堊5.0058.0026.40一石膏0.104.001.70一硬石膏0.636.261.65一片麻巖0.302.401.350.140.30大理巖0.106.001.00一白云巖0.3025.007.70一石英巖0.008.70

8、2.400.020.28石英片巖1.532.802.000.100.30角閃石片巖一2.960.11云母片巖一0.790.080.42綠泥石片巖一2.100.551.12千枚巖一3.600.543.31板巖0.293.761.300.70表3不同成因粘土的有關物理力學性質(zhì)指標（一）土類孔隙比e液性指數(shù)IL含水量W（%液限W（%塑性指數(shù)Ip下蜀系粘性土0.60.9<0.8152525401018一般粘性土0.551.00-1.015302545520新近沉積粘性土0.71.20.251.224363045648淤泥或游泥質(zhì)土沿海1.02.0>1.0367030651025內(nèi)陸山區(qū)云貴

9、紅粘土1.01.900.430505090>17表4不同成因粘土的有關物理力學性質(zhì)指標（二）土類容許承載力R（xl05Pa）壓縮模量E(xl05Pa)內(nèi)聚力C(x105Pa)內(nèi)摩擦角?。?）下蜀系粘性土30>80>1500.41.02230一般粘性土10>45401500.10.51522新近沉積粘性土8>1420750.10.2715淤泥或游泥質(zhì)土沿海4>1010500.050.15410內(nèi)陸5>112050山區(qū)3>81060云貴紅粘土10>32501600.30.8510表5幾種土的滲透系數(shù)表土類滲透系數(shù)K（以cm/s）土類滲透系數(shù)K（

10、以cm/s）粘土<1.2X10-6細砂1.2X10-3-6.0X10-3亞粘土1.2X10-6-6.0X10-5中砂6.0X10-3-2.4X10-2輕亞粘土6.0X10-5-6.0X10-4粗砂2.4X10-26.0X10-2黃土3.0X10-46.0X10-4礫砂6.0X1021.8X10-1粉砂6.0X10-41.2X10-3表6土的平均物理、力學性質(zhì)指標（一）土類孔隙比e天然含水量塑BMw容重T（X內(nèi)聚力C(x105Pa)內(nèi)摩擦角小變形模量EoW(%(%)104N/m3)標準的計算的(0)(x105Pa)粗砂0.40.515182.050.020424600.50.619221.

11、950.010404000.60.723251.900038330中砂0.40.515182.050.03040460砂0.50.619221.950.020384000.60.723251.900.01035330土細砂0.40.515182.050.060383700.50.619221.950.040362800.60.723251.900.02032240粉0.50.615182.050.080.0536140砂0.60.719221.950.060.03341200.70.823251.900.040.0228100表7土的平均物理、力學性質(zhì)指標（二）土類孔隙比e天然含水量W（為塑限

12、W（為容重T(X104N/m3)內(nèi)聚力C(x105Pa)內(nèi)摩擦角6（°）變形模量Eo(X105Pa)標準的計算的0.40.51.5182.100.100.0630180輕0.50.61.922<9.42.000.070.0528140亞0.60.72.3251.950.050.0227110粘0.40.51.5182.100.120.0725230土0.50.61.9229.512.42.000.080.05241600.60.72.3251.950.060.0323130亞0.40.51.5182.100.420.25244500.50.61.92212.515.42.000

13、.210.1523210粘0.60.72.3251.950.140.1022150粘0.70.82.6291.900.070.0521120土0.50.61.9222.000.500.3522390性0.60.72.3251.950.250.1521180粘0.70.82.62015.518.41.900.100.1020150土0.80.93.0341.850.110.0319130土0.91.03.5401.800.080.0518800.60.72.3251.950.680.40203300.70.82.62918.522.41.900.340.25191900.80.93.0341.8

14、50.280.20181300.91.03.5401.800.190.101790粘0.70.82.6291.900.820.60182800.80.93.03422.526.41.850.410.3017160土0.91.13.5401.750.360.25161100.80.93.03426.530.41.850.940.65162400.91.13.5401.750.470.3515140注：1.平均比重?。荷盀?.65;輕亞粘土為2.70;亞粘土為2.71;粘土2.74。2.粗砂與中砂的Eo值適用于不均系數(shù)Cu=3時，當Cu>5時應按表中所列值減少2/3。Cu為中間值時，Eo值按

15、內(nèi)插法確定。3.對于地基穩(wěn)定計算，采用內(nèi)摩擦角。的計算值低于標準值巖石及軟弱夾層的力學性質(zhì)指標見表8至表25。表8巖石力學性質(zhì)指標的經(jīng)驗數(shù)據(jù)（一）容重抗壓強度抗拉強度靜彈性模量動彈性模量巖類巖石名稱T(g/cm3)R(x105Pa)Rt(x105Pa)E(x105Pa)(x105Pa)2.632.73750110021331.45.65.07.0花崗巖2.803.101200180034515.436.97.19.13.103.301800200051579.19.42.5800100023285.47.0正長巖2.72.81200180034511.511.47.19.12.83.31800

16、250051579.411.4漿2.52.91200200034577.19.4閃長巖2.211.42.93.320002500057719.411.4斑巖2.81600546.67.03.6安山巖2.52.71200160034157.18.64.310.6玄武巖2.73.31600250045718.611.42.71600180045518.69.1輝綠巖6.97.92.92000250057719.411.4流紋巖2.53.31200250034712.211.47.111.4花崗片麻巖2.72.91800200051577.39.49.19.42.5800100022285.07.0

17、片麻巖1.57.02.62.81400180040517.89.1變2.61870255.6石英巖4.514.22.83.020003600571029.414.2質(zhì)大理巖2.53.3700140020401.03.45.08.2千枚巖巖2.53.31200140034402.203.47.17.8板巖凝灰?guī)r2.53.31200250034712.211.47.111.4火山角礫巖2.53.31200250034711.011.47.111.4火山集塊巖2.22.5400100011283.37.0礫巖2.82.91200160034451.011.47.18.62.93.3160025004

18、5718.611.4石英砂巖2.62.71680102519300.301.255.06.41.21.545100230.00050.00230.51.0砂巖2.23.0470180014522.785.43.79.1片狀砂巖2.76800130022386.158碳質(zhì)砂巖2.23.0500140015410.62.247.8碳質(zhì)頁巖2.02.625080018562.65.52.85.4黑頁巖2.71660130047912.65.55.07.5帶狀頁巖1.551.656080460.00050.00250.70.9砂質(zhì)頁巖2.32.6600120043862.03.64.47.1云母頁巖軟頁巖1.8