岩石力学参数

1、 水 泥 密度 g/cm3 3.10 普通混凝土 密度 g/cm3 2.60 轻骨料混凝土 密度 g/cm3 2.60 石灰岩 容重 kg/m3 10002600 花岗岩 容重 kg/m3 25002700 （石灰岩）碎石 容重 kg/m3 14001700 砂 容重 kg/m3 14501650 粘土

2、60;容重 kg/m3 16001800 普通粘土砖 容重 kg/m3 16001800 粘土空心砖 容重 kg/m3 10001400 水泥 容重 kg/m3 12001300 普通混凝土 容重 kg/m3 21002600 轻骨料混凝土 容重 kg/m3 8001900岩石名称容重d/ (kg。m-3)弹性模量/MPa泊松比内聚力/MPa摩擦角/°抗拉强度/MPa

3、顶板粉砂岩24601.95e40.22.75381.84泥岩24610.875e40.261.2300.605砂质泥岩25100.5425e40.1472.16360.75细砂岩28733.34e40.2353.2421.29砂岩24871.35e40.1232.06401.13煤13煤13800.53e40.321.25320.15底板泥岩24831.77e40.2041.2320.58粉砂岩24601.95e40.23.75381.84砂岩25802.5e40.1592.5423.6砂质泥岩25301.085e40.1472.45402.01上层为填筑中细砂土，基层为中硬粘土主要为砂质泥岩

4、，无其他岩土层，岩体基本质量等级。粘聚力c=730kPa，内摩擦角=31°，弹性模量E=2661Mpa，泊松比=0.3，密度=2559kg/m3。对于土、岩石和混凝土一类材料，剪胀角通常明显小于材料的内摩擦角表4-5 常见岩石力学性质的经验数据岩类岩石名称抗压强度抗拉强度 弹性模量 泊松比岩浆岩花岗岩751101201801802002.13.33.45.15.15.71.45.65.436.90.360.160.160.100.100.02正长岩801001201801802502.32.83.45.15.15.71.511.40.360.160.160.100

5、.100.02闪长岩1202002002503.45.75.77.12.211.40.250.100.100.02斑岩1605.46.67.00.16安山岩玄武岩1201601602503.44.54.57.14.310.60.20.160.160.02辉绿岩1601802002504.55.15.77.16.97.90.160.100.100.02流纹岩1202503.47.12.211.40.160.02变质岩花岗片麻岩1802005.15.77.39.40.200.05片麻岩801001401802.22.84.05.10.300.200.200.05石英岩872003602.55.71

6、0.24.514.20.200.160.150.10大理岩701402.04.01.03.40.360.16千枚岩板岩1201403.44.02.23.40.16沉积岩凝灰岩1202503.47.12.211.40.160.02火山角砾岩火山集块岩1202501.011.40.160.0580°-87°砾岩401001201601601501.12.83.44.54.57.11.011.40.360.200.200.160.160.05石英砂岩68102.51.93.00.391.250.250.05砂岩4.510471800.20.31.45.22.785.40.30.2

7、50.20.05片状砂岩碳质砂岩碳质页岩黑页岩带状页岩8013050140258066130682.33.81.54.11.85.64.79.10.40.66.10.62.22.65.52.65.50.250.050.250.080.200.160.200.160.300.25砂质页岩云页岩601804.38.62.03.60.300.16软页岩201.41.32.10.300.25页岩20401.42.81.32.10.250.15泥灰岩3.52040600.31.42.84.20.382.10.400.300.300.20黑泥灰岩2.5301.82.11.32.10.30.25石灰岩10172555701281802000.61.01.53.34.37.610.711.82.18.40.500.310.310.250.250.160.160.04白云岩401201201401.13.43.44.01.33.40.360.160.16 表4-6 常见岩石的各种强度对比岩石名称