本文選題：邊坡穩(wěn)定性　切入點(diǎn)：結(jié)構(gòu)面攝影測量　出處：《煤炭科學(xué)技術(shù)》2017年12期 　論文類型：期刊論文

【摘要】：巖體力學(xué)強(qiáng)度參數(shù)是影響巖體質(zhì)量指標(biāo)的重要因素,而巖體質(zhì)量級別直接反映巖體穩(wěn)定性情況,為了研究西露天礦邊坡巖體自穩(wěn)能力,采用現(xiàn)場結(jié)構(gòu)面攝影測量技術(shù)獲取巖體結(jié)構(gòu)面參數(shù)信息,利用點(diǎn)荷載試驗和廣義Hoek-Brown強(qiáng)度準(zhǔn)則研究了邊坡巖石和巖體的力學(xué)強(qiáng)度參數(shù),并結(jié)合巖體質(zhì)量分級理論,研究了邊坡不同區(qū)域的巖體質(zhì)量級別。研究表明:西露天礦邊坡巖石抗壓強(qiáng)度為88.93~119.86 MPa,強(qiáng)度較高;巖體整體抗壓強(qiáng)度為2.874~3.710 MPa,黏聚力為0.788~0.894MPa,內(nèi)摩擦角為49.18°~51.01°,巖體質(zhì)量較好,屬于Ⅲ級巖體,基本穩(wěn)定;但局部3號測點(diǎn)區(qū)域巖體抗壓強(qiáng)度較低,僅有0.555 MPa,黏聚力0.438 MPa,內(nèi)摩擦角39.46°,屬于Ⅳ級巖體,巖體自穩(wěn)能力差。
[Abstract]:The mechanical strength parameter of rock mass is an important factor affecting the quality index of rock mass, and the quality level of rock mass directly reflects the stability of rock mass. In order to study the self-stability ability of rock mass in west opencast mine slope, The field structural plane photogrammetry was used to obtain the parameter information of rock mass structural plane. The mechanical strength parameters of slope rock and rock mass were studied by point load test and generalized Hoek-Brown strength criterion, and combined with the theory of rock mass quality classification. The quality grade of rock mass in different regions of the slope is studied. The results show that the compressive strength of the slope is 88.93X 119.86 MPa, the overall compressive strength of rock mass is 2.874 ~ 3.710 MPa, the cohesion is 0.7880.894MPa, the angle of internal friction is 49.18 擄51.01 擄, and the quality of rock mass is good. It belongs to grade 鈪，

本文編號：1622971