| 水力压裂切顶卸压技术在干河煤矿的应用 |
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| 引用本文： | 郭振波. 水力压裂切顶卸压技术在干河煤矿的应用[J]. 江西煤炭科技, 2021, 0(1): 66-69,73. DOI: 10.3969/j.issn.1006-2572.2021.01.021 |
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| 作者姓名： | 郭振波 |
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| 作者单位： | 山西霍宝干河煤矿有限公司,山西 临汾 041602 |
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| 摘 要： | 为解决干河煤矿σHvh型构造应力场下2-2092巷在回采过程中超前影响段变形严重的问题,通过理论分析确定了水力压裂钻孔的最优布置参数为倾角50°、方位角90°、孔深40.5 m、孔距800 mm.在2-2092巷道内应用该钻孔布置参数进行水力压裂切顶卸压试验研究后发现:水力压裂段较非压裂段的底鼓量、顶板下沉量、两帮移近...
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| 关 键 词： | σHvh型构造应力场 水力压裂 切顶卸压 围岩变形量 |
Application of Hydraulic Fracturing Roof-cutting-and-Pressure-Relief Technology in Ganhe Colliery |
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| Guo Zhenbo. Application of Hydraulic Fracturing Roof-cutting-and-Pressure-Relief Technology in Ganhe Colliery[J]. Jiangxi Coal Science & Technology, 2021, 0(1): 66-69,73. DOI: 10.3969/j.issn.1006-2572.2021.01.021 |
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| Authors: | Guo Zhenbo |
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| Affiliation: | (Huobao Ganhe Mine Co.,Ltd.,Linfen,Shangxi 041600) |
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| Abstract: | To solve the severe deformation of the leading influence section at 2-2092 lane under theσHvh tectonic stress field in Ganhe Collier,the author determines the optimal arrangement parameters of the hydraulic fracturing borehole with 50°inclination angle and 90°azimuth angle,40.5 m hole depth,800mm hole distance by theoretical analysis,whose experimental practice shows the floor heave,the roof sinking,and the convergence of two sides in hydraulic fracturing section is lower than the non-fracturing section by 59.4%,51.2%and 38.9%respectively;and the deformation of surrounding rock in the affected section of the roadway is controlled within the allowable range with significant pressure relief effect. |
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| Keywords: | σHvh type tectonic stress field hydraulic fracturing roof cutting and pressure relief surrounding rock deformation |
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