The utility model discloses a gas bag advance detection device in a gas outburst driving working face. The geophone and block of the detection unit are located in the protection cylinder and arranged in sequence along the axis direction of the protection cylinder, the protection cylinders of the multiple detection units are arranged in parallel and spaced in sequence, the multiple geophones are located on the same side of the multiple block, and the mining communication cable includes the seismic mining The main line connected with the collector and several branch lines connected with the geophone respectively. Through the above optimized design of the advance detection device for the gas bag in the driving face with gas outburst, a plurality of detection units are arranged in turn on the side of the coal seam roadway to be tested along the direction away from the mining face, and the detection data of the three-axis geophone are collected by the seismic acquisition instrument. The vibration produced by the cutting coal body of the comprehensive excavation machine in the driving face is used as the detection focus, which can work with the driving The coexistence of face driving construction speeds up the progress of driving and reduces the time and workload of other detection methods.
【技术实现步骤摘要】
一种瓦斯突出掘进工作面瓦斯包随掘超前探测装置
本技术涉及瓦斯探测
,尤其涉及一种瓦斯突出掘进工作面瓦斯包随掘超前探测装置。
技术介绍
矿井瓦斯突出掘进工作面迎头前方瓦斯包超前探测是一项技术复杂、受现场环境干扰较大的一种地球物理探测工作。目前,矿井瓦斯包探测主要有电磁波和传统地震法。吕绍林、何继善等采用无线电波透视法和槽波地震法的区域性瓦斯突出预测及地质雷达法和层内电测深法的局部性瓦斯突出预测,文光才、赵旭生等利用电磁波透视法结合瓦斯地质统计法预测突出危险区域,张许良、彭苏萍等利用三维地震勘探法预测瓦斯突出危险带,彭苏萍、高云峰等应用AVO技术检测煤层割理裂隙、预测煤层瓦斯包分布。现有技术中通常使用下列方法:1、矿井电磁波法在进行掘进工作面瓦斯包超前探测时,由于受到掘进工作面电气设备干扰,会造成较多的瓦斯包异常探测虚报,探测精度差且超前探测距离有限。2、矿井传统地震法中的三维地震法(包括AVO技术)及井下槽波地震法,均为区域性瓦斯突出预测,且当瓦斯突出的煤层埋深大时,地下构造、岩性变化会影 ...
【技术保护点】
1.一种瓦斯突出掘进工作面瓦斯包随掘超前探测装置,其特征在于,包括:多个检波单元(1)、矿用通信电缆(2)、地震采集仪(3);/n检波单元(1)包括保护筒、地震检波器(12)、封堵块(13),地震检波器(12)和封堵块(13)位于保护筒内且沿保护筒的轴线方向依次布置,封堵块(13)内设有沿所述轴线延伸的导线孔;/n多个检波单元(1)的保护筒依次平行间隔布置,多个地震检波器(12)位于多个封堵块(13)的同一侧,矿用通信电缆(2)包括主线和分别与主线电连接的多根支线,地震采集仪(3)与主线连接,每根支线远离主线一端穿过封堵块(13)的导线孔与地震检波器(12)连接。/n
【技术特征摘要】
1.一种瓦斯突出掘进工作面瓦斯包随掘超前探测装置,其特征在于,包括:多个检波单元(1)、矿用通信电缆(2)、地震采集仪(3);
检波单元(1)包括保护筒、地震检波器(12)、封堵块(13),地震检波器(12)和封堵块(13)位于保护筒内且沿保护筒的轴线方向依次布置,封堵块(13)内设有沿所述轴线延伸的导线孔;
多个检波单元(1)的保护筒依次平行间隔布置,多个地震检波器(12)位于多个封堵块(13)的同一侧,矿用通信电缆(2)包括主线和分别与主线电连接的多根支线,地震采集仪(3)与主线连接,每根支线远离主线一端穿过封堵块(13)的导线孔与地震检波器(12)连接。
2.根据权利要求1所述的瓦斯突出掘进工作面瓦斯包随掘超前探测装置,其特征在于,保护筒包括筒体(11)和钻头(14),钻头(14)位于地震检波器(12)远离封堵块(13)一侧,钻头(14)上设有平行于筒体(11)轴向的延伸的导向杆(15),筒体(11)侧壁设有从靠近钻头(14)一端向中...
【专利技术属性】
技术研发人员:周建斌,
申请(专利权)人:安徽万泰地球物理技术有限公司,阳泉煤业集团股份有限公司,
类型:新型
国别省市:安徽;34
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