<th id="5nh9l"></th><strike id="5nh9l"></strike><th id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"></th><strike id="5nh9l"></strike>
<progress id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"><noframes id="5nh9l">
<th id="5nh9l"></th> <strike id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"></span>
<progress id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"></span><strike id="5nh9l"><noframes id="5nh9l"><strike id="5nh9l"></strike>
<span id="5nh9l"><noframes id="5nh9l">
<span id="5nh9l"><noframes id="5nh9l">
<span id="5nh9l"></span><span id="5nh9l"><video id="5nh9l"></video></span>
<th id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"></th>
<progress id="5nh9l"><noframes id="5nh9l">

平煤十礦地應力測量及其應用

In situ stress measurement and its application in the lOth Mine of Pingdingshan Coal Group

  • 摘要: 平煤十礦采用三維套孔應力解除地應力測量技術和具有溫度補償功能的空心包體應變計,完成了礦區6個水平、11個測點的現場地應力實測,最大測點深度達到1123 m.這是我國煤礦首次采用應力解除法進行系統的礦區地應力測量并且測量深度超1100 m.通過測量獲得了礦區11個測點的三維地應力狀態,揭示了礦區地應力場的分布規律,建立了礦區地應力場模型.針對平煤十礦是我國典型的高瓦斯礦井、深部采礦存在引發煤(巖)爆和瓦斯爆炸的高危險性,本文提出:根據實測地應力數據,采用數值模擬技術,定量計算開挖擾動引起的開采煤層和圍巖中能量聚集狀況及其隨采礦過程的變化規律,借助地震學的知識,根據能量聚集狀態對未來開采可能引發煤(巖)爆的時間、地點和震級進行預測.

     

    Abstract: In situ stress measurements were carried out at 11 points of 6 levels in the 10th Mine owned by Pingdingshan Coal Group, using a three-dimensional (3D) overcoring stress measurement technique and hollow inclusion strain gages. The maximum measuring depth reaches 1123 m, and it is the first time to apply the overcoring technique to make systematical stress measurements with the measuring depth exceeding 1100 m at coal mines. 3D in-situ stress states at these 11 points were determined by the measurements. Based on measuring results, the regularities of in situ stress states in the mine were obtained and a mathematical model of regional stress field was also established. According to the high risk of coal (rock) bursts and gas explosion in deep mining of the coal mine, a method for predicting coal (rock) bursts was provided as follows. Based on numerical simulation and in situ measurement results, quantitative calculations are made of energy accumulation and its variation with mining process in the rock (coal) mass and surrounding rock, and then according to accumulated energy distribution, the seismology technology is used to predict the place, time and magnitude of coal (rock) bursting induced by future mining.

     

/

返回文章
返回
<th id="5nh9l"></th><strike id="5nh9l"></strike><th id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"></th><strike id="5nh9l"></strike>
<progress id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"><noframes id="5nh9l">
<th id="5nh9l"></th> <strike id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"></span>
<progress id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"></span><strike id="5nh9l"><noframes id="5nh9l"><strike id="5nh9l"></strike>
<span id="5nh9l"><noframes id="5nh9l">
<span id="5nh9l"><noframes id="5nh9l">
<span id="5nh9l"></span><span id="5nh9l"><video id="5nh9l"></video></span>
<th id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"></th>
<progress id="5nh9l"><noframes id="5nh9l">
259luxu-164