导水裂隙带

通过与其它方法的对比，认为用微地震（MS）监测技术确定导水裂隙带高度是可靠的。

Based on comparison with other methods , it considers that it is reliable to determine the height of water flowing fractured zone by the MS monitor technology .

准确地提供采煤前后顶底板岩层冒落带高度、导水裂隙带高度及其形态变化等信息，是安全采煤可行性研究和设计的基础。

Therefore , it is foundation of coal mining and design to provide accurate information of caving zone and water flowing fractured zone before and after mining .

沿倾向模型的冒落带高度约20.2m，导水裂隙带高度约33.8m。

The height of the caving zone along the dip model is about 20.2m and the height of water-flowing fractured zone is about 33.8m .

3煤层全采后（4个分层）垮落带高度为10m左右，导水裂隙带的高度为21.5m，与理论计算和数值模拟结果基本一致；

The height of the watering fissures is 21.5m because the height of caving zone is about 10m after the mining of all the 3 seam ( 4 layers ), and the result basically accord to the result of theoretic calculating and numerical simulation ;

导水裂隙带高度预测途径探讨

On the Prediction Ways of the Height of Transmissive Fissure Zones

导水裂隙带高度研究方法概述

Summary of research methods on height of transmissive fracture belt

利用数值模拟方法确定导水裂隙带发育高度

Determining Height of Water - flowing Fractured Zone with Numerical Simulation Method

急倾斜煤层覆岩导水裂隙带高度研究

Study of Overburden Water Flowing Fractured Zone Height of Steep Seam Mining

反程序开采的导水裂隙带高度研究

Study on Height of Water Flowing Fractured Zone in Mining with Reverse Procedures

覆岩主关键层位置对导水裂隙带高度的影响

Effects of primary key stratum location on height of water flowing fracture zone

沙下大采高采煤导水裂隙带高度的确定&以鄂尔多斯煤田南部为例

The high determination of conductive fracture induced by high face mining under desert

覆岩导水裂隙带井下微地震监测研究

Research on Microseism Monitor in Height of Water Flowing Fractured Zone of Cover Rock

煤层采后覆岩中的导水裂隙带之上存在离层带。

There exits bed separation zone above water-conducting crack zone overburden after coal mining .

大距离声波穿透法确定导水裂隙带范围

Determination of range of the draw water fissure zone using the long distance sound transmission method

综放开采最大导水裂隙带高度的应力法预测

Prediction of maximum height of the fractured zone by stressing method for sub level caving mining

综放面覆岩导水裂隙带高度的确定

Determination of the Height of Water Flowing Fractured Zone in Overburden Strata Above Fully-Mechanized Top-Coal Caving Face

预计导水裂隙带的应力分析方法

Prediction of the height of water conducting fissured zone by analyzing the stress distribution in overlying strata

而增大重复开采厚度则导水裂隙带增高一般不明显。

Moreover , the height of water flowing fractured zone will increase little if several mining thickness is increased .

运用急倾斜煤层导水裂隙带高度经验公式以及现场观测数据与模拟结果进行对比，验证了数值模拟结果的正确性。

Using the water flowing fractured zone height empirical formula of steep seam and field observation data proved the correctness of the simulation results without pore pressure .

首先，从覆岩三带的形成出发，分析了导水裂隙带发育的影响因素、发育规律。

To begin with , influencing factors and distributing regularity of water flowing fracture zone are analysed in term of overlying rock formation in the three-tone area .

用经验公式对覆岩导水裂隙带高度进行了计算，采用简易水文观测法对覆岩导水裂隙带高度进行了测定。

And the height of water flowing fractured zone in overburden strata is calculated by the empirical formula and is measured with a simple hydrological observation method according to drilling on spot .

基于分支曲线方程，可求得煤层底板突水临界采动导水裂隙带深度h1l，当h1>h1l时，发生突水；

The critical depth of the mining water-conducting fissure zone , h 1l , for water inrush from coal floor can be derived from the bifurcation curve equation . When h 1 > h 1l , water inrush from coal floor can be caused .

覆岩运动为厚岩层，多阶段、慢发展，多岩层的同步垮落，导致离层空间大，容易沟通原生裂隙，形成超高导水裂隙带。

The features of overburden strata movement are thick strata , multi-stages , slow development , synchronously collapse of multi-rock , leading a big abscission layer space , which is easy to connect to pre-existing fracture , forming ultra-high guide water flowing fractured zone .