diff --git a/Forms/FrmPipelineModelDataBase.cs b/Forms/FrmPipelineModelDataBase.cs
index f265e7e..da21f8d 100644
--- a/Forms/FrmPipelineModelDataBase.cs
+++ b/Forms/FrmPipelineModelDataBase.cs
@@ -35,6 +35,7 @@
         /// <param name="e"></param>
         private void FrmPipelineModel_Load(object sender, EventArgs e)
         {
+            // 加载窗口
             buttonOpen.Visible = isSh;
             string pipelinetype = Utility.pipelinetype;
             string[] pipelinetypes = pipelinetype.Split(',');
@@ -103,6 +104,7 @@
 
         private void btnCreateModel_Click(object sender, EventArgs e) //建模
         {
+            // 点击确定
             if (!invalidate())
                 return;
             try
@@ -134,6 +136,11 @@
                 lineParam.startDepthFieldName = checkBoxDeep.Checked ? cmbFrom.Text : startH.Text;
                 lineParam.endDepthFieldName = checkBoxDeep.Checked ? cmbTo.Text : endH.Text;
                 lineParam.isRevert = chkDeep.Checked;
+                if(cmbRadius.Text.ToString() == "")
+                {
+                    MessageBox.Show("管径不能为空！", "提示");
+                    return;
+                }
                 lineParam.diameterFieldName = cmbRadius.Text;
                 lineParam.relativeMode = (cmbReference.Text == "管顶") ? 0 : 1;
                 lineParam.lineColor = btnPipelineColor.BackColor;
@@ -228,13 +235,21 @@
             cmbID.SelectedItem = "编号";
             cmbFrom.SelectedItem = "起始埋深";
             cmbTo.SelectedItem = "终止埋深";
-            cmbRadius.SelectedItem = "管径";
+            if (cmbRadius.Items.Contains("管径"))
+            {
+                cmbRadius.SelectedItem = "管径";
+            }
+            else if (cmbRadius.Items.Contains("沟道高"))
+            {
+                cmbRadius.SelectedItem = "沟道高";
+            }
             comboBoxExHeight.SelectedItem = "沟道高";
             comboBoxExWidth.SelectedItem = "沟道宽";
         }
 
         private void comboBoxExLayer_SelectedIndexChanged(object sender, EventArgs e)
         {
+            // shapefile图层下拉框发生变化时
             if (comboBoxExLayer.SelectedIndex == -1)
                 return;
 
@@ -253,12 +268,20 @@
                 GSOFieldDefn fielddef = features[0].GetFieldDefn(i);
                 addComboboxParam(fielddef.Name);
             }
+
+            //根据shapefile图层来确定管线图层类型
+            //当管线类型图层shapefile图层字符串  包含  管线类型图层的某一个item时 则赋值
             for (int i = 0; i < pipelineTypeCbo.Items.Count; i++)
             {
                 if (comboBoxExLayer.Text.Contains(pipelineTypeCbo.Items[i].ToString()))
                     pipelineTypeCbo.Text = pipelineTypeCbo.Items[i].ToString();
             }
 
+            //如果经过上面的循环，管线类型图层依然为空，且导入的涂层时电信、移动、联通、信号的一种时，管线类型图层 赋值 “通信”
+            if (pipelineTypeCbo.Text.ToString() == "" && comboBoxExLayer.Text.Contains("电信")|| comboBoxExLayer.Text.Contains("信号")|| comboBoxExLayer.Text.Contains("移动") || comboBoxExLayer.Text.Contains("联通")) {
+                pipelineTypeCbo.Text = "通信";
+            }
+
             initComboboxParam();
         }
 
@@ -371,6 +394,7 @@
 
         private void buttonOpen_Click(object sender, EventArgs e)
         {
+            // 打开文件
             OpenFileDialog dlg = new OpenFileDialog();
             dlg.Filter = "*.shp|*.shp";
             dlg.Multiselect = false;