I'm trying to use the search query along with an array of arguments to narrow down search results, but I'm failing horribly. This is what I have so far.

 $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;                
       $s_array = array(
            'post_type' => blog,
            'caller_get_posts' => 1, 
            'paged' => $paged, 
                'meta_query' => array(
                    array(
                        'key' => 'votes_percent',
                        'value' => '50',
                        'compare' => '>',
                        'type' => 'numeric',
                    )));

        $s_query = http_build_query($s_array);

        $is_query = '&' . $s_query;

        $s_streaming = $query_string . $is_query;

    query_posts($s_streaming); 

When echoing out $s_streaming I get

s=test&category=wordpress&post_type=blog&caller_get_posts=1&paged=1&meta_query%5B0%5D%5Bkey%5D=votes_percent&meta_query%5B0%5D%5Bvalue%5D=50&meta_query%5B0%5D%5Bcompare%5D=%3E&meta_query%5B0%5D%5Btype%5D=numeric 

If I remove the meta_query keys it works, so I'm guessing that is where my problem resides.

It works fine like this

query_posts($s_array); //just using the array to filter

query_posts($query_string); //just using the search query

I'm trying to build the string to query, because this fails.

query_posts($query_string . $s_array); //using both

Can anyone point me in the right direction?